DOCSLIB.ORG

September 2016

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
September 2016 THE OFFICIAL PUBLICATION OF UCA OF SME WWW.TUCMAGAZINE.COM VOLUME 10 NO 3 SEPTEMBER 2016 Ground freezing TARP McCook Tunnel Tunnel demand forecast Special Editorial Supplement from the publisher of Mining Engineering SAVE the DATE June 4-7, 2017 Topics to Be Covered RETC2017 Contracting Practices and Cost Manchester Grand Hyatt California Projects 1 MARKET PLACE, SAN DIEGO, CA Design and Planning Design/Build Projects Difficult Ground Drill and Blast Environment, Health and Safety The Rapid Excavation and Tunneling Conference (RETC) Future Projects is the premier international forum for the exchange and Geotechnical Considerations dissemination of developments and advances in under- Ground Support and Final Lining ground construction. RETC provides innovative solutions Grouting and Ground Modification to the unique challenges associated with the tunneling Hard Rock TBMs industry. Large Span Tunnels and Caverns Microtunneling and Trenchless Tunneling Conference attendance exceeds 1,400 professionals from more than New and Innovative Technologies 30 countries. Industry sectors include: construction, mining, geotechnical Pressure Face TBM Case Histories engineering, exploration, environmental, economics, manufacturing, govern- ment, land, water/wastewater and transportation. The conference includes a Pressure Face TBM Technology comprehensive exhibit, short courses and field trips. Risk Management SEM/NATM Beautiful San Diego Shafts and Mining San Diego, California’s second largest city, where blue skies keep watch Tunnel Rehabilitation over 70 miles of majestic coastline and a gentle Mediterranean climate and Water and Gas Control friendly locals create a welcoming vibe all its own. International Projects Tunneling for Sustainability Bordered by the Pacific Ocean to the west, the Anza-Borrego Desert and the Laguna Mountains to the east, and Mexico to the south, the diverse neighbor- hoods of San Diego are spread out over 4,200 square miles, offering endless For more information, contact: opportunities for exploration and activities. Spend a day relaxing in one of the many beach communities, then hiking in the east San Diego County mountains the next. Explore the urban neighborhoods of San Diego’s downtown, from the iconic Gaslamp Quarter to the eclectic community of Hillcrest. Visit the quaint and charming island town of Coronado or the picturesque village Society for Mining, Metallurgy & Exploration of La Jolla. San Diego’s regions are so unique and diverse; there are plenty 12999 E. Adam Aircraft Cir. of options to discover something new each time you visit. Englewood, CO USA 80112 800.763.3132 | 303.948.4200, www.retc.org www.smenet.org, [email protected] SME3731 RETC STD Ad-TUC.indd 1 5/9/16 4:00 PM AN OFFICIAL PUBLICATION OF UCA OF SME WWW.SMENET.ORG VOLUME 10 NO 3 SEPTEMBER 2016 COVER STORY DEPARTMENTS 2 CONTENTS Chairman’s column 3 Underground FEATURE ARTICLES construction news 24 42 Ground freezing to repair leaks Tunnel demand In this issue — in slurry wall shaft forecast Poor ground con- ditions around Shawn P. Coughlin, Juan Leonardo the shafts at the 44 del Pino and Michael Schimmenti UCA of SME news Northern Area Purification Sys- tem was halting a 47 Classifieds/ Index of major expansion advertisers of the potable wa- ter system in Ar- gentina and forced contractors to shift to ground freez- 34 ing, page 24. The World’s largest live tunnel tunnel connection connection at TARP McCook at the TARP Mc- Tunnel Cook Tunnel is discussed on page 34. Cover photo Faruk Oksuz, Miguel Sanchez, Mike is of the purifica- Padilla, Dave Schiemann, Carmen tion system. Scalise and Matt Trotter Copyright 2015 by the Society for Mining, Met- allurgy and Exploration, Inc. All rights reserved. TUNNELING & UNDER- GROUND CONSTRUC- TION (ISSN 0026–5187) is published quarterly by the Society for Min- ing, Metallurgy, and Ex- ploration, Inc., at 12999 E. Adam Aircraft Circle, Englewood, CO 80112- Reproduction: More 4167. Phone 1–800–763– than one photocopy of 3132 or 303–973–9550. an item from SME may be Fax: 303–973 –3845 or e- made for internal use, pro- mail: [email protected]. vided fees are paid directly Website: www.smenet. to the Copyright Clearance org. POSTMASTER: Center, 27 Congress St., Send changes of ad- Salem, MA 01970, USA. dress to TUNNELING & Phone 978–750–8400, UNDERGROUND CON- fax 978–750-4470. Any STRUCTION, 12999 E. other form of reproduction Adam Aircraft Circle, requires special permission Englewood, CO 80112- from, and may be subject 4167. Article copies and to fees by SME. SME is back issues available on not responsible for any microfilm or microfiche statements made or from Linda Hall Library opinions expressed in in Kansas City, Mo. its publications. Mem- Printed by Cummings ber subscription rate Printing Co. Special editorial section from the publisher of Mining Engineering included in dues. EDITORIAL STAFF Editor CHAIRMAN’S COLUMN Steve Kral [email protected] Planning continues for another Senior Editor successful year for UCA of SME William M. Gleason [email protected] n the June 2016 Chairman’s All three events should be very Column of T&UC I wrote about educational and rewarding. I am our very successful World Tunnel looking forward to seeing as many of Senior Editor I Georgene Renner Congress (WTC) 2016. Since then, I you as possible. [email protected] have continued to hear from member The Executive Committee countries about how well the event continues with its strong support Production Graphic Artist was received. My thanks again to the of the Young Members and the Ted Robertson entire WTC 2016 team. Women Tunnelers groups. The [email protected] The Executive Committee of the committee urges more of the UCA UCA has elected four new members members to join these groups as they to the committee to replace four move forward with their agendas BUSINESS STAFF members whose terms have expired. and friendships, while we all work Media Manager The new members of the committee together to integrate those members Advertising are Michael Smithson, Jack into an overall stronger UCA Ken Goering Brockway, Richard Redmond and organization. [email protected] Erika Moonin. My congratulations In my last column (June, pp. 2), to them, and also my thanks to the I also mentioned our three strategic Phone +1-800-763-3132 or +1-303-973-4200 the retiring executive committee goals. Now that the summer is Fax +1-303-973-3845 members, Greg Hausen, Heather nearing its end, and many of us are Internet www.smenet.org Ivory, Rick Lovat and Kris Murthy, returning from vacation or other time who worked very hard to better our off to enjoy the sun, let’s get back SOCIETY FOR MINING, organization. We all appreciate the to the required work ahead of us to METALLURGY, AND EXPLORATION, work they did and their commitment. attain those goals sooner rather than INC. OFFICERS Planning for the Cutting Edge later. Conference to be held in Los Lastly, I want to advise that work President Angeles, CA on Nov. 6-9 is continuing on the History of Tunneling book is Timothy D. Arnold and that committee is working very nearing completion, and the editors hard to make it a success. will be sending it for publishing soon. President-Elect The George A. Fox Conference All WTC 2016 attendees will be sent John Mansanti planning is also ongoing and will be a free copy when the publishing is held, as usual, at the Graduate Center completed. Past President of the City Univeristy of New York, Enjoy the remainder of the J. Steven Gardner in New York City, on Jan. 24, 2017. summer, be safe and begin your Let’s hope for good weather. preprations and planning for the Executive Director Lastly on the conference front upcomimg conferences. ■ David L. Kanagy is the RETC event, to be held in Artie Silber, San Diego, CA on June 4-7, 2017. UCA of SME Chairman Underground Construction Association of SME Executive Committee Arthur D. Silber (Chair), Michael F. Roach (Vice Chair), William W. Edgerton (Past Chair), Lester M. Bradshaw, Judy Cochran, Robert Goodfellow, Gregory M. Hauser, Heather Ivory, Leon “Lonnie” Jacobs, Colin A. Lawrence, Rick Lovat, Mike A. Mooney, Pamela S. Moran, Nasri A. Munfah, Krishniah N. Murthy, Michael Rispin, Kellie C. Rotunno and Leonard A. Worden 2 SEPTEMBER 2016 T&UC® Demanding Conditions Demand JENNMAR. We’ve been an innovative leader in ground plates and resins are backed by experienced control for the mining industy for more than engineers and technicians who are with you forty years. Over the past decade, our every step of the way, from initial consultation growth has led us to make key acquisitions to qualified instruction and on-going technical of resources to further enhance our deep support. And, of course, our customer service commitment to serve the tunneling industry as is second-to-none. That’s something we’ve well. Our rock bolts, anchoring systems, liner always demanded of ourselves. Pittsburgh, PA USA • 412-963-9071 • www.jmcivil.com TUC_FullPg_JMCivil_Demands_3-2016.indd 1 3/8/2016 3:12:44 PM underground CONSTRUCTION NEWSNEWSNEWSNEWSNEWS Funding plans could put Gateway Project back on track mtrak’s Gateway plan in the United States. It is the latest step officials have got a boost in July when “This is a huge deal, and it reflects taken in order to show continued Athe U.S. Department of the regional cooperation that’s progress in a project they argue is Transportation announced that it has necessary to move forward,” U.S. critical to avoid crippling passenger- taken steps to unlock up to $4 billion Transportation Secretary Anthony railroad traffic in the Northeast U.S. to help pay for two new Hudson Foxx told The Wall Street Journal. Amtrak’s current pair of aging River rail tunnels and a railroad “Even a year ago, when I said that tunnels between Manhattan and bridge in New Jersey.
Load more

Recommended publications
  • Zaalteksten En.Indd
    ground in the city Under g aller EnPlease drop me in the box as you leave y texts Down the rabbit hole 1 We experience what is happening above ground on a daily basis, but what lies underneath the earth’s surface is usually hidden from view. And because that world is largely terra incognita for us, what happens there is shrouded in mystery. Stories about tunnels used to access and rob banks or as secret escape routes capture our imagination. By their very nature, illegal resistance movements operate ‘underground’, shunning the spotlight. The underground scene of artistic subcultures also prefers to avoid the glare of public attention. Besides arousing our curiosity, the unknown frightens us. The devil and other monstrous creatures are said to be lurking deep under the ground. Sewage workers would be well advised to offer up a quick prayer before removing a manhole cover. On the other hand, it is to the earth that we entrust our most cherished treasures. Venture down below and a wondrous world will open up to you! 1.1 Hepworth Manufacturing Company, The deep and Alice in Wonderland, 1903 mysterious underground It is very difficult to fathom what 1.2 Walt Disney Productions, is actually happening inside the earth Alice in Wonderland, 1951 and for a long time this was a matter of guesswork. Even now the deepest 1.3 In 1877 Thomas Wallace Knox, an Ameri- drilling operations into the earth’s can journalist and author of adventure crust are mere pinpricks. stories, wrote a weighty tome entitled The German priest and scholar Athana- The Underground World: a mirror of life sius Kircher tried to explain a number below the surface, with vivid descrip- of phenomena in the influential book tions of the hidden works of nature and he wrote in 1664: Mundus subterraneus, art, comprising incidents and adven- quo universae denique naturae tures beyond the light of day… divitiae.
    [Show full text]
  • Geomorphology of Thermo-Erosion Gullies – Case Study from Bylot Island, Nunavut, Canada
    Geomorphology of thermo-erosion gullies – case study from Bylot Island, Nunavut, Canada Godin Etienne & Fortier Daniel Département de Géographie – Université de Montréal, Montréal, Québec, Canada Center for Northern Studies, (CEN) – Laval University, Quebec, Quebec, Canada ABSTRACT In the valley of glacier C-79 on Bylot Island, snowmelt water runoff is creating thermo-erosion of permafrost wetlands. This process contributes to the rapid formation of gullies in ice-wedge polygons. One gully had been observed since 1999 and had a growth of 748 m since then. The geomorphology of this gully is characterized by an active thermo- erosion zone near the gully head, a poorly-active zone near the outlet and a moderately active zone in-between. Feedback mechanisms contribute to the erosion processes governing the development of the gully, accelerating erosion at its head and stabilizing it at its outlet. Erosion features such as sinkholes, collapses and baydjarakhs were consequently observed in the gully. Thermo-erosion processes have remained active and have had an impact on the ecosystem for more than a decade. RÉSUMÉ La thermo-érosion induite par la fonte du couvert nival cause la dégradation du pergélisol dans la vallée glaciaire C-79 sur l’Ile Bylot. Ce processus contribue à la formation rapide de réseaux de ravinement dans les polygones à coin de glace. L'observation d'un ravin depuis sa formation en 1999 et de son évolution jusqu’à 748 m en 2009, révèle trois types de zones d’érosion caractérisant sa géomorphologie : une zone de thermo-érosion très active en amont, une zone intermédiaire, et une zone faiblement active à proximité de l’exutoire.
    [Show full text]
  • Egypt and Israel: Tunnel Neutralization Efforts in Gaza
    WL KNO EDGE NCE ISM SA ER IS E A TE N K N O K C E N N T N I S E S J E N A 3 V H A A N H Z И O E P W O I T E D N E Z I A M I C O N O C C I O T N S H O E L C A I N M Z E N O T Egypt and Israel: Tunnel Neutralization Efforts in Gaza LUCAS WINTER Open Source, Foreign Perspective, Underconsidered/Understudied Topics The Foreign Military Studies Office (FMSO) at Fort Leavenworth, Kansas, is an open source research organization of the U.S. Army. It was founded in 1986 as an innovative program that brought together military specialists and civilian academics to focus on military and security topics derived from unclassified, foreign media. Today FMSO maintains this research tradition of special insight and highly collaborative work by conducting unclassified research on foreign perspectives of defense and security issues that are understudied or unconsidered. Author Background Mr. Winter is a Middle East analyst for the Foreign Military Studies Office. He holds a master’s degree in international relations from Johns Hopkins School of Advanced International Studies and was an Arabic Language Flagship Fellow in Damascus, Syria, in 2006–2007. Previous Publication This paper was originally published in the September-December 2017 issue of Engineer: the Professional Bulletin for Army Engineers. It is being posted on the Foreign Military Studies Office website with permission from the publisher. FMSO has provided some editing, format, and graphics to this paper to conform to organizational standards.
    [Show full text]
  • Congestion Relief Toll Tunnels
    Policy Study No. 164 July 1993 CONGESTION RELIEF TOLL TUNNELS by Robert W. Poole, Jr. and Yuzo Sugimoto EXECUTIVE SUMMARY Changing urban land-use patterns have reduced the importance of traditional downtowns as the origin and destination of numerous vehicular trips. Much traffic on downtown-area freeways seeks merely to get past downtown, thereby worsening the level of congestion for those seeking access to downtown. A number of European cities have begun to develop a new type of transportation facility: congestion-relief toll tunnels in downtown areas. These projects appear to be economically feasible largely or entirely from premium-price tolls paid by users. Hence, they are being developed by private consortia, operating under long-term franchises from government. Other keys to the feasibility of such projects are peak/off-peak pricing structures (congestion pricing), nonstop electronic toll collection, and restriction of use to auto-size vehicles only (to reduce tunnel dimensions and therefore capital investment). Preliminary analysis indicates that congestion-relief bypass tunnels for downtown Los Angeles and San Francisco would be economically feasible as private business ventures, if developed along European lines. Similar approaches might be applied to other controversial freeway projects in both cities, and to restructuring Boston's huge and controversial Central Artery/Tunnel project. Congress has already authorized public-private partnerships of this type, permitting private capital and private owner/operation to be used, both for new projects and to rebuild existing highway, bridge, and tunnel facilities. Six states and Puerto Rico have enacted private-tollway legislation under which such projects could be developed and operated.
    [Show full text]
  • The Influence of Geology on Battlefield Terrain and It's Affects on Military Operations in Mountains and Karst Regions: Examp
    Rudarsko-geološko-naftni zbornik Vol. 19 str. 57 - 66 Zagreb, 2007. UDC 341.31:550.9 Original scientific paper UDK 341.31:550.9 Originalni znanstveni rad Language/Jezik:English/Engleski THE INFLUENCE OF GEOLOGY ON BATTLEFIELD TERRAIN AND IT’S AFFECTS ON MILITARY OPERATIONS IN MOUNTAINS AND KARST REGIONS: EXAMPLES FROM WW1 AND AFGHANISTAN UTJECAJ GEOLOGIJE BOJNOG POLJA NA VOJNE OPERACIJE U PLANINSKOM I KRŠKOM PODRUČJU: PRIMJERI IZ PRVOG SVJETSKOG RATA I IZ AFGANISTANA MARKO ZEČEVIĆ1, ENIO JUNGWIRTH2 1 Ministry of Defence, Material Resources Directorate, Bauerova 31, 10000 Zagreb, Croatia e-mail:[email protected] 2 Ministry of Defence, Institute for Researches and Development of Defense Systems, Ilica 256 b, 10000 Zagreb, Croatia e-mail:[email protected] Key words: Military geology, “geological intelligence”, mountain Ključne riječi: Vojna geologija, “geološko izvješćivanje”, ratovanje u warfare, karst regions, terrain analysis planinama, krška područja, analiza terena Abstract Sažetak During the World War I conflict between the Austrian and Italian Tijekom 1. svjetskog rata u sukobu između talijanske i austro-ugar- army, Austrian engineer units constructed hallways in the karst region of ske vojske na rijeci Soči, austrijske su inženjerijske postrojbe izgradile Soča river. Those hallways, karst phenomena (caverns, caves) and other tunele u kršu. Takvi umjetni objekti (tuneli) i prirodni krški fenomeni fortifications, gave the Austrian army a tactical advantage. The construc- (kaverne, prirodne spilje), kao i druge fortifikacije omogućile su austro- tion principle of caverns is the consequence of the geological structure ugarskoj vojsci prednost u taktičkom smislu. Princip izgradnje tunela of the terrain. We are watching another military conflict in Afghanistan.
    [Show full text]
  • Exploring the War Underground Aims
    World War One Centenary : Continuations and Beginnings (University of Oxford / JISC) Exploring the War Underground by Chris Stephens 2012-10-29 15:44:57 Life on the Western Front front was lived underground, either in trenches or dugouts, or even deeper beneath the surface in caves, souterraines ' medieval underground quarries - or complex tunnel systems, designed to defend the frontlines from subterranean attack and then take the fight to the enemy in a deadly, troglodyte game of cat and mouse. The battlefields of Europe and beyond were underpinned by this subterranean world, for it was an essential part of the bloody business of trench warfare and the attritional nature of a conflict, where technology and industrial might had far outpaced long-outdated notions of strategy and tactics. (Matt Leonard) It is difficult to comprehend what the underground world of the Western Front would have been like, and very difficult to reconstruct today. For the 2012 television adaption of Sebastian Falks novel Birdsong, producers attempted to build an accurate replica of part of the vast network of tunnels, believed to be the first undertaking of this kind. However for those studying Birdsong or conflict archaeology this simulation provides an alternative immersive experience to explore the conflict landscapes and material culture of the First World War. The simulation takes you on a journey through an underground tunnel network, as you descend underground though a mine shaft and explore the tunnels you can listen to Matt Leonard, conflict archeologist, explain how men survived in this environment. Within the simulation are contemporary photographs and film footage from the Durand Group, a world-authority on subterranean warfare during the First World War.
    [Show full text]
  • State Highway 5 Tumunui Tomo - a Case of Road Resilience to Piping in the Rotorua-Taupo Area Proc
    Martins, P. & Van Toan, D. (2017) State Highway 5 Tumunui tomo - a case of road resilience to piping in the Rotorua-Taupo area Proc. 20th NZGS Geotechnical Symposium. Eds. GJ Alexander & CY Chin, Napier State Highway 5 Tumunui tomo - a case of road resilience to piping in the Rotorua-Taupo area P Martins Beca Ltd, Tauranga, NZ [email protected] (Corresponding author) D Van Toan Beca Ltd, Auckland, NZ [email protected] Keywords: piping erosion, tomo, road resilience, Rotorua-Taupo ABSTRACT On 23 June 2016, following a heavy rain event, a section of SH5 at the locality of Tumunui, about 18km south of Rotorua, was closed due to flooding. When the water recessed a little, significant damage to the road and adjacent properties was revealed. The New Zealand Transport Agency - Bay of Plenty East Network Outcomes Contract (BoPE NOC) is the road asset management contract covering the damaged section of SH5. Due to the immediate risk to road users arising from the event, the geotechnical incident response procedure of the BoPE NOC was triggered. Based on the geotechnical investigation undertaken it was concluded that the damage sustained by SH5 at Tumunui was due to reactivation of a naturally occurring internal erosion process that had been developing across the area since at least the 1970’s. The process is intrinsically associated with the geomorphic context of the site and the underlying geology. Following the event, a risk assessment was undertaken and concluded that with management controls in place it was possible to keep the road partially open to traffic.
    [Show full text]
  • Proceedings of The
    Proceedings of the Volume One 17th INTERNATIONAL CONGRESS OF SPELEOLOGY Sydney, NSW, Australia July 22–28, 2017 Proceedings VOLUME 1 Edited by Kevin Moore Susan White 2017 Proceedings of the 17th International Congress of Speleology i 17th INTERNATIONAL CONGRESS OF SPELEOLOGY Sydney, NSW, Australia July 22–28, 2013 Proceedings VOLUME 1 Produced by the Organizing Committee of the 167th International Congress of Speleology. Published by the Australian Speleological Federation Inc and Speleo2017 in the co-operation with the International Union of Speleology. Design by Kevin Moore Layout by Kevin Moore Printed in Victoria Australia Te contributions were assisted with language and edited. Contributions express author(s) opinion. Recommended form of citation for this volume: Moore K., White S. (Eds), 2017. Proceedings of the 17th International Congress of Speleology, July 22–28, Sydney, NSW Australia Volume 1, Australian Speleological Federation Inc. Sydney. ISBN 978-0-9808060-5-2-07-6 © 2017 Australian Speleological Federation Inc, Tis work is licensed under Creative Commons Attribution ShareAlike International License (CC-BY-SA). To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. Individual Authors retain copyright over their work, while allowing the conference to place this unpub- lished work under a Creative Commons Attribution ShareAlike which allows others to freely access, use, and share the work, with an acknowledgement of the work’s authorship and its initial presentation at the 17th International Congress of Speleology, Sydney NSW Australia. Cover photo : Keir Vaughan-Taylor on Lake 2, Koonalda Cave, Nullarbor Plain. (Photo by Kevin Moore) Back Cover : Te Khan and Beagum in Kubla Khan Cave Tasmania (Photo by Garry K.
    [Show full text]
  • Lower Hillsborough River
    Technical Concerns That Support a Recommendation for the Re-evaluation of the Minimum Flows Recovery Strategy for the Lower Hillsborough River Report Submitted to: The Southwest Florida Water Management District and The Florida Department of Environmental Protection By: Michael S. Flannery Retired - formerly Chief Environmental Scientist with the Springs and Environmental Flows Section Southwest Florida Water Management District November 4, 2015 (includes minor revisions to report submitted to SWFWMD on November 7, 2014) Table of Contents Executive Summary.......................................................................................................iv 1 The technical approach of this report......................................................................1 2 Overview of the adopted minimum flows for the Lower Hillsborough River ......1 3 Status of the Recovery Strategy for the Lower Hillsborough River......................3 3.1 Costs for construction of the projects identified in the recovery strategy ........................................................................................................4 3.2 Minimum flow diversions that have been implemented from Sulphur Springs and the Tampa Bypass Canal .......................................5 3.3 Status of the Blue Sink and Morris Bridge Sink projects.........................8 4 Technical concerns - There should be a greater reliance on the Tampa Bypass Canal to provide minimum flows................................................................9 4.1 The minimum flows
    [Show full text]
  • Topological Navigation and Localization in Tunnels—Application to Autonomous Load-Haul-Dump Vehicles Operating in Underground Mines
    applied sciences Article Topological Navigation and Localization in Tunnels—Application to Autonomous Load-Haul-Dump Vehicles Operating in Underground Mines Mauricio Mascaró, Isao Parra-Tsunekawa, Carlos Tampier and Javier Ruiz-del-Solar * Advanced Mining Technology Center, Department of Electrical Engineering, Universidad de Chile, Santiago 8370451, Chile; [email protected] (M.M.); [email protected] (I.P.-T.); [email protected] (C.T.) * Correspondence: [email protected] Abstract: Mobile robots are no longer used exclusively in research laboratories and indoor controlled environments, but are now also used in dynamic industrial environments, including outdoor sites. Mining is one industry where robots and autonomous vehicles are increasingly used to increase the safety of the workers, as well as to augment the productivity, efficiency, and predictability of the processes. Since autonomous vehicles navigate inside tunnels in underground mines, this kind of navigation has different precision requirements than navigating in an open environment. When driving inside tunnels, it is not relevant to have accurate self-localization, but it is necessary for autonomous vehicles to be able to move safely through the tunnel and to make appropriate decisions Citation: Mascaró, M.; at its intersections and access points in the tunnel. To address these needs, a topological navigation Parra-Tsunekawa, I.; Tampier, C.; system for mining vehicles operating in tunnels is proposed and validated in this paper. This system Ruiz-del-Solar, J. Topological was specially designed to be used by Load-Haul-Dump (LHD) vehicles, also known as scoop trams, Navigation and Localization in operating in underground mines. In addition, a localization system, specifically designed to be Tunnels—Application to used with the topological navigation system and its associated topological map, is also proposed.
    [Show full text]
  • Changing Relationships to the Power of the Falls an Interpretive Vision for the East Bank of St
    CHANGING RELATIONSHIPS TO THE POWER OF THE FALLS AN INTERPRETIVE VISION FOR THE EAST BANK OF ST. ANTHONY FALLS NOVEMBER 2013 ST. ANTHONY FALLS HERITAGE BOARD Minneapolis, MN Table of Contents CHANGING RELATIONSHIPS TO THE POWER OF THE FALLS: An interpretive vision for the East Bank of St. Anthony Falls Executive Summary 1 East Bank Overview 1 Major Recommendations 2 Investment and Partnership Opportunities 2 Power of the Falls 3 Visitor Orientation and Engagement 10 Visitor Orientation Center 11 Interpretive Gateways 15 Gateway 1: Confluence Walking Map 16 Gateway 2: East Falls Overlook 18 Gateway 3: Changing Main Street 20 Interpretive Locations and Trails 23 East Falls 24 River Ecosystems 28 Chalybeate Springs 32 Tunnels and Caves 36 Hydroelectric Sites 40 Pillsbury A Mill Complex 44 Programs 48 Investing in the Visitor Experience 50 A Desirable Destination for Tourists A Growing Downtown Residential and Commercial Community Partnership Opportunities for the East Bank 52 Land Owners and Program Partners Promotion and Marketing Partnerships Financial Partners Action Steps in a Dynamic Context 56 Community Input 58 ii St. Anthony Falls Heritage Board Acknowledgements SAINT ANTHONY FALLS HERITAGE BOARD MEMBERSHIP 2013 D. Stephen Elliott (Chair) Director of the Minnesota Historical Society R.T. Rybak Mayor of the City of Minneapolis Linda Higgins (Opat’s Designee) Chair of the Hennepin County Board of Commissioners John Erwin President of the Minneapolis Park and Recreation Board Jayne Miller Superintendent of the Minneapolis Park and Recreation
    [Show full text]
  • Effect of Logging on Subsurface Pipeflow and Erosion: Coastal Northern California, USA
    Erosion, Debris Flows and Environment in Mountain Regions (Proceedings of the Chengdu Symposium, July 1992). IAHS Publ. no. 209, 1992. 187 Effect of logging on subsurface pipeflow and erosion: coastal northern California, USA R. R. ZIEMER Pacific Southwest Research Station,,USDA Forest Service, Arcata, California 95512, USA Abstract Three zero-order swales, each with a contributing drainage area of about 1 ha, were instrumented to measure pipeflows within the Caspar Creek Experimental Watershed in northwestern California, USA. After two winters of data collection, the second-growth forest on two of the swales was clearcut logged. The third swale remained as an uncut control. After logging, peak pipeflow was about 3.7 times greater than before logging. Before logging, little sediment was transported through the pipes. Suspended sediment concentrations before logging were less than 20 mg l-1 and coarse-grained sediment was rare. After logging, there was great spatial and temporal variability in sediment transport. Sediment loads increased dramatically from some pipes during some storms, but from other pipes, sediment discharge remained unchanged after logging. INTRODUCTION Soil piping was originally an engineering term used to describe concentrated subsurface erosion of dams and levees caused by seepage force under a positive hydraulic head (Terzaghi & Peck, 1948). Some of the first work to consider the importance of piping to subsurface water transport in natural slopes was undertaken by Whipkey (1967, 1969) and Aubertin (1971). Both of these authors studied piping in the Allegheny-Cumberland Plateau region in the east- central United States. Whipkey and Aubertin both concluded that piping raised the overall hydraulic conductivity of soils and that macropores rapidly intercepted and routed subsurface water.Subsequently, piping in natural landscapes has been observed in highly varied settings, ranging from arid to humid regions and greatly differing geological and vegetative conditions throughout the world (Baillie, 1975; Jones, 1981).
    [Show full text]