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BERGMEKANIKDAG 2012 Föredrag BERGMEKANIKDAG 2012 Föredrag Box 5501 [email protected] s www.befoonline.org ISSN 0281-4714 SE-114 85 Stockholm Besöksadress: Storgatan 19 319663_Omslag_BM-dagen_9mm.indd 1 2012-03-05 12.38 BERGMEKANIKDAGEN 2012 08.30 Registrering, Kaffe/The 09.00 Inledning Per Tengborg, BeFo Presentation av EU-projekt: Intelligent Innovative Deep Mine Erling Nordlund, Luleå tekniska universitet Inbjudna gästföreläsare: Bergmekanisk forskning och utveckling i Norge/Finland Charlie Li, NTNU, Norge Mikael Rinne, Aalto University, Finland 10.00 Förundersökningar och labbtester - Inledare: Beatrice Lindström, Trafikverket Förbifart Stockholm - Borrhålsundersökningar som underlag för byggande i berg Tomas Svensson, Geosigma / Kent Hansson, Geosigma / Eva Samuelsson, Geosigma / Calle Hjerne, Geosigma 10.30 Kaffe, The & Frukt Influence of heat on the physical and mechanical properties of selected rock types - A laboratory study Christine Saiang, Luleå University of Technology Laboratory study on the impact of matedness on the peak shear strength of rock joints Ahmed El-Sayed, Ramböll / Fredrik Johansson, KTH/Sweco 11.30 Utmaningar vid bergbyggande - Inledare: Per Tengborg, BeFo Brytningsrelaterade utmaningar hos Rana Gruber Kristina Jonsson, Rana Gruber, Norge Susanne Nävermo Sand, Rana Gruber, Norge 12.00 Lunch 13.00 En miljövänlig metod för bergbrytning - hydraulisk spräckning Ulf Håkansson, Skanska/KTH / Yanting Chang, Geton Consulting / Erik Ahnberg, Emstone Dynamisk belastning av fallande fullborrningskrona Anders Nyström, Boliden Mineral / Per-Ivar Marklund Boliden Mineral / Anders Fredriksson SWECO Infrastructure / Gunnar Rådberg, Bergteamet 13.45 Inläckage & tätning - Inledare: Thomas Dalmalm, Trafikverket Silica sol injektering - rätt och fel Johan Funehag, Chalmers tekniska högskola/Tyréns Karakterisering av berg i 2D och 3D för injektering Lisa Hernqvist, Vectura, tidigare Chalmers 14.30 Kaffe Observationsmetodens tillämpning på inläckande grundvatten i bergtunnlar – fallstudie: Norra länken i Stockholm Johan Spross, KTH / Hana Liszka, Trafikverket / Stefan Larsson, KTH Ny metod för tätning av injekterings- och bulthål i tunnlar Björn Sandström, WSP / Ingvar Bogdanoff, f.d. WSP/ Robert Engström / Trafikverket 15.30 Stabilitetsanalys - Inledare: Erling Nordlund, Luleå tekniska högskola Consideration of the rock mass property variability in numerical modeling of open slope stability Musa Adebayo Idris, Luleå University of Technology David Saiang, SRK Consulting (Sweden) Erling Nordlund, Luleå University of Technology Bedömning av stabilitet och tunnelförstärkning via numerisk modellanalys - Norra Länken Diego Mas Ivars, Itasca Consultants / Yoann Hebert, Itasca Australia Pty Ltd. /Daniel Billaux, Itasca Consultants SAS / Rocío Batres-Estrada, Sweco Infrastructure / Thomas Dalmalm, Trafikverket Metodförslag till tidig varning av spröda brott i djupa gruvor genom töjningsövervakning Yanting Chang, Geton Consulting 16.50 Utdelning av pris till årets föredragshållare Dagsprogrammet slut 17.00- Årsmöte - Svenska Bergmekanikgruppen 17.45 Medlemmar och icke-medlemmar är välkomna! 17.00- Festlig mingelbuffé 19.00 Huvudentrén Norra Latin, Norra Ljusgården STIFTELSEN BERGTEKNISK FORSKNING OCH SVENSKA BERGMEKANIKGRUPPEN Rock Engineering Research Foundation and National Group ISRM (International Society for Rock Mechanics) Föredrag vid BERGMEKANIKDAG I STOCKHOLM, 12 MARS 2012 Papers presented at Rock Mechanics Meeting in Stockholm, March 12th, 2012 Stockholm 2012 ISSN 0281-4714 Innehållsförteckning: sid. Förord Per Tengborg, BeFo ................................................................................................................................................ i Presentation av EU-projekt: Intelligent Innovative Deep Mine* Prof. Erling Nordlund, Luleå tekniska universitet Invited lecturers: Bergmekanisk forskning och utveckling i Norge/Finland* Prof. Charlie Li, NTNU, Norge Prof. Mikael Rinne, Aalto University, Finland FÖRUNDERSÖKNINGAR OCH LABBTESTER PRE-INVESTIGATION & LABORATOTY TESTING Inledare: Beatrice Lindström,Trafikverket Förbifart Stockholm - Borrhålsundersökningar som underlag för byggande i berg ............................. 1 Stockholm Bypass - Borehole investigations as a basis for rock construction Tomas Svensson, Geosigma AB/Eva Samuelsson, Geosigma AB/Kent Hansson, Geosigma AB /Calle Hjerne, Geosigma AB Influence of heat on the physical and mechanical properties of selected rock types - A laboratory study ...................................................................................................................................... 15** Christine Saiang, Avd. för Geoteknologi, Luleå Tekniska universitet Laboratory study on the impact of matedness on the peak shear strength of rock joint ...................................................................................................................................................... 23** Studie av passningens inverkan på skjuvhållfastheten för bergsprickor Ahmed El-Sayed, Ramböll / Fredrik Johansson, KTH/Sweco UTMANINGAR VID BERGBYGGANDE BUILDING IN ROCK - CHALANGES INVOLVED Inledare: Per Tengborg, BeFo Brytningsrelaterade utmaningar hos Rana Gruber ..................................................................................... 35 Mining related challenges at Rana Gruber Kristina Jonsson, Rana Gruber, Norge / Susanne Nävermo Sand, Rana Gruber, Norge En miljövänlig metod för bergbrytning – hydrauliskspräckning ................................................................ 47 Hydraulic splitting – an environmental friendly rock excavtion method Ulf Håkansson, Skanska/KTH / Yanting Chang, Geton Consulting / Erik Ahnberg, Emstone Dynamisk belastning av fallande fullborrningskrona ................................................................................... 57 Dynamic load caused by a falling raise boring head Anders Nyström, Boliden Mineral / Per-Ivar Marklund Boliden Mineral / Anders Fredriksson SWECO Infrastructure / Gunnar Rådberg, Bergteamet INLÄCKAGE & TÄTNING INFLOW & GROUTING Inledare: Thomas Dalmalm, Trafikverket Silica sol injektering - rätt och fel .................................................................................................................... 67 Grouting with silica sol - right and wrong Johan Funehag, Chalmers tekniska högskola/Tyrens Karakterisering av berg i 2D och 3D för injektering ................................................................................. 77 Characterization of rock in 2D and 3D for grouting Lisa Hernqvist, Vectura, tidigare Chalmers Observationsmetodens tillämpning på inläckande grundvatten i bergtunnlar – fallstudie: Norra länken i Stockholm .......................................................................................................... 89 On the Observational Method–Case Study: Groundwater Control in the Northern Link Rock Tunnel in Stockholm Johan Spross, KTH / Hana Liszka, Trafikverket / Stefan Larsson, KTH Ny metod för tätning av injekterings- och bulthål i tunnlar .................................................................... 101 New method for sealing pregrout and boltholes in tunnels Björn Sandström, WSP / Ingvar Bogdanoff, f.d. WSP, Robert Engström / Trafikverket STABILITETSANALYS STABILITY ANALYSIS Inledare: Erling Nordlund, Luleå tekniska högskola Consideration of the rock mass property variability in numerical modeling of open slope stability .................................................................................................................................. 111** Musa Adebayo Idris, Luleå University of Technology / David Saiang, SRK Consulting (Sweden) / Erling Nordlund, Luleå University of Technology Bedömning av stabilitet och tunnelförstärkning via numerisk modellanalys- Norralänken ............ 125 Tunnel support and stability assessment via numerical modeling – Norra länken Diego Mas Ivars, Itasca Consultants / Yoann Hebert, Itasca Australia Pty Ltd. /Daniel Billaux, Itasca Consultants SAS / Rocío Batres-Estrada, Sweco Infrastructure / Thomas Dalmalm, Trafikverket Metodförslag till tidig varning av spröda brott i djupa gruvor genom töjningsövervakning ............. 137 A proposed method for early warning of brittle failure in deep mines by strain monitoring Yanting Chang, Geton Consulting * Enbart muntlig presentation/Oral presentation only ** Artikeln är på engelska/Article in English FÖRORD BERGMEKANIKDAGEN 2012 INLEDNING Bergbranschen När man tittar tillbaka på vad mina företrädare Tomas Franzén och Mikael Hellsten skrivit i inledningarna till Bergmekanikdagen de senaste åtta åren, så får man intrycket att vi som verkar inom bergbranschen har haft en mycket lång period med högkonjunktur. Och förmodligen är det så att när man i en allmän lågkonjunktur gör offentligt finansierade infrastruktursatsningar så handlar det om stora långvariga projekt som pågår längre än den svacka i samhällstillväxten som ska överbryggas. Ser man framåt är det ett stort intresse för infrastruktursatsningar i landet med både konventionella och mer utmanade projekt. På Stora Infradagen 2012 som arrangeras av Maskinentreprenörerna talade Infrastrukturminister Catarina Elmsäter-Svärd och framhöll att det nu finns gott om pengar för projekt. Samtidigt varnade hon för att ”om det finns för mycket pengar och projekt samtidigt så får man mindre för pengarna” så man ska nog vara medveten om att politikerna kommer att ”hålla i slantarna”. Gruvnäringen var representerad på Stora Infradagen och under rubriken ”Gigantiskt gruv- och transportprojekt i norr lyfter hela Sveriges
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