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THE ALIGNMENT FROM THE EDITOR IN CHIEF’S DESK There are certain events, which get etched in tunnels in Katra- Banihal section. One such memory everlastingly. USBRL team will for tunnel in Sumber area of length 12.75 km is eternity, remember the monumental day of under construction and will be the longest 5th Nov, 2017, when first segment of main transportation tunnel of country in few years arch of Chenab was launched in presence of time surpassing our own Pirpanjal tunnel. As Member Engineering, Railway Board and we enter a new year, we will maintain this National Media. Construction of Chenab momentum & assiduous spirit and get Bridge is a massive challenge for Railways, through every challenge to realize the dream not only due to quantum of work, but also of timely accomplishment of this national due to complex geology of Himalayas project. coupled with difficult terrain, inadequate A.K. SACHAN USBRL had documenting its fascinating infrastructure and logistic support. But, the Editor-In-Chief journey by periodical publication of project undying spirit and tireless endeavors of magazine “Himprabhat” to share and USBRL team has beginning to bear fruition. CONSTRUCTION disseminate knowledge and experiences in OF CHENAB The dream is turning into reality. There is BRIDGE IS A execution of challenging Railway line in another salient Bridge, called Anji Bridge, MASSIVE Himalayas. This journey moves into double coming up in Reasi district. It is the first CHALLENGE FOR digit now. This publication includes very RAILWAYS, NOT cable stayed Railway Bridge. Work has ONLY DUE TO useful articles and case studies which will commenced on this Bridge. QUANTUM OF definitely inspire Engineers & Professionals WORK, BUT ALSO USBRL has tamed the mighty PirPanjal DUE TO COMPLEX alike and enrich them with fruitful range of Himalayas and constructed country’s GEOLOGY OF knowledge and information. longest transportation tunnel in 2013, HIMALAYAS Tunneling is becoming necessity in COUPLED WITH linking, thereby, Kashmir valley with Jammu DIFFICULT different parts of the world and, of course, region at Banihal town of Ramban district. TERRAIN, tunneling in Himalayas is the most INADEQUATE Thousands of natives have been travelling INFRASTRUCTURE challenging task due to surprises and daily to Srinagar and other parts of Kashmir AND LOGISTIC imponderables. In-depth Knowledge of valley through island Railway line in valley. SUPPORT. BUT, behavior of tunnel during execution and as THE UNDYING The journey since ever is continuing. SPIRIT AND well as operational stage is of paramount USBRL is already TIRELESS importance from safety point of view. Sh. ENDEAVORS OF constructing USBRL TEAM HAS H.K.Sharma and Sh. H. Manchanda from significantly long BEGINNING TO M/s Geodata has beautifully narrated the BEAR FRUITION importance of instrumentation and monitoring systems investigations. During the geological investigation to be followed in tunneling. The authors has also covered adequate analysis of geological complexities are carried a case study of tunnel T-2 on Katra-Banihal section. out, which are inputs for the analysis and design of Results of instrumentations and monitoring have been structures. The two official viz. Dr. Joginder Singh and showcased comparing to the designed values, which is Sh. Amit Sherpuri Geologists of KRCL have brought highly relevant and useful to the readers and practicing forward the geological studies involved in the finalization engineers. of alignment of Anji Bridge. The authors have beautifully The article by Sh. Rohilla Vinod and Sh. Surinder Pal narrated the intricacies of geology of the bridge area, of M/s Lombardi Engineering India Pvt. Ltd. on Tunnel illustrating various geological features through lighting in Railway tunnel projects have profoundly photographs and sketches in their article. covered the need of lighting system in tunnel to facilitate Sh Praveen Kumar, young dynamic IRSE officer constant traffic volume and speed in the tunnel posted as Executive Engineer Reasi, has beautifully throughout day light hours. The authors also threw a narrated the slip form construction technology. The light on some results performed with DIALUX officer has shared his experience of the slip form simulation software on tunnel T-49. construction work at pier P-9 of bridge no.43 on Katra- USBRL has been involved in finalization of myriad of Banihal section. global consultancy contracts. Mr. Hannes Ertl, and Mr. There has been significant engineering development V. Shukla of D2 Consult International Austria, have in the field of rock mechanics and slope stabilization thrown a light on FIDIC contracts in underground techniques. State of the art methods have been constructions. FIDIC is a French language acronym for implemented for stabilizing the slopes of Chenab Bridge. the international federation of consulting engineers. The High tensile strength anchors, DYWIDAG rock anchors authors have given an overview on the currently available were installed on some slopes of the foundation of contract forms and outline its benefits and limitations Chenab Bridge for strengthening. Sh. Ajeet Singh towards the underground constructions. Sr.Geologist of CBPU has beautifully covered the case Sh. P.S. Gupta, the then Chief Engineer /KRCL and study of installation of DYWIDAG bar rock anchors at Sh. R.K. Singh CE/Chenab/KRCL have come up with Chenab bridge site, which is quite relevant for engineers an article covering the assessment and validation of safe and professionals. bearing capacity of the foundations of Chenab bridge. Most of the major bridges on Katra-Banihal section The authors have thoroughly analyzed the result of have been planned as composite bridges. Sh. Kapil various investigations carried out at Chenab bridge site Grover Senior Section Engineer, USBRL has thrown and compared with different methods for validation. The enterprising light on the composite concrete article is worth reading for practicing engineers as constructions. contents are the first hand experience of the engineers We should like to express our gratitude to all our directly associated with the work. readers, engineers, consultants, and executive agencies for Any important project in Himalayas would be their valuable contribution for successful publication of incomplete, without carrying out proper geological USBRL technical magazine “Himprabhat”. CONTENTSISSUE X FEBRUARY 2018 TUNNELS Instrumentation and Monitoring of Tunnel T2 (between km. 33+212 to km. 38+375 of Katra to Dharam Section of Udhampur- Srinagar-Baramulla New BG Railway Project / 14 Tunnel Lighting in Railway Tunnel Projects & Dialux Simulation for Tunnelt-49 (Udhampur-Srinagar- Baramulla New BG Railway Project / 32 FIDIC Contracts in Underground Constructions, Current Practice and Future Developments / 38 BRIDGES Evaluation of safe bearing capacity for the foundation at S40 D/S of Chenab Bridge / 42 Geology of the Anji Bridge alignment on Katra-Qazigund Rail line section, USBRL Project, Reasi, District-Jammu & Kashmir / 65 Slipforming: Sharing an experience at Bridge No. 43, Bakkal of USBRL Project / 72 Dywidag Rock Anchors in the context of Chenab Bridge / 82 Steel-Concrete composite construction — New Trend in India / 88 EDITORIAL EDITORIAL BOARD ASSOCIATE EDITORS CREATIVE EDITORS A.K. SACHAN G.S. HIRA B.B.S. TOMAR R.K. HEGDE HUSSAIN KHAN Chief Administrative Financial Advisor & Chief Chief Engineer/North Chief Engineer/ Dy. CE/Design/USBRL Officer Accounts Officer/USBRL Coord./KRCL and SANDEEP GUPTA MATIN AHMED Editor in Chief RANDHAWA SUHAG Chief Engineer/South A.K. GOYAL Secy. to CAO Chief Electrical Engineer/USBRL Executive Director/IRCON CAO/USBRL/JAT PHOTO GALLERY CONFERENCE ON TUNNELING IN HIMALAYAN GEOLOGY (Above): Sh. Ashwani Lohani, Chairman Railway Board releasing 9th issue of “Himprabhat” during the inaugural session of Tunnelling Conference on 11.10.17. (Below left to right): Launching of First segment of Arch Span of Chenab Bridge during visit of Sh. M.K. Gupta Member Engineering Railway Board on 05-11-2017 and Placing in position of 27.38 MT (Approx.) first segment of Arch Span of Chenab Bridge FEBRUARY 2018 7 HIM PRABHAT PHOTO GALLERY PROJECT PHOTO GALLERY SITES (Clockwise from far left): Portal development work at Tunnel T-74R; Loading of Explosives in Tunnel T-15; Bridge No. 121 in Arpinchala area of Katra-Banihal section; S-50 foundation of Chenab Bridge at Kauri end and Face Drilling in progress in Main Tunnel of T5 P1 at Reasi using Boomer (Clockwise from above): Forepoling activity is in progress using Boomer in Tunnel T-2 near Reasi; DMUs at Budgam Railway Station, Kashmir; Forepoling under process in Tunnel T-15; Rock bolting activity is in progress in Tunnel T-5 and Water proofing membrane fixing at Tunnel T5P2 HIM PRABHAT 10 FEBRUARY 2018 FEBRUARY 2018 11 HIM PRABHAT PHOTO GALLERY (Above): Bridge No. 142, connecting tunnel T-77D with tunnel T-78 (Below): DMUs in Budgam station yard in Kashmir HIM PRABHAT 12 FEBRUARY 2018 (Above) Drilling of drainage holes in Tunnel T-48. (Below) Ariel view of Kauri end foundations of Chenab Bridge (captured by Drone). TUNNELS INSTRUMENTATION AND MONITORING OF TUNNEL T2 (BETWEEN KM. 33+212 TO KM. 38+375 OF KATRA TO DHARAM SECTION OF UDHAMPUR-SRINAGAR- BARAMULLA NEW BG RAILWAY PROJECT Sharma H.K.1 and Manchanda H2 Project Head1, Tunnel T2, Geodata Engineering, Reasi, Jammu & Kashmir Project Manager2, Geodata India Pvt. Limited, New Delhi-110038 Email: [email protected], [email protected] ABSTRACT Tunnels are multi-purposes structures fulfilling several needs of the society. They are capital intensive structures and their failure can be catastrophic. Instrumentation for monitoring the behavior of these structures both during construction and in operation is crucial from its safety point of view and is considered an important activity integral to the Project. This paper brought forward the instrumentation and monitoring scheme adopted for Tunnel T2 of Karta Dharam section of USBRL project. The paper also discusses the importance of planning and discusses various steps involved in designing any successful monitoring scheme for Tunnels. INTRODUCTION ponents of the structure.