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Abstract of the Article

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Stability analysis and design of propping system in LAVASAN water transfer tunnel

Authors:
[ MAJID NOORIAN BIGHDELI ] - mine extraction MS
[ KOOROSH SHAHRIAR ] - professor assistant of SHAHID BAHONAR University in KERMAN
[ MEHDI AFSARI NEJAD ] - professor assistant of SHAHID BAHONAR University in KERMAN

Abstract:

LAVASAN water transfer tunnel is in 30 km distance of north of Tehran and is under the height of LAVASAN. This tunnel is one part of LAVARAK-SOOHANAK water transferring plane that that with making use of that some part of LAR dam’s water transfer to the treatment plane of TEHRANPARS. This tunnels way is transfer from the KONGOLOMEYAYI layers. This paper explain stability of tunnel and choosing the propping system with making use of the ROCK 1.0 software and in each model after analysis the stability suitable analysis method are defined for tunnel. With having geotechnical information of tunnel and seen the section of tunnel and activated the boundary condition like: condition of basement water in the zone they build many model in FLAC 4.0 software. All accounts are done in 3 parts: before excavation the tunnel, after excavation the tunnel, after erecting the system and all strains and deformation are accounted in each part. In the end for controlling and anchoring the deformation around the tunnel with looking at the different available element in FLAC software and modeling them with the condition of the zone, suitable system was defined for LAVASAN tunnel.

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