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Abstract of the Article

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Rock burst Hazard and its Prediction at Cheshmeh Langan Tunnel

Authors:
[ R. Taki ] -
[ K. Shahriar ] -
[ M. Afsari Nejad ] -

Abstract:

Rock burst usually occurs as a violent failure in deep underground mines and tunnels. As a result of this phenomenon, rock fragments are thrown through the air, which may cause danger to workers and damage to equipment. Therefore it is necessary to have a good knowledge of rock burst and its fnechanism in order to minimize its fatal consequences. In this regard engineering properties of rock, state of in-situ stresses, redistribution of stress and rock deformation characteristics play important roles. This paper presents the results of rock burst prediction at Cheshmeh Langan Tunnel located 176 Krn far from Esfahan, toward the west. The tunnel has been driven in Safid Mountain at depth 1 100 m below the surface. The results of current study show that at center zone of working where depth increases, a high potential risk of rock burst is predictable. Therefore to provide an appropriate environment for both workers and equipment, it seems necessary to take safety measures in this respect.

Keywords:

Cheshmeh Langan Tunnel, Rock burst, Strain Energy, Safety.