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| Research on the Jiezipo Syncline Karst Water System and Hazard of Water-gushing-and-bursting in Tunnel |
| DU Yu-ben1,ZHANG Q iang2, JIANG Liang-wen1,XU M o2 |
| 1.China Railway Eryuan EngineerringGroup Co. Ltd, Chengdu, Sichuan 610031, China; 2. Chengdu University of Technology, Chengdu, Sichuan 610059, China |
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Abstract Research purposes: The DazhushanTunnel of theDali-RuiliRailway goes through Jiezipomultiple syncline water-rich geological structure composed of Jiezipomultiple syncline hydro -geological unit and Banjiazhai hydro -geologicaluni.t The folding and fracture structure are complicated and the karstwater is active, so there is relatively high risk forkarst tunnel construction. By researching the Jiezipomultiple syncline karstwater system and the hazard of watergushing-and -burstingwater in tunne,l the hazard ofwater-gushing-and -bursting ispredicted and evaluated effectively forhelping a safe and successful construction of the tunnel and providing the reference to the analysis of the hazard ofwater-gushing and bursting in the similarkarstwater-rich structure.
Research conclusions:The research on the risk assessment system forwater-gushing and bursting in tunnel shows the high risk grade ofwater-gushing and bursting in Jiezipomultiple syncline ofDazhushan tunnelmainly belongs to the high -risk and medium -risk range, and the Jiezipo multiple syncline is a water storage structureswith high risk of water-gushing and bursting in construction of the tunnel.
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Received: 08 September 2009
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2009, Vol. 26 
