沪昆客专小高山隧道突水突泥及致灾原因探析  

Mechanism Analysis and Water and Mud Breakout in the Xiaogao Mountain Tunnel in Shanghai-Kunming Passenger Dedicated Railway

作　　者：张会刚[1] 张广泽[1] 毛邦燕[1] 

机构地区：[1]中铁二院工程集团有限责任公司,成都610031

出　　处：《铁道工程学报》2016年第8期66-70,84,共6页Journal of Railway Engineering Society

摘　　要：研究目的:针对小高山隧道施工期间发生的岩溶突水突泥地质灾害问题,在钻探、物探、地表调查基础上采取岩溶管道间水力分析法、岩溶洼地分析法、水痕调查法等综合分析方法,查明岩溶管道发育的规律及岩溶管道发生突水突泥的最大涌突水量,为泄水洞设置提供依据;同时对岩溶突水突泥发生的原因及对策进行探析。研究结论:(1)该隧道突水突泥为岩溶管道型,其致灾原因与周期降雨量、岩溶管道的冲淤循环、隧道施工造成岩溶管道壅堵、隧道衬砌及结构形式存在天然"硬伤"、隧底与岩溶管道间存在薄弱"隔水板"有关;(2)岩溶管道最大突水突泥量为108 288 m^3/h,泄水洞的设置起到泄水减压作用,确保结构稳定、运营安全;(3)对小高山隧道突水突泥致灾原因的分析,为岩溶隧道勘察、设计及突水突泥应急处理提供参考依据。Research purposes ： During the process of the construction, the geological hazard of water and mud breakout occurs in the Xiaogao Mountain Tunnel. Based on the drilling, geophysical exploration and surface investigation, the comprehensive analysis method, such as the hydraulic analysis method, the karst depression analysis method, the water mark investigation method, is adopted, the law of the development of karst pipeline and the maximum water amount of water and mud breakout are found out, which provides the basis for the drain tunnel. The causes and countermeasures of the occurrence of water and mud breakout are analyzed. Research conclusions： （1） The water and mud breakout is karst pipeline type in the Xiaogao Mountain Tunnel. The disaster cause is related to the periodic rainfall, the blocked karst pipeline caused by construction, the natural flawed in tunnel lining and structure, the weak watertight board between the bottom of the tunnel and the karst pipeline. （2） The largest water and mud breakout amount of the karst pipeline is 108 288 m3/h and drain cave settings should play a role to release water pressure, to ensure the safety of structure and operation. （3） The analysis of the cause of the water and mud breakout in the Xiaogao Mountain Tunnel provides the reference for the investigation and design of the karst tunnel and the emergency treatment of the water and mud breakout.

关 键 词：客运专线 岩溶隧道 突水突泥 原因探析 

分 类 号：P642.25[天文地球—工程地质学]