摘要
深埋隧道工程地质和水文地质条件复杂多变,盲目施工常会造成突水、突泥(涌砂)和塌方等安全事故,深入细致的超前地质预报工作是隧道信息化设计和施工的重要依据之一。以高风险岩溶隧道沪蓉西高速齐岳山隧道为工程背景,结合地震波传播理论和TSP超前地质预报实践,研究了岩溶隧道内断层破碎带,泥夹石充填型、软弱夹泥充填型、地下水充填型和无充填型溶洞,以及富水岩层的地震波反射特性;提出了以深度偏移为主要依据,并结合反射层图、反射事件表、纵横波速和岩体物性参数分析的预报方法,该方法可以有效提高TSP对断层破碎带、溶洞、和地下水的超前地质预报效果,对类似工程具有一定的借鉴意义。
For deep tunnels their engineering geological and hydro - geological conditions are highly changeable and complex. Rough construction often triggers or produces accidents, such as water flush, mud （ sand ） inrush, collapse etc. For informational dynamic design and construction of tunnels, it is of vital importance to carry out advanced geologic forecasting. Based on the engineering background of Qi Yueshan Tunnel, a high risk karst tunnel in the western section of Hu - Rong expressway, combined with seismic propagation theory and TSP geological prediction practices, studies were done on reflection characteristic of seismic wave, while waves meet fault fracture zones, underground water , rock stratum with rich water, and karst caves filled with clay and stone , or soft clay, or water, or with no fillers. A prediction method is proposed with advance geological prediction effect, for fault fracture zones, karst caves and underground water, can be effectively improved on the main basis of depth migration analysis, with integration of analysis on diagram of reflector, event browser, velocity of compressional waves （ P - waves ） and shear waves （ S - waves ）, and physical parameters of rock mass.
出处
《地下空间与工程学报》
CSCD
2008年第4期640-644,716,共6页
Chinese Journal of Underground Space and Engineering
基金
国家863计划(2007AA11Z131)
国家973计划专题(2007CB209407)
国家自然科学基金委重点项目(5072790450539080)
山东省科技攻关项目(2006GG2208011)
关键词
TSP
深度偏移
断层破碎带
溶洞
地下水
TSP
depth migration
fault fracture zones
karst caves
undergroud water
作者简介
许振浩（1985-），男，土家族，湖北恩施人，硕士研究生，主要从事高风险岩溶隧道不良地质超前预报与综合治理方面的研究。E-mail：issacxuzhenhao@163．com
