研究结论:根据水文地质和工程地质调查,并结合物探及钻探资料综合分析表明:隧道所处区域构造发育,断层破碎带导水性好,导致地下水发育;地下水分布以断层带水和基岩裂隙水为主,一般断层带水为强富水,而基岩裂隙水为弱富水-中等富水,隧道集中涌水段主要发生在断裂构造发育地带。由于隧道断层带涌水量较大,并会出现突泥涌砂情况,因此防护措施应以堵为主,施工期间应做好超前地质预报。

Research conclusions:The hydrogeologicaland engineering geological survey and the comprehensive analysesof the data obtained from geophysicalprospecting and drilling indicate that in the tunnel area, the developmentof regional structure and the rich -water conductivity of the fracture zone of the fault lead to the groundwaterdevelopmen.t The groundwater mainly contains the faultzonewater and the bedrock fissurewater. Generally, the faultzonewater is heavy richwater,while the bedrock fissurewater isweak -medium richwater. The concentrated inrushwater segments of the tunnel are mainly in the zone of developed faults. As the inrush water of fault is large and the inrush may happen, the water blocking should be as the main protective measures and the geological forecast in advance should be well conducted during the construction period.