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隧道施工超前地质综合预报技术及应用
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摘要
隧道施工,特别是复杂地质条件下的深埋长隧道施工往往面临很多地质灾害问题,施工前难以对隧道沿线的断层、溶洞、破碎岩体等不良地质情况有全面准确的掌握,而在施工过程中如果扰动了这些不良地质体就有可能导致突涌水、塌方等严重地质灾害,造成重大安全事故和严重的生命财产损失,为了避免这些灾害事故的发生,必须进行超前地质预报,探明隧道掌子面前方不良地质条件,并采取必要的地质灾害防治措施,以确保工程顺利推进。本文建立了短距离预报与长距离预报相结合、钻探与物探相结合、超前预报与地质分析相结合的隧道施工超前地质综合预报体系,并用于隧道工程实践中,对比预报结果与施工验证结果,两者基本一致,取得了较好的预报效果。
Tunnel construction in particular deep long tunnel under complicated geological conditions of the construction of are often faced with many geological disasters problems.It is difficult to grasp accurately adverse geological conditions along the tunnel such as fault,cave,and broken rock etc.It may be lead to serious geological disasters such as sudden gushing and collapse if these adverse geological are disturbed during the construction process,leading to considerable safe accidents and serious life and property loss.In order to avoid the occurrence of such disasters,geological prediction must be carried out.Adverse geological conditions must be ascertained in face tunnel.And the necessary measures for prevention of geological disasters must be taken to ensure the smooth progress of project.This paper establishes advanced geological comprehensive prediction system of tunnel construction combination short range with long range prediction,combination drilling with geophysical prospecting,combination advanced prediction with geological analysis.And for engineering practice,compared prediction results with verification results,they are basically the same,get better prediction results.
引文
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