提高TSP超前地质预报准确性的研究与对策
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摘要
大量的施工实践证明,在隧道施工中对掌子面前方围岩进行超前地质预报是非常必要的,不仅可以避免施工过程中不良地质灾害的发生或将地质灾害影响降到最低,还可以及时调整或修正围岩级别,优化设计参数及施工方法,以加快施工进度,降低施工成本。在当前隧道施工中,TSP作为一种地震波探测方法,是超前地质预报多种技术中最重要的手段。本文详细介绍了隧道施工中TSP超前地质预报系统的原理、特点及准确性现状,并通过大量的TSP超前地质预报现场实践,对影响TSP超前地质预报准确性的相关问题进行了深入的分析和研究,提出了相应的对策和措施,有效地提高了超前地质预报的准确性,正确指导现场施工。
Lots of construction practices have proved that advanced geological forecast is very important for excavation face during tunnel construction. By such forecast,we can not only avoid or reduce the geological disaster but also can optimize the design and construction method,accelerate the construction progress and reduce the construction cost. In the tunnel construction,as a method of detecting seismic wave,TSP is the most important approach. According to lots of TSP practices,this paper introduces the principle,feature,and reliability of TSP in detail; makes a detailed analysis about factors that affect the forecast result. Based on the analysis above,this paper points out the measures about increasing the accuracy of TSP and to direct correctly the site construction.
引文
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