碳酸盐岩地区隧道综合超前地质预报方法研究  

Study on Comprehensive Advanced Geological Prediction Method of Tunnel in Carbonate Rock Area

作　　者：王楷翔 宫亮 WANG Kaixiang;GONG Liang(CCCC First Engineering Co.,Ltd.,Beijing102205,China)

机构地区：[1]中交一公局第一工程有限公司,北京102205

出　　处：《施工技术（中英文）》2023年第10期83-89,共7页Construction Technology

摘　　要：岩溶广泛发育于碳酸盐岩地区,岩溶现象给隧道施工带来了巨大的挑战与威胁。为应对复杂的岩溶地质条件,地质超前预报成为岩溶地区隧道施工过程中不可或缺的重要工序。提出采用“地质调查法+Geode EM3D+地质雷达法”综合地质预报方法应对碳酸盐岩地区复杂的隧道施工问题。以当远铁路毛家坡隧道为工程依托,先采用地质调查法初步判定隧道在施工中可能出现的不良地质构造,再采用Geode EM3D的电阻率大小判断目的体的性质及形态,并将大致规模及发育情况直观地表现出来。得到不良地质区域后,再采用洞内地质调查与地质雷达法准确地探测掌子面前方地质情况。最后将综合地质预报法的结果与现场开挖情况进行对比分析,结果表明该方法能基本准确地探明碳酸盐岩地区不良地质情况,能有效地指导隧道下一步施工。Karst is developed in carbonate rock areas,and karst phenomenon brings great challenges and threats to tunnel construction.In order to cope with the complex karst geological conditions,advanced geological prediction becomes an indispensable and important process in the process of tunnel construction in karst areas.A comprehensive advanced geological prediction method of“geological survey method+Geode EM3D+geological radar method”is proposed to deal with the complex tunnel construction problems in carbonate rock areas.Based on the Dangyuan Railway Maojiapo Tunnel,the geological survey method is firstly used to determine the possible adverse geological structures in the tunnel construction,and then the resistivity of Geode EM3D is used to determine the nature and form of the target body,and to visualize the general scale and development.After getting the adverse geological area,the geological situation in front of the palm face is then accurately detected using the cave geological survey and geological radar method.Finally,the results of the integrated advanced geological prediction method were compared and analyzed with the excavation situation on site,and the results show that the method can basically and accurately detect the bad geological situation in carbonate rock area,and can effectively guide the next tunnel construction.

关 键 词：隧道 碳酸盐岩 岩溶 地质超前预报 

分 类 号：U455[建筑科学—桥梁与隧道工程]