大直径水底盾构隧道不良地质段及疑似溶洞探测技术的应用
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摘要
为探明江中盾构段存在的岩溶、裂隙发育带、岩层不整合面等不良地质情况,通过对4种物探方法的场地适应性试验,最终采用水域高密度电阻率法、高频大地电磁法及地震反射波法对过江隧道掘进区域内的不良地质体的赋存情况进行探查。通过对3种物探方法比对分析,基本查明了测区内岩土层的分布情况,查清了裂隙密集带、局部岩体节理裂隙发育区及溶洞可能发育区等不良地质体的分布位置,达到了预期目的。
Tests have been made on the field applicability of 4 geological prediction technologies,including high density resistivity technology,high frequency magnetotelluric technology,seismic reflection wave technology and transient electromagnetic technology.According to the testing results,the former 3 technologies are adopted to predict the geological conditions of the large-diameter river-crossing shield-bored tunnel.In the end,the distributions of soil conditions,fractures and potential karst cave are predicted.
Tests have been made on the field applicability of 4 geological prediction technologies,including high density resistivity technology,high frequency magnetotelluric technology,seismic reflection wave technology and transient electromagnetic technology.According to the testing results,the former 3 technologies are adopted to predict the geological conditions of the large-diameter river-crossing shield-bored tunnel.In the end,the distributions of soil conditions,fractures and potential karst cave are predicted.
引文
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[4]祝杰,杜毅,亢会明,等.高密度电法在水域工程勘察中的应用[J].工程勘察,2011(10):80-83.(ZHU Jie,DUYi,KANG Huiming,et al.Research on the application of a-quatic multi-electrode electric method in the geological sur-vey project[J].Geotechnical Investigation&Surveying,2011(10):80-83.(in Chinese))
[5]王军,何淼.浅埋隧道超前地质预报方案对比研究[J].现代交通技术,2010(4):67-70.(WANG Jun,HE Mi-ao.Contrast research on the scheme of geological predictionahead tunnel face for the shallow buried tunnel[J].ModernTransportation Technology,2010(4):67-70.(in Chi-nese))
[6]郭秀军,王兴泰.用高密度电阻率法进行空洞探测的几个问题[J].物探与化探,2001(4):306-311,315.(GUOXiujun,WANG Xingtai.Some problems in the application ofhigh density resistivity method to cavity exploration[J].Geo-physical and Geochemical Exploration,2001(4):306-311,315.(in Chinese))
[7]何正勤,陈宇坤,叶太兰,等.浅层地震勘探在沿海地区隐伏断层探测中的应用[J].地震地质,2007(2):363-372.(HE Zhengqin,CHEN Yukun,YE Tailan,et al.Appli-cation of shallow seismic exploration in detection of buriedfault in coastal areas[J].Seismology and Geology,2007(2):363-372.(in Chinese))
[8]葛双成,梁国钱,陈夷,等.探地雷达和高密度电阻率法在坝体渗漏探测中的应用[J].水利水电科技进展,2005(5):59-61.(GE Shuangcheng,LIANG Guoqian,CHENYi,et al.Application of GPR and high-density resistivitymethod to leakage detection of dam bodies[J].Advances InScience and Technology of Water Resources,2005(5):59-61.(in Chinese))
[9]刘宏岳.水域浅层地震反射波勘探数据处理及工程实例[J].福建建设科技,2008(2):28,33.(LIU Hongyue.Shallow marine seismic reflection data processing and itsgeotechnical application[J].Fujian Construction Science&Technology,2008(2):28,33.(in Chinese))
[10]刘宏岳,林朝旭,林孝城,等.综合物探方法在某过江隧道工程勘察中的应用研究[J].隧道建设,2012,32(3):275-280,301.(LIU Hongyue,LIN Chaoxu,LINXiaocheng,et al.Application of comprehensive geophysicalprospecting method in exploration of river-crossing tunnel[J].Tunnel Construction,2012,32(3):275-280,301.(in Chinese))
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