摘要
总结广州地铁2,3,8号线延长段,5,6,9号线和广佛线的溶、土洞勘察经验,研究岩溶区地铁暗挖区间的溶、土洞勘察对策,结果表明岩溶区地铁暗挖区间溶、土洞勘察的范围划定为平面上扩展到隧道轮廓线外3.5m范围,竖向上扩展到结构底板以下10m范围,以查明该范围内的溶、土洞发育情况。勘察可应用跨孔超高密度电法和跨孔地震CT法;在场地条件允许的情况下,可利用地表超高密度电法进行地质普查。
Taking Guangzhou metro as an example, the investigation countermeasure (including investigation scale and scheme) for caves of mined metro tunnel at karst area is studied by summarizing the cave exploration experience of Guangzhou metro line 2, 3, 8 extension, 5, 6, 9 and Guangfd line. The study shows the scale of cave exploration of mined metro tunnel is defined as: the horizontal direction is extended to 3~5m outside the tunnel contour line, and the vertical direction is extended to 10m below the structural floor, and the development of cave in this area should be fined out;the cross-hole high density resistivity method and the cross-hole seismic CT method can be applied in cave exploration;the geological survey is conducted by using surface high density electrical method on site condition permitting.
作者
陈晓丹
翟利华
史海欧
王一兆
陈俊生
陈家航
CHEN Xiao-dan;ZHAI Li-hua;SHI Hai-ou;WANG Yi-zhao;CHEN Jun-sheng;CHEN Jia-hang(Guangzhou Metro Design & Research Institute Co., Ltd., 510010, Guangzhou, China;School of Civil Engineering and Transportation,South China University of Technology, 510640, Guangzhou, China;State Key Laboratory of Subtropical Building Science, South ChinaUniversity of Technology, 510640, Guangzhou, China)
出处
《建筑技术》
2019年第5期545-548,共4页
Architecture Technology
基金
亚热带建筑科学国家重点实验室自主研究课题(2015ZC20)
中央高校基本科研业务费资助项目(2017MS014)
关键词
岩溶
地铁
暗挖区间
溶(土)洞
勘察对策
karst
metro
mined tunnel
karst (soil) caves
investigation countermeasure
