地铁线路采空区微动剖面法探测研究——以广州地铁14号线二期为例  

Research on microtremor profile method to detection of goaf along subway line:a case study in the second phase of subway line 14

作　　者：姚金 徐佩芬[2,3,4] 凌甦群 张华 刘红兵 杜亚楠 游志伟 张敏 YAO Jin;XU PeiFen;LING SuQun;ZHANG Hua;LIU HongBing;DU YaNan;YOU ZhiWei;ZHANG Min(Guangzhou Metro Design and Research Institute Co.,Ltd.,Guangzhou 510010,China;Key Laboratory of Shale Gas and Geoengineering,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China;Innovation Academy of Earth Science,CAS,Beijing 100029,China;College of Earth and Planetary Sciences,University of Chinese Academy of Sciences,Beijing 100049,China;Beijing Zkgeo Energy and Environment Technology Co.,Ltd.,Beijing 100082,China;Xiongan Urban Planning and Design Institute Co.,Ltd.,Baoding 071700,China;Development Research Center for Natural Resource and Real Estate Assessment,Shenzhen 518034,China)

机构地区：[1]广州地铁设计研究院股份有限公司,广州510010 [2]中国科学院地质与地球物理研究所中国科学院页岩气与地质工程重点实验室,北京100029 [3]中国科学院地球科学研究院,北京100029 [4]中国科学院大学地球与行星科学学院,北京100049 [5]北京中科吉奥能源环境科技有限公司,北京100082 [6]雄安城市规划设计研究院有限公司,保定071700 [7]深圳市自然资源和不动产评估发展研究中心,深圳518034

出　　处：《地球物理学报》2023年第10期4279-4289,共11页Chinese Journal of Geophysics

基　　金：广州地铁设计研究院股份有限公司科研项目(KY2020-013);中国科学院重点部署项目(ZDRW-ZS-2021-3-1)联合资助。

摘　　要：煤层开采留下大范围采空区,可能引发地面沉降和塌陷,危害地面建筑物和地下设施安全,查明采空区的空间位置与结构形态,对矿区环境治理、土地资源开发利用和确保地铁、铁路等大工程建设地质安全具有重要意义.然而,采空区探测一直是公认的行业难题,尤其是当采空区位于城镇等复杂强干扰环境下,传统的采空区物探面临诸多挑战.本文采用微动剖面探测新方法研究广州地铁14号线二期乐嘉路站—岗贝站区间的煤层采空区,介绍在城区交通要道开展地铁线路采空区微动剖面法探测的方法技术.探测查明2#、4#煤层采空区、六处岩巷与二处竖井,与钻孔揭露情况和历史记载的煤矿开采水平巷道吻合,探测结果为地铁设计建设提供了可靠的物探依据和地质安全保障.Coal mining usually leaves a large range of goaf,which may cause severe land settlement and collapse,and endanger the safety of ground buildings and underground facilities.It is of great significance to identify and map the spatial location and structural form of goaf for environmental governance,land development and utilization,and to ensure the geological safety of large engineering construction such as subway and railway.However,detecting and mapping goaf is a well-known problem in the industry,especially when the goaf is located in complex urban area where traditional geophysical methods are often limited due to the strong interference.In this paper,we introduced and discussed the theory and its application of the microtremor profile imaging technique,based on the goaf survey project during the construction of the Guangzhou subway line 14.Two coal goaf areas,six rock lanes and two shafts were identified during the microtremor survey,which were confirmed by the borehole results and the historical record about the coal mining horizontal roadway.This study demonstrated that microtremor profiling technique can provide a reliable geophysical basis and geological safety guarantee for the design and construction of the subway.

关 键 词：微动剖面法探测 ESPAC法 煤层采空区 地铁勘察 广州地铁14号线 

分 类 号：P631[天文地球—地质矿产勘探]