中国地质调查2025，Vol.12Issue(1)：129-139,11.DOI:10.19388/j.zgdzdc.2024.168
成都市中部地区市政排水管道地下病害体探测
Detection of underground disease bodies in municipal drainage pipelines in the central region of Chengdu City
摘要
Abstract
Due to the unique underground sand and gravel layer structure and large-scale development and utili-zation of underground space,road collapse disasters caused by underground disease bodies have occurred fre-quently in Chengdu City.The ground penetrating radar method was used to detect underground cavities and voids on both sides of municipal drainage pipelines in the central region of Chengdu City.The distribution pattern of cavities and voids and their relationship with subway shield construction were discussed.The results show that a total of 811 cavities and voids were identified in the study area,with the average clearance and volume of the cavi-ty being 0.41 m and 1.86 m3,and the average clearance and volume of the void being 0.12 m and 0.52 m3.The risk levels of cavity and void were basically rated as level Ⅳ and level Ⅲ.One hundred and seventy cavities and voids were found near the subway line,concentrating on Subway Line 3.The overall distribution density of disease bodies in the area is 0.72 per km,the distribution density of the disease bodies passing through the sub-way lines is about 1.07 per km,and the distribution density of those not passing through the subway road is 0.66 per km.The disease bodies are mainly distributed in the southern part and the pore phreatic area with loose accu-mulated sand gravel layer,which is also the area with dense subway traffic lines.The river system has little im-pact on the formation of shallow disease bodies,indicating that the subway shield construction induces the forma-tion of underground disease bodies to a certain extent,under the special environment of sand gravel layer.The re-search results can provide basis for monitoring,early warning,and treatment of urban underground disease bodies.关键词
地下病害体/砂卵砾石层/探地雷达/地铁施工/成都市Key words
underground disease bodies/sand gravel layer/ground penetrating radar/metro construction/Cheng-du City分类
地质学引用本文复制引用
吴淑莹,张浔浔,谢小国,罗兵,杨斌,赵阳刚..成都市中部地区市政排水管道地下病害体探测[J].中国地质调查,2025,12(1):129-139,11.基金项目
中国地质调查局军民融合地质调查中心"青藏高寒区资源与环境调查监测与评价(编号:DD20220881)"项目资助. （编号:DD20220881）
