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

作　　者：吴淑莹 张浔浔 谢小国 罗兵 杨斌 赵阳刚[3,4] WU Shuying;ZHANG Xunxun;XIE Xiaoguo;LUO Bing;YANG Bin;ZHAO Yanggang(Sichuan Hua Di Building Engineering Co.Ltd.,Chengdu Sichuan 610081,China;Sichuan Geological Environment Survey and Research Center,Chengdu Sichuan 610081,China;Field Scientific Observation and Research Station of Natural Resources in the Middle Reaches of the Brahmaputra River,Nyingchi Tibet,860000,China;Civil-Military Integration Center of China Geological Survey Center,Chengdu Sichuan 610036,China;Key Laboratory of Coupling Process and Effect of Natural Resources Elements,Beijing 100055,China)

机构地区：[1]四川省华地建设工程有限责任公司,四川成都610081 [2]四川省地质环境调查研究中心,四川成都610081 [3]雅鲁藏布江中游自然资源西藏自治区野外科学观测研究站,西藏林芝860000 [4]中国地质调查局军民融合地质调查中心,四川成都610036 [5]自然资源要素耦合过程与效应重点实验室,北京100055

出　　处：《中国地质调查》2025年第1期129-139,共11页Geological Survey of China

基　　金：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。

摘　　要：成都市由于其特殊的地下砂卵砾石层结构和地下空间的大规模开发利用,地下病害体引起的道路塌陷灾害屡有发生。采用探地雷达法开展成都市中部地区市政排水管道两侧空洞和脱空等病害探测工作,探讨了空洞和脱空病害分布规律,及其与地铁盾构施工的关系。探明研究区空洞和脱空共计811处,空洞平均净空和平均体积分别为0.41 m和1.86 m^(3),脱空平均净空和平均体积分别为0.12 m和0.52 m^(3),二者风险等级基本评定为Ⅳ级和Ⅲ级。6条地铁线路附近探明空洞和脱空170处,集中分布在3号线地铁周边。区内病害体整体分布密度为0.72处/km,过地铁道路病害体分布密度为1.07处/km,不过地铁道路病害体分布密度为0.66处/km。病害体集中分布于研究区南部和松散堆积砂砾卵石层孔隙潜水区,亦是地铁交通线路密集区域,河流水系对浅部病害体形成影响不大,表明在砂卵砾石层的特殊环境下,地铁盾构施工在一定程度上诱发了地下病害体的形成。研究成果可为城市地下病害体的监测、预警和治理提供依据。Due to the unique underground sand and gravel layer structure and large-scale development and utilization of underground space,road collapse disasters caused by underground disease bodies have occurred frequently 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 cavity being 0.41 m and 1.86 m^(3),and the average clearance and volume of the void being 0.12 m and 0.52 m^(3).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 subway 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 accumulated sand gravel layer,which is also the area with dense subway traffic lines.The river system has little impact on the formation of shallow disease bodies,indicating that the subway shield construction induces the formation of underground disease bodies to a certain extent,under the special environment of sand gravel layer.The research 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 

分 类 号：P631[天文地球—地质矿产勘探]