英德城南地面塌陷区地下水示踪试验研究  

Study on groundwater tracer test in Chengnan surface subsidence area of England and Germany

作　　者：姚宜娟 王恒[1,2] YAO Yi-juan;WANG Heng(Collaborative Innovation Center for Water Pollution Control and Water Safety in Karst Area,Guilin University of Technology,Guilin 541004,China;Chemical Industry Geological Prospecting Institute of Guangdong Province,Guangzhou 510800,China)

机构地区：[1]桂林理工大学岩溶地区水污染控制与用水安全保障协同创新中心,广西桂林541004 [2]广东省化工地质勘查院,广东广州510800

出　　处：《地下水》2024年第6期6-10,共5页Ground water

基　　金：英德市英城街道城南地面塌陷地质灾害应急勘查项目([粤化地勘灾]2020-050)。

摘　　要：岩溶管道结构特征对岩溶地面塌陷的产生具有重要影响。本文通过在广东省英德市城南社区岩溶地面塌陷区开展示踪试验,根据示踪剂浓度曲线形态,分析岩溶管道发育特征,确定地下水流向及与地面塌陷的关系。结果表明:研究区地下岩溶管道以多支、混合型为主;研究区地下水系统划分为三个汇水带;研究区岩溶地面塌陷主要分布在汇水带Ⅰ内,该区地下岩溶管道发育规模较大且地下水流度较快,有利于地下水搬运、侵蚀土体,容易形成土洞。The structural characteristics of karst pipes have an important influence on the generation of karst ground collapse.This paper carries out a tracer test in the karst land collapse area of Chengnan Community, Yingde City, Guangdong Province, analyzes the development characteristics of karst pipes and determines the direction of groundwater flow and its relationship with land collapse according to the tracer concentration curve pattern. The results show that: the underground karst pipes in the study area are mainly multi-branched and mixed;the groundwater system in the study area is divided into three catchment zones;the karst land subsidence in the study area is mainly distributed in catchment zone Ⅰ, and the development of underground karst pipes in this area is large in scale and the groundwater flow is fast, which is conducive to the transportation of groundwater, erosion of soil, and the formation of earth holes easily.

关 键 词：岩溶地面塌陷 示踪试验 岩溶管道 岩溶发育 

分 类 号：P642.26[天文地球—工程地质学] P641.2[天文地球—地质矿产勘探]