潜蚀作用导致岩溶塌陷地质灾害的实例分析  

A case study of the geological hazard of karst land collapse caused by groundwater corroding

作　　者：杜正民 吴光明[1] 洪亮[2] 

机构地区：[1]浙江省第一地质大队,杭州310012 [2]浙江工业大学,杭州310014

出　　处：《水文地质工程地质》2007年第3期89-92,共4页Hydrogeology & Engineering Geology

摘　　要：淳安县某村于2005年2月初发生民房墙体开裂、地面裂缝、砼路面层与路基脱开、施工缝拉裂等地质灾害现象。从破坏特征看,该灾害应属于地面沉降,但却不具备发育通常概念“地面沉降”的地质环境条件。文章根据灾害区附近灰岩溶洞较发育、表部松散层厚度较大等条件,认为灾害由地下水潜蚀作用引起,并试图恢复其作用机制。指出如不加以治理,可能造成灾难。Geological disasters such as house crevice, earth crevice, concrete road surface off the roadbed, working slot riping, etc. occurred in a village of the Chunan county in early February, 2005. They seem to be caused by land subsidence for their surface characteristics but they are not so, because the geological and environmental conditions are not helpful for the occurrence of land subsidence. In view of the characteristics of karst aquifers and incompact dust thickness of land surface at the disaster areas, the geological hazards are thought to be caused by groundwater-corroding and should be repaired in time to avoid the possible disasters.

关 键 词：潜蚀作用 岩溶塌陷 

分 类 号：P642.26[天文地球—工程地质学]