Distribution Features and Forming Conditions of the Mashankou Karst Collapse in Huaining County, Anqing City
详细信息
- 责任者：Pan Guolin (School of Resources and Environmental Engineering ; Hefei University of Technology ; Hefei 230000 ; China) ; Fang Tao
- 刊名：Carsologica Sinica
- 出版年：2013
- 卷期：32(2)
- 关键词：岩溶塌陷 ; karst collapse ; 地质灾害 ; geologic hazards ; 安徽 ; Anhui Province
- 页码：p.175-181
- 图表：5 illus., 20 refs.
- 分类号：1400
- issnNo：ISSN1001-4810
- isbnNo：CN45-1157/P
摘要
The Mashankou karst collapse in Huaining Ｃounty is a large-scale geological hazards site in Anhui Province.On the basis of systematic analysis on geological environment and space-time distribution in this area,the formation mechanism and distribution characteristics of the Mashankou karst collapse are summarized as follows:1) the Mashankou karst collapse is formed in 1987 and enters the outbreak period during 1988～1992 when 39 collapse pits,account for 43.8 % of the total collapse; and 2) geomorphologically speaking,the collapse pits are mainly distribute in the low-lying floodplain,then in the low hill slope.Lithologically,collapse pits are mainly distributed in T1n,T2y1 and T2y3.The necessary conditions which cause the Mashankou karst collapse include soluble stratum,thin debris cover and frequent fluctuation of the groundwater table.And among them,dramatic change in groundwater dynamic field caused by mine dewatering is the major cause of the karst collapse.
© 2004-2018 中国地质图书馆版权所有 京ICP备05064691号 京公网安备11010802017129号 地址：北京市海淀区学院路29号 邮编：100083 电话：办公室：(+86 10)66554848；文献借阅、咨询服务、科技查新：66554700 |