Risk Control of Karst in
详细信息
- 责任者：Lei Xiaodong (Beijing Institute of Geo-Exploration and Technology ; Beijing 102218 ; China) ; Yao Chunmei
- 刊名：Earth Science Frontiers
- 出版年：2010
- 卷期：17(6)
- 关键词：岩溶塌陷 ; karst collapse ; 危险评估 ; risk assessment ; 山东 ; Shandong Province
- 页码：p.271-277
- 图表：7 illus., 5 tables, 10 refs.
- 分类号：1800
- issnNo：ISSN1005-2321
- isbnNo：CN11-3370/P
摘要
///By analyzing the relationship between karst collapse and groundwater in Linyi urban area, the key factor leading to karst collapse is determined, i.e. the groundwater level, and the method of controlling the risk of karst collapse is given according to the groundwater numeric model established. In order to control the risk of karst collapse, the water level of karst aquifer should not be lower than the controlled groundwater level. On this account, the trend of dynamic change of groundwater is calculated by the numeric model with three groundwater pumping schemes in the principle of that the forecasted head of selected control point is above the control head, and then the reasonable pumping scheme is determined eventually. The quantity of karst pumping of urban area is expected to reduce 11.65×104 m3/d in the future, at the same time, this part of water demand will be supplied by reservoir of Linyi City. The risk of karst collapse of Linyi urban area should be decreased to a certain degree if the scheme is to be carried out.