摘要
以淮南西部矿区为例,介绍了该地区自20世纪60年代开采煤矿以来,由于疏降地下水,引起的地面塌陷。为了研究灰岩水动力场规律,先后在该区进行多时段、多水平放水试验。研究表明,覆盖粘土层、岩溶及人工疏降地下水,是该地区岩溶塌陷形成的基本条件。通过对粘土盖层性质、疏降地下水岩溶塌陷演化过程及塌陷机理与对应阶段过程综合分析,结合区域地质条件,掌握了塌陷点的分布规律。对目前西部地区塌陷"复活"、整治及未来城市规划,提出了建设性建议。
Taking western mining area of Huainan for an example,this paper discusses the land collapse of this area because of pumping groundwater since the coal mine was exploited in 1960s.In order to make research on the characteristics of karst aquifer hydraulics,the pumping test under the mine was done in different stage at different level.The research shows that the induced factors of karst collapse are the clay cap beds,the karst cave and the pumping of the groundwater in the area.Based on the integrative analyses of the characteristics of the clay beds,the evolutive process of karst collapse caused by the pumping groundwater,the mechanism of the collapse and the regional geological condition,the distributive rule of the karst collapse is well known.Finally,some constructive suggestions are given about the prevention of the collapse 'revival'of the western area and the town scheme.
出处
《中国地质灾害与防治学报》
CSCD
2004年第4期64-68,共5页
The Chinese Journal of Geological Hazard and Control
基金
安徽省高等学校中青年骨干教师人才基金
安徽省教育厅基金资助项目(2001kj214)
关键词
疏降地下水
岩溶塌陷
粘土
盖层
形成机理
淮南煤矿
pumping groundwater
karst collapse
clay
overlay beds
forming mechanism
Huainan Coal Mine
