摘要
涟源市属中低山-丘陵地形,区内碳酸盐岩分布面积广,岩溶发育。由于受采煤活动影响,诱发地面岩溶塌陷48处,造成重大经济损失。岩溶塌陷多分布于岩溶采煤区,发生原因主要是矿坑突水、抽排地下水,使地下水位大幅变动,上覆岩土体失去浮托而产生塌陷。
The geomorphology of Lianyuan city belongs to low-middle mountain and hill. Most of the area are covered by carbonates rock. 48 places karst collapse have taken place because of coal mining and karst growth etc., and brought a vast economic losses. Most karst collapse are distributed in mining place. The main factors are mine water gushing and groundwater drainage, inducing ground water level a wide margin change, making upper rock and soil mass lose floating and supporting to produce collapse.
出处
《中国地质灾害与防治学报》
CSCD
2007年第2期122-126,共5页
The Chinese Journal of Geological Hazard and Control
基金
中国地质调查局水[2004]014-07项目(200412300014)
关键词
地质灾害
岩溶塌陷
特征分析
湖南涟源市
岩溶采煤区
geological hazard
karst collapse
characteristics analysis
Lianyuan City of Hunan Province
karst mining coal area
