【作者】 肖拥军； 刘新华；

【Author】 XIAO Yong-jun~1,2 LIU Xin-hua~1 (1.Faculty of Engineering,China University of Geosciences,Wuhan 430074,China;2.Faculty of Civil Engineering,Hunan University of Science and Technology,Xiangtan 411201,China)

【机构】 中国地质大学工程学院； 湖南科技大学土木工程学院；

【摘要】 湘中地区分布许多含煤向斜盆地,煤田开采过程中由于突水及疏排地下水引起岩溶塌陷,产生了一系列环境地质问题。斗笠山矿区为一不规则的三角形复式向斜汇水盆地,水文地质条件复杂,本区构成了五个塌陷带。文章对五个塌陷带的地质构造进行了研究,早二叠世未期的东吴运动,在区内对古岩溶的控制十分明显。地质构造复杂地段,往往是岩溶异常发育地带。斗笠山向斜西南翼处于斗笠山向斜转折端,岩溶塌陷发育,斗笠山煤矿泉塘一带,既是多条断裂交汇处,又是次级背斜轴部和倾伏端,密集的构造使岩层破碎和裂隙发育,岩溶塌陷发育强烈。更多还原

【Abstract】 There are developed many coal-bearing synclinal basins in the center of Hunan Province,during the exploitation of thecoalfield,karst collapse was caused by water bursting and drainage,arousing a series of environmentally geological problems.The Doulishan coal-mining district is an irregular triangle compound synclinal basin with a complex hydrogeologic setting.There are five karst collapse belts in the coal-mining district.The paper studies the geological structures of these five karst col-lapse belts.The Dongwu movement controlled the development of paleokarst.Karst development anomalies occur usually in theareas with complex geologic structures. The southwest limb of the Doulishan syncline is situated at the turning point of theDoulishan syncline and karst collapse is developed there.Quantang unit in the Doulishan coal mining district is not only the lo-cation of convergence of many faults,but also the axial region and plunging end,close-spaced structures led to rock fragmenta-tion and fracture development,so karst collapses are developed intensively there.更多还原