摘要
岩溶陷落柱是华北石炭二叠煤系中发育的一种特殊地质构造,以其隐蔽性和突发性对煤矿安全生产造成严重威胁。长期以来,开滦范各庄矿深受陷落柱水害威胁,其中1984年范各庄煤矿陷落柱出水淹井造成重大经济损失和人员伤亡。通过范各庄矿井地质资料、水文地质类型划分报告,以及对已发现的陷落柱资料进行分析,在前人理论基础上对范各庄矿陷落柱形成条件总结,认为该区在总体走向为北东向的开平复式向斜构造背景控制下,在奥灰岩溶发育,地下水不断交替,岩体自重应力和真空负压动力及地质构造条件下形成陷落柱。
Paleo - sinkholes is a special geological structure in north of China iia period of Carboniferous and Permian, its hidden and unexpected characteristics was seriously threaten to the coal mine production safety. For a long time, the mine of Fangezhuang threatened by the collapse columns water, Fangezhuang flooded coal mine collapse column out well cause signifi- cant economic losses and casualties in 1984 among these cases. That FangezhUatlg mine geological data, hydrogeological re- port by type, as well as information on Paleo - sinkholes has been found, concluding theoretical Fangezhuang mine collapse in eastern pillar formation conditions on the basis of previous summary, think that under control the overall trend for the area north - east of Kaiping syncline duplex structure, in Ordovician limestone karst groundwater constantly alternating rock gravity stress and under vacuum conditions to form dynamic and tectonic Paleo - sinkholes.
出处
《地下水》
2016年第5期171-172,共2页
Ground water
关键词
地质构造
奥陶灰岩
地下水
岩溶陷落柱
Regional structure
ordovician limestone
groundwater and Paleo - sinkholes
