Characteristic of water chemistry and hydrodynamics of deep karst and its influence on deep coal miningA case study in Dongtan Coal Mine, Shandong, China

被引:0
|
作者
Wei Qiao
Wenping Li
Xin Zhang
机构
[1] China University of Mining and Technology,School of Resources and Earth Science
[2] Yankuang Group,Postdoctoral Workstation
来源
Arabian Journal of Geosciences | 2014年 / 7卷
关键词
Deep mining; Deep karst; Water chemistry; Hydrodynamics; Water abundance;
D O I
暂无
中图分类号
学科分类号
摘要
The mining depth of main coal mines could reach around 600 m in eastern North China, and extends to the dept with speed of around 12 m/a. As the basement of eastern North China-type coal mine, the Ordovician karst aquifer is the main water source that influences the carboniferous coal seam mining. As the deep karst water has large buried depth and high water pressure (8–12 MPa), with10–30 m space between high pressure aquifer and coal seam, the geological area of deep coal occurrence is often forbidden for mining. Environmental damage, to a greater or lesser degree, is caused by coal mining. On the basis of analyzing the hydrogeological conditions of mining areas, this paper introduces the hydrogeological survey work of ultra-high confined karst water deep in the coal seam floor within researched region for preventing and controlling water disaster of the mine. After researching into the hydrogeological investigation data in the researched region, we explored the hydrodynamic and water chemical characteristics of deep karst water by using pumping test, dynamic observation, and dewatering test. Finally, this study suggests that the hydraulic pressure of deep mining could be mined, on the circumstances that reasonable and effective of water prevention measures are taken based on a detailed survey on water abundance of deep karst.
引用
收藏
页码:1261 / 1275
页数:14
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