重庆鱼田堡煤矿采动条件下顶板岩溶地下水运移规律探讨

发布时间：2018-03-19 03:32

本文选题：岩溶　切入点：煤矿　出处：《中国岩溶》2017年01期 　论文类型：期刊论文

【摘要】：重庆市位于我国西南地区,五大国有煤矿多位于岩溶发育的丘陵山区,地质条件复杂,为深入探讨重庆丘陵山区采煤条件下地下水的运移规律,在鱼田堡煤矿煤层顶板长兴段灰岩地表投放示踪剂,井下不同巷道水平以及不同采区布置多个接收点实施连通试验。实验结果表明:接收点水样在雨后呈现出Cl~-含量升高、Cl~-含量降低和Cl~-含量不变3种变化趋势,综合连通试验结果及水化学分析得出顶板长兴段灰岩地下水在侵蚀基准面以下向开采工作面排泄,而开采结束覆岩相对稳定的采区基本无长兴段灰岩地下水排泄。研究不同采区的接收点示踪剂变化特征对深入了解地下水的运移规律,以及类似条件矿区布置防治水工作具有参考价值。
[Abstract]:Chongqing is located in the southwest of China, and the five state-owned coal mines are mostly located in the karst hilly areas. The geological conditions are complex. In order to probe into the law of groundwater migration under the conditions of coal mining in Chongqing hilly areas, Putting tracer on the limestone surface of Changxing section of coal seam in Yutianbao coal mine, Several receiving points are arranged in different roadway levels and different mining areas to carry out the connection test. The experimental results show that the water samples of the receiving points show three trends: the increase of Cl-content and the decrease of Cl-content and the invariance of Cl-content after the rain. Comprehensive connection test results and hydrochemical analysis show that the limestone groundwater in the Changxing section of roof is drained below the erosion datum to the mining face. However, in the mining area where the overburden is relatively stable at the end of mining, there is basically no discharge of limestone groundwater in Changxing formation. To study the characteristics of tracer variation at different receiving points in different mining areas, we can deeply understand the law of groundwater migration. And similar conditions of mining area layout prevention and control of water work has reference value.
【作者单位】：重庆地质矿产研究院/重庆市地质灾害自动化监测工程技术研究中心;重庆地质矿产研究院/外生成矿与矿山环境重庆市重点实验室;长江岩土工程总公司;
【基金】：重庆市国土资源和房屋管理局2014年科技计划项目资助(CAGT-KJ-2014019,CQGT-KJ-2014046) 国土资源部公益性行业专项资助(201411083-6);国土资源部野外科技观测研究基地矿山地质环境-重庆南桐野外基地
【分类号】：TD74;P641.461

【相似文献】