济宁二号煤矿十采区隔水煤柱安全性评价

发布时间：2018-06-03 02:49

本文选题：采空区 + 隔水煤柱　；参考：《煤炭技术》2017年04期

【摘要】：为了解决济宁二号煤矿十采区开采邻近采空区积水突水隐患问题,基于采区地质、水文地质条件,采用理论计算和数值模拟方法对煤层开采隔水煤柱破坏深度进行了理论计算和过程模拟分析,在此基础上,结合规范中经验公式对十采区与邻近十一采区间隔水煤柱稳定性进行综合分析评价。研究结果表明:按《煤矿防治水规定》采区间隔水煤柱尺寸略小于安全隔水煤柱临界值,存在发生十一采区老空水涌突的可能性,必须在十采区开采前对十一采区积水实施控压疏放,控制水压不大于0.4 MPa。该研究成果为十采区开采老空区水害防治提供了基础依据。
[Abstract]:In order to solve the potential problem of water inrush in mining adjacent goaf in No. 2 coal mine of Jining coal mine, based on the geological and hydrogeological conditions of the mining area, Based on the theoretical calculation and numerical simulation method, the failure depth of coal pillar in coal seams is calculated and analyzed. Combined with the empirical formula in the code, the stability of the coal pillar between the ten mining areas and the adjacent eleven mining areas is comprehensively analyzed and evaluated. The results show that the size of the coal pillar in the interval of mining area is slightly smaller than the critical value of the safe water-insulated coal pillar according to the regulation of coal mine water prevention and control, and there is the possibility that the old empty water surge will occur in the undecked mining area. It is necessary to control water pressure and discharge before mining in ten mining areas, and the controlled water pressure is not more than 0.4 MPA. The research results provide the basis for the prevention and control of water hazards in the old goaf in ten mining areas.
【作者单位】：中国矿业大学资源与地球科学学院;
【基金】：国家自然科学基金重点项目(41430643)
【分类号】：TD745

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