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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。
In order to solve the potential problem of water inrush from adjacent gob in the mining area of Jining No.2 coal mine, based on the geological and hydrogeological conditions in the mining area, the theoretical calculation and numerical simulation are used to calculate the depth of the damaged coal seams in coal mining. And process simulation analysis. On this basis, combined with the empirical formula in the specification, the comprehensive analysis and appraisal of the stability of the coal pillar with intervals in the ten mining areas and the adjacent eleven mining areas is carried out. The results show that the size of coal pillar in coal mining interval is slightly smaller than the critical value of safety water blocking coal pillar according to the regulation of coal mine prevention and treatment, Eleven mining areas to control the implementation of pressure drainage, control of water pressure is not greater than 0.4 MPa. The research results provide the basis for the prevention and control of water damage in the old mining area in the tenth mining area.