井下采空区储水复用防水密闭墙硐室安全评估

发布时间：2018-06-09 13:54

本文选题：储水复用 + 防水密闭墙　；参考：《煤矿安全》2015年10期

【摘要】：根据对井下采空区储水复用防水密闭墙硐室安全影响因素的分析,建立了以墙体自身强度、围岩强度、防水煤柱宽度、采空区水体性质和水压大小作为评估单元的定性和定量相结合的安全评估程序。在分析平板式防水密闭墙承压强度计算不宜采用圆柱形、楔形和倒截锥形防水闸门承压强度计算公式的基础上,构建了平板式防水密闭墙承压强度计算的物理模型和数学模型。根据李家壕煤矿防水密闭墙工程实际参数,定量计算了墙体硐室可承受的安全水头高度和所需的安全防水煤柱宽度,结合定性评估结果,校核李家壕煤矿防水密闭墙硐室安全性能满足井下采空区储水复用的要求。
[Abstract]:According to the analysis of the influence factors on the safety of the waterproofing and closed wall chamber in the underground goaf, the safety assessment process is established, which combines the strength of the wall, the strength of the surrounding rock, the width of the waterproof coal pillar, the nature of the water body of the goaf and the size of water pressure as the qualitative and quantitative evaluation unit of the evaluation unit. On the basis of the calculation formula of the pressure strength of the cylindrical, wedge-shaped and inverted truncated waterproofing gate, a physical model and a mathematical model for the calculation of the pressure strength of the plate type waterproof closed wall are constructed. According to the actual parameters of the waterproof closed wall engineering in the Lijia coal mine, the safety head height and the requirement of the wall chamber can be calculated. The safety and waterproof pillar width is combined with the qualitative evaluation results to check the safety performance of the waterproof closed wall chamber in Lijia Hao coal mine to meet the requirement of water storage in underground goaf.
【作者单位】：中煤科工集团西安研究院有限公司;
【基金】：“十二五”国家科技支撑计划课题资助项目(2012BAC10B03) 国家自然科学基金青年科学基金资助项目(41302214,41402220)
【分类号】：TD745.23

【参考文献】