许疃井田古近系“红层”下煤层开采安全性研究

Study on Safety of Coal Seam Mining under Paleogene Redbed in Xutuan Coal Mine

基于各阶段水文地质勘探资料对古近系"红层"水文地质条件进行了综合评价,并重点对"红层"下33采区煤层开采安全性进行分析。研究结果表明,"红层"底部属较软弱、较完整、半固结、含水性与渗透性极弱(隔水层)的岩层;数值模拟结果与规程拟合结果基本一致,也符合规范防砂煤柱的要求。

Based on the hydrogeological prospecting data of each stage, comprehensively evaluates the hydrogeological conditions of the Paleogene redbed, and emphatically analyzes the safety of the coal seam mining in the 33 mining area under the Redbed. The results show that the bottom of the Redbed is weak, complete, semi consolidated, water-beating and permeable （water-bearing） rock strata; the numerical simulation results are basically consistent with the procedure fitting results and conform to the requirements of the standard sand-control pillar.