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为了分析高阳矿9-11#煤层带压开采的安全性,依据水文地质勘探成果,对奥陶系峰峰组和上马家沟组用运抽水试验、流量测井试验和水化学分析实验进行了研究。研究表明峰峰组含水层岩溶裂隙不发育,富水性差,矿化度高;上马家沟组含水层富水性较好,矿化度低;且二者水化学成分差异显著,二者不存在水力联系。峰峰组上部岩溶裂隙不发育且被充填,组成平均厚约17.5 m的隔水层。突水系数分析表明,井田内突水系数小于0.1 MPa/m,大部分区域突水系数小于0.06 MPa/m,具备带压开采条件。但井田中部突水系数大于0.06 MPa/m,且断裂较发育,属突水危险区,应采取措施预防突水灾害发生。
In order to analyze the safety of coal seam 9-11 # seam in Gaoyang Mine, according to the results of hydrogeological exploration, the Ordovician Fengfeng Formation and Shangmajiagou Formation were tested by using pumping test, flow logging test and water chemical analysis experiment the study. The study shows that the karst fissures of the Feng-feng aquifer are not developed, with poor water-richness and high salinity. The aquifer of the Shangmajiagou Formation is rich in water and has a low degree of mineralization, and there is a significant difference between the two chemical compositions Hydraulic connection. The upper karst fissures in Fengfeng Formation are underdeveloped and filled, forming an aquitard with an average thickness of about 17.5 m. Water inrush coefficient analysis shows that the inland water inrush coefficient is less than 0.1 MPa / m, most of the water inrush coefficient is less than 0.06 MPa / m, with pressure mining conditions. However, the water inrush coefficient in central Ida is more than 0.06 MPa / m, and the faults are more developed and belong to the water inrush danger zone. Measures should be taken to prevent the occurrence of water inrush hazards.