论文部分内容阅读
基于采掘生产资料、钻孔资料、实验测试数据,对开平向斜南东翼矿井瓦斯生成、赋存、涌出、异常等特征展开研究,并分别从地质构造、水文地质、煤层埋深、煤厚及顶底板特征方面分析了瓦斯赋存及异常的地质控制因素。研究表明:研究区自林西矿往吕家坨矿和钱家营矿方向瓦斯含量、瓦斯压力及绝对瓦斯涌出量均呈现逐渐增大趋势;开放性正断层发育及地下水的携带逸散导致研究区瓦斯含量整体较低;不稳定的厚煤层、良好的顶底板封盖条件及发育的小型断层是研究区瓦斯异常的主控因素,这些特征为瓦斯提供了充足的赋存空间和良好的保存条件,有利于瓦斯大量聚集形成局部高压瓦斯区,从而易受采掘扰动影响引起瓦斯异常。
Based on mining production data, drilling data and experimental test data, the gas production, occurrence, emission and anomaly in the south east wing of the Kaiping syncline are studied. According to the geological structure, hydrogeology, coal seam depth, In the aspect of thick and top floor characteristics, the gas occurrence and abnormal geological control factors are analyzed. The results show that the gas content, gas pressure and absolute gas emission from the Linxi ore to the Lujiatuo ore deposit and the Qianjiaying ore deposit in the study area all show an increasing trend; the development of open normal faults and the carry-out of groundwater The gas content in the study area is generally low. Unstable thick coal seam, good roof and floor sealing conditions and the development of small faults are the main controlling factors of gas anomalies in the study area. These features provide enough space for gas storage and good Preservation conditions are conducive to a large number of gas gathering to form a partial high-pressure gas zone, which is susceptible to mining disturbance caused by gas anomalies.