摘要
依据九龙矿15423N工作面所进行的大量而细致的水文地质工作,研究剖析了该矿和15423N工作面的水文地质条件,分析认为该面底板下发育的隐伏微型强导水陷落柱、使奥灰含水层作用在该面煤层底板隔水层的距离缩短了68.5 m,该面煤层底板承受奥灰含水层和大青含水层水压高,剩余隔水层底板强度不足于抵挡奥灰含水层的高水压、陷落柱的隐伏性和其横向扩展范围以及横向水力联系的局限性和受当时探测技术水平的限制,是导致该面采空区滞后底板突水的主要原因,对处于封闭滞流条件下奥灰含水层水文地质条件认识的不足和偏差,是导致突水的另一个重要原因。
Based on a lot of detailed hydrogeological work in working face 15423N in Jiulong Coal Mine,it studied the hydrogeological conditions of this mine and working face 15423N.It studied and obtained that the small concealed collapsed column under this face floor,which shortened the distance between the Ordovician aquifer and this face coal seam floor impermeable layer by 68.5 m.The water pressure of this face coal seam floor in the Ordovician aquifer and Daqing aquifer was high,the strength of remaining impermeable layer floor was insufficient,and it could not stand the high pressure of Ordovician aquifer.Collapse column insidious,scale-range and horizontal hydraulic connection limitations were the major causes of the goaf lag floor water-inrush.It was another cause of the floor water-inrush that the deficiencies and deviations of hydrogeological understanding for Ordovician aquifer under closed stagnation conditions.
出处
《煤矿安全》
CAS
北大核心
2013年第8期187-190,共4页
Safety in Coal Mines
