摘要
在分析区域地质特征的基础上,对西山煤田古交矿区陷落柱的数量、形态特征及分布规律进行了总结。从陷落柱的发育特征出发,对其导水条件进行了研究,认为本区岩溶陷落柱是否突水,关键取决于其是否有导水的力学薄弱通道。研究表明,本区岩溶陷落柱柱体胶结致密,后期活化程度弱,距煤层较近的峰峰组含水层的富水性弱,而煤层与上马家沟组强含水层之间隔水层厚度大,因而,在正常块段开采中,岩溶陷落柱作为集中导水通道导致重大突水的可能性较小。
Based on regional geological characteristic analysis,summed up subsided column number,morphological characters and distribution pattern in the Gujiao mine area,Xishan coalfield.Starting from development features of subsided column,analyzed water conducting conditions,reckoned that if the subsided column will cause water bursting in the area is decided by whether there is mechanically weak water conducting channel.The study has demonstrated that the column cylinders in the area are compactly cemented and weakly succeeding activated,aquifers in the Fengfeng Formation near coal seams have weak water yield property,while the interval between coal seams and upper Majiagou Formation strong aquifer is quite thick,thus,during normal block cut mining,the possibility of the karstic subsided column as mass water conducting channel causing major water bursting is on the small side.
出处
《中国煤炭地质》
2010年第4期40-44,共5页
Coal Geology of China
关键词
岩溶陷落柱
水文地质条件
导水性
薄弱通道
karstic subsided column
hydrogeological condition
water conductivity
mechanically weak channel
作者简介
李俊杰（1975-），男，山西静乐人，硕士，主要从事沉积学、煤田地质、古生物等方面研究。
