摘要
岩溶地下水网络的发育程度取决于灰岩含水层的可溶性及区内构造的发育程度。焦作矿区太原组 L_8灰岩尽管厚度较薄,杂质含量较高但岩溶地下水网络仍较发育,成为引起煤矿突水的主要含水层。本文选择焦作矿区韩王—演马庄井田作为研究区,对井田内 L_8灰岩取样进行了薄片鉴定、化学成分分析和溶蚀试验,系统地分析了区内大量钻孔资料、煤矿底板突水资料、水位动态观测资料,总结了 L_8灰岩溶蚀特征、岩溶发育规律,从而使对 L_8灰岩的岩溶地下水网络有了全新的认识,它对整个华北地区矿区防治水具有指导意义。
Based on the thin section study,chemical composition analysis and corrosion test,this paper summarized the karstic corrosion properties and karstic network de- velopment laws of limestone L_8 in Hanwong-Yan Mazhuang mine area,and based on the systematic analyses of the information of drilled well,water invasion from floor,water level dynamic observation,it is held that the karstic network develop- ment extent is determined by composition of the limestion and tectonic development of the area.It will be of a certain significance in prevention and control of under- ground water of coal mines in the North of China.
关键词
煤田
灰岩
岩溶
发育规律
Limestone of Taiyuan formation
Karst of North China
Hydrogeology of coal mine
