摘要
焦作矿区属典型的华北型石炭二叠纪岩溶煤田，矿井水害严重．煤层底板之下的３层岩溶含水层是由孔隙介质和裂隙介质组成的双重结构含水体，是矿井主要充水水源．占主导地位的裂隙介质包括微裂隙、小裂隙、大裂隙和巨裂隙，不同规模的裂隙对岩溶水渗流起到不同作用．对巨型和大型裂隙网络建立非连续介质裂隙网络三维渗流模型，而对小裂隙和微裂隙连同孔隙建立连续介质的渗透张量模型，两类模型耦合成双重介质三维裂隙网络渗流模型，可以很好地刻画矿区岩溶水渗流和突水特征．
Jiaozuo coal mine is a typical North China coal field of Permo Carboniferous period, the water bursting occur frequently, and the three layers of karst fracture aquifer under the coal floor are the main source of the groundwater. Based on the component of karst fracture media and their different actions on karst fracture water flow, a new method to establish the model is put forward. The model includes a three dimensional discrete fracture network flow model to describe the dominant fracture network, and a porous media permeability tensor model to describe the minor fracture. The combination of the two models can describe the karst fracture water flow and water bursting properties more effectively.
出处
《煤炭学报》
EI
CAS
CSCD
北大核心
1998年第6期566-570,共5页
Journal of China Coal Society
关键词
裂隙网络
焦作矿区
岩溶
渗流
矿井突水
fracture network,three dimensional fracture water flow,Jiaozuo coal mine area
