摘要
通过对张家峁煤矿充水水源、充水通道、充水强度等水文地质特征进行分析,确定了上覆基岩裂隙承压水和延安组砂岩裂隙水为主要充水水源,采煤导水裂缝带为主要突水通道。基于对各煤层采煤裂缝带高度值计算结果,对各煤层顶板冒裂安全性进行分区预测,结果表明,3号煤层大部分为冒裂不安全区,4号、5号煤层开采区域全部为冒裂不安全区。
By analyzing the hydrogeological characteristics of water-filling sources,water-filling channels,and water-filling intensity in the Zhangjiamao Mine,it was determined that the overlying bedrock fracture bearing water and sandstone fracture water of Yan’an group were the main water-filling sources,and the coal mining guide fracture zone was the main protruding water channel.Based on the calculation results of the height value of the coal mining crack zone of each coal seam,the partition prediction of the safety of the top plate emergence crack of each coal seam was made,and the results showed that most of No.3 coal seam was the crack unsafe region,and the mining areas of No.4 and No.5 coal seam were all the crack unsafe region.
作者
高小青
Gao Xiaoqing(Hebei Coal Science Research Institute,Xingtai 054000,China)
出处
《煤炭与化工》
CAS
2020年第6期69-71,共3页
Coal and Chemical Industry
关键词
水文地质特征
裂缝带
安全性预测
防治水
hydrogeological characteristics
fracture zone
safety prediction
water control
