近直立煤层采动裂隙渗流及动态涌水量预测研究  

Prediction of fracture seepage and dynamic water inrush in near vertical coal seams

作　　者：孟庄涵 刘小平 王玉涛 田延哲 赵一燕 MENG Zhuanghan;LIU Xiaoping;WANG Yutao;TIAN Yanzhe;ZHAO Yiyan(CCTEG Ecological Environment Technology Co.,Ltd.,Beijing 100013,China;School of Civil Engineering and Architecture,Xi’an University of Technology,Xi’an 710048,China)

机构地区：[1]中煤科工生态环境科技有限公司,北京100013 [2]西安理工大学土木建筑工程学院,陕西西安710048

出　　处：《煤炭工程》2024年第11期118-125,共8页Coal Engineering

基　　金：中煤科工生态环境科技有限公司科技创新基金项目(0206KGST0028);中国煤炭科工集团有限公司科技创新创业资金专项项目(2019-2-ZD005)。

摘　　要：针对近直立煤层赋存条件,采用理论分析、数值模拟与工程验证相结合的方法,建立水文地质模型,提出一种多涌水来源下近直立煤层露天转井工开采动态涌水量计算方法。研究结果表明:近直立煤层露天转井工回采条件下,露天采坑内松散堆积体的持续补给量不容忽视;定义了采场“采坑充水—下渗补给—再充水—再补给”的浅部开采补给特征和“基岩含水层储量释放与垂向露天采坑水补给相结合”的深部开采补给特征;以青海先锋煤矿为例,开展了矿井涌水量动态计算,并与实测结果进行对比验证,验证方法可行。According to the occurrence conditions of near vertical coal seam,a hydrogeological model was established by combining theoretical analysis,numerical simulation and engineering verification,and a calculation method of dynamic water inflow with multiple water gushing sources was proposed as the near vertical coal seam development method was converted from open pit mining to underground mining.The results indicate that the continuous replenishment of loose deposits in open pit cannot be ignored when the open pit switches to underground mining.The shallow mining recharge characteristics of“pit water filling-infiltration recharge-water filling-recharge”and the deep mining recharge characteristics of“combination of bedrock aquifer reserve release and vertical open pit water recharge”were defined.Taking Xianfeng Coal Mine in Qinghai Province as an example,the dynamic calculation of mine water inflow was carried out,and the comparison with the measured results proved that the method is feasible.

关 键 词：近直立煤层 露天转井工 矿井涌水量 动态计算 数值模拟 

分 类 号：TD745.2[矿业工程—矿井通风与安全]