采空区垮落煤岩体净化效能时空演化规律研究——以凌志达煤矿为例  

Research on spatiotemporal evolution law of purification efficiency of collapsed coal and rock mass in goaf:Taking Lingzhida Coal Mine as an example

作　　者：杨鹏飞 刘锞锐 王档良[2] 王允卿 司湘 杨道坤 YANG Pengfei;LIU Kerui;WANG Dangliang;WANG Yunqing;SI Xiang;YANG Daokun(Shanxi Lingzhida Coal Industry Co.,Ltd.,Zhangzi 046606,China;School of Resources and Earth Sciences,China University of Mining and Technology,Xuzhou 221116,China)

机构地区：[1]山西凌志达煤业有限公司,山西长子046606 [2]中国矿业大学资源与地球科学学院,江苏徐州221116

出　　处：《煤炭科技》2024年第4期9-15,20,共8页Coal Science & Technology Magazine

基　　金：国家自然科学基金面上项目(42172293)。

摘　　要：采空区地下水库的建设对矿井水资源的利用意义重大。随着矿井水通过垮落煤岩体,水中悬浮物会产生迁移与沉积的现象,从而影响采空区垮落煤岩体的净化效能,进而影响采空区地下水库的净水能力和使用年限。采用考虑源汇项的水动力弥散方程作为描述悬浮物在采空区垮落煤岩体中迁移与沉积过程的数学模型,研究了悬浮物浓度随采空区内流程长度的变化规律,预计了凌志达煤矿采空区地下水库的使用年限,并分析了滞留因子对采空区地下水库使用年限的影响,可为评估采空区地下水库使用年限提供理论依据。The construction of underground reservoirs in goaf is of great significance to the utilization of mine water resources.As the mine water passes through the collapsed coal and rock mass,suspended matter in the water will migrate and deposit,thereby affecting the purification efficiency of the collapsed coal and rock mass in the goaf,and thus affecting the water purification capacity and service life of the underground reservoir in the goaf.The hydrodynamic dispersion equation considering the source and sink terms was used as a mathematical model to describe the migration and deposition process of suspended matter in the collapsed coal and rock mass in the goaf,and the variation law of suspended matter concentration with the length of the process in the goaf was studied.The service life of the underground reservoir in the goaf of Lingzhida Coal Mine was estimated,and the influence of retention factor on the service life of the underground reservoir in the goaf was analyzed,providing a theoretical basis for evaluating the service life of the underground reservoir in the goaf.

关 键 词：采空区 水净化 垮落煤岩体 净化效能 时空演化 

分 类 号：X523[环境科学与工程—环境工程]