渗流有限元法模拟松散含水层对工作面充水影响  

Simulation on the Effect of Unconsolidated Aquifer on Work Face Water Inrush with Seepage FEM

作　　者：董义革[1] 刘秀娥[2] 许延春[2] 

机构地区：[1]北京电子科技职业学院,北京100029 [2]天地科技股份有限公司开采所事业部,北京100013

出　　处：《煤矿开采》2005年第5期4-5,11,共3页Coal Mining Technology

基　　金：国家自然科学基金资助项目(50274042)

摘　　要：将水利工程中的渗流有限元法应用于模拟研究松散含水层对工作面的充水影响,既考虑了松散含水层的富水性、水头,又考虑了采动影响对覆岩的破坏,继而引起的渗流通道的变化。研究了第四系底部黏土层在水体下采煤中的作用,认识到当底黏厚度大于3m时,上部含水层对工作面充水量很小。为今后评价黏土层在水体下采煤中的阻隔水作用提供理论参考。Seepage FEM in hydraulic engineering is first used to simulate the effect of unconsolidated aquifer on work face water inrush, which considers water - bearing capability, head of unconsolidated aquifer and changes of seepage channel induced by the damage of rock affected by mining. The functions of clay layer under Quaternary in under - water mining is studied, and when thickness of clay layer is larger than 3m, work face water inrush quantity is very little from upper water bearing layer. It provides reference in order to evaluate the resistance function of clay layer in under-water mining.

关 键 词：渗流有限元 松散含水层 工作面 充水 

分 类 号：TV12[水利工程—水文学及水资源]