断层在煤矿分采区涌水量预测数值模拟中的影响

Faults Effection on Numerical Simulation Method of Gielding Water in Mining Area Exploitation

断层的存在影响着地下水流场的分布和运移,结合东北地区高角度煤层分水平分采区开采现状,建立了一个理想的地下水含水系统模型,应用Visual Modflow软件,考虑断层性质、位置、渗透系数等因素,采用数值模拟方法研究并探讨断层对模拟区渗流场分布和采区涌水量大小的影响特征。研究结果表明:1在模型中将断层概化为墙体(Wall),通过改变厚度、渗透系数来改变其性质得到较好效果;2断层的存在改变了原始水流场的分布;3断层的导水性质对水流场分布影响大,也就是对采区涌水量影响大。

The existence of faults makes effect on underground water distribution and migration,combines the divided water mining area with high angle of coal seam in northeast of China, creating an ideal model of the groundwater aquifer system with tool of Visual Modflow. Using numerical simulation method to study and explore the impact on underground water distribution and gielding water.The research shows, using the wall replace the fault in model achieves good results,then the existence of the faults effects on underground water distribution and at last the conductivity properties of faults influences the water distribution and gielding water.