井下探放水钻孔涌水量优化预测及水量衰减规律研究 The Optimization of Drilling Water Inflow Prediction about the Underground Drain and the Study on the Attenuation Law of Water

以钱营孜煤矿3212工作面探放水工程为例，针对目前煤矿安全生产中“钻孔涌水量预测”的重要问题，在分析计算不同阶段和条件下的矿井涌水量的基础上，对涌水量计算结果的准确性与群孔探放钻孔涌水量干扰进行分析，研究工作面涌水量衰减规律。研究表明：采用大井法优化方法预计探放水过程中钻孔涌水量，较原计算方法更合理，更符合地下水运动规律。在同一个钻窝内进行多个钻孔的探放时，相邻钻孔的初始水量有减小的趋势。以静储量为主的煤系砂岩裂隙水，随着疏放探放水钻孔的涌水量总体呈下降趋势。 Taking QianYingZi coal mine 3212 working face of draining project as an example, specific to the important issue of “borehole water inflow forecast” during the present situation of coal mine safety production, based on the analysis and calculation of mine water inflow in different stages and conditions, we research the attenuation law of water inflow on the working face by analysing the accuracy on the calculation results of the inflow and the interference of the group of exploration boreholes inflow. Researches show that: the big well method is more reasonable than the original calculation method in process of the optimization to drain hole water in flow and it is more in line with groundwater movement rule. For multiple drilling exploration in the same drill socket, adjacent borehole of initial water has a tendency to decline. Give priority to those with static reserves of coal measures hole as a whole, it is on the decline.