煤矿井下探放水钻孔涌水量预测方法分析

Analysis on Prediction Method of Water Inflow of Drilling Hole in Mailing Underground Drilling

煤矿井下探放水钻孔涌水是紊流状态下的有压管道流,探放水钻孔可分为探放老空积水钻孔、探放断层水和陷落柱水钻孔、探放含水层水钻孔等几类。通过对开滦矿区多年来井下探水钻孔涌水情况分析,结合流体动力学的相关理论和地下水动力学方法,逐类提出了井下探放水钻孔涌水量预测公式,分析结果能指导矿区井下探放水钻孔施工中的涌水量预测工作。

Mailing borehole water gushing is a turbulent pipe flow under turbulent conditions,and drilling and drainage can be divided into several parts,such as drilling and drilling old empty water,exploring and releasing fault water and sinking column,drilling water and drilling aquifer.Have made a preliminary analysis of the borehole water exploration in the Kailuan mining area for many years.Combined with the theory of fluid dynamics and the method of groundwater to force,a prediction formula for water yield of underground drilling and drilling has been put forward by category.The analysis results can guide the prediction of water inflow in underground water exploration and drilling construction in mining areas.