小保当一号煤矿松散含水层最大涌水量分析研究

Maximum water inrush of loose aquifer in Xiaobaodang No.1 Coal Mine

小保当一号煤矿上部赋存一定高度含水层,面临着复杂的水文地质条件和开采安全风险,矿井安全回采以及涌水量预测问题亟待解决。通过理论预测方法研究小保当一号煤矿的导水裂隙带高度和矿井涌水量。研究表明,小保当一号煤矿导水裂隙带高度为123.21~158.80 m,经预测开采工作面正常涌水量178 m^(3)/h、已采工作面涌水量202 m^(3)/h、掘进工作面涌水量35 m^(3)/h、主要井筒大巷涌水量60 m^(3)/h,矿井正常涌水量为475 m^(3)/h,选择其1.5倍作为矿井最大涌水量以计算系数,预测得到矿井最大涌水量为713 m^(3)/h。通过对地质特征和水文地质监测进行分析,制定了相应的防治水措施,建立了完善的排水系统,提供了科学有效的地质保障方案。

There is a certain height of aquifer in the upper part of Xiaobaodang No.1 Coal Mine,which is faced with complex hydrogeological conditions and mining safety risks.The problems of mine safety mining and water inrush prediction need to be solved urgently.The purpose of this paper is to study the height of water-conducting fractured zone and mine water inrush in Xiaobaodang No.1 Coal Mine by theoretical prediction method.The research shows that the height of water-conducting fractured zone in Xiaobaodang No.1 Coal Mine is 123.21~158.80 m.It is predicted that the normal water inrush of mining face is 178 m^(3)/h,the water inrush of mined face is 202 m^(3)/h,the water inrush of tunneling face is 35 m^(3)/h,the water inrush of main shaft roadway is 60 m^(3)/h,and the normal water inrush of the mine is 475 m^(3)/h.1.5 times is selected as the calculation coefficient of maximum water inrush of the mine,and the maximum water inrush of the mine is 713 m^(3)/h.Through the analysis of geological characteristics and hydrogeological monitoring,the corresponding water prevention and control measures were formulated,a perfect drainage system was established,and a scientific and effective geological guarantee scheme was provided.