矽卡岩型大水矿床帷幕内外水力联系

HYDRAULIC CONNECTION BETWEEN INSIDE AND OUTSIDE CURTAIN OF SKARN-TYPE LARGE-WATER DEPOSIT

为摸清邯邢地区某矿各含水层的水力联系情况,并验证帷幕注浆的实际效果,开展了大气降水、含水层水位等方面的研究。结果证明,第四系含水层及地表水体与灰岩含水层之间无水力联系,第四系水和地表水不会成为矿奥灰岩地下水的补给源。矿区奥灰岩含水层的补给方式只有一种,即区域奥灰含水层的侧向补给。同时,通过对大气降水和含水层水位变化情况的研究分析,确认帷幕注浆工程有效迟滞了区域地下水对矿区的入渗补给,降低了矿区发生突水事故的概率和危害程度,为矿山安全生产提供了有利的工程及地质保障。

In order to find out the hydraulic contact of each aquifer in a mine in Hanxing area,and verify the actual effect of curtain grouting,the research on atmospheric precipitation and aquifer water level has been carried out.The results show that there is no hydraulic connection between quaternary aquifer and surface water and limestone aquifer,and quaternary water and surface water will not be the recharge source of ordovician limestone groundwater.There is only one recharge mode of ordovician limestone aquifer in mining area,i.e.lateral recharge of regional ordovician limestone aquifer.At the same time,through the study and analysis of the atmospheric precipitation and aquifer water level change,it is confirmed that the curtain grouting project has effectively delayed the infiltration and recharge of regional groundwater to the mining area,the probability and harm degree of water inrush accident in mining area are reduced,and the beneficial engineering and geological guarantee for mine safety production is provided.