注浆改造技术在底板灰岩含水层治理中的应用

Application on grouting technology in aquifer control of floor Limestone

根据矿区的水文地质条件和工作面的瞬变电磁勘探结果,通过研究注浆改造技术,选择合理的注浆参数,成功地对朝川矿三井己16-17-21020工作面10～78 m、97～170 m和212～261 m段底板含水层进行了注浆改造。注浆后工作面没有出现底板裂缝及新的涌水点,原涌水点水量明显减少,且比较稳定,整个工作面涌水量小于10 m^3/h,为矿井开采防治水害提供了决策依据。

According to the conditions of the mine＇s hydrogeology and the result of transient electromagnetic exploration on the working face,the mine has successfully reformed aquifer in the coal bed floor underlying the panel 10～78 m、97～170 m and 212～261 m on the 21020 morking face by the research on grouting transform technique and the rational grouting parameters.The bottom hasn＇t occurred new crack and water inrush point after grouting.Water inflow is obviously lower than it in primary water point and more stable.Water inflow rate on the working face is less than 10 m^3/h.It offers the decision basis for mine water disaster prevention and control.