在顿涅茨克矿区,由于地下含水层多,通常给深井(1000米以上)掘进带来困难。实际经验证实,在这样的条件下用水泥浆或粘土水泥浆进行预注浆不一定使掘井止水达到建筑标准与规范所规定的要求。在多孔和微裂隙岩层中进行预注浆止水是极复杂的。目前,在这种岩层中掘进的巷道量达30％。在深水平水压大的情况下,这容易使地下水进入井筒,同时使止水用的水 In the Donetsk mining area, it is usually difficult to dig deep wells (above 1000 meters) due to the large number of underground aquifers. Practical experience has shown that pre-grouting with grout or clay grout under such conditions does not necessarily require that the well stop watering meet the requirements of the Building Standards and Codes. Pre-grouting of water in porous and micro-fractured formations is extremely complicated. At present, the amount of tunnels dredged in this formation is 30%. In the case of large deep water pressure, this easily allows groundwater to enter the wellbore while allowing the water to stop