针对朱集矿副井井筒第1含水层(二叠系红层基岩孔隙含水层)采用地面预注浆、凿井涌水后工作面注浆等措施后仍不能满足涌水治理要求的现状,分析了该含水层突水特殊性的原因。结果表明,二叠系红层含水层为基岩孔隙含水层,在原始围岩压力下,基岩孔隙骨架和孔隙水之间有极大的吸附力,渗透系数10-5～10-3m/d;当围岩压力突然降低时,渗透系数激增数百倍,由弱含水层急剧转变为持续出水的强突水含水层。因此采用地面强预注浆及针对性的注浆均无法根治,需采取冻结等其他治理措施。

According to the first aquifer (the porous aquifer of the Permian red base rock) in the mine auxillary shaft of Zhuji Mine, after the pr-grouting at the surfa ce ground, the grouting at the shaft sinking face when water flow occurred during the shaft sinking and other measures conducted, the status of the water flow control r equirements could not be met.The paper analyzed the water inrush speciality cause of the aquifer.The results showed that the aquifer of the Permian red base rock was the porous aquifer of the base rock.Under the in-situ surrounding rock pressure, there was a high absorbability between the pore framework of the base rock and the po rous water and the permeability coefficient was 10-510-3 m/d.When the surrounding rock pressure suddenly reduced, the permeability coefficient would be increased by several 100 times and the weak aquifer would be turned to be a high water inrush aquifer with continued water flowing.Thus when the application of the surface powerfu . I pre-grouting and the proper related grouting were all difficult to control the water inrush, the ground freezing and other control measures should be applied.