中空螺旋注浆锚杆在封堵高温高压砂岩含水层涌水中的应用

Application of hollow screw grouting bolt plugging in the high temperature and high pressure sandstone gushing water

郭屯煤矿胶带机头硐室涌水为巷道直接揭露型高温高压点状砂岩孔隙裂隙涌水,涌水点分散,面积大,浆液流失多,治理难度大。应在巷道围岩浅层内注浆构筑止浆岩帽,施工中采用中空螺旋注浆锚杆作为注浆管,使用具有早强、速凝抗分散的双液注浆材料,控制好注浆工艺,成功实现对涌水巷道含水围岩浅层注浆加固。堵水效果良好。

Guotun coal mine belt conveyor head chamber directly locates in the high temperature and high pressure sandstone, which the pore fissure inflow has the large range , losing slurry much, and difficult to control. By construction plug in the surface of roadway surrounding rock, used hollow screw grouting bolt as grouting pipe, using the high early strength, rapid hardening and anti-dispersion double liquid grouting material, control the grouting technology, the successful implementation of the gushing water shallow layer grouting roadway surrounding rock. Achieved a good effect of plugging water.