上半断面的灌浆情况(图二)在灌浆孔灌浆,碰到岩层裂缝的孔可以灌入,如果泵压高,地层又软时,灌浆材料可以破坏地层灌入。灌浆后开挖时最好一点水都没有,但要达到需要很长的时间,所以灌浆量要有个目标,达到止水率即可,这样 Grouting in the upper half of the cross-section of the grouting hole grouting encountered rock cracks can be poured into the hole, if the pump pressure is high, the formation is soft, the grouting material can undermine the formation of irrigation. Excavation after grouting the best little water at all, but to reach the need for a long time, so the amount of grouting should have a goal, to stop the water rate, so