Surface Grouting Water Stop Reinforcement Technology Under Disturbed Strata

After occuring water inrush in Banji Coal Mine shaft, surface grouting is applied to fill and strengthen strata. Although grouting is an important method of controlling water inrush during domestic shafts, the water inrush caused serious disturbances around the surrounding strata, resulted great changes of primitive hydrogeological parameters. However, domestic surface grouting reinforcement technology under disturbance strata is the precedent, the existing research results could not guide the field grouting test scientifically and effectively, therefore, the research is significantly practical. The grouting theory under disturbance strata is revised and improved through laboratory and field tests, the grouting effect is better, which also provides a good basis for grouting construction in similar formations conditions.