BF2 Fault Exploration and Grouting Treatment in Qingdong Coal Industry,Huaibei Mining Industry
In order to eliminate the threat of water damage and reinforce the surrounding rock of roadway in the process of roadway excavation in a mine,exploration and grouting reinforcement were carried out.Based on the geological and hydrogeological conditions of the mine,the risk of geological water damage,gas and fracture sup-port in fault zone is analyzed,and the design scheme of drilling and grouting is put forward.The grouting treat-ment project has completed 5 main holes,3 sounding holes and 18 branch holes,a total of 44 times of grouting.Through exploration and verification,it is considered that the treatment area has been fully filled with cement and the grouting effect is good.Ground grouting treatment can effectively reduce the threat of water disaster in the treatment area.At the same time,underground geophysical prospecting,drilling and other verification work should be carried out in a targeted manner to ensure the safety of roadway excavation.
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