Multi-system Prevention and Control Technology of “Blocking-plugging”in Fault Water Guiding Disaster of Yangcheng Coal Mine

To solve the problem of water inrush around the roadway under the influence of deep faults, this paper takes 1308 transportation roadway of Yangcheng Coal Mine as an example to construct a multi-system prevention and control scheme for the “blocking-plugging” in the underground and ground. Firstly, the underground water retaining belt is constructed: double retaining wall + grouting between walls, which eliminates the danger of sudden increase of ash water, and then establishes a ground water blocking system: 3 grouting holes from the ground, is injected into the fault layer of the Jizhuang fault and the Ordovician limestone aquifer through grouting the hole to achieve the purpose of sealing the water-conducting fissure and water source. The “blocking-plugging” multi-system water control system completely blocks and cuts the incoming water passage, and no replenishment water pressure, while saving 1 million annual drainage costs. The threat of water damage to the Ordovician limestone water has been completely eliminated, and the production safety of the mine has been guaranteed.