Feasibility study on reducing protective coal pillar of F6 fault in Wugou Coal Mine

Abstract

According to the specific geological conditions, taking F6 fault of Wugou Coal Mine as the research object, combined with the research of fault and the floor limestone water in the area of space distribution relationship, numerical simulation and theoretical analysis are used to analyze the water inrush risk of different widths of coal pillars, and theoretical calculation is used to determine the reasonable width of coal pillars before F6 fault treatment, at the same time, considering the 3D seismic exploration results of F6 fault and the data of underground excavation, the grouting reinforcement range of the lower aquifer is analyzed theoretically. Combining the results of theoretical calculation and numerical simulation, the feasibility of reducing the coal pillar of F6 fault is studied. The research results have important significance for improving the recovery rate of coal resources in Wugou Coal Mine.

Keywords

• wugou coal mine
• floor water inrush
• fault activation
• reserved width of coal pillar
• grouting reinforcement