Study on water hazard regional control pattern based on different borehole type combination

In order to improve the applicability of water hazard regional control and optimize the borehole group layout,coal floor water regional control pattern classification method was studied based on different borehole group type.Xingtai mining area regional control engineering condition was introduced as the study background.Integrated drilling technology including surface directional drilling,radial jetting and underground directional drilling was studied to form different types of main boreholes and branch boreholes.Borehole layout is controlled by multiple influencing factors including ground condition,mining engineering and target layer characteristics.Water hazard regional control pattern classification method was established based on integrated drilling,influencing factors and borehole types.When regional control plan was formulated,economically feasible and technically reasonable drilling technology should be selected to comprehensively cover the entire control region by different types of borehole combinations.Based on the pattern classification method,shallow structural development area strengthening pattern,morphologic complex area transformation pattern and deep multiple areas detecting pattern were established.Research results can provide a reference for mine water regional control engineering design in north China.