潘二煤矿灰岩水害地面区域探查治理研究

Research on Exploration and Management of Water Damage in Limestone Ground Areas of Pan’er Coal Mine

随着采煤深度的不断增加,煤层底板灰岩承压水害对煤矿安全开采威胁日趋严重。为保障A组煤的正常开采,潘二矿28123工作面采用多分支水平井注浆技术进对1煤底板灰岩进行了地面区域超前探查治理,隔断奥灰含水层与A组煤的水力联系,达到防范奥灰水害的目的。

With the continuous increase of coal mining depth, the pressure water damage of coal seam floor limestone poses an increasingly serious threat to the safety of coal mining. In order to ensure the normal mining of Group A coal, the 28123 working face of Pan’er mine adopted multi branch horizontal well grouting technology to conduct advanced exploration and treatment of the limestone on the floor of coal one in the ground area, isolating the hydraulic connection between the ordovician limestone aquifer and Group A coal, and achieving the goal of preventing ordovician limestone water damage.