Houzhou Coal and Electricity Group Co., Ltd.

为解决干河煤矿2-126工作面采空区大量涌水的问题，通过三维地震地勘、数值模拟、理论计算等手段，探究底板岩层地质条件，分析采空区涌水原因，设计底板原位注浆改造方案。结果表明：2-126工作面底板存在破碎带，破碎带影响下工作面回采引起底板塑性破坏深度增大，与破碎带连通形成导水通道。通过对本溪组上部灰岩内破碎带区域注浆改造后，采空区涌水量显著减小，保障了工作面的安全高效生产。

In order to solve the problem of a large amount of water gushing in the goaf of the 2-126 working face of Ganhe Coal Mine, the geological conditions of the floor rock layer are explored through 3D seismic geological exploration, numerical simulation, theoretical calculation, and other means. The reasons for water gushing in the goaf are analyzed, and a in-situ grouting transformation scheme for the floor is designed. The results indicate that there is a fractured zone on the floor of the 2-126 working face. Under the influence of the fractured zone, the mining of the working face causes an increase in the depth of plastic damage to the floor, which is connected to the fractured zone to form a water channel. After grouting and transformation of the fractured zone area in the upper limestone of the Benxi Formation, the water inflow in the goaf is significantly reduced, ensuring the safe and efficient production of the working face.

1 工程概况
2 工作面水文地质情况分析
3 底板采动变形破坏规律研究
4 底板隔水层注浆改造方案及应用效果
5 结论与建议

王志超.干河煤矿2-126工作面异常涌水原因及防治技术研究[J].山东煤炭科技,2023,41(07):186-188+192.