摘要
西冯街矿3402工作面回采期间采空区涌水量剧增,三维地震勘察结果表明,底板岩层内存在明显的破碎带。物理相似模拟研究表明,破碎带影响下底板采动裂隙带发育深度达到24 m,采动裂隙带、破碎带内裂隙相互联通形成导水通道。设计底板原位改性技术进行治理,结合底板岩层综合柱状图设计注浆层位,注浆改造后采空区涌水量减小幅度达到67.9%,堵水效果良好,实现了底板奥灰含水层带压保水开采。
Aiming at the sharp increase of water inflow during the mining period of the 3402 working face of Xifengjie Colliery,the discovery of obvious fracture zone in the floor stratum through 3D seismic survey and a water conduction channel formed due to the interconnection of the mining fissure zone and the fissures in the crushing zone with 24 meters development depth in floor mining fissure zone under the influence of the fracture zone through physical similarity simulation,the author proposes the floor in-situ modification technology with the grouting layer design combined with the comprehensive column chart of the floor rock formation,which can reduce the water inflow in the goaf after grouting transformation by 67.9% with good water blocking effect and realize the water-preserved mining under pressure in Ordovician limestone aquifer.
作者
卫晋文
Wei Jinwen(Xifengjie Coal Industry Co.,Ltd.,Yangtai Group Industrial Co.,Ltd.,Jincheng,Shanxi 048100)
出处
《江西煤炭科技》
2023年第1期142-145,共4页
Jiangxi Coal Science & Technology
关键词
回采工作面
底板异常涌水
相似模拟实验
隔水层注浆加固
奥灰水
working face
abnormal water inflow in floor
similar simulation experiment
grouting reinforcement in aquiclude
Ordovician limestone water
