摘要
根据地面物、钻探成果资料,东庞矿北井9214工作面所在区域地质构造发育,且有越界小煤矿采空区,工作面生产受越界老空水和底板奥灰水的双重威胁。针对该工作面复杂的水文地质条件,通过采取加大越界老空的探查和整修力度,消除了老空水的威胁,在断层附近区域,采取加大底板注浆加固钻孔密度和深度的措施,增强了受构造破坏区段的工作面底板隔水层的完整性,增大了该区域底板隔水层的厚度,提高了工作面底板隔水层的阻水能力。通过采取上述措施,确保了该工作面的安全开采。
Based on data of ground objects and drilling results,9214 working face in North Dongpang Mine threatened by goaf water and Ordovician limestone rock water,crossing small mine goaf,according to hydrogeological condition of the working face,the goaf water detection was conducted,and the corresponding measures were adopted to remove the goaf water threaten,the depth and density of the foundation were reinforced by grouting. Water resistance capacity of the bottom plate of the working face and the integrity of the bottom plate of the working face was improved,thickness of the aquifer was increased,these technology ensured the safe mining of the working face.
作者
高振宇
Gao Zhenyu(Hebei Coal Science Research Institute, Xingtai 054000, Chin)
出处
《煤炭与化工》
CAS
2018年第4期39-42,共4页
Coal and Chemical Industry
关键词
突水系数
断层
老空
注浆加固
复杂水文地质条件
burst coefficient
fault
old goaf
grouting reinforcement
complex hydrogeological conditions.
