摘要
针对我国华北型煤田日益严重的奥灰水害问题,以象山煤矿北一采区11#煤层9个底板探查钻孔放水试验成果为基础,采用三维地下水模拟软件Visual MODFLOW建立奥灰地下水系统模型。经过模型识别、校正,反演出奥灰灰岩水平渗透系数范围为0.322 3~0.349 9 m/d,垂向渗透系数0.007 8~0.043 6 m/d,弹性给位水度4×10-8^-8×10^-6,反复调试疏降水量来拟合地下水位,得到6个水平的涌水量值,其结果合理地反映出了地下水的流动特征与规律。对认识矿区地下水系统、水文地质参数、进行矿井涌水量预测具有重要的理论和实际应用价值。
According to the serious Ordovician water hazards problems,based on the dewatering test results of 11#coal seam floor exploratory drillings in Xiangshan Coal Mine,the Ordovician limestone groundwater system model was established using the Visual MODFLOW three-dimensional groundwater simulation software. By simulation calculation,the main parameters of Ordovician limestone,that horizontal permeability is 0. 3223 ~ 0. 3499 m / d,the vertical permeability coefficient 0. 0078 ~ 0. 0436 m / d and the elastic drainable porosity 4 × 10^- 8~ 8 ×10^- 6,were obtained. The research has important theoretical and practical value for studying the groundwater system and hydrogeological parameters and forecasting mine inflow.
出处
《陕西煤炭》
2015年第3期5-8,29,共5页
Shaanxi Coal
关键词
带压开采
奥陶纪灰岩
11#煤层
危险性预测
象山煤矿
mining with water pressure
Ordovician limestone
11#coal seam
risk prediction
Xiangshan Coal Mine
