平煤梨园矿宁庄井二_1煤层底板渗流场规律及防治水对策  

II1 Coal Floor Seepage Field Pattern and Water Control Measures in Ningzhuang Pit, Liyuan Coalmine

作　　者：王焕忠 

机构地区：[1]平煤集团梨园矿,河南汝州467500

出　　处：《中国煤炭地质》2009年第A02期45-48,64,共5页Coal Geology of China

基　　金：国家重点基础研究发展计划(973)项目(2007CB209400)

摘　　要：平煤集团梨园矿宁庄井作为华北型煤田代表,其二1煤的开采受到底板灰岩水的影响较大。根据宁庄井具体的水文地质特征,应用有限差分原理,对研究区的二1煤底板含水层进行了概化模拟,通过空间离散、应力期确定、复杂断层的wall处理、源汇项嵌入,对2003年到2006年应力期内研究区二1底板的含水层渗流场进行了模拟,在处理中突出了复杂条件下断层的处理。经过实际拟合,最终建立了宁庄井二1煤层底板含水层渗流场模型,并预测了5a、10a后的渗流场的变化规律。研究认为在目前矿井开采方式和抽水配置不变的情况下,宁庄矿井二1煤底板含水层的水位仍然保持较高的水平,尤其当向西北方向开拓经过滑动构造时,突水的危险性仍然较大。最后依据研究结论提出了相应的防治水措施。The Ningzhuang pit,Liyuan coalmine as a representative of North China karstic coalfield,the mining of its II1 coal is subjected to major impact from floor limestone water.Based on Ningzhuang pit concrete hydrogeological characteristics,the author carried out generalized simulation on II1 coal floor aquifer through finite difference principle.By the use of spatial spreading,stress period fixing,Wall treatment of complex faults,source sink terms embedding simulated II1 coal floor aquifer seepage field of the area during 2003 to 2006 stress period,gave prominence to treat of faults under complex conditions.Through practical fitting,established II1 coal floor aquifer seepage field model finally,and predicted seepage field variation pattern 5,10 years to come.The study considered that,under the condition of present mining system and water pumping arrangement,in the years to come,water level of II1 coal floor aquifer still keeps rather high level,especially when developing northwestward passes through gliding structures,hazard of water outburst is still rather high,finally,corresponding water control measures put forward based on research conclusions.

关 键 词：复合条件 渗流场特征 有限差分 突水 矿井水防治 

分 类 号：P641.2[天文地球—地质矿产勘探] TD745.2[天文地球—地质学]