柠条塔矿区南翼S1210工作面涌水机制分析  

Analysis on mechanism of water gushing on S1210 working face of southern mining area in Ningtiaota

作　　者：李建文 

机构地区：[1]中煤科工集团西安研究院有限公司,陕西西安710077

出　　处：《中州煤炭》2016年第7期14-19,29,共7页Zhongzhou Coal

基　　金：陕西省工业攻关项目(2012K08-06);中煤科工集团西安研究院有限公司科技创新项目(2013XAYCX026)

摘　　要：柠条塔煤矿作为陕北矿区中开采侏罗系延安组煤层的矿井,涌水量一般不大,但2011年5月30日发生了涌水事故,查明涌水事故原因至关重要。通过地下水位观测、水文地质钻探等手段,进行了地面水文地质条件探查,总结了地表水系水位变化情况及地下水水位动态特征;结合现场放水试验、地下水连通试验,详细分析含隔水层特性,即含水层厚度、裂隙发育、富水性及变化规律。最终确定了涌水水源是工作面上覆侏罗系中统直罗组风化基岩裂隙承压水,涌水通道为西北部连续分布粗—中粒砂岩。As a mine of exploiting the coal of Jurassic Yan＇ an Formation in Northern Shaanxi mining area,the inflow of water of the Ningtiaota mining pit is not large. But mining flooding accident happened on May 30,2011. It is very important to find out the reason of accident. Firstly,hydrogeology survey work has been done by the meaning of hydrogeological drilling and observation of groundwater level,etc. This leads us to make a summing up of groundwater regime and the change of groundwater level. Secondly,combined with dewatering test on site and groundwater connectivity test,the paper analysed aquifer properties including aquifer thickness,characteristics of fracture development and water yield property,etc. Finally,it was found that water source is fissure confined water in weathered bedrock which is overlying Middle Jurassic Zhiluo Formation. And water gushing channel in coal mines was coarse-medium grained sandstone which is continuous distribution in the northwest.

关 键 词：柠条塔矿区 涌水 水文监测 导水通道 充水特征 

分 类 号：TD745.2[矿业工程—矿井通风与安全]