厚砂砾含水层下特厚煤层综放开采防治水技术研究  

Water Control Study for Extra-thick Coal Seam Fully Mechanized Caving Mining under Thick Sandy Conglomerate Aquifer

作　　者：刘英锋[1] 

机构地区：[1]煤炭科学研究总院西安研究院,陕西西安710054

出　　处：《中国煤炭地质》2011年第1期25-28,共4页Coal Geology of China

摘　　要：水帘洞煤矿地表水系发育,煤系地层上覆的白垩系洛河组和宜君组巨厚层状砂砾岩含水层,含水丰富,对矿井的安全开采构成了威胁。在详细分析矿区顶板含水层特征、隔水层岩性组合特征及隔水性能基础上,采用比拟法计算了综放条件下顶板导水裂隙带发育高度,并用数值法研究了不同采宽条件下顶板导水裂缝带发育规律,预计了工作面涌水量,为评价煤矿综放条件下工作面安全回采可行性提供了科学的依据。Surface drainage is rather developed in the Shuiliandong coalmine area,coal measures strata overlying Cretaceous Luohe and Yijun formations extra-thick layered sandy conglomerate aquifer contains abundant water and threatens safe working of coalmines.Based on detailed analysis of roof aquifer characteristics,aquifuge lithologic association characteristics and water confining performance,using analogue method estimated height of roof water conducted zone under fully mechanized caving condition,and using numerical method studied roof conducted zone development pattern under different shear width conditions,and predicted working face mine inflow.Thus the study has provided scientific basis for working face safe winning feasibility under coalmine fully mechanized caving condition.

关 键 词：综放采煤 导水裂隙带高度 水文地质特征 覆岩破坏规律 防治水 

分 类 号：P641.461[天文地球—地质矿产勘探] TD745[天文地球—地质学]