综放开采覆岩导水裂隙带高度研究  

Research of height of water flowing fractured zone of overburden strata in fully-mechanized top-coal caving

作　　者：张辉[1] 朱术云[1] 李秀晗 李涛 孟凡贞 

机构地区：[1]中国矿业大学资源与地球科学学院,江苏徐州221116 [2]菏泽能化有限公司赵楼煤矿,山东郓城274700

出　　处：《工矿自动化》2015年第1期10-14,共5页Journal Of Mine Automation

基　　金：国家重点基础研究发展计划(973计划)资助项目(2013CB036003);中国博士后科学基金面上项目(2013M541758)

摘　　要：为了对某工作面3煤层综放开采后的顶板水害防治提供理论依据,分别采用《建筑物、水体、铁路及主要井巷煤柱留设与压煤开采规程》中的经验公式预计、数值模拟和井下仰孔分段注水法实测3种方法对回采工作面的覆岩导水裂隙带高度进行了研究,所得经验公式预计值为51.1,59.0m,数值模拟计算值为63.5m,实测值为65.4m;综合比较分析得出该地质条件下开采覆岩导水裂隙带高度为63.5~65.4m,山西组砂岩含水层位于导水裂隙带范围内,属于直接充水含水层,但裂隙带未波及石盒子组砂岩含水层与新近系松散含水层,正常综放开采不会对工作面涌水产生直接影响。In order to provide theoretical basis of roof water disaster prevention of No. 3 coal seam in a working face after fully-mechanized top-coal caving, empirical formulas in Regulations of building, water, railway and leaving coal pillar and mining pressed coal in main shaft and drift, numerical simulation and underground up-hole water injection method by intervals were respectively adopted to study height of water flowing fractured zone of overburden strata of working face. Estimated values by empirical formulas are 51.1 m and 59.0 m respectively, calculated value by numerical simulation is 63.5 m, and measured value is 65. 4 m. Height of water flowing fractured zone under the researched geological condition is about 63.5-65.4 m after comprehensive comparison and analysis. Sandstone aquifer of Shanxi formation is in the water flowing fractured zone and belongs to direct water filling aquifer. The water flowing fractured zone is not spread to Shihezi sandstone aquifer and Neogene loose aquifer. Normal fully- mechanized top-coal caving will not influence on water gushing in working face directly.

关 键 词：工作面 综放 顶板 导水裂隙带 经验公式 数值模拟 仰孔分段注水 

分 类 号：TD745[矿业工程—矿井通风与安全]