官地矿22611回采工作面导水裂隙带发育高度研究

Research on development height of water flowing fracture zone of working face 22611 coal mining working face in Guandi coal mine

研究2~#煤上覆岩层顶板裂隙发育情况是官地矿防治水重要基础工作。以22611工作面为研究对象,依据已有的规程中计算导水裂隙带的公式对回采工作面煤层顶板导水裂隙带的高度进行预计,利用FLAC^(3D)数值模拟软件进行模拟来获得的导水裂隙带发育高度,结合井下仰孔压水试验法对22611回采工作面导水裂隙带发育高度现场实测。通过3种方法的综合应用,确定22611工作面的导水裂隙带的发育高度为47.6 m,对防治水工程实践有重要指导意义。

It is importantly basic work of the water prevention and control in Guandi Coal Mine to study the developmental condition of roof fissures in upper overlying strata of 2#coal. Taking the 22611 working face as the research object,the height of the water flowing fractured zone is calculated. in the roof of the working face on the basis of empirical formula for calculating water flowing fractured zone in the regulation and using FLAC3 Dnumerical simulation software to obtain the developmental height of the water flowing fractured zone,Measuring height of water flowing fractured zone in 22611 working face by pressuring water flowing with underground upper. With the comprehensive application of three methods,the height of the water flowing fractured zone on the 22611 working face is 47. 6 m,which provides significant guidance for the engineering practice of water prevention and control.