摘要
覆岩结构及运移特征受工作面采出空间影响较大,其对工作面围岩矿压显现程度起主要控制作用。以某煤矿2-106大采高综采工作面采高对上覆岩层结构及运动特征影响的问题为背景,采用数值计算和现场实测相结合的方法,对不同采高时的覆岩结构及其运动特征进行了研究,得到了工作面覆岩运动特征、冒落带高度及离层量受采高变化影响的规律。结果表明:随着采高增大,上覆岩层运动更加剧烈,采动影响范围增大,冒落带高度非线性上升,煤壁片帮的趋势增加,裂隙带的高度、离层最大值增加。研究结果在现场实测中得到了验证。
Overlying strata structure and movement characteristics influenced by the working face mining space play an important role in the strata behavior of workface.Based on the problem that overlying strata structure and movement characteristics influenced by mining height in 2-106fully-mechanized working face with large mining height,overlying strata structure and movement characteristics of different mining heights were studied with the method combined numerical calculation with field measurement.Laws of overlying strata movement characteristics,height of caving zone and separation value changing with different mining heights were obtained.The results show that：as with the mining height increasing,the overlying strata movement is more intense,mining influence range increases,height of caving zone nonlinear rises,tendency of coal wall spalling increases,fractured zone height and maximum of separation value also increases.The research results have been verified in the field test.
出处
《中国矿业》
北大核心
2016年第6期75-78,83,共5页
China Mining Magazine
关键词
大采高
非线性
覆岩结构
large mining height
nonlinear
overlying strata structure
