放顶煤开采下围岩稳定性研究  

Stability of Surrounding Rock in Top Coal Caving Mining

作　　者：姚士茂 YAO Shimao(Buertai Coal Mine,CHN Energy Shendong Coal Group Co.,Ltd.,Ordos 017000,Inner Mongolia,China)

机构地区：[1]国能神东煤炭布尔台煤矿,内蒙古鄂尔多斯017000

出　　处：《能源与节能》2023年第10期192-194,共3页Energy and Energy Conservation

摘　　要：为了厘清布尔台煤矿42204综放工作面来压规律,基于FLAC3D数值模拟分析了剪切应力的变化规律。实际来压规律监测中,选择支架压力作为分析对象,发现与工作面距离小于70 m时,支架整体处于稳定状态;工作面推进至71.3 m时,工作面来压特征明显,来压持续长度16.9 m;原ZQL2X16280/19/35D型液压支架可维持巷道的稳定性。In order to clarify the pressure law of 42204 fully mechanized top coal caving face in Buertai Coal Mine,the change law of shear stress was analyzed based on FLAC3D numerical simulation.In the actual pressure law monitoring,the support pressure was selected as the analysis object.It was found that when the distance between the support and the working face was less than 70 m,the support was in a stable state as a whole;when the working face advanced to 71.3 m,the pressure characteristics of the working face were obvious,and the pressure duration was 16.9 m;the original ZQL2X16280/19/35D hydraulic support can maintain the stability of the roadway.

关 键 词：数值模拟 剪切应力 支架压力 来压特征 巷道稳定性 

分 类 号：TD322[矿业工程—矿井建设]