摘要
我国煤炭资源丰富,但是开采存在许多隐患,为了减少煤体巷道失稳,改善顶板围岩受力状况,减小顶板变形量,有必要对煤矿顶板破断规律及力学特性进行分析。通过分析山西斜沟矿82401、82403工作面,运用公式及实际情况分析顶板破裂的力学问题,并结合FlAC3D模拟滑移破坏,得到顶板侧向运动及破断的力学模型、周期来压步距10~38m和弧形板长度为11~31m。
China has abundant coal resources,but there are many hidden dangers in mining,in order to reduce coal roadway instability,to improve the roof surrounding rock stress and reduce the roof deformation,it is necessary to analyze the breaking law and mechanical characteristics of the roof of the coal mine;Through analysing Xiegou Mine 82401、82403 working face,using the formula and according to the actual situation,the mechanics problems of roof rupture are analyzed,and combined with the FLAC simulation of slip failure,the mechanics model of roof lateral movement and rupture is obtained.The period is 10 ~ 38m and the length of arc plate is 11 ~ 31m.
作者
郝昭龙
HAO Zhaolong(Shanxi xishan JinXing energy co.,LTD Xiegou Mine,Shanxi Xingxian 033602)
出处
《煤矿现代化》
2019年第5期147-149,共3页
Coal Mine Modernization
关键词
巷道整体失稳
周期来压步距
弧形板长
roadway as a whole instability
periodic pressure step
long curved plate
