综放工作面顺序放煤采动力学分析  

Dynamic analysis of sequential caving in fully mechanized caving face

作　　者：郑海波 折雄 ZHENG Haibo;SHE Xiong(Shaanxi Binchang Hujiahe Mining Company,Xianyang 713602,China)

机构地区：[1]陕西彬长胡家河矿业公司,陕西咸阳713602

出　　处：《煤矿现代化》2020年第6期160-162,共3页Coal Mine Modernization

摘　　要：为研究综放工作面顺序放煤下的围岩受力特征及采动力学记录,对煤厚为11m的顺序放煤工序进行了数值模拟,结果表明,对于11m厚煤岩顺序放煤,顶煤下部的竖向应力值均大于煤岩上部和中部的竖向应力,顶煤中部应力分布较为均一,为顶煤高度方向应力最小的部位,从顶煤应力云图及应力状态分布曲线可以得到,顶煤下部是煤岩应力增幅最大的部位。In order to study the stress characteristics of surrounding rock and the record of mining dynamics under the sequential coal caving in the fully mechanized caving face,the numerical simulation of the sequential coal caving process with the coal thickness of 11m is carried out.The results show that for the sequential coal caving with the coal thickness of 11m,the vertical stress value of the lower part of the top coal is greater than the vertical stress value of the upper part and the middle part of the coal,and the stress distribution in the middle part of the top coal is relatively uniform,which is the highest stress in the height direction of the top coal In the small part,from the stress nephogram and stress state distribution curve of the top coal,the lower part of the top coal is the part with the largest increase of stress.

关 键 词：综放工作面 采动力学 顺序放煤 顶煤应力 

分 类 号：TD823[矿业工程—煤矿开采]