某矿大采高工作面回风顺槽布置方案优化探讨  

Optimization of layout scheme of return air groove of working face with large mining height of a mine

作　　者：蒋万里 

机构地区：[1]长治三元中能煤业有限公司,山西长治046000

出　　处：《同煤科技》2017年第6期17-19,22,共4页Datong Coal Science & Technology

摘　　要：为优化大采高工作面回采巷道掘进层位,本文通过三维数值模拟计算得到了沿底掘进1308大采高工作面回风顺槽底板围岩塑性破坏范围较沿顶掘进小7.49 m,前者有利于控制底鼓,进一步模拟得到沿底掘进时巷道围岩位移及应力分布,实践结果表明:顶底板收敛61 mm、两帮移近68 mm,与数值模拟基本吻合,研究结果能为类似条件巷道掘进与支护提供一定参考。In order to optimize the excavation level of mining roadway with large mining height, the plastic failure range of the surrounding rock of the floor of the return air groove mining along the bottom of the 1308 working face with great mining height is 7.49 m smaller than that of mining along the top by the means of three-dimensional numerical simulation. The former is beneficial to control the floor heave, and the further simulation shows the displacement and stress distribution of surrounding rock mining along the bottom, the results show that the top and bottom plates converge to 61 mm and the two sides move nearly 68 mm, which are in good agreement with the numerical simulation. The research results can provide the certain reference for roadway excavation and support under similar conditions.

关 键 词：大采高回风顺槽 锚网索支护 沿顶掘进 沿底掘进 矿压规律 

分 类 号：TD822.2[矿业工程—煤矿开采]