|
|
|
| Numerical simulation of asymmetric support technology in roadway excavation along goaf with large buried depth |
| Du Lele |
| Xingdong Mine, Jizhong Energy Resources Co., LTD., Xingtai 054000, China |
|
|
|
|
Abstract Aiming at the problem of large asymmetric deformation in the supporting process of goaf roadway in filling mining, the distribution characteristics of prestressed field under different supporting schemes were determined by numerical simulation with the case of No.11216 transport roadway in Xingdong Mine. The simulation results showed that, considering the support effect and cost comprehensively, the top cable arrangement was 3-3-3, the solid coal wall cable arrangement was double, and the coal pillar wall cable arrangement was single. The in-situ deformation observation results of surrounding rock showed that the support scheme could effectively control the deformation of roadway.
|
|
|
|
|
|
| [ 1 ] 赵国贞,马占国,孙 凯,等. 小煤柱沿空掘巷围岩变形控制机理 研究[ J ]. 采矿与安全工程学报,2010,27( 4 ):517 - 521.
[ 2 ] 史 红,姜福兴. 采场上覆大厚度坚硬岩层破断规律的力学分析[ J ]. 岩石力学与工程学报,2004,23( 18 ):3 066 - 3 069.
[ 3 ] 翁明月,殷帅峰,李其敏. 桁架锚索与单体锚索不同支护结构研究及应用[ J ]. 煤炭工程,2013( 4 ):100 - 103.
[ 4 ] 王 炯,郭志飚,蔡 峰,等. 深部穿层巷道非对称变形机理及控制对策研究[ J ]. 采矿与安全工程学报,2014,31( 1 ):28 - 33.
[ 5 ] 于 洋,柏建彪,王襄禹,等. 软岩巷道非对称变形破坏特征及稳定性控制[ J ]. 采矿与安全工程学报,2014,31( 3 ):340 - 346.
[ 6 ] 赵洪亮,姚精明,何富连. 大断面煤巷预应力桁架锚 索的理论与实践[ J ]. 煤炭学报,2007,32( 10 ):1 061 - 1 065.
[ 7 ] 殷帅峰,蔡 卫,何富连,等. 高预紧力桁架锚索与单体锚索平行布置支护原理及应用[ J ]. 中国矿业大学学报,2014,43( 5 ):823 - 830.
[ 8 ] 严 红,何富连,徐腾飞. 深井大断面煤巷双锚索桁架控制系统的研究与实践[ J ]. 岩石力学与工程学报,2012,31( 11 ):2 248 - 2 257.
[ 9 ] 张士岭,秦 帅. 沿空巷道变形与基本顶断裂位置关系数值模拟[ J ]. 煤 炭 技 术,2014,33( 11 ):97 - 99.
[ 10 ] 李 鹏,樊秀志,田 晓. 沿空掘巷窄煤柱合理宽度确定的数值模拟[ J ]. 煤矿安全,2013,44( 6 ):202 -204,207. |
|
|
|