|
|
|
| Practice and application of surrounding rock deformation control technology in gob-side entry of Xingdong Mine |
| Kang Jindong |
| Jizhong Energy Resources Co., Ltd., Xingtai 054000, China |
|
|
|
|
Abstract No.11216 Face of Xingdong Mine was an isolated island working face with two sides mined out. The mining depth reached nearly 1,000 meters. Affected by high ground stress, the gob-side entry was prone to continuous large deformation during the mining service period, which posed a difficult support problem. Multiple expansions and repairs were required to realize normal mining.To solve the support problems during the mining cycle of the isolated island working face, a collaborative control technology of “external anchoring and internal unloading” was proposed. This technology adopted active enhanced support for the surrounding rock in the shallow part of the roadway to improve the self-bearing capacity of the rock, and implemented internal unloading and cavity creation in the deep part of the roadway to reduce the stress in the peak zone.Engineering practice showed that the collaborative control technology effectively alleviated the frequent repair of gob-side entries in the isolated island working face and improved the mining efficiency.
|
|
|
|
|
|
| [ 1 ] 谭 香,伍伟敏,卢耀晖. 深部高应力巷道卸压控制及支护技术研究[ J ]. 矿业研究与开发,2022,42( 1 ):106 - 112.
[ 2 ] 王建军. 超长孤岛工作面回采巷道应力分布及卸压控制[ J ]. 同煤科技,2020( 5 ):28 - 31.
[ 3 ] 于 洋,柏建彪,王襄禹,等. 残留煤柱工作面巷道布置及卸压控制研究[ J ]. 煤炭学报,2020,45( S1 ):49 - 59.
[ 4 ] 谭云亮,郭伟耀,赵同彬,等. 深部煤巷帮部失稳诱冲机理及“卸-固”协同控制研究[ J ]. 煤炭学报,2020,45( 1 ):66 - 81.
[ 5 ] 慕相云. 荣华一矿深井软岩煤巷卸压支护技术的实践[ J ]. 黑龙江科技信息,2016( 12 ):126.
[ 6 ] 张向阳. 动压影响下大巷围岩变形机理与卸压控制研究[ D ]. 合肥:安徽理工大学,2007.
[ 7 ] 黄炜伟. 基于水力压裂的强动压高应力巷道卸压技术[ J ]. 煤,2015,24( 8 ):55 - 57.
[ 8 ] 耿敏敏,马占国,龚 鹏,等. 高应力煤巷卸压孔布置方式对卸压效果影响分析[ J ]. 中国安全生产科学技术,2012,8( 11 ):5 - 10.
[ 9 ] 刘红岗,贺永年,韩立军,等. 深井煤巷卸压孔与锚网联合支护的模拟与实践[ J ]. 采矿与安全工程学报,2006( 3 ):258 - 263.
[ 10 ] 佐江宏. 高应力强动压煤巷“卸压-耦合”支护技术研究[ J ]. 煤矿安全,2018,49( 6 ):70 - 73. |
|
|
|