|
|
|
| Study on the application of pre-splitting roof cutting technology in short wall working face with thick
and hard basic roof |
| Zhang Yonggang |
| Xinzhi Mine, Huozhou Coal Power Group Co., Ltd., Linfen 031412, China |
|
|
|
|
Abstract In order to solve the problem of safe and efficient mining of short wall fully mechanized mining face under the condition of thick and hard basic roof in Xinzhi Mine, the variation of roof displacement and the evolution characteristics of stope abutment pressure under the influence of primary mining were simulated and studied by FlAC3D numerical simulation software, and the mine pressure behavior law of working face under different advancing distance was compared and analyzed. The technical scheme of pre-splitting and roof cutting by two-way concentrated blasting was put forward, which was suitable for the short-wall face. Combined with the actual situation in the field and the monitoring results, it was considered that the application of the pre-splitting roof cutting technology of two-way concentrated blasting realized the weakening treatment of the hard roof, alleviated the pressure performance of the working face, and could meet the safe and efficient production of the mine.
|
|
|
|
|
|
| [ 1 ] 谢和平，任世华，谢亚辰，等. 碳中和目标下煤炭行业发展机遇[ J ]. 煤炭学报，2021，46（ 7 ）：2 197 - 2 211.
[ 2 ] 钱鸣高，许家林，王家臣. 再论煤炭的科学开采[ J ]. 煤炭学报，2018，43（ 1 ）：1 - 13.
[ 3 ] 曹建波. 大巷煤柱回收综采面矿压显现规律及控制研究[ D ]. 徐州：中国矿业大学，2022.
[ 4 ] 张成行. 松散层开采水文地质条件演化及防水煤柱安全回收上限研究[ D ]. 徐州：中国矿业大学，2020.
[ 5 ] 庄学安，臧传伟，庄 威. 短壁工作面采场坚硬顶板强制放顶技术[ J ]. 煤炭科学技术，2014，42（ 11 ）：14 - 16，4.
[ 6 ] 张 云，曹胜根，来兴平，等. 短壁块段式采煤覆岩导水裂隙发育力学特性分析[ J ]. 煤炭学报，2020，45（ S2 ）：551 - 560.
[ 7 ] 朱梦博，刘 浪，王双明，等. 短-长壁工作面充填无煤柱开采方法研究[ J ]. 采矿与安全工程学报，2022，39（ 6 ）：1 116 - 1 124.
[ 8 ] 尚国银，张立辉. 大采高短壁综采工作面矿压规律研究及顶板管理[ J ]. 煤炭科学技术，2022，50（ S1 ）：64 - 70.
[ 9 ] 刘 程，李树刚，秦 松，等. 急倾斜中厚煤层斜切分段短壁工作面围岩变形监测与控制[ J ]. 煤矿安全，2016，47（ 6 ）：59 - 62.
[ 10 ] 王方田，屠世浩，屠洪盛，等. 薄煤层短壁综采工作面石灰岩顶板破断特征及矿压显现规律[ J ]. 煤矿安全，2014，45（ 2 ）：193 - 196. |
|
|
|
