摘要
为了提高工作面煤柱回采量,减少巷道掘进量,店坪煤矿对202工作面决定采用沿空留巷无煤柱回采工艺,对沿空留巷段提出了聚能爆破切顶卸压施工,并采取“恒阻大变形锚索吊棚+支设单体柱+安装挡矸装置”联合支护,工作面回采后通过煤柱回采量、巷道掘进量以及地表塌陷对比分析无煤柱回采可行性。
In order to increase the recovery of coal pillars and reduce the roadway excavation,Dianping Coal Mine decided to adopt the gob-side retaining roadway without Coal Pillars Mining Technology in 202 working face,put forward the roof-cutting and pressure-relief construction of the gob-side retaining roadway by energy-accumulating blasting,and adopted the combined support of"constant resistance and large deformation anchor cable hanging shed+supporting single pillar+installing gangue retaining device".After mining,the feasibility of pillar-free mining is analyzed by comparing the coal pillar recovery,roadway excavation and surface subsidence.
作者
申志鑫
SHEN Zhixin(Huozhou coal group Liangshan Coal Co.,Fangshan Lu Dian Ping Coal Mine,Lvliang 033100,china)
出处
《煤矿现代化》
2020年第4期15-17,共3页
Coal Mine Modernization
关键词
综采工作面
无煤柱回采
切顶卸压
联合支护
可行性分析
Fully mechanized mining face
No pillar mining
Cutting roof pressure relief
Combined support
feasibility analysis
