摘要
1501综采工作面回采区域地质简单,切眼掘进断面达到29.75 m^(2),切眼围岩控制关键是对顶板岩层进行控制。采用理论分析方法、工程类比法对大断面切眼围岩控制技术方案进行设计,并对切眼掘进后顶板下沉量进行监测,结果表明:切眼顶板最大下沉量在57 mm内,顶板离层量在5 mm以内,确保了切眼顶板围岩稳定。
Open-off cut tunneling section reaching 29.75 m^(2),the mining area of 1501 fully mechanized mining face is of simple geology and the key to control the surrounding rock of the open-off cut is to control the roof rock.Using theoretical analysis method and engineering analogy method,the article designs a large-section open-off cut surrounding rock control technology plan,and monitors the roof subsidence after open-off cut excavation,which ensures the stability of the surrounding rock of open-off cut roof,the maximum sinking of open-off cut roof is within 57 mm,and the amount of roof separation is within 5 mm.
作者
郭洪臣
Guo Hongchen(Shanxi Shouyang Luyangchangtai Coal Industry Co.,Ltd.,Jinzhong,Shanxi 045400)
出处
《江西煤炭科技》
2021年第2期71-73,共3页
Jiangxi Coal Science & Technology
关键词
综采工作面
大断面切眼
围岩控制
锚网与锚索联合支护
fully mechanized mining face
large section open-off cut
surrounding rock control
bolt-mesh-cable support
