摘要
为解决梅花井矿窄煤柱巷道的安全回采问题,以梅花井矿1118106工作面回采巷道为工程背景,提出了巷道深孔爆破切顶卸压技术,设计了现场施工工艺并进行了应用。结果表明,爆破切顶卸压技术的应用能够有效降低巷道围岩应力集中程度,顶板下沉量最大值为76.75 mm,锚索受力最大值为156.64 kN,巷道围岩稳定性明显提高,控制效果显著。
In order to solve the safe mining problem of narrow coal pillar roadway in Meihuajing Coal Mine,this paper took the mining roadway of 1118106 working face in Meihuajing Coal Mine as the engineering background,firstly the deep hole blasting roof cutting and pressure relief technology of roadway was put forward,and the on-site construction technology was designed and applied.Results show that the blasting roof cutting and pressure relief technology can effectively reduce the stress concentration degree of surrounding rock of roadway.The maximum value of roof subsidence is 76.75 mm,the maximum value of cable force is 156.64 kN.The stability of surrounding rock of roadway is obviously improved,and the control effect is remarkable.
作者
黄海鹏
裴洪喜
HUANG Haipeng;PEI Hongxi(CHN Energy Ningxia Coal Industry Co.,Ltd.,Lingwu 757400,Ningxia,China;School of Energy and Mining Engineering,Shandong University of Science and Technology,Qingdao 266590,Shandong,China)
出处
《能源与节能》
2023年第11期114-116,119,共4页
Energy and Energy Conservation
关键词
窄煤柱巷道
钻孔爆破
切顶卸压
narrow coal pillar roadway
drilling and blasting
roof cutting and pressure relief
