二氧化碳预裂技术在坚硬顶板工作面的应用  

Application of Carbon Dioxide Precracking Technology in Hard Roof of Working Face

作　　者：胡杰 Hu Jie(No.1 Fully Mechanized Mining Team of Silaogou Colliery,Jinneng Holding Coal Industry Group,Datong,Shanxi 037000)

机构地区：[1]晋能控股煤业集团四老沟矿综采一队,山西大同037000

出　　处：《江西煤炭科技》2024年第3期29-31,共3页Jiangxi Coal Science & Technology

摘　　要：8113工作面开采的C3-5#煤层直接顶板岩性为砂质泥岩,厚11.8 m,属坚硬顶板,其弯曲破断会引起应力扰动,导致工作面初次来压步距较大,且易形成冲击地压。为了确保8113工作面采空区的悬板及时跨落,采用了二氧化碳工作面采空区侧顶板致裂技术。现场监测结果表明,该技术能够安全高效地减弱综放工作面初次来压期间老顶集中跨落所带来的冲击。The stress disturbance caused by the bending and fracture of No.C3-5 coal seam roof in the 8113 working face results in a large initial pressure step distance and easy formation of rockburst.To ensure the timely fall of the hanged plate in the goaf of the 8113 working face,the carbon dioxide working face goaf side roof cracking technology has been adopted,whose on-site monitoring results indicate that this technology can safely and efficiently reduce the impact caused by the concentrated falling of the main roof during the initial pressure period of the fully mechanized mining face.

关 键 词：坚硬顶板 二氧化碳致裂 周期来压 

分 类 号：TD823.85[矿业工程—煤矿开采]