混凝土砌块墙沿空留巷技术  

Gob-side Entry Retaining Technology of Concrete Block Walls

作　　者：林东才[1] 孙锐克[1] 贾传洋[1] 

机构地区：[1]山东科技大学资源与环境工程学院,山东青岛266590

出　　处：《煤矿安全》2014年第5期82-84,共3页Safety in Coal Mines

摘　　要：发耳煤矿开采煤层为高瓦斯煤层,为了解决工作面上隅角瓦斯超限问题,缓解采掘接替紧张状况,决定在10302综采工作面轨道顺槽采用混凝土块砌墙沿空留巷。通过对混凝土块强度、混凝土块砌墙工艺、墙体稳定措施等几个方面的研究,及对留巷进行矿压观测,分析了巷旁留巷变形和墙体的受力情况。结果表明混凝土块砌墙能够有效的保证顶板的稳定性及完整性,解决了沿空留巷施工和巷旁支护难以适应综采高效、快速、大断面的矛盾。The mining seam in Fair Coal Mine is high - gas coal. In order to solve gas overrun problems in upper corner of the working surface and alleviate the tense situation of mining - excavation relay, gob - side entry retaining was carried out with concrete walls at 10302 mechanized mining face track along crossheading. This article researches concrete block strength, concrete block wall process and wall stabilization measures and several aspects of concrete block wall, observes pressure of gobside entry driving, and analyzes the roadway deformation and concrete block wall stress condition. Results show that the concrete block wall can effectively guarantee the stability and integrity of the roof, and solve the conflicts that the construction of gob - side entry retaining and the support of road- ways is difficult to adapt to the quick efficient and big cross section of the fully - mechanized coal mining technology.

关 键 词：混凝土砌块 沿空留巷 矿压观测 围岩变形 高瓦斯煤层 

分 类 号：TD823.47[矿业工程—煤矿开采]