摘要
结合彬长矿区蒋家河煤矿二采区水仓工程地质特征,基于"底板—两帮—顶板"之间相互影响关系,运用巷道围岩极限自稳平衡圈理论,按照"治顶先治帮、治帮先治底、结合部是关键"原则,提出了"高强度锚网索支护+全断面注浆加固+帮顶喷射混凝土封闭围岩+底板锚索拉底+底板钢筋混凝土封底"综合支护方案。现场试验表明,支护方案安全可靠,能够有效控制巷道围岩破坏变形。
Combined with the engineering and geological characteristics of sump at the second mining area of Jiangjiahe Coal Mine in Binchang mining area,based on the interaction of ＂ floor-rib-roof＂,the ultimate self-stable circle theory in roadway was applied. According to the rule of ＂ rib come first if roof will be controlled,floor come first if rib will be controlled,and junction is the key＂,a comprehensive supporting solution was put forward as ＂ high strength bolt-mesh-anchor supporting ＋ grouting reinforcement in whole section ＋sealing surrounding rock by sprayed concrete on rib and roof ＋ undercutting by anchor on floor ＋ bottom sealing by reinforced concrete on floor＂. By field test,it was shown that the supporting solution is safe and reliable and can control the deformation of roadway effectively.
出处
《中州煤炭》
2015年第11期59-62,共4页
Zhongzhou Coal
