大跨度T型交叉皮带巷不停机贯通技术研究

摘要

Taking the 2116 roadway in layer 12 -3 #of Jinhuagong mine as research sample,study on the linkage technology for T -intersection beltway with large -scale while belt doesn't stop running integrated use of theoretical analysis and field measurement,the results show that:early reinforcement and protection provide a strong guarantee to maintain the rock of T -intersection beltway with Large -scale steady and normal coal production;it is very possible to linkage for T -intersection beltway with large -scale while belt doesn't stop running under the common of side drift method dynamic reinforcement technology;the mine pressure monitoring results show that the amount of roof and floor closer,the convergence between two sides of the beltway in 301 panel and the roof subsidence of 2116 roadway are 6. 6mm,5.0mm and 11.14mm during constructing,achieved the original object.%以晋华宫矿12-3＃层2116巷为研究对象，综合运用理论分析和现场实测的手段，研究了大跨度 T 型交叉皮带巷的不停机贯通技术。结果表明：提前加固和防护为维持大跨度 T 型交叉口围岩的稳定和正常的输煤生产提供了强有力的保障；侧洞法施工技术和动态支护设计共同作用，使大跨度 T 型交叉皮带巷不停机贯通成为必然；矿压监测结果表明，整个贯通过程中，2116巷顶板下沉11.14mm，301盘区皮带巷顶底板移近量和两帮收敛量分别为6.6mm 和5.0mm，实现了大跨度 T 型交叉皮带巷的不停机贯通。