煤巷掘锚护一体化快速掘进支护工艺设计与应用

以煤层巷道快速掘进支护工艺方案为研究对象,对煤层巷道基本情况进行了简要介绍,利用FLAC3D软件对矩形截面和拱形截面巷道的围岩变形情况进行分析,结合实际情况确定巷道截面为矩形,宽4.8 m、高3.2 m.基于煤矿工程实践经验对巷道支护方案进行设计,利用FLAC3D软件对锚杆关键工艺参数进行优化设计,当锚杆直径为22 m...

Design and application of integrated rapid excavation supporting technology for coal seam roadway driving and anchoring

This article mainly focused on the rapid excavation and support technology of coal seam roadways as the research object.First，it briefly introduced the basic conditions of coal seam roadways.The FLAC3D software was used to analyze the surrounding rock deformation of the rectangular and arched cross-section roadways.According to the actual situation，the cross-section of the roadway was determined to be rectangular，and the width and height were 4.8 m and 3.2 m.Based on the practical experience of coal mine engineering，the roadway supporting plan was designed，and the key process parameters of the bolts were optimized by the FLAC3D software.It was found that the supporting effect is the best when the diameter is 22 mm，the length is 2.5 m，and the spacing and row spacing both are 0.7 m.
The supporting technology program was applied to the actual project，through the monitoring of key indicators，it was found that the rapid excavation supporting technology program was feasible，achieved the expected effect，and created good safety benefits for coal mine enterprises.