LiuJinDong

Based on the Fengshuling Tunnel of Quli Railway, the factors of tunnel excavation construction efficiency and the applicability evaluation of the three-arm rock drilling rig in three different excavation conditions of long and large tunnels were analyzed. The results show that the surrounding rock

Under the construction trend of "mechanization of manpower replacement and automation of manpower reduction", this study combines the construction conditions and engineering characteristics of a certain section of the Maple Ridge Tunnel of Quli Railway to use a three-arm rock drilling rig to