long tunnel

In order to actively promote the work of "mechanized substitution, automation and reduction" in the field of construction, the full hydraulic computer-guided three-arm rock drilling rig equipment was launched to replace the traditional manual hand-held pneumatic drilling rig excavation and blasting

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

With the rapid development of the transportation industry,the characteristics of short construction period,high construction quality and high construction technology have become more and more prominent in the construction of high - speed railway tunnels. In the long tunnel construction,the blasting

With the rapid development of Chinas high-speed railway construction，the construction standards continue to increase． In order to ensure the rapid excavation of long and large tunnels，to ensure the safety of operators，to reduce the number of operators，and to reduce labor intensity，