three arm rock drilling jumbo

With the continuous improvement of tunnel construction mechanization, three-arm rock drilling jumbos have been widely used. Their drilling method uses high-pressure wind and water for drilling and slag discharge. However, for areas lacking water or unstable rock formations when encountering water

Based on the Funiu Mountain extra long highway tunnel project，the technical parameters and construction technology of the new three arm rock drilling jumbo are introduced in detail，and the advantages of the new three arm rock drilling jumbo in the construction of extra long tunnel by

The three-arm rock drill trolley is an important large machinery and equipment in the tunnel excavation, and its remarkable environmental protection, high eff iciency and safety features make the trolley more and more widely used, especially indispensable in the construction of long tunnels

Based On The Application Of Three-Arm Rock Drilling Jumbo In High-Speed Railway Tunnel, This Paper Analyzes The Eきciency And Economy Of Three-Arm Rock Drilling Jumbo In Double-Track Tunnel.This Paper Briefly Compares The Advantages Of Three Arm Rock Drilling Jumbo In Technology