ZhuJianGuo

Research and Practice on the Three⁃bench Construction Method Using Dual⁃boom Drilling Jumbo in Tunnels with Weak Surrounding Rock

To address the issues of low construction efficiency and high safety risks associated with traditional microbench method in weak surrounding rock tunnels， a three-bench construction method using a dual-boom drilling jumbo was studied based on the Ganjia tunnel of Xining-Chengdu railway（ rock

railway tunnel

Comparison between Rock-drilling Jumbo and Manual Drilling-and-Blasting of Railway Tunnel

The further analysis on the advantages and disadvantages and the applicability of pneumatic drill and rockdrilling jumbo for high-speed railway tunnel is of great significance. The application of pneumatic drill in drilling and blasting and restrictive factors of drilling and blasting of rock