ZhangDong

The performances of Rocket Boomer353 rock drilling jumbo and AMV21SGBC-CC full computer rock drilling jumbo are compared. Through the actual construction process, the applicability of the two kinds of rock drilling jumbo is analyzed.

This text introduced the basic requestion of the hydraulic oil of drilling jumbo, and introduced the selection of hy¬draulic oil. Also, this text analyzed the contaminative approach of hydraulic oil, and advanced the measure of the prevent Hydraulic oil pollution.

the paper focuses on the comparison of economy between the drill rig and the pneumatic drill and also makes an economic analysis of the full-computer-controlled drill rig and the conventional drill rig. Those can be used as a guild when selecting equipments during tunneling.