Hydraulic Roofbolter is the key equipment for Ground Anchorage Engineering, and has very important affection to the quality of the engineering.

液压杆钻机是岩土固工程关键设备，工程质量有重要影响。

The effect of blasting load on anchored birder is a hot research issue in disaster prevention and mitigation of hydroelectricity project.

爆破荷固梁作用研究是水电工程防减一个热点问题。

Uncompacted location and grouting saturation degree in the zone of anchorage bar are the two main parameters for judging rock bolts quality.

摘要固体内不密置和灌浆饱和度是评价杆质量两个重要参数。