Coal mine rockbolt shoring current situation,necessity and significance having discussed rockbolt shoring parameter optimization design combining with leaping forward.

合跃进煤矿锚杆支护现状,探讨了锚杆支护参数优化设计必和重。

The rock bolt for superspeed hardening agent sandwich cement cartridge is a simple and valid rock bolt as a support.

快硬夹心水泥卷锚杆一种简单有效支护锚杆。

Description is made on the principle and application result of the short group bolting of slushing roadways in loosened rock.

论述了短锚杆群支护碎裂岩石中耙道原及实施效果。

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

液压锚杆钻机岩土锚固工程关键设备，对工程质量有重影响。

Accoording to the result on observation of rock pressure,adaptability of telescopiform bolt in soft rock road and reasonable structural parameter are analysed.

根据矿压观测果分析了可拉伸锚杆对软岩巷道支护适应及其合构参数。

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

摘锚固体内不密实位置和灌浆饱和度评价锚杆质量两个重参数。

A mechanics model of dynamometry bolt was given and it was shown that dynamometry bolt mainly bear tension and torque in real application.

给出巷道支护中测力锚杆力学模型,指出测力锚杆实际应用中主承受拉力、扭矩作用。

After several years to jumbolter research,the hard rocks always present in the soft ones in the wall rock procedure using jumbolter,which results in changing the boring tool during the procedure.

经过几年对锚杆钻机跟踪研究,发现锚杆钻机在围岩作业中常遇到软岩中有硬岩夹层现象,造成施工过程经常更换钻具问题。