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

结合跃进煤矿支护现状,探讨了支护参数优化设计的必要性和重要性。

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

超快硬夹心水泥卷是一种简单有效的支护。

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

了短群支护碎裂岩石中耙道的理及实施效果。

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

液压钻机是岩土程的关键设备，对程质量有重要影响。

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的力学模型,指出测力实际应用中主要承受拉力、扭矩作用。

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

摘要体内不密实的位置和灌浆饱和度是评价质量的两个重要参数。

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

根据矿压观测结果分析了可拉伸对软岩巷道支护的适应性及其合理的结构参数。

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.

经过几年对钻机的跟踪研究,发现钻机在围岩作业中常遇到软岩中有硬岩夹层的现象,造成施过程经常更换钻具的问题。