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。

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

述了短锚杆群支护碎裂岩石中耙道原理及实施效果。

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

超快硬夹心水泥卷锚杆是一种简单有效支护锚杆。

Technical scheme, design, construction and application of steel pipe soil nail combining rabbling pile in a foundation ditch support in Shenzhen.

摘介绍了深圳某基坑支护程钢管土钉与搅拌桩组合支护技术方案、设计、施及应用情况。

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理参数。

Safety effective of metal forepole support was analyzed in beam and bolting with wire mesh,problem and improvement was given safety effective was ensured.

针对金属前探支护在架棚及锚网支护巷道中安全作用进行了全面分析,提出了改进方案和存在问题,确保了金属前探支护安全作用。

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。

It is found that the rational located destressing boreholes can induce structural failure of the surrounding rock-mass,consequently the high stress move deeply in the rock-mass,and the stres...

在卸压孔和锚网联合支护后改善了围岩附近应力环境,改变了围岩破坏时空次序,对控制围岩变形和破坏具有突出优越.

Due to the complexity of occurrence condition and the polytropy of influencing factors,the excavation and supporting in soft failure roadway under high ground stress become very difficult.

高地应力破碎软岩巷道,由于赋存条件复杂和影响因素多变,使得该类巷道开挖与支护极为困难。