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

结跃进煤矿锚杆现状,探讨了锚杆参数优化设计的必性和重性。

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

超快硬夹心水泥卷锚杆是一种简单有效的锚杆。

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

论述了短锚杆群碎裂岩石中耙道的原理及实施效。

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

介绍了深圳某基坑程钢管土钉与搅拌桩组技术方案、设计、施及应用情况。

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

针对金属前探在架棚及锚网巷道中的安全作用进行了全面分析,提出了改进方案和存在问题,确保了金属前探的安全作用。

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

根据矿压观测结分析了可拉伸锚杆对软岩巷道的适应性及其理的结构参数。

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

给出巷道中测力锚杆的力学模型,指出测力锚杆实际应用中主承受拉力、扭矩作用。

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,由于赋存条件的复杂性和影响因素的多变性,使得该类巷道的开挖与极为困难。

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...

在卸压孔和锚网联后改善了围岩附近的应力环境,改变了围岩破坏的时空次序,对控制围岩变形和破坏具有突出的优越性.