It is verified that roof bolt broken problem may be solved with new type's thick tail bolt.
证明了新型粗尾锚杆可以解决顶板锚杆破断问题。
The paper makes an analysis of the stresses on split-set roof bolt, and gives results of in-situ tests.
本文对管缝式锚杆进行了受力分析，并介绍了现场试验研究结果。
There are many kinds of strata in roof bolt hole. Proper using and choosing are available for increasing comprehensive benefit.
锚杆钻孔所遇岩层种类较多，合理地选择锚杆钻头类型有利于提高综合效益。
The paper discussed the other parts in the high strength roof bolt support system, including the resin, combined parts and anchor.
论述了高强度锚杆支护系统中的其它构件，包括树脂锚固剂、组合构件和锚索。
When constructing on super section lane, combining roof bolt, anchor cable, anchor cable series, is scientific and reasonable, can achieve good effect.
超大断面巷道施工，采用锚杆、锚索、锚索组联合支护，科学合理，实现了安全高效的良好效果。
The utility model discloses a roof bolt disassembling machine, including an air leg part, a pneumatic wrench and a sleeve, the lower end of the pneumatic wrench is provided with a flange;
本实用新型公开了一种顶板锚杆拆卸机，包括有气腿部件、气动扳手和套筒，所 述气动扳手下端设有法兰盘；
A mathematical model of a metal detector is established based on the principles of eddy current detection, which provide a theoretical criterion for selection of parameters of roof bolt detector.
依据电涡流式探测原理，建立了金属探测的数学模型，为锚杆探测仪参数的选择提供了理论依据。
In this paper, the authors introduce the kinds and characteristics of roof bolt diamond bits, and using and choosing methods. They put forward points for attention of using roof bolt diamond bits.
本文介绍了金刚石锚杆钻头的类型、特点及选择方法，并给出了使用金刚石锚杆钻头的注意事项。
This paper introduces the construction process, common problems and measures of rock roof-bolt.
本文简要介绍了岩石锚杆基础的施工工序、常见问题和对策等。
The paper introduces an adjustable compounding light-duty emulsion pump station used for temporary fore support at the roof-bolt face of underground heading roadway.
本文介绍煤矿井下掘进巷道锚杆支护工作面用于临时超前支护的一种可调配比式轻型乳化液泵站。
The paper introduces an adjustable compounding light-duty emulsion pump station used for temporary fore support at the roof-bolt face of underground heading roadway.
本文介绍煤矿井下掘进巷道锚杆支护工作面用于临时超前支护的一种可调配比式轻型乳化液泵站。
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