Compared comprehensively, enclosed supports are better than non-enclosed supports; supports of square annular shape or "u" shape are better than supports of semicircle arch.
综合比较来看,封闭式支架要优于不封闭支架;马蹄形或方环形支架要比半圆拱等支护形式好。
The equipment is mainly used for the shaping work of U-shaped steel arch support when it deforms, distorts or partial damages, to increase the number of profiles in the re-use.
该设备主要用于U型钢拱形支架使用后发生变形、扭曲或局部破损的整形工作,以增加型材的复用次数。
For rock roadway layout layer, the necessity and feasibility of using nude alley, a hell of arch, the U-steel shed, bolt net and spraying and other forms of support are expounded.
针对岩巷布置层位,阐述了采用裸巷、砌碹、u型钢棚、锚网喷等多种支护形式并存的必要性与可行性。
For rock roadway layout layer, the necessity and feasibility of using nude alley, a hell of arch, the U-steel shed, bolt net and spraying and other forms of support are expounded.
针对岩巷布置层位,阐述了采用裸巷、砌碹、u型钢棚、锚网喷等多种支护形式并存的必要性与可行性。
应用推荐