从理论上分析了桁架锚杆系统的作用机理，并针对“三软”全煤巷道的特点，制定了全煤顺槽桁架支护方案。
This paper theoretically analyzes the mechanism of truss bolt system, and gives the design of coal roadway support according to the characteristics of the "Three-soft" coal roadway.
吊挂-代表了桁架及桁架系统，灯杆，悬挂框架，灯桥。
Flying - which represents the product groups trusses and trussing, Pipe battens, Air frames, Lighting Bridges.
吊挂-代表了桁架及桁架系统，灯杆，悬挂框架，灯桥。
Flying - which represents the product groups trusses and trussing, Pipe battens, Air frames, Lighting Bridges.
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