锚索桁架支护效果影响因素研究

Study on Influence Factors of Support Effect of Anchor Cable Truss

基于正交试验与层次分析法,以巷道顶板下沉量为指标,研究了锚索桁架支护效果的影响因素,定量确定了顶板下沉量随桁架跨度、锚索长度、锚索角度和偏心距的变化趋势。结果表明在一定范围内,桁架跨度是影响巷道顶板下沉量最大的因素,这对于提前采取预防措施,提高巷道围岩稳定性具有重要的指导意义。

Based on orthogonal test and analytic hierarchy process,the influence factors of support effect of anchor cable truss are studied by taking the roof subsidence of roadway as an index.The variation trend of roof subsidence with truss span,anchor cable length,anchor cable angle and eccentricity is quantitatively determined.The results show that in a certain range,the truss span is the most important factor affecting the roof subsidence.It has important guiding significance for taking preventive measures in advance and improving the stability of roadway surrounding rock.