摘要
为了研究不同锚杆参数对锚固系统稳定性的影响,采用理论分析和数值模拟相结合的方法,理论分析了围岩协同锚固系统力学模型和锚杆锚固段的“大托盘”效应,数值模拟了不同锚杆长度、锚杆密度和锚杆预紧力下群锚杆最小主应力分布,分析了锚杆围岩形成的挤压带范围,得到了相关参数对锚固系统稳定性的影响。研究为巷道支护提供了理论指导。
In order to study the influence of different bolt parameters on the stability of the anchoring system,the combination of theoretical analysis and numerical simulation is used to theoretically analyze the mechanical model of the surrounding rock cooperative anchoring system and the"big pallet"effect of the bolt anchoring section,the minimum principal stress distribution of group anchors under different bolt lengths,bolt density and bolt preloading force is analyzed,the range of compression zone formed by surrounding rock of anchor is analyzed,and the influence of relevant parameters on the stability of anchoring system is obtained.The study provides theoretical guidance for roadway support.
作者
卢宏亮
Lu Hongliang(Fengyu Coal Industry Co.,Ltd.,Huozhou Coal and Electricity Group,Huozhou 031400,China)
出处
《能源与环保》
2019年第12期158-161,共4页
CHINA ENERGY AND ENVIRONMENTAL PROTECTION
