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为了研究围岩稳定性影响因素及围岩内部形成的支护结构形式,采用相似模拟实验对锚杆的厚锚固板支护理论进行了研究,通过改变锚杆的间距和长度,分析了围岩应力变化及围岩变形规律,对厚锚固板支护理论的受力演化作用机理进行了探讨,将锚杆作用的力学本质概括为增大锚固体的内聚力、厚度,减小锚固体的等效跨度,改善锚固体的应力状态。
In order to study the influencing factors of surrounding rock stability and the form of supporting structure formed in the surrounding rock, a similar simulation experiment was carried out to study the bolting support theory of thick anchor plate. By changing the distance and length of the rock bolt, Stress variation and deformation law of surrounding rock, the mechanism of force evolution of thick anchor plate supporting theory is discussed. The mechanics essence of bolt action is summarized as increasing the cohesion and thickness of anchor and reducing the equivalent of anchor Span, improve the stress state of the anchor.