【作者】 勾攀峰； 李德海；

【Author】 Gou Panfeng,Li Dehai (Department of Resource and Materials Engineering,Jiaozuo Institute of Technology,Jiaozuo 454159 China)

【机构】 焦作工学院资源与材料工程系；

【摘要】 利用相似材料模拟试验,研究了回采巷道周边锚固体的变形破坏特征,指出锚固体的变形破坏属于脆性破坏,其变形破坏过程是在外载作用下锚固体内形成主破裂面,然后以破裂面的剪胀为主。并且锚固体在最终失去承载能力前,锚杆轴向及与之垂直方向的变形呈协调变化。锚杆被拉断可以看作锚固体完全失去承载能力。更多还原

【Abstract】 Based on the similitude material simulation tests,the paper studies the deformation and failure feature of bolted rock body in the surrounding rock around roadway.It points out that the deformation and failure of bolted rock body are due to fragility.The deformation and failure process is that the main fracture surface is formed within the bolted rock body with the help of an outer force,and the shear and expansion of the fracture surface becomes main.And the deformation of bolted rock body along and the deformation perpendicular to the axial direction of bolt assume harmonious change before the loss of load-carrying ability.The fact that the bolt is put out may be regarded as the result of the total loss of load-carrying ability of the bolted rock body.更多还原