Influence of Temperature and Shear Rate on Crack Evolution Mechanism at Resin Anchorage Interface
WANG Jiaqi
YAO Zhishu
LIU Xiaohu
XU Yongjie
FANG Yu
Abstract：In order to study the influence of temperature and shear rate on the crack evolution mechanism of resin anchorage interface,the shear test of the anchorage specimen was carried out by using a variable temperature shear test device.The fracture evolution mechanism and micro-failure characteristics of the shear interface were analyzed using the digital correlation technique(DIC)and scanning electron microscope(SEM).The results show that the peak shear stress at the interface between the anchor and anchoring agent decreases with the increase in temperature and shear rate.In the range of 36°-72°,with the increase of bolt rib angle,the peak shear stress of bolt-anchorage agent interface increases gradually.Temperature and shear rate have great effects on the fracture evolution of anchoring agent-rock specimens and the peak shear stress at the anchoring agent-rock interface.
Keywords：resin anchoring interfacehigh ground temperatureshear ratedigital correlation technologyfracture evolution mechanism
Publication Date：2025-04-30
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：10( 330-339 )