温度和剪切速率对树脂锚固界面裂隙演化机制的影响  

Influence of Temperature and Shear Rate on Crack Evolution Mechanism at Resin Anchorage Interface

作　　者：王佳奇 姚直书[1] 刘小虎 许永杰 方玉 WANG Jiaqi;YAO Zhishu;LIU Xiaohu;XU Yongjie;FANG Yu(School of Civil Engineering and Architecture,Anhui University of Science and Technology,Huainan 232001,China)

机构地区：[1]安徽理工大学土木建筑学院,安徽淮南232001

出　　处：《建筑材料学报》2025年第4期330-339,共10页Journal of Building Materials

基　　金：国家自然科学基金资助项目(52174104,51674006);安徽理工大学引进人才基金项目(13210028);研究生创新基金(2024cx1003)。

摘　　要：为研究温度和剪切速率对树脂锚固界面裂隙演化机制的影响,利用变温剪切试验装置对锚固试件进行剪切试验,并利用数字图像相关法(DIC)和扫描电镜(SEM)分析了剪切界面裂隙的演化规律和微观破坏特征.结果表明:锚杆-锚固剂界面的峰值剪应力随着温度和剪切速率的增大而减小;在36°~72°范围内,随着锚杆肋角的增大,锚杆-锚固剂界面的峰值剪应力逐渐增大;温度和剪切速率对锚固剂-岩石试件的裂隙演化和锚固剂-岩石界面的峰值剪应力均有较大影响.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.

关 键 词：树脂锚固界面 高地温 剪切速率 数字相关技术 裂隙演化机制 

分 类 号：TD353[矿业工程—矿井建设]