This paper aims to investigate the long-term stability of the anchoring and supporting struc-tures for deep roadway surrounding rock in high-temperature environments.The experiment using the res-in anchoring materials as an example,studies its own strength and creep characteristics under different temperature environments through uniaxial compression tests,uniaxial creep tests,and creep correction models.The results indicate that the temperature has a significant impact on the compressive strength of resin anchoring agents,and the compressive strength generally decays linearly with temperature increas-ing,with a decay rate of 0.48 MPa/℃approximately.With the increase of temperature and stress level,the creep amount and creep rate of the resin anchoring agent gradually accelerate,and the creep failure threshold decreases.The revised generalized Kelvin creep model not only greatly overcomes the limita-tions of the original creep model in the loading stress range,but also can well describe and predict the creep characteristics and trends of resin anchoring agents under different temperatures and stress levels.SEM scanning performs that the higher the temperature,the more obvious the cracks inside the resin an-choring agent is.
关键词
树脂锚固剂/不同温度/单轴蠕变/修正广义开尔文蠕变模型
Key words
resin anchorage cartridge/different temperatures/uniaxial creep/modified generalized Kelvin creep model
维普
万方数据