论文部分内容阅读
应用红外热像技术分别对不同类型的锚固体加载变形破坏过程进行了试验研究。试验结果表明,对于中心位置布置单根锚杆的锚固体:应力峰值前,随着荷载的增加,红外温度场呈现整体均匀性升温变化;应力峰值以后,在锚杆周围形成一个由多条不同等温线组成的区域,其形状是以锚杆为中心的近似圆形区域,由内向外温度逐步降低。有锚杆一侧围岩红外温度高于无锚杆一侧,锚杆周围形成一个近似“喇叭”状的等温线图;高温等温线对应高应力区,低温等温线对应低应力区;红外温度场与应力场的空间分布存在对应关系。
The application of infrared thermography technology to different types of anchoring load deformation and failure process were studied. The experimental results show that for the anchor with single anchor rod placed at the center position: before the stress peak, the temperature distribution of the infrared shows a uniform change in temperature with increasing load; after the stress peak, Isothermal composition of the area, the shape of the bolt as the center of the approximate circular area, gradually decrease the temperature from the inside out. One side of the rock bolt with the rock near the infrared temperature is higher than the anchor side of the bolt to form a similar “horn ” isothermal map; high temperature isotherm corresponds to high stress area, low temperature isotherm corresponds to the low stress area; There is a corresponding relationship between the infrared temperature field and the spatial distribution of stress field.