隧道裂损衬砌渗漏水红外特征识别试验研究

Experimental study on infrared characteristic recognition for water leakage of tunnel cracked lining

为探讨隧道裂损形式和衬砌渗漏水速度对渗漏水红外特征的影响,研发了可模拟隧道运营湿度、温度和照度环境的试验装置,对渗漏水红外特征进行了系统研究.研究结果表明:缺陷形式对渗漏水区几何分布(尤其是出水孔附近)有重要影响,随着渗漏速度的增加,缺陷形式对渗漏水区几何形态的控制作用有所降低;通过渗漏水高温区等温线的几何形状和质心距离函数曲线,可以初步确定出水口的几何形态和空间位置;不同缺陷形式下渗漏水区域的面积均大致随着渗漏水速度呈线性增长趋势.该研究结论为隧道渗漏水红外检测技术中的病害判别标准和快速识别方法提供了理论依据.

To investigate the influence of crack damage form and leakage speed on the infrared characteristics of tunnel lining leakage,a test device was developed to simulate the humidity,temperature and illumination environment of tunnel,and the infrared characteristics of tunnel leakage were systematically studied.The experimental results show that the defect form has an important influence on the geometric distribution of the seepage zone(especially near outlet hole).With the increase of the leakage rate,the control effect of the defect form on the geometric form of the seepage zone will decrease.The geometric shape and spatial position of the water outlet can be preliminarily determined by the geometric shape and the centroid function curve of the isotherm in the high temperature zone of the water leakage.In general,the areas of water leakage for different defect forms increase linearly with the water leakage rate.The conclusions provide a theoretical basis for the disease identification standard and rapid identification method in the infrared detection technology of tunnel water leakage.