【摘要】 为探究地下电缆混凝土隧道渗漏水红外辐射特征,采用定制的带有点状、线状、空鼓状缺陷的水泥试块进行模拟电缆隧道衬砌渗漏水的正交试验,通过改变缺陷形式、缺陷尺寸以及渗漏水流量等研究在不同影响因素下水泥试块渗漏处的红外辐射规律.经过后期的图像处理和面积提取,得到了三种不同缺陷形式下的渗漏红外图像特征及其随流量和缺陷尺寸的变化规律.试验结果表明:不同渗漏形式的试块在渗漏过程中呈现的渗漏形状特征也有所区别;在其他条件一定的情况下,渗漏区域的面积随渗漏水流量的增大呈一定的线性增大;在线状缺陷的试验工况下,缺陷尺寸的大小对渗漏水的面积影响不大.研究成果可为实际隧道检测渗漏水快速检测提供依据.更多还原

【Abstract】 To explore the characteristics of seepage defects in underground cable concrete tunnels, wesimulated water seepage on custom-made cement blocks with point-like,linear and hollow-like defects. Thisorthogonal test is aimed to explore the infrared radiation law of cement block leakage with the change of defectform,defect size and leakage flow rate. The features of infrared image and the variation rule influenced by flowrate and defect size were obtained through the later image processing and area extraction. The experimentalresults show that the seepage characteristics of the test specimens with different seepage patterns are different,and the leakage area increases linearly with the increase of the leakage water flow under certain otherconditions,however,the size of the defect has little effect on the area of the leaking water in the case of lineardefects. The study provides the basis for the rapid detection of leaking water in practical tunnel.更多还原