隧道施工紅外探水干擾分析與預(yù)防研究
[Abstract]:The accuracy of tunnel infrared water detection prediction is often affected by many factors. Through the principle analysis of infrared water detection, the field test was carried out on the entrance section of Xianghe tunnel in the vast railway capacity expansion and reconstruction project. According to each influencing factor, the detailed test was made, and the lamp source was analyzed and found. Initial shotcrete has the greatest impact on infrared detection. The fundamental reason for the interference is that the heat generated by the interference source changes the original ambient temperature. The main method of reducing interference is also discussed: 1) selecting the time period with the least interference source in detection) if the interference can not be avoided, the interference temperature field can be established according to the mark point of the highest temperature. The influence caused by interference can be eliminated obviously. (3) the detection should be kept on the central axis of the tunnel and the angle between the receiving hole and the measuring points of each line should be the same. Through the above methods, the accuracy of tunnel infrared water detection can be improved effectively.
【作者單位】: 中鐵十七局集團(tuán)第四工程有限公司;西南交通大學(xué)地球科學(xué)與環(huán)境工程學(xué)院;
【分類號】:U456.3
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