隧道施工红外探水干扰分析与预防研究
发布时间：2018-08-19 18:39
【摘要】：隧道红外探水预报受多种因素的干扰,其准确性往往受到影响。通过红外探水的原理分析,对广大铁路扩能改造工程祥和隧道进口段进行现场试验,针对每一项影响因素做详细的试验测试,分析发现灯源、初喷混凝土对红外探测造成的影响最大,产生干扰的根本原因是干扰源产生的热量改变了原来的环境温度,并探讨了减小干扰的主要方法:1)探测时选择干扰源最少的时间段;2)若干扰无法避免,可按最高温度为标志点建立干扰温度场,即可明显排除干扰产生的影响;3)探测时应保持在隧道中轴线上,保持接收孔与每一条测线各测点夹角相同。通过以上方法,可以有效提高隧道红外探水的准确性。
[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.
【作者单位】： 中铁十七局集团第四工程有限公司;西南交通大学地球科学与环境工程学院;
【分类号】：U456.3
本文编号：2192489
[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.
【作者单位】： 中铁十七局集团第四工程有限公司;西南交通大学地球科学与环境工程学院;
【分类号】：U456.3
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