Investigation of structures in tunnel overburdens by means of muon radiography
Investigation of structures in tunnel overburdens by means of muon radiography
复制标题
利用μ子射线照相技术研究隧道覆盖层中的结构
DOI：
10.1088/1748-0221/17/05/p05029
复制
发表时间：
2022-05
影响因子：
1.3
通讯作者：
X. Ouyang
中科院分区：
文献类型：
--
作者：
J. Li;Z. Li;R. Han;Y. Cheng;X. Mao;L. Yu;X. Feng;B. Liu;L. Jiang;X. Ouyang
摘要宇宙线μ子照相是一种新的成像技术，用于研究大型天体和浅地壳的密度结构。例如，它已被用于调查活火山的岩浆管道，隧道上方的洞穴和金字塔内的隐藏室，并已被证明是有效和准确的。然而，低宇宙μ子通量限制了μ子照相在许多工程应用中的发展。本文讨论了μ子射线照相在隧道覆盖层密度异常研究中的潜在应用。结果表明，在典型的25 m厚覆盖层中，μ子射线照相在2 h内可以识别10%的覆盖层异常，由于缺乏足够的统计数据，其不准确率为30.8%，如果收集一整天的数据，其不准确率将降低到2.2%。该研究还表明，μ子射线照相术可以检测到结构密度异常超过1%，误差概率为2.2%。宇宙射线μ子成像作为一种无损、无创、无源的成像方法，在对覆盖层结构进行及时监测和成像以发现潜在的结构缺陷方面具有巨大的潜力。
Abstract Cosmic ray muon radiography is a new imaging technique that is being used to investigate the density structure of large objects and the shallow crust. For example, it has been used to investigate magma conduits of active volcanoes, cavities above tunnels and hidden chambers inside pyramids, and has proven to be effective and accurate. However, low cosmic muon flux has limited the development of muon radiography in many engineering applications. In this paper, the potential application of muon radiography to investigate density anomalies in tunnel overburden is discussed. Results show that in a typical 25-meter thick overburden, muon radiography can identify overburden anomalies of 10% in two hours with an inaccuracy probability of 30.8% by lack of enough statistics, and this inaccuracy will reduce to 2.2% if data are collected over a full day. The study also indicates that muon radiography can detect structure density anomalies above 1% with an inaccuracy probability of 2.2%. As a non-destructive, non-invasive and passive imaging method, cosmic ray muon radiography has its great potential in timely monitoring and imaging of overburden structures to discover potential structural defects.
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通讯作者：
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