Journal
AUTOMATION IN CONSTRUCTION
Volume 123, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.autcon.2020.103526
Keywords
Water inflow segmentation; Automatic quantification; Rock tunnel face; Convolutional neural network; Human inspection process
Funding
- Key innovation team program of innovation talents promotion plan by MOST of China [2016RA4059]
- Natural Science Foundation Committee Program of China [51778474]
- Science and Technology Project of Yunnan Provincial Transportation Department [25]
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The paper presents a novel convolutional neural network-based method for evaluating water inflow in rock tunnel faces, which achieves accurate quantification through classification and segmentation steps. Experimental results demonstrate excellent performance in terms of speed, accuracy, and segmentation capability.
Quantifying water inflow information from rock tunnel faces is critical for field engineers to assess the rock mass rating and subsequently make appropriate construction management decisions. This paper proposes a novel convolutional neural network (CNN)-based water inflow evaluation method that emulates a typical field engineer's inspection process. It is integrated by a classification step and a semantic segmentation step: the first one is to classify the non-damaged regions and the damaged regions; and the second one is to segment the detailed water inflow damage to the rock tunnel faces. An image database of water inflow in rock tunnel faces was applied for comprehensive training, validation and testing. The experiments on the testing data demonstrate an ideal performance in terms of convergence speed and classification accuracy, as well as quantitative water inflow segmentation. The proposed automatic quantification approach significantly reduces the ergodic damage segmentation procedure through the early exclusion of undamaged samples during the classification process.
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