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contributor authorJiawang Hao
contributor authorLan Qiao
contributor authorZhanjin Li
contributor authorQingwen Li
date accessioned2022-05-07T20:10:41Z
date available2022-05-07T20:10:41Z
date issued2022-02-23
identifier other(ASCE)MT.1943-5533.0004202.pdf
identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4282079
description abstractTo predict the fractured rock failure under deep triaxial stress, true triaxial tests were carried out using thermal infrared monitoring and acoustic emissions (AE). Based on the thermal infrared imagery, which may hold potential information for predicting rock failure, this paper proposes the infrared temperature jumping rate (ITJR) to reflect the jumpiness of the temperature field matrix and establishes an infrared advance prediction method. The results show that the high-temperature area will converge and expand gradually, and cracks propagate along a certain direction. In the sudden-temperature-reduction area, rock stripping is easy to occur. At the boundary between high- and low-temperature areas, it is easy to produce breakage cracks and form rock spalling. In the short quiet period, the rock gradually gathers strain energy, which will be released in the fracture period. By comparing the time of AE sudden increase with the time of ITJR mutation, it shows that the method has a good advance prediction effect for rock fracture.
publisherASCE
titleAnalysis on Rock Fracture Signals and Exploration of Infrared Advance Prediction under True Triaxial Loading
typeJournal Paper
journal volume34
journal issue5
journal titleJournal of Materials in Civil Engineering
identifier doi10.1061/(ASCE)MT.1943-5533.0004202
journal fristpage04022058
journal lastpage04022058-15
page15
treeJournal of Materials in Civil Engineering:;2022:;Volume ( 034 ):;issue: 005
contenttypeFulltext


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