基于红外辐射特征的砾岩水分湿润锋的演化与追踪

doi:10.13722/j.cnki.jrme.2019.0080

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Abstract According to the law of time and space evolution of moisture wetting front in rock medium，Infrared radiation characteristics of conglomerate from dry to saturated water absorption were monitored by infrared thermography. The distribution of moisture wetting front in time and space is analyzed by the theory of moisture wetting front identification：(1) As time progresses，the irregular wetting front gradually moves from the bottom of the sample to the top of the sample. Under the main action of adsorption force and capillary force，the rising speed decreases continuously until it approaches zero. (2) Due to the unevenness of the conglomerate material，in space，the moisture wet front presents an array of asymmetric convex curves from the bottom to the top of the sample. By comparing the results of theoretical calculation and visible light monitoring，it is shown that the spatial distribution curve of water wetting front of conglomerate can be obtained by using the theory of water wetting front identification at any time，and the evolution law of water wetting front in time and space can be further traced. This method can realize the purpose of non-destructive and real time tracking of moisture wetting front，and can provide a new monitoring method to solve the problems of water damage in civil engineering construction，ancient architecture maintenance，cultural relic protection and other fields.

Key words： rock mechanics infrared radiation characteristics moisture wetting fronts evolution regularity time spatial distribution

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	Articles by authors
	ZHANG Fang1
	2
	FU Chenggong1
	2
	FU Yingyu2
	WANG Zhenwei3
	TAO Zhigang1
	2
	LI Yingjun1
	2

Cite this article:

ZHANG Fang1,2,FU Chenggong1, et al. The evolution and tracking of moisture wetting fronts in conglomerate based on infrared radiation characteristics[J]. , 2019, 38(S2): 3545-3553.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2019.0080 OR https://rockmech.whrsm.ac.cn/EN/Y2019/V38/IS2/3545

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