气候变化领域集成服务门户(CCPortal): Experimental Investigation of Saturation Effect on the Mechanical Behaviour of Château-Landon Chalk

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DOI	10.1007/s00603-024-03833-6
	Experimental Investigation of Saturation Effect on the Mechanical Behaviour of Château-Landon Chalk
	Pajiep, Danielle; Conil, Nathalie; Souley, Mountaka; Shao, Jian-Fu; Gombert, Philippe; Xie, Shou-Yi
发表日期	2024
ISSN	0723-2632
EISSN	1434-453X
英文摘要	Abandoned underground mines appear to be very sensitive to the variations in their environment. Due to seasonal environmental changes often related to climate and resulting in changes in the water table and hygrometry, the pillars are often subjected to cyclic variations of saturation. This could affect the short- and long-term stability of these abandoned structures. In this paper, a preliminary study on the behaviour of Chateau-Landon chalk has been carried out. Samples were extracted from pillars of the abandoned Royer chalk mine (Chateau-Landon, France). The mechanical behaviour of this chalk was then investigated by performing conventional hydrostatic, triaxial compression, and creep tests under drained conditions at different water saturation degrees and confining pressures. The obtained results show up fundamental aspects of this chalk behaviour. Its high sensitivity to water and confining pressure are described, and a water saturation-induced plastic deformation is analysed. The results presented in this paper provide some key mechanisms that can be used in the framework of back analysis and expertise in underground chalk mines, as well as the data required for the development of a specific constitutive model. Compression tests were performed on the Chateau-Landon chalk at different water saturation degrees (10%, 40%, 60%, 90%, 100%) and confining pressures (0.5, 1, 1.5, 2, 3 Mpa).An analysis of the creep behaviour of this material at a partial and total saturated state was shown.The variation of mechanical properties with water saturation degree and confining pressure was analysed.
英文关键词	Underground chalk mine; Climate change; Water saturation degree; Confining pressure; Mechanical behaviour
语种	英语
WOS研究方向	Engineering ; Geology
WOS类目	Engineering, Geological ; Geosciences, Multidisciplinary
WOS记录号	WOS:001194594400001
来源期刊	ROCK MECHANICS AND ROCK ENGINEERING
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/298113
作者单位	Institut National de l'Environnement Industriel et des Risques (INERIS); Institut National de l'Environnement Industriel et des Risques (INERIS); Centre National de la Recherche Scientifique (CNRS); Universite de Lille; Centrale Lille
推荐引用方式 GB/T 7714	Pajiep, Danielle,Conil, Nathalie,Souley, Mountaka,et al. Experimental Investigation of Saturation Effect on the Mechanical Behaviour of Château-Landon Chalk[J],2024.
APA	Pajiep, Danielle,Conil, Nathalie,Souley, Mountaka,Shao, Jian-Fu,Gombert, Philippe,&Xie, Shou-Yi.(2024).Experimental Investigation of Saturation Effect on the Mechanical Behaviour of Château-Landon Chalk.ROCK MECHANICS AND ROCK ENGINEERING.
MLA	Pajiep, Danielle,et al."Experimental Investigation of Saturation Effect on the Mechanical Behaviour of Château-Landon Chalk".ROCK MECHANICS AND ROCK ENGINEERING (2024).