温度与荷载作用下岩石损伤模型

doi:10.13722/j.cnki.jrme.2014.s2.001

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Abstract The interior defect is random distribution in rock. The damage model of rock under coupling action of temperature and load was established by the damage mechanical theory，and the model parameters were determined. The evolutionary route of rock macro-mechanical properties induced by micro-structural damage was analyzed. The deformation and failure laws of rock were predicted and the rationality of damage model was verified. It is shown that the total damage evolutionary route under temperature and load coupling action reflects the whole process of closure，initiation，propagation and coalescence of microcrack in rock，and then the appearance of macroscopic crack and the disruption of rock. Under high temperature，the rock damage intensifies， which is displayed on the deterioration of the mechanical properties of rock on the macro level. With increasing of the confining pressure，the damage degree and deterioration decrease and the strain increases for the same extent of damage，which is manifested on the enhanced ability to resist destruction and the increased plastic deformation in macroscopic view.

Key words： rock mechanics damage temperature-load coupling mechanical properties

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	Articles by authors
	ZHANG Huimei1
	LEI Lina1
	YANG Gengshe2

Cite this article:

ZHANG Huimei1,LEI Lina1,YANG Gengshe2. DAMAGE MODEL OF ROCK UNDER TEMPERATURE AND LOAD[J]. , 2014, 33(S2): 3391-3396.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2014.s2.001 OR https://rockmech.whrsm.ac.cn/EN/Y2014/V33/IS2/3391

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