灰岩岩样等幅和分级循环加卸载过程中电阻率响应规律研究

doi:10.13722/j.cnki.jrme.2014.1718

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Abstract

Constant amplitude cyclic loading and unloading and tiered cyclic loading and unloading have some same rules. The difference is that when complete unloaded(loading is 0 kN) and fully loaded(loading is 35 kN in the first level of fully loading) at the first three cycles the resistivity is uccessive to decrease, while at the latter two cycles increases slightly. In the process of destructiveness loading，it also exists a fast falling period at the beginning of loading. An explanation for resistivity change rule of the two process of cyclic loading at same time by using mechanism of microfissuring closure under cyclic loading is given. Experimental research shows that rock resistivity change can provide a good characterization to microfissuring development situation in rock in the process of constant amplitude cyclic loading and unloading and tiered cyclic loading and unloading.

Key words： rock mechanics constant amplitude cyclic loading and unloading tiered cyclic loading and unloading resistivity

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	Articles by authors
	SONG Jie
	LI Shucai
	LIU Bin
	YANG Lei
	XU Xinji
	NIE Lichao
	LI Ming
	MEI Jie

Cite this article:

SONG Jie,LI Shucai,LIU Bin, et al. STUDY ON RESISTIVITY RESPONSE LAW OF LIMESTONE IN PROCESSES OF CONSTANT AMPLITUDE AND TIERED CYCLIC LOADING AND UNLOADING[J]. , 2015, 34(S2): 3880-3887.

URL:

https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2014.1718 OR https://rockmech.whrsm.ac.cn/EN/Y2015/V34/IS2/3880

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