岩石节理面应力–渗流耦合剪切流变试验系统的研制与应用

doi:10.13722/j.cnki.jrme.2021.0467

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Abstract In order to study the hydro-mechanical coupled shear rheological mechanisms of rock joints，a hydro-mechanical coupled shear rheological testing system for rock joints was independently developed. The test system is equipped with a specially designed shear box device，which can ensure that the maximum water pressure of 5 MPa can be provided in the process of shear test. The wrapping of the rubber sleeve around the specimen under the action of the confining pressure，and the combination of active and passive loadings are adopted to meet the tight fit between the circular indenter and the cubic rock sample to ensure that there is no leakage during shear test. Shear displacement can be produced in both directions simultaneously. Shear rheological test of joints can be carried out under servo control of constant normal stress(CNL) and constant normal displacement(CNV). Dynamic permeability of rock joints under different shear conditions can be conducted. Furthermore，hydro-mechanical coupled shear rheological test of structural planes under different hydraulic gradients and water pressures can be carried out. The accuracy and reliability of the system are verified by various tests of granite with different joint faces under different boundary conditions of hydraulic gradient and hydraulic pressure. The testing system provides a support for the study of hydro-mechanical coupled shear creep properties of rock joint，and has a certain guiding role in enriching and improving the theoretical study of rheological properties of rock joints.

Key words： rock mechanics rock joints hydro-mechanical coupling shear rheological

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	Articles by authors
	CHEN Weizhong1
	SUI Qun1
	2
	WANG Luyu1
	2
	XIE Peiyao1
	2
	TIAN Yun1
	2

Cite this article:

CHEN Weizhong1,SUI Qun1,2, et al. Development and application of a hydro-mechanical coupling shear creep testing machine for rock joints[J]. , 2021, 40(9): 1729-1738.

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https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2021.0467 OR https://rockmech.whrsm.ac.cn/EN/Y2021/V40/I9/1729

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