Title:
ROCK CREEP MODEL VISCOELASTICITY PARAMETER ACQUISITION METHOD BASED ON DEFORMATION MODULUS
Document Type and Number:
WIPO Patent Application WO/2023/197824
Kind Code:
A1
Abstract:
A rock creep model viscoelasticity parameter acquisition method based on a deformation modulus, which comprises the following steps: performing a triaxial compression test under different confining pressures to obtain the strength and the deformation modulus of a rock under different confining pressures; performing a creep test on the rock under different confining pressures by using a graded loading approach; and obtaining, according to a given confining pressure and an established confining pressure-deformation modulus relationship and confining pressure-long-term strength relationship, a deformation modulus and long-term strength under the confining pressure value, and then obtaining, in conjunction with the relationship between the viscoelasticity parameter of an established Burgers creep model and the deformation modulus, a viscoelasticity parameter and a creep-time curve of the model. The method only requires rock creep test data under a small number of confining pressures to establish a parameter-deformation modulus relationship of the creep model can be established, and only requires the deformation modulus of the rock under a certain confining pressure to obtain the creep model parameters under the confining pressure and long-term strength and a test curve reflecting the full accelerating creep process of a material, thereby providing a way to study the creep rupture behavior of the material.
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Inventors:
GU QINGHENG (CN)
ZHAO GUANGMING (CN)
CHEN LEILEI (CN)
SUN JIAN (CN)
TANG JINGZHOU (CN)
ZHANG RUOFEI (CN)
LIU ZHIXI (CN)
ZHAO GUANGMING (CN)
CHEN LEILEI (CN)
SUN JIAN (CN)
TANG JINGZHOU (CN)
ZHANG RUOFEI (CN)
LIU ZHIXI (CN)
Application Number:
PCT/CN2023/082097
Publication Date:
October 19, 2023
Filing Date:
March 17, 2023
Export Citation:
Assignee:
UNIV ANHUI SCI & TECHNOLOGY (CN)
International Classes:
G01N3/08
Foreign References:
| CN114894616A | 2022-08-12 | |||
| CN110631908A | 2019-12-31 | |||
| CN104915574A | 2015-09-16 | |||
| CN108152137A | 2018-06-12 | |||
| CN109060549A | 2018-12-21 | |||
| JP2008209262A | 2008-09-11 | |||
| SU1479846A1 | 1989-05-15 |
Other References:
XU DUO, WU SHIYONG, ZHANG RU, ZHANG ZETIAN, ZHOU JIFANG, DENG JIANHUI, REN LI, WU FEI: "Creep characteristics and creep model of deep buried marble at Jinping underground laboratory", JOURNAL OF CHINA COAL SOCIETY, vol. 44, no. 5, 1 May 2019 (2019-05-01), pages 1456 - 1464, XP093100070, ISSN: 0253-9993, DOI: 10.13225/j.cnki.jccs.2019.6012
"Master's Thesis", 1 December 2013, LIAONING UNIVERSITY OF ENGINEERING AND TECHNOLOGY, China, article CHEN, LONG: "Experiment on the Creep Starting Stress and Long-term Strength of Granite", pages: 1 - 91, XP009549627
"Master's Thesis", 1 December 2013, LIAONING UNIVERSITY OF ENGINEERING AND TECHNOLOGY, China, article CHEN, LONG: "Experiment on the Creep Starting Stress and Long-term Strength of Granite", pages: 1 - 91, XP009549627
Attorney, Agent or Firm:
QINGDAO JINJIA PATENT AGENCY (GENERAL PARTNERSHIP) (CN)
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