期刊
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
卷 21, 期 12, 页码 2711-2718出版社
ELSEVIER
DOI: 10.1016/S1003-6326(11)61114-X
关键词
water; viscoelasto-plastic property; circular incremental step load and unload; generalized Kelvin model
资金
- National Natural Science Foundation of China [10972238]
- Thesis Innovation Funds for the Central South University, China [2009bsxt061]
- Hunan Administration of Work Safety Fund, China
Using a circular incremental step load and unload method, a set of rheological experiments were performed to study the viscoelasto-plastic properties of amphibolite in Jinchuan No. 2 diggings under different environments. Based on the scientific analysis on rheological experimental data, the viscoelasto-plastic properties of amphibolite under different environments were studied. The results show that the instantaneous elastic modulus and viscoplastic properties of amphibolite are affected little, the viscoelastic properties of amphibolite are significantly affected. Based on the experimental results and characteristics of recovered rock specimen, a generalized Kelvin model was chosen to simulate rheological properties of amphibolites and key parameters were obtained. It is found that the creep deformation modulus E-1 is significantly influenced by the water, while the instant elastic modulus E-2 is not significantly affected. The discreteness of the viscosity coefficient eta is large, the influence of water on eta is not clear and needs to be further studied.
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