Thermal-hydro-mechanical coupling damage model of brittle rock
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- 作者：Peng Li (1)
Qiu-hua Rao (1)
Zhuo Li (1)
Wen-bo Ma (1)
Bin Ma (1) - 关键词：damage model ; THM coupling mechanism ; permeability test ; THM coupling test ; brittle rock
- 刊名：Journal of Central South University
- 出版年：2014
- 出版时间：March 2014
- 年：2014
- 卷：21
- 期：3
- 页码：1136-1141
- 全文大小：630 KB
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Qiu-hua Rao (1)
Zhuo Li (1)
Wen-bo Ma (1)
Bin Ma (1)
1. School of Civil Engineering, Central South University, Changsha, 410075, China - ISSN：2227-5223
文摘
Based on fluid mechanics, thermodynamics and damage mechanics, thermal-hydro-mechanical (THM) coupling damage model of brittle rock is established by analyzing THM coupling mechanism, where THM coupling damage variable D THM is dominated by TH coupling damage variable D TH, TM coupling damage variable D TM and HM coupling damage variable D HM, and D TH is firstly expressed in term of dimensionless total thermal conductivity of the water Nu. Permeability test, uni-axial compression test and THM coupling test are conducted to measure the permeability, elastic modulus and THM coupling stress-strain curves of brittle rock. The tested values of THM coupling elastic modulus E THM-are in good agreement with the predicted values of THM coupling elastic modulus E THM, which can verify the newly established THM coupling damage model.