›› 2010, Vol. 31 ›› Issue (6): 1943-1949.

• Numerical Analysis • Previous Articles     Next Articles

Numerical simulation of rheological properties of rocks in seepage field

YAN Yan1，WANG En-zhi1，WANG Si-jing1, 2   

  1. 1. State Key Laboratory of Hydroscience and Engineering, Tsinghua University, Beijing 100084, China; 2. Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China
  • Received:2008-04-10 Online:2010-06-10 Published:2010-06-25

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Abstract:

Seepage field has notable influence on rheological properties of rocks; but the related experiment is difficult to achieve because of the limit of test equipment or method. Numerical calculation has been an important method in rock mechanics gradually; in this paper, rheological properties of rocks in seepage field are studied by numerical simulation. First of all, a simulation of an available example is carried out to validate this method. Then, several compression rheological experiments of rock in unidirectional and tridirectional seepage fields are simulated. Based on the simulation results, the dynamic hydraulic force which developed in seepage process will increase the strain of rock specimen in seepage direction. Furthermore, the simulation results show that the axial seepage force in tridirectional seepage field is less than that in unidirectional seepage field; but the lateral seepage force in tridirectional seepage field is larger than that in unidirectional seepage field. Accordingly, the axial and lateral strains have similar regularity.

Key words: rock rheology, numerical simulation, unidirectional seepage field, tridirectional seepage field

CLC Number: 

  • O 343
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