›› 2012, Vol. 33 ›› Issue (S2): 37-0045.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

Study of mechanism of washing process of rock-salt cavern under coupled mechanical-dissolving effect

TANG Yan-chun1,3, ZHOU Hui2, XU Mo1   

  1. 1. State Key Laboratory of Geohazard Prevention and Geoenvironment Protection, Chengdu University of Technology, Chengdu 610059, China; 2. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China; 3. College of Civil Engineering and Architecture, China Three Gorges University, Yichang, Hubei 443002, China
  • Received:2011-11-15 Online:2012-11-22 Published:2012-12-11

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Abstract: Through analyzing the influence for washing process of rock-salt cavern with coupled mechanical-dissolving effect, mechanism of washing process of rock-salt cavern under coupled mechanical-dissolving effect has been studied. The research results show that during the washing process, influence for rock-salt cavern shape by coupled mechanical-dissolving effect can not be ignored. The mechanism of washing process of rock-salt cavern under coupled mechanical-dissolving effect is that because of dissolving effect the mechanical properties of wall rock of rock-salt cavern within the scope of influence by water has been changed; and then because of the variation for the mechanical properties of the boundary of wall rock, the dissolving process in the interior of rock-salt cavern has been changed; so that the variation for the shape of rock-salt cavern has occurred. According to the mechanism of washing process of rock-salt cavern under coupled mechanical-dissolving effect, the computing method of washing process of rock-salt cavern under coupled mechanical-dissolving effect has been built. Based on the established computing method, by computing program of rock-salt cavern shape under coupled mechanical-dissolving effect and FLAC software the washing process of rock-salt cavern has been computed. the computing results show that compared with the computing shape of rock-salt cavern under dissolving effect, the computing shape of rock-salt cavern under mechanical-dissolving effect more coincided with the actual shape of rock-salt cavern. The results can provide a foundation for further analysis of the mechanism of washing process of rock-salt cavern.

Key words: rock-salt cavern, coupled mechanical-dissolving effect, washing process

CLC Number: 

  • TU 443
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