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Volume 34 Issue 7
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JIANG Ming-jing, LI Li-qing, LIU Fang, SU Jia-xing. Deformation behaviors of TJ-1 lunar soil simulant during excavation[J]. Chinese Journal of Geotechnical Engineering, 2012, 34(7): 1176-1183.
Citation: JIANG Ming-jing, LI Li-qing, LIU Fang, SU Jia-xing. Deformation behaviors of TJ-1 lunar soil simulant during excavation[J]. Chinese Journal of Geotechnical Engineering, 2012, 34(7): 1176-1183.
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Deformation behaviors of TJ-1 lunar soil simulant during excavation

  • (1. Key Laboratory of Geotechnical and Underground Engineering of the Ministry of Education, Shanghai 200092, China; 2. Dept. of Geotechnical Engineering, Tongji University, Shanghai 200092, China)

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  • Received Date: August 09, 2011
  • Published Date: July 24, 2012
    Graphical Abstract
    • Abstract
  • Torsion shear tests are conducted by use of a dynamic hollow cylinder apparatus in Tongji University on the TJ-1 lunar soil simulant subjected to stress paths of excavation in order to investigate its deformation behaviors and non-coaxiality during the excavation under the earth environment. The test results indicate that (1) the stress path significantly affects the deformation behaviors of the TJ-1 lunar soil simulant; (2) the soils at the bottom of the pit and outside the diaphragm walls fail due to large deformation; (3) the soils at the bottom exhibit a tendency of contraction; (4) the soils adjacent to the diaphragm walls show remarkable non-coaxiality due to the coupled effects of stress ratio, rotation amplitude and rotation rate of the principal stress; and (5) the non-coaxiality of soils at the bottom of the pit is mainly affected by the rotation amplitude and rotation rate of the principal stress direction, while the non-coaxiality of soils outside the wall is controlled by the stress ratio, rotation amplitude and rotation rate of the principal stress direction.
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    • References (20)
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