Volume 45 Issue 2
Apr.  2017
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ZHONG Yuyi, SU Hai, PAN Huangsong. Deformation characteristics and mechanism of an excavation slope in red bed area of Chengren highway[J]. COAL GEOLOGY & EXPLORATION, 2017, 45(2): 96-100. DOI: 10.3969/j.issn.1001-1986.2017.02.017
Citation: ZHONG Yuyi, SU Hai, PAN Huangsong. Deformation characteristics and mechanism of an excavation slope in red bed area of Chengren highway[J]. COAL GEOLOGY & EXPLORATION, 2017, 45(2): 96-100. DOI: 10.3969/j.issn.1001-1986.2017.02.017
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Deformation characteristics and mechanism of an excavation slope in red bed area of Chengren highway

  • 1. State Key Laboratory of Geohazard Prevention and Geoenvironment Protection(Chengdu University of Technology), Chengdu 610059, China;

  • 2. Sichuan Shutong Geotechnical Engineering Company, Chengdu 610018, China

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  • Received Date: January 04, 2016
  • Published Date: April 24, 2017
    Graphical Abstract
    • Abstract
  • The special engineering properties of the red beds which distribute extensively in Sichuan basin often result in serious geological disasters. Through the characteristic analysis of deformation and destruction of the slope in the connection line between Wengong town and Chengren Highway, failure mechanism of the slope under the influence of excavation and precipitation is concluded as creep-sliding and fracturing. Further by FLAC3D numerical analysis, the deformation and failure mechanism of slope were verified. The results point out that cracking damage at the trailing edge as well as the shear slip failure at the front of landslide were caused by the excavation unloading and rainfall. For this type of slope, reinforcement measures should be taken in time in the part above the cutting slope after excavation to prevent rainfall infiltration from softening the soil and intensifying deformation and failure of the landslide.
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    • References (12)
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