Volume 37 Issue 6
Dec.  2023
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Liu Wende. Upper Bound Method (UBM) Analysis for the Motivation of Weak Interlayer Rockslides after Heavy Rainfall[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2023, 37(6): 676-680. doi: 10.3969/j.issn.1007-2993.2023.06.008
Citation: Liu Wende. Upper Bound Method (UBM) Analysis for the Motivation of Weak Interlayer Rockslides after Heavy Rainfall[J]. GEOTECHNICAL ENGINEERING TECHNIQUE, 2023, 37(6): 676-680. doi: 10.3969/j.issn.1007-2993.2023.06.008
shu

Upper Bound Method (UBM) Analysis for the Motivation of Weak Interlayer Rockslides after Heavy Rainfall

doi: 10.3969/j.issn.1007-2993.2023.06.008
  • 1.

    Sichuan Communication Surveying & Design Institute Co., Ltd., Chengdu 610017, Sichuan, China

  • 2.

    State Key Laboratory of Geohazards Prevention and Geoenviroment Protection, Chengdu University of Technology, Chengdu 610059, Sichuan, China

  • Received Date: 2022-01-05
  • Accepted Date: 2022-08-25
  • Rev Recd Date: 2022-02-16
  • Publish Date: 2023-12-08
    Abstract
  • The stability of bedding rock slope with interlayer under heavy rainfall was analyzed by combining the theory of rock fracture mechanics and the upper limit theorem, and the propagation criteria of rock crack under hydrostatic pressure and water-filled crack was obtained. Based on the upper limit theorem, the upper limit solution for the stability evaluation of bedding rock slope with interlayer is obtained, and the effects of the change of water filling depth of cracks at the back edge of landslide, immersion length of sliding surface, and shear parameters of sliding surface on the start-up and stability of landslide are discussed. An example shows that there is a critical depth for the crack at the trailing edge of the rock slope to expand to the interlayer. The influence of the change of the immersion length and shear parameters of the sliding surface on the stability of the slope is discussed when the water-filling depth of the crack is greater than the critical depth.

     

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