Experimental study on failure mechanism of arch locked segment landslides

Liu, Handong; Guo, Zhifei; Chen, Jiaxing

doi:10.1007/s12517-021-08968-2

Cited by 1 publication

(2 citation statements)

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“…Relevant studies have shown that the locked segment is of low brittleness 39 . Based upon the existing studies of locked-segment type landslides 40 , 41 , water, gypsum, and sand were selected to simulate the retaining-wall type locked segment with a mass ratio of 1:1.4:1. According to the same ratio of the cylindrical sample, using YAW6206 electro-hydraulic servo press to carry out a uniaxial compression test, the uniaxial compressive strength was 3.27 MPa.…”

Section: Methodsmentioning

confidence: 99%

“…Huang 4 and Xu et al 5 investigated typical large-scale catastrophic landslides in China and reported that the landslide stability was controlled by an internal unconnected locked segment that can withstand concentrated stress. As typical landslides, relevant scholars have extensively studied locked-segment type landslides [6][7][8][9] . The instability mechanism of various locked-segment type landslides varies.…”

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Experimental study on tilting deformation and a new method for landslide prediction with retaining-wall locked segment

Liu

Chen

et al. 2023

Sci Rep

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The destruction of the locked-segment type landslide is often accompanied by the destruction of the locked segment with cumulative effects. Investigating the failure mode and instability mechanism of locked-segment type landslides is crucial. The study uses physical models to examine the evolution of locked-segment type landslides with retaining-walls. It utilizes a variety of instruments (tilt sensors, micro earth pressure sensors, pore water pressure sensors, strain gauges, and others) to conduct physical model tests of locked-segment type landslide with retaining-wall and to reveal the tilting deformation and evolution mechanism of retaining-wall locked landslide under the condition of rainfall. The results showed that the regularity of tilting rate, tilting acceleration, strain, and stress change in the retaining-wall locked segment is consistent with the landslide evolution process, indicating that tilting deformation can be used as the criterion of landslide instability and that the locked segment plays a vital role in controlling the landslide stability. The tertiary creep stages of tilting deformation are divided into initial, medium, and high tertiary creep stages using an improved angle tangent method. This establishes the failure criterion for locked-segment type landslides with tilting angles of 0.34°, 1.89°, and 4.38°. In addition, the tilting deformation curve of a locked-segment type landslide with a retaining-wall is utilized to predict the landslide instability by the reciprocal velocity method.

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Section: Methodsmentioning

confidence: 99%

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confidence: 99%