3D stability assessment of stepped slopes in inhomogeneous soils

Li, Xiongwei; Zhu, Jian-qun; Yang, Xiaoli

doi:10.1007/s11771-020-4290-5

Cited by 13 publications

(3 citation statements)

References 22 publications

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“…It can be seen from Figure 9 that from 14 August 2018 and 9 November 2019, a total of four rockfall disasters occurred at the wide cracks on the surface of the slope; the overall deformation of the slope was small with a maximum value of 0.183 m and occurred at the middle of the wide tension crack in the upper part of the slope. According to Li et al [13] and Li et al [56], the slope will continue to maintain a stable state without special inducing factors such as earthquake, heavy rainfall, and artificial excavation.…”

Section: Calculation Resultsmentioning

confidence: 99%

Application of the Terrestrial Laser Scanning in Slope Deformation Monitoring: Taking a Highway Slope as an Example

Yin

Li²,

et al. 2020

Applied Sciences

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Slope deformation monitoring is the prerequisite for disaster risk assessment and engineering control. Terrestrial laser scanning (TLS) is highly applicable to this field. Coarse registration method of point cloud based on scale-invariant feature transform (SIFT) feature points and fine registration method based on the k-dimensional tree (K-D tree) improved iterative closest point (ICP) algorithm were proposed. The results show that they were superior to other algorithms (such as speeded-up robust features (SURF) feature points, Harris feature points, and Levenberg-Marquardt (LM) improved ICP algorithm) when taking the Stanford Bunny as an example, and had high applicability in coarse and fine registration. In order to integrate the advantages of point measurement and surface measurement, an improved point cloud comparison method was proposed and the optimal model parameters were determined through model tests. A case study was conducted on the left side of the K146 + 150 point at S236 Boshan section, Shandong Province, and research results show that from 14 August 2018 and 9 November 2019, the overall deformation of the slope was small with a maximum value of 0.183 m, and the slope will continue to maintain a stable state without special inducing factors such as earthquake, heavy rainfall and artificial excavation.

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Section: Calculation Resultsmentioning

confidence: 99%

Application of the Terrestrial Laser Scanning in Slope Deformation Monitoring: Taking a Highway Slope as an Example

Yin

Li²,

et al. 2020

Applied Sciences

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“…According to the analysis, this action was due to the large number of polar groups in GO, which occurred due to the hydrogen bonds in GO, SA, and AKP . These hydrogen bonds absorbed within a certain wave‐number range . To explore and regulate the effect of the hydrogen bonds in the SA–AKP composite system after different mass fractions of GO were added, the broad peak at 3000–3700 cm −1 was smoothed, and the peak area ratio (i.e., the ratio of different types of hydrogen bonds) was calculated after we subtracted the straight line and the Gauss peak fitting of the peak analyzer.…”

Section: Resultsmentioning

confidence: 99%

Effect of graphene oxide on the molecules of a sodium alginate–krill protein composite system and characterization of the system's composite fiber morphology and mechanical properties

Zhang

Guo

Zhao

et al. 2018

J of Applied Polymer Sci

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Graphene oxide (GO), sodium alginate (SA), and Antarctic krill protein (AKP) were blended to get functional fibers. These GO–SA–AKP composite fibers were obtained by conventional wet spinning with 5% calcium chloride as a coagulation solution. The intermolecular interactions of the GO–SA–AKP composite system were characterized by Fourier transform infrared spectroscopy. The morphology, crystallinity, thermal stability, and mechanical properties of the GO–SA–AKP composites were investigated with scanning electron microscopy, X‐ray diffraction, thermogravimetric analysis, and differential scanning calorimetry. The results show that the number of GO layers decreased gradually during the process of wet spinning. The addition of GO promoted an increase in intramolecular hydrogen bonding and a decrease in intermolecular hydrogen bonding in the composite system. With increasing GO mass fraction, the intermolecular hydrogen‐bond content, crystallinity, breaking strength, and thermal stability in the composite system increased first and then decreased. At the same time, the mass fraction of GO and the draw ratio had significant effects on the surface morphologies of the composite fibers. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46642.

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“…The geological body formed by combining the intermediate bridge and slope of an adjacent open pit has a special spatial shape and structure as well as a significant 3D effect. Currently, the 2D limit equilibrium method is widely used for analyzing slope stability [10][11][12][13] , and the existing 3D limit equilibrium method is only limited to analyzing regular landslide mass stability [14][15][16][17] . However, it is difficult to quantitatively understand the stability of irregular slopes under the support effect of an intermediate bridge in adjacent open pits.…”

Section: Introductionmentioning

confidence: 99%

Three-dimensional stability calculation method and application of intermediate bridge supporting consequent bedding slope in open-pit mine

Wang,

Liang,

et al. 2024

Preprint

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Solving the dynamic synergistic design challenge of slope and intermediate bridge during parallel stripping of multi-pits is crucial to realizing both safe production and economic benefits of mines. Based on the analysis of the failure mode of the intermediate bridge supporting consequent bedding slope, constructed a 3D mechanical model of the intermediate bridge, and analyzed the 3D supporting effect quantitatively. Combined with Mohr-Coulomb shear strength theory, a 2D equivalent method considering the 3D supporting effect of intermediate bridge under different failure modes is proposed, and a 3D stability calculation method of slope under this effect is established. In addition, the main influencing factors of the intermediate bridge supporting effect are analyzed. The 3D stability coefficient regression model is constructed by using the response surface method, and the validity of the model for solving practical engineering problems is verified by engineering application. The results show that when considering the combined sliding failure mode, the design bottom width d should be given priority in the establishment of supporting structures such as dump bridges, for the intermediate bridge demolition design project, the design bridge length should be given priority b. The interaction between the bottom width d and the bridge height h has a significant effect on the 3D stability of the slope; For the shear dilatancy failure mode, the supporting and demolition engineering should give priority to the design of bridge height h and bottom width d respectively. The interaction between bridge height h and bridge length b has the most significant effect on the 3D stability of the slope. The error rate between the 3D stability calculation results and the predicted value of the regression model is 1.9–3.3%, and the regression model can fully meet the actual needs of the project. This study lays a theoretical and application foundation for the dynamic collaborative design, stability control and engineering implementation of slope and intermediate bridge in multi-pit parallel stripping open-pit coal mine.

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3D stability assessment of stepped slopes in inhomogeneous soils

Cited by 13 publications

References 22 publications

Application of the Terrestrial Laser Scanning in Slope Deformation Monitoring: Taking a Highway Slope as an Example

Application of the Terrestrial Laser Scanning in Slope Deformation Monitoring: Taking a Highway Slope as an Example

Effect of graphene oxide on the molecules of a sodium alginate–krill protein composite system and characterization of the system's composite fiber morphology and mechanical properties

Three-dimensional stability calculation method and application of intermediate bridge supporting consequent bedding slope in open-pit mine

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