Numerical evaluation of reinforced slopes with various backfill-reinforcement-drainage systems subject to rainfall infiltration

Yang, Kuo-Hsin; Thuo, Joseph; Huynh, Vo Duyen Anh; Nguyen, Thanh Son; Portelinha, Fernando Henrique Martins

doi:10.1016/j.compgeo.2017.10.012

Cited by 46 publications

(8 citation statements)

References 48 publications

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“…ese years, more researchers devoted themselves to the field of slope stability and failure mechanism study under rainfall, involving modelling test [15][16][17][18][19][20], numerical simulation [21][22][23][24], and field monitoring [25][26][27]. As investigated, slope safety is mostly influenced by rainfall, causing the surface erosion to the slopes by runoff [28][29][30][31][32], weakening the slope soil strength while percolating into the slope body [33][34][35][36][37], and reducing the effective stress in the slope soil while saturating the slope body [38][39][40][41][42]. For the soil slope is loose, especially for the loess slopes, the raindrops and the runoff water can easily scour the soil particles on the slope surface, in due course forming gullies and fall-holes in the slopes [43].…”

Section: Introductionmentioning

confidence: 99%

Experimental Assessments of Treating Effect on Retaining Walls for Loess Slopes under Long‐Term Rainfall

Liu

Zhou

et al. 2021

Advances in Civil Engineering

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Failures of treated slope occurring in China are at a continually increasing rate, and the huge number of treated loess slopes is calling for a postevaluation; however, no mature technique is in place. Based on an actual loess slope in Shaanxi Province treated by retaining wall, indoor geotechnical and model tests were conducted, revealing the rainwater infiltration process and pressure variations behind the wall, and the processes were then adopted to perform the postevaluation of the treated slope. The results proposed that effectual measures hence needed to be taken so as to avert rainwater infiltrating along the wall face and back or flowing through the wall body, which can soften the soil of the slope bottom. Although the wet front was developed by the rainfall process, it cannot be used as the boundary between saturated and unsaturated areas. Despite the peculiarly large soil pressure upon the wall back at the top layer, the soil pressure increases to a large value and then decreases with the depth. The model test results and investigation results were used to conduct the postevaluation of the prototype slope, which formed a postevaluation frame relevant to other slope postevaluations.

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Section: Introductionmentioning

confidence: 99%

Experimental Assessments of Treating Effect on Retaining Walls for Loess Slopes under Long‐Term Rainfall

Liu

Zhou

et al. 2021

Advances in Civil Engineering

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“…Since the second stage, China's backfill system has gradually emerged, especially since 2010. In 2013, to improve ground stability and reduce ore dilution, L. Li [32] redesigned the drainage function of the conventional backfilling system in the stope, and Yang K. et al [33] completed the same research in 2018. In 2014, on the basis of reviewing the current clean coal mining technology, Chang Q. et al [34] introduced the technical principle and process flow of coal paste backfill mining, discussed the composition and characteristics of backfill materials, and the composition of backfill system and backfill technology; at the same time, the concrete implementation of the technique and its application in China of a certain mine of paste backfill mining were analyzed, and the application practice showed that the paste backfilling mining rate could improve the safety of coal mining and excavation, such as by using coal gangue solid waste resources, effectively solved the problem of surface subsidence caused by underground mining activities.…”

Section: Discussionmentioning

confidence: 99%

The Recent Progress China Has Made in the Backfill Mining Method, Part II: The Composition and Typical Examples of Backfill Systems

Zhao

et al. 2021

Minerals

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The backfill mining method is a widely used mining method in the major mines of China, which can maximize the recovery of mineral resources and protect the environment. Currently, major mines in China are starting to build backfill systems to apply the backfill mining method, therefore, Part II reviews the progress China has made on creating backfill systems, of which the main contents include: (1) Composition of the backfill system common in Chinese mines; (2) Typical examples of the backfill system in China. Finally, Part II serves as a guide to begin a conversation, and to encourage experts and scholars to engage in the research of this field.

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“…In recent years, more and more scholars devoted to the field of slope stability and failure mechanism investigation under rainfall, incorporating modelling test [8][9][10][11] , numerical simulation [12][13][14][15] , and filed monitoring [16][17][18] . As revealed, slope safety is critically influenced by rainfall, leading to the surface erosion to the slopes by rainwater runoff [19][20][21][22][23] , degrading the slope soil strength as percolating into the slope [24][25][26] , and lessening the effective stress in the slope soil while saturating it [27][28][29][30][31] . As the loess slope is loose, the rain drops and the runoff water can easily scour the soil particles of the slope surface, forming fall-holes and gullies in the slopes 32 .…”

Section: Introductionmentioning

confidence: 99%

Post-Evaluation of Slope-Cutting on Loess Slopes Under Long-Term Rainfall Based on Model Test

Liu

Zhou

et al. 2021

Preprint

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Failures of treated slope occurring in China are at a consistently increasing rate, leaving the huge number of treated loess slopes calling for post-evaluation, however, no mature technique is in place. Depended on an loess slope in Shaanxi province treated by slope-cutting, indoor geotechnical and model tests were conducted, revealing the rainwater infiltration characteristics and pressure varying characteristics inside the slope, the results of which were then adopted to perform the post-evaluation of the treated slope. The results showed that the rainwater scouring effect on the loess slope surface attenuates gradually, and enters a steady stage after the first year of rainfall. The rainwater preferentially penetrates the platforms with gradually attenuating rates, however the wetting front can not be deemed as the boundary between the saturated and unsaturated areas, as the most parts of the model slope were indicated unsaturated by the pore water pressure sensors. Caused by the in-situ stress release, the soil pressures don’t increase but decrease sharply at the start of the rainfall. The displacements mainly occurs in the first two years of rainfall, following by steady periods. The model test results and investigation results were then used to conduct the post-evaluation of the prototype slope, which formed a post-evaluation frame relevant to other slope post-evaluations.

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Numerical evaluation of reinforced slopes with various backfill-reinforcement-drainage systems subject to rainfall infiltration

Cited by 46 publications

References 48 publications

Experimental Assessments of Treating Effect on Retaining Walls for Loess Slopes under Long‐Term Rainfall

Experimental Assessments of Treating Effect on Retaining Walls for Loess Slopes under Long‐Term Rainfall

The Recent Progress China Has Made in the Backfill Mining Method, Part II: The Composition and Typical Examples of Backfill Systems

Post-Evaluation of Slope-Cutting on Loess Slopes Under Long-Term Rainfall Based on Model Test

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