Application of a Geotextile in the Treatment of Post-Subsidence in Karst Areas

Wu, Di; Luo, Chen; Li, Yuankun; Yang, Yanxin; Liang, Yihuai; Wu, Jun

doi:10.3390/app112411826

Cited by 3 publications

(1 citation statement)

References 31 publications

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“…The 3D numerical simulation model consists of three parts: virtual baffle, filling with different properties, and collapse area with vertical displacement. Base on numerical simulation, a numerical simulation model was established and verified by existing model tests such as Wu [10] . Considering the boundary effect generated by numerical simulation, the model size was set as 30m×30m×5m (length × width × height), and the collapse surface was a circular.…”

Section: The Establishment Of Computational Modelmentioning

confidence: 99%

Research on factors influencing stability of Subgrade Soil Cave in karst area based on Soil Arching Effect

Wu,

Wang,

Liang

et al. 2024

Atlantis Highlights in Engineering

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In karst areas of China, subgrade cave collapse is a serious threat to traffic safety. In this paper, numerical simulation and experimental validation are used to examine the effects of different collapse widths, fill heights, and cohesive forces on the stability of subgrade soil caves. The results of the experiment indicate that with the increase of collapse width, the load sharing in the stable area increases, and the stability of the soil caves decreases. The stability area's load distribution increases with increasing filling height, however the filling height has no effect on the stability area's overall change trend in terms of soil pressure. The greater the cohesion, the smaller the load sharing in the stable region, indicating that the stability of the soil caves increases with the increase of cohesion.

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Section: The Establishment Of Computational Modelmentioning

confidence: 99%

Research on factors influencing stability of Subgrade Soil Cave in karst area based on Soil Arching Effect

Wu,

Wang,

Liang

et al. 2024

Atlantis Highlights in Engineering

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Development of OF based intelligent geotextile and its case study in high-speed railway subgrade

Xue

Zhang

et al. 2023

Measurement

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Study of the Subsidence Width Influence on the Geotextile Control of a Subgrade Collapse Based on a Half-Symmetric Model Test

Liang

Yang

et al. 2022

Applied Sciences

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The geotextile can be used to treat a subgrade collapse in karst areas. The subsidence width is an important factor affecting the geotextile to treat subgrade collapses. However, the available studies on the influence of the subsidence width on geotextile treatment settlement are limited. To study the effect of the subsidence width on the geotextile control of subgrade collapses, the half-symmetric model test had been established. To make up for the deficiencies of the model test, the optimized subsidence width was probed through a numerical calculation under ten different situations conducted by the finite element analyses. Previous full-section model test results were used to verify the rationality of the half-symmetric model and calibrate the input parameters of the numerical models. The influence of the subsidence width on soil pressure, tensile force and deformation of the geotextile, and soil settlement was analyzed. With the increase of the subsidence width, more loads of the subsidence area were transferred to a stable area via the geotextile, the vertical normal stress at the edge increased rapidly, the tensile force of the geotextile and vertical soil displacement in the subsidence area increased noticeably. When the anchorage ratio of L ≤ 2.0B, the geotextile fracture or soil failure occurred during the model test which indicated the geotextile treatment of the subgrade collapse was not suitable for projects with an anchorage ratio of L ≤ 2.0B. The geotextile might be reaching the limit of its tensile stiffness when the anchorage ratio of L = 2.22B. This is providing an insight into the treatment of a subgrade collapse in karst areas using geotextile.

show abstract

Application of a Geotextile in the Treatment of Post-Subsidence in Karst Areas

Cited by 3 publications

References 31 publications

Research on factors influencing stability of Subgrade Soil Cave in karst area based on Soil Arching Effect

Research on factors influencing stability of Subgrade Soil Cave in karst area based on Soil Arching Effect

Development of OF based intelligent geotextile and its case study in high-speed railway subgrade

Study of the Subsidence Width Influence on the Geotextile Control of a Subgrade Collapse Based on a Half-Symmetric Model Test

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