A Time-Scale Varying Finite Difference Method for Analyzing the Influence of Rainfall and Water Level on the Stability of a Bank Slope-Reference-Cited by-同舟云学术

A Time-Scale Varying Finite Difference Method for Analyzing the Influence of Rainfall and Water Level on the Stability of a Bank Slope

Published:2023-04-23 Issue:9 Volume:13 Page:5268
ISSN:2076-3417
Container-title:Applied Sciences
language:en
Short-container-title:Applied Sciences

Author:

Zhang Guorong¹²,Lu Guangyin¹,Xia Chengzhi¹³,Bai Dongxin¹,Liu Taoying¹

Affiliation:

1. School of Resource and Safety Engineering, Central South University, Changsha 410083, China

2. Zhejiang Jining Expressway Co., Ltd., Anji 313300, China

3. School of Civil Engineering, Tongji University, Shanghai 200092, China

Abstract

A time-scale varying finite difference method (TSFDM) was proposed to analyze the influence of rainfall infiltration and water level fluctuation on the stability of a bank slope in the Yunnan Pulang tailings pond. The stability of the slope obtained by the TSFDM and the limit equilibrium method (LEM) were compared. The result indicates that the TSFDM can obtain reliable spatiotemporal variation features of geotechnical parameters of the bank slope under different conditions. The water level fluctuation has a greater impact on the stability than rainfall infiltration. In addition, the safety factor decreases as the shear strain rate increases on the weathering interface. The safety factors under all conditions are smaller than one, so corresponding measures should be taken. The research provides references for preventing disasters caused by bank slope failure.

Funder

National Natural Science Foundation of China

Hunan Provincial Key Research and Development Program

Natural Resources Research Project of Hunan Province

Science and Technology Project of Hunan Provincial Department of Transportation

Publisher

MDPI AG

Subject

Fluid Flow and Transfer Processes,Computer Science Applications,Process Chemistry and Technology,General Engineering,Instrumentation,General Materials Science

Link

https://www.mdpi.com/2076-3417/13/9/5268/pdf

Reference22 articles.

1. Stability Analysis of Slope Based on Dynamic and Whole Strength Reduction Methods;Chen;Chin. J. Rock Mech. Eng.,2014

2. Construction mechanics and time-varying mechanics in civil engineering;Cao;China Civ. Eng. J.,2001

3. A time-varying analytic model of tailings slope and its application;Zhang;Rock Soil Mech.,2014

4. Unsaturated seepage analysis of slope under rainfall condition based on FLAC3D;Jiang;Rock Soil Mech.,2014

5. Secondary development of a viscoelasto-plastic rheological constitutive model of rock based on FLAC3D;Chu;Rock Soil Mech.,2006