Study on the Stability of Rock Slope Under the Coupling of Stress Field, Seepage Field, Temperature Field and Chemical F
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RESEARCH ARTICLE-CIVIL ENGINEERING
Study on the Stability of Rock Slope Under the Coupling of Stress Field, Seepage Field, Temperature Field and Chemical Field Dengxing Qu1,2 · Yi Luo3 · Xinping Li3 · Gang Wang2,3 · Guang Zhang1 · Kun Xu2,3 Received: 4 March 2020 / Accepted: 14 June 2020 © King Fahd University of Petroleum & Minerals 2020
Abstract The research on the stability of rock slopes under the multi-field coupling has important theoretical and practical significance for the analysis and prevention of freeze–thaw disasters of engineering in cold regions. In this paper, COMSOL Multiphysics numerical simulation software and numerical simulation methods are adopted. Based on the coupling theory of rock stress field, seepage field, temperature field, and chemical field, and field test data, the stability of rock slope under the multi-field coupling is studied under the research background of the highway slope of Jinghe to Yining County of G577 line. Based on the study of multi-field coupling theory, a numerical calculation model is established, the rationality of the numerical calculation model is verified, and the maximum frozen thickness of the slope is determined. On this basis, the change rules of the relevant parameters such as stress, temperature, deformation and damage of the highway slope in the engineering area are studied. The slope stability analysis is performed based on the YAI slope stability evaluation method. The stability of the slope is analyzed from the freezing, thawing and freeze–thaw process states of the shallow layer of the slope. It provides a theoretical basis for engineering construction in cold region. Keywords Multi-field coupling · Freeze–thaw cycles · Chemical damage · Rock slope · Stability
1 Introduction Research on slope stability has always been a very important part in the field of geotechnical engineering construction. In the process of mining engineering, water conservancy and Hydropower Engineering and other construction projects, human beings inevitably need to reconstruct some surface rocks. At present, scholars at home and abroad have conducted in-depth research on the failure mechanism of conventional rock slopes and have achieved rich results. However, the related research on slope stability under the * Yi Luo [email protected] * Gang Wang [email protected] 1
School of Safety Science and Emergency Management, Wuhan University of Technology, Wuhan, China
2
School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan, China
3
Hubei Key Laboratory of Roadway Bridge and Structure Engineering, Wuhan University of Technology, Wuhan, China
multi-field coupling in cold regions is still insufficient. The reason is that many natural and human factors are involved; the destruction mode is more complicated and changeable and the theoretical knowledge involved is also more extensive [1–3]. In the initial stage of slope excavation, the stress field, seepage field and temperature field are redistributed to a new equilibrium state. Howeve
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