Author(s)

Guy Oyéniran Adeoti¹, Judicaël Koffi Agbelele^1,2, Crespin Prudence Yabi¹, Rufin Nongnidé Kinhoun¹, Éric Adéchina Alamou¹

¹Laboratory of Testing and Studies in Civil Engineering (L2EGC), National University of Science, Technology, Engineering, and Mathematics (UNSTIM), Department of Zou, Abomey, Republic of Benin.
²National School of Technical Education (ENSET), Lokossa, Republic of Benin.

This comprehensive review paper explores various aspects of geotechnical engineering, with a focus on the management of unstable terrains, numerical methods for solving complex soil and consolidation problems, rheological analysis of suspensions and muddy soils, and stability analysis of slopes. It begins by examining the unique physicochemical properties of cohesive sediments, including cohesion and specific surface area. The temporal evolution of deposit concentration and average bed concentration in unstable terrains is discussed, along with settling behavior of isolated particles and hindered settling using empirical equations. Key sedimentation theories, such as Kynch’s theory, and geotechnical consolidation theories, including Terzaghi’s consolidation equation and Gibson’s theory, are presented. The investigation interrelates these theories and principles to offer a holistic view of managing unstable terrains. It also addresses the challenges associated with experimental determination of constitutive relationships and presents alternative simplification methods proposed by researchers. Additionally, it delves into numerical methods for solving nonlinear partial differential equations governing soil behavior, emphasizing the need for numerical frameworks and discussing various techniques and associated challenges. The rheological analysis section covers material flow behavior, rheological behavior models, and the rheological properties of water and cohesive sediment mixtures. Fundamental geotechnical calculations, constitutive laws, and failure criteria are explained, highlighting their relevance in geotechnical engineering applications. This paper provides a multidimensional perspective on geotechnical engineering, offering valuable insights into soil properties, consolidation processes, numerical methods, rheological analysis, and slope stability assessment for professionals in the field.

Consolidation Processes, Managing Unstable Terrain, Numerical Methods, Safety Coefficient, Slope Stability Assessment, Soil Cohesion

Adeoti, G. , Agbelele, J. , Yabi, C. , Kinhoun, R. and Alamou, É. (2023) Strategies for Advancing Road Construction Slope Stability: Unveiling Innovative Techniques for Managing Unstable Terrain. Open Journal of Civil Engineering, 13, 572-616. doi: 10.4236/ojce.2023.134041.