Grading early warning criteria for landslide on earth slope
LI Mengchen
ZHAO Zhizhong
XUE Jun
JIANG Yishun
Abstract：To address the issue that the deformation patterns of the same soil slope in different deformation stages are different,and a single warning indicator cannot express the dynamic deformation characteristics of the soil slope throughout the entire deformation process,a classification warning method for landslides in soil slopes is proposed.The angle displacement field,macroscopic deformation signs of the slope,and safety factor are selected as warning indicators.The method is based on outdoor model experiments to establish the angle displacement field of each slope profile in different deformation stages,fitting the angle displacements within the same field using the Levenberg-Marquardt optimization algorithm.Dynamic classification warning threshold expressions is constructed.Field investigations and relevant regulations are combined to extract standard thresholds based on macroscopic deformation signs of the slope and safety factors separately.A four-level warning mechanism for landslides in soil slopes is established with angle displacement,macroscopic deformation signs of the slope,and safety factor as warning indicators,using blue for attention level warning,yellow for caution level warning,orange for alert level warning,and red for alarm level warning.Multiple sources of information are fully utilized to achieve timely and effective warning of slope instability to realize dynamic control of the development of soil slope stability changes.
Keywords：soil slopelandslideangle displacement fielddata fittinggraded early warningearly warning system
Publication Date：2024-09-30
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：10( 46-55 )