Side slope slippage stability judgment method taking non-saturated region effect into consideration

Abstract

The invention discloses a side slope slippage stability judgment method taking non-saturated region effect into consideration. The method comprises the following steps (1), obtaining morphological characteristic information for researching a side slope and geological and hydrological parameters corresponding to side slope soil; (2), obtaining an initial condition in the side slope through segmented point obtaining actual measurement or through utilization of a side slope initial boundary condition simulation method; (3), simulating a subsequent hydrological process in the side slope accordingto corresponding change of a side slope boundary condition under side slope induction factor effect, and obtaining a water line in the side slope at each time; (4), calculating a real-time side slopestability coefficient through utilization of a side slope stability safety coefficient calculation formula, and drawing a side slope minimum stability safety coefficient change flow line; and (5) analyzing the earliest unstability time and a corresponding unstability area of the side slope according to the side slope minimum stability and security coefficient change flow line. According to the method, a relatively accurate real-time stability safety coefficient calculation result can be obtained, the method is used for judging stability of the side slope and predicting unstability time, and arelatively effective reference model for prediction and prevention of a side slope disaster is provided.

Description

technical field [0001] The invention relates to evaluating the sliding stability of a shallow slope under the action of landslide inducing factors, and specifically proposes a method for judging the sliding stability of a slope considering the effect of an unsaturated zone. Background technique [0002] Shallow landslides are a kind of natural disasters that occur frequently and have serious consequences. They occur frequently all over the world, causing huge losses to the social economy and burying hidden dangers to people's lives. With the rapid development of society and economy, in the process of human beings transforming nature, slope instability frequently occurs in mountainous areas, river courses, or beside newly excavated roads, causing non-negligible losses to people's life safety and economic safety. . Whether the slope stability and instability time can be accurately calculated is of great significance for protecting people's lives and reducing unnecessary socia...

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Problems solved by technology

[0004] The main purpose of the present invention is that, in view of the importance of the unsaturated zone in the study of landslide instability, the purpose of the present invention is to provide a method for judging the stability of slope slips considering the unsaturated zone, aiming to clarify the unsaturated zone The important role and influence mechanism of shallow landslides, improving the existing landslide analysis theory, and putting forward the landslide analysis theory considering the unsaturated zone, can obtain more accurate real-time slope safety factor calculation results, which can be used to judge the edge The stability of the slope and the predicted instability time provide a more effective reference model for the prediction and protection of landslide hazards

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