Method for measuring rock slope stability safety coefficient

Abstract

The invention discloses a method for measuring the rock slope stability safety coefficient in the field of rock slope engineering. The method comprises the steps of: establishing a mathematical model,developing a model material, building a slope model, carrying out slope model comprehensive method test, calculating a slope stability safety coefficient and the like. The improvement point of the method lies in that: firstly, mechanical parameters of a weak structural surface are reduced to a certain multiple, then under the condition that the mechanical parameters are kept unchanged, a model steel frame is gradually inclined and lifted until the slope is overloaded and damaged, then data obtained through the test is substituted into a safety coefficient evaluation expression derived and established through the method, and then the slope stability safety coefficient is calculated. The method comprises parameter values of the two aspects of slope strength reduction and overload, can comprehensively reflect the adverse effects of various factors like weakening of slope structural surface strength caused by rainfall, water seepage and other conditions and increase of sliding force caused by overweight of a slope rock mass on slope stability, and has good engineering application value.

Description

technical field [0001] The invention relates to the field of rock slope engineering, in particular to a method for measuring the stability safety factor of rock slopes. Background technique [0002] Calculation and analysis methods of stability and safety factor of rock slopes are important scientific issues in the field of geotechnical engineering. In our country, with the development of the national economy, especially the construction of infrastructure such as hydropower projects, railways, highways and mining projects, a large number of rock slope projects have appeared in these projects, especially high and steep rock slopes in hydropower projects. quality slope. This type of slope is usually high and steep, with complex geological conditions and harsh environmental factors. It not only has a strong unloading effect, but also causes rock slope accidents caused by multiple factors such as reservoir storage, precipitation, and excavation. It has brought serious losses t...

AI Technical Summary

Problems solved by technology

Existing slope physical simulation methods usually only consider a single factor affecting slope rock mass overweight, and have not yet simulated multiple factors that affect slope instability and failure

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