Method of searching curved dumping damaged surface of anti-inclined slope

Abstract

The invention discloses a method of searching a curved dumping damaged surface of an anti-inclined slope, belonging to the technical field of geotechnics. The method is characterized by comprising thesteps of simplifying a layered rock into an overlapped cantilever beam model, and determining a damage model of a rock stratum according to a rock stratum force mechanism and a strict mechanical derivation; and determining a smallest external force for whole slope damage by combining a Pan Jiazheng principle and a stepwise analysis method, wherein a corresponding damaged surface is a potential slope damaged surface, and a rock stratum covered by the damaged surface is the most dangerous rock stratum group. Compared with the prior art, the method of searching the curved dumping damaged surfaceof the anti-inclined slope has the advantages of first, fully considering the action of the force between rock stratums; second, conducting the whole searching processing according to strict mechanical derivation; and third, determining the accurate number of damaged rock stratums. The searching method provided in the invention solves the uncertainty problem of the existing semi-theory semi-empirical method, makes analysis of the curved dumping theory more reliable, and has high engineering utility value.

Description

technical field [0001] The invention relates to the technical field of searching for a slope failure surface, in particular to a search method for a curved toppling failure surface of an anti-inclination slope. Background technique [0002] As a typical rock slope instability mode, toppling failure widely exists in engineering slopes such as water conservancy and hydropower, highways, and open-pit mines at home and abroad, especially in anti-dipping slopes. The toppling, instability and destruction of slopes have caused great harm to the safety of people's lives and property and engineering construction. However, due to the limitations of people's understanding of reverse slopes, this type of slope has not attracted people's attention until the frequent occurrence of reverse slope instability accidents. At present, a large number of experts and scholars have devoted themselves to the stability analysis of anti-dipping slopes, and have achieved remarkable results. Among the...

AI Technical Summary

Problems solved by technology

However, from field observations and engineering practice, the form of the curved toppling failure surface of most anti-inclination slopes is not a single straight line, and the failure of rock formations is not only caused by bending and tearing.

At present, many scholars have carried out research on these problems, but due to various reasons, they have not given a reasonable and effective method for searching the curved toppling failure surface.

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