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

A search method and failure surface technology, which is applied in the search field of reverse-dip slope bending and toppling failure surface, can solve problems such as rock formation failure, singleness, and no reasonable and effective search for bending and toppling failure surface, etc., to achieve unresolved problems Deterministic problems, the effect of improving reliability

Inactive Publication Date: 2018-11-02
INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI
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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.

Method used

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

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Embodiment 1

[0122] The anti-inclination slate slope in southern Anhui is selected as an engineering example of the present invention. The slope height is 100m, the rock layer thickness is 4m, the total number of rock layers is 40, and the rock layer bulk density is 27×10 3 KN / m 3 , the slope angle is 55°, the rock formation angle is 63°, the natural slope angle is 0°, the interlayer internal friction angle is 18°, the rock formation internal friction angle is 45°, the cohesion force is 0.4MPa, and the tensile strength is 1.5 MPa.

[0123] Using the algorithm proposed by the present invention, the final result obtained is: the slope is toppled and damaged; the total number of rock formations is 30, and the No. 1-8 rock formations are sheared and damaged, and all the other rock formations are damaged by bending and pulling, and wherein the 28th- The No. 30 rock layer fractured and failed under its own weight; the external thrust required for the overall failure of the rock layer was -1.59...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/13G06F2119/06
Inventor 苏立君屈新张崇磊
Owner INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI
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