Determination method for different geological interface calculation parameters of sliding blocks of arch dam abutment

A sliding block and geological interface technology, applied in the direction of calculation, electrical digital data processing, special data processing applications, etc., can solve the problem of inaccurate selection, failure to consider the lithology distribution of sliding surfaces, and stability analysis of arch dam abutment slopes Problems such as unsatisfactory calculation results can achieve the effect of avoiding safety risks

Active Publication Date: 2016-03-30
POWERCHINA XIBEI ENG
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Problems solved by technology

[0004] The purpose of the present invention is to overcome that the traditional calculation method cannot take into account the lithology distribution of each sliding surface, and then cannot accurately

Method used

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  • Determination method for different geological interface calculation parameters of sliding blocks of arch dam abutment
  • Determination method for different geological interface calculation parameters of sliding blocks of arch dam abutment
  • Determination method for different geological interface calculation parameters of sliding blocks of arch dam abutment

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Embodiment 1

[0021] This embodiment provides a method for determining calculation parameters of different geological interfaces of the abutment sliding block of an arch dam, combining figure 1 , figure 2 and image 3 , including the following steps:

[0022] (1) Collect basic modeling data, and extract corresponding geological boundary lines from these geological data, including strong unloading lines, strong weathering lines, weak unloading lines, weakly weathering lines, slightly weathered lines, and bedrock boundary lines.

[0023] (2) According to the geological boundary line in step (1), the geological boundary is established, including strong unloading surface, strong weathered surface, weak unloading surface, weakly weathered surface, slightly weathered surface, and bedrock interface.

[0024] In the above step (2), the establishment of the geological interface is completed by using the discrete smooth interpolation method. The discrete smooth interpolation method is a method com...

Embodiment 2

[0032] In this embodiment, only one kind of geological boundary line - strong unloading line is selected, combined with figure 1 , figure 2 and image 3 As shown in , the methods for determining the different geological interfaces and parameters of the arch dam abutment sliding block are explained, and the methods for other geological structural surfaces are deduced by analogy;

[0033] (1) Collect basic modeling data, and extract corresponding strong unloading line 2 from these geological data, such as figure 1 shown;

[0034] (2) According to the strong unloading line 2 in step (1), use the discrete smooth interpolation method to form a strong unloading geological structure surface 4, as figure 2 shown. Structural surface fitting is carried out by the least square method to minimize the fitting error;

[0035] (3) Utilize the strong unloading geological structural surface 4 formed in step (2) to divide the three-dimensional block 1 of the abutment sliding block of the...

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Abstract

The invention relates to the technical field of dam abutment slopes and mainly relates to a determination method for different geological interface calculation parameters of sliding blocks of an arch dam abutment. The method comprises the steps of modeling, geological interface establishment, zoning, weighting calculation and the like. According to the method, a lithological distribution state of a structural surface is determined with a more accurate method in a spatial modeling mode, so that the values of the calculation parameters are closer to engineering practice, the problem that a calculation result of dam abutment slope stability analysis is not ideal due to the fact that a conventional calculation method cannot consider lithological distribution of each sliding surface and then proper structural surface calculation parameters cannot be accurately selected and used to perform calculation is solved, and the safety risk of engineering design is avoided to a larger extent.

Description

technical field [0001] The invention relates to the technical field of dam abutment slopes, and mainly relates to a method for determining calculation parameters of different geological interfaces of an arch dam abutment sliding block. Background technique [0002] The stability analysis of arch dam abutment slope is a basic work content in the design of arch dams. The traditional calculation method is to analyze the external load of relatively independent wedge-shaped blocks formed by the mutual cutting of several structural planes in the abutment mountain (arch dam Arch end thrust, water load, rock (block) body weight, etc.) to carry out the limit equilibrium state. [0003] When doing limit equilibrium analysis of arch dam abutment sliding blocks, accurate calculation parameters of side slip surface and bottom slip surface are required, because the actual natural mountain mass is often composed of different lithologies (including strong weathering, weak weathering , stro...

Claims

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Application Information

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IPC IPC(8): G06F19/00
CPCG16Z99/00
Inventor 蔡云鹏李梦柏俊磊
Owner POWERCHINA XIBEI ENG
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