Arch dam abutment slope stability judgment method based on three-dimensional visualization

A technology for arch dams and slopes, applied to arch dams, dams, image data processing, etc., can solve problems such as heavy calculation workload, unsatisfactory results, and low-level errors

Active Publication Date: 2016-02-24
POWERCHINA XIBEI ENG +1
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Problems solved by technology

[0002] The stability analysis of arch dam abutment slope is a basic task in the design of arch dams. The traditional judgment 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 (blo

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  • Arch dam abutment slope stability judgment method based on three-dimensional visualization
  • Arch dam abutment slope stability judgment method based on three-dimensional visualization
  • Arch dam abutment slope stability judgment method based on three-dimensional visualization

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Embodiment 1

[0036] This embodiment provides a method for judging the stability of the abutment slope of an arch dam based on three-dimensional visualization, which includes the following steps:

[0037] (1) Collect basic modeling data and calculation data, where the basic modeling data include extracting mountain topographic lines, basic shape parameters of arch dams, bottom slip surface inclination and inclination angle, sideslip surface inclination and inclination angle from geological data provided by geology; The calculation data include arch dam thrust, upstream and downstream water levels, seismic parameter coefficients, and calculation conditions including normal water storage level, heavy rain, and temperature rise and drop;

[0038] (2) According to the topographic line parameter data that step (1) collects, utilize discrete smooth interpolation method to establish mountain topographic surface, combine Civil3D software to generate three-dimensional model 1;

[0039] (3) Using the...

Embodiment 2

[0077] This embodiment is further improved on the basis of Embodiment 1. Considering that the seismic action will affect the stability of the block, it is necessary to consider the seismic action in some cases, and this step is omitted when it is not necessary to consider the seismic action. If earthquake action is to be considered in the calculation of shear strength and shear strength in the above step (8), the seismic inertial force is calculated using the pseudo-static method, the seismic inertial force of the slider on the left bank points to the right bank, and the seismic inertial force of the slider on the right bank points to the left bank ,Calculated as follows:

[0078] F = a h ξαG / g

[0079] In the formula: a h -Design earthquake acceleration; ξ-seismic action effect reduction coefficient, take 0.25; α-dynamic distribution coefficient, take 1.0 for all rock masses.

[0080] After considering the earthquake action, the shear strength and shear strength are calcul...

Embodiment 3

[0101] The method for judging the stability of the abutment slope of an arch dam based on the three-dimensional visualization technology provided by the above two embodiments can be carried out in combination with a computer, and the three-dimensional visualization development can be carried out using the computer as a platform, and the elements of the calculation process can be visualized and templated , automation, the process is as follows:

[0102] (1) if figure 1 As shown, according to the collected geological terrain lines, the three-dimensional model of the mountain is established by using the discrete smooth interpolation method; the three-dimensional geometric model of the arch dam is constructed by combining the three-dimensional spatial information with the parameter data of the arch dam, and the basic shape of the dam is generated by using the Civil3D computer software structure 2;

[0103] (2) if figure 2As shown, using the three-dimensional model of the arch d...

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Abstract

The invention belongs to the technical field of dam abutment slopes, and relates to an arch dam abutment slope stability judgment method based on three-dimensional visualization. By improving and enriching an existing method, and combining a secondary development technology of Civil 3D, the computation process of an arch dam abutment slop stability is visual and controllable, the computing result is accurate and reliable and more approximate to the engineering practice, and the security risk of engineering design can be avoided to a greater extent. Besides, three-dimensional visualization development can be performed by taking a computer as a platform, and the computation process elements can be visual, modularized and automatic. The judgment method provided by the invention is convenient and efficient, the result is efficient and reliable and the technology is advanced; moreover, the judgment method has a more accurate true situation of the arch dam abutment slop stability, and is more conducive to the improvement of the safety and efficiency of the engineering design.

Description

technical field [0001] The invention belongs to the technical field of dam abutment slopes, and mainly relates to a method for measuring the stability of arch dam abutment slopes based on three-dimensional visualization. Background technique [0002] The stability analysis of arch dam abutment slope is a basic work content in the design of arch dams. The traditional judgment 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.), due to the large computational workload and low computational efficiency in the traditional judgment method, and due to the limitations of traditional two-dimensional work Therefore, the probability of low-level errors in the actual calculation results is extremely high, and the calculated results are often not ideal. [0003] In view of the above reasons, with the ad...

Claims

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Application Information

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IPC IPC(8): G06F17/50G06T17/05
CPCE02B7/12G06F30/13G06T17/05
Inventor 蔡云鹏李梦柏俊磊
Owner POWERCHINA XIBEI ENG
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