Rainstorm disaster risk evaluation method for foundation slope of transmission line tower

A technology for tower foundations and transmission lines, which is applied in the direction of electrical digital data processing, special data processing applications, instruments, etc., can solve the problem that the risk assessment method cannot be applied mechanically, and achieve the effect of improving disaster resistance performance and finely managing the power grid

Inactive Publication Date: 2013-01-09
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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Problems solved by technology

In addition, although the slope instability caused by heavy rain belongs to the scope of slope engineering research, its risk assessment method cannot be applied mechanically to the existing slope stability assessment method, which is

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  • Rainstorm disaster risk evaluation method for foundation slope of transmission line tower
  • Rainstorm disaster risk evaluation method for foundation slope of transmission line tower
  • Rainstorm disaster risk evaluation method for foundation slope of transmission line tower

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[0028] Hereinafter, the embodiments are further described in conjunction with the drawings of the present invention.

[0029] As shown in the drawings, the method for assessing the risk of a heavy rain disaster on the slope of the foundation of a transmission line tower provided by the present invention specifically includes the following steps:

[0030] (1) Determination of hazard factors

[0031] Analyzing the influencing factors of rainstorm disasters and determining the hazard factors are the first steps to carry out rainstorm disaster risk assessment. The influencing factors of rainstorm disasters include critical rainfall, slope, slope height, slope landform characteristics, stratum lithology, geological structure, soil characteristic parameters, slope vegetation characteristics, etc. To determine hazard factors and establish an evaluation system, the area must be fully considered The differences and local geographic characteristics. According to the statistics of a large num...

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Abstract

The invention discloses a rainstorm disaster risk evaluation method for a foundation slope of a transmission line tower. The method comprises the following steps of: obtaining disaster causing factors controlling the rainstorm risk of the foundation slope of the transmission line tower according to extensive disaster statistics and artificial rain slope corrosion test statistics; and performing quantification and normalization processing on the disaster causing factors and slope stability, and calculating a weight vector of influence of each disaster causing factor on the disaster causing of rainstorm by adopting an improved hierarchical analysis calculation program; establishing a mapping relationship between the disaster causing factors and a slope stability safety coefficient by adopting an artificial intelligence method and an improved back propagation (BP) network to obtain a mathematical model for evaluating the rainstorm landslide risk of the foundation slope of the transmission power tower; quantifying vulnerability factors, obtaining a weight vector of influence of each vulnerability factor on the disaster causing risk of the rainstorm by adopting an expert analysis method, and establishing a rainstorm risk evaluation mathematical model for the foundation slope of the transmission line tower according to a relationship that the risk is equal to a product of danger and vulnerability; and accurately evaluating the rainstorm risk of the foundation slope of a specified transmission line tower.

Description

technical field [0001] The invention relates to a risk assessment method for slope rainstorm disasters, in particular to a slope rainstorm disaster risk assessment method for transmission line tower foundations. Background technique [0002] The transmission line is an important part of the power grid, and the safe and stable operation of the transmission line directly affects the stability of the power grid and the reliability of power supply. At present, land resources are becoming more and more precious, and there are more and more lines in mountainous areas. The power sector is inevitably faced with a large number of slope projects, and the problem of slope stability has become increasingly prominent. Due to the erosion of soil and water caused by heavy rain, generalized landslide disasters such as slope erosion, landslides, and landslides closely related to it occur from time to time, endangering the safety of power transmission line towers, and even causing the line to...

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Application Information

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IPC IPC(8): G06F19/00
Inventor 李鹏云张峰钟万里柳玉波戴沅
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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