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Disaster-causing precipitation threshold value division method and system for precipitation type landslide hazard of power grid channel

A precipitation-type and channel-based technology, which is applied in excavation, infrastructure testing, construction, etc., can solve the problems of lack of precipitation threshold for precipitation-type landslide disasters, and achieve the effects of improving prediction and early warning capabilities, clear thinking, and strong practicability

Active Publication Date: 2019-03-26
STATE GRID HUNAN ELECTRIC POWER +2
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a method and system for dividing the disaster-causing precipitation threshold of precipitation-type landslide disasters in power grid channels, which is used to solve the technical problem of lack of research on the disaster-causing precipitation thresholds of precipitation-type landslide disasters in the linear area of ​​power grid channels

Method used

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  • Disaster-causing precipitation threshold value division method and system for precipitation type landslide hazard of power grid channel
  • Disaster-causing precipitation threshold value division method and system for precipitation type landslide hazard of power grid channel
  • Disaster-causing precipitation threshold value division method and system for precipitation type landslide hazard of power grid channel

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Embodiment 1

[0054] The method for dividing the disaster-causing precipitation threshold value of the grid channel precipitation type landslide disaster of the present embodiment includes the following steps:

[0055] S1: Obtain geological condition evaluation data, topographical data, historical daily precipitation data of meteorological stations in the past 20 years and historical data of geological disasters in power grid channels obtained from the census of land and resources departments. The historical data of geological disasters in power grid channels include: line operation and maintenance units in the past 10 years The reported information on the geological disasters secondary to rainstorms near the transmission line can be used to obtain the specific location of the geological disasters near the line through the coordinates of the tower.

[0056] S2: Query the census data of the land department. The census data of geological conditions released by the Ministry of Land and Resourc...

Embodiment 2

[0082] This embodiment is an application example of Embodiment 1 applied to the western region of the Sichuan Basin in July 2018. A method for dividing the disaster-causing precipitation threshold of a power grid channel precipitation-type landslide disaster in this embodiment includes the following steps:

[0083] S1: Data collection.

[0084] Collect the geological condition evaluation data obtained from the census of the land department; collect the DEM data of the GIS terrain digital elevation model, the data resolution is 100m*100m; collect the daily precipitation data of the local meteorological stations in the past 20 years; collect the historical data of geological disasters in the power grid channel.

[0085] S2: Classification of geological conditions for power grid channels.

[0086] figure 2 It is the national geological condition hazard assessment grade publicly released by the Ministry of Land and Resources. This map can be obtained publicly from the relevant ...

Embodiment 3

[0099] This embodiment provides a computer system, including a memory, a processor, and a computer program stored in the memory and operable on the processor. When the processor executes the computer program, the steps in any of the foregoing embodiments are implemented.

[0100] In summary, the present invention aims at the linear distribution characteristics of power transmission channels, analyzes the precipitation characteristics of power grid channels under different environmental conditions, and delimits scientific disaster-causing precipitation thresholds. The prediction and early warning ability of landslide disaster.

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Abstract

The invention discloses a disaster-causing precipitation threshold value division method and system for a precipitation type landslide hazard of a power grid channel. The method comprises the steps that the geological condition evaluation data, the topographic data, historical daily precipitation data of about 20 years of the meteorological station and the geologic hazard historical data in the power grid channel are acquired, wherein the data are obtained through general investigation of the land department; according to the geological condition evaluation data and the topographic data of thecounty-level administrative region where the power grid channel passes, the geologic hazard danger level of the section of the power grid channel is determined; based on the historical daily precipitation data of about 20 years of the meteorological station, the lowest disaster-causing threshold value of short-time heavy precipitation and the lowest disaster-causing threshold value of accumulatedprecipitation are determined; and according to the geological condition level of the power grid channel, the lowest disaster-causing threshold value of short-time heavy precipitation and the lowest disaster-causing threshold value of effective accumulated precipitation, disaster-causing precipitation threshold value division of the precipitation type landslide hazard of the power grid channel iscarried out. By means of the method and system, the prediction and pre-warning capacity of the precipitation type landslide hazard of the power grid channel can be effectively improved.

Description

technical field [0001] The invention relates to the technical field of power grid protection, in particular to a method and system for dividing the disaster-causing precipitation threshold of a power grid channel precipitation-type landslide disaster. Background technique [0002] In recent years, with the rapid development of China's power grid, the operating voltage level of the power grid system has been continuously improved, and the scale of the power grid has been continuously expanded. With the construction of high-voltage and long-distance transmission lines such as "West-to-East Power Transmission", more and more important lines pass through dangerous terrain areas such as mountains, hills, rivers and lakes. During the summer rainy season, heavy rain disasters occur frequently, and heavy rain will bring a large amount of precipitation in a short period of time, which will have a huge scouring effect on the surface and easily cause secondary landslide disasters. Amo...

Claims

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Application Information

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IPC IPC(8): E02D33/00E02D17/20
CPCE02D17/20E02D33/00
Inventor 陆佳政李丽郭俊李波徐勋建怀晓伟
Owner STATE GRID HUNAN ELECTRIC POWER
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