Real-time cumulative rainfall storm torrent early warning method based on rainfall runoff response

A technology for mountain torrent early warning and rainfall runoff, which is applied in the field of real-time accumulated rainfall torrential rain and mountain torrent early warning, and mountain torrent early warning in small watersheds. The early warning is reliable, the early warning period is satisfied, and the effect of improving accuracy

Active Publication Date: 2020-08-18
SICHUAN UNIV
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For small mountainous watersheds, considering that there are often significant washouts and silting disasters in the process of heavy rain and mountain torrents in mountainous watersheds, it is difficult to obtain better early warning indicators through the inverse method of water level-flow-rainfall, and it is prone to missed alarms , False alarm phenomenon, the accuracy of mountain torrent warning needs to be improved

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Real-time cumulative rainfall storm torrent early warning method based on rainfall runoff response
  • Real-time cumulative rainfall storm torrent early warning method based on rainfall runoff response
  • Real-time cumulative rainfall storm torrent early warning method based on rainfall runoff response

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] In this embodiment, taking the rainstorm and mountain torrent early warning of a small watershed in a mountainous area—a tributary of the Minjiang River as an example, the method of real-time cumulative rainfall torrential rain and torrent warning based on the rainfall runoff response provided by the present invention is described in detail.

[0027] The drainage area of ​​the small watershed in this mountain area is 364km 2 , a hydrological station is set up at the outlet of the basin to observe the process of flood flow.

[0028] (1) Select the mountainous small watershed river section that needs to be warned of rainstorm and mountain torrents as the target river section, collect the flood characteristic data of 3 storm torrents in the target river section and the rainfall characteristic data of the corresponding rainstorm of these 3 storm torrents; The control sections of the flood characteristic data of the three storm torrents are the same, and the rainfall station...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a real-time accumulated rainfall rainstorm mountain torrent early warning method based on mountainous area small watershed rainfall runoff response. The method comprises the following steps: (1) selecting a small watershed river reach of a mountainous area needing rainstorm mountain torrent early warning as a target river reach, and searching flood characteristic data of n-stage rainstorm mountain torrent of the target river reach and rainfall characteristic data of stage rainstorm corresponding to the n-stage rainstorm mountain torrent; Determining a flood abrupt rise time point of each field rainstorm mountain flood according to the flood characteristic data; (2) analyzing the n times of rainstorm mountain torrent; (3) determining a critical cumulative rainfall index for sending out rainstorm mountain torrent early warning; (4) 1, when rainstorm occurs at the upstream of the target river reach, collecting time period rainfall data of field rainstorm, and calculating accumulated rainfall from the beginning of rainfall to different time period rainfall data collection time points in real time; And 2, when the accumulated rainfall capacity in the step (1) reaches a critical accumulated rainfall capacity index for giving out rainstorm mountain torrent early warning, immediately giving out the rainstorm mountain torrent early warning.

Description

technical field [0001] The invention belongs to the field of disaster prevention and mitigation of rainstorm and mountain torrent disasters, and relates to a real-time accumulated rainfall rainstorm and torrent early warning method based on rainfall runoff response, which is suitable for early warning of torrential rain and torrent in small watersheds in mountainous areas. Background technique [0002] Mountain torrent disasters refer to flood disasters caused by rainfall in hilly areas, as well as mudslides and landslides induced by mountain torrents, which cause losses to the national economy and people's lives and property. They are characterized by suddenness, concentrated water volume, and large destructive power. . The current early warning system for rainstorm and mountain torrent disasters in my country generally uses rainfall and water level as early warning indicators, and the determination of water level parameters is mainly based on the relationship between rainf...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/28G08B21/10
CPCY02A10/40Y02A50/00
Inventor 王协康刘兴年黄尔闫旭峰曹辉周家文许泽星
Owner SICHUAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products