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Mountain flood disaster forming time determination method

A technology to determine the method and time, which is applied in special data processing applications, instruments, climate change adaptation, etc., and can solve problems such as the difficulty of accurately determining the time of disaster and the uncertainty of the maximum rainfall

Active Publication Date: 2017-08-22
ZHENGZHOU UNIV
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  • Application Information

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Problems solved by technology

The occurrence time of mountain torrent disasters is generally obtained through flood flow data or flood surveys. However, in areas where flood flow data are lacking or flood surveys have not been carried out, or the occurrence time of mountain torrent disasters is far away, it is difficult to accurately determine the disaster time through flood surveys. The maximum rainfall in the period before the time of the disaster from the measured rainfall data cannot be determined

Method used

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  • Mountain flood disaster forming time determination method

Examples

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Embodiment 1

[0030] The following is a detailed example explanation of the method for determining the time of flash flood disaster:

[0031] In response to the heavy rain in Henan Province in early July 2016, after flood investigation, the Li Fan Group of Balifan Township was affected by the long-term heavy rain at around 9:30 am on July 1, 2016. The river rose and flooded into the house. , resulting in certain economic property losses. The present invention is described in detail by taking the group of Li Fan, Bali Fan Township, Xinxian County as an example.

[0032] According to the field investigation data of mountain torrent disasters, the shape of the control section of the river where the Lifan Group of Balifan Township is located is as follows: figure 1 As shown, the composition of the river bed is as follows figure 2 shown.

[0033] The upstream control basin area of ​​the river course control section of Lifan Group 1, Balifan Township is 167.16km 2 , the channel length is 31....

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Abstract

The invention discloses a mountain flood disaster forming time determination method, belongs to the technical field of mountain flood disaster early warning, and aims to provide the mountain flood disaster forming time determination method which solves the problem in reasonable determination of maximum rainfall in a period corresponding to disaster forming flood during operations of determining an early warning index by utilizing a statistical method and performing testing and rechecking on the early warning index. According to the method, an average value of a disaster forming time initial value and disaster forming flow occurrence time is taken as disaster forming time, wherein the disaster forming time initial value t(initial) is determined according to a critical curve of rainstorm and an ''accumulated individual rainfall-first 1h rainfall-time'' curve; the disaster forming time initial value t(initial) refers to time corresponding to a first intersection point of the two curves; and the disaster forming flow occurrence time t(flow) is equal to tm-delta t, delta t is a time difference between the disaster forming time initial value and the disaster forming flow occurrence time, and tm is peak occurrence time. The method can be used for determining, testing and re-checking the early warning index of a mountain flood disaster.

Description

technical field [0001] The invention belongs to the technical field of mountain torrent disaster early warning, and in particular relates to a method for determining the time when a mountain torrent disaster occurs. Background technique [0002] Rainfall is the direct factor inducing mountain torrent disasters, and critical rainfall is currently regarded as the most important early warning indicator of mountain torrent disasters in my country. At present, the statistical method or the hydrological hydraulic method is generally used to determine the early warning indicators of mountain torrent disasters. The statistical method is mainly based on the maximum rainfall in the period before the time of the corresponding torrent disaster. However, when it is difficult to determine the time of disaster , the critical rainfall is generally calculated by using the maximum rainfall in each rainfall period, which affects the accuracy of the early warning indicators to a certain extent;...

Claims

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Application Information

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IPC IPC(8): G06F19/00G08B21/10
CPCG08B21/10G16Z99/00Y02A50/00
Inventor 原文林卢璐刘美琪高倩雨王燕云吴承君
Owner ZHENGZHOU UNIV
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