Possible maximum flood calculation method for extra-small watershed

A computing method and technology for small watersheds, applied in computing, complex mathematical operations, data processing applications, etc., can solve problems such as the difficulty in verifying the applicability of the inference formula method or the unit line method, and the high requirements for the professional ability of the calculator.

Active Publication Date: 2021-05-11
YELLOW RIVER ENG CONSULTING
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The traditional calculation method of the possible maximum flood in a small watershed is to calculate the possible maximum rainstorm first, then calculate the design rain pattern according to the hydrological manual of the area where the design watershed is located, perform deduction calculation, calculate the design net rain, and then use the inference formula method or the unit line method To calculate the maximum possible flood, the entire calculation steps are interlocking, which requires high professional ability of the calculator; in addition, for ultra-small watersheds, the ultra-short-duration rainstorm determines the size of the flood peak. As far as the current rainstorm monitoring data and technical level are concerned, , it is difficult to deduce the possible maximum torrential rain with ultra-short duration based on the measured short-duration torrential rain data, and it is also difficult to verify the applicability of the current reasoning formula method or unit line method when calculating the design flood from the design torrential rain in an ultra-small watershed

Method used

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  • Possible maximum flood calculation method for extra-small watershed
  • Possible maximum flood calculation method for extra-small watershed
  • Possible maximum flood calculation method for extra-small watershed

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 3

[0079] The present invention provides a possible maximum flood calculation method, before fitting the maximum flood peak flow and the corresponding catchment area point data, it also includes:

[0080] Obtain the flow data field of the maximum peak flow and the point data field of the catchment area point data;

[0081] Merge the flow data field and the point data field to obtain a field set;

[0082] Traversing and scanning the fields in the field set based on the field set and the preset phrase width to obtain field phrases;

[0083] Obtain the bit number of the field phrase, and calculate the frequency of occurrence of the field phrase in the same bit number;

[0084] Simultaneously, select the phrase that described frequency is greater than preset frequency as key field phrase, and obtain the start bit and end bit of described key field phrase;

[0085] Based on the start bit and the end bit, the bit width of the key field phrase is obtained, and the bit width is average...

Embodiment 4

[0098] The present invention provides a possible maximum flood calculation method, for the possible maximum flood Q 工 The verification process includes:

[0099] Calculate the catchment area F 工 , and according to the catchment area F 工 Calculate the possible maximum flood Q 工 , and calculate the possible maximum flood Q for the 工 The accuracy of verification, the specific work process includes:

[0100] Extracting the water collection shape parameters of the engineering point, wherein the shape parameters include the water collection length, width, radian, concave degree value, and convex degree value of the engineering point;

[0101] According to the catchment shape parameter of the engineering point, calculate the catchment area F 工 ;

[0102]

[0103] Among them, F 工 Indicates the water collection area, γ represents the water collection concave degree value of the engineering point, δ represents the water collection convex degree value of the engineering point, c ...

Embodiment 5

[0122] Based on Example 1, in step 1, before collecting the possible maximum flood information related to the ultra-small watershed, it includes:

[0123] Get a collection of URLs that collect information on the largest possible floods associated with very small watersheds;

[0124] Perform a traversal search for each URL in the URL collection, and the filtering interface displays the first URL that has been accessed successfully;

[0125] At the same time, preprocessing is performed on each of the first URLs, and the second URLs are obtained by screening according to the preprocessing results;

[0126] Obtain interface information of a display interface corresponding to the second URL;

[0127] Obtaining the number of times the second website has been visited, the number of times it has been reported, and the user's evaluation information on the second website from the creation time to the current time;

[0128] inputting the interface information, the number of visits, the...

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Abstract

The invention provides a possible maximum flood calculation method for an extra-small watershed, and the method comprises the steps: 1, collecting the maximum flood information related to the extra-small watershed, including the catchment area and the maximum peak flood flow; 2, plotting the collected maximum peak discharge and the corresponding catchment area in a double logarithmic coordinate system; 3, selecting a power exponent relational expression for fitting the maximum peak discharge and the corresponding catchment area point data, namely Q = a * Fb; 4, according to the fitting result and the catchment area F < work > of the engineering point, obtaining the corresponding possible maximum flood Q < work >, namely Q < work > = a * (F < work >) b; and 5, verifying the possible maximum flood Q, and transmitting and displaying a verification result. The method and device are used for obtaining the possible maximum flood according to the drainage area of an engineering point and facilitating improvement of result obtaining efficiency.

Description

technical field [0001] The invention relates to the technical field of engineering hydrology, in particular to a method for calculating the maximum possible flood in an ultra-small watershed. Background technique [0002] The traditional calculation method of the possible maximum flood in a small watershed is to calculate the possible maximum rainstorm first, then calculate the design rain pattern according to the hydrological manual of the area where the design watershed is located, perform deduction calculation, calculate the design net rain, and then use the inference formula method or the unit line method To calculate the maximum possible flood, the entire calculation steps are interlocking, which requires high professional ability of the calculator; in addition, for ultra-small watersheds, the ultra-short-duration rainstorm determines the size of the flood peak. As far as the current rainstorm monitoring data and technical level are concerned, , it is difficult to deduc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/10G06Q10/06G06Q50/26
CPCG06F17/10G06Q10/0639G06Q50/26Y02A10/40
Inventor 张金良李超群盖永岗付健陈松伟张建段文龙
Owner YELLOW RIVER ENG CONSULTING
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