Flood discharge ultra-strong rainfall prototype measurement method suitable for severe environment

A measurement method and technology for harsh environments, applied in rainfall/precipitation meters, measurement devices, ICT adaptation, etc., can solve problems such as inaccurate measurement, and achieve the effects of ensuring personnel safety, simple operation, and flexible testing

Pending Publication Date: 2021-08-06
KUNMING UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method suitable for measuring flood discharge and heavy rainfall in harsh environments, so as to overcome the problem of inaccurate measurement of flood discharge and heavy rainfall methods in the prior art in harsh environments

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Embodiment 1: The key points of heavy rainfall measurement in harsh environment have the following points:

[0027] (1) Design of supporting device

[0028] In a harsh environment, if the support device is set too high, the wind thrust formed by the discharge wind on the rain gauge is very strong, and the entire support device is easily blown down by the discharge wind, resulting in measurement failure; the rain gauge is installed too low, and the flood discharge and heavy rainfall form a high flow rate The water flow will form water around the rain gauge, forming water thrust, which will also affect the stability of the rain gauge, so a suitable installation height and installation method are very important. A large number of test cases in the practice of engineering prototypes show that, according to the flow rate observed by the prototype, when the supporting device is 50mm-80mm above the ground and 20mm-60mm below the ground, the installation stability of the rain g...

Embodiment 2

[0043] Embodiment 2: Utilize the measurement method in embodiment 1 to measure the super-heavy rainfall of the flood discharge of a certain engineering deep hole partial opening and full opening. Select two measuring points in the water tongue splitting and splashing area to install relevant measuring instruments. According to relevant data, the discharge wind at this position can reach 20m / s, and the site environment is very harsh. Selecting this position for specific measurement can effectively judge reliability of this method.

[0044] The installation position of the two rain gauges is about 420m away from the observation point, the supporting device is 50mm deep below the ground, and the opening methods of the deep hole gates are 2.5m and fully open.

[0045] When the gate is opened to 2.5m, the first super-rainfall intensity test is carried out.

[0046] The gate is opened continuously and slowly until it is fully opened. At this time, the total time of water discharge ...

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Abstract

The invention belongs to the technical field of water conservancy and hydropower engineering prototype observation, and relates to a flood discharge ultra-strong rainfall prototype measurement method suitable for a severe environment. Normal bearing of rainfall is guaranteed through the supporting device and the rainfall bearing device, measured values output by the rainfall sensor are collected, read and analyzed through the control system, the electromagnetic valve is remotely controlled to discharge atomized heavy rainfall in the rainfall gauge at any time, and the purpose of heavy rainfall measurement when a sluicing structure gate is continuously opened at different opening degrees is achieved. According to the invention, the rainfall intensity measurement range is 0 mm / h to 10000 mm / h; under the heavy rainfall intensity of 2700 mm / h, the rainwater drainage time in the special rain gauge is only 1.5 min. The device can more efficiently and reliably test the change rule and size of regional rainfall intensity in the continuous opening state of the gate, avoids repeated opening and closing of the gate, liberates the labor force input by manual measurement, and has the advantages of simple and flexible operation, personnel safety and accurate test.

Description

technical field [0001] The invention belongs to the technical field of prototype observation of water conservancy and hydropower projects, and relates to a prototype measurement method for flood discharge super-heavy rainfall suitable for harsh environments. Background technique [0002] In the prototype observation of high dam drainage structures, rainfall intensity is one of the most critical observation parameters. The latest relevant observation data show that the vertical length of the flood discharge atomization of the discharge structure can exceed 1.7km, and the height of the rise can exceed 300m. The heavy rainfall formed by atomization will cause the power plant to fail to operate normally, induce landslides, and block traffic. Operation, impact on power transmission and transformation systems and other adverse effects, each high dam project takes the study of rainfall intensity formed by flood discharge atomization as one of its key technologies. Due to the diffi...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): G01W1/14
CPCG01W1/14Y02A90/10
Inventor罗永钦李然雷红军杨红宣付俊峰魏海杨磊李欣
OwnerKUNMING UNIV OF SCI & TECH