High rock-fill dam medium-term food season water retaining risk rate detection method

A technology for retaining water during flood season and high rockfill dam, applied in special data processing applications, instruments, electrical and digital data processing, etc. Uncertain water retaining elevation, etc.

Active Publication Date: 2014-09-17
POWERCHINA CHENGDU ENG
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AI Technical Summary

Problems solved by technology

At present, high rock-fill dams generally adopt the method of full-section filling and rising. Before the mid-term flood season, the dam body is in the process of filling and rising, and the actual water-retaining elevation is uncertain. The previous calculation methods cannot

Method used

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  • High rock-fill dam medium-term food season water retaining risk rate detection method

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Embodiment approach

[0097] Take the implementation of the present invention in a certain high rockfill dam project on the Dadu River as an example. The dam adopts a gravel soil core rockfill dam with a height of 240m. This project is a first-class large-scale project. The permanent main buildings such as water retaining, flood discharge, water diversion and power generation are Grade 1 buildings, the permanent secondary buildings are Grade 3 buildings, and temporary buildings are Grade 3 buildings. The diversion cofferdam is combined with the rockfill dam body. If the project fails, it will not only cause huge losses, but also affect the safety of downstream projects under construction and the region. According to relevant regulations, combined with the dam type and storage capacity of the project, the upper limit of the design standard for temporary flood relief during the dam construction period is 100 years. But at present, the filling elevation of the hydropower dam is H 0It is 1496m, which ...

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Abstract

The invention relates to a hydraulic and hydroelectric engineering construction diversion risk analysis technology and aims at overcoming the shortcomings of a traditional high rock-fill dam medium-term food season water retaining risk rate detection technology, providing a novel high rock-fill dam medium-term food season water retaining risk rate detection method, accurately and reasonably quantifying the medium-term food season water retaining risk rate and providing important basis for food season security risk assessment, construction schedule formulation and the like. The uncertainty of flood prevention food season elevation is considered in the method, and a high rock-fill dam project medium-term food season water retaining risk rate mathematical model is established. The uncertainties of shutdown day number and the daily average rising speed each month are considered, and a simulating calculation model of a dam body flood preventing flood season elevation is established. The randomness of the daily average rising speed each month is subjected to quantitative analysis. The randomness of hydroelectric, hydraulic and filling construction is comprehensively considered, and the water retaining risk calculation process is provided by coupling risk elements based on a Monte-Carlo method principle. The high rock-fill dam medium-term food season water retaining risk rate detection method is suitable for high rock-fill dam medium-term food season water retaining risk rate assessment.

Description

technical field [0001] The invention relates to a water conservancy and hydropower project construction diversion risk analysis technology, in particular to a method for detecting the risk rate of high rockfill dam mid-term flood water retention. Background technique [0002] In the construction process of water conservancy and hydropower projects, construction diversion is one of the key links throughout the whole process of water conservancy and hydropower project construction. Power generation period, etc., affect the whole process of project construction. However, as a risky system, the construction diversion system will seriously affect the safety, progress and efficiency of the project itself, and may cause personal injury and property loss to the people downstream. [0003] When the mid-term flood season of a high rockfill dam adopts the temporary section of the dam body to retain water during the flood season, on the one hand, there will be safety hazards in the str...

Claims

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Application Information

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IPC IPC(8): G06F19/00
Inventor 张超
Owner POWERCHINA CHENGDU ENG
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