Earth and rockfill dam group control cascade water release security computing method considering upstream dam bursting flood

A calculation method and technology for earth-rock dams, applied in the direction of calculation, special data processing applications, instruments, etc., can solve problems such as increased engineering investment, and achieve the effects of improving safety, avoiding overtopping, and preventing dam collapse.

Inactive Publication Date: 2017-11-07
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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Problems solved by technology

Since the planning and design of cascade reservoirs can only be roughly referenced, there is no specific method for determining the value, resulting in a certain degree of randomness i

Method used

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  • Earth and rockfill dam group control cascade water release security computing method considering upstream dam bursting flood
  • Earth and rockfill dam group control cascade water release security computing method considering upstream dam bursting flood
  • Earth and rockfill dam group control cascade water release security computing method considering upstream dam bursting flood

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Embodiment

[0041] This embodiment is a method for calculating the safety of cascade discharge of earth-rock dam group control considering upstream dam-break flood. The reservoir group targeted by the method is a dam whose upstream project quality and safety standard is a special-level dam (this embodiment is referred to as the upstream dam, or a special-level dam) called reservoir 1, and the middle reaches are multiple engineering quality dams. An earth-rock dam group composed of earth-rock dams with a safety standard of Class 2 is called Reservoir 2, and the downstream is a dam with an engineering quality and safety standard of a super-class dam (in this embodiment, it is referred to as a downstream dam, or a super-class dam). library3.

[0042] In this embodiment, the idea of ​​dam failure calculation and treatment compared with the upstream dam is roughly as follows: if the upstream super-level 2 dam breaks, through early warning, the downstream control cascade super-level 1 dam can v...

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Abstract

The invention relates to an earth and rockfill dam group control cascade water release security computing method considering upstream dam bursting flood. The method includes the steps that flood routing of upstream dam failure is computed; routing of upstream dam failure flood on the midstream is computed; the flood regulation process of the midstream is computed; routing of midstream reservoir continuous burst is computed; routing of the dam failure flood in a downstream reservoir is computed; the flood regulation process of a downstream dam is computed; the working condition is determined. By analyzing early warning on the downstream dam when an upstream dam bursts, the capacity of the downstream control dam is emptied in advance, overtopping is avoided, and dam failure is avoided. By analyzing the flood discharge margin, a very flood discharge facility is additionally arranged or the flood discharge margin is increased to further reduce the reservoir water level before the upstream dam failure flood reaches, and the security of the downstream dam is obviously improved.

Description

technical field [0001] The present invention relates to a safety calculation method for cascade drainage of earth-rock dam group control considering upstream dam-break flood, which is a hydraulic calculation method, and is a safety analysis and calculation method for earth-rock dam group control cascade discharge considering upstream dam-break flood Disposal method. Background technique [0002] Earth-rock dam is one of the most widely used, fastest-growing and most promising dam types in dam construction. The key disaster-causing factors for reservoirs formed by cascade development include: extreme weather-induced rainfall that causes excess floods, upstream tributaries caused by various factors, or cascade floods triggered by risks, especially the latter. Once the upstream fails, the downstream cascade is required to be controlled The super-grade dam has sufficient flood control capacity, which can cut off and weaken the risk of cascade transmission in the upper reaches o...

Claims

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Application Information

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IPC IPC(8): G06F19/00
CPCG16Z99/00
Inventor 刘之平郭新蕾付辉夏庆福王涛郭永鑫李甲振杨开林黄伟马慧敏
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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