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Safety determination method of earth-rock dam group to control cascade water discharge considering upstream dam break flood

A determination method and technology for earth-rock dams, applied in special data processing applications, instruments, electrical and digital data processing, 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: 2018-08-10
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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 in the design. Considering that the upstream dam failure is a low-probability event after all, increasing the dam height will directly lead to a large investment in the project Increase

Method used

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  • Safety determination method of earth-rock dam group to control cascade water discharge considering upstream dam break flood
  • Safety determination method of earth-rock dam group to control cascade water discharge considering upstream dam break flood
  • Safety determination method of earth-rock dam group to control cascade water discharge considering upstream dam break flood

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Embodiment

[0041] This embodiment is a method for determining the safety of cascade discharge of earth-rock dam group control in consideration of 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 d...

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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 invention relates to a method for determining the cascade discharge safety of earth-rock dam group control in consideration of upstream dam-break flood, which is a determination method for hydraulic engineering calculation, and is a method for determining the safety of cascade discharge of earth-rock dam group control in consideration of upstream dam-break flood Analytical calculations and disposal methods. 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 o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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