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Dam back open air seepage flow monitoring system and measured value attribution analysis method

A technology of monitoring system and analysis method, applied in the direction of neural learning method, measuring device, CAD numerical modeling, etc.

Pending Publication Date: 2022-03-01
NANJING AUTOMATION INST OF WATER CONSERVANCY & HYDROLOGY MINIST OF WATER RESOURCES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the deficiencies in the prior art, provide an open-air seepage flow monitoring system behind the dam and the attribution analysis method of the measured value, and solve the reservoir water seepage component and rainfall influence component in the total seepage flow under rainfall or non-rainfall conditions The separation and extraction problem of

Method used

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  • Dam back open air seepage flow monitoring system and measured value attribution analysis method
  • Dam back open air seepage flow monitoring system and measured value attribution analysis method
  • Dam back open air seepage flow monitoring system and measured value attribution analysis method

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Embodiment 1

[0039] Such as figure 1 As shown, the present invention provides a measured value attribution analysis method of an open-air seepage flow monitoring system behind a dam, comprising the following steps:

[0040] 1. Based on the location of the measuring point, topography and precipitation characteristics, determine the affected area and influencing factors of the seepage measurement value;

[0041] The rainfall characteristics are determined according to the surface watershed combined with hydrogeological conditions.

[0042] The determination of the influencing factors affecting the seepage flow in the affected area adopts the distributed hydrological model or the surface shallow water equation, the rainfall infiltration model, and the underground seepage model. The rainfall influencing factors, spatial distribution and time variation characteristics of monitoring facilities are used to establish a corresponding monitoring system.

[0043] 2. Determine the monitoring items a...

Embodiment 2

[0085] The embodiment of the present invention provides an open-air seepage monitoring system behind the dam adapted to the measured value attribution analysis method of Embodiment 1, including seepage monitoring facilities, and adding necessary monitoring items according to the components of the measured seepage data and influencing factors And monitoring facilities are used to realize the information perception of all elements, full range, all weather and all scenarios of seepage behind the dam and its main influencing factors.

[0086] The present invention first adds necessary monitoring items and monitoring facilities according to the measured data components and influencing factors of seepage, so as to realize information perception of all elements, full range, all-weather, and all-scenes of seepage behind the dam and its main influencing factors. Factors affecting the seepage volume behind the dam include not only upstream reservoir water level, downstream reservoir wate...

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Abstract

The invention discloses a dam back open air seepage flow monitoring system and a measured value attribution analysis method. The method comprises the following steps: determining seepage flow measured value influence areas and influence factors based on measuring point positions, landforms and rainfall characteristics; determining corresponding monitoring items, measuring points and instruments based on the spatial and temporal distribution of the sensitive factors in the influence area; determining lag time according to a corresponding mathematical model, and dividing the actually measured data sequence of the seepage flow into three types, i.e., a type which is only influenced by reservoir water seepage, a type which is obviously influenced by rainfall and an uncertain type; respectively constructing a rainfall-reservoir water coupling seepage data assimilation model and a reservoir water independent seepage data assimilation model according to the seepage flow measured data of the time period obviously affected by rainfall and the time period only affected by reservoir water seepage; according to the assimilated sample, respectively establishing a lightweight time convolution model of seepage flow under the influence of rainfall and only under the action of reservoir water seepage, and separating a rainfall influence component and a reservoir water seepage component according to the difference between the lightweight time convolution model and the reservoir water seepage component; accurate separation of seepage components under the rainfall condition is achieved, and support is provided for safety analysis of dam seepage.

Description

technical field [0001] The invention relates to an open-air seepage flow monitoring system behind a dam and a measurement value attribution analysis method, belonging to the technical field of dam safety monitoring and data analysis. Background technique [0002] Seepage flow monitoring is a mandatory monitoring item for large and medium-sized reservoir dam safety monitoring, and it is also the primary monitoring item for small-scale reservoir dam and embankment safety monitoring. Significance. However, it is found in actual engineering that almost all of the seepage behind the dam, especially the total seepage monitoring facilities (such as the water measuring weir behind the dam, etc.) are set in the open air, which is easily affected by rainfall factors. Long-term rainfall or heavy rainstorms are unfavorable conditions for dams, which are likely to cause uneven settlement deformation, dam surface cracking, seepage damage, and even landslides and other embankment accident...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/27G06F17/18G06F17/11G06N3/04G06N3/08G01D21/02G06F111/10G06F119/14
CPCG06F30/27G06F17/11G06F17/18G06N3/08G01D21/02G06F2111/10G06F2119/14G06N3/045
Inventor 方卫华
Owner NANJING AUTOMATION INST OF WATER CONSERVANCY & HYDROLOGY MINIST OF WATER RESOURCES
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