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Flow field analysis method for earth and rockfill dam seepage flow monitoring and calculation

A technology for seepage and earth-rock dams, applied in calculation, special data processing applications, instruments, etc., can solve the problems of no water on the surface and inability to monitor seepage, and achieve the effect of simple and practical methods

Inactive Publication Date: 2015-05-13
NANJING NARI GROUP CORP +1
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Problems solved by technology

However, when the dam is built on a deep permeable layer and the effect of foundation anti-seepage treatment is limited, the seepage water often forms a submerged layer below a certain depth of the dam base layer. In this way, there is no water on the surface and cannot pass through traditional interception and water collection. In view of this, it is necessary to establish a method for monitoring and calculating seepage that is different from the past

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  • Flow field analysis method for earth and rockfill dam seepage flow monitoring and calculation

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Embodiment Construction

[0021] The present invention will be specifically introduced below in conjunction with the accompanying drawings and specific embodiments.

[0022] Glossary:

[0023] (1) Piezometric tube: groundwater level observation facility. Drill a hole from the surface to the depth of the formation, place and fix a permeable pipe in the hole, so as to form a water column in the pipe that is equal to the groundwater level around the pipe, and measure the liquid level of the water column in the pipe by putting down the measuring device at the mouth of the pipe. The corresponding groundwater level.

[0024] (2), diving: groundwater with free surface.

[0025] (3) Seepage field: The water flows through the porous medium, and the spatial range containing flowing water is formed in the solid.

[0026] (4) Isowater line: the curve formed by the points with equal water levels in the seepage field, which is similar to the contour line on the terrain.

[0027] (5) Streamline: A curve formed by...

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Abstract

The invention discloses a flow field analysis method for earth and rockfill dam seepage flow monitoring and calculation. The flow field analysis method for earth and rockfill dam seepage flow monitoring and calculation comprises the steps of firstly measuring the underground water level distribution situation in a seepage field, then conducting two-dimensional analysis calculation on underground water level and accordingly obtaining total seepage flows of a flow field. The flow field analysis method for earth and rockfill dam seepage flow monitoring and calculation has the advantages that the novel method for earth and rockfill dam seepage flow monitoring and calculation is specifically a flow filed analysis method, is suitable for analysis of the dam foundation phreatic layer seepage field situation of a dam built on a deep water-permeating layer foundation and comprises the steps of monitoring amount determination, measuring point arrangement, measurement means and complete matching of a result calculating method, the problem that a traditional closure water-collection measurement method cannot be applied to the deep water-permeating layer dam is thoroughly solved, and the flow field analysis method is simple and feasible.

Description

technical field [0001] The invention relates to an earth-rock dam seepage monitoring and calculation method, specifically a flow field analysis method, and belongs to the technical field of dam safety monitoring and evaluation. Background technique [0002] In hydropower projects, more and more earth-rock dams are built on deep permeable foundations. According to the requirements of relevant specifications, the seepage rate of earth-rock dams is a must-test item for dam prototype monitoring, which is very important for evaluating the safety of dams . [0003] In the prior art, the foundations of most dams have good anti-seepage properties or have undergone special anti-seepage treatment, and most of the seepage water is distributed at the bottom of the dam body or in the shallow foundation layers, which withstand high water heads and have relatively high anti-seepage performance. Therefore, the traditional seepage monitoring method is: choose a suitable location in the seep...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06Q50/06
Inventor 潘琳凌骐宋永占周晔崔岗陈俊生周小春韩世栋
Owner NANJING NARI GROUP CORP
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