A simulation measurement method for subsurface flow exchange under different groundwater recharge conditions

A measurement method and technology for groundwater, which are applied to measurement devices, testing of machine/structural components, fluid dynamics tests, etc., can solve the problems of inability to accurately simulate the transient process of lateral undercurrent exchange, and failure to consider groundwater recharge conditions. Fast, efficient and sensitive measurement results

Active Publication Date: 2021-04-27
HOHAI UNIV
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Problems solved by technology

[0004] Purpose of the invention: The purpose of the present invention is to provide a simulation measurement method for subsurface flow exchange under different groundwater recharge conditions, which solves the problem in the prior art that groundwater recharge conditions are not considered and the transient process of lateral subsurface flow exchange cannot be accurately simulated

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  • A simulation measurement method for subsurface flow exchange under different groundwater recharge conditions
  • A simulation measurement method for subsurface flow exchange under different groundwater recharge conditions
  • A simulation measurement method for subsurface flow exchange under different groundwater recharge conditions

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with accompanying drawing.

[0024] Such as Figure 1 to Figure 3 Shown is the measuring device that the present invention adopts, comprises the first water tank 1 and the second water tank 2, is provided with water tank 8 above the water tank, and water tank 8 is long 1.8m, wide 100cm, high 10cm, and manufacturing material is plexiglass, and the bottom of water tank 8 is laid One layer of smooth thickness is the clay layer 11 of 5mm, laying one deck of smooth thickness is the quartz sand layer 12 of 7cm on the clay layer 11, and the effect of clay layer 11 is to prevent that the quartz sand is washed away by water, is used to keep the quartz sand. Stablize. Water tank 8 is inclined to place, and its left side bottom is fixed with elevating platform 6, can change the slope by adjusting the height of elevating platform 6, thereby adjusts the height of water tank 8, prevents water tank 8 internal accumu...

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Abstract

The invention discloses a simulation measurement method for subsurface flow exchange under different groundwater supply conditions, which comprises the following steps: laying a clay layer and a quartz sand layer at the bottom of a water tank in sequence, laying water pipes with holes on both sides of the inner wall of the water tank; placing a channel shape control plate on the The center of the water tank is inserted into the quartz sand layer, and the quartz sand inside the control board is taken out to form an artificially simulated river channel; the control board is taken out, colored water is injected into the water tank, and clear water is injected into the perforated water pipe. Inside, the quartz sand shows different shades of color with the lateral undercurrent exchange; the migration track of the color is recorded by the camera and display; when the color data of the undercurrent exchange area no longer changes, the water in the tank is discharged. The invention avoids manual injection of tracers, and has high efficiency and fast speed; it can simulate the lateral supply of groundwater to surface water; it can continuously measure high-precision data, and test materials can be reused; it is sensitive and intuitive to measure, and can accurately simulate lateral Undercurrent exchange transient process.

Description

technical field [0001] The invention relates to a method for simulating and measuring the water volume exchange of the subsurface layer in the bank zone, in particular to a method for simulating the measurement of the subsurface exchange under different groundwater supply conditions. Background technique [0002] The hypoflow zone is an interlaced area of ​​energy cycle and material exchange between shallow groundwater and surface water in the riverbed. In this mixed area, there are dissolved gas concentration gradients, organic life body concentration gradients, pH gradients, and temperature gradients. These physical, biological and chemical gradients provide an important living environment for many invertebrates and are hotspots for biodiversity research; these gradients also lead to biogeochemical reactions, which ultimately affect the water quality of rivers. [0003] Undercurrent exchange can be divided into vertical underflow exchange in the riverbed underflow zone and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N13/00G01M10/00
CPCG01M10/00G01N13/00
Inventor 贾其萃杜经纬陈炳达方向元熊玉龙袁越陈孝兵
Owner HOHAI UNIV
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