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Subsurface flow exchange simulation measurement method under different groundwater recharge conditions

A measurement method and groundwater technology, applied in the direction of measurement devices, machine/structural component testing, fluid dynamics tests, etc., can solve the problems of not considering groundwater recharge conditions, and cannot accurately simulate the transient process of lateral subsurface flow exchange, etc., to achieve The effect of fast speed, high efficiency and sensitive measurement

Active Publication Date: 2019-11-15
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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  • Subsurface flow exchange simulation measurement method under different groundwater recharge conditions
  • Subsurface flow exchange simulation measurement method under different groundwater recharge conditions
  • Subsurface flow exchange simulation measurement method 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 present invention discloses a subsurface flow exchange simulation measurement method under different groundwater recharge conditions. The method comprises following steps: laying a clay layer anda quartz sand layer in sequence on the bottom of a water tank, and laying a water pipe with holes on both sides of the inner wall of the water tank; placing a river channel shape control panel in thecenter of the water tank and inserting into the quartz sand layer, and taking out the quartz sands inside the control panel, to form an artificial simulated river channel; taking out a control panel,injecting colored water into the water tank, and injecting clean water into the water pipe with holes, and in a subsurface flow exchange area, exhibiting a different shade of color by the quartz sandsalong with the lateral subsurface flow exchange; recording a migration trajectory of the color by a camera and a display; and discharging water in the water tank when color data of the subsurface flow exchange area no longer changes. The method avoids manual injection of a tracer agent, has high efficiency and high speed; can simulate lateral replenishment of groundwater to surface water; can continuously measure and obtain high-precision data, and can reuse test materials; and has sensitive measurement, and intuitively and accurately simulates the lateral subsurface flow exchange transient processes.

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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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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