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
CN110455686AActive Publication Date: 2019-11-15HOHAI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
HOHAI UNIV
Publication Date
2019-11-15

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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.
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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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