Experimental device for researching groundwater level change condition of heterogeneous aquifer around pumping well

Abstract

The invention discloses an experimental device for researching groundwater level change conditions of heterogeneous aquifers around a pumping well, and relates to the technical field of groundwater level change research. The experimental device comprises: an experimental tank for simulating different aquifers of groundwater; a movable water tank used for controlling a left water head of the experimental tank; a fixed water tank used for controlling a right water head of the experimental tank; and a simulation well for simulating the underground water flow field change under the water pumping condition. The experimental device has the beneficial effects that the experimental device is simple to operate, different flow fields of underground water are changed by adjusting the fixed water tankand the movable water tank arranged on the two sides of the experimental tank, and the water level of the simulated water well is changed by starting the water pump to simulate underground water flowfield changes under the water pumping condition; the underground water level change of different aquifers can be visually observed, the water level change of the heterogeneous aquifers around the pumping well can be simulated, the experiment repeatability and operability are high, and the application prospect is good.

Description

technical field [0001] The invention relates to the technical field of research on groundwater level changes, in particular to an experimental device for studying groundwater level changes in heterogeneous aquifers around pumping wells. Background technique [0002] With the depletion of surface water resources and the rapid development of the economy and society, large-scale extraction of groundwater is not uncommon. The rapid consumption of groundwater resources can easily form a groundwater funnel, and the lateral flow of groundwater will have an obvious replenishment effect on the groundwater funnel area, seriously Affecting the groundwater flow field, the groundwater level also drops to varying degrees at different distances from the center of the funnel, especially in plain areas. Most aquifers are heterogeneous, and different permeability has different responses to artificial disturbances such as pumping. Therefore, exploring the water level changes of heterogeneous a...

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Problems solved by technology

[0003] At present, there are few studies on the influence of artificial interference such as pumping on the water level of the aquifer, and most of them focus on the migration of pollutants in groundwater or the remediation of contaminated soil. Chinese patents (such as CN105152393B) introduce the use of aeration devices such as simulated wells to study the The removal effect of pollutants in polluted groundwater and soil under aeration conditions, but it is impossible to visually monitor the change of the aeration device to the water level of the aquifer; Chinese patents (such as CN108447376A) introduce the migration and fate of nanoparticles in the underground environment There is a simulation experiment device with a monitoring well in the device, but there is no observation hole for the water level change of the underground aquifer, and the water level change cannot be directly observed; Chinese patents (CN104483240A, CN105300843A, etc.) have not realized the intuitive understanding of the impact of pumping activities on the water level change of the aquifer

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