CN203338666U - A Confined-Underwater Aquifer Experimental Simulator - Google Patents

Abstract

The utility model discloses a confined-unconfined aquifer experiment simulation device. The main body of the device is a simulation tank which is loaded with sandy soil. Two sides of the simulation tank are respectively connected with an adjustable overflow tank which can control a boundary water level of the simulation tank. The edge of the upper part of the tank body is an organic glass support plate which forms a relatively sealing confined environment along with an overlaying rubber gasket and an organic glass cover plate, and the confined environment is used for the simulation of the changes of an underground water level of the confined aquifer. When the cover plate is removed, the changes of an underground water level of the unconfined aquifer can be simulated. The front and back surfaces of the simulation tank are respectively provided with a plurality of piezometric tube nozzles which are respectively connected with piezometric tubes on a right piezometric plate through rubber hoses, thereby forming an integrated observation system. The simulation device can simulate the changes of the boundary water level, the changes of the underground water level of the unconfined aquifer, and the underground water level of the confined aquifer. By utilizing a drainage hole at the lower part of the simulation tank, the dynamic changes of the water levels of the unconfined and unconfined aquifers under the condition of drainage can be simulated. The simulation device is advantageous by achieving the confined-unconfined aquifer simulation experiment by utilizing the same device.

Description

A Confined-Underwater Aquifer Experimental Simulator

technical field

The utility model relates to relevant knowledge of hydrogeology, and is related to the simulation experiment of researching a pressurized aquifer and a submerged aquifer. the

Background technique

The water in the first aquifer to have a surface in the saturated zone is called submerged. Diving without a bulkhead, or with a partial bulkhead. The water surface is not under pressure, and usually runs off from a place with a high water level to a place with a low water level under the action of gravity; while the pressurized water filled between the two water-proof roofs and the bottom plate is affected by groundwater recharge and discharge, resulting in The water level of the aquifer changes dynamically. Therefore, it is of great significance to design a comprehensive simulation device with reasonable structure and simple and convenient operation to reproduce the groundwater dynamics of the two. the

At present, the simulation test devices for simulating diving and confined aquifers are relatively simple in function and have few changing conditions. The device controls the dynamic change of the groundwater flow field inside the simulation tank by continuously changing the boundary conditions, so as to achieve the ultimate purpose of demonstration and research. the

Utility model content

The purpose of this utility model is to provide a comprehensive experimental simulation device for confined-diving aquifers with reasonable structure and convenient operation, which can demonstrate and study the hydrogeological characteristics of diving and confined water, and reproduce the diving when the boundary conditions change. and dynamic changes of water level in confined aquifers. the

The utility model is a pressurized-submarine aquifer experimental simulation device, the main body is a simulated tank filled with sand and soil, both sides of the simulated tank are connected with adjustable overflow tanks, and there are several pressure measuring pipe joints on both sides of the tank body, connected to The port inside the mouth is wrapped with a fine wire mesh, which is connected to the pressure measuring tube on the pressure measuring plate through a rubber tube. The upper edge of the tank is a plexiglass support plate, which can form a relatively closed relationship with the rubber pad and the upper plexiglass cover. In a pressurized environment, there is a section of filter pipe wrapped with a fine wire mesh at the lower part of the simulated tank. the

When using the utility model device, the following tests can be carried out:

1. Observe changes in diving and confined water levels

Adjust the height of the overflow tanks on the left and right sides to keep the groundwater level in the test tank in a flowing state. After the water levels in the two tanks are stable, measure the water level changes of each piezometric tube, record the data in real time, and draw the diving contour. Place a rubber pad on the edge of the tank and cover it with a plexiglass cover, and tighten the screws. Follow the above steps to get the pressure water level line. the

2. Open the water discharge valve at the lower part of the tank, and test the diving and pressurized water level changes under this condition respectively

Open the water discharge valve, observe and record the diving and pressurized water level change data respectively, and draw the isowater line under this condition. the

The utility model has the advantages of reasonable structure, simple and convenient operation, and strong comprehensiveness, and realizes the requirement of using the same device to complete the pressure-bearing and submerged aquifer simulation tests. the

Description of drawings

Fig. 1 is a structural schematic diagram of a pressurized-phreatic aquifer experimental simulation device of the present invention, and Fig. 2 is a left view of Fig. 1 . the

Marking: 1-return pipe; 2-inlet pipe; 3-water supply pipe; 4-overflow pipe; 5-water level regulator; 6-nut; 7- lug with nut connected to the water level tank; 8-water level tank ;9-overflow tank; 10-water supply tank; 11-handle; 12-screw; 13-threaded support; 14-valve; 15-threaded hole; 16-plexiglass cover; Pad; 18-support plate; 19-triangular bracket; 20-imitation tank; 21-buffer plate with small holes; 22-pressure measuring nozzle; 23-wrapped wire mesh; Water discharge valve; 26-pressure measuring plate; 27-pressure measuring tube; 28-rubber tube; 29-water supply valve

Detailed ways

In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail below in conjunction with the accompanying drawings. the

As shown in Figure 1, a kind of pressurized-submarine aquifer experimental simulation device of the present utility model comprises the simulation tank 20 that is housed in sand and soil, respectively has a buffer plate 21 that is punched with small holes on the left and right sides in the simulation tank, can prevent Simulates a sandy clog in the tank. The water inlet and outlet holes at both ends of the tank body are connected with a plexiglass support plate 18 at the opening of the simulated tank, supported by a triangle bracket 19, the support plate is covered with a rubber pad 17, and several small threaded holes 15 are provided on the support plate and the rubber pad. There is a plexiglass cover plate 16 with threaded holes above the simulation tank. When the plexiglass cover plate is covered, the support plate, rubber pad and plexiglass cover plate form a relatively closed environment, which can simulate a confined aquifer. There are several pressure measuring nozzles 22 on the front and rear sides of the simulation tank, which are connected to the pressure measuring tube 27 of the pressure measuring plate 26 through rubber tubes 28 . There is a water discharge pipe 24 with a small hole in the bottom of the simulation tank, and its water filter end stretches into the tank body, and the outside is wrapped with a silk screen 23, and the water discharge pipe below is connected with a water discharge valve 25. Both sides of the simulation tank are respectively connected with an adjustable water level tank 8, the water level tank has an overflow tank 9 and a water supply tank 10, the water supply tank is connected to the water storage tank through the water inlet pipe 2, and another water supply pipe 3 connected to the water supply tank is connected to the inlet On the water valve 14, it communicates with the simulation tank. One end of the return pipe communicates with the overflow tank, and the other end extends into the water storage tank. Water level regulator 5 is arranged at 8 start places of adjustable water level tank. The water level regulator is equipped with nuts 6 at the upper and lower ends of the simulated tank body, a threaded support 13, and a threaded lug 7 connected with the water level tank. Stretch in the support and rotate with it, and the other end is equipped with a handle 11. the

Before the test, the loose aquifer sand is put into the simulation tank 20 according to the compactness standard of the loose aquifer sand to keep the coupling between the aquifer sand and the boundary. Close the water inlet valve 14, the water discharge valve 25 and the water supply valve 29 simultaneously. the

In the test, first water is supplied through the water inlet pipe 2, and after the water supply tank 10 is filled with water, the water inlet valve 14 is opened to fill the aquifer with water, so that the sand is in a saturated state. When the water level of the aquifer reaches a certain height, open the water supply valve 29, utilize the water level regulator 5 to adjust the height of the water level tank 8, and control the boundary water level of the aquifer. Adjust the height of the overflow tanks on the left and right sides so that the groundwater level in the test tank maintains a flowing state. After the water levels in the two tanks are stable, record the data in each piezometric tube 27 in real time. Place the rubber pad 17 on the tank edge support plate 18 and cover the plexiglass cover plate 16, insert the screw into the screw hole 15 and tighten it, adjust the height of the overflow tank on the left and right sides, after the water level in the two tanks is stable, record each in real time The data in the pressure measuring tube 27. Open the drain valve 25, respectively observe and record the variation data of diving and pressurized water level, and draw the isowater line under this condition. the

The above examples only illustrate the technical structure and characteristics of the utility model, and all equivalent changes or modifications made according to the essence of the utility model device should be covered within the protection scope of the utility model. the

Claims (6)

1. a Confined-Unconfined Aquifer experimental simulation device, is characterized in that this apparatus main body is one the simulated slot of sand to be housed, and the simulated slot both sides are connected with respectively and can regulate and control overflow groove, utilize both sides overflow groove height change can regulate the border water level of simulated slot.The cell body top edge is organic glass back up pad and below triangular plate support, it with on cover rubber blanket, the organic glass cover plate can form a relative closure pressure-bearing environment, can simulate the confined aquifer WATER LEVEL CHANGES.When the organic glass cover plate removes, but the simulated dive water-bearing zone.

2. a Confined-Unconfined Aquifer experimental simulation device, is characterized in that all there are some pressure measurement pipe nipples on the simulated slot two sides, by the piezometric tube on it and rubber tube and right side pressure measurement plate, joins.The simulated slot below discharges water a little, and simulation, under Escape condition, is dived under water or the confined aquifer SEA LEVEL VARIATION.

3. a kind of Confined-Unconfined Aquifer experimental simulation device as claimed in claim 1, is characterized in that the simulated slot both sides all are connected with regulatable overflow groove, the border water level that the height by regulating the both sides overflow groove can the control simulation groove.

4. a kind of Confined-Unconfined Aquifer experimental simulation device as claimed in claim 1, it is characterized in that the cell body top edge is organic glass bar and supported underneath plate, the organic glass cover plate on it and rubber blanket, top can form a relative closure pressure-bearing environment, the variation that can simulate the confined aquifer underground water table.

5. a kind of Confined-Unconfined Aquifer experimental simulation device as claimed in claim 2, the dewatering orifice that it is characterized in that the simulated slot bottom is to be tied with the filter pipe of spun yarn net by an outside.

6. a kind of Confined-Unconfined Aquifer experimental simulation device as claimed in claim 2, is characterized in that in all pressure measurement pipe nipples all with twining silk screen.

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