CN212459328U

CN212459328U - Confined aquifer solute transport experimental device

Info

Publication number: CN212459328U
Application number: CN202021659407.2U
Authority: CN
Inventors: 刘凯; 邢国章; 王珊珊; 孙颖; 张垚垚; 杜荔萍; 梁锋; 李鹏; 许振浩
Original assignee: Chinese Academy of Geological Sciences
Current assignee: Chinese Academy of Geological Sciences
Priority date: 2020-08-11
Filing date: 2020-08-11
Publication date: 2021-02-02
Anticipated expiration: 2030-08-11

Abstract

The embodiment of the utility model provides a confined aquifer solute migration experimental apparatus, include: the water supply system is connected with the earth column system, the water supply system is used for providing a constant water head and controlling the water level, the earth column system is used for simulating a confined aquifer, and a plurality of overflow sampling ports are arranged on the earth column system; the flow rate of the solution in the device is controlled by adjusting the hydraulic gradient of the water supply system. The embodiment of the utility model provides a confined aquifer solute migration experimental apparatus can be used to simulate confined aquifer solute migration along vertical ascending concentration variation, simple structure, and convenient operation, the effectual material resources of using manpower sparingly to the size that control pressure was come to the difference in height of control mariaote bottle intake pipe bottom and test tube overflow sample connection, thereby control flow's size.

Description

Confined aquifer solute transport experimental device

Technical Field

The utility model relates to a soil experiment technical field especially relates to a confined aquifer solute migration experimental apparatus.

Background

Along with the rapid development of economy, the groundwater pollution is increasingly aggravated due to the increase of industrial pollution and the use amount of agricultural chemical fertilizers and pesticides, and because the in-situ experiment is limited by a plurality of factors and has high experiment difficulty, the migration and transformation rules of pollutants in soil need to be simulated and researched by an experiment device, so that the basis is provided for risk evaluation and restoration of polluted soil and reduction of groundwater resource pollution. The traditional indoor soil column experimental device can only pass through the sampling port at the top end and can not depict the concentration change of solute in the vertical direction of the soil column. Moreover, indoor soil column experiments generally simulate the migration of solutes in an aeration zone or a pressureless aquifer, and the migration characteristics of the solutes in a confined aquifer cannot be described.

SUMMERY OF THE UTILITY MODEL

The embodiment of the utility model provides a confined aquifer solute migration experimental apparatus to overcome prior art's defect.

In order to achieve the purpose, the utility model adopts the following technical scheme.

A confined aquifer solute transport experimental facility comprises: the water supply system is connected with the earth column system, the water supply system is used for providing a constant water head and controlling the water level, the earth column system is used for simulating a confined aquifer, and a plurality of overflow sampling ports are arranged on the earth column system;

the flow rate of the solution in the device is controlled by adjusting the hydraulic gradient of the water supply system.

Preferably, the water supply system comprises: the Mariotte bottle is connected with an air inlet pipe at the upper end, and a water outlet pipe is arranged on the side surface of the Mariotte bottle;

the earth pillar system comprises: the device comprises a test tube filled with a soil body, wherein the bottom of the test tube is provided with a water inlet, and the side wall of the test tube is provided with a plurality of overflow sampling ports;

and the water outlet pipe of the Mariotte bottle is connected with the water inlet of the test cylinder through a water outlet pipe.

Preferably, the pressure is controlled by controlling the height difference between the bottom of the air inlet pipe of the Marriott bottle and the overflow sampling port of the test tube, so that the flow rate of the solution is controlled.

Preferably, the air inlet pipe, the water outlet pipe and the overflow sampling port are provided with valves.

By the foregoing the technical scheme of the utility model the embodiment that provides can see out, the embodiment of the utility model provides a confined aquifer solute migration experimental apparatus has increased a plurality of sample connection at traditional earth pillar experimental apparatus's lateral wall and has been used for sampling at the different degree of depth, and the simulation solute migration is along vertical ascending concentration variation. And the bottom of the air inlet pipe of the Mariotte bottle is higher than the sampling port of the test cylinder, so that a water head difference is generated to simulate a confined aquifer, and the flow can be controlled by adjusting the water head difference. The utility model discloses simple structure, convenient operation, the effectual material resources of using manpower sparingly.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is the embodiment of the utility model provides a confined aquifer solute migration experimental apparatus's that embodiment provides a schematic structure diagram.

Reference numerals:

1. a water supply system; 2. a soil column system; 3. mariott bottles; 4. testing the cylinder; 5. an air inlet pipe; 6. a water outlet pipe; 7. a water inlet; 8. an overflow sampling port; 9. a drain pipe; 10. and (4) valve A.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present invention, and should not be construed as limiting the present invention.

As used herein, the singular forms "a", "an", "the" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and/or "comprising," when used in this specification, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof. It will be understood that when an element is referred to as being "connected" or "coupled" to another element, it can be directly connected or coupled to the other element or intervening elements may also be present. Further, "connected" or "coupled" as used herein may include wirelessly connected or coupled. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

It will be understood by those skilled in the art that, unless otherwise defined, all terms (including technical and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the prior art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

For the convenience of understanding the embodiments of the present invention, the following description will be given by way of example only with reference to the accompanying drawings, and the embodiments are not limited thereto.

The embodiment of the utility model provides a confined aquifer solute migration experimental apparatus, as shown in figure 1, include: the water supply system 1 and earth pillar system 2, wherein, water supply system and earth pillar system are connected, and water supply system 1 is used for providing invariable flood peak and control water level, and the earth pillar system is used for simulating the confined aquifer, is equipped with a plurality of overflow sample connection on it. The flow rate of the solution in the device is controlled by adjusting the hydraulic gradient of the water supply system.

The water supply system 1 includes: the Mariotte bottle 3, the upper end of Mariotte bottle 3 connects with the intake pipe 5, its side has outlet pipe 6. The earth pillar system 2 comprises: the test tube 4 is filled with soil, the bottom of the test tube 4 is provided with a water inlet 7, and the side wall of the test tube 4 is provided with a plurality of overflow sampling ports 8 (only 1 is shown in figure 1). The water outlet pipe 6 of the Mariotte bottle is connected with the water inlet 7 of the test tube through a water outlet pipe 9.

During the experiment, make the height that maliott bottle intake pipe 5 bottom is higher than test cylinder lateral wall overflow sample connection 8 through adjustment position to produce the size that flood peak difference h comes control pressure, make solution along the vertical flow of earth pillar under the pressure-bearing condition, and overflow at the sample connection and come out. Because the test tube lateral wall is equipped with a plurality of sample connection, can carry out the segmentation simulation to the earth pillar to can study the change of concentration in the earth pillar vertical direction.

To sum up, the utility model discloses can be used to simulate confined aquifer solute migration along vertical ascending concentration variation, simple structure, convenient operation, the effectual material resources of using manpower sparingly to the difference in height of control marriott bottle intake pipe bottom and a examination section of thick bamboo overflow sample connection comes the size of controlled pressure, thereby the size of controlled flow.

Those of ordinary skill in the art will understand that: the figures are schematic representations of one embodiment, and the blocks or processes in the figures are not necessarily required to practice the present invention.

Those of ordinary skill in the art will understand that: the components in the devices in the embodiments may be distributed in the devices in the embodiments according to the description of the embodiments, or may be correspondingly changed in one or more devices different from the embodiments. The components of the above embodiments may be combined into one component, or may be further divided into a plurality of sub-components.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a confined aquifer solute migration experimental apparatus which characterized in that includes: the water supply system is connected with the earth column system, the water supply system is used for providing a constant water head and controlling the water level, the earth column system is used for simulating a confined aquifer, and a plurality of overflow sampling ports are arranged on the earth column system;

2. The apparatus of claim 1, wherein the water supply system comprises: the Mariotte bottle is connected with an air inlet pipe at the upper end, and a water outlet pipe is arranged on the side surface of the Mariotte bottle;

3. The device of claim 2, wherein the amount of the solution flow is controlled by controlling the height difference between the bottom of the air inlet pipe of the marriott bottle and the overflow sampling port of the test tube to control the pressure.

4. The device of claim 2, wherein valves are provided at the inlet pipe, the outlet pipe and the overflow sampling port.