CN209841849U - Coral reef island groundwater desalination test simulation system - Google Patents
Coral reef island groundwater desalination test simulation system Download PDFInfo
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- CN209841849U CN209841849U CN201920419632.XU CN201920419632U CN209841849U CN 209841849 U CN209841849 U CN 209841849U CN 201920419632 U CN201920419632 U CN 201920419632U CN 209841849 U CN209841849 U CN 209841849U
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Abstract
The utility model discloses a coral reef island groundwater desalination test analog system belongs to groundwater desalination simulation detection technical field. The coral reef island underground water desalination test simulation system comprises: the medium filling area is arranged in the liquid filling area and is coaxial with the liquid filling area; a medium is arranged in the medium filling area, a mixed solution is arranged in the liquid filling area, the top of the medium is flush with the liquid level of the mixed solution, and the mixed solution is formed by mixing a sodium chloride solution and a thickening agent; the precipitation device is arranged above the medium filling area, and a water outlet of the precipitation device is aligned to the top of the medium filling area; the fade detection device may be inserted into the media fill zone. The utility model discloses coral reef island groundwater desalination test analog system can be indoor carry out coral reef island groundwater desalination test simulation, can reveal fresh water coral reef secret fresh water's mechanism of operation.
Description
Technical Field
The utility model relates to a groundwater desalination simulation detects technical field, in particular to coral reef island groundwater desalination test analog system.
Background
The fresh water lens is an underground fresh water resource which floats on the sea water due to the density difference of the saltwater and the freshwater and is unique as if the lens exists in a sea island. Under the special geological conditions of the coral reef island, the underground fresh water lens body becomes the main fresh water source of the island.
Because the former understanding of the formation and operation mechanism of the underground fresh water of the island is not comprehensive, unreasonable phenomena such as over-exploitation, water pollution and the like are frequently generated, the reserve of the available fresh water is sharply reduced, and the life and the environmental quality of residents are seriously influenced.
However, the mechanism of formation and operation of underground fresh water in islands has not been studied in the prior art.
Disclosure of Invention
The utility model provides a coral reef island groundwater desalination test analog system has solved or has partially solved among the prior art to the island secret fresh water form operation mechanism carry out the problem of research technique.
In order to solve the technical problem, the utility model provides a coral reef island groundwater desalination test analog system includes: the device comprises a precipitation device, a medium filling area, a liquid filling area and a desalination detection device; the medium filling area is arranged in the liquid filling area, and the medium filling area is coaxial with the liquid filling area; a medium is arranged in the medium filling area, a mixed solution is arranged in the liquid filling area, the top of the medium is flush with the liquid level of the mixed solution, and the mixed solution is formed by mixing a sodium chloride solution and a thickening agent; the precipitation device is arranged above the medium filling area, and a water outlet of the precipitation device is aligned to the top of the medium filling area; the fade detection device may be inserted into the media fill region.
Further, the precipitation apparatus comprises: a water inlet pipe, a flowmeter and a shower head; the water outlet of the water inlet pipe is provided with the shower head, and the shower head is aligned to the top of the medium filling area; the flowmeter is arranged on the water inlet pipe.
Further, the medium filling region includes: a first fill cylinder; a bottom plate is arranged at the bottom of the first filling cylinder body, the first filling cylinder body is arranged in the liquid filling area, and the medium is arranged in the first filling cylinder body; and a plurality of water permeable holes are uniformly arranged on the wall of the first filling cylinder body at intervals.
Further, the first fill cartridge further comprises: water retaining edges; the water retaining edge is coaxial with the first filling cylinder; the bottom of the water retaining edge is arranged at the top of the first filling cylinder; the diameter of the bottom of the water retaining edge is smaller than the diameter of the top of the water retaining edge.
Furthermore, the shape of the water retaining edge is in a circular truncated cone shape.
Further, the liquid-filled region includes: a second fill cylinder; the bottom of the second filling cylinder is provided with a baffle; the mixed solution is disposed within the second fill cylinder.
Further, the fade detection device comprises: a salinity meter and a long and thin needle tube; the sampling end of the long and thin needle tube can be inserted into the medium filling area; the sampling end of the long and thin needle tube is detachably connected with the salinity meter.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
because the medium filling area is arranged in the liquid filling area, the medium filling area is coaxial with the liquid filling area, the medium is arranged in the medium filling area, the mixed solution is arranged in the liquid filling area, the top of the medium is flush with the liquid level of the mixed solution, and the mixed solution is formed by mixing the sodium chloride solution and the thickening agent, the periphery of the medium is affected by the permeation of the mixed solution by utilizing the high consistency of the mixed solution and the low permeability of the medium, the simulation of the desalination of groundwater is realized, because the precipitation device is arranged above the medium filling area, and the water outlet of the precipitation device is aligned to the top of the medium filling area, the natural precipitation can be simulated by the precipitation device, because the desalination detection device can be inserted into the medium filling area, the desalination detection device is inserted into the medium filling area for sampling, the salinity of the sampled liquid is measured, and the boundary and the transition section of fresh, the method is characterized by establishing the relation among precipitation, permeability coefficient and fresh water spatial distribution, analyzing the processes of production, transformation and dissipation of the fresh water lens body, revealing the lens body formation mechanism, carrying out coral reef island underground water desalination test simulation indoors and revealing the operation mechanism of fresh water coral reef underground fresh water.
Drawings
Fig. 1 is a block diagram of a coral reef island groundwater desalination test simulation system provided by an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a coral reef island groundwater desalination test simulation system provided by an embodiment of the present invention;
FIG. 3 is a schematic diagram showing the arrangement of a liquid filling area and a medium filling area of the simulation system for the groundwater desalination test of the coral reef island in FIG. 1;
fig. 4 is an exploded view of the medium-filled region of the coral reef island groundwater desalination test simulation system in fig. 1.
Detailed Description
Referring to fig. 1-3, the embodiment of the utility model provides a coral reef island groundwater desalination test analog system includes: precipitation device 1, medium filling area 2, liquid filling area 3 and desalination detection device 4.
The medium-filled region 2 is disposed within the liquid-filled region 3, and the medium-filled region 2 is coaxial with the liquid-filled region 3.
The medium filling area 2 is internally provided with a medium, the liquid filling area 3 is internally provided with a mixed solution, the top of the medium is flush with the liquid level of the mixed solution, and the mixed solution is formed by mixing a sodium chloride solution and a thickening agent.
The precipitation device 1 is arranged above the medium filling area 2, and the water outlet of the precipitation device 1 is aligned to the top of the medium filling area 3.
Fade detection device 4 may be inserted into media fill zone 2.
In the embodiment of the application, the medium filling area 2 is arranged in the liquid filling area 3, the medium filling area 2 is coaxial with the liquid filling area 3, the medium is arranged in the medium filling area 2, the mixed solution is arranged in the liquid filling area 3, the top of the medium is flush with the liquid level of the mixed solution, and the mixed solution is formed by mixing the sodium chloride solution and the thickening agent, so that the high consistency of the mixed solution and the low permeability of the medium are utilized to enable the periphery of the medium to be affected by the permeation of the mixed solution, thereby realizing the simulation of the desalination of the groundwater, because the precipitation device 1 is arranged above the medium filling area 2, the water outlet of the precipitation device 1 is aligned to the top of the medium filling area 3, the precipitation device 1 can be used for simulating the natural precipitation, because the desalination detection device 4 can be inserted into the medium filling area 2, therefore, the desalination detection device 4 is inserted into, and the salinity of the sampled liquid is determined, the boundary and the transition section of the fresh water are determined, the relation among precipitation, permeability coefficient and fresh water space distribution is established, the relation is used for analyzing the processes of generation, transformation and dissipation of the fresh water lens body, the lens body forming mechanism is disclosed, the coral reef island underground water desalination test simulation can be carried out indoors, and the operation mechanism of the fresh water coral reef underground fresh water can be disclosed.
Specifically, the precipitation device 1 includes: a water inlet pipe 1-1, a flowmeter 1-2 and a shower head 1-3.
The water outlet of the water inlet pipe 1-1 is fixedly provided with a shower head 1-3, and the water inlet of the water inlet pipe 1-1 is communicated with an external water tap. The shower heads 1-3 are aligned with the top of the medium filling area 2, so that the water sprayed by the shower heads 1-3 is only sprayed on the medium filling area 2.
Wherein, the water inlet pipe 1-1 is a plastic hose which is sold in the market and used for water delivery and is a universal part. The flowmeter 1-2 is a commercially available instrument for monitoring flow, and the flowmeter 1-2 is a digital flowmeter and a universal part; the shower head 1-3 is a commercial watering spray head and is a universal part.
The flowmeter 1-2 is arranged on the water inlet pipe 1-1 and used for observing the spraying amount.
Referring to fig. 4, specifically, the medium filling region 2 includes: a first filling cylinder 2-1.
The bottom of the first filling cylinder body 2-1 is fixedly provided with a bottom plate 2-2. Specifically, in the present embodiment, the bottom of the first filling cylinder 2-1 may be fixedly provided with the bottom plate 2-2 by welding, and in other embodiments, the bottom of the first filling cylinder 2-1 may be fixedly provided with the bottom plate 2-2 by other means such as bolts or the like. The bottom plate 2-2 is used for sealing the first filling cylinder 2-1, so that the medium filling area 2 and the medium can be conveniently taken out integrally, and the medium can be conveniently replaced. A first filling cylinder 2-1 is arranged in the liquid filling zone 3 and a medium is arranged in the first filling cylinder 2-1. The medium can be sandy soil to serve as a fresh water forming place and provide geological condition simulation.
The wall of the first filling cylinder 2-1 is evenly provided with a plurality of water permeable holes 2-3 at intervals, which is convenient for the infiltration of the mixed solution. The water permeable holes 2-3 are directly reserved by a support die when the cylinder wall of the first filling cylinder 2-1 is customized or are obtained by punching after the manufacture is finished.
The first filling cylinder first further comprises: and 2-4 parts of water retaining edge.
The water retaining edge 2-4 is coaxially arranged with the first filling cylinder 2-1. The bottom of the water retaining edge 2-4 is fixedly arranged at the top of the first filling cylinder body 2-1. Specifically, in the present embodiment, the bottom of the water retaining rim 2-4 may be fixedly disposed on the top of the first filling cylinder 2-1 by welding, and in other embodiments, the bottom of the water retaining rim 2-4 may be fixedly disposed on the top of the first filling cylinder 2-1 by other means, such as bolts or the like.
The diameter of the bottom of the water retaining edge 2-4 is smaller than that of the top of the water retaining edge 2-4. The water retaining edges 2-4 are in the shape of a circular truncated cone. The water retaining edge 2-4 can prevent the fresh water sprayed by the precipitation device 1 from entering the liquid filling area 3.
Specifically, the liquid-filled region 3 includes: a second filling cylinder 3-1.
The bottom of the second filling cylinder 3-1 is fixedly provided with a baffle 3-2. Specifically, in the present embodiment, the bottom of the second filling cylinder 3-1 may be fixedly provided with the baffle 3-2 by means of bonding with strong glue, and in other embodiments, the bottom of the second filling cylinder 3-1 may be fixedly provided with the baffle 3-2 by means of other means such as bolts and the like. The baffle 3-2 is an acrylic plastic plate, the diameter of the baffle is equivalent to that of the second filling cylinder 3-1, and the baffle 3-2 is used for sealing the second filling cylinder 3-1. The second filling cylinder 3-1 is an acrylic plastic plate. The mixed solution is disposed in the second filling cylinder 3-1.
Specifically, the fade detection device 4 includes: a salinity meter 4-1 and a long and thin needle tube 4-2.
The sampling end of the long thin needle tube 4-2 can be inserted into the medium filling area 2 for sampling.
The sampling end of the long and thin needle tube 4-2 is detachably connected with the salinity meter 4-1 and used for conveying a sample to the salinity meter 4-1 for inspection.
Wherein, the salinity meter 4-1 is a commercially available seawater marine culture salinity meter, can measure within 0-100 per mill, and is a universal part.
The long and thin needle tube 4-2 adopts a 1mL medical needle cylinder when sampling salinity, adopts a 100mL medical needle cylinder when performing a water pumping test, adopts a stainless steel test needle head, has different lengths of 60 mm-500 mm, can be selected as required and is a universal part.
The long and thin needle tube 4-2 is used, so that the application range of the device is not limited to fresh water formation simulation, and the application range is wide; in the aspect of exploitation and use of the underground fresh water of the coral reef, a needle tube can be inserted into a medium to a certain depth to simulate a water pumping test; the 'precipitation-pumping' test can also be carried out to simulate the 'mining-recovery' process of underground fresh water under natural conditions.
In order to more clearly describe the embodiments of the present invention, the following description is made in terms of the method of using the embodiments of the present invention.
Before the test is started, a water inlet pipe 1-1, a digital flowmeter 1-2 and a shower head 1-3 are sequentially connected, and the other end of the water inlet pipe 1-1 is connected with a faucet.
The first filling cylinder 2-1 is coaxially arranged in the second filling cylinder 3-1, the diameter of the first filling cylinder 2-1 is smaller than that of the second filling cylinder 3-1, and the distance between the outer wall of the first filling cylinder 2-1 and the outer wall of the second filling cylinder 3-1 is constant, so that the test result is ensured to be processed smoothly.
And filling the simulated medium selected in the test into the first filling cylinder body 2-1 layer by layer, and compacting and tamping layer by layer in the period to make the medium close to an ideal uniform porous medium. Preparing a sodium chloride solution as simulated seawater, adding a certain amount of thickening agent to improve the viscosity of the liquid, mixing the sodium chloride solution and the thickening agent into a mixed solution, and injecting the mixed solution into the second filling cylinder 3-1 until the mixed solution is flush with the medium height. Wherein, the thickening agent can adopt starch or polyacrylamide.
The water outlet of the shower head 1-3 is aligned to the top of the medium, and the faucet is opened to carry out quantitative precipitation.
After the precipitation and infiltration are finished, taking the upper surface of the medium in the first filling cylinder 2-1 as a reference surface, sampling layer by layer at equal depth downwards, arranging sampling points on each layer at equal intervals, recording position coordinates, and placing sampling liquid in a salinity meter to measure salinity. Taking a small amount of liquid at each point, recovering the surface after sampling, cleaning and drying the long and thin needle tube in time, and sampling at the next point.
When fresh water is detected, the long and thin needle tube 4-2 is inserted into the medium; the length of the needle head is determined according to the filling height of the medium; a 1mL medical needle cylinder is adopted during salinity sampling, so that the sampling quantity is small, and the fresh water body is prevented from being damaged; when a water pumping test is carried out, a 100mL medical syringe is adopted to accelerate the water pumping process, and after the water pumping is finished, a new or cleaned and dried 1mL medical syringe is used for sampling.
After sampling, the sample is dripped to a salinity meter 4-1 for salinity measurement.
After one group of tests is finished, the medium filling area 2 can be integrally taken out, the medium is replaced, the medium is placed back to the center of the liquid filling area 3, then the liquid in the liquid filling area 3 is supplemented, and the next group of tests are continued. The test can be repeated with varying precipitation, soil or fill liquid consistencies.
According to the method, simulation of the underground water desalination process of the coral reef island and exploration of an operation mechanism are carried out under different precipitation amounts, medium permeability coefficients and filling liquid consistencies, and the underground water desalination simulation is realized in a small-proportion test model by mainly utilizing a high-consistency mixed solution and a low-permeability medium; the liquid filling area is filled with seawater-like liquid, the medium filling area is filled with a medium, a rainfall system is used for simulating natural rainfall, a desalination detection system is used for determining the salinity of the medium in the medium filling area at each point in a three-dimensional space, so that the boundary and the transition section of fresh water are determined, and the relationship between the rainfall amount, the permeability coefficient and the spatial distribution of the fresh water is established.
The method can easily control the test variables such as precipitation, permeability coefficient, consistency and the like, finds out the relation of the test variables and the space distribution formed by the fresh water, and has important significance for researching the forming mechanism, the operation mechanism and the exploitation protection scheme of the fresh water of the coral reef island.
The experiment device facilitates indoor development of coral reef island underground water desalination experiment simulation, provides a convenient experiment device for research of a formation mechanism and a mining method of the fresh water lens, analyzes the processes of generation, transformation and dissipation of the fresh water lens through the island underground water desalination simulation experiment, discloses a lens formation mechanism, has wide application prospects in aspects of island underground water desalination detection, lens development and utilization and the like, and has the advantages of simple structure, easiness in operation, convenience in manufacture, economy, reasonableness and easiness in popularization and application.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the examples, those skilled in the art should understand that the technical solutions of the present invention can be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.
Claims (7)
1. The coral reef island underground water desalination test simulation system is characterized by comprising: the device comprises a precipitation device, a medium filling area, a liquid filling area and a desalination detection device;
the medium filling area is arranged in the liquid filling area, and the medium filling area is coaxial with the liquid filling area;
a medium is arranged in the medium filling area, a mixed solution is arranged in the liquid filling area, the top of the medium is flush with the liquid level of the mixed solution, and the mixed solution is formed by mixing a sodium chloride solution and a thickening agent;
the precipitation device is arranged above the medium filling area, and a water outlet of the precipitation device is aligned to the top of the medium filling area;
the fade detection device may be inserted into the media fill region.
2. The coral reef island groundwater desalination test simulation system as claimed in claim 1, wherein the precipitation apparatus comprises: a water inlet pipe, a flowmeter and a shower head;
the water outlet of the water inlet pipe is provided with the shower head, and the shower head is aligned to the top of the medium filling area;
the flowmeter is arranged on the water inlet pipe.
3. The coral reef island groundwater desalination test simulation system as claimed in claim 1, wherein the medium filling area comprises: a first fill cylinder;
a bottom plate is arranged at the bottom of the first filling cylinder body, the first filling cylinder body is arranged in the liquid filling area, and the medium is arranged in the first filling cylinder body;
and a plurality of water permeable holes are uniformly arranged on the wall of the first filling cylinder body at intervals.
4. The coral reef island groundwater desalination test simulation system of claim 3, wherein the first packing cylinder further comprises: water retaining edges;
the water retaining edge is coaxial with the first filling cylinder;
the bottom of the water retaining edge is arranged at the top of the first filling cylinder;
the diameter of the bottom of the water retaining edge is smaller than the diameter of the top of the water retaining edge.
5. The coral reef island groundwater desalination test simulation system as claimed in claim 4, wherein:
the shape of the water retaining edge is in a circular truncated cone shape.
6. The coral reef island groundwater desalination test simulation system as recited in claim 1, wherein the liquid filled region comprises: a second fill cylinder;
the bottom of the second filling cylinder is provided with a baffle;
the mixed solution is disposed within the second fill cylinder.
7. The coral reef island groundwater desalination test simulation system as claimed in claim 1, wherein the desalination detection apparatus comprises: a salinity meter and a long and thin needle tube;
the sampling end of the long and thin needle tube can be inserted into the medium filling area;
the sampling end of the long and thin needle tube is detachably connected with the salinity meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201920419632.XU CN209841849U (en) | 2019-03-29 | 2019-03-29 | Coral reef island groundwater desalination test simulation system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920419632.XU CN209841849U (en) | 2019-03-29 | 2019-03-29 | Coral reef island groundwater desalination test simulation system |
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| CN209841849U true CN209841849U (en) | 2019-12-24 |
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| CN201920419632.XU Expired - Fee Related CN209841849U (en) | 2019-03-29 | 2019-03-29 | Coral reef island groundwater desalination test simulation system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109932497A (en) * | 2019-03-29 | 2019-06-25 | 中国科学院武汉岩土力学研究所 | A kind of coral skerries underground water desalination Experimental mimic system and method |
-
2019
- 2019-03-29 CN CN201920419632.XU patent/CN209841849U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109932497A (en) * | 2019-03-29 | 2019-06-25 | 中国科学院武汉岩土力学研究所 | A kind of coral skerries underground water desalination Experimental mimic system and method |
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Granted publication date: 20191224 Termination date: 20210329 |