CN107817206B - Experimental device capable of simulating water-rock interaction through uniform water distribution - Google Patents
Experimental device capable of simulating water-rock interaction through uniform water distribution Download PDFInfo
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- CN107817206B CN107817206B CN201711215420.1A CN201711215420A CN107817206B CN 107817206 B CN107817206 B CN 107817206B CN 201711215420 A CN201711215420 A CN 201711215420A CN 107817206 B CN107817206 B CN 107817206B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 131
- 239000011435 rock Substances 0.000 title claims abstract description 51
- 230000003993 interaction Effects 0.000 title claims abstract description 23
- 239000002689 soil Substances 0.000 claims abstract description 75
- 239000007788 liquid Substances 0.000 claims abstract description 35
- 239000000706 filtrate Substances 0.000 claims abstract description 11
- 238000002386 leaching Methods 0.000 claims abstract description 11
- 238000000605 extraction Methods 0.000 claims 2
- 238000000034 method Methods 0.000 abstract description 17
- 230000008569 process Effects 0.000 abstract description 17
- 238000004088 simulation Methods 0.000 abstract description 11
- 238000001764 infiltration Methods 0.000 abstract description 7
- 230000008595 infiltration Effects 0.000 abstract description 7
- 239000005442 atmospheric precipitation Substances 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 4
- 239000003673 groundwater Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000003895 groundwater pollution Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N2015/0023—Investigating dispersion of liquids
- G01N2015/0034—Investigating dispersion of liquids in solids
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Abstract
The invention discloses an experimental device capable of uniformly distributing water and simulating water-rock interaction, wherein leachate in a liquid supply bottle is leached into a spiral water distributor in a soil column body through a water inlet pipe, is transmitted into other annular water tanks through a diversion trench communicated with an annular water tank with the smallest radius, is uniformly leached into soil filled in the soil column body through small holes in the annular water tanks, and a leached water sample passing through the soil column body is transmitted into the spiral water distributor in a rock core column body through a filtrate tip guide pipe and is leached into rocks filled in the rock core column body; the simulation process realizes the process of simulating the vertical flow direction uniform infiltration and leaching of atmospheric precipitation, and also realizes the flow direction along the rock stratum, so that the flow condition of underground water can be accurately simulated; and the simulation device has simple structure, the volume of the soil cylinder and the volume of the rock core cylinder are smaller, the required material is less, and the cost of the simulation process is greatly reduced.
Description
Technical Field
The invention belongs to the technical field of underground water research, and particularly relates to an experimental device capable of uniformly leaching and simulating interaction between underground water and rock strata.
Background
The groundwater is one of the important components of the earth water body, and becomes an important water source for agricultural irrigation, industrial and mining enterprises and urban domestic water by using the stable water supply condition and good water quality, and is an essential important water resource for human society. However, in recent years, the ground water pollution has been increasingly serious due to the influence of human activities. In order to control and treat the problem of groundwater pollution, it is important to understand and study the evolution process and the evolution result of groundwater in the flowing process. The evolution process in the underground water flowing process mainly refers to water-rock interaction, and in the related technology, the water-rock interaction is realized by combining earth pillar experiments and geochemistry simulation.
The inventor finds that when the earth pillar simulation device adopted by the earth pillar experiment device in the related technology is too large for simulating the interaction of underground water and rock, too much material is consumed, so that the cost of the simulation experiment is too high and is difficult to develop, and the stability in the simulation process is poor; when a small-sized soil column simulation device is adopted, the condition of uneven water distribution exists, the condition of uniform infiltration of atmospheric precipitation cannot be simulated, and the structure and the physical and chemical properties of a soil layer above a rock stratum can be damaged.
Disclosure of Invention
In view of this, the embodiment of the invention provides an experimental device for simulating interaction of groundwater, water and rock, which does not need excessive materials, has low cost, can uniformly distribute water to simulate the process of uniform infiltration of atmospheric precipitation, and has good stability.
In order to solve the technical problems, the technical scheme adopted by the embodiment of the invention is that the experimental device capable of uniformly distributing water and simulating water-rock interaction is characterized by comprising a liquid supply bottle, a soil cylinder, a rock core cylinder, a fixed structure and a spiral water distributor; the liquid supply bottle is communicated with the soil column body through a water inlet pipe; the core cylinder is positioned below the soil cylinder, and the bottom end of the soil cylinder is communicated with the top end of the core cylinder through a filtrate tip conduit; the soil column body and the rock core column body are both installed and fixed on the fixed structure; the spiral water distributors are respectively positioned at the upper parts of the soil column body and the core column body; the spiral water distributor is of a hemispherical structure formed by a plurality of annular water tanks, two adjacent annular water tanks are connected through a plurality of flow guide grooves, one flow guide groove is communicated with the annular water tank with the smallest radius through the center of the annular water tank with the smallest radius, and small holes are uniformly distributed on the plurality of annular water tanks; and leaching the leaching liquid in the liquid supply bottle to a diversion trench communicated with the annular water trench with the smallest radius through the water inlet pipe.
Preferably, a rotary piston is arranged on the filtrate tip guide pipe.
Preferably, a flowmeter is arranged on the water inlet pipe.
Preferably, the spiral water distributor is fixed on the upper part of the soil column body through a threaded port in the soil column body.
Preferably, the soil column body comprises a cover plate and a porous sieve plate, and the cover plate covers the top end of the soil column body; the porous sieve plate is positioned at the lower part in the soil column body.
Preferably, the surface of the porous sieve plate is paved with a plurality of layers of gauze, and a water collecting cavity is arranged between the lower part of the gauze and the bottom of the soil column body.
Preferably, the bottom of the soil column body is also provided with a liquid taking soft branch pipe, and a water stop clamp is arranged on the liquid taking soft branch pipe.
Preferably, a porous sleeve is arranged inside the core cylinder, and small holes are regularly formed in the side wall and the bottom of the porous sleeve; the bottom of the porous sleeve and the bottom of the rock core column body are water collecting cavities.
Preferably, still include the liquid collecting bottle, the liquid collecting bottle is located the below of rock core cylinder communicates through the outlet pipe.
Preferably, the fixing structure comprises a support rod and a fixing clamp; the soil column body and the rock core column body are fixed on the supporting rod through the fixing clamp.
Preferably, the fixing structure further comprises a base, and the liquid collecting bottle is located on the base.
The technical scheme provided by the embodiment of the invention has the following beneficial effects: according to the experimental device capable of uniformly distributing water and simulating water-rock interaction, leachate in the liquid supply bottle is leached into the spiral water distributor in the soil column body through the water inlet pipe, is transmitted into each annular water tank through the diversion trench of the annular water tank with the smallest radius in the spiral water distributor, is uniformly leached into soil filled in the soil column body through the small holes in the annular water tanks, is transmitted into the spiral water distributor in the rock core column body through the filtrate tip guide pipe, is transmitted into each annular water tank through the diversion trench of the annular water tank with the smallest radius in the spiral water distributor, and is uniformly leached into rocks filled in the rock core column body through the small holes in the annular water tanks; the simulation process realizes the process of simulating the vertical flow direction uniform infiltration and leaching of atmospheric precipitation, and also realizes the flow direction along the rock stratum, so that the flow condition of underground water can be accurately simulated; and the simulation device has simple structure, the volume of the soil cylinder and the volume of the rock core cylinder are smaller, the required material is less, and the cost of the simulation process is greatly reduced.
Drawings
FIG. 1 is a schematic structural diagram of an experimental apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a spiral water distributor according to an embodiment of the present invention;
FIG. 3 is a schematic cross-sectional view of a body and a core cylinder according to an embodiment of the present invention.
Wherein: the device comprises a liquid supply bottle 1, a soil pillar 2, a rock core cylinder 3, a liquid collecting bottle 4, a flowmeter 5, a water inlet pipe 6, a rotary piston 7, a water stop clamp 8, a liquid taking soft branch pipe 9, a filtrate tip guide pipe 10, a water outlet pipe 11, a base 12, a support rod 13, a spiral water distributor 14, an annular water tank 141, a guide groove 142, a small hole 143, a fixing clamp 15, a threaded hole 16, a porous sieve plate 17, a porous sleeve 18, a cover plate 19, a water collecting cavity 20 and a water collecting cavity 21.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1 and 2, an experimental apparatus for simulating water-rock interaction by uniform water distribution includes a liquid supply bottle 1, a soil column 2, a core column 3, a fixing structure and a spiral water distributor 14; the liquid supply bottle 1 is communicated with the soil column body 2 through a water inlet pipe 6, and the leachate in the liquid supply bottle 1 is circulated to the soil column body 2 through the water inlet pipe 6; the core column body 3 is positioned below the soil column body 2, soil is filled in the soil column body 2, rock is filled in the core column body 3, the two are communicated through a filtrate tip conduit 10, a water sample passing through the soil in the soil column body 2 is circulated into the core column body 3 through the filtrate tip conduit 10, and the soil column body 2 and the core column body 3 are organic glass column tubes with the diameter of 5-15 cm and the height of 15-40 cm; the soil cylinder 2 and the core cylinder 3 are fixedly arranged on the fixed structure; the spiral water distributor 14 is respectively positioned at the upper parts of the soil column body 2 and the core column body 3; the spiral water distributor 14 is of a hemispherical structure formed by 4 annular water tanks 141, two adjacent annular water tanks 141 are connected by 4 diversion trenches 142, one diversion trench 142 is communicated with the annular water tank 141 with the smallest radius through the center of the annular water tank 141 with the smallest radius, and small holes 143 are uniformly distributed on the annular water tank 141; leaching solution in the liquid supply bottle 1 is leached to the diversion trench 142 of the annular water tank 141 with the smallest radius through the water inlet pipe 6, the leaching solution circulates in the annular water tank 141 through the diversion trench 142 and is evenly leached to soil in the soil column body 2 through the small holes 143, the process of simulating vertical flow direction even infiltration and leaching of atmospheric precipitation is realized, and the reaction generated by movement of underground water in a soil layer is researched; and water sample passing through the soil column body 2 is leached into the spiral water distributor 14 of the core column body 3 through the filtrate tip conduit 10 and is evenly leached into rocks in the core column body 3, so that the process of simulating water-rock interaction is realized. The device has simple structure, the vertical flow can distribute water uniformly upwards, the hemispherical structure of the spiral water distributor 14 simultaneously realizes the flow direction along the rock stratum, and the seepage process of underground water and the interaction process of water and rock can be accurately simulated.
Furthermore, the filtrate tip conduit 10 is provided with a rotary piston 7, and only by simulating the infiltration process of the groundwater in the soil layer and researching the reaction of the groundwater in the soil layer, the piston 7 is closed, so that the water which has acted with the soil in the soil column body 2 does not flow downstream into the core column body 3; when water-rock interaction needs to be simulated at the same time, the rotary piston 7 is opened.
Furthermore, a flowmeter 5 is arranged on the water inlet pipe 6, and the flowmeter 5 is used for adjusting the flow of the leaching solution.
Further, the spiral water distributor 14 is screwed to the upper portion of the soil cylinder 2 or the core cylinder 3 through a screw port 16 formed in the inner portion thereof. The height of the spiral water distributor 14 from the top end of the soil column body 2 or the core column body 3 can be adjusted through the thread fixing position, so that the size of the space filled inside the soil column body 2 or the core column body 3 can be conveniently adjusted.
Referring to fig. 3, further, the soil column body 2 comprises a perforated sieve plate 17 and a cover plate 19, wherein the cover plate 19 covers the top end of the soil column body 2; porous sieve 17 is located lower part in the soil cylinder 2, porous sieve 17 filters the water sample to the core cylinder 3 in, avoids the soil in the soil cylinder 2 to get into in the core cylinder 3.
Furthermore, multiple layers of gauze are laid on the surface of the porous sieve plate 17, and the gauze is used for filtering a water sample, so that large soil particles are prevented from entering the porous sieve plate 17 and blocking the porous sieve plate 17; a water collecting cavity 20 is arranged between the lower part of the water collecting cavity and the bottom of the soil column body 2, and the water collecting cavity 20 can store water samples permeated by soil.
Further, the bottom of soil cylinder 2 still is equipped with gets liquid soft branch pipe 9, get liquid soft branch pipe 9 intercommunication the chamber 20 that catchments, it presss from both sides 8 to be equipped with the stagnant water on the soft branch pipe 9 of liquid, when needing to get the water sample through soil infiltration and analyzing, opens the stagnant water presss from both sides 8, and the water sample in the chamber 20 that catchments flows out through getting liquid soft branch pipe 9.
Further, a porous sleeve 18 is arranged inside the core barrel 3, and small holes are regularly formed in the side wall and the bottom of the porous sleeve 18; the bottom of the porous sleeve 18 and the core cylinder 3 is a water collecting cavity 21. The rock is filled in the porous sleeve 18, and water acted by soil in the earth pillar body 2 seeps in through the small holes or water acted by the rock seeps out of the small holes to the water collecting cavity 21.
Further, still include liquid collecting bottle 4, liquid collecting bottle 4 is located the below of core cylinder 3 through outlet pipe 11 intercommunication, and the water sample after soil rock interact is following current to liquid collecting bottle 4 storage, and the water sample of being convenient for is taken and is carried out corresponding detection to research water rock interact.
Further, the fixing structure comprises a support rod 13 and a fixing clamp 15; the soil column body 2 and the core column body 3 are fixed on the support rod 13 through the fixing clamp 14.
Further, the fixing structure further comprises a base 12, and the liquid collecting bottle 4 is located on the base 12.
In this document, the terms front, back, upper and lower are used to define the components in the drawings and the positions of the components relative to each other, and are used for clarity and convenience of the technical solution. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.
The features of the embodiments and embodiments described herein above may be combined with each other without conflict.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. An experimental device capable of uniformly distributing water and simulating water-rock interaction is characterized by comprising a liquid supply bottle, a soil cylinder, a rock core cylinder, a fixed structure and a spiral water distributor; the liquid supply bottle is communicated with the soil column body through a water inlet pipe; the core cylinder is positioned below the soil cylinder, and the bottom end of the soil cylinder is communicated with the top end of the core cylinder through a filtrate tip conduit; the soil column body and the rock core column body are both installed and fixed on the fixed structure; the spiral water distributors are respectively positioned at the upper parts of the soil column body and the core column body; the spiral water distributor is of a hemispherical structure formed by a plurality of annular water tanks, two adjacent annular water tanks are connected through a plurality of flow guide grooves, one flow guide groove is communicated with the annular water tank with the smallest radius through the center of the annular water tank with the smallest radius, and small holes are uniformly distributed on the plurality of annular water tanks; leaching the leaching liquid in the liquid supply bottle to a diversion trench communicated with the annular water trench with the smallest radius through the water inlet pipe; a porous sleeve is arranged in the core cylinder, and small holes are regularly formed in the side wall and the bottom of the porous sleeve; the bottom of the porous sleeve and the bottom of the rock core column body are water collecting cavities.
2. The experimental device for simulating water-rock interaction with uniform water distribution as claimed in claim 1, wherein the filtrate tip conduit is provided with a rotary piston; the water inlet pipe is provided with a flowmeter.
3. The experimental device for simulating water-rock interaction with uniform water distribution as claimed in claim 1, wherein the spiral water distributor is screwed on the upper part of the soil cylinder through a threaded opening inside the soil cylinder.
4. The experimental device for simulating water-rock interaction with uniform water distribution as claimed in claim 1, wherein the soil column body comprises a cover plate and a porous sieve plate, and the cover plate covers the top end of the soil column body; the porous sieve plate is positioned at the lower part in the soil column body.
5. The experimental device for simulating water-rock interaction with uniform water distribution as claimed in claim 4, wherein the surface of said porous sieve plate is laid with multiple layers of gauze, and a water collecting cavity is formed between the lower part of said porous sieve plate and the bottom of said soil column.
6. The experimental device for simulating water-rock interaction with uniform water distribution as claimed in claim 1, wherein the bottom of the soil cylinder is further provided with a soft branch for liquid extraction, and the soft branch for liquid extraction is provided with a water stop clip.
7. The experimental device capable of simulating water-rock interaction with uniform water distribution as claimed in claim 1, further comprising a liquid collecting bottle, wherein the liquid collecting bottle is located below the core cylinder and is communicated with the core cylinder through a water outlet pipe.
8. The experimental device for simulating water-rock interaction with uniform water distribution as claimed in claim 7, wherein the fixing structure comprises a support rod and a fixing clamp; the soil column body and the rock core column body are fixed on the supporting rod through the fixing clamp.
9. The experimental device for simulating water-rock interaction with uniform water distribution as claimed in claim 8, wherein the fixing structure further comprises a base, and the liquid collecting bottle is located on the base.
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CN109596462B (en) * | 2018-10-25 | 2021-07-23 | 中国辐射防护研究院 | Three-dimensional radioactive leaching experimental equipment |
CN110133230B (en) * | 2019-06-14 | 2020-11-24 | 华中科技大学 | Multi-stage earth pillar leaching system based on feedback control and leaching experiment method thereof |
CN111089830B (en) * | 2019-12-27 | 2022-05-06 | 山东科技大学 | Water rock coupling simulation test device for mining area |
CN111665180A (en) * | 2020-06-03 | 2020-09-15 | 中国地质大学(武汉) | Experimental system and method for slowly leaching aquifer rock samples of bedrock in multiple batches |
CN114152553B (en) * | 2021-12-01 | 2024-04-16 | 国家能源投资集团有限责任公司 | Leaching experiment device and leaching experiment liquid taking method |
CN115508250A (en) * | 2022-09-05 | 2022-12-23 | 中国石油大学(华东) | Porous medium gas adsorption capacity evaluation system and method considering water-rock effect |
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US6935159B2 (en) * | 2003-11-19 | 2005-08-30 | University Of Waterloo | Centrifugal permeameter |
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CN101244424B (en) * | 2007-02-15 | 2011-02-16 | 沈阳大学 | Experimental device for washing heavy metal pollution |
CN201701860U (en) * | 2010-06-22 | 2011-01-12 | 唐山三孚硅业有限公司 | Water distribution device of high-purity acid tail gas absorption tower |
CN202101990U (en) * | 2011-06-15 | 2012-01-04 | 北京师范大学 | Plant retention unit experiment device for water quality and water amount three-dimensional analog control |
CN202562911U (en) * | 2012-04-01 | 2012-11-28 | 重庆三峡学院 | Soil leaching capacity experiment simulator |
CN204855509U (en) * | 2015-08-29 | 2015-12-09 | 西安科技大学 | Loess water translocation law analogue test system under indoor rainfall condition |
CN106501490B (en) * | 2016-12-15 | 2019-05-21 | 中国农业科学院农业资源与农业区划研究所 | A kind of small-sized detachable earth pillar simulation device |
CN206361863U (en) * | 2016-12-26 | 2017-07-28 | 江苏高菱蓄能科技有限公司 | It is a kind of to eliminate the water cold storage water-locator in water distribution shadow region |
CN207623199U (en) * | 2017-11-28 | 2018-07-17 | 中国地质大学(武汉) | It is a kind of can water distribution uniformity simulation water lithofacies interaction experimental provision |
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