CN103063811A - Indoor simulation device for migration and conversion of pollutant in artificial shore zone - Google Patents
Indoor simulation device for migration and conversion of pollutant in artificial shore zone Download PDFInfo
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Abstract
The invention discloses an indoor simulation device for the migration and the conversion of pollutant in an artificial shore zone. According to the invention, in the lateral supply direction of a three-dimensional seepage groove, ground water is supplied on one side where a stream flows to simulate the boundary condition of the groundwater flow in a field zone; reasonably proportioned solution is supplied on the other side to simulate the seawater in a coastal zone; and interaction of salt water and fresh water realizes real simulation of seawater and terrestrial water. By adopting the device provided by the invention, the physical simulation of the artificial shore zone is simulated to the greatest extend, a large-scale artificial coastal zone is downsized to a small-scale indoor physical simulation device under the guidance of a geometric similarity theory, the comprehensive influences of adjustable water level height, saltwater and fresh water interaction, waves, rainfall and external contamination are comprehensively considered, the real simulation of the artificial coastal zone is ensured, and a foundation is laid for the numerical simulation of the artificial coastal zone and the late pollution abatement.
Description
Technical field
The invention belongs to physical simulating device, more particularly, relate to a kind of physical simulating device for artificial shore coastal zone pollutant Transport And Transformation rule research.
Background technology
In the process of global industrial development, the underground water that water pollution problem, especially coastal region are serious and marine pollution become the common problems of concern of common people.Therefore, no matter extra large Lu Shui repercussion study abroad or domestic, is all paid much attention to.Thereby the environmental pollution under Hai Lushui interacts is mainly reflected in land groundwater salinization that seawater intrusion causes and land-sourced pollutant and enters seawater by ground water discharge and cause marine pollution.
In China, take Liaodong Peninsula, the Shandong Peninsula, Beijing-Tianjin Ji is main Bohai Economic Rim, in recent ten years, along with the fast development of economy and the continuous growth of population, underground water, marine pollution are day by day serious, and the environment of immediate offshore area is in continuous deterioration, and environmental problem becomes increasingly conspicuous.For example, be in the Binhai New Area in Tianjin of the tip under nine rivers, lean against the vast innerland in Beijing-Tianjin and North China, the annual needs admits from a large amount of industrial waste water and sanitary sewages (about 600,000,000 tons) of provinces and cities such as Beijing, Hebei and Tianjin, add irrational ocean development and marine blowdown activity, make Bohai Sea Gulf become national Environment of Alongshore Sea Area and pollute the most serious bay.According to " the China marine environmental quality communique in 2010 " of National Bureau of Oceanography's issue, seawater intrusion and soil salinization severely afflicated area mainly are distributed in Bohai Sea Coastal Plain.Because unordered exploitation and the pollution from land-based sources of Bohai Coastal Zone, make the retaining of Bohai Coastal Zone transfer the functions such as flood, region climate comfort, pollution degradation, maintenance bio-diversity to reduce, the Bohai Sea becomes one of China multiple district of offshore red tide and severely afflicated area, and in recent years red tide harm is also in rising trend.
In the process of accelerating industrialization, urbanization, the coastland mining inetesity is the swelling property development, and development space has been proposed more and more higher requirement.Coastal cities have started the upsurge of one reclaiming land around sea in order to satisfy the growth requirement of regional economy.The formed artificial bank band of reclaiming land around sea, cause artificial water front ratio to increase, change original natural character, changed simultaneously the equilibrium state of Hai Lushui exchange, may further cause letting out under seawater intrusion, the land pollutant Tough questions such as entering the marine pollution marine environment, the pollutant Transport And Transformation rule of therefore studying the artificial shore of reclaiming land around sea coastal zone fresh-saline water interface has important realistic meaning and significance of scientific research.
The research of artificial shore coastal zone pollutant Transport And Transformation rule be unable to do without the assurance of pollutant transport property in soil and groundwater.Can more efficiently assurance feature and rule by means of numerical simulation, but numerical simulation relates to the pollutant migration course of conveying of many complexity, comprises many hydrogeological parameters, such as the physicochemical property of pollutant and hydrogeological characteristic etc.Groundwater Flow and the Contaminants Transport model of setting up the place need the data such as change in time and space of intensive pollutant levels spatial and temporal distributions and place hydrogeology situation that model is proofreaied and correct.In general, can obtain the place data by field inspection, but field inspection and on-the site analysis expense are very high, therefore can only provide limited data, and the data of obtaining can not accurately reflect the situations such as the unevenness of place hydrogeology characteristic and pollutant space-time CONCENTRATION DISTRIBUTION, thereby affect the precision of prediction of groundwater contamination hydrodynamics numerical model.The contaminant water dynamics physical model of setting up the indoor simulation device of small scale in the laboratory then can remedy this defective well.
Publication number is that the Chinese patent of CN102352735 has disclosed a kind of variable three-dimensional natural gas hydrate experimental device and three-dimensional simulation experimental technique of boundary condition that can freely change the experiment boundary condition.Described experimental provision comprises three-dimensional reactor, temperature and boundary Control unit, import barrier unit, outlet controlling unit, data processing unit; Three-dimensional reactor is arranged in temperature and the boundary Control unit.This device is applicable to the land groundwater simulation, is not suitable for the coastal zone pollutant Transport And Transformation simulation of artificial shore.Publication number is that the Chinese patent of CN102636630A has disclosed a kind of large-scale aerated zone soil unsaturated seepage physical simulating device, comprise soil bin, mend heat-extraction system and measuring system, soil bin inside is loaded with test soil, described benefit heat-extraction system comprises that side direction is mended the row unit, the bottom mends the row unit and the row unit is mended at the top, and side direction is mended the row unit and is comprised of the water replanishing device and the drainage arrangement that are installed on respectively on the soil bin two side; The bottom is mended the row unit and is comprised water service pipe and connecting pipe; The top is mended the row unit and is comprised that rainer, vaporising device and ponding infiltrate device; Measuring system comprises soil solute measuring unit, soil moisture measurement unit, soil water potential measuring unit and underground water level measurement unit.Large-scale aerated zone soil unsaturated seepage physical simulating device provided by the invention not only can fully be simulated the various situations in the aerated zone soil, and its mensuration is convenient, error is little.This device is applicable to the various states in the soil aeration zone, and therefore the simulation of the interactional artificial shore of inapplicable extra large Lu Shui coastal zone does not consider that seawater and wave are for the impact of underground water in the soil yet.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of artificial bank band pollutant Transport And Transformation indoor simulation device is provided, be based upon on the geometric similarity theoretical foundation, open-air entity can be dwindled into indoor model according to the geometric similarity theory, consider the factors such as rainfall, xenobiotic pollutants, wave, can save time, simulate accurately the Transport And Transformation rule of artificial shore coastal zone pollutant.
Purpose of the present invention is achieved by following technical proposals:
Artificial bank band pollutant Transport And Transformation indoor simulation device comprises organic glass guide channel, Simulation of Precipitation device, wave generator, wherein:
The two ends of described organic glass groove are separated out respectively groove head, groove body and three parts of groove tail by dividing plate, its middle slot is first to link to each other with fresh water feed system, sea water supply system respectively with the groove tail, and realizes the real-time monitoring of side direction water level and flow rate of water flow by tank gage and regulating device.
Described groove body position is filled with soil horizon, and in the filling process, be preset with the pre-buried well of different depth, described pre-buried well is the plastic tube of both ends open, preferred pvc pipe, can test wherein pollutant and other indexs by extracting liquid in the pre-buried well, for the later stage numerical simulation provides the data basis; Described pre-buried well is 3 row, 8 row, amounts to 24.
Described wave generator links to each other with the sea water supply system, controls by control device, thereby reflects that truly wave is on the impact of degree of saltiness water interaction.
Described Simulation of Precipitation device is arranged on the top of analogue means, realizes that by spray equipment and control device control flow research precipitation is on the impact of pollutant Transport And Transformation.
From groove head, groove body to the groove tail, along the flow direction, settle respectively linker in the trip of the upper, middle and lower of device one side, by the height of water level of linker reaction unit inside.
Described dividing plate is with porose poly (methyl methacrylate) plate, and adopts braid to cover, and penetrates soil with fresh water, the seawater of implement device both sides and in soil reciprocation occurs and prevent the soil clogging intake-outlet.
For reaching the real simulation to artificial shore coastal zone, projecting point main manifestations of the present invention is following three aspects.
1, on the side direction supply direction of three dimensional fluid flow groove, the boundary condition of flow one side recharge groundwater simulation place Groundwater Flow, the seawater of the solutions simulate shore coastal zone of opposite side supply rational proportion, the reciprocation of degree of saltiness water have been realized Hai Lushui interactional real simulation.
2, acquire wave generator in seawater one side of flow, according to the control of control principle realization seawater one side wave wave oscillation period and amplitude, the oscillation period and the amplitude that change wave can realize that wave is on polluting the impact research of Transport And Transformation among the extra large Lu Shui.
3, external source pollution source release is arranged in this three-dimensional reactor top, realizes the research of different pollutant Transport And Transformation rules.
For the artificial shore of real simulation coastal zone pollutant Transport And Transformation, at first consult the related data such as hydrogeology of place and carry out open-air on-the-spot investigation in the place, according to geometrical similarity principle the place is reduced into the indoor physical simulation plant bulk.Consider in the physical simulating device and to fill soil to the high pressure of device, therefore make this analogue means with poly (methyl methacrylate) plate, and in the both sides of device intake-outlet is set respectively that water inlet is connected with Height Adjustable linker.Settle respectively near inlet end in the device both sides with holes to cover poly (methyl methacrylate) plate with braid, thereby the fresh water of implement device both sides, seawater penetrate soil and in soil reciprocation occur and prevent the soil clogging intake-outlet.Along the flow direction, settle respectively linker in the trip of the upper, middle and lower of device one side, by the height of water level of linker reaction unit inside.Hydrogeological condition and soil layer construction according to the simulation place banket in device, and external source is set above soil movably pollutes release, simulate the Transport And Transformation rule of different pollutants in the coastal zone of artificial shore, the pre-buried well of different depth is set in soil along the flow direction simultaneously, can test wherein pollutant and other indexs by extracting liquid in the pre-buried well, for the later stage numerical simulation provides the data basis.In order truly to reflect the condition of raining of place, above device, spray equipment is set, by controlling its flow research precipitation to the impact of pollutant Transport And Transformation.What is more important, this analogue means is mainly used in simulating artificial shore coastal zone, and therefore therefore reciprocation between main consideration degree of saltiness water once settles wave generator at the seawater of device, by control device control propulsion system, thereby reflect that truly wave is on the impact of degree of saltiness water interaction.Therefore, this analogue means is on the basis of the plumbing condition of considering adjustable side direction, top, take into full account reciprocation between external source pollution, the degree of saltiness water and the impact of wave, can accurately reflect to a certain extent the Transport And Transformation rule of pollutant in the coastal zone of artificial shore.
Employing apparatus of the present invention can realize the physical simulation of artificial shore coastal zone to the full extent, the coastal zone place, artificial shore of large scale are reduced into the indoor physical simulation device of small scale under the guidance of geometric similarity theory.Considered the combined influence of adjustable height of water level, the interaction between freshwater and seawater, wave, precipitation and xenobiotic pollutants, guaranteed the real simulation of artificial shore coastal zone, for manually the numerical simulation of strand bank band and the pollution control in later stage are laid a good foundation.
Description of drawings
Fig. 1 is artificial bank band pollutant Transport And Transformation indoor simulation device diagrammatic cross-section, wherein 1: fresh water water inlet tank gage, 2: organic glass groove, 3: soil, 4: the fresh water water level, 5: sea level fluctuations, 6: seawater water inlet tank gage, 7: pollution source discharge box, 8: the Simulation of Precipitation device, 9: wave generator, 10: fresh water brings out the mouth of a river, and 11: seawater brings out the mouth of a river.
Fig. 2 is the pre-buried well synoptic diagram of artificial bank band pollutant Transport And Transformation indoor simulation device.
Fig. 3 is the pre-buried well array Butut of artificial bank band pollutant Transport And Transformation indoor simulation device.
Fig. 4 is artificial bank band pollutant Transport And Transformation indoor simulation device dividing plate synoptic diagram.
Fig. 5 is artificial bank band pollutant Transport And Transformation indoor simulation device overall design drawing.
Embodiment
It is as follows to further specify technical scheme of the present invention below in conjunction with description of drawings and specific embodiment.
This artificial bank band pollutant Transport And Transformation indoor simulation device adopts the thick poly (methyl methacrylate) plate of 10mm to build, and analogue means is of a size of: length * wide * height=4.2m * 0.9m * 1.5m.Respectively be provided with dividing plate with holes (as shown in Figure 1) at distance fresh water mouth water inlet and seawater water inlet 20cm place, dividing plate is the thick organic glass of 10mm (as shown in Figure 4), dividing plate one side covers braid, and whole physical simulating device is divided into groove head, groove body and three parts of groove tail.Side direction at device respectively is equipped with a tank gage, can realize the real-time monitoring (as shown in Figure 1) of side direction water level and flow rate of water flow by the arrangement for adjusting height of regulating the linker below.Flow direction at device is equipped with linker, the height of water level of each point (as shown in Figure 5) in the real time monitoring apparatus.This device is at the indoor Assembling that carries out.
Before inside bankets, at first analyze the geotechnical engineering investigation report of bank band simulation place, artificial strand at device, according to geometrical similarity principle the place of large scale is reduced into indoor physical model.For simulating pollution thing accurately at the migration rule of fresh-saline water interface, the inner institute of this device bankets and takes from hydraulic reclamation scene, facing-port industry district, Tianjin, fetch earth and at first soil is exposed to the sun, screens out impurity after finishing, the soil that dries is sieved, pack into after the screening groove body of seepage tank, the compacting of sprinkling water while banketing in filling process finally fills into as shown in Figure 1 shape.Simultaneously, three row's pre-buried wells (as shown in Figure 3) are set in soil in the process of banketing, correspond to respectively three height, pre-buried well profile figure as shown in Figure 2 in the soil.Banket finish after, the fresh water mouth water inlet water-filling at seepage tank monic end flows out from water delivering orifice so that fresh water penetrates soil.Measure the flow velocity at the mouth of a river, after the water delivering orifice Water discharge flow speed is constant, inject salt water in the seawater inlet end, close the fresh water end, seawater brings out the mouth of a river, guarantees that the height of water level of fresh water end is that 1.2m seawater end liquid level remains on 0.8m.
In order to realize effectively simulating the current supply adjusting of artificial shore coastal zone, above device, be provided with the ejecting device of precipitation.In this device, a stainless steel water tank has just been fixed with triangle by the 30cm place above device, is evenly distributed 8 shower nozzles of two rows below water tank, and nozzle connecting upper rotor part flowmeter is by control uninterrupted and spout size simulated rainfall process.The water tank top links to each other with running water pipe, guarantees that the Water in Water Tanks amount is sufficient.Wherein shower nozzle is made by this valve company limited of Tianjin ENI, with the anthropomorphic worker's rainfall of low-cost die; Spinner-type flowmeter is that Dongxing, Dongtai City instrucment and meter plant produces, and model is LZB-10, to show water flow.
After more than device is built and finished, settle the push-plate type wave making machine in the salt water end slot tail position of device.This wave making machine is selected driven by servomotor, adopts digital low inertia alternating current servo motor direct to connect and drives the ball-screw rotation, and through the leading screw pair of nut rotation is converted into the linear reciprocating motion of push wave plate, produces wave thereby promote water body.In this experimental provision, determine that by debugging the wave making machine parameter is as follows: the range of wave making machine is 15cm, and maximal rate is 38cm/s, and maximum load power is 1200W, maximum water depth 0.6m, and maximum wave height 0.2m, wave period are 1.5s.Wherein servomotor is produced by Tianjin Mo Ruike Autotek S. r. l., and ball-screw flies Science and Technology Ltd. by Tianjin more and produces.
Above device build finish after, studied the Transport of sodium chloride in artificial bank band.In this experiment, extracted the water sample in the pre-buried well 1,2, No. 3 by peristaltic pump (as shown in Figure 2), and adopt the method for Moire technique to measure the chlorion in the water body, minute is spaced apart 24 hours, and it is as shown in the table that the data that METHOD FOR CONTINUOUS DETERMINATION obtained in seven days are converted into chlorion.
No. 1 pre-buried well determination of chloride ion list position: mol/L
No. 2 pre-buried well determination of chloride ion list position: mol/L
No. 3 pre-buried well determination of chloride ion list position: mol/L
Can find by above data analysis: when seawater and underground water occur to interact, chlorion can flow into underground water by the seawater end gradually by osmosis, so that groundwater salinization, and in interactional process, can form a fresh-saline water interface, at this at the interface, the Diffusion Law of chlorion is different from the diffusion in landlocked water-bearing zone and the seawater, can occur once to suddenly change at the fresh-saline water interface place, by above tested by this device can target contaminant in the Transport And Transformation rule of artificial bank band.
As shown in Figure 5, above the soil of this device, settle pollution source to discharge box, therefore all right Study of Exogenous pollutant of this indoor physical simulation device is in the Transport And Transformation rule of artificial bank band fresh-saline water interface, for the underground water reparative experiment research of artificial bank region is laid a good foundation.
More than the present invention has been done exemplary description; should be noted that; in the situation that does not break away from core of the present invention, the replacement that is equal to that any simple distortion, modification or other those skilled in the art can not spend creative work all falls into protection scope of the present invention.
Claims (4)
1. artificial bank band pollutant Transport And Transformation indoor simulation device comprises organic glass guide channel, Simulation of Precipitation device, wave generator, it is characterized in that, wherein:
The two ends of described organic glass groove are separated out respectively groove head, groove body and three parts of groove tail by dividing plate, its middle slot is first to link to each other with fresh water feed system, sea water supply system respectively with the groove tail, and realizes the real-time monitoring of side direction water level and flow rate of water flow by tank gage and regulating device;
Described groove body position is filled with soil horizon, and is preset with the pre-buried well of different depth in the filling process, can test wherein pollutant and other indexs by extracting liquid in the pre-buried well, for the later stage numerical simulation provides the data basis;
Described wave generator links to each other with the sea water supply system, controls by control device, thereby reflects that truly wave is on the impact of degree of saltiness water interaction;
Described Simulation of Precipitation device is arranged on the top of analogue means, realizes that by spray equipment and control device control flow research precipitation is on the impact of pollutant Transport And Transformation.
2. artificial bank band pollutant Transport And Transformation indoor simulation device according to claim 1, it is characterized in that, described dividing plate is with porose poly (methyl methacrylate) plate, and adopt braid to cover, penetrate soil with fresh water, the seawater of implement device both sides and in soil, reciprocation occurs and prevent the soil clogging intake-outlet.
3. artificial bank band pollutant Transport And Transformation indoor simulation device according to claim 1 is characterized in that described pre-buried well is the plastic tube of both ends open, preferred pvc pipe, and 3 row, 8 row amount to 24.
4. artificial bank band pollutant Transport And Transformation indoor simulation device according to claim 1, it is characterized in that, from groove head, groove body to the groove tail, along the flow direction, settle respectively linker in the trip of the upper, middle and lower of device one side, by the height of water level of linker reaction unit inside.
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| CN104502540A (en) * | 2014-12-26 | 2015-04-08 | 河海大学 | Shore/beach sediment release simulation experiment device and shore/beach sediment simulation experiment method |
| CN104991042A (en) * | 2015-07-20 | 2015-10-21 | 河海大学 | Seashore reservoir indoor desalination and salt resistance experimental simulation system and simulation method thereof |
| CN105301058A (en) * | 2015-10-14 | 2016-02-03 | 成都理工大学 | Imaging testing system for monitoring pollution dynamic condition of underground water and monitoring method of pollution dynamic condition of underground water |
| CN105866379A (en) * | 2016-04-11 | 2016-08-17 | 河海大学 | Device and method for simulating transportation of heterogeneous beach pollutants of coastal shallow layer |
| CN106226489A (en) * | 2016-07-15 | 2016-12-14 | 河海大学 | Pollution of waterhead simulation and forecast devices and methods therefor under a kind of Extreme Precipitation weather |
| CN108152450A (en) * | 2017-11-17 | 2018-06-12 | 河海大学 | Simulate the device and its application method of seashore reservoir pollution object migration |
| CN109164211A (en) * | 2018-09-06 | 2019-01-08 | 石家庄铁道大学 | A kind of seawater invasion simulation test sandbox |
| CN109459350A (en) * | 2018-12-27 | 2019-03-12 | 桂林理工大学 | It is a kind of for simulating the model test apparatus of heavy metal ion diffusion mobility in the soil body |
| CN109668809A (en) * | 2019-02-28 | 2019-04-23 | 水利部牧区水利科学研究所 | Valley plain band accumulation of soluble substances and Migration Simulation experimental provision and method |
| CN110967279A (en) * | 2018-09-29 | 2020-04-07 | 天津大学 | Experimental device and experimental method for simulating migration and transformation behaviors of pollutants in near seawater-sediments and application of experimental device and experimental method |
| CN111899623A (en) * | 2020-06-29 | 2020-11-06 | 河海大学 | Sediment phosphorus occurrence form simulation device and phosphorus release amount evaluation method |
| CN112577854A (en) * | 2019-09-29 | 2021-03-30 | 中国石油化工股份有限公司 | Experimental device for research pollutant migration rule under river and groundwater interact |
| CN113447400A (en) * | 2021-05-31 | 2021-09-28 | 长江大学 | Device and method for simulating phosphorus migration and conversion of groundwater in riparian zone |
| CN115266521A (en) * | 2022-07-01 | 2022-11-01 | 中国海洋大学 | Coastal zone underground water seepage simulation system considering temperature influence and working method |
| CN116840103A (en) * | 2023-03-14 | 2023-10-03 | 合肥工业大学 | Experimental device and simulation method for researching pollutant migration of coastal underground reservoir |
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| CN104991042A (en) * | 2015-07-20 | 2015-10-21 | 河海大学 | Seashore reservoir indoor desalination and salt resistance experimental simulation system and simulation method thereof |
| CN105301058A (en) * | 2015-10-14 | 2016-02-03 | 成都理工大学 | Imaging testing system for monitoring pollution dynamic condition of underground water and monitoring method of pollution dynamic condition of underground water |
| CN105866379A (en) * | 2016-04-11 | 2016-08-17 | 河海大学 | Device and method for simulating transportation of heterogeneous beach pollutants of coastal shallow layer |
| CN105866379B (en) * | 2016-04-11 | 2018-06-08 | 河海大学 | A kind of device and method for simulating the heterogeneous beach pollutant migration of strand shallow-layer |
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| CN109164211A (en) * | 2018-09-06 | 2019-01-08 | 石家庄铁道大学 | A kind of seawater invasion simulation test sandbox |
| CN110967279A (en) * | 2018-09-29 | 2020-04-07 | 天津大学 | Experimental device and experimental method for simulating migration and transformation behaviors of pollutants in near seawater-sediments and application of experimental device and experimental method |
| CN109459350A (en) * | 2018-12-27 | 2019-03-12 | 桂林理工大学 | It is a kind of for simulating the model test apparatus of heavy metal ion diffusion mobility in the soil body |
| CN109668809A (en) * | 2019-02-28 | 2019-04-23 | 水利部牧区水利科学研究所 | Valley plain band accumulation of soluble substances and Migration Simulation experimental provision and method |
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| CN115266521A (en) * | 2022-07-01 | 2022-11-01 | 中国海洋大学 | Coastal zone underground water seepage simulation system considering temperature influence and working method |
| CN116840103A (en) * | 2023-03-14 | 2023-10-03 | 合肥工业大学 | Experimental device and simulation method for researching pollutant migration of coastal underground reservoir |
| CN116840103B (en) * | 2023-03-14 | 2024-02-13 | 合肥工业大学 | Experimental device and simulation method for researching pollutant migration of coastal underground reservoir |
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Application publication date: 20130424 |