CN108205052A - Air flow method experimental simulation system and method during the air agitation of underground water original position is repaired - Google Patents
Air flow method experimental simulation system and method during the air agitation of underground water original position is repaired Download PDFInfo
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Abstract
Air flow method experimental simulation system and method in being repaired the present invention relates to a kind of air agitation of underground water original position belong to contaminated site control and recovery technique field.The system includes：Video camera and light source；Organic glass simulated slot, and dismountable aeration head is devised in simulated slot, top has the lucite spacer and gas collector of air-flow subregion, both sides are designed with overflow port, for collecting air-flow in aeration repair process in influence area at different location and can meet the air-flow in aeration repair process in influence area at different height by moving aeration head and overflow port position；Air compressing bottle enters simulated slot for providing compressed air from aeration head；Flowmeter, between Air compressing bottle and pressure gauge；Pressure sensor, between flowmeter and simulated slot；Overflow reception device, is connected with overflow port, for collecting the pure water that overflow goes out.The present invention has simple and feasible, and emulator is high, the advantages of can simulating actual place.
Description
Technical field
The present invention relates to contaminated site control and recovery technique field, more particularly to a kind of underground water original position air agitation is repaiied
Air flow method experimental simulation system and method in multiple.
Background technology
Important component of the underground water as water resource, is one of important sources of drinking water；But as society passes through
The fast development of Ji, soil and groundwater organic contamination getting worse.It is numerous in Chinese population, under the present situation of shortage of water resources,
How to effectively utilize and protect precious water resource, be a reality and it is urgent the problem of, be directly related to national economy and be good for
Health, lasting development.Underground water caused by organic pollution and soil pollution have complexity, concealment and harmfulness.The U.S.
Environmental Protection Administration (USEPA) reports that, in the U.S., storing the size sunken tank of oil product has about 2,500,000, the storage more than 410,000
Tank has leakage problem.By the end of 2012, China had gas station's quantity of legal business license more than 110,000, has numerous
Buried tank and oil pipeline are close to service life, and there are leakage problems.Further, since safeguard procedures are not in place and manage
The reasons such as it is not good at, the great environmentals contamination accidents such as explosion, leakage also happen occasionally.With country《Water prevention and cure of pollution action plan》
With《Soil Pollution Control action plan》Promulgation, underground water and organic pollution of soil problems demand are solved.
At present, the recovery technique of Organic Contamination of Groundwater is mainly divided to two classes：In-situ immobilization and showering.Showering because
The features such as its is of high cost, quantities is big is generally only applicable to the underground water pollution that pollutant concentration is high, pollution range is small.It is in situ
Recovery technique includes：Air agitation recovery technique in situ（AS）, permeable reactive barrier（PRB）, it is the reparation of electrochemical in-situ power, micro-
Bioremediation technology etc..Wherein AS technologies are considered as the most effective side of volatile organic contaminant in removal soil and groundwater
One of method.The technology is widely used due to high efficiency, quick and low cost.Its principle is new by being injected into saturation stratum
Fresh air, due to the concentration difference between gas-liquid, pollutant is constantly volatized into gas phase, and gas carries pollutant under the action of buoyancy
It gradually moves up, achievees the purpose that depollution.
Although existing experimental technique method can repair AS with AS influence areas in analogue observation groundwater remediation
Different location air flow method quantitative description is also measured and is studied without related experimental methods in middle influence area.AS is repaired
Different height air flow method quantitative description is even more no suitable experimental method to measure and study in middle influence area.Especially
Gas flow is one of important factor in order of contaminant removal efficiency in its AS recovery technique.Up to the present, it is most of to grind
Study carefully and show that air flow method is non-uniform：Gas flow near aeration well is significantly greater than the gas flow at influence area edge.
It is but same in influence area during the quantitative description or AS for different height air flow rate in specific aeration well vertical direction are repaired
Air flow rate size quantitative comparison at one height right over aeration well with influence area edge is no suitable experimental method
It measures and studies.
Invention content
Air flow method experimental simulation system in being repaired the purpose of the present invention is to provide a kind of air agitation of underground water original position
And method, solve the above problem of the existing technology.The present invention has simple and feasible, and emulator is high, can simulate reality
The advantages of place.
The above-mentioned purpose of the present invention is achieved through the following technical solutions：
Air flow method experimental simulation system during the air agitation of underground water original position is repaired, including：
Video camera 101 and light source 102, video camera 101 are used to record underground water aeration repair process simulated experiment phenomenon；
Organic glass simulated slot 201 between video camera 101 and light source 102, is filled with mould in organic glass simulated slot 201
Intend the quartz sand of sand and the pure water of simulated groundwater；201 bottom of organic glass simulated slot is equipped with aeration head A202, the aeration
Two detachable aeration head B205 of setting at the top of head A202 are aerated in repair process in influence area for measuring at different height
Air flow rate；Organic glass simulated slot 201 is divided into different lists by 201 top of organic glass simulated slot setting air baffle 204
Member, each unit are 4cm long, 2cm wide, 50cm high；201 both sides of organic glass simulated slot set several overflow ports 203, are used for
Keep liquid level constant；201 top of organic glass simulated slot is threadedly coupled with cover 206, and the cover 206 is equipped with outlet
Mouth 207, the gas outlet is connect with gas collector 600, and different positions in influence area are aerated in repair process for collecting
Put the air-flow at place；
The compressed air that Air compressing bottle 302 provides enters organic glass simulated slot 201 by aeration head A202；
Flowmeter 400 between Air compressing bottle 302 and pressure sensor 500, controls the compressed gas in aeration process
Flow；
Pressure sensor 500 is mounted between Air compressing bottle 302 and aeration head A202；
Gas collector 600 includes airtight bag 601 and threeway 602, and the airtight bag 601 passes through in threeway 602 and cover 206
Gas outlet 207 be connected, for collecting gas, with switch K1, K2 in threeway 602, the switch K2 be placed in airtight bag 601 and
The junction of threeway 602, the switch K1 are placed in the junction of external environment and threeway 602；Gas volume in airtight bag 601
It is obtained by drainage measurement；
Overflow reception device 700 is connected with overflow port 203, overflows for collecting when compressed gas is pumped into organic glass simulated slot 201
The pure water of outflow.
The organic glass simulated slot 201 be transparent organic glass simulated slot, quartz sand be transparent tekite sand, gas
Stream partition board 204 is poly (methyl methacrylate) plate, and aeration head B205 is detachable aeration head.
3rd, air flow method experimental simulation system during underground water original position according to claim 1 air agitation is repaired,
It is characterized in that：Pressure regulator valve 301 is connected on the Air compressing bottle 302.
The knob for adjusting flow is connected on the flowmeter 402.
Another object of the present invention is to provide air flow method experimental simulation during a kind of air agitation of underground water original position is repaired
The analogy method of system can collect the air-flow in aeration repair process in influence area at different location and be exposed by mobile
Gas head and overflow port position can meet the air-flow in influence area at different height in aeration repair process, so as to analyze aeration
The influence area interior air-flow regularity of distribution, includes the following steps in repair process：
During S1, detection underground water original position air agitation are repaired in simulating airflow distribution experimental system gas collector it is airtight
Property；Specifically, gas collector 600 is turned on the switch K2, K1 is turned off the switch, gas is then injected into airtight bag is filled, closes
Make and break closes K2 sealings into the water, checks the air-tightness of gas collector, it is ensured that gas collection process does not occur in experiment
Leakage after inspection, turns on the switch K1 and K2, discharges the gas in gas collector, is then shut off switch K2；
S2, quartz sand medium is loaded in organic glass simulated slot 201 using stucco method；Specifically, quartz sand is delayed with beaker
Slowly it is sprinkled into organic glass simulated slot 201 from 201 top of organic glass simulated slot, and along 201 length of organic glass simulated slot
Direction moves horizontally back and forth；The water surface is kept during filling higher than 2 ~ 3cm of sand face, to ensure not having residual in quartz sand medium
Air；In addition, it needs gently to tap simulated slot side wall while filling, to ensure that quartz sand medium loads than more uniform
With it is closely knit；
S3, organic glass simulated slot 201 is placed in esplanade, video camera 101 and light source 102, air compression are put in both sides
Bottle 302 is connected with flowmeter 400, pressure sensor 500 and aeration head A202, and cover 206 is placed on organic glass simulated slot 201
On, the gas outlet 207 in cover 206 is connected with gas collector 600, and overflow reception device 700 is connected with overflow port 203,
A required aeration head A202 and corresponding overflow port 203 are chosen in experiment every time；
The air-tightness of simulating airflow distribution experimental system during S4, the original position air agitation of detection underground water are repaired；Specifically, clamp exposure
Pipeline at gas head A202 adjusts the pressure regulator valve 301 at Air compressing bottle 302, increases pressure, opens the knob of flowmeter 400, inspection
Look into the air-tightness of connector near flowmeter 400, pressure sensor 500, it is ensured that gas does not have before simulated slot is reached in experiment
It leaks；After inspection, closing pressure-regulating valve 301 and flowmeter 400；
S5, start aeration experiment, slowly adjusting flowmeter makes the pressure of compressed gas be equal to after hydrostatic pressing force value, opens camera shooting
Machine shoots experimental phenomena；
After S6, compressed gas enter organic glass simulated slot 201, stable aerated flow, the pressure stability of gas to be compressed and
After overflow port does not have water discharge, the flow and displacement of gas are recorded, shoots experimental phenomena, and proceed by gas collection survey
Amount；Specifically, closing threeway 602 switchs K1, K2 is turned on the switch, starts simultaneously at timing, to the end of gas collection, is turned off the switch
K2 turns on the switch K1, while removes gas collector 600；Gas collection process passed through in the defined time at different location
The gas volume that gas collector 600 is collected calculates to obtain mean air flow flow in the unit interval, in gas collector 600
Gas volume in airtight bag 601 is obtained by drainage measurement；
Gas collection process is corresponding by converting detachable aeration head B205 and change at different height in S7, influence area
It realizes the position of overflow port 203；Detachable aeration head B205 is selected to compare initial aeration head A202 specifically, observing this experiment
The distance moved up, in S2 steps, quartz sand loads height during quartz sand is loaded into organic glass simulated slot 201
Increase the distance that equivalent aeration head moves up, the position selection of overflow port 203 will also increase the distance that equivalent aeration head moves up；Weight
Multiple step S4-S6 is measured and is obtained during aeration is repaired vertical heights of the aeration head B205 apart from air baffle 204 in influence area
Air-flow average flow rate；
S8, the position of the detachable aeration head B205 of transformation, different aeration pressure, quartz sand particle size are carried out repeatedly aeration and are repaired
Middle air flow method experiment, gathered data.
The beneficial effects of the present invention are：
（1）Sand is intended using transparent vitreous silica sand mo(u)ld, natural water-bearing layer opacity makes it be difficult to observe that air-flow is migrated,
Therefore researcher can not directly observe motion process of the gas in the soil body, choose quartz similar in physical characteristic and natural soil
It is effective method that sand, which substitutes sand grains,.
（2）Trough top is divided by different units using poly (methyl methacrylate) plate, gas can be used in repair process is aerated
Body collection device collects the air-flow at different location, so as to which quantitative description goes out to be aerated in reparation in influence area at different location
Air flow method situation, to analyze the air flow method rule during aeration is repaired in influence area at different location.
（3）Using removable and dismountable aeration head and corresponding overflow reception device, it is airtight to not only allow for device
Property and avoid influencing each other between different aeration heads, and meet in aeration repair process different height air-flow in influence area
The measurement of distribution is aerated in reparation in influence area air flow method rule, shadow in being repaired for aeration at different height to analyze
It rings region interior air-flow distribution theory and numerical analysis provides lot of experimental data, effective foundation and correction for mathematical model carries
It is supported for data, solution party is provided in actual repair place quantitative prediction can not be carried out to influence area interior air-flow flow
Method.
（4）Image Acquisition is carried out, and post-processed to aeration process using image capturing system, this method can be intuitive
Show the influence area of aeration and air flow method region, study itself and aeration pressure, sand grain size and aerodynamic etc.
Relationship.
In conclusion air flow method experimental simulation system and side in the underground water original position air agitation repair process of the present invention
Method has the advantages of simple and feasible, emulator is high.
Description of the drawings
Attached drawing described herein is used to provide further understanding of the present invention, and forms the part of the application, this hair
Bright illustrative example and its explanation do not constitute improper limitations of the present invention for explaining the present invention.
Fig. 1 is the system structure diagram of the present invention
Fig. 2 is the structure diagram of the organic glass simulated slot of the present invention；
Fig. 3 is the scheme of installation of the detachable aeration head of the present invention；
Fig. 4 is the structure diagram of the gas collector of the present invention；
Fig. 5 is flow chart of the method for the present invention；
Fig. 6 is the schematic diagram of the transparent tekite sand of the embodiment of the present invention；
Fig. 7 to Fig. 9 is the aeration image of the embodiment of the present invention.
In figure：101st, video camera；102nd, light source；201st, organic glass simulated slot；202nd, aeration head A；203rd, overflow port；
204th, air baffle；205th, detachable aeration head B；206th, cover；207th, gas outlet；301st, pressure regulator valve；302nd, Air compressing bottle；
400th, flowmeter；500th, pressure sensor；600th, gas collector；601st, airtight bag；602nd, threeway；700th, overflow receives dress
It puts.
Specific embodiment
The detailed content and its specific embodiment further illustrated the present invention below in conjunction with the accompanying drawings.
Laboratory experiment to underground water original position air agitation repair process is the important means of research aeration repair process.Especially
Gas flow is one of important factor in order of contaminant removal efficiency in its air agitation recovery technique in situ.The present invention relates to
Simulating airflow distribution experimental system and method in being repaired to a kind of air agitation of underground water original position, can be by the system to underground
Water aeration process is observed experiment, and quantitative description goes out the air flow method situation in influence area at different location during aeration is repaired
And meet the measurement of different height air flow method in influence area in aeration repair process, and study aeration pressure, sand
The influence for the interior air-flow regularity of distribution in influence area in aeration process such as grain size, aerodynamic.Wherein, system aspects master
Including：Transparent tekite sand, two-dimentional organic glass simulated slot, lucite spacer, detachable aeration head, air compression
Bottle, pipeline, flowmeter, pressure sensor and gas collector.It is primarily referred to as being handled by Image Acquisition in terms of method
Mode aeration process is analyzed and different location in influence area is collected in aeration repair process by partition board subregion
The air-flow at place and different height in influence area can be met in aeration repair process by moving aeration head and overflow port position
The air-flow at place, so as to analyze the influence area interior air-flow regularity of distribution in aeration repair process.Its core concept is described below：It uses
The transparent vitreous silica sand mo(u)ld of different-grain diameter intends sand, is loaded in order to observe the motion process of gas wherein using ramming method
In in organic glass simulated slot, to ensure that not having remaining air and quartz sand medium in quartz sand medium loads to compare
It is uniform closely knit.Trench bottom injecting compressed air is being simulated by pipeline, figure is carried out to aeration process using image capturing system
It as shooting, and is post-processed, and collects influence area in aeration repair process using gas collector in the process
Air-flow at interior different location and the zone of influence in aeration repair process can be met by moving aeration head and overflow port position
Air-flow in domain at different height, at different location in influence area in further analysis aeration repair process and different height
Air flow method rule is prepared.
Referring to shown in Fig. 1 to Fig. 9, air flow method experimental simulation system during underground water original position air agitation of the invention is repaired
System, including：
Video camera 101 and light source 102, video camera 101 are used to record underground water aeration repair process simulated experiment phenomenon；
Organic glass simulated slot 201 between video camera 101 and light source 102, is filled with mould in organic glass simulated slot 201
Intend the quartz sand of sand and the pure water of simulated groundwater；201 bottom of organic glass simulated slot is equipped with aeration head A202, the aeration
Two detachable aeration head B205 of setting, detachable aeration head B205 are segmented into two parts, are fixed on organic at the top of head A202
The pedestal of disposed thread and centre are added with the organic glass screw rod of L-type lucite tube and do not add on glass simulated slot 201
Added with the organic glass screw rod of L-type lucite tube, it is aerated in repair process in influence area at different height for measuring
Air flow rate；Organic glass simulated slot 201 is divided into different units by 201 top of organic glass simulated slot setting air baffle 204,
Each unit is 4cm long, 2cm wide, 50cm high；201 both sides of organic glass simulated slot set several overflow ports 203, for protecting
It is constant to hold liquid level；201 top of organic glass simulated slot is threadedly coupled with cover 206, and the cover 206 is equipped with gas outlet
207, the gas outlet is connect with gas collector 600, and different location in influence area is aerated in repair process for collecting
The air-flow at place；
The compressed air that Air compressing bottle 302 provides enters organic glass simulated slot 201 by aeration head A202；
Flowmeter 400 between Air compressing bottle 302 and pressure sensor 500, controls the compressed gas in aeration process
Flow；
Pressure sensor 500 is mounted between Air compressing bottle 302 and aeration head A202；
Gas collector 600 includes airtight bag 601 and threeway 602, and the airtight bag 601 passes through in threeway 602 and cover 206
Gas outlet 207 be connected, for collecting gas, with switch K1, K2 in threeway 602, the switch K2 be placed in airtight bag 601 and
The junction of threeway 602, the switch K1 are placed in the junction of external environment and threeway 602；Gas volume in airtight bag 601
It is obtained by drainage measurement；
Overflow reception device 700 is connected with overflow port 203, overflows for collecting when compressed gas is pumped into organic glass simulated slot 201
The pure water of outflow.
The organic glass simulated slot 201 be transparent organic glass simulated slot, quartz sand be transparent tekite sand, gas
Stream partition board 204 is poly (methyl methacrylate) plate.
Pressure regulator valve 301 is connected on the Air compressing bottle 302.
The knob for adjusting flow is connected on the flowmeter 402.Pressure sensor 500 can be gas gauge.
Air flow method experimental simulation method can collect aeration and repair in the underground water original position air agitation reparation of the present invention
In the process the air-flow in influence area at different location and by moving aeration head position can meet aeration repair process in
Air-flow in influence area at different height, so as to analyze the influence area interior air-flow regularity of distribution in aeration repair process, including
Following steps：
During S1, detection underground water original position air agitation are repaired in simulating airflow distribution experimental system gas collector it is airtight
Property；Specifically, gas collector 600 is turned on the switch K2, K1 is turned off the switch, gas is then injected into airtight bag is filled, closes
Make and break closes K2 sealings into the water, checks the air-tightness of gas collector 600, it is ensured that gas collection process is not sent out in experiment
Raw leakage after inspection, turns on the switch K1 and K2, discharges the gas in gas collector, is then shut off switch K2；
S2, quartz sand medium is loaded in organic glass simulated slot 201 using stucco method；Specifically, quartz sand is delayed with beaker
Slowly it is sprinkled into organic glass simulated slot 201 from 201 top of organic glass simulated slot, and along 201 length of organic glass simulated slot
Direction moves horizontally back and forth；The water surface is kept during filling higher than 2 ~ 3cm of sand face, to ensure not having residual in quartz sand medium
Air；In addition, it needs gently to tap simulated slot side wall while filling, to ensure that quartz sand medium loads than more uniform
With it is closely knit；
S3, organic glass simulated slot 201 is placed in esplanade, video camera 101 and light source 102, air compression are put in both sides
Bottle 302 is connected with flowmeter 400, pressure sensor 500 and aeration head A202, and cover 206 is placed on organic glass simulated slot 201
On, the gas outlet 207 in cover 206 is connected with gas collector 600, and overflow reception device 700 is connected with overflow port 203,
A required aeration head A202 and corresponding overflow port 203 are chosen in experiment every time；
The air-tightness of simulating airflow distribution experimental system during S4, the original position air agitation of detection underground water are repaired；Specifically, clamp exposure
Pipeline at gas head A202 adjusts the pressure regulator valve 301 at Air compressing bottle 302, increases pressure, opens the knob of flowmeter 400, inspection
Look into the air-tightness of connector near flowmeter 400, pressure sensor 500, it is ensured that gas does not have before simulated slot is reached in experiment
It leaks；After inspection, closing pressure-regulating valve 301 and flowmeter 400；
S5, start aeration experiment, slowly adjusting flowmeter makes the pressure of compressed gas be equal to after hydrostatic pressing force value, opens camera shooting
Machine shoots experimental phenomena；
After S6, compressed gas enter organic glass simulated slot 201, stable aerated flow, the pressure stability of gas to be compressed and
After overflow port does not have water discharge, the flow and displacement of gas are recorded, shoots experimental phenomena, and proceed by gas collection survey
Amount；Specifically, closing gas collector 600 switchs K1, K2 is turned on the switch, starts simultaneously at timing, to the end of gas collection, closed
K2 is closed in make and break, turns on the switch K1, while remove gas collector；Gas collection process passes through the defined time at different location
The gas volume that interior gas collector 600 is collected calculates to obtain mean air flow flow in the unit interval, gas collector 600
Gas volume in middle airtight bag 601 is obtained by drainage measurement；
Gas collection process is corresponding by converting detachable aeration head B205 and change at different height in S7, influence area
It realizes the position of overflow port 203；Detachable aeration head B205 is selected to compare initial aeration head A202 specifically, observing this experiment
The distance moved up, in S2 steps, quartz sand loads height during quartz sand is loaded into organic glass simulated slot 201
Increase the distance that equivalent aeration head moves up, the position selection of overflow port 203 will also increase the distance that equivalent aeration head moves up；Weight
Multiple step S4-S6 is measured and is obtained during aeration is repaired vertical heights of the aeration head B205 apart from air baffle 204 in influence area
Air-flow average flow rate；
S8, the position of the detachable aeration head B205 of transformation, different aeration pressure, quartz sand particle size are carried out repeatedly aeration and are repaired
Middle air flow method experiment, gathered data.
The foregoing is merely the preferred embodiments of the present invention, are not intended to restrict the invention, for the technology of this field
For personnel, the invention may be variously modified and varied.All any modification, equivalent substitution, improvement and etc. made for the present invention,
It should all be included in the protection scope of the present invention.
Claims (5)
- Air flow method experimental simulation system during 1. a kind of air agitation of underground water original position is repaired, it is characterised in that：Including：Video camera（101）And light source（102）, video camera（101）For recording underground water aeration repair process simulated experiment phenomenon；Organic glass simulated slot（201）, positioned at video camera（101）And light source（102）Between, organic glass simulated slot（201）In The pure water of quartz sand and simulated groundwater filled with simulation sand；201 bottom of organic glass simulated slot is equipped with aeration head A （202）, the aeration head A（202）Top sets two detachable aeration head B（205）, shadow in repair process is aerated for measuring Ring the air flow rate at different height in region；Organic glass simulated slot（201）Top sets air baffle（204）By organic glass Glass simulated slot（201）It is divided into different units, each unit is 4cm long, 2cm wide, 50cm high；Organic glass simulated slot（201）Two While several overflow ports are set（203）, for keeping liquid level constant；Organic glass simulated slot（201）Top and cover （206）It is threadedly coupled, the cover（206）It is equipped with gas outlet（207）, the gas outlet and gas collector（600）Even It connects, for collecting the air-flow being aerated in repair process in influence area at different location；Air compressing bottle（302）The compressed air of offer passes through aeration head A（202）Into organic glass simulated slot（201）；Flowmeter（400）, mounted on Air compressing bottle（302）And pressure sensor（500）Between, control the pressure in aeration process The flow of contracting gas；Pressure sensor（500）Mounted on Air compressing bottle（302）With aeration head A（202）Between；Gas collector（600）Including airtight bag（601）And threeway（602）, the airtight bag（601）Pass through threeway（602） With cover（206）On gas outlet（207）It is connected, for collecting gas, threeway（602）It is upper to carry switch K1, K2, the switch K2 is placed in airtight bag（601）With threeway（602）Junction, the switch K1 is placed in external environment and threeway（602）Connection Place；Airtight bag（601）In gas volume obtained by drainage measurement；Overflow reception device（700）, with overflow port（203）It is connected, organic glass simulated slot is pumped into for collecting compressed gas （201）The pure water that Shi Yiliu goes out.
- Air flow method experimental simulation system during 2. underground water original position according to claim 1 air agitation is repaired, feature It is：The organic glass simulated slot（201）For transparent organic glass simulated slot, quartz sand is transparent tekite sand, gas Flow partition board（204）For poly (methyl methacrylate) plate, aeration head B（205）For detachable aeration head.
- Air flow method experimental simulation system during 3. underground water original position according to claim 1 air agitation is repaired, feature It is：The Air compressing bottle（302）On be connected with pressure regulator valve（301）.
- Air flow method experimental simulation system during 4. underground water original position according to claim 1 air agitation is repaired, feature It is：The flowmeter（402）On be connected with adjust flow knob.
- Air flow method experiment mould during 5. underground water original position as claimed in any of claims 1 to 4 air agitation is repaired The analogy method of plan system, it is characterised in that：The air-flow in influence area at different location in aeration repair process can be collected And the gas in aeration repair process in influence area at different height can be met by moving aeration head and overflow port position Stream so as to analyze the influence area interior air-flow regularity of distribution in aeration repair process, includes the following steps：During S1, detection underground water original position air agitation are repaired in simulating airflow distribution experimental system gas collector it is airtight Property；Specifically, gas collector turns on the switch K2, K1 is turned off the switch, gas is then injected into airtight bag is filled, turns off the switch K2 is sealed into the water, checks the air-tightness of gas collector, it is ensured that gas collection process does not leak in experiment, inspection After looking into, K1 and K2 are turned on the switch, discharges the gas in gas collector, is then shut off switch K2；S2, quartz sand medium is loaded in organic glass simulated slot using stucco method；Specifically, with beaker by quartz sand slowly from Organic glass simulated slot top is sprinkled into organic glass simulated slot, and is moved along organic glass simulated slot length direction is horizontal back and forth It is dynamic；The water surface is kept during filling higher than 2 ~ 3cm of sand face, to ensure not having remaining air in quartz sand medium；In addition, It needs gently to tap simulated slot side wall while filling, to ensure that quartz sand medium loads than more uniform and closely knit；S3, organic glass simulated slot is placed in esplanade, video camera and light source, Air compressing bottle and flow are put in both sides Meter, pressure sensor and aeration head A are connected, and cover is placed on organic glass simulated slot, gas outlet and gas collection in cover Device is connected, and overflow reception device is connected with overflow port, and a required aeration head A and corresponding overflow are chosen in experiment every time Mouthful；The air-tightness of simulating airflow distribution experimental system during S4, the original position air agitation of detection underground water are repaired；Specifically, clamp exposure Pipeline at gas head A adjusts the pressure regulator valve at Air compressing bottle, increases pressure, opens the knob of flowmeter, checks flowmeter, pressure The air-tightness of connector near force snesor, it is ensured that gas is no before simulated slot is reached in experiment leaks；Check knot Shu Hou, closing pressure-regulating valve and flowmeter；S5, start aeration experiment, slowly adjusting flowmeter makes the pressure of compressed gas be equal to after hydrostatic pressing force value, opens camera shooting Machine shoots experimental phenomena；After S6, compressed gas enter organic glass simulated slot, stable aerated flow, the pressure stability of gas to be compressed and overflow After mouth is without water discharge, the flow and displacement of gas are recorded, shoots experimental phenomena, and proceed by gas collection measurement； Specifically, closing three-way cock K1, K2 is turned on the switch, starts simultaneously at timing, to the end of gas collection, turns off the switch K2, opened K1 is switched, while removes gas collector；Gas collection process is filled by gas collection in the defined time at different location The gas volume for putting collection calculates to obtain mean air flow flow in the unit interval, the gas body in gas collector in airtight bag Product is obtained by drainage measurement；Gas collection process is overflow accordingly by converting detachable aeration head B and changing at different height in S7, influence area It realizes the position of head piece；Detachable aeration head B is selected to compare the distance that initial aeration head A is moved up specifically, observing this experiment, In S2 steps, quartz sand, which loads height, during quartz sand is loaded into organic glass simulated slot will also increase equivalent aeration The distance that head moves up, the position selection of overflow port will also increase the distance that equivalent aeration head moves up；Step S4-S6 is repeated, is measured Obtain during aeration is repaired air-flow average flow rates of the aeration head B apart from the vertical height of air baffle in influence area；S8, the position of the detachable aeration head B of transformation, different aeration pressure, quartz sand particle size carry out gas in repeatedly aeration reparation Flow distribution is tested, gathered data.
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| CN201810018342.4A CN108205052A (en) | 2018-01-09 | 2018-01-09 | Air flow method experimental simulation system and method during the air agitation of underground water original position is repaired |
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| CN113390663A (en) * | 2021-07-14 | 2021-09-14 | 农业农村部南京农业机械化研究所 | Liquid collection method and device for variable spray test |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111855957A (en) * | 2020-07-08 | 2020-10-30 | 河北大学 | Test system and method capable of observing aeration airflow flow distribution in water-bearing soil layer |
| CN113311133A (en) * | 2021-06-23 | 2021-08-27 | 成都理工大学 | Test method for repairing heterogeneous soil groundwater |
| CN113311133B (en) * | 2021-06-23 | 2022-08-09 | 成都理工大学 | Test method for repairing heterogeneous soil groundwater |
| CN113390663A (en) * | 2021-07-14 | 2021-09-14 | 农业农村部南京农业机械化研究所 | Liquid collection method and device for variable spray test |
| CN113390663B (en) * | 2021-07-14 | 2023-12-22 | 农业农村部南京农业机械化研究所 | Liquid collecting method and device for variable spraying test |
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