CN110455686A - A kind of difference underground water nourishment condition subsurface flow exchange analog measurement method - Google Patents
A kind of difference underground water nourishment condition subsurface flow exchange analog measurement method Download PDFInfo
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- CN110455686A CN110455686A CN201910729434.8A CN201910729434A CN110455686A CN 110455686 A CN110455686 A CN 110455686A CN 201910729434 A CN201910729434 A CN 201910729434A CN 110455686 A CN110455686 A CN 110455686A
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Abstract
The invention discloses a kind of different underground water nourishment condition subsurface flows to exchange analog measurement method, comprising the following steps: is successively laid with argillic horizon and quartz sand layer in bottom of gullet, the two sides of inboard wall of cistern are laid with water pipe with holes;Stream shape control panel is placed in sink center and is inserted into quartz sand layer, the quartz sand inside control panel is taken out, the river of manual simulation is formed;Control panel is taken out, injection is with coloured water into sink, the injected clear water into water pipe with holes, and in undercurrent exchange area, quartz sand shows deep mixed color with the exchange of lateral undercurrent;The traveling locus of color is recorded by video camera and display instrument;When undercurrent exchange area color data no longer changes, the water in sink is discharged.It is high-efficient, speed is fast the invention avoids manual injection's tracer;The recharge laterally of analog Groundwater table water;High accuracy data can be continuously measured, test material is reusable;Measure sensitive, intuitive, the lateral undercurrent exchange transient process of accurate simulation.
Description
Technical field
The present invention relates to a kind of method of analogue measurement Riparian Zone undercurrent layer water quality exchanges more particularly to it is a kind of differently under
Water nourishment condition subsurface flow exchanges analog measurement method.
Background technique
Phreatic zone be riverbed middle-shallow layer underground water with surface water there are the interlaced areas of energy circulation and mass exchange, at this
There are dissolved gas concentration gradient, organic life entity concentration gradient, pH value gradient and temperature gradients in a Mixed Zone.These
Physics, biological and chemical gradient, important living environment is provided for many invertebrates, is the heat of biodiversity research
Point region;These gradients also result in biogeochemical reaction, eventually affect the water quality in river.
Undercurrent exchange can be divided into the exchange of vertical undercurrent and the lateral undercurrent exchange of Riparian Zone of riverbed phreatic zone, study at present
The indoor water tank device of the lateral undercurrent exchange process mode of Riparian Zone puts aside recharge of ground water condition, and mostly uses molten
Matter trace method, however this is the semi-quantitative analysis to river undercurrent switch mode, solute concentration is difficult to accurately during test
Measurement, measurement error is big, can not precisely be portrayed the spatial-temporal distribution characteristic of river phreatic zone dynamic exchange process, Bu Nengzhun
The transient process of the true lateral undercurrent exchange of simulation, while observation and the cost of acquisition equipment are generally higher, operate also more multiple
It is miscellaneous, it is unfavorable for prolonged continuous observation.
Summary of the invention
Goal of the invention: it is an object of the present invention to provide a kind of different underground water nourishment condition subsurface flows to exchange analogue measurement side
Method solves and does not consider recharge of ground water condition in the prior art and be unable to asking for the lateral undercurrent exchange transient process of accurate simulation
Topic.
Technical solution: the present invention the following steps are included:
(1) it is laid with argillic horizon in bottom of gullet, is laid with quartz sand layer above argillic horizon, the two sides of inboard wall of cistern are equipped with band
Hole water pipe;
(2) stream shape control panel is placed in sink center and be inserted into quartz sand layer, inside stream shape control panel
Quartz sand take out, form the river of manual simulation;
(3) stream shape control panel is taken out, into sink, injection is with coloured water, the injected clear water into water pipe with holes,
To form the lateral undercurrent exchange under the conditions of the recharge of ground water, in undercurrent exchange area, quartz sand is handed over lateral undercurrent
Carrying out of changing shows deep mixed color;
(4) traveling locus of color is recorded by video camera and display instrument;
(5) when undercurrent exchange area color data no longer changes, the water in sink is discharged;
(6) injected clear water into sink, in undercurrent exchange area, what the color in quartz sand was exchanged with lateral undercurrent
It is gradually decorporated, is repeated step (4);
(7) data processing.
The two sides of the inboard wall of cistern are equipped with water pipe with holes, and the water inlet pipe of the water pipe with holes is connect with the second water pump,
Water inlet pipe is equipped with the second valve and second flowmeter, for controlling the water flow velocity into water pipe with holes.
The side of the sink is equipped with water inlet, and the other side is equipped with water outlet, and water inlet passes through penstock connection first
Water pump, water outlet connect water output duct, wherein and the height of water inlet is greater than the height of water outlet, to guarantee the unimpeded flowing of water,
Avoid ponding.
First water pump and water output duct is located in same water tank.
The penstock is equipped with first flowmeter and the first valve, for controlling the water stream entered in sink
Speed.
The bottom of the sink side is connected with lifting platform, and the lifting platform and penstock are located at sink the same side,
Gradient size is controlled by lifting platform.
The side of the sink accompanies bracket, and cradle top is equipped with video camera, and video camera is connect with display instrument, uses video camera
The undercurrent exchange process of vertical shooting water.
It is high-efficient, speed is fast the utility model has the advantages that the invention avoids manual injection's tracer;Analog Groundwater table
The recharge laterally of water;High accuracy data can be continuously measured, test material is reusable;Measure sensitive, intuitive, accurate simulation side
Transient process is exchanged to undercurrent.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention;
Fig. 2 is top view of the invention;
Fig. 3 is stream shape control panel schematic diagram of the invention.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings.
It is as shown in Figure 1 to Figure 3 the measuring device of the invention used, including the first water tank 1 and the second water tank 2, on water tank
Side is equipped with sink 8, and sink 8 is 1.8m long, wide 100cm, high 10cm, and making material is organic glass, and 8 bottom of sink is laid with one layer
The smooth argillic horizon 11 with a thickness of 5mm is laid with one layer of smooth quartz sand layer 12 with a thickness of 7cm, clay on argillic horizon 11
The effect of layer 11 is to prevent quartz sand washed away, for keeping the stabilization of quartz sand.The inclined placement of sink 8, left side bottom
Portion is fixed with lifting platform 6, can pass through the Level Change gradient of adjusting lifting platform 6, so as to adjust the height of sink 8, anti-water stopping trough 8
Internal ponding.Water inlet is equipped on the left of sink 8, right side is equipped with water outlet, and the diameter in 8 water inlet of sink and water outlet is
25mm, the water inlet center of circle are located at the upward 5cm of bottom of gullet, and water outlet and 8 bottom of sink are tangent, and water outlet height is lower than water inlet
Open height ensure that water will not accumulate in 8 downstream of sink when there are gradient, unimpeded can flow.Water inlet passes through penstock 7
It is connect with the first water pump 3, the first intake pump 3 is put into the first water tank 1 or the second water tank 2, and penstock 7 is equipped with first-class
Meter 4 and the first valve 5 enter the flow velocity of sink 8 by the control of the first valve 5, and are measured by first flowmeter 4;Water
Slot water outlet connects water output duct 9, and outlet conduit 9 directly gos deep into the first water tank 1 or the second water tank 2, wherein the first water pump 3
It is located in same water tank with water output duct 9.8 left side wall of sink is equipped with bracket 10, is connected with video camera 13 at the top of bracket 10, takes the photograph
Camera 13 is connect by data line 15 with display instrument 14, can be shot image to video camera 13 in real time and be carried out identification technology, show
The color of a certain moment each position.
As shown in Fig. 2, the both sides of the edge of 8 inner wall of sink are respectively provided with a water pipe 17 with holes, and be close to flume wall, make water from
After water pipe 17 with holes overflows, it can only be flowed into sink 8, for simulating the lateral recharge of ground water, water in water pipe 17 with holes
Flow to in river water flow to it is identical.The water inlet pipe of water pipe 17 with holes connects the second water pump 20, is additionally provided with second on water inlet pipe
Flowmeter 19 and the second valve 18, the flow velocity of water can be controlled by the second valve 18 in water pipe 17 with holes, and pass through second flow
19 are counted to measure.The water inlet water pipe of water pipe 17 with holes is connected with the second water pump 20 is put into the water tank equipped with clear water, and outlet pipe is direct
It is put into the water tank equipped with clear water.
First water pump 3 and the second water pump 20 are DC minitype sinking pump, H-Max 5m, maximum stream flow 4L/
min.First water pump 3 is connected by penstock 7 with water inlet, and the first valve 5 and first-class is sequentially connected in penstock 7
Meter 4.For the leakage for preventing water, good leakproofness, penstock 7 and the first water pump 3, first flowmeter 4 and first are kept
The junction of valve 5, the junction of water output duct 9 and water outlet, water pipe 17 with holes and the second water pump 20, second flowmeter 19 and
The junction of second valve 18 is mounted on antiseepage rubber mat.
As shown in Figure 1, the lifting platform 6 of 8 one side bottom of sink can control the gradient size of sink 8, specified load capacity
100kg, minimum altitude 2cm, maximum height 10cm, bed dimension wide 2cm, long 10cm have good bearing capacity and pressure resistance
Property.6 top of lifting platform and the junction of sink 8 are equipped with non-slip mat, to prevent the landing of water stopping trough 8.The lower part of bracket 10 could be sandwiched in
The side of sink 8, video camera 13 are vertically mounted on the top of bracket 10, and the center of face sink 8 is vertically clapped with video camera 13
Take the photograph the undercurrent exchange process of water.
Specifically includes the following steps:
(1) arrangement of clay, quartz sand and water tank:
Clay is laid on to the bottom of sink 8, quartz sand layer 12 is laid on argillic horizon 11, quartz sand layer 12 should be kept as far as possible
It is smooth, pigment is added into the water of a water tank, the water in another water tank is clear water.
(2) determination of river geometry and flow:
Stream shape control panel 16 is placed in sink center and is inserted into quartz sand layer 12, by stream shape control panel 16
The quartz sand at intermediate position takes out, and forms the river of manual simulation, wherein stream shape control panel 16 is as shown in figure 3, using four
Week closing, the hollow plates of upper and lower opening, for drawing river in quartz sand layer 12, by the first water pump 3 and water output duct 9
It is placed in the water tank equipped with pigment, adjusts the first valve 5 and control water flow, the reading flow after 4 stable reading of first flowmeter
Amount.
(3) stream shape control panel is taken out, simulated groundwater supply:
Stream shape control panel 16 is taken out, the second water pump 20 and the second valve 18 are opened, by the second water pump 20 and outlet pipe
It is put into the water tank equipped with clear water, in the region of undercurrent exchange, quartz sand shows the depth with carrying out of exchanging of lateral undercurrent
Different pigment colour.
(4) record of migration path and color:
Video camera 13 is vertically mounted on the top of bracket 10, records the traveling locus of color, display instrument 14 can be in real time to taking the photograph
The image that camera 13 takes carries out identification technology, records the color at a certain moment.
(5) valve is closed, draining:
When the color data of undercurrent exchange area no longer changes, it is believed that undercurrent exchange has reached stable state, at this time
The first valve 5 is closed, lifting platform 6 is raised, the water in sink 8 is made to accelerate to be discharged into currently used water tank.
(6) using the water tank that clear water is housed:
First water pump 3 and water output duct 9 are put into the water tank equipped with clear water, in the region of undercurrent exchange, in quartz sand
Color gradually decorporate with the progress that lateral undercurrent exchanges, repeat step (4).
(7) data processing:
The interactive process that river and two sides riverbank underground water are analyzed by the color change of riverbank phreatic zone, determines Riparian Zone
The key parameters such as the depth capacity of lateral undercurrent exchange process, maximum residence time, coverage.
Coordinatograph processing is carried out to riverbank phreatic zone, colored areas area, that is, coverage is calculated according to color at each point,
Measure depth capacity, from begin to use water tank that pigment is added dropwise to colour stable it is constant when a length of maximum residence time.
Claims (7)
1. a kind of difference underground water nourishment condition subsurface flow exchanges analog measurement method, which comprises the following steps:
(1) it is laid with argillic horizon in bottom of gullet, is laid with quartz sand layer above argillic horizon, the two sides of inboard wall of cistern are equipped with water with holes
Pipe;
(2) stream shape control panel is placed in sink center and be inserted into quartz sand layer, by the stone inside stream shape control panel
Sand takes out, and forms the river of manual simulation;
(3) stream shape control panel is taken out, into sink, injection is with coloured water, the injected clear water into water pipe with holes, thus
The lateral undercurrent exchange under the conditions of the recharge of ground water is formed, in undercurrent exchange area, quartz sand is exchanged with lateral undercurrent
It carries out showing deep mixed color;
(4) traveling locus of color is recorded by video camera and display instrument;
(5) when undercurrent exchange area color data no longer changes, the water in sink is discharged;
(6) injected clear water into sink, in undercurrent exchange area, progress that the color in quartz sand is exchanged with lateral undercurrent
It gradually decorporates, repeats step (4);
(7) data processing.
2. a kind of different underground water nourishment condition subsurface flows according to claim 1 exchange analog measurement method, feature
It is, the two sides of the inboard wall of cistern are equipped with water pipe with holes, and the water inlet pipe of the water pipe with holes is connect with the second water pump, intake
Pipe is equipped with the second valve and second flowmeter.
3. a kind of different underground water nourishment condition subsurface flows according to claim 1 or 2 exchange analog measurement method, special
Sign is that the side of the sink is equipped with water inlet, and the other side is equipped with water outlet, and water inlet connects the first water by penstock
Pump, water outlet connect water output duct, wherein the height of water inlet is greater than the height of water outlet.
4. a kind of different underground water nourishment condition subsurface flows according to claim 3 exchange analog measurement method, feature
It is, first water pump and water output duct are located in same water tank.
5. a kind of different underground water nourishment condition subsurface flows according to claim 3 exchange analog measurement method, feature
It is, the penstock is equipped with first flowmeter and the first valve.
6. a kind of different underground water nourishment condition subsurface flows according to claim 1 exchange analog measurement method, feature
It is, the bottom of the sink side is connected with lifting platform, and the lifting platform and penstock are located at sink the same side.
7. a kind of different underground water nourishment condition subsurface flows according to claim 1 exchange analog measurement method, feature
It is, the side of the sink accompanies bracket, and cradle top is equipped with video camera, and video camera is connect with display instrument.
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Cited By (4)
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CN111999032A (en) * | 2020-08-25 | 2020-11-27 | 中国地质科学院水文地质环境地质研究所 | Dynamic simulation method for groundwater recharge by surface water |
CN112484958A (en) * | 2020-10-30 | 2021-03-12 | 中国地质大学(北京) | Subsurface flow zone solute transport research sand tank model capable of changing underground water underflow |
CN112556985A (en) * | 2020-12-16 | 2021-03-26 | 同济大学 | Riparian zone lateral undercurrent exchange simulation device with adjustable length and test method |
CN112816177A (en) * | 2020-12-30 | 2021-05-18 | 同济大学 | Riparian zone lateral undercurrent exchange process simulation device based on dye tracing |
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Publication number | Priority date | Publication date | Assignee | Title |
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CN112556985B (en) * | 2020-12-16 | 2021-10-08 | 同济大学 | Riparian zone lateral undercurrent exchange simulation device with adjustable length and test method |
CN112816177A (en) * | 2020-12-30 | 2021-05-18 | 同济大学 | Riparian zone lateral undercurrent exchange process simulation device based on dye tracing |
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