CN111999032B - Dynamic simulation method for groundwater recharge by surface water - Google Patents
Dynamic simulation method for groundwater recharge by surface water Download PDFInfo
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Abstract
The invention discloses a dynamic simulation method for groundwater recharge by surface water, which comprises the following steps: equipment assembling: connecting a surface water input unit, a ground water input unit, a discharge unit, a circulation monitoring unit, a river simulation unit, an aeration zone simulation unit and an aquifer simulation unit; underground water flow field simulation: controlling the communication between the underground water input unit and the aquifer simulation unit and the communication between the discharge unit and the aquifer simulation unit to obtain a stable underground flow field; infiltration simulation: controlling the communication between the surface water input unit and the river simulation unit and the communication between the discharge unit and the river simulation unit, and obtaining the aeration zone infiltration amount and the effective back-up amount; and (3) infiltration monitoring: the circulation monitoring unit monitors the moisture content or liquid level height in the aeration zone simulation unit and the aquifer simulation unit; the influence of the infiltration water on the groundwater volume under different runoff conditions of the river can be dynamically and three-dimensionally monitored.
Description
Technical Field
The invention relates to the technical field of experimental simulation, in particular to a dynamic simulation method for replenishing groundwater by surface water.
Background
Underground water is an important water resource in China, and more than 400 of 657 cities in China use the underground water as drinking water sources. Taking the Jingjin Ji area as an example, the occupation ratio of the groundwater in the drinking water is up to more than 70%. However, since groundwater in some regions is in an overproduction state for a long time, a series of environmental problems such as deterioration of groundwater quality and ground settlement occur.
Groundwater recharge is an effective measure for solving the problem of water supply safety, recovering the exploitation capability of a water source area and improving the groundwater environment. At present, with the improvement of water supply, rain flood utilization rate and reclaimed water resource in the south-to-north water transfer project, a chance is provided for improvement of groundwater resource conservation.
Due to the lack of corresponding surface water recharge underground water simulation devices and research methods, most of the existing researches are directly based on the monitoring and evaluation of the discharged recharge underground water of rivers and the like in field sites. Therefore, the area with the recharging potential cannot be accurately identified due to the lack of scientific analysis and prediction of the recharging amount of the underground water under different recharging conditions, and the main reason for limiting China to carry out recharging treatment on the underground water super-exploitation area by utilizing surface water in a large scale is also considered. Therefore, only according to the simulation device and the evaluation method adopted by the existing research institute, the influence of the infiltration water on the groundwater recharge quantity under different runoff conditions of the river cannot be intuitively monitored, and the problem of high difficulty in evaluating the groundwater recharge effect of the surface water is caused.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is that the defect that the influence of the infiltration water on the groundwater volume under different runoff conditions of the river cannot be dynamically and three-dimensionally monitored due to the lack of a corresponding surface water recharge groundwater simulation method.
Therefore, the invention provides a dynamic simulation method for groundwater recharge of surface water, which comprises the following steps:
equipment assembling: connecting a surface water input unit, a ground water input unit, a discharge unit, a circulation monitoring unit, a river simulation unit, an aeration zone simulation unit and an aquifer simulation unit;
simulating the groundwater flow field: controlling the communication between the underground water input unit and the aquifer simulation unit and the communication between the discharge unit and the aquifer simulation unit to obtain a stable underground flow field;
infiltration simulation: controlling the communication between the surface water input unit and the river simulation unit and the communication between the discharge unit and the river simulation unit, and obtaining the aeration zone infiltration amount and the effective back-up amount;
and (3) infiltration monitoring: the circulation monitoring unit monitors the moisture content or liquid level height in the aeration zone simulation unit and the aquifer simulation unit;
optionally, in the above method for dynamically simulating groundwater recharge by surface water, the step of assembling the apparatus further includes: the water level monitoring piece is communicated with the aeration zone simulation unit and the aquifer simulation unit; the infiltration monitoring step further comprises: monitoring the liquid level heights of the aeration zone simulation unit and the aquifer simulation unit through the water level monitoring piece; and/or
The device assembling step includes: the soil moisture sensor is arranged in the aeration zone simulation unit and the aquifer simulation unit; the infiltration monitoring step comprises: and monitoring the moisture content in the aeration zone simulation unit and the aquifer simulation unit through the soil moisture sensor.
Optionally, in the above method for dynamically simulating groundwater recharging by surface water, the apparatus assembling step further includes:
assembly of groundwater flow monitoring: a first flow monitoring member of the circulation monitoring unit is in communication with a first input port of the aquifer simulation unit; and a second flow monitoring piece of the circulation monitoring unit is communicated with a first output port of the aquifer simulation unit.
Optionally, in the above method for dynamically simulating groundwater recharging by surface water, the apparatus assembling step further includes:
assembling surface water flow monitoring: the third flow monitoring piece of the circulation monitoring unit is communicated with the second input port of the river simulation unit; and a fourth flow monitoring piece of the circulation monitoring unit is communicated with a second output port of the river simulation unit.
Optionally, in the above dynamic simulation method for groundwater recharge by surface water, in the infiltration simulation step,
and obtaining the aeration zone infiltration amount through the flow difference between the input flow of the second input port and the output flow measured by the second output port.
And obtaining the effective back-up quantity through the output flow difference of the second output port before and after the infiltration simulation step.
Optionally, in the above method for dynamically simulating groundwater recharging by surface water, the apparatus assembling step further includes:
installation of underground water input unit: the first water storage tank is communicated with the first input port through a first input pipe; the first water storage tank is communicated with the aeration structure; the first input pipe is provided with the first flow monitoring piece.
Installation of the surface water input unit: a second water storage tank of the surface water input unit is communicated with the first input port through a second input pipe; the third flow monitoring piece is arranged on the second input pipe;
mounting of the discharge unit: the waste water tank is communicated with the first output port through a first output pipe; a second flow monitoring piece is arranged on the first output pipe; the waste water tank is communicated with the second output port through the second output pipe; and the second output pipe is provided with the fourth flow monitoring piece.
Optionally, in the above method for dynamically simulating groundwater recharge by surface water, the step of assembling the apparatus further includes:
installation of the circulation monitoring unit: installing a circulation detection unit in the aeration zone simulation unit and the aquifer simulation unit;
connection of the analog unit: and the river simulation unit, the aeration zone simulation unit and the aquifer simulation unit are sequentially connected.
Optionally, in the above method for dynamically simulating groundwater recharging by surface water, before the step of connecting the simulation unit, the method further includes:
filling: and filling media into the river simulation unit, the aeration zone simulation unit and the aquifer simulation unit respectively.
Optionally, in the above method for dynamically simulating groundwater recharging by surface water, the apparatus assembling step further includes: the soil monitoring piece is arranged in the aeration zone simulation unit and the aquifer simulation unit; the back-supplementing monitoring probe is connected with an output port of the water level monitoring piece;
the infiltration simulation step further comprises: and the recharge monitoring probe and the soil monitoring part monitor the water quality change in the aeration zone simulation unit and the aquifer simulation unit.
Optionally, in the above method for dynamically simulating groundwater recharging by surface water, the apparatus assembling step further includes: the first water quality monitoring probe is connected with the first water storage tank; and the second water quality monitoring probe is connected with the second water storage tank.
The groundwater flow field simulation further comprises: the first water quality monitoring probe monitors the water quality in the first water storage tank;
the infiltration simulation step further comprises: and the second water quality monitoring probe monitors the water quality in the second water storage tank.
The technical scheme provided by the invention has the following advantages:
the invention provides a dynamic simulation method for groundwater recharge by surface water, which comprises the following steps:
equipment assembly: connecting a surface water input unit, a ground water input unit, a discharge unit, a circulation monitoring unit, a river simulation unit, an aeration zone simulation unit and an aquifer simulation unit;
simulating the groundwater flow field: controlling the communication between the underground water input unit and the aquifer simulation unit and the communication between the discharge unit and the aquifer simulation unit to obtain a stable underground flow field;
infiltration simulation: controlling the communication between the surface water input unit and the river simulation unit and the communication between the discharge unit and the river simulation unit, and obtaining the aeration zone infiltration amount and the effective back-up amount;
and (3) infiltration monitoring: the circulation monitoring unit monitors the moisture content or liquid level height in the aeration zone simulation unit and the aquifer simulation unit;
in the dynamic simulation method for replenishing groundwater by surface water, in the groundwater flow field simulation step, the simulation of groundwater environment is realized by the communication of the groundwater input unit, the aquifer simulation unit and the discharge unit, and the groundwater flow conditions are changed by changing the input of different groundwater input units, so that the simulation of various groundwater flow conditions is realized; in addition, through the infiltration simulation step, namely through the communication of the river simulation unit, the aeration zone simulation unit and the aquifer simulation unit, the surface water can be simulated to be replenished to the underground aquifer, and further the mode of artificially increasing the groundwater replenishment quantity is simulated, for example, surface water sources such as rivers, reservoir abandoned water, rain flood, treated regenerated water and the like are converted into relatively stable and sustainable groundwater resources through groundwater replenishment engineering; in the infiltration monitoring step, the water level in the aeration zone simulation unit and the aquifer simulation unit is monitored through the realization, so that the water level change of the aeration zone simulation unit and the aquifer simulation unit is monitored at any time in the recharging process intuitively, and the effective recharging amount of the surface water recharging underground water is conveniently and intuitively acquired in time.
In the dynamic simulation process, the simulation of the river runoff environment is realized through the communication of the surface water input unit, the river simulation unit and the discharge unit, and in the actual test, the simulation of various different surface runoff is realized by changing the input of different surface water input units so as to change the river runoff conditions; the simulation of the real underground anaplerosis process is further perfected, and the simulation accuracy is further improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic view of a structure of a main view of an apparatus used in the method for dynamically simulating groundwater recharging by surface water according to embodiment 1;
FIG. 2 is a schematic diagram of a side view of the apparatus used in the method for dynamically simulating groundwater recharge with surface water according to embodiment 1;
fig. 3 is a schematic structural diagram of a river simulation box in the apparatus used in the method for dynamically simulating groundwater recharge by surface water according to embodiment 1;
description of reference numerals:
11-a second input port; 12-a second water storage tank; 13-a second input pipe; 14-a second power member; 15-a second switch;
21-a first input port; 22-a first water storage tank; 231-nitrogen gas cylinder; 232-an aerator pipe; 24-a first input tube; 25-a first power member; 26-a liquid feeding pipe; 27-a first switch;
31-a first output port; 32-a second output port; 33-a waste water tank; 34-a first output pipe; 341-first shunt tube; 342-a second shunt tube; 35-a second output pipe; 36-a third output pipe; 371-third switch; 372-a fourth switch; 373-a fifth switch; 38-downstream water storage tank;
41-river simulation box body; 411-a backplane; 412-ladder panel; 413-end plate; 42-a first weep hole;
51-a first envelope simulation box; 52-a second gas-containing belt simulation box body; 53-first mounting hole;
61-aquifer simulation tank; 62-a second mounting hole;
71-a water level monitor; 72-a first flow monitoring member; 73-a second flow monitoring member; 74-a third flow monitoring member; 75-a fourth flow monitoring element;
81-a first water quality monitoring probe; 82-a second water quality monitoring probe; 83-terminal device;
91-a first connector; 92-a second connector; 93-a third connection;
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Example 1
The present embodiment provides a dynamic simulation apparatus for replenishing groundwater with surface water, as shown in fig. 1 to 3, including: the device comprises a surface water input unit, a ground water input unit, a discharge unit, a river simulation unit, an aeration zone simulation unit, an aquifer simulation unit and a circulation monitoring unit. Wherein, the river simulation unit is respectively communicated with the surface water input unit and the discharge unit; the aquifer simulation unit is communicated with the underground water input unit; the river simulation unit, the aeration zone simulation unit and the aquifer simulation unit are sequentially arranged downwards along the vertical direction. The circulation monitoring unit includes a plurality of water level monitoring pieces 71, and water level monitoring piece is installed in aeration zone analog unit and aquifer analog unit for one end in this embodiment, and the other end stretches out aeration zone analog unit and aquifer analog unit's piezometer pipe. The surface water input unit is used for inputting a liquid medium for simulating surface water into the river simulation unit, for example, tap water is used in the embodiment, and other water resources such as river water or lake water can be used for sufficiently simulating the use environment.
In the dynamic simulation apparatus for replenishing groundwater with surface water according to this embodiment, as shown in fig. 1, the groundwater input unit includes: a first water storage tank 22, an aeration structure, a first input pipe 24, and a first power member 25 and a first switch 27 provided on the first input pipe 24.
Wherein the first water storage tank 22 is communicated with the aquifer simulation unit through a first input pipe 24; the liquid adding pipe 26 is communicated with the first water storage tank 22 and is used for adding groundwater simulation liquid with specified water quality; the aeration structure is in communication with the first storage tank 22 for removing oxygen from the first storage tank 22. Specifically, the aeration structure is a nitrogen cylinder 231 and an aeration pipe 232 which are connected. Wherein, first storage water tank 22 is connected for the other end that nitrogen cylinder 231 is connected to aeration pipe 232, and stretch into in the solution that first storage water tank 22 held, because nitrogen gas is inert gas, and can not react with solution in the first storage water tank 22, and dispel oxygen through the solution aeration of nitrogen gas in to first storage water tank 22, thereby realize getting rid of the oxygen of medium in the first storage water tank 22, guarantee the anaerobic environment of simulation groundwater, of course, can control the letting in of aeration structure according to the in-service use demand, in order to realize the groundwater of the different dissolved oxygen characteristics of simulation. The first switch 27 controls the connection or disconnection of the underground input unit to the aquifer simulation unit. The first power member 25 is a peristaltic pump in this embodiment, but in alternative embodiments, the first power member 25 may have other pump body structures. The first switch 27 is a shutoff valve.
As shown in fig. 1, the surface water input unit includes: the system comprises a second water storage tank 12, a second input pipe 13, a second power part 14 and a second switch 15, wherein the second water storage tank 12 stores surface water simulation solution, the second water storage tank 12 is communicated with a communication port of a river simulation unit through the second input pipe 13, the second power part 14 is used for driving the surface water simulation solution to be conveyed to the river simulation unit by the surface water input unit, and the second switch 15 is used for controlling the connection or disconnection of the surface water input unit and the river simulation unit. The second power member 14 is a peristaltic pump in this embodiment, but the second power member 14 may have other pump body structures in alternative embodiments. The second switch is a stop valve.
The discharge unit comprises a waste water tank 33, a first output pipe 34, a third switch 371, a fourth switch 372, a fifth switch 373, a third output pipe 36, a downstream water storage tank 38 and a second output pipe 35. Wherein, one end of the first output pipe 34 is communicated with the second output port 32 of the river simulation unit, the other end of the first output pipe 34 is communicated with the waste water tank 33, and the two ends of the second output pipe 35 are respectively connected with the downstream water storage tank 38 and the waste water tank 33; the third output pipe 36 communicates at both ends with a downstream water storage tank 38 and an aquifer simulation unit. Further, a fifth switch 373 is provided on the third output pipe 36.
In this embodiment, as shown in fig. 2, the first output pipe 34 further includes a first shunt pipe 341 and a second shunt pipe 342; the first shunt pipe 341 is higher than the second shunt pipe 342; the first shunt pipe 341 is further provided with a third switch 371, the second shunt pipe 342 is provided with a fourth switch 372, and the opening and closing of the third switch 371 and the fourth switch 372 are switched, so that the river simulation unit is switched to be communicated with the wastewater tank 33 through different communication paths, and different hydraulic gradients and flows of upstream and downstream of a simulated river are realized by changing the output height position.
The aeration zone simulation unit comprises two aeration zone simulation boxes: the first gas-containing band simulation box body and the second gas-containing band simulation box body; the bottom of the aeration zone simulation box body is provided with a plurality of water seepage holes which are arranged in the communication direction of the river simulation unit, the aeration zone simulation unit and the aquifer simulation unit and are used for communicating adjacent box bodies. The river simulation unit that this embodiment provided includes: a river simulation tank 41, a second input port 11 and a second output port 32. Wherein, the river simulation box body 41 is filled with sediments simulating the river bed, such as river bed media filled with sand and pebbles; the cross section of the side surface of the river simulation box body 41 is trapezoidal, the material is a stainless steel groove body structure, the top of the river simulation box body 41 is not provided with an upper cover, two ends of a long shaft of the river simulation box body 41 are respectively connected with the second input pipe 13 through the second input port 11, and are connected with the first output pipe 34 through the second output port 32. To ensure a steady flow direction, the second inlet 11 is typically at a higher elevation than the second outlet 32.
Specifically, as shown in fig. 3, the river simulation box 41 is provided with two ladder panels 412 inclined with respect to the bottom plate 411, and end plates 413 perpendicular to the bottom plate 411, specifically, the ladder panels 412 are inclined with respect to the bottom plate 411, so that the river simulation box 41 is a ladder-shaped cavity, the bottom plate 411 is a short side of a cross section of the ladder-shaped cavity, the bottom of the bottom plate 411 is connected with the top of the first aeration zone simulation box 51, and different river bed structures are simulated by the difference of the inclination degree of the ladder panels 412 in the ladder-shaped cavity. In addition, in other alternative embodiments, the bottom plate 411 is also arranged obliquely to the horizontal plane, for example, the bottom plate 411 is inclined downward at an angle of 5 degrees to the horizontal direction, and of course in other alternative embodiments, the bottom plate 411 is inclined downward at an angle of 1-10 degrees to the horizontal direction, so as to simulate the hydraulic gradient of different rivers.
In addition, the ladder panel 412 and the bottom plate 411 are both provided with first water seepage holes 42, the diameter of each first water seepage hole 42 is 1mm, and certainly, a circular through hole with the diameter of 1mm-3mm can be selected, and the first water seepage holes 42 are distributed and punched by adopting a random dispersion method.
As shown in fig. 1 and 2, the aeration zone simulation unit includes two first aeration zone simulation boxes 51 and second aeration zone simulation boxes 52 which are sequentially stacked in the vertical direction; any one of the aeration zone simulation box bodies is made of stainless steel, the thickness of the box body is 120mm, the length of the box body is 800mm, the width of the box body is 500mm, and the height of the box body is 150 mm. The aeration zone simulation box body is a box body without a top cover, and aeration zone media such as silt, fine sand and the like are filled in the box body; the bottom of the box body is provided with a plurality of second water seepage holes, the diameter of each second water seepage hole is 1mm, and of course, a circular through hole of 1mm-3mm can be selected for use so as to ensure the communication between the two aeration zone simulation box bodies and the communication between the second aeration zone simulation box bodies and the water-bearing layer simulation unit arranged below the second aeration zone simulation box bodies. A plurality of first mounting holes 53 are formed in the side wall surface of the long axis of the second gas-wrapping tape simulation box body 52 in advance, and the first mounting holes 53 are used for leading out pressure measuring tubes from the inside of the second gas-wrapping tape simulation box body.
12-24 pressure measuring tubes can be arranged on the side walls of the second gas-wrapping band simulation box body 52 on the two sides outside the long axis, for example, the present embodiment is provided with two layers, and each layer is provided with six pressure measuring tubes, so that the side wall surface of the box body is provided with 12 hole sites of the first mounting holes 53 in total for leading out the leading-out ends of the 12 pressure measuring tubes.
In other optional embodiments, one aeration zone simulation box body may be adopted, or three, four, five or more aeration zone simulation box bodies may be adopted according to use requirements, as long as it is ensured that the aeration zone simulation box bodies are arranged between the river simulation unit and the aquifer simulation unit, and the more the aeration zone simulation box bodies are arranged, the more geological environments with thicker aeration zones and changed soil lithology can be simulated. In this embodiment, of course, the water level monitoring member 71 may be further disposed in the first aeration zone simulation tank 51, so as to further visually observe the underground refilling infiltration situation in the aeration zones of different layer structures.
In the dynamic simulation apparatus for replenishing groundwater with surface water in this embodiment, the aquifer simulation unit includes: an aquifer simulation tank 61, a first inlet 21 and a first outlet 31. Wherein the first input port 21 is communicated with the first input pipe 24 of the groundwater input unit, and the third output pipe 36 is communicated with the first output port 31; the aquifer simulation tank 61 is filled with aquifer media such as fine sand and medium sand. The aquifer simulation box body 61 is made of stainless steel, the thickness is 120mm, the length of the box body is 800mm, the width is 500mm, and the height is 150 mm. In order to ensure stable groundwater flow, the height of the first input port 21 is generally higher than the height of the first output port 31.
In this embodiment, a plurality of second mounting holes 62 are provided in advance in the major-axis side wall surface of the aquifer simulation tank 61, and the second mounting holes 62 are used to lead out the water level monitoring member 71 from the aquifer simulation tank.
In the present embodiment, a plurality of pressure measuring tubes are arranged on both side walls outside the long axis of the second aeration zone simulation tank 52, and similarly, a plurality of pressure measuring tubes are provided in the aquifer simulation tank 61. For example, in the present embodiment, the water level monitoring members 71 are distributed in the vertical direction and distributed in the horizontal direction. Specifically, 3x3x2 first mounting holes 53 are provided, and 18 piezometric tubes are led out through the hole sites of the first mounting holes 53. Similarly, 3x3x2 second mounting holes 62 are provided, and 18 pressure measuring tubes in the box body are led out through the hole positions of the second mounting holes 62. In this embodiment, six pressure-measuring pipes on the same height set up respectively and are being 50mm, 250mm and 450 mm's position apart from the distance of water inlet side end face, distribute for 50mm and 100 mm's position apart from the bottom plate of place box, and arbitrary pressure-measuring pipe has scale and valve, and after water level monitoring, can open the valve sample and carry out water quality analysis, improves the intuitiveness of measurement.
Of course, in optional implementation, the number of the piezometer tubes can be changed according to actual requirements, for example, each box body is provided with one layer, and each layer is 3x3, when a plurality of aeration zone simulation box bodies are provided, the monitoring of the water level of the aeration zone and the water-bearing layer in three dimensions can be realized through requirements, of course, each layer can also be provided with 2x2, 2x4, 3x3, 4x3 and the like, so as to realize the specific monitoring requirements as the standard. The more the number is set, the more the change of the water level and the water quality which can be monitored is fine, and the more fine the description of the migration rule of the water in the infiltration process is.
In this embodiment, the circulation monitoring unit further includes: the soil moisture sensor, the soil moisture sensor sets up aeration zone analog unit with in the aquifer analog unit, be used for the monitoring aeration zone analog unit with aquifer analog unit moisture content. Specifically, the soil moisture sensor is used for monitoring the moisture content of the medium in the aeration zone simulation unit and the aquifer simulation unit when the water saturation state is not reached. And when soil moisture monitoring unit reached the saturated water state, the moisture content change of position could not be monitored to the soil moisture sensor, and at this moment, then through the liquid level altitude variation of foretell pressure-measuring pipe, the realization was monitored the infiltration condition in the aeration zone analog unit or the aquifer analog unit of pressure-measuring pipe position.
The number of setting up of soil moisture sensor can change according to actual demand, all be equipped with the one deck in every box, and every layer is 3x3, when being equipped with a plurality of aeration zone simulation boxes, also can realize carrying out moisture content's control to aeration zone and aquifer two in three dimensions through the demand, of course, every layer also can set up 2x2, 2x4, 3x3, 4x3 etc. to it can to realize that concrete monitoring demand is the standard. The more the number is set, the more the change of the moisture content at each position can be monitored, and the more the accurate the description of the migration rule of the moisture in the infiltration process.
In this embodiment, the circulation monitoring unit further includes: a first flow monitor 72, a second flow monitor 73, a third flow monitor 74, and a fourth flow monitor 75. Wherein, the first flow monitoring part 72 is connected with the first input port 21 of the aquifer simulation unit connected with the aquifer simulation unit for monitoring the flow of the groundwater input; the second flow monitoring part 73 is connected with the first output port 31 of the aquifer simulation unit connected with the aquifer simulation unit, and is used for monitoring the flow of the groundwater output. The third flow monitoring member 74 is connected to the second input port 11 of the river simulation unit connected river simulation unit for monitoring the flow of surface water input; the fourth flow monitoring member 75 is connected to the second outlet 32 of the river simulation unit connected to the discharge unit for monitoring the flow of the surface water output. Any one of the flow monitoring pieces is a rotor flow meter and can be used for monitoring the flow of water flowing through the pipeline.
In the dynamic simulation device for replenishing groundwater to surface water in the embodiment, the input and output flows of groundwater are monitored through the first flow monitoring part 72 and the second flow monitoring part 73, so that whether the groundwater is in a stable runoff environment or not is determined, and the accuracy of an experiment is ensured. In addition, the setting of second flow monitoring piece 73, in the groundwater in-process that has the surface water to mend again, can implement the monitoring to groundwater flow change, through the difference of second flow monitoring piece 73 flow around surface water input unit intercommunication, can be in order to obtain the actual water yield of giving groundwater of meneing behind the aeration zone analog unit of surface water, further improve the intuitiveness and the convenience of monitoring. The third flow monitoring piece 74 and the fourth flow monitoring piece 75 monitor the input and output of surface water, so that when the third flow monitoring piece and the fourth flow monitoring piece are stable, stable river runoff environment can be visually monitored and obtained, the accuracy of an experiment is guaranteed, and in addition, the infiltration amount of river water infiltrating into an aeration zone can be obtained through the difference value of the flow values of the third flow monitoring piece 74 and the fourth flow monitoring piece 75.
The dynamic simulation apparatus for surface water recharging underground water in this embodiment further includes a water quality monitoring unit, a first water quality monitoring probe 81, a second water quality monitoring probe 82, a first recharging monitoring probe and a second recharging monitoring probe. The first back-supplementing monitoring probe is connected with the aeration zone simulation unit and is used for monitoring the water quality in the aeration zone simulation unit; the second back-supplementing monitoring probe is connected with the aquifer simulation unit and used for monitoring the water quality in the aquifer simulation unit. The first water quality monitoring probe 81 is communicated with the underground water input unit and is used for monitoring the water quality of the underground water input unit; the second water quality monitoring probe 82 is communicated with the surface water input unit and is used for monitoring the water quality of the surface water input unit; in this embodiment, the first back-up monitoring probe is communicated with an output end of the pressure measuring tube connected to the aeration zone simulation unit, for example, the first back-up monitoring probe is communicated with a solution in the pressure measuring tube through a switch valve on the pressure measuring tube. Similarly, the second replenishment monitoring probe is in communication with a pressure measuring tube connected to the aquifer simulation unit, for example, the communication with the solution in the pressure measuring tube may also be achieved by a switch valve on the pressure measuring tube.
Specifically, the first water quality monitoring probe 81 and the second water quality monitoring probe 82 are both water quality on-line monitors, and any one of the water quality monitoring probes and the back-up monitoring probe can monitor multiple parameters of pH, dissolved oxygen, conductivity and oxidation-reduction potential on line. Of course, the back-compensation monitoring probe is communicated with the output end of the piezometer tube, so that the water quality in the piezometer tube is monitored and analyzed, and the monitoring convenience is further ensured.
The surface water replenishing groundwater dynamic simulation device provided by the invention can realize water quality environment monitoring when surface water in the aeration zone simulation unit and the aquifer simulation unit is replenished with groundwater through the arrangement of the water quality monitoring unit and the arrangement of the first replenishing monitoring probe and the second replenishing monitoring probe, thereby realizing understanding of water quality change conditions of groundwater at different spatial positions.
The water quality monitoring unit further comprises a plurality of soil monitoring pieces, and the soil monitoring pieces are installed in the aeration zone simulation unit and in the aquifer simulation unit and used for monitoring the aeration zone simulation unit and the parameters of the unsaturated water soil in the aquifer simulation unit. In particular, a pH sensor, a dissolved oxygen sensor, a conductivity sensor, an oxidation-reduction potential sensor and the like are integrated in the soil monitoring piece, so that a plurality of parameters of pH, dissolved oxygen, conductivity, oxidation-reduction potential and the like related to water quality in soil can be monitored on line.
In this embodiment, the number of the soil monitoring elements can be changed according to actual requirements, for example, each box body is provided with one layer, and each layer is 3x3, when a plurality of aeration zone simulation box bodies are provided, monitoring of multiple parameters such as pH, dissolved oxygen, conductivity, oxidation-reduction potential and the like of the aeration zone and the aquifer in three dimensions can be realized through requirements, of course, each layer can also be provided with 2x2, 2x4, 3x3, 4x3 and the like, and the concrete monitoring requirements can be realized as standards. The more the number is set, the more finely the change of parameters such as pH, dissolved oxygen, conductivity, oxidation-reduction potential, etc. at each position can be monitored.
In the embodiment, the soil monitoring part and the soil moisture sensor are integrated into the soil multi-parameter monitoring probe together, so that multi-parameter changes such as moisture content, pH, dissolved oxygen, conductivity, oxidation-reduction potential and the like mounted at the mounting position can be monitored simultaneously, and the integration level is improved.
Therefore, the first water quality monitoring probe 81 can monitor the water quality condition actually input into the aquifer simulation unit for simulating the groundwater; correspondingly, the water quality condition of the surface water actually input into the river simulation unit for simulation is monitored through the arrangement of the second water quality monitoring probe 82; therefore, through the arrangement of the first water quality monitoring probe 81 and the second water quality monitoring probe 82, the water quality condition under the initial condition of supplying water in the groundwater recharging process of surface water in the experimental environment is obtained, the experimental error is further reduced, the test precision is improved, and the precision of the simulation experimental environment is improved.
Further, a first connecting member 91 is provided between the river simulation box body 41 and the first aeration zone simulation box body 51; a second connecting piece 92 is arranged between the first wrapping band simulation box body 51 and the second wrapping band simulation box body 52; a third connecting piece 93 is arranged between the second wrapping gas belt simulation box body 52 and the water-containing simulation box body. Any connecting piece is of a structure that the padlock and the screw are fastened with each other, and the connecting piece is filled with high-elasticity waterproof rubber capable of expanding when meeting water, so that the water leakage after the box bodies on different layers are connected and fixed is guaranteed. Particularly, be equipped with four connecting pieces between the adjacent box, arbitrary connecting piece all sets up the four corners department at the box, for example, the bottom welding of the box that sets up on has four locks, and the top welding of the box that sets up under has four locks, fastens the padlock of corresponding setting each other through the screw to it can to pack water proof rubber in the lock.
The surface water recharge underground water dynamic simulation device with the structure is provided with the box body for river simulation, aeration zone simulation and aquifer simulation through split installation, and different media are filled in different box body structures, so that the complicated aeration zone and aquifer stratum structures can be simulated, and the experiment can be conveniently carried out on different layer media by replacing and repeatedly carrying out experiments. When the simulation of adopting single box to realize multilayer geological structure is avoided, need load the simulation medium in proper order, and cause to load and accomplish the back, experimental box advances to carry out single geological structure test, and can't carry out a lot of experiments to different, complicated geological structure, causes the problem that the experiment degree of difficulty is big, with high costs, test accuracy is low.
The dynamic simulation device for replenishing the groundwater by the surface water realizes the simulation of the river runoff environment through the communication of the surface water input unit, the river simulation unit and the discharge unit, and can realize the simulation of various different surface runoff by changing the input of different surface water input units to change the river runoff conditions during the actual test;
the simulation of the groundwater environment is realized through the communication of the groundwater input unit, the aquifer simulation unit and the discharge unit, and during an actual simulation test, the groundwater flow conditions are changed by changing the input of different groundwater input units, so that the simulation of various groundwater flow conditions is realized;
through the communication of the river simulation unit, the aeration zone simulation unit and the aquifer simulation unit, the surface water can be simulated to be replenished to the underground aquifer, and further a mode of artificially increasing the groundwater replenishment quantity is simulated, for example, a surface water source such as a river, reservoir abandoned water, rain flood, treated reclaimed water and the like is converted into a relatively stable and sustainable groundwater resource through an underground water replenishing project;
through the setting of water quality monitoring unit and circulation monitoring unit, realize realizing the monitoring to water level and quality of water in aeration zone analog unit, the aquifer analog unit to monitor aeration zone analog unit and aquifer analog unit's water level and quality of water change at any time directly perceivedly at the anaplement in-process, thereby be convenient for in time and directly perceivedly acquire effective anaplement volume and the quality of water change of surface water anaplement groundwater.
Example 2
The embodiment provides a dynamic simulation method for replenishing groundwater with surface water, which adopts the dynamic simulation device for replenishing groundwater with surface water in the embodiment 1, and comprises the following steps:
s1: equipment assembling: connecting a surface water input unit, a ground water input unit, a discharge unit, a circulation monitoring unit, a river simulation unit, an aeration zone simulation unit, an aquifer simulation unit and a water quality monitoring unit;
s111: installation of water level monitor 71: installing a water level monitoring piece 71, namely a pressure measuring pipe in a second aeration zone simulation box body 52 of an aeration zone simulation unit and an aquifer simulation box body 61 of the aquifer simulation unit, specifically, installing two layers of pressure measuring pipes in each of the second aeration zone simulation box body 52 and the aquifer simulation box body 61 along the vertical direction, wherein each layer is distributed in a distribution mode of 3x 3; therefore, 36 pressure measuring tubes are buried in the second aeration zone simulation tank 52 and the aquifer simulation tank 61.
S112: and a soil multi-parameter monitoring probe is arranged at one side, which is close to each piezometer tube and is buried in the box body. Specifically, two layers of soil multi-parameter monitoring probes are arranged in each box body along the vertical direction, and each layer is distributed in a 3x3 distribution mode; the 36 soil multi-parameter monitoring probes were embedded in the second aeration zone simulation tank 52 and the aquifer simulation tank 61.
S12: filling: filling sand and pebbles into the river simulation box body 41; filling silt into the first aeration zone simulation box body, and filling fine sand into the second aeration zone simulation box body; filling fine sand into the aquifer simulation tank 61;
s13: connection of the analog unit: the river simulation box 41 of the river simulation unit, the first aeration zone simulation box 51 of the aeration zone simulation unit, the second aeration zone simulation box 52 of the aeration zone simulation unit and the aquifer simulation box 61 of the aquifer simulation unit are connected in sequence. Particularly, the four buckles are locked through screws between two adjacent boxes in the vertical direction, and water-tight connection and fixation of the boxes on different layers is guaranteed through filling of high-elasticity water-proof rubber capable of expanding when meeting water.
S141: installation of underground water input unit: the first water storage tank 22 is communicated with the first input port 21 through a first input pipe 24; the first storage tank 22 is in communication with the aeration structure; a first power element 25 and a first switch 27 are arranged on the first input pipe 24;
s142: installation of the surface water input unit: the second water storage tank 12 of the surface water input unit is communicated with the first input port 21 through a second input pipe 13; a second power part 14 and a second switch 15 are arranged on the second input pipe 13;
s143: mounting of the discharge unit: the waste water tank 33 is communicated with the first output port 31 through a first output pipe 34; the waste tank 33 communicates with the second outlet 32 via the second outlet pipe 35, a downstream storage tank 38 and a third outlet pipe 36. The third switch 371 and the fourth switch 372 are mounted on the second output pipe 35, and the fifth switch 373 is mounted on the third output pipe 36.
S151: assembly of groundwater flow monitoring: the first flow monitoring member 72 of the circulation monitoring unit is communicated with the first input port 21 of the groundwater input unit; for example: the first input pipe 24 is provided with the first flow monitoring member 72. A second flow monitor 73 in the circulation monitoring unit communicates with the first output port 31 of the aquifer simulation unit. For example: a second flow monitoring part 73 is arranged on the first output pipe 34;
s152: assembling surface water flow monitoring: the third flow monitoring member 74 of the flow-through monitoring unit is in communication with the second input port 11 of the river simulation unit; the fourth flow monitoring member 75 of the circulation monitoring unit is in communication with the second outlet 32 of the river simulation unit. For example: the third flow monitoring part 74 is mounted on the second input pipe 13; the fourth flow rate monitor 75 is mounted on the second output pipe 35.
S16: installation of a water quality monitoring unit: the back-compensation monitoring probe is communicated with an output pipeline of the pressure measuring pipe; the first water quality monitoring probe 81 is connected with the first water storage tank 22; the second water quality monitoring probe 82 is connected with the second water storage tank 12.
The above steps S11-S16 can be exchanged according to the requirement when the actual use is satisfied.
S2: simulating the groundwater flow field: controlling the communication between the underground water input unit and the aquifer simulation unit and the communication between the discharge unit and the aquifer simulation unit to obtain a stable underground flow field;
s21: adding a solution for simulating underground water components into the first water storage tank 22 through a liquid adding pipe 26, and aerating nitrogen into the first water storage tank 22 through an aeration pipe 232 connected with a nitrogen bottle 231 to drive oxygen until the dissolved oxygen is lower than 1mg/L, so as to simulate the underground water with certain water quality characteristics; the terminal device 83 reads the test data of the first water quality monitoring probe 81 pre-arranged in the first water storage tank 22 to obtain the groundwater quality.
Specifically, water is added to the first water tank 22, and water is supplied to the aquifer simulation tank 61 through the first input pipe 24 by opening the first switch 27; and the third switch 371 is opened, thereby controlling the communication of the groundwater input unit with the aquifer simulation unit and the communication of the discharge unit with the aquifer simulation unit;
s22: the water level is controlled by the second output pipe 35 in the downstream storage tank, the underground flow field is simulated by ensuring the liquid level difference between the downstream storage tank 38 and the first storage tank 22, when the readings of the first flow monitoring part 72 and the second flow monitoring part 73, namely the rotameter, are stable, and the first input flow Q of the first flow monitoring part 72 at the moment is recordedr1And a first output flow rate Q of the second flow rate monitoring member 73c1. When the water outflow of the second output pipe 35 is stable, the reserve of groundwater in the aquifer under the initial condition is obtained, and Q is obtainedr1＝Qc1。
S23: since the height position of the first inlet 21 is between two pressure measuring pipes of the aquifer simulation tank, only the water level scale of the pressure measuring pipe distributed on the bottom layer is read at the moment: hh01…Hh0n…Hh09. Except for the pressure measuring pipe at the bottom layer, the pressure measuring pipes cannot display liquid level readings because the simulation units where other pressure measuring pipes are located are not in a water saturation state, and the moisture content can be monitored only by a soil multi-parameter monitoring probe which is arranged in the pressure measuring pipes and contains a soil moisture sensor. For example, the water-bearing layer simulation box is arranged at the timeThe water content in each soil multi-parameter monitoring probe above the ground water level is Wh01…Wh0n…Wh09. Similarly, at this point, the moisture content value W in each soil multi-parameter monitoring probe in the second aeration zone simulation tankb01…Wb0n…Wb018。
S3: infiltration simulation: and controlling the communication between the surface water input unit and the river simulation unit and the communication between the discharge unit and the river simulation unit, and obtaining the aeration entrainment infiltration amount through the flow difference between the second input flow of the second input port 11 and the second output flow measured by the second output port 32. And obtaining the effective groundwater recharging amount through the change value of the first output port before and after the step S3. In addition, the second water quality monitoring probe 82 monitors the water quality in the second water storage tank 12; and the back-supplementing monitoring probe monitors the water quality change in the aeration zone simulation unit and the aquifer simulation unit.
S31: and opening the second input pipe 13, the second switch 15 and the second water outlet pipe, controlling the water inflow flowing to the river simulation box body 41 through the second power part 14, and reading the test data of a second water quality monitoring probe 82 pre-arranged in the second water storage tank 12 through the terminal equipment 83 to obtain the surface water quality.
S32: by turning on the third switch 371 or the fourth switch 372, different output height positions are simulated, and different hydraulic gradients and flow rates upstream and downstream of the river are further simulated. At this time, the following are recorded in sequence: when the third switch 371 is turned on and the fourth switch 372 is turned off, the second input flow Q of the third flow monitor 74r2And a second output flow Q of the fourth flow monitoring element 75c2(ii) a When the third switch is closed and the fourth switch is opened, the third input flow Q of the third flow monitoring partr3And a third output flow Q of a fourth flow monitoring elementc3(ii) a In this embodiment, a sample with the third switch turned on and the fourth switch turned off is taken as an example, and the air-included zone penetration amount is Q at this timeB1＝QC2-Qr2(ii) a Taking the sample with the third switch turned off and the fourth switch turned on as an example, the air-entrapping infiltration amount Q can be obtainedB2＝QC3-Qr3；
S33: when the third switch is closed and the fourth switch is opened, and the groundwater overflow is stable, reading the indication of the second flow monitoring part 73, namely the rotameter, as the fourth output flow Qc4(ii) a And through a first output flow Qc1And a fourth output flow Qc4Obtaining the effective groundwater recharge quantity Q at the momenthb1＝Qc4-Qc1。
When the fourth switch is closed and the third switch is opened, and the groundwater overflow is stable, the reading of the second flow monitoring part 73, namely the indication of the rotameter, is the fifth output flow Qc5(ii) a And through a first output flow Qc1And a fifth output flow Qc5Obtaining the effective groundwater recharge quantity Q at the momenthb2＝Qc5-Qc1。
Monitoring and recording the water quality parameters of the soil monitoring part before and after groundwater recharge, sampling the output end of the piezometer tube after groundwater recharge, and monitoring and recording the water quality parameters through the recharge monitoring probe. Thereby acquiring the water quality change in the aquifer simulation unit and the aeration zone simulation unit. For example, parameters such as pH, oxidation reduction, temperature, conductivity and the like are monitored through a soil monitoring piece and a back-up monitoring probe, so that water quality changes of different layers are obtained.
S4: and (3) infiltration monitoring: the circulation monitoring unit monitors the moisture content or liquid level height in the aeration zone simulation unit and the aquifer simulation unit;
in the process of S3, the measurement is performed at intervals of a certain time, such as thirty minutes, and the intervals of the measurement may be adjusted according to the use requirement, such as twenty minutes, forty minutes, or one hour, to monitor the liquid level height or the moisture content in the aeration zone simulation unit and the aquifer simulation unit, so as to obtain the variation of the water level or the moisture content of different formation mediums at different refilling stages.
At thirty minutes, the second aeration zone simulation tank is still in an unsaturated water state, but is in an aquifer simulation unitTwo layers of pressure measuring pipes arranged in the aquifer simulation box body along the vertical direction are in a water saturation state, and at the moment, the water content value W in each soil multi-parameter monitoring probe in the second aeration zone simulation box bodyb11…Wb1n…Wb118. Similarly, the water level scale of each pressure measuring pipe provided in the aquifer simulation tank at this time is read to be Hh11、…Hh1n…Hh118。
In sixty minutes, the soil layer where the bottom piezometer tube of the second aeration zone simulation box body is located and the aquifer simulation box body are both in a water saturation state, but the soil layer where the top piezometer tube of the second aeration zone simulation box body is located is in an unsaturated state, and at the moment, the water content value W in the soil multi-parameter probe of the top layer in the second aeration zone simulation box bodyb21…Wb2n…Wb29. The water level scale of the bottom piezometer tube of the second aeration zone simulation box body is Hb21、Hb22…Hb2n…Hb29. Similarly, the water level scale of each pressure measuring pipe provided in the aquifer simulation tank at this time is read to be Hh21、Hh22…Hh2n…Hh218And so on.
At the ninety-fifth minute, the second aeration zone simulation box body and the aquifer simulation box body are in a water-saturated state, and the water level scale of each piezometer tube in the aeration zone simulation box body is read to be Hb31、Hb32…Hb3n…Hb318. Similarly, the water level scale of each pressure measuring pipe provided in the aquifer simulation tank at this time is read to be Hh31、Hh32…Hh3n…Hh318And so on. Therefore, the water change rule of the unsaturated aeration zone different burial depth soil and the change rule of the saturated groundwater level can be obtained through the difference value of the scales of the front and the back piezometers or the difference value of the water content monitored by the front and the back soil multi-parameter monitoring probes.
In the experiment process, different river flow rates and river water flow conditions can be controlled by adjusting the second switch 15, the third switch 371 and the fourth switch 372 on the second input pipe 13 and the second output pipe 35, and the water change rules of unsaturated aeration zone different burial soil and saturated groundwater level can be monitored under different stratum lithology conditions and different groundwater level conditions by changing the filling conditions of media in the river simulation box 41, the first aeration zone simulation box 51, the second aeration zone simulation box 52 and the aquifer simulation box 61.
The dynamic simulation method for replenishing the surface water to the underground water layer provided by the invention realizes the process of simulating the surface water to be replenished to the underground water-bearing layer through the underground water flow field simulation step, thereby simulating the mode of artificially increasing the underground water replenishing amount, such as converting surface water sources, such as rivers, reservoir abandoned water, rain flood, treated regenerated water and the like, into relatively stable and sustainable underground water resources through underground water replenishing engineering. Therefore, stable underground liquid flow is obtained by simulating the communication between the underground water input unit and the aquifer simulation unit and the communication between the discharge unit and the aquifer simulation unit, so that the simulation situation of groundwater recharge in the dynamic flowing process of a river is simulated, and the influence of the recharge process on the aeration zone infiltration experiment is increased and considered.
In the groundwater flow field simulation step, the simulation of the groundwater environment is realized through the communication of the groundwater input unit, the aquifer simulation unit and the discharge unit, and the groundwater flow conditions are changed by changing the input of different groundwater input units, so that the simulation of various groundwater flow conditions is realized; in addition, through the infiltration simulation step, namely through the communication of the river simulation unit, the aeration zone simulation unit and the aquifer simulation unit, the surface water can be simulated to be replenished to the underground aquifer, and further the mode of artificially increasing the groundwater replenishment quantity is simulated, for example, surface water sources such as rivers, reservoir abandoned water, rain flood, treated regenerated water and the like are converted into relatively stable and sustainable groundwater resources through groundwater replenishment engineering; in the infiltration monitoring step, the water level in the aeration zone simulation unit and the aquifer simulation unit is monitored through the realization, so that the water level change of the aeration zone simulation unit and the aquifer simulation unit is monitored at any time in the recharging process intuitively, and the effective recharging amount of the surface water recharging underground water is conveniently and intuitively acquired in time.
In the dynamic simulation process, the simulation of the river runoff environment is realized through the communication of the surface water input unit, the river simulation unit and the discharge unit, and in the actual test, the simulation of various different surface runoff is realized by changing the input of different surface water input units so as to change the river runoff conditions; the simulation of the real underground anaplerosis process is further perfected, and the simulation accuracy is further improved.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (8)
1. A dynamic simulation method for replenishing groundwater by surface water is characterized by comprising the following steps:
equipment assembling: connect surface water input unit, groundwater input unit, discharge unit, circulation monitoring unit, river analog unit, aeration zone analog unit and aquifer analog unit, wherein, equipment assembly step includes the equipment of surface water flow monitoring, the equipment of surface water flow monitoring includes: a third flow monitoring member (74) of the circulation monitoring unit is communicated with a second input port (11) of the river simulation unit, a fourth flow monitoring member (75) of the circulation monitoring unit is communicated with a second output port (32) of the river simulation unit, and a second flow monitoring member (73) of the circulation monitoring unit is communicated with a first output port (31) of the aquifer simulation unit;
simulating the groundwater flow field: controlling the communication between the underground water input unit and the aquifer simulation unit and the communication between the discharge unit and the aquifer simulation unit to obtain a stable underground flow field;
infiltration simulation: controlling the communication between the surface water input unit and the river simulation unit and the communication between the discharge unit and the river simulation unit, and obtaining the aeration zone infiltration amount and the effective back-up amount; wherein the entrapped gas infiltration amount is obtained by a flow difference between an input flow of the second input port (11) measured by a third flow monitoring element (74) and an output flow of the fourth flow monitoring element (75) measured at the second output port (32), and the effective back-up amount is obtained by an output flow difference of the first output port (31) measured by a second flow monitoring element (73) before and after the infiltration simulation step;
and (3) infiltration monitoring: the circulation monitoring unit monitors the moisture content or liquid level height in the aeration zone simulation unit and the aquifer simulation unit.
2. A method for dynamic simulation of surface water recharging groundwater according to claim 1,
the device assembling step further comprises: the water level monitoring piece is communicated with the aeration zone simulation unit and the aquifer simulation unit; the infiltration monitoring step further comprises: monitoring the liquid level heights of the aeration zone simulation unit and the aquifer simulation unit through the water level monitoring piece; and/or
The device assembling step includes: the soil moisture sensor is arranged in the aeration zone simulation unit and the aquifer simulation unit; the infiltration monitoring step comprises: and monitoring the moisture content in the aeration zone simulation unit and the aquifer simulation unit through the soil moisture sensor.
3. A method for dynamically simulating groundwater recharge of a surface water according to claim 2, wherein the apparatus assembling step further comprises:
assembly of groundwater flow monitoring: a first flow monitoring member (72) of the circulation monitoring unit is in communication with a first input port (21) of the aquifer simulation unit.
4. A method for dynamically simulating groundwater recharge of a surface water according to claim 3, wherein the apparatus assembling step further comprises:
installation of underground water input unit: the first water storage tank (22) is communicated with the first input port (21) through a first input pipe (24); the first water storage tank (22) is communicated with the aeration structure; said first input pipe (24) having said first flow monitoring member (72) mounted thereon;
installation of the surface water input unit: a second water storage tank (12) of the surface water input unit is communicated with a second input port (11) through a second input pipe (13); the second input pipe (13) is provided with the third flow monitoring part (74);
mounting of the discharge unit: the waste water tank (33) is communicated with the first output port (31) through a second output pipe (35); a second flow monitoring piece (73) is arranged on the second output pipe (35); the waste water tank (33) is communicated with the second output port (32) through a first output pipe (34); the fourth flow monitoring member (75) is mounted on the first output pipe (34).
5. A method for dynamic simulation of surface water replenishing groundwater according to any of claims 1-4, wherein the equipment assembling step further comprises:
installation of the circulation monitoring unit: installing circulation monitoring units in the aeration zone simulation unit and the aquifer simulation unit;
connection of the analog unit: and the river simulation unit, the aeration zone simulation unit and the aquifer simulation unit are sequentially connected.
6. A method for dynamically simulating groundwater recharge for surface water according to claim 5, wherein the step of assembling the apparatus further comprises, before the step of connecting the simulation units:
filling: and filling media into the river simulation unit, the aeration zone simulation unit and the aquifer simulation unit respectively.
7. A method for dynamic simulation of surface water recharging groundwater according to claim 4,
the device assembling step further comprises: the soil monitoring piece is arranged in the aeration zone simulation unit and the aquifer simulation unit; the back-supplementing monitoring probe is connected with an output port of the water level monitoring piece;
the infiltration simulation step further comprises: and the recharge monitoring probe and the soil monitoring part monitor the water quality change in the aeration zone simulation unit and the aquifer simulation unit.
8. A method for dynamic simulation of surface water recharging groundwater according to claim 7,
the device assembling step further comprises: the first water quality monitoring probe (81) is connected with the first water storage tank (22); the second water quality monitoring probe (82) is connected with the second water storage tank (12);
the groundwater flow field simulation further comprises: the first water quality monitoring probe (81) monitors the water quality in the first water storage tank (22);
the infiltration simulation step further comprises: the second water quality monitoring probe (82) monitors the water quality in the second water storage tank (12).
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