CN109187285A - Seepage through soil mass experimental rig - Google Patents
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- CN109187285A CN109187285A CN201811226129.9A CN201811226129A CN109187285A CN 109187285 A CN109187285 A CN 109187285A CN 201811226129 A CN201811226129 A CN 201811226129A CN 109187285 A CN109187285 A CN 109187285A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N13/00—Investigating surface or boundary effects, e.g. wetting power; Investigating diffusion effects; Analysing materials by determining surface, boundary, or diffusion effects
- G01N13/04—Investigating osmotic effects
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Abstract
The invention discloses a kind of seepage through soil mass experimental rigs, are related to geotechnical engineering monitoring special instrument technical field, are not easy the technical issues of obtaining comprehensive and accurate data to alleviate prototype measurement existing in the prior art.The seepage through soil mass experimental rig includes test bucket, water supply mechanism, collecting mechanism；Hollow out partition is provided in test bucket, test bucket has drainpipe；Water supply mechanism has water tank, the first water inlet pipe and the second water inlet pipe；Water tank can be vertically moving；One end of first water inlet pipe is connected to water tank, and the other end protrudes into the inner cavity of test bucket, and the first inlet valve is arranged on the first water inlet pipe；One end of second water inlet pipe is connected to water tank, and the other end is connected to the inner cavity of test bucket；Collecting mechanism protrudes into the inner cavity of test bucket.The seepage through soil mass experimental rig is in laboratory environments observed the soil body, few by external influence factor, can obtain that the soil body is comprehensive and accurate data.
Description
Technical field
The present invention relates to geotechnical engineerings to monitor special instrument technical field, tests and fills more particularly, to a kind of seepage through soil mass
It sets.
Background technique
Prototype method for sensing is used to the monitoring of the soil water potential of the soil body, moisture content, temperature, salinity etc. now, is passed through
To in the region to be observed, the detection device of soil water potential, moisture content, temperature, salinity etc. is buried, to related data
Carry out in real time or timing detects and acquisition.
The influence factor of prototype measurement is more, can not control the variation of rainfall intensity and level of ground water, simultaneously because
Prototype measurement requires height to instrument and equipment, and the instrument and equipment that can be used for prototype measurement is few, and prototype measurement is caused to be difficult to obtain comprehensively
And accurate data.
The information disclosed in the background technology section is intended only to deepen the understanding to general background technology of the present invention, without
It should be considered as recognizing or implying in any form that the information constitutes the prior art known in those skilled in the art.
Summary of the invention
The purpose of the present invention is to provide a kind of seepage through soil mass experimental rigs, are seen with alleviating prototype existing in the prior art
Survey is not easy the technical issues of obtaining comprehensive and accurate data.
To solve the above problems, the present invention the following technical schemes are provided:
A kind of seepage through soil mass experimental rig, including test bucket, water supply mechanism, collecting mechanism；
Hollow out partition is provided in the test bucket, the test bucket has drainpipe, and the drainpipe is located at described engrave
Between dummy receptacle and the bottom side of the test bucket, and drain valve is set on the drainpipe；
The water supply mechanism has water tank, the first water inlet pipe and the second water inlet pipe；
The water tank can be vertically moving；
One end of first water inlet pipe is connected to the water tank, and the opening of the other end from the test bucket protrudes into the examination
The inner cavity of bucket is tested, and the first inlet valve is set on first water inlet pipe；
One end of second water inlet pipe is connected to the water tank, the other end be connected to it is described test bucket side wall and with institute
The inner cavity connection for stating test bucket, between the hollow out partition and the bottom plate of the test bucket, and on second water inlet pipe
Second inlet valve is set；
The collecting mechanism protrudes into the inner cavity of the test bucket, for acquiring soil moisture content, temperature, salt content and Tu Shui
Gesture.
Further, the collecting mechanism includes first sensor component, second sensor component and data processing unit；
Multiple first sensor components are arranged at intervals at along the vertical direction in the test bucket, and with the data
Processing unit electrical connection, for acquiring soil moisture content, temperature, conductivity；
Multiple second sensor components are arranged at intervals at along the vertical direction in the test bucket, for acquiring soil soil
The flow of water.
Further, the distance between adjacent described first sensor component is equal, the adjacent second sensor component
The distance between equal, and the height one of the height of multiple first sensor components and multiple second sensor components
One is corresponding.
Further, the water supply mechanism further includes the column being vertically arranged, and the column is provided with scale；
The water tank is connect with the column, and can be slided along the column, and the water tank is provided with vertical direction
Scale.
Further, blotter is set between the hollow out partition and test bucket bottom side.
Further, the end for protruding into the test bucket of first water inlet pipe is equipped with spray head, and described first
First inlet valve is set on water inlet pipe.
Further, the seepage through soil mass experimental rig further includes two temperature-constant plates, is respectively provided in two temperature-constant plates
There is condensate circulation pipe；
Wherein a temperature-constant plate is set to the opening of the test bucket, the opening of the test bucket is blocked, Ling Yisuo
State the bottom side that temperature-constant plate is set to the test bucket.
Further, being set on the temperature-constant plate of the opening of the test bucket has exhaust pipe, described exhaust pipe one end
Protrude into the test bucket.
Further, the lateral surface of the test bucket wraps up heat insulation layer.
Further, hollow out bung is additionally provided in the test bucket, the hollow out bung is located on the hollow out partition
Side, for being covered on the upside of soil.
In conjunction with above technical scheme, bring beneficial effect of the present invention is analyzed as follows:
The present invention provides a kind of seepage through soil mass experimental rig, which includes test bucket, water supplying machine
Structure, collecting mechanism；Hollow out partition is provided in test bucket, test bucket has drainpipe, and drainpipe is located at hollow out partition and examination
It tests between the bottom side of bucket；Water supply mechanism has water tank, the first water inlet pipe and the second water inlet pipe；Water tank can be transported along the vertical direction
It is dynamic；One end of first water inlet pipe is connected to water tank, and the opening of the other end from test bucket protrudes into the inner cavity of test bucket, and the first water inlet
First inlet valve is set on pipe；One end of second water inlet pipe is connected to water tank, the other end be connected to test bucket side wall and with examination
The inner cavity connection of bucket is tested, and is located between hollow out partition and the bottom plate for testing bucket；Collecting mechanism protrudes into the inner cavity of test bucket, is used for
Acquire soil moisture content, temperature, salt content and soil water potential.
Different rainfall intensities are simulated to the soil water potential, moisture content, Temperature Distribution of the soil body using the seepage through soil mass experimental rig
The infiltration of the soil body under influence and Decline or rise of groundwater level situation with salt content, research draining and rainfall intensities different under not drainage situation
Stream, water salt Transport.It is first shut off drainpipe, the first water inlet pipe and the second water inlet pipe, soil sample is layered in filling test bucket,
And be successively compacted, keep the porosity for testing the soil sample in bucket identical as undisturbed soil.Then it adjusts tank height and height is carried out
Record opens the first water inlet pipe simulated rainfall, can simulate different rainfall intensities by adjusting the first inlet valve, work as rainfall
The water level of generation closes the first water inlet pipe after so that soil body immersion is reached saturation well beyond the test top surface banketed, the row of opening
Water pipe flows out the water in the soil body naturally.Using collecting mechanism every moisture content of 3 minutes records, continuous record 3 times contains
When water rate is identical or very close, that is, thinks that the state is the original state of rainfall infiltration, be then turned off drainpipe.To simulation
Impervious foundation opens the first water inlet pipe, adjusts the first inlet valve to simulate different rainfall intensities, acquisition is primary at intervals of two minutes
Moisture content, temperature, salt content and the soil water potential to banket at different height.To simulate pervious foundation, open the first water inlet pipe and
Drainpipe adjusts the first inlet valve to simulate different rainfall intensities, acquires every 1 minute aqueous at the different height that once bankets
Rate, temperature, salt content and soil water potential.
Reservoir filling is simulated using the seepage through soil mass experimental rig or is discharged water, underground caused by mining of groundwater or recharge etc.
Influence and Study of The Underground fluctuation in stage rate of the fluctuation in stage to the soil water potential of the soil body, moisture content, temperature and salt content are to soil
The flow of water, moisture content size, Temperature Distribution and the influence of water salt migration.It is first shut off drainpipe, the first water inlet pipe and the second water inlet
Soil sample is layered in filling test bucket, and is successively compacted by pipe, keeps the porosity for testing the soil sample in bucket identical as undisturbed soil.So
Tank height is adjusted afterwards and to highly recording, open the second water inlet pipe, when water level is well beyond the test top surface banketed,
After so that soil body immersion is reached saturation, the second water inlet pipe is closed, drainpipe is opened, flows out the water in the soil body naturally.Use acquisition
Mechanism thinks that the state is when moisture content is identical or very close every moisture content of 3 minutes records, continuous record 3 times
The original state of rainfall infiltration, is then turned off drainpipe.When simulating impervious foundation, the altitude simulation reservoir level of regulating tank
Lifting, record liquid level in tank height and water tank, open the second water inlet pipe, acquisition at intervals of two minutes is once banketed difference
Moisture content, temperature, salt content and soil water potential at height, fixed water tank location simultaneously record liquid level height in tank height and water tank
Degree adjusts the second inlet valve, controls the rate of change of water level, and the rate of change of simulated groundwater position lifting was acquired every 1 minute
Moisture content, temperature, salt content and soil water potential at the primary different height that bankets.When simulating pervious foundation, fixed water tank location is simultaneously
Liquid level in tank height and water tank is recorded, drainpipe is opened, drain valve is adjusted, simulates the infiltration of the soil body under different drainage rates
Stream process, moisture content, temperature, salt content and soil water potential at the primary different height that bankets of acquisition in 1 minute.
The seepage through soil mass experimental rig can simulate in laboratory environments different rainfall intensities to the soil water potential of the soil body, contain
Water rate, Temperature Distribution and salt content size influence and with fluctuation in stage situation, research draining and different drops under drainage situation
The seepage flow of the soil body, water salt Transport under raininess degree.The seepage through soil mass experimental rig can simulate reservoir in laboratory environments
Water storage discharges water, Decline or rise of groundwater level situation caused by mining of groundwater or recharge etc., and different level of ground water rate of changes
With drainage rates operating condition, the soil water potential of soil, moisture content, temperature, the size of salt content, Study of The Underground water level at different height are measured
The influence that ramp rate migrates soil water potential, moisture content size, Temperature Distribution and water salt.
Compared to prototype measurement, the seepage through soil mass experimental rig due to being observed in laboratory environments to the soil body, by
External influence factor is few, can obtain that the soil body is comprehensive and accurate data.
Other features and advantages of the present invention will illustrate in the following description, also, partly become from specification
It obtains it is clear that understand through the implementation of the invention.The objectives and other advantages of the invention are in specification, claims
And structure specifically noted by attached drawing is achieved and obtained.
Detailed description of the invention
It, below will be to specific in order to illustrate more clearly of the specific embodiment of the invention or technical solution in the prior art
Embodiment or attached drawing needed to be used in the description of the prior art be briefly described, it should be apparent that, it is described below
Attached drawing is some embodiments of the present invention, for those of ordinary skill in the art, before not making the creative labor
It puts, is also possible to obtain other drawings based on these drawings.
Fig. 1 is the structural schematic diagram of seepage through soil mass experimental rig provided in an embodiment of the present invention；
Fig. 2 is the structural schematic diagram of hollow out partition provided in an embodiment of the present invention；
Fig. 3 is the structural schematic diagram of hollow out bung provided in an embodiment of the present invention；
Fig. 4 is the structural schematic diagram of the multilayer soil body provided in an embodiment of the present invention.
Icon: 100- tests bucket；110- hollow out partition；120- blotter；130- drainpipe；131- drain valve；
140- hollow out bung；200- water supply mechanism；210- water tank；220- column；The first water inlet pipe of 230-；231- first is intake
Valve；232- spray head；The second water inlet pipe of 240-；The second inlet valve of 241-；300- collecting mechanism；310- first sensor
Component；320- second sensor component；330- data processing unit；400- temperature-constant plate；410- condensation cycle pipe；420-
Exhaust pipe；500- heat insulation layer.
Specific embodiment
Technical solution of the present invention is clearly and completely described below in conjunction with attached drawing, it is clear that described implementation
Example is a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, ordinary skill
Personnel's every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", "vertical",
The orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" be based on the orientation or positional relationship shown in the drawings, merely to
Convenient for description the present invention and simplify description, rather than the device or element of indication or suggestion meaning must have a particular orientation,
It is constructed and operated in a specific orientation, therefore is not considered as limiting the invention.In addition, term " first ", " second ",
" third " is used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or be integrally connected；It can
To be mechanical connection, it is also possible to be electrically connected；It can be directly connected, can also can be indirectly connected through an intermediary
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood at this with concrete condition
Concrete meaning in invention.
Embodiment is described in detail with reference to the accompanying drawing: Fig. 1 is seepage through soil mass provided in an embodiment of the present invention test
The structural schematic diagram of device；Fig. 2 is the structural schematic diagram of hollow out partition 110 provided in an embodiment of the present invention；Fig. 3 is that the present invention is real
The structural schematic diagram of the hollow out bung 140 of example offer is provided；Fig. 4 is the structural representation of the multilayer soil body provided in an embodiment of the present invention
Figure.
Embodiment 1
A kind of seepage through soil mass experimental rig is present embodiments provided, please with reference to Fig. 1 to Fig. 4 in Figure of description.
As shown in Figure 1, the seepage through soil mass experimental rig includes test bucket 100, water supply mechanism 200, collecting mechanism 300.
Hollow out partition 110 shown in Fig. 2 is provided in test bucket 100, test bucket 100 has drainpipe 130, drainpipe
130 are located between hollow out partition 110 and the bottom side for testing bucket 100, and drain valve 131 is arranged on drainpipe 130.
Water supply mechanism 200 has water tank 210, the first water inlet pipe 230 and the second water inlet pipe 240；Water tank 210 can be along vertical
Direction movement；One end of first water inlet pipe 230 is connected to water tank 210, and the opening of the other end from test bucket 100 protrudes into test bucket
100 inner cavity, and the first inlet valve 231 is set on first water inlet pipe 230；One end of second water inlet pipe 240 and water tank 210 connect
Logical, the other end is connected to the side wall of test bucket 100 and is connected to the inner cavity of test bucket 100, is located at hollow out partition 110 and test bucket
Between 100 bottom plate, and the second inlet valve 241 is set on second water inlet pipe 240.
Collecting mechanism 300 protrudes into the inner cavity of test bucket 100, for acquiring soil moisture content, temperature, salt content and Tu Shui
Gesture.
Different rainfall intensities are simulated to the soil water potential, moisture content, Temperature Distribution of the soil body using the seepage through soil mass experimental rig
The infiltration of the soil body under influence and Decline or rise of groundwater level situation with salt content, research draining and rainfall intensities different under not drainage situation
Stream, water salt Transport.It is first shut off drainpipe 130, the first water inlet pipe 230 and the second water inlet pipe 240, soil sample is layered and is inserted
It tests in bucket 100, and is successively compacted, keep the porosity for testing the soil sample in bucket 100 identical as undisturbed soil.Then water tank is adjusted
210 height and to highly recording, open 230 simulated rainfall of the first water inlet pipe, can by adjust the first inlet valve 231 come
Different rainfall intensities is simulated, when the top surface that the water level that rainfall generates bankets well beyond test use, soil body immersion is made to reach full
With rear, the first water inlet pipe 230 of closing, opening drainpipe 130 flows out the water in the soil body naturally.Using collecting mechanism 300 every
Moisture content of 3 minutes records, continuous record 3 times when moisture content is identical or very close, that is, think that the state is rainfall infiltration
Original state, be then turned off drainpipe 130.To simulate impervious foundation, open the first water inlet pipe 230, adjust first into
Water valve 231 simulates different rainfall intensities, and acquisition at intervals of two minutes is once banketed moisture content at different height, temperature, salt content
And soil water potential.To simulate pervious foundation, the first water inlet pipe 230 and drainpipe 130 are opened, the first inlet valve 231 is adjusted and carrys out mould
Intend different rainfall intensities, moisture content, temperature, salt content and the soil water potential at the primary different height that bankets of acquisition in 1 minute.
Reservoir filling is simulated using the seepage through soil mass experimental rig or is discharged water, underground caused by mining of groundwater or recharge etc.
Influence and Study of The Underground fluctuation in stage rate of the fluctuation in stage to the soil water potential of the soil body, moisture content, temperature and salt content are to soil
The flow of water, moisture content size, Temperature Distribution and the influence of water salt migration.It is first shut off drainpipe 130, the first water inlet pipe 230 and
Soil sample is layered in filling test bucket 100, and is successively compacted by two water inlet pipes 240, makes the porosity for testing the soil sample in bucket 100
It is identical as undisturbed soil.Then adjustment water tank 210 opens the second water inlet pipe 240, when water level is complete highly and to highly recording
The second water inlet pipe 240 is closed after so that soil body immersion is reached saturation more than the test top surface banketed, drainpipe 130 is opened, makes
Water in the soil body flows out naturally.Using collecting mechanism 300 every moisture content of 3 minutes records, continuous record 3 times, moisture content
When identical or very close, that is, think that the state is the original state of rainfall infiltration, be then turned off drainpipe 130.It simulates impermeable
When water ground, the lifting of the altitude simulation reservoir level of regulating tank 210, highly and in water tank 210 liquid level is high for record water tank 210
Degree opens the second water inlet pipe 240, at intervals of two minutes moisture content, temperature, salt content and the soil at the primary different height that bankets of acquisition
The flow of water, fixed 210 position of water tank simultaneously record liquid level in 210 height of water tank and water tank 210, adjust the second inlet valve 241, control
The rate of change of water level processed, the rate of change of simulated groundwater position lifting, at different height is once banketed in acquisition in 1 minute
Moisture content, temperature, salt content and soil water potential.When simulating pervious foundation, fixed 210 position of water tank and record 210 height of water tank and
Liquid level in water tank 210 opens drainpipe 130, adjusts drain valve 131, simulates the seepage flow mistake of the soil body under different drainage rates
Journey, moisture content, temperature, salt content and soil water potential at the primary different height that bankets of acquisition in 1 minute.
The seepage through soil mass experimental rig can simulate in laboratory environments different rainfall intensities to the soil water potential of the soil body, contain
Water rate, Temperature Distribution and salt content size influence and with fluctuation in stage situation, research draining and different drops under drainage situation
The seepage flow of the soil body, water salt Transport under raininess degree.The seepage through soil mass experimental rig can simulate reservoir in laboratory environments
Water storage discharges water, Decline or rise of groundwater level situation caused by mining of groundwater or recharge etc., and different level of ground water rate of changes
With drainage rates operating condition, the soil water potential of soil, moisture content, temperature, the size of salt content, Study of The Underground water level at different height are measured
The influence that ramp rate migrates soil water potential, moisture content size, Temperature Distribution and water salt.
Compared to prototype measurement, the seepage through soil mass experimental rig due to being observed in laboratory environments to the soil body, by
External influence factor is few, can obtain that the soil body is comprehensive and accurate data.
Further, as shown in Figure 1, collecting mechanism 300 includes first sensor component 310, second sensor component 320
With data processing unit 330；Multiple first sensor components 310 be arranged at intervals at along the vertical direction test bucket 100 in, and with
Data processing unit 330 is electrically connected, for acquiring soil moisture content, temperature, conductivity；Multiple 320 edges of second sensor component
Vertical direction is arranged at intervals in test bucket 100, for acquiring soil water potential.
First sensor component 310 is the sensor for including moisture sensor, temperature sensor and conductivity sensor
Group.Moisture sensor acquires the soil moisture content of itself present position and collection result is transferred to processing unit, and temperature passes
Sensor acquires the soil moisture of itself present position and by collection result transmission to processing unit, and conductivity sensor acquisition is certainly
Collection result is simultaneously transferred to processing unit by the soil conductivity of body present position.
Second sensor component 320 is preferably tensometer, or other can measure the device of soil water potential.
The salt content of soil is calculated in the soil conductivity that processing unit can be measured according to conductivity sensor, simultaneously
Soil moisture content, temperature, salt content are transferred to receiving device.Processing unit can be able to carry out data for single-chip microcontroller, PLC etc.
The component of calculating, receiving device can be display, PC, mobile phone etc., can be wire transmission, or wireless to pass
It is defeated.When being wirelessly transferred, processing unit further includes bluetooth module, wifi module or other wireless transport modules.
Further, as shown in Figure 1, the distance between adjacent first sensor component 310 is equal, adjacent second sensor
The distance between component 320 is equal, and the height of multiple first sensor components 310 and multiple second sensor components 320
Height corresponds.
Preferably, the distance between adjacent first sensor component 310 be 10cm, adjacent second sensor component 320 it
Between distance be 10cm；The first sensor component 310 of the top and soil body top surface distance are 10cm, the first sensing of bottom
Device assembly 310 and soil body bottom surface distance are 10cm；The second sensor component 320 of the top and soil body top surface distance are 10cm,
The second sensor component 320 of bottom and soil body bottom surface distance are 10cm.
The distance between adjacent first sensor component 310 is equal to make the collected number of multiple first sensor components 310
According to the variation at the uniform velocity increasing soil moisture content, temperature, salt content with depth of soil is able to reflect, data result more has reference
Value.The distance between adjacent second sensor component 320 is equal so that the collected data of multiple second sensor components 320
It is able to reflect the variation at the uniform velocity increasing soil water potential with depth of soil, data result has more reference value.
The height of multiple first sensor components 310 and the height of multiple second sensor components 320 one-to-one correspondence can
Correspond collected soil water potential and moisture content, temperature, conductivity, data are more accurate, and reference value is higher.
Further, as shown in Figure 1, water supply mechanism 200 further includes the column 220 being vertically arranged, and column 220 is provided with
Scale；Water tank 210 is connect with column 220, and can be slided along column 220, and water tank 210 is provided with the scale of vertical direction.
Specifically, 220 pedestal of column is arranged in 220 lower end of column, and 220 pedestal of column is placed in ground, on column 220 along from
Body length direction is provided with the graduation mark for indicating height.Water tank 210 is set on 210 pedestal of water tank, 210 pedestal of water tank with it is described
Column 220 is slidably connected, and can read the height of water tank 210 at this time from the link position of 210 pedestal of water tank and column 220.Water
The lateral surface or inner wall of case 210 are provided with the graduation mark of vertical direction, can read water tank from the graduation mark on water tank 210
Water surface elevation in 210.
Further, as shown in Figure 1, blotter 120 is arranged between hollow out partition 110 and test 100 bottom side of bucket.
The blotter 120 is the rubble of diameter 20cm or so, so that the uniform fluid flow point of the second water inlet pipe 240 outflow
It dissipates, prevents water flow from washing away to the generation of the bottom soil body.Hollow out partition 110 is located at blotter 120, and on 110 upper berth of hollow out partition
If one layer of gauze, prevent the tiny soil particle in seepage flow and drainage procedure from being taken away or being filled into blotter 120 by water flow, together
When can also further disperse the water flow of the second water inlet pipe 240.
Further, as shown in Figure 1, the end for protruding into test bucket 100 of the first water inlet pipe 230 is equipped with spray head 232.
Spray head 232 is installed in the end of the first water inlet pipe 230, the water flow for flowing out the first water inlet pipe 230 is more dispersed,
It is truer to the simulation of precipitation.Preferably, the surface of banketing in spray head 232 and test bucket 100 is with certain distance, spray
The diameter at surface of banketing of first 232 water flows sprayed is equal with the test internal diameter of bucket 100, makes to test banketing in bucket 100
Precipitation can be equably received, keeps the data of acquisition more accurate.
Further, as shown in Figure 1, seepage through soil mass experimental rig further includes two temperature-constant plates 400, two temperature-constant plates 400
Inside it is provided with condensate circulation pipe；Wherein a temperature-constant plate 400 is set to the opening of test bucket 100, will test the opening of bucket 100
It blocks, another temperature-constant plate 400 is set to the bottom side of test bucket 100.
After above-mentioned two temperature-constant plate 400 is arranged in the seepage through soil mass experimental rig, it can simulate in laboratory environments not
Soil layer with position is under different solidification points, the soil water potential, moisture content, temperature of rainfall infiltration or groundwater level fluctuation to the soil body
With the influence of salt content size, study Unidirectional Freezing, it is two-way freeze, unidirectionally melt and Frozen-thawed cycled when, the infiltration of the soil body
Stream and water salt Transport.
The soil layer of different location in Unidirectional Freezing, two-way freeze, unidirectionally melt and implementation method situations such as Frozen-thawed cycled
It is as follows:
As shown in figure 4, I, II, III and IV respectively indicate the number of 4 layers of soil layer, every layer of soil thickness is 1.2m, soil layer temperature
Degree is respectively T from top to bottom1、T2、T3、T4And T5。
If the seepage flow and water salt migration problem to cold the first layer soil body of area's winter I carry out test, can will be filled shown in Fig. 1
The temperature setting of the temperature-constant plate 400 of the opening for being located at test bucket 100 in setting is T1, will be in the constant temperature of the bottom side of test bucket 100
The temperature setting of plate 400 is T2.Soil water potential, moisture content, temperature and the salt content at earth pillar different height are measured at such a temperature
Etc. parameters.The test of other soil layers is similar with the above method.
Unidirectional Freezing two-way freeze, unidirectionally melts and situations such as Frozen-thawed cycled can also need to adjust two according to test
The temperature of temperature-constant plate 400 is realized.
Further, as shown in Figure 1, being set on the temperature-constant plate 400 of the opening of test bucket 100 has exhaust pipe 420,
Test bucket 100 is protruded into 420 one end of exhaust pipe.
The inner cavity for testing bucket 100 is in communication with the outside by exhaust pipe 420, makes to test air pressure and extraneous air pressure in bucket 100
Balance, avoids influence of the air pressure to test result, the accuracy of guarantee test data.
Further, as shown in Figure 1, the lateral surface of test bucket 100 wraps up heat insulation layer 500.
The extraneous temperature of test bucket 100 can be reduced to test in the lateral surface package heat insulation layer 500 of test bucket 100
The influence banketed in bucket 100, is further ensured that the accuracy of temperature data.
Further, it tests in bucket 100 and is additionally provided with hollow out bung 140 shown in Fig. 3, hollow out bung 140 is located at hollow out
110 top of partition, for being covered on the upside of soil.
During each test, after soil sample is layered filling test bucket 100 and is successively compacted, hollow out bronze medal is covered in soil
On sample, prevent native top surface from generating evaporation loss, while hollow out bung 140 can be communicated with the atmosphere in guarantee test bucket 100, make to try
The air pressure for testing bucket 100 will not be influenced by hollow out bung 140.
Claims (10)
1. a kind of seepage through soil mass experimental rig, which is characterized in that including testing bucket, water supply mechanism, collecting mechanism；
Be provided with hollow out partition in the test bucket, the test bucket has a drainpipe, the drainpipe be located at the hollow out every
Between plate and the bottom side of the test bucket, and drain valve is set on the drainpipe；
The water supply mechanism has water tank, the first water inlet pipe and the second water inlet pipe；
The water tank can be vertically moving；
One end of first water inlet pipe is connected to the water tank, and the opening of the other end from the test bucket protrudes into the test bucket
Inner cavity, and the first inlet valve is set on first water inlet pipe；
One end of second water inlet pipe is connected to the water tank, the other end be connected to it is described test bucket side wall and with the examination
The inner cavity connection for testing bucket between the hollow out partition and the bottom plate of the test bucket, and is arranged on second water inlet pipe
Second inlet valve；
The collecting mechanism protrudes into the inner cavity of the test bucket, for acquiring soil moisture content, temperature, salt content and soil water potential.
2. seepage through soil mass experimental rig according to claim 1, which is characterized in that the collecting mechanism includes the first sensing
Device assembly, second sensor component and data processing unit；
Multiple first sensor components are arranged at intervals at along the vertical direction in the test bucket, and with the data processing
Unit electrical connection, for acquiring soil moisture content, temperature, conductivity；
Multiple second sensor components are arranged at intervals at along the vertical direction in the test bucket, for acquiring soil Tu Shui
Gesture.
3. seepage through soil mass experimental rig according to claim 2, which is characterized in that the adjacent first sensor component it
Between be equidistant, the distance between adjacent described second sensor component is equal, and multiple first sensor components
Height and the height of multiple second sensor components correspond.
4. seepage through soil mass experimental rig according to claim 3, which is characterized in that the water supply mechanism further includes setting vertically
The column set, and the column is provided with scale；
The water tank is connect with the column, and can be slided along the column, and the water tank is provided with the quarter of vertical direction
Degree.
5. seepage through soil mass experimental rig according to claim 4, which is characterized in that the hollow out partition and test bucket bottom side
Between blotter is set.
6. seepage through soil mass experimental rig according to claim 5, which is characterized in that protruding into for first water inlet pipe is described
The end of test bucket is equipped with spray head.
7. seepage through soil mass experimental rig according to claim 6, which is characterized in that the seepage through soil mass experimental rig also wraps
Two temperature-constant plates are included, are provided with condensate circulation pipe in two temperature-constant plates；
Wherein a temperature-constant plate is set to the opening of the test bucket, the opening of the test bucket is blocked, another perseverance
Warm plate is set to the bottom side of the test bucket.
8. seepage through soil mass experimental rig according to claim 7, which is characterized in that be set to the opening of the test bucket
Temperature-constant plate on have exhaust pipe, the test bucket is protruded into described exhaust pipe one end.
9. seepage through soil mass experimental rig according to claim 8, which is characterized in that the lateral surface of the test bucket, which wraps up, to be protected
Warm thermal insulation layer.
10. seepage through soil mass experimental rig according to claim 9, which is characterized in that be additionally provided with and engrave in the test bucket
Empty barrel lid, the hollow out bung are located above the hollow out partition, for being covered on the upside of soil.
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| CN113324468B (en) * | 2021-06-28 | 2022-06-21 | 山东科技大学 | Testing device and testing method for measuring seepage height of reverse seepage experiment |
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