CN205861587U - Seepage flow freezing test device - Google Patents
Seepage flow freezing test device Download PDFInfo
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- CN205861587U CN205861587U CN201620734254.0U CN201620734254U CN205861587U CN 205861587 U CN205861587 U CN 205861587U CN 201620734254 U CN201620734254 U CN 201620734254U CN 205861587 U CN205861587 U CN 205861587U
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Abstract
This utility model provides one that seepage flow can be made to reach uniform laminar flow condition, and simulates the manual pipe jacking process under the conditions of this seepage flow, and can provide the seepage flow freezing test device of strong theoretical basis for reality construction；Including casing；The first compacted cohesive soil layer, soil sample layer and the second compacted cohesive soil layer from top to bottom it is disposed with in this casing, at least longitudinally disposed freezing pipe it is additionally provided with in described casing, described freezing pipe is at least arranged longitudinally through described soil sample layer, is additionally provided with several temperature sensors in described soil sample layer；One end sidewall of described casing is additionally provided with clear water water inlet, and is additionally provided with the Graceful mouth of a river on the wall box away from described clear water water inlet；Also include for the circular refrigerating mechanism to freezing pipe input coolant；Also include the data for gathering described temperature sensor the data acquisition module being analyzed.
Description
Technical field
The present invention relates to seepage flow freezing test technical field, particularly relate to a kind of seepage flow freezing test device.
Background technology
Artificial freezing technology is a stratum modification method having nearly 130 years applicating histories, and its principle is by manually
Refrigeration, freezes unstable aqueous soft layer, forms the watertightness artificial freezing wall that intensity is higher in underground, utilizes it to support
The external loads such as ground pressure around anti-underground engineering, hydraulic pressure, isolation subsoil water and the hydraulic connection of underground engineering, reach protecting field
The purpose of lower engineering construction；Over more than 60 year, this technology mainly has vertical shaft for mine, excavation of foundation pit, city in the range of application of China
In the underground engineering constructions such as political affairs engineering construction, constructing metro tunnel.Along with the exploitation of the underground space quickly grow, face more
Add the engineering geological condition of complexity and strict construction requirement.
When reality carries out manual pipe jacking construction, if stratum filtration speed is excessive, frost wall would become hard to hand over circle or reach
Design thickness, under seepage flow condition freezing condition, the temperature field of barrier changes more complicated under the effect of seepage field, understands seepage flow
Under the conditions of the change of temperature field feature of frost wall, for grasping artificial freezing wall, to form rule significant.
Summary of the invention
It is an object of the invention to overcome the deficiencies in the prior art, adapt to reality need, it is provided that one can make seepage flow reach
To uniform laminar flow condition, and simulate the manual pipe jacking process under the conditions of this seepage flow, and can provide strong for reality construction
The seepage flow freezing test device of theoretical basis.
In order to realize the purpose of the present invention, the technical solution adopted in the present invention is:
A kind of seepage flow freezing test device of design, including casing；The first pressure from top to bottom it is disposed with in this casing
Real clay layer, soil sample layer and the second compacted cohesive soil layer, be additionally provided with at least longitudinally disposed freezing pipe in described casing,
Described freezing pipe is at least arranged longitudinally through described soil sample layer, is additionally provided with several temperature sensors in described soil sample layer；
One end sidewall of described casing is additionally provided with clear water water inlet, and goes back on the wall box away from described clear water water inlet
It is provided with the Graceful mouth of a river；Also include for the circular refrigerating mechanism to freezing pipe input coolant；Also include for gathering
The data stating temperature sensor the data acquisition module being analyzed.
Preferably, described freezing pipe is three, and these three freezing pipes are set in parallel in same plane, and these three freezing pipes
The plane at place is vertical to Graceful mouth of a river direction of advance from clear water water inlet with current.
Preferably, in described first compacted cohesive soil layer, it is provided with the main drain pipe of horizontally set, and presses described second
Being provided with total feed tube in real clay layer, the upper end of described freezing pipe is connected with described main drain pipe by flexible hose, described
The lower end of freezing pipe connects with described total feed tube；It is being positioned at freezing of described first compacted cohesive soil layer and the second compacted cohesive soil layer
Heat-insulation layer also it is enclosed with on the tube wall of knot pipe.
Preferably, described coolant is saline；Described circular refrigerating mechanism includes brine refrigerating machine and this brine refrigerating machine
The brine pump of saline liquid outlet connection, described brine pump passes sequentially through brine flow meter, brine pressure table and described total feed liquor
The entrance point connection of pipe, the port of export of described main drain pipe connects with the saline inlet of described brine refrigerating machine.
Preferably, also include that thermostatted water cycling mechanism, described thermostatted water cycling mechanism include thermostatic water tank and this thermostatted water
The clarified water pump of the outlet of case and the control valve of the outlet of this clarified water pump, bypass valve, described control valve passes sequentially through glass
Glass spinner flowmeter, the first Pressure gauge connect with the clear water water inlet on described casing, described bypass valve by pipeline also with institute
State thermostatic water tank connection；The Graceful mouth of a river on described casing is by the inlet communication of the second Pressure gauge with described thermostatic water tank；
Described thermostatic water tank includes filling the clear water casing of clear water, the electrically heated rod being arranged in this filtered water tank body, cooling-water temperature sensor, also
Including the thermostat being connected with described electrically heated rod and cooling-water temperature sensor.
Preferably, described clear water water inlet is arranged on the wall box of described second compacted cohesive soil layer region, institute
State the Graceful mouth of a river to be arranged on the wall box of described first compacted cohesive soil layer region；In going out of described clear water water inlet
It is the filter screen of 200 mesh that the water inlet end at water end (W.E.) and the described Graceful mouth of a river is provided with.
Preferably, in described casing, it is provided with spaced two dividing plates, two dividing plates are provided with several
For crossing the through hole of water；Region in described casing is divided into surge chamber, sample chamber and reservoir chamber by two dividing plates from left to right,
Described first compacted cohesive soil layer, soil sample layer and the second compacted cohesive soil layer may be contained within described sample chamber；At described surge chamber and
The cushion being made up of the mixture of gravel and coarse sand all it is filled with in reservoir chamber；Sidewall difference at said two dividing plate
Being provided with filter screen, described filter screen is 100 mesh；The clay layer of 255mm it is arranged above at described cushion, and
This clay layer is arranged above the bitumen layer of 50mm.
Preferably, described data acquisition module includes the temperature data acquisition instrument being connected with described temperature sensor and is somebody's turn to do
The computer that temperature data acquisition instrument connects.
Preferably, described soil sample layer is the layer of sand being made up of medium sand, and the thickness of described soil sample layer is 300mm～500mm, institute
The thickness stating the first compacted cohesive soil layer is 200mm～400mm;The thickness of the second compacted cohesive soil layer is 150mm～350mm；Institute
State the first compacted cohesive soil layer and be arranged above the bitumen layer of 40mm～60mm.
Preferably, the temperature sensor being arranged in described soil sample layer is distributed in three planes from top to bottom arranged,
The first thermometric face of being respectively, the second thermometric face and the 3rd thermometric face, and it is positioned at described first thermometric face, the second thermometric face and the 3rd
Temperature sensor on thermometric face is fixedly installed by grid respectively.
The beneficial effects of the present invention is:
1. can be used for simulating the formational situation of saturated sand frost wall under the conditions of seepage flow by this device, it is achieved ooze in difference
Under the conditions of Flow Velocity, solidification point, freezing pipe spacing etc., in monitoring saturated sand, the development in temperature field, studies with this and oozes
The size characteristic of frost wall and the feature in its temperature field under the conditions of stream, simultaneously seepage flow conditions different to research and freezing condition pair
The influence that under the conditions of seepage flow, frost wall is formed has great importance, and can be that underground engineering construction provides strong theoretical base
Plinth.
2. can be studied distribution characteristics and the Changing Pattern of soil temperature field in seepage flow freezing process by this device, for numerical value
Simulation and hydrothermal reaction coupling Analysis on Mechanism provide data support, can study the temperature of partial freezing's sand barrier under the conditions of seepage flow simultaneously
Degree field feature, i.e. by changing the brine temp entering this device, can reach to change the effect of solidification point；And by changing
Become the clear water flow entering this device, can reach to change the effect of seepage flow condition.
Accompanying drawing explanation
Fig. 1 is the primary structure schematic diagram of the present invention；
Fig. 2 is the box-section structural representation in the present invention；
Fig. 3 be the first compacted cohesive soil layer in the present invention, soil sample layer and the second compacted cohesive soil layer and in bury underground freeze
Pipe, temperature sensor arrange relation schematic diagram；
Fig. 4 is the freezing pipe primary structure schematic diagram in the present invention；
Fig. 5 is that the case-side in the present invention regards one of state primary structure schematic diagram；
Fig. 6 is the two primary structure schematic diagrams that the case-side in the present invention regards state；
Fig. 7 is the temperature sensor installation position schematic diagram on the first thermometric face in the present invention；
Fig. 8 is the temperature sensor installation position schematic diagram on the second thermometric face in the present invention；
Fig. 9 is the temperature sensor installation position schematic diagram on the 3rd thermometric face in the present invention；
In figure:
H1. the first thermometric face；H2. the second thermometric face；H3. the 3rd thermometric face；
L1, L2. interarea thermometric line；L3. interface thermometric line；L4. freezing pipe row place plane thermometric line；
1. cooling-water temperature sensor;2. electrically heated rod;3. clarified water pump;4. bypass valve;5. control valve;6. glass rotameter;
7. the first Pressure gauge;8. casing;9. clear water water inlet;10. the Graceful mouth of a river;The entrance point of 11. total feed tubes;12. always go out liquid
The port of export of pipe;13. second Pressure gauges;14. thermostatic water tanks;15. brine refrigerating machines;16. brine pumps;17. brine flow meters;
18. brine pressure tables;19. thermostats；
101. wall box;102,103. dividing plate;104,105. filter screen;106,120. cushion;107. first pressures
Real clay layer;108. soil sample layers;109. second compacted cohesive soil layers;110,111. clay layer；112,113. filter screen；114、115、
117,118. heat-insulation layer；116. bitumen layer；
200. freezing pipe；201. main drain pipe;202,208. connection screw thread;204. flexible hose;205. total feed tubes;
The connection screw thread that 206. freezing pipes are connected with total feed tube;The connection screw thread that 207. flexible hoses are connected with main drain pipe;
301. temperature sensor;
302, the temperature sensor on 303,304,305. second thermometric faces;
306, the temperature sensor on 307,308,309. first thermometric faces;
310, the temperature sensor on 311,312,313. the 3rd thermometric faces;
401. deep floor.
Detailed description of the invention
The present invention is further described with embodiment below in conjunction with the accompanying drawings:
Embodiment: a kind of seepage flow freezing test device, sees Fig. 1 to Fig. 9；Including casing 8；By up in this casing 8
Under be disposed with the first compacted cohesive soil layer 107, soil sample layer 108 and the second compacted cohesive soil layer 109, also set up in described casing
Having three longitudinally disposed freezing pipes 200, the design is provided with spaced two dividing plates 102,103 in described casing 8,
Being provided with several through holes for water excessively on two dividing plates 102,103, two dividing plates 102,103 are by described casing 8
Region is divided into surge chamber, sample chamber and reservoir chamber, above-described first compacted cohesive soil layer 107, soil sample layer 108 from left to right
May be contained within described sample chamber with the second compacted cohesive soil layer 109；Preferably, the design is also in described surge chamber and reservoir chamber
All being filled with the cushion 106,120 being made up of the mixture of gravel and coarse sand, cushion primarily serves buffering current
Effect so that flowing through the current in soil sample layer is uniform laminar flow.
Preferably, in the design, above-described soil sample layer 108 is the layer of sand being made up of medium sand, described soil sample layer 108
Thickness is 400mm, and the thickness of the first described compacted cohesive soil layer 107 is 300mm;The thickness of the second compacted cohesive soil layer is 250mm；
The design is also arranged above the bitumen layer of 50mm at described first compacted cohesive soil layer；Above described cushion 106,120
It is additionally provided with the clay layer of 255mm, and is arranged above the bitumen layer of 50mm at this clay layer, play resistance effect with this,
First compacted cohesive soil layer the 107, second compacted cohesive soil layer and bitumen layer in the design primarily serve buffering frost heave and the work blocked water
With.
In the design, described freezing pipe 200 is at least arranged longitudinally through described soil sample layer 108, and the design is also described
It is additionally provided with clear water water inlet 9 on one end sidewall of casing 8, and goes back on the wall box 101 away from described clear water water inlet 9
It is provided with the Graceful mouth of a river 10；Described clear water water inlet 9 is arranged at the case-side of described second compacted cohesive soil layer 109 region
On wall 101, the described Graceful mouth of a river 10 is arranged on the wall box 100 of described first compacted cohesive soil layer 107 region；Excellent
Choosing, it is 200 purposes that the design water inlet end in the water side of described clear water water inlet and the described Graceful mouth of a river is provided with
Filter screen, the thin particulate matter that this filter screen is possible to prevent in casing enters in pipeline and results in blockage；Also said two dividing plate 102,
The sidewall of 103 is respectively arranged with filter screen 104,105, and described filter screen 104,105 is 100 mesh, plays separation and mistake
Filter effect, it is preferred that the design is also additionally provided with deep floor 401 at the outer wall of described casing 8, also includes for by this casing
The top cover that 8 upper end open cover.
Preferably, three freezing pipes 200 in the design are set in parallel in same plane (in actual application, it freeze
The knot number of pipe and arrangement form can be changed according to practical situation, as may be disposed so that linear, annular, the shape such as quincunx
Shape), and the plane at these three freezing pipe 200 places is vertical from the direction that clear water water inlet 9 advances to the Graceful mouth of a river 10 with current
Directly；According to stratum freezing engineering experience, Freezing stratum as rapid tube pitch is generally 6～10 times of freezing pipe diameter, freezing in the design
Knot pipe arrangement pitch is 110mm；Further, the design is also provided with horizontally set in described first compacted cohesive soil layer 107
Main drain pipe 201, and in described second compacted cohesive soil layer 109, be provided with total feed tube 205, described freezing pipe 200
Upper end is connected with described main drain pipe 201 by flexible hose 204, the lower end of described freezing pipe 200 and described total feed tube
205 connections, the freezing pipe in the design can be pulled down from casing, can reach the effect of change freezing pipe spacing with this；With
Time, the tube wall of freezing pipe 200 being positioned at described first compacted cohesive soil layer 107 and the second compacted cohesive soil layer 109 also wraps up
There is heat-insulation layer.
Further, the design it also include the circular refrigerating mechanism for inputting coolant to freezing pipe 200, described
Coolant is saline；Described circular refrigerating mechanism includes the saline liquid outlet of brine refrigerating machine 15 and this brine refrigerating machine 15
The brine pump 16 of connection, described brine pump 16 passes sequentially through brine flow meter 17, brine pressure table 18 and described total feed tube
Entrance point 11 connects, and the port of export 12 of described main drain pipe connects with the saline inlet of described brine refrigerating machine 15；By this
Circular refrigerating mechanism can reduce the temperature of freezing pipe surrounding soil, reaches to freeze the purpose of the soil body；Preferably, thermostatted water is also included
Cycling mechanism, described thermostatted water cycling mechanism includes the clarified water pump of the outlet of thermostatic water tank 14 and this thermostatic water tank 14
3 and the control valve 5 of outlet of this clarified water pump 3, bypass valve 4, described control valve 5 passes sequentially through glass rotameter
6, the first Pressure gauge 7 connects with the clear water water inlet 9 on described casing 8, described bypass valve 4 by pipeline also with described thermostatted water
Case 14 connects；The Graceful mouth of a river on described casing 8 is by the inlet communication of the second Pressure gauge 13 with described thermostatic water tank 14；This
Described thermostatic water tank 14 in design includes filling the clear water casing of clear water, the electrically heated rod 2 being arranged in this filtered water tank body, water
Temperature sensor 1, also includes the thermostat 19 being connected with described electrically heated rod 2 and cooling-water temperature sensor 1.
Further, the design is also additionally provided with several temperature sensors 301 in described soil sample layer 108；It is arranged at
Temperature sensor 301 in described soil sample layer 108 is distributed in three planes from top to bottom arranged, the respectively first thermometric face
H1, the second thermometric face H2 and the 3rd thermometric face H3, wherein, the first thermometric face H1 distance soil sample layer bottom surface 300mm, the second thermometric face
H2 distance soil sample layer bottom surface 200mm, the 3rd thermometric face H3 distance soil sample layer bottom surface 100mm, and be positioned at described first thermometric face H1,
Temperature sensor on second thermometric face H2 and the 3rd thermometric face H3 is fixedly installed by grid respectively, its grid side of being fixedly installed
Method is: first, temperature sensor is fixed on the grid that diameter 1mm iron wire is made；Then, grid is laid in soil sample layer
Predetermined altitude；3rd, arrange the connecting line of temperature sensor, its share split is drawn in, enter compacted cohesive soil layer from casing edge；
4th, in compacted cohesive soil layer, the connecting line that share split is drawn in is integrated into one, and does water-proofing treatment with paraffin；Finally, by it
Ring flange reserved on top cover of box, is connected on temperature sensor；Concrete, on described first thermometric face H1
It is arranged at intervals with 18 temperature sensors, can be found in Fig. 7；Described second thermometric face H2 is arranged at intervals with 65 temperature sensing
Device, can be found in Fig. 8；Described 3rd thermometric face H3 is arranged at intervals with 22 temperature sensors, can be found in Fig. 9, in figure, L1,
L2 is interarea thermometric line, and L3 is interface thermometric line, and L is freezing pipe axial plane place plane thermometric line；As seen from the figure, the design uses
Be become spacing lay temperature sensor mode, use become spacing lay temperature sensor mode, both can well supervise
The situation of temperature field, check weighing point position development, can avoid again temperature sensor to arrange that multipair sample caused large disturbances；And lead to
Cross grid fixed and arranged sensor, the temperature sensor impact on sample can be effectively reduced so that in test, sample is the most equal
One；Preferably, the design it also include the data for gathering described temperature sensor the data acquisition module being analyzed,
Described data acquisition module includes temperature data acquisition instrument and this temperature data acquisition instrument being connected with described temperature sensor
The computer connected.
Part seepage flow freezing test that the seepage flow freezing test device of the present embodiment is carried out is it is concluded that as follows:
Following table is the physical parameter of the medium sand used in soil sample layer in this enforcement:
Table 1 sample main physical parameters
| Soil body title | Porosity (%) | Moisture content (%) | Dry density ρd(Kg/m3) | Heat conductivity λ (W/ (m K)) | Specific heat capacity of mass c(J/ (Kg. DEG C)) |
| Xuzhou medium sand | 39 | 29 | 1.34×103 | 1.41 | 2.36×103 |
The seepage flow freezing test carried out by the device of this embodiment is in deep rock-soil mechanics and underground engineering country
Key lab carries out, and carries out 4 groups of tests altogether, under identical freezing pipe spacing, carries out sand barrier temperature under different percolation flow velocity
The research of degree field, can be shown in Table 2 studying the seepage effect impact on sand freezing wall temperature field, experimental establishment and result.
The result of partial freezing's sand BARRIER MODEL test under the conditions of table 2 seepage flow
Average rate of temperature fall in table 3 freezing process
Upper table 3 lists the average rate of temperature fall of different measuring points position under the conditions of different tests, contrasts different tests bar
Rate of temperature fall under part is it is found that from upper table 3, along with the increase of percolation flow velocity, the average rate of temperature fall of measuring point is in subtracting
Little trend, time under the conditions of without seepage flow, the average rate of temperature fall of point for measuring temperature is about 4.35oC/h；Under the conditions of percolation flow velocity 7.5m/d
Time, the average rate of temperature fall of point for measuring temperature is about 3.96oC/h；And time under the conditions of percolation flow velocity 15m/d, the average rate of temperature fall of point for measuring temperature
It is about 1.72oC/h.And contrast the average rate of temperature fall of freezing pipe upstream and downstream point for measuring temperature it can be seen that under the conditions of having seepage flow, shield
The average Cooling rate of barrier downstream measuring point is more than measuring point, and percolation flow velocity is the fastest, and this situation is the most obvious；And without seepage flow bar
Under part, barrier upstream and downstream point for measuring temperature Cooling rate size does not has obvious relation.
The experimental analysis repeatedly carried out by this device can be concluded that
(1) under the influence of seepage effect, current bring amount of heat, cause thermo parameters method the most symmetrical, upstream temperature
Degree is apparently higher than downstream, and along with percolation flow velocity strengthens, this unsymmetry is the most obvious, the unsymmetry of interface temperature distribution
More than interarea, frost wall cross sectional shape is similar to heart.
(2) under the influence of seepage effect, soil temperature fall off rate is gradually lowered with flow velocity increase, reaches poised state
Time progressively longer.Under the conditions of seepage flow, the average rate of temperature fall of point for measuring temperature is about 4.35oC/h；Percolation flow velocity 7.5m/d condition
Under, the average rate of temperature fall of point for measuring temperature is about 3.96oC/h；Under the conditions of percolation flow velocity 15m/d, the average rate of temperature fall of point for measuring temperature is about
1.72oC/h.Illustrate that seepage flow condition is very notable to the influence on development of frost wall, under conditions of particularly percolation flow velocity is relatively big, freeze
The development of knot wall receives obstruction greatly, and in engineering, the estimation for percolation flow velocity is the most prudent.
(3), under the conditions of percolation flow velocity 15m/d, frost wall constant thickness is about 60mm, be only without under the conditions of seepage flow, ooze
Under the conditions of Flow Velocity 7.5m/d 40%, 60%, minimum thickness only has 20mm, only without under the conditions of seepage flow, percolation flow velocity 7.5m/d
Under the conditions of 20%, 40%, it is seen that seepage flow to the erosion highly significant outside frost wall, answer emphasis monitor screen edges thickness, protect
Card construction safety.
Being finally pointed out that, what embodiments of the invention were announced is preferred embodiment, but is not limited thereto, this area
Those of ordinary skill, easily according to above-described embodiment, understand the spirit of the present invention, and make different amplifications and change, but
Without departing from the spirit of the present invention, the most within the scope of the present invention.
Claims (10)
1. a seepage flow freezing test device, including casing；It is characterized in that: in this casing, be from top to bottom disposed with
One compacted cohesive soil layer, soil sample layer and the second compacted cohesive soil layer, be additionally provided with at least longitudinally disposed freezing in described casing
Knot pipe, described freezing pipe is at least arranged longitudinally through described soil sample layer, is additionally provided with several temperature and passes in described soil sample layer
Sensor；One end sidewall of described casing is additionally provided with clear water water inlet, and at the case-side away from described clear water water inlet
The Graceful mouth of a river it is additionally provided with on wall；
Also include for the circular refrigerating mechanism to freezing pipe input coolant；Also include for gathering described temperature sensor
Data the data acquisition module being analyzed.
2. seepage flow freezing test device as claimed in claim 1, it is characterised in that: described freezing pipe is three, and these three freeze
Knot pipe is set in parallel in same plane, and the plane at these three freezing pipe places is vertical with current direction of advance.
3. seepage flow freezing test device as claimed in claim 1, it is characterised in that: arrange in described first compacted cohesive soil layer
There is the main drain pipe of horizontally set, and be provided with total feed tube, the upper end of described freezing pipe in described second compacted cohesive soil layer
Being connected with described main drain pipe by flexible hose, the lower end of described freezing pipe connects with described total feed tube；
The tube wall of freezing pipe being positioned at described first compacted cohesive soil layer and the second compacted cohesive soil layer is also enclosed with heat-insulation layer.
4. seepage flow freezing test device as claimed in claim 3, it is characterised in that: described coolant is saline；Described circulation
Refrigeration mechanism includes the brine pump that brine refrigerating machine connects with the saline liquid outlet of this brine refrigerating machine, and described brine pump is successively
Connected with the entrance point of described total feed tube by brine flow meter, brine pressure table, the port of export of described main drain pipe and institute
State the saline inlet connection of brine refrigerating machine.
5. seepage flow freezing test device as claimed in claim 1, it is characterised in that: also include thermostatted water cycling mechanism, described
Thermostatted water cycling mechanism includes that the clarified water pump of the outlet of thermostatic water tank and this thermostatic water tank and this clear water delivery side of pump connect
Logical control valve, bypass valve, described control valve passes sequentially through clear with on described casing of glass rotameter, the first Pressure gauge
Water water inlet connects, and described bypass valve is also connected with described thermostatic water tank by pipeline；The Graceful mouth of a river on described casing leads to
Cross the inlet communication of the second Pressure gauge and described thermostatic water tank；
Described thermostatic water tank includes filling the clear water casing of clear water, the electrically heated rod being arranged in this filtered water tank body, water temperature sensing
Device, also includes the thermostat being connected with described electrically heated rod and cooling-water temperature sensor.
6. seepage flow freezing test device as claimed in claim 1, it is characterised in that: described clear water water inlet is arranged at described the
On the wall box of two compacted cohesive soil layer region, the described Graceful mouth of a river is arranged at described first compacted cohesive soil layer location
On the wall box in territory；It is 200 that water inlet end in the water side of described clear water water inlet and the described Graceful mouth of a river is provided with
Purpose filter screen.
7. seepage flow freezing test device as claimed in claim 1, it is characterised in that: in described casing, it is provided with interval arranges
Two dividing plates, two dividing plates are provided with several for cross water through hole；Two dividing plates are by the region in described casing
It is divided into surge chamber, sample chamber and reservoir chamber, described first compacted cohesive soil layer, soil sample layer and the second compacted cohesive soil layer from left to right
May be contained within described sample chamber；
The cushion being made up of the mixture of gravel and coarse sand all it is filled with in described surge chamber and reservoir chamber；
It is arranged above clay layer at described cushion, and is arranged above bitumen layer at this clay layer；
Sidewall at said two dividing plate is respectively arranged with filter screen, and described filter screen is 100 mesh.
8. seepage flow freezing test device as claimed in claim 1, it is characterised in that: described data acquisition module includes with described
The computer that the temperature data acquisition instrument that temperature sensor connects is connected with this temperature data acquisition instrument.
9. seepage flow freezing test device as claimed in claim 1, it is characterised in that: described soil sample layer is the sand being made up of medium sand
Layer, the thickness of described soil sample layer is 300mm～500mm, and the thickness of described first compacted cohesive soil layer is 200mm～400mm;Second
The thickness of compacted cohesive soil layer is 150mm～350mm；The drip of 40mm～60mm it is arranged above at described first compacted cohesive soil layer
Cyan layer.
10. seepage flow freezing test device as claimed in claim 1, it is characterised in that: it is arranged at the temperature in described soil sample layer
Sensor is distributed in three planes from top to bottom arranged, the respectively first thermometric face, the second thermometric face and the 3rd thermometric face,
And be positioned at the temperature sensor on described first thermometric face, the second thermometric face and the 3rd thermometric face and set by grid is fixing respectively
Put.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620734254.0U CN205861587U (en) | 2016-07-13 | 2016-07-13 | Seepage flow freezing test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620734254.0U CN205861587U (en) | 2016-07-13 | 2016-07-13 | Seepage flow freezing test device |
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| Publication Number | Publication Date |
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| CN205861587U true CN205861587U (en) | 2017-01-04 |
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| CN201620734254.0U Expired - Fee Related CN205861587U (en) | 2016-07-13 | 2016-07-13 | Seepage flow freezing test device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106053522A (en) * | 2016-07-13 | 2016-10-26 | 东华理工大学 | Seepage freezing testing device |
| CN109388159A (en) * | 2017-08-07 | 2019-02-26 | 扬中市宏彬冷暖设备有限公司 | A kind of water warming blanket Host Detection device |
-
2016
- 2016-07-13 CN CN201620734254.0U patent/CN205861587U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106053522A (en) * | 2016-07-13 | 2016-10-26 | 东华理工大学 | Seepage freezing testing device |
| CN109388159A (en) * | 2017-08-07 | 2019-02-26 | 扬中市宏彬冷暖设备有限公司 | A kind of water warming blanket Host Detection device |
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