CN106442939A - Test device for accelerating curing of liquefiable sand on basis of ultrasonic vibration and test method of test device - Google Patents
Test device for accelerating curing of liquefiable sand on basis of ultrasonic vibration and test method of test device Download PDFInfo
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- CN106442939A CN106442939A CN201610918716.9A CN201610918716A CN106442939A CN 106442939 A CN106442939 A CN 106442939A CN 201610918716 A CN201610918716 A CN 201610918716A CN 106442939 A CN106442939 A CN 106442939A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/38—Diluting, dispersing or mixing samples
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- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
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Abstract
The invention discloses a test device for accelerating curing of liquefiable sand on the basis of ultrasonic vibration. The device comprises a vacuum pumping device, an ultrasonic emission device, a thin pipe injection device with holes in the side edge, a water glass solution and calcium chloride solution storage device, a liquid collecting container and a model box, wherein the vacuum pumping device comprises a vacuum pump and an organic plastic film, the ultrasonic emission device is nested on the thin pipe injection device with holes in the side edge, and the liquid collecting container communicates with a drainage port of the vacuum pump; the thin pipe injection device with holes in the side edge comprises a plurality of thin water glass solution injection pipes for injecting water glass solutions and a plurality of thin calcium chloride solution pipes for injecting calcium chloride solutions, the thin water glass solution injection pipes and the thin calcium chloride solution pipes are located in a sand soil foundation model, and the water glass solution and calcium chloride solution storage device comprises a water glass solution storage container and a calcium chloride solution storage container. The water glass solutions and the calcium chloride solutions can be mixed and diffused in an accelerated manner, and blockage nearby an injection port is also relieved.
Description
Technical field
The invention belongs to field of foundation treatment in Geotechnical Engineering, more particularly, to one kind can liquid based on supersonic vibration acceleration solidification
Change sand assay device and its test method.
Background technology
Water glass solution and calcium chloride solution mixing can be produced precipitated calcium silicate, this precipitated calcium silicate can reinforce liquefiable
Sand foundation.The method of the liquefiable sandy soil of waterglass solidification at present mainly has two kinds：（1）The first is single-fluid process, will water glass
Glass and calcium chloride are made into a kind of liquid injection soil body；（2）Second method is two-fluid process, and that is, in soil, alternately injection waterglass is molten
Liquid and calcium chloride solution, two kinds of liquid meet in soil and react, and generate precipitated calcium silicate.The problem of above-mentioned first method
It is easily to form blocking in fluid injection near exit；The problem of above-mentioned second method is silicic acid calcium solution and calcium chloride solution
Using insufficient, because only that part solution mixing generates precipitated calcium silicate.Water glass solution and calcium chloride solution is therefore allowed to add
Speed mixing diffusion, slows down the blocking near liquid injection port simultaneously and is particularly important.
Content of the invention
The present invention in order to solve that curing solution utilization ratio that above-mentioned prior art exists is low and liquid injection port near easily block up
The problem of plug, the invention provides one kind can allow water glass solution and calcium chloride solution accelerate mixing diffusion, slows down note simultaneously
The assay device and the test method that accelerate solidification liquefiable sandy soil based on supersonic vibration of the blocking near liquid mouth.
Technical scheme：One kind accelerates solidification liquefiable sandy soil assay device based on supersonic vibration, including vacuum
Air extractor, ultrasonic transmission device, the tubule injection device of side perforate, water glass solution and calcium chloride solution storage dress
Put, liquid collecting container and the model casing holding sand foundation model,
Described vacuum suction device includes vacuum pump and the organic plasticss thin film being laid on sand foundation model, described organic moulds
Material thin film is tightly connected with model casing, to ensure that during vacuum pump work, sand foundation model is not connected with the external world, described vacuum pump
Air in sand foundation model and liquid are taken away, guides water glass solution and calcium chloride liquid to pass through side perforate with this
Tubule injection device enters in sand foundation model；
Described ultrasonic transmission device is enclosed within the tubule injection device of side perforate, described liquid collecting container and vacuum pump
Floss hole connects；
The tubule injection device of side perforate includes the water glass solution injection tubule of some injection water glass solutions and some notes
Penetrate the calcium chloride solution injection tubule of calcium chloride solution, described water glass solution injection tubule and calcium chloride solution injection tubule position
In sandy soil foundation model；
Described water glass solution and calcium chloride solution storage device comprise two containers, respectively water glass solution storage container and
Calcium chloride solution storage container, the built-in water glass solution of described water glass solution storage container simultaneously injects tubule with water glass solution
It is connected, the built-in calcium chloride solution of described calcium chloride solution storage container is simultaneously connected with calcium chloride solution injection tubule.
Solution in two containers in the presence of vacuum pump is along the tubule injection device injection sand ground of side perforate
Basic mode type, the ultrasound wave compressional wave that ultrasonic transmission device produces simultaneously accelerates water glass solution and calcium chloride solution mixing, sand
The precipitated calcium silicate generating after being full of waterglass and calcium chloride reaction in foundation model, slows down the calcium silicates near liquid injection port simultaneously
Blocking.
Preferably, described vacuum suction device, ultrasonic transmission device, the tubule injection device of side perforate, waterglass
It is to be detachably connected between solution and calcium chloride solution storage device and liquid collecting container.
Preferably, described vacuum pump is connected with sandy soil foundation model by vacuum-pumping tube, and described vacuum-pumping tube one end connects
Vacuum pump, the other end passes through in organic plasticss thin film insertion sand foundation model；Described model casing is that cubic is transparent organic
Glass box, described transparent organic glass case is a size of：Long 250mm, wide 250mm, high 250mm.
Cubic transparent organic glass is bonded together and can closely be combined using glass cement, vacuum pump with organic
Air tight in the presence of plastic sheeting.
Preferably, described water glass solution injection tubule passes through water glass solution supply pipe and water glass solution storage container
Connect, described calcium chloride solution injection tubule is connected with calcium chloride solution storage container by calcium chloride solution supply pipe.
Preferably, described water glass solution supply pipe is noted with multiple water glass solutions respectively by a water glass solution house steward
Penetrate tubule to connect, it is thin with the injection of multiple calcium chloride solutions respectively that described calcium chloride solution supply pipe passes through monochlor(in)ate calcium solution house steward
Pipe connects.
Preferably, described ultrasonic transmission device is the circular tube shaped piezoelectric ceramics block of radial polarization, described circular tube shaped piezoelectricity
Ceramic block polarizes along pipe long axis direction.
When in liquid is by the tubule injection device injection sand of side perforate, circular tube shaped piezoelectric ceramics block is initially axially stretched
Contracting vibration produces ultrasound wave compressional wave.
Preferably, each water glass solution injection tubule and calcium chloride solution injection tubule are equipped with some lateral orifices,
All it is cased with circular tube shaped piezoelectric ceramics block below each lateral orifices.
Preferably, described water glass solution injection tubule and calcium chloride solution injection capillary space setting, and waterglass is molten
It is 300mm that liquid injects tubule and the length of calcium chloride solution injection tubule, and external diameter is 4mm, and internal diameter is 2mm, in injection tubule
Side wall opens the circular hole of a pair a diameter of 2mm as lateral orifices every 60mm；The spacing of each two tubule is 3 times of external diameters.
Preferably, described circular tube shaped piezoelectric ceramics block is two neighboring side on same injection tubule along long axis direction length
The 1/5 of pitch of holes, and circular tube shaped piezoelectric ceramics block is PZT piezoelectric ceramics, described vacuum-pumping tube and organic plasticss thin film junction
It is provided with sealing ring.
A kind of test method being accelerated solidification liquefiable sandy soil assay device based on supersonic vibration, is comprised the steps
Step 1：Place sand foundation model in model casing, then use organic plasticss diaphragm seal sand foundation model；
Step 2：Connect water glass solution storage container and water glass solution injection tubule and calcium chloride solution storage container and
Calcium chloride solution injects tubule, packages circular tube shaped piezoelectric ceramics block on each injection tubule, then inserts all injection tubules
Enter in sand foundation model；
Step 3：The suction mouth of vacuum pump is connected with sand foundation model, by the floss hole of vacuum pump with liquid collecting container even
Logical；
Step 4：Vacuum pump extracts gas and liquid in sand foundation model, and guiding water glass solution and calcium chloride solution flow into
In sand foundation model, circular tube shaped piezoelectric ceramics block produces ultrasound wave simultaneously, accelerates water glass solution and calcium chloride solution mixing
Diffusion, slows down the precipitation near injection orifice by ul-trasonic irradiation.
It is circular tube shaped piezoelectric ceramics block as preferred ultrasonic transmission device, from PZT（Lead zirconate titanate) piezoelectric ceramics.
Beneficial effects of the present invention：Method using vacuum suction guides water glass by the tubule injection device of side perforate
Glass solution and calcium chloride solution injection sand foundation model, and make water glass solution and chlorination in the presence of ultrasound wave compressional wave
Calcium liquid accelerates mixing diffusion, and effectively slows down the precipitation near injection orifice, prevents the blocking near liquid injection port, improves liquefiable
The consolidation effect of sand.
Brief description
Fig. 1 is the structural representation of the present invention；
Fig. 2 is vacuum-pumping tube and organic plasticss thin film connection diagram；
Fig. 3 is fixed on water glass solution for circular tube shaped piezoelectric ceramics block and injects the structural representation on tubule；
Fig. 4 is arrangement schematic diagram in sand model casing for the circular tube shaped piezoelectric ceramics block；
Fig. 5 is the structural representation of circular tube shaped piezoelectric ceramics block；
In figure 1. water glass solution storage container, 2. water glass solution supply pipe, 3. calcium chloride feed tube for liquid, 4. waterglass is molten
Liquid injects tubule, 5. calcium chloride solution injection tubule, 6. model casing, 7. organic plasticss thin film, 8. vacuum pump, and 9. liquid is collected and held
Device, 10. circular tube shaped piezoelectric ceramics block, 11. vacuum-pumping tubes, 12. calcium chloride solution storage containers, 13. sealing rings, 14. sides
Hole.
Specific embodiment
In order that technological means, character of innovation, reached purpose and effect that the present invention realizes are easy to understand, tie below
Conjunction is specifically illustrating, and the present invention is expanded on further.
As Figure 1-5, based on supersonic vibration accelerate solidification liquefiable sandy soil assay device, including vacuum suction device,
Ultrasonic transmission device, the tubule injection device of side perforate, water glass solution and calcium chloride solution storage device, liquid are collected
Container 9, described vacuum suction device, ultrasonic transmission device, the tubule injection device of side perforate, water glass solution and chlorination
Calcium solution storage device and liquid collecting container can dismantle connection.Described vacuum suction device is thin by vacuum pump 8, organic plasticss
Film 7 and vacuum-pumping tube 11 are constituted.Organic plasticss thin film 7 is placed below sand sample, die-filling with transparent with machine glass cube
Molding box 6 combines the effect reaching sealing, utilizes vacuum-pumping tube 11 to connect sand sample and using liquid discharging tube connection by vacuum pump 8
Liquid collecting container 9.The water glass solution injection that the tubule injection device of described side perforate comprises to inject water glass solution is thin
Calcium chloride solution injection tubule 5, water glass solution injection tubule 4 and the calcium chloride liquid infusion of pipe 4 and injection calcium chloride solution
Tubule 5 inserts sand sample.
It is equipped with some lateral orifices 14 on each water glass solution injection tubule 4 and calcium chloride solution injection tubule 5（Injection
Hole）, below each lateral orifices 14, all it is cased with circular tube shaped piezoelectric ceramics block 10.
Water glass solution and calcium chloride solution storage device comprise water glass solution storage container 1, calcium chloride solution storage
Container 12, water glass solution supply pipe 2 and calcium chloride solution supply pipe 3.The model casing 6 made in transparent organic glass and organic
In the closing space of plastic sheeting 7 composition, during the liquids and gases in vacuum pump 8 extraction model case 6, using big
Liquid in water glass solution and calcium chloride solution storage device is injected tubule 4 by water glass solution to air pressure and calcium chloride is molten
Liquid injection tubule 5 injection sand sample, produces ultrasound wave compressional wave by ultrasonic transmission device simultaneously and accelerates water glass solution and chlorine
Change calcium solution mixing diffusion, and slow down the precipitation near injection orifice.Vacuum-pumping tube 11 is provided with organic plasticss thin film 7 junction
Sealing ring 13.
Accelerate the process of the test method of solidification liquefiable sandy soil assay device as follows based on supersonic vibration：
Step 1：Sand is placed in transparent organic glass model casing 6 as described in Figure 1（Fujian iso standard sand）, concrete steps
As follows：It is first according to sand rain method sand loading, every layer of sand thickness 50mm, sand is attached to 200mm and completes, and then uses organic plasticss thin film
7 sealing sand samples, tightly air tight to ensure to seal around sand；
Step 2：By water glass solution supply pipe 2 as described in Figure 1 and calcium chloride feed tube for liquid 3, connect water glass solution
And calcium chloride solution storage device 1 and water glass solution injection tubule 4 and calcium chloride liquid infusion tubule 5, in each injection
Circular tube shaped piezoelectric ceramics block is packaged on tubule, then water glass solution is injected tubule 4 and calcium chloride solution injection tubule 5 inserts
Sand sample；
Step 3：Vacuum pump 1 is started working, empty with the closing of organic plasticss thin film 7 composition by extracting transparent organic glass case 6
Between in gas and liquid, simultaneously circular tube shaped piezoelectric ceramics block 10 axially contract vibration produce ultrasound wave, water glass solution and
Calcium chloride solution storage flows into sand and accelerates mixing diffusion in the presence of ultrasound wave compressional wave, is slowed down by ul-trasonic irradiation simultaneously
Precipitation near injection orifice.
Claims (10)
1. a kind of solidification liquefiable sandy soil assay device is accelerated based on supersonic vibration it is characterised in that：It includes vacuum suction dress
Put, ultrasonic transmission device, the tubule injection device of side perforate, water glass solution and calcium chloride solution storage device, liquid
Collecting container and the model casing holding sand foundation model,
Described vacuum suction device includes vacuum pump and the organic plasticss thin film being laid on sand foundation model, described organic moulds
Material thin film is tightly connected with model casing, to ensure that during vacuum pump work, sand foundation model is not connected with the external world, described vacuum pump
Air in sand foundation model and liquid are taken away, guides water glass solution and calcium chloride liquid to pass through side perforate with this
Tubule injection device enters in sand foundation model；
Described ultrasonic transmission device is enclosed within the tubule injection device of side perforate, described liquid collecting container and vacuum pump
Floss hole connects；
The tubule injection device of side perforate includes the water glass solution injection tubule of some injection water glass solutions and some notes
Penetrate the calcium chloride solution injection tubule of calcium chloride solution, described water glass solution injection tubule and calcium chloride solution injection tubule position
In sandy soil foundation model；
Described water glass solution and calcium chloride solution storage device comprise two containers, respectively water glass solution storage container and
Calcium chloride solution storage container, the built-in water glass solution of described water glass solution storage container simultaneously injects tubule with water glass solution
It is connected, the built-in calcium chloride solution of described calcium chloride solution storage container is simultaneously connected with calcium chloride solution injection tubule.
2. one kind according to claim 1 accelerates solidification liquefiable sandy soil assay device based on supersonic vibration, and its feature exists
In：Described vacuum suction device, ultrasonic transmission device, the tubule injection device of side perforate, water glass solution and calcium chloride
It is to be detachably connected between solution storage device and liquid collecting container.
3. one kind according to claim 1 accelerates solidification liquefiable sandy soil assay device based on supersonic vibration, and its feature exists
In：Described vacuum pump is connected with sandy soil foundation model by vacuum-pumping tube, and described vacuum-pumping tube one end connects vacuum pump, the other end
Through in organic plasticss thin film insertion sand foundation model；Described model casing is cubic transparent organic glass case, described
Bright lucite case is a size of：Long 250mm, wide 250mm, high 250mm.
4. one kind according to claim 1 accelerates solidification liquefiable sandy soil assay device based on supersonic vibration, and its feature exists
In：Described water glass solution injection tubule is connected with water glass solution storage container by water glass solution supply pipe, described chlorine
Change calcium solution injection tubule to be connected with calcium chloride solution storage container by calcium chloride solution supply pipe.
5. one kind according to claim 4 accelerates solidification liquefiable sandy soil assay device based on supersonic vibration, and its feature exists
In：Described water glass solution supply pipe is passed through a water glass solution house steward and is connected with multiple water glass solutions injection tubule respectively,
Described calcium chloride solution supply pipe is passed through monochlor(in)ate calcium solution house steward and is connected with multiple calcium chloride solutions injection tubule respectively.
6. one kind according to claim 3 accelerates solidification liquefiable sandy soil assay device based on supersonic vibration, and its feature exists
In：Described ultrasonic transmission device is the circular tube shaped piezoelectric ceramics block of radial polarization, and described circular tube shaped piezoelectric ceramics block is along pipe
Long axis direction polarizes.
7. one kind according to claim 6 accelerates solidification liquefiable sandy soil assay device based on supersonic vibration, and its feature exists
In：It is equipped with some lateral orifices, under each lateral orifices on each water glass solution injection tubule and calcium chloride solution injection tubule
Fang Jun is cased with circular tube shaped piezoelectric ceramics block.
8. one kind according to claim 7 accelerates solidification liquefiable sandy soil assay device based on supersonic vibration, and its feature exists
In：Described water glass solution injection tubule and calcium chloride solution injection capillary space setting, and water glass solution injection tubule and
The length that calcium chloride solution injects tubule is 300mm, and external diameter is 4mm, and internal diameter is 2mm, is injecting the side wall of tubule every 60mm
The circular hole opening a pair a diameter of 2mm is as lateral orifices；The spacing of each two tubule is 3 times of external diameters.
9. one kind according to claim 6 accelerates solidification liquefiable sandy soil assay device based on supersonic vibration, and its feature exists
In：1/5 that described circular tube shaped piezoelectric ceramics block is two neighboring side pitch of holes on same injection tubule along long axis direction length,
And circular tube shaped piezoelectric ceramics block is PZT piezoelectric ceramics, described vacuum-pumping tube and organic plasticss thin film junction are provided with sealing ring.
10. a kind of test method accelerating solidification liquefiable sandy soil assay device based on supersonic vibration as claimed in claim 1,
It is characterized in that：It comprises the steps
Step 1：Place sand foundation model in model casing, then use organic plasticss diaphragm seal sand foundation model；
Step 2：Connect water glass solution storage container and water glass solution injection tubule and calcium chloride solution storage container and
Calcium chloride solution injects tubule, packages circular tube shaped piezoelectric ceramics block on each injection tubule, then inserts all injection tubules
Enter in sand foundation model；
Step 3：The suction mouth of vacuum pump is connected with sand foundation model, by the floss hole of vacuum pump with liquid collecting container even
Logical；
Step 4：Vacuum pump extracts gas and liquid in sand foundation model, and guiding water glass solution and calcium chloride solution flow into
In sand foundation model, circular tube shaped piezoelectric ceramics block produces ultrasound wave simultaneously, accelerates water glass solution and calcium chloride solution mixing
Diffusion, slows down the precipitation near injection orifice by ul-trasonic irradiation.
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