CN105486840B - A kind of consolidation infiltration Collaborative experiment device - Google Patents

A kind of consolidation infiltration Collaborative experiment device Download PDF

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Publication number
CN105486840B
CN105486840B CN201511005165.9A CN201511005165A CN105486840B CN 105486840 B CN105486840 B CN 105486840B CN 201511005165 A CN201511005165 A CN 201511005165A CN 105486840 B CN105486840 B CN 105486840B
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CN
China
Prior art keywords
pressure
pressurization
cover
balancing gate
gate pit
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CN201511005165.9A
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Chinese (zh)
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CN105486840A (en
Inventor
魏厚振
何建乔
况辉
孟庆山
韦昌富
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中国科学院武汉岩土力学研究所
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Priority to CN201511005165.9A priority Critical patent/CN105486840B/en
Publication of CN105486840A publication Critical patent/CN105486840A/en
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Publication of CN105486840B publication Critical patent/CN105486840B/en

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/24Earth materials
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00Investigating characteristics of particles; Investigating permeability, pore-volume, or surface-area of porous materials
    • G01N15/08Investigating permeability, pore-volume, or surface area of porous materials

Abstract

The present invention relates to a kind of consolidations to permeate Collaborative experiment device, including:Pedestal, balancing gate pit, pressure-applying unit, filtration module and numerical value acquisition system.Balancing gate pit is fixed on the base;The top slide of balancing gate pit is provided with pressurization upper cover;Pressure-applying unit is connect with pressurization upper cover, can apply setting pressure to pressurization upper cover.Filtration module includes:Overflow pipe, regulation pipe and more pressure-measuring pipes;Balancing gate pit upper end is provided with gap, and overflow pipe connects gap;Regulation pipe connects discharge outlet;Balancing gate pit is vertically provided with multiple pressure taps, and more pressure-measuring pipes are separately connected multiple pressure taps.Numerical value acquisition system includes:Pressure transmitter, displacement sensor and control unit;Control unit is connect with pressure transmitter and displacement sensor, to receive pressure information and displacement information.Consolidation infiltration Collaborative experiment device can carry out coarse-grained soil consolidation infiltration Combined Trials, the bulky grain soil true stress state of accurate simulation different buried depth in laboratory under the different degrees of consolidation.

Description

A kind of consolidation infiltration Collaborative experiment device
Technical field
The present invention relates to Geotechnical Engineering field, more particularly to a kind of consolidation permeates Collaborative experiment device.
Background technology
With the development of national economy, in Maritime Silk Road construction like a raging fire, the infiltration geotechnique's examination of traditional consolidation It tests equipment and provides effective technical parameter far to coastal engineering and engineering on an island and hydraulic engineering.Routine consolidation test at Fruit is can meet general requirement, but traditional consolidometer cannot evaluate the permeance property of sample.Conventional permeability test be Do not have it is axially loaded under conditions of complete, be only applicable to the soil sample situation of earth's surface, simulate deep soil (sand) sample with it and tried It tests, the infiltration coefficient measured does not conform to the actual conditions, and since deep soil is acted on by crustal stress, the hole between soil and soil is smaller, seepage flow Channel is small, therefore the infiltration coefficient of infiltration layer soil is small.
It, could very when the numerous studies of domestic and foreign scholars show that barrel bore is more than 10 times of sample maximum particle diameter in experiment The dimensional effect of good elimination particle.These, which cannot all meet, is related to coarse-grained soil, calcareous sand, the rock-fill dams of coral sand, coastal shield The requirement of the engineerings such as slope project and island.Since specimen size is big, the axial compressive force needed is big, and existing pressure structure is difficult to apply It is added to corresponding pressure.
When consolidation infiltration joint instrument in the prior art tests bulky grain native (sand), there can be larger size Effect, there are large error, can not accurate simulation different buried depth bulky grain native (sand) true stress state.
Invention content
A kind of consolidation provided by the present application permeates Collaborative experiment device, solves or partly solves in the prior art solid When knot infiltration joint instrument tests bulky grain soil, there can be larger dimensional effect, there are large errors, can not be accurate The technical issues of simulating the true stress state of the bulky grain soil of different buried depth, conventional consolidation examination can not only be carried out by realizing It tests, conventional permeability test, fine grained consolidation infiltration Combined Trials, and coarse-grained soil under the different degrees of consolidation can be carried out and consolidated Permeate Combined Trials, the technique effect of the bulky grain soil true stress state of accurate simulation different buried depth in laboratory.
This application provides a kind of consolidations to permeate Collaborative experiment device, including:
Pedestal, offers discharge outlet and a plurality of first groove, and a plurality of first groove is connected to the discharge outlet;
Balancing gate pit is fixed on the base;It is cavity inside the balancing gate pit, top slide is provided with pressurization upper cover; The pressurization upper cover offers water inlet and a plurality of second groove, and a plurality of second groove is connected to the water inlet;
Pressure-applying unit is connect with the pressurization upper cover, can apply setting pressure to the pressurization upper cover;
Filtration module, the filtration module include:Overflow pipe, regulation pipe and more pressure-measuring pipes;The balancing gate pit upper end is set It is equipped with gap, the overflow pipe connects the gap;The regulation pipe connects the discharge outlet;The balancing gate pit is along vertical Direction is provided with multiple pressure taps, and the more pressure-measuring pipes are separately connected the multiple pressure tap;
Numerical value acquisition system, the numerical value acquisition system include:Pressure transmitter, displacement sensor and control unit;Institute State the pressure that pressure transmitter applies soil sample for detecting the pressurization upper cover;Institute's displacement sensors are for detecting described add Press the shift length of upper cover;Described control unit is connect with the pressure transmitter and institute's displacement sensors;
Wherein, when carrying out consolidation permeability test, the soil sample is filled in the cavity.
Preferably, the balancing gate pit is the cylinder of hollow-core construction;
The pressurization upper cover is Circular plate structure, and first annular slot is offered on the circumference of the pressurization upper cover, described first The first sealing ring is provided in annular groove;
The cylinder is bolted to connection with the pedestal;The position that the pedestal corresponds to the cylinder offers Second ring slot is provided with the second sealing ring in second annular groove;
Wherein, first sealing ring and the second sealing ring are by the cavities seals inside the balancing gate pit.
Preferably, the water inlet is located at the center of the plectane;
A plurality of second groove includes:The annular groove of a plurality of concyclic heart and the strip groove of a plurality of radial arrangement;Institute Annular groove is stated to be connected to the water inlet by the strip groove;
The discharge outlet is located at the center location of second annular groove;
A plurality of first groove includes:The annular groove of a plurality of concyclic heart and the strip groove of a plurality of radial arrangement;Institute Annular groove is stated to be connected to the discharge outlet by the strip groove.
Preferably, the pressure-applying unit includes:
Primary lever, one end are fixed on the ground by the first column;
Second lever is fixed on the ground by the second column;The second lever connects the level-one by hinge bar The other end of lever;
Spiral jointing, top connect the primary lever, and tie point is close to first column;The spiral connection The bottom of connector is connected through a screw thread with the pressurization upper cover, makes the pressurization upper cover phase by turning the spiral jointing The balancing gate pit is slid;
Pressurize pallet, hangs the one end for being located at the second lever;
Counterweight pallet hangs the other end for being located at the second lever;
Wherein, the tie point of the second lever and second column be located at the pressurization pallet and counterweight pallet it Between, close to the counterweight pallet;The tie point of the hinge bar and the second lever is located at second column and adds with described Between pressing pallet, close to second column.
Preferably, the Collaborative experiment device further includes:
Two pieces of metal perforated plates, are separately positioned between the soil sample and the pedestal and the pressurization upper cover and the soil sample Between;
Strainer is arranged between the soil sample and the pedestal, is located at the top of the metal perforated plate;
Wherein, the aperture of the metal perforated plate is more than the aperture of the strainer.
Preferably, the Collaborative experiment device includes 3 pressure-measuring pipes;
The balancing gate pit is vertically provided with 3 pressure taps, and 3 pressure taps are equidistantly arranged vertically;Described 3 Root pressure-measuring pipe is separately connected 3 pressure taps.
Preferably, the Collaborative experiment device further includes:
Water supply bottle is fixed on the top of the balancing gate pit;
Feed pipe, one end are connect with the water supply bottle, to provide experimental water;
Tongs are arranged on the feed pipe.
Preferably, the Collaborative experiment device further includes:
Temperature test component is arranged in the pressurization on lid;
Graduated cylinder is arranged on the base, to measure the seepage flow water for passing through the soil sample;
Preferably, the top center of the pressurization upper cover is provided with iron plate, institute's displacement sensors are fixed on the iron On piece;
Described control unit includes:Dynamic test system and computer;The dynamic test system and the pressure inverting Device, institute's displacement sensors and computer connection.
Preferably, the Collaborative experiment device further includes:
Sliding support, the sliding support include supporting rod and horizon bar;The supporting rod is fixed on the base;Institute Horizon bar is stated to be slidably connected with the supporting rod;
The regulation pipe, which is hung, to be located on the horizon bar;
Wherein, by sliding the horizon bar, to change the vertical height of the regulation pipe.
One or more technical solutions provided herein, have at least the following technical effects or advantages:
It is adopted as a result of the uncrossed pedestal of guarantee seepage velocity, balancing gate pit, pressure-applying unit, filtration module and numerical value The Collaborative experiment device of collecting system can rationally carry out stress loading and infiltration coupling test, to buried big in laboratory Grain soil carries out accurate simulation test, and to further investigate the infiltration of buried bulky grain soil, consolidation coupling provides technology and protects Card and support will effectively push the deep development of the research.In this way, efficiently solving consolidation infiltration connection in the prior art When conjunction instrument tests bulky grain soil, there can be larger dimensional effect, there are large errors, can not accurate simulation difference The technical issues of true stress state of the bulky grain soil of buried depth, realizes and can not only carry out routine consolidation test, routine is oozed Experiment, fine grained consolidation infiltration Combined Trials thoroughly, and coarse-grained soil consolidation infiltration joint under the different degrees of consolidation can be carried out Experiment, the technique effect of the bulky grain soil true stress state of accurate simulation different buried depth in laboratory.
Description of the drawings
Fig. 1 is the configuration diagram that consolidation provided in an embodiment of the present invention permeates Collaborative experiment device;
Fig. 2 is the configuration diagram of pressure-applying unit in Fig. 1;
Fig. 3 is the configuration diagram of pressurization upper cover in Fig. 1;
Fig. 4 is the cross-sectional schematic of pressurization upper cover in Fig. 1;
Fig. 5 is the configuration diagram of pedestal in Fig. 1;
Fig. 6 is the cross-sectional schematic of pedestal in Fig. 1;
Fig. 7 is the configuration diagram of strainer in Fig. 1.
(component that each label represents in diagram is followed successively by:1 pedestal, 2 strainers, 3 metal perforated plates, 4 balancing gate pits, 5 pressure-measuring pipes, 6 Supporting rod, 7 regulation pipes, 8 pressurization upper covers, 9 displacement sensors, 10 temperature test components, 11 tongs, 12 feed pipes, 13 are supplied water Bottle, 14 measuring cups, 15 gaps, 16 soil samples, 17 sealing rings, 18 bolts, 19 second levers, 20 spiral jointings, 21 pressurization supports Disk, 22 overflow pipes, 23 horizon bars, 24 pressure transmitters, 25 dynamic test systems, 26 computers, 27 counterweight pallets, 28 water inlets Mouth, 29 discharge outlet)
Specific implementation mode
A kind of consolidation provided by the embodiments of the present application permeates Collaborative experiment device, solves or part solves the prior art In consolidation infiltration joint instrument when testing bulky grain soil, can have larger dimensional effect, there are large error, nothings The technical issues of true stress state of the bulky grain soil of method accurate simulation different buried depth, by using pedestal, balancing gate pit, pressurization The Collaborative experiment device that component, filtration module and numerical value acquisition system are constituted, realize can not only carry out routine consolidation test, Conventional permeability test, fine grained consolidation infiltration Combined Trials, and coarse-grained soil consolidation under the different degrees of consolidation can be carried out and oozed Saturating Combined Trials, the technique effect of the bulky grain soil true stress state of accurate simulation different buried depth in laboratory.
Referring to attached drawing 1, this application provides a kind of consolidations to permeate Collaborative experiment device, including:Pedestal 1, adds balancing gate pit 4 Press component, filtration module and numerical value acquisition system.
Balancing gate pit 4 is fixed on pedestal 1;Pedestal 1 offers discharge outlet 29 and a plurality of first groove, and a plurality of first groove connects Logical discharge outlet 29;4 inside of balancing gate pit is that soil sample 16 is filled in cavity by cavity when carrying out consolidation permeability test.Balancing gate pit 4 top slide is provided with pressurization upper cover 8;Pressurization upper cover 8 offers water inlet 28 and a plurality of second groove, a plurality of second groove It is connected to water inlet 28;The first groove is opened up on pedestal 1, both forms plurality of passages, to ensure water penetration to not increasing when pedestal 1 Add penetration length, it is ensured that can accurately calculate the density of soil sample 16.
Pressure-applying unit is connect with pressurization upper cover 8, can apply setting pressure to pressurization upper cover 8.
Filtration module includes:Overflow pipe 22, regulation pipe 7 and more pressure-measuring pipes 5;4 upper end of balancing gate pit is provided with gap 15, Overflow pipe 22 connects gap 15;Regulation pipe 7 connects discharge outlet 29;Balancing gate pit 4 is vertically provided with multiple pressure taps, more Root pressure-measuring pipe 5 is separately connected multiple pressure taps.
Numerical value acquisition system includes:Pressure transmitter 24, displacement sensor 9 and control unit;Pressure transmitter 24 is arranged Between pressurization upper cover 8 and metal perforated plate 3, the pressure applied to soil sample 16 for detecting pressurization upper cover 8 generates pressure information; Displacement sensor 9 is used to detect the shift length of pressurization upper cover 8, generates displacement information;Control unit and pressure transmitter 24 and Displacement sensor 9 connects, to receive pressure information and displacement information.
The Collaborative experiment device can not only carry out routine consolidation test, conventional permeability test, fine grained consolidation infiltration connection Close experiment, and bulky grain soil consolidation infiltration Combined Trials can be carried out under the different degrees of consolidation, can to same soil sample 16 into Compression test, the creep test gone under the conditions of having lateral spacing, and consolidation test at ebb tide can be simulated.Apparatus structure letter List, definite principle, easily operated, precision is high, stability is good, requires installation tester relatively low.
Further, referring to attached drawing 1, balancing gate pit 4 is the cylinder of hollow-core construction;Pressurization upper cover 8 is Circular plate structure, in pressurization First annular slot is offered on the circumference of lid 8, and the first sealing ring is provided in first annular slot;Cylinder passes through bolt with pedestal 1 18 are fixedly connected;The position that pedestal 1 corresponds to cylinder offers the second annular groove, and the second sealing ring is provided in the second annular groove; Wherein, the first sealing ring and the second sealing ring are by the cavities seals inside balancing gate pit 4.
Further, referring to attached drawing 3 and 4, water inlet 28 is located at the center of plectane;A plurality of second groove includes:It is more The annular groove of the concyclic heart of item and the strip groove of a plurality of radial arrangement;Annular groove is connected to by strip groove with water inlet. Referring to attached Figures 5 and 6, discharge outlet 29 is located at the center location of the second annular groove;A plurality of first groove includes:The ring of a plurality of concyclic heart The strip groove of connected in star and a plurality of radial arrangement;Annular groove is connected to by strip groove with discharge outlet 29.
Further, referring to attached drawing 2, pressure-applying unit includes:Primary lever, spiral jointing 20, adds second lever 19 Press pallet 21 and counterweight pallet 27.One end of primary lever is fixed on the ground by the first column;Second lever 19 passes through Two columns fix on the ground;Second lever 19 connects the other end of primary lever by hinge bar;Spiral jointing 20 Top connects primary lever, and tie point is close to the first column;The bottom of spiral jointing 20 is connected with pressurization upper cover 8 by screw thread It connects, so that 8 relative pressure room 4 of pressurization upper cover is slid by turning spiral jointing 20;Pressurization pallet 21, which is hung, is located at second lever 19 one end;Counterweight pallet 27 hangs the other end for being located at second lever 19;Upper cover 8 of pressurizeing connects with spiral jointing 20 for screw thread It connects, connection height can be adjusted, it is parallel with second lever 19 to adjust primary lever in pressure-applying unit.
Wherein, the tie point of second lever 19 and the second column is located between pressurization pallet 21 and counterweight pallet 27, close Counterweight pallet 27;The tie point of hinge bar and second lever 19 is located between the second column and pressurization pallet 21, vertical close to second Column.Counterweight pallet 27 is for placing weights, to balance primary lever, second lever 19, pressurization pallet 21 and pressurization group The frictional force of part improves pressurization precision.The second lever structure that the pressure-applying unit is 30 times, the structure have greatly saved sky Between, and high magnification numbe lever can be generated, maximum can provide 7200kg pressure, and the pressure-applying unit is simple to operation.
Further, referring to attached drawing 1 and 7, which further includes:Two pieces of metal perforated plates 3 and strainer 2.Two pieces Metal perforated plate 3 is separately positioned between soil sample 16 and pedestal 1 and pressurizes between upper cover 8 and soil sample 16;Strainer 2 is arranged in soil sample 16 Between pedestal 1, it is located at the top of metal perforated plate 3, structure is referring to attached drawing 7;Wherein, the aperture of metal perforated plate 3 is more than strainer 2 Aperture.
Since the pressure of application is big, 16 size of soil sample is big, be easier to stress concentration occur, and considers to save, aspect Principle so permeable stone cannot be used, therefore considers that design metal perforated plate 3 replaces permeable stone.Metal perforated plate 3 is to prevent soil sample 16 Metab drainage channel is filled, seepage velocity is hindered.Testing crew when the setting effective short form test of metal perforated plate 3 simultaneously Determine specimen height and water penetration height.Effectively reduce test error, it is ensured that test accuracy.By 1 center of told cylindrical base Place is equipped with opening greatly and channel is more, and strainer 2 is devised to ensure that rigidity reaches requirement.
Further, referring to attached drawing 1, Collaborative experiment device includes 3 pressure-measuring pipes 5;Balancing gate pit 4 is vertically provided with 3 pressure taps, 3 pressure taps are equidistantly arranged vertically;3 pressure-measuring pipes 5 are separately connected 3 pressure taps.
Further, referring to attached drawing 1, Collaborative experiment device further includes:Water supply bottle 13, feed pipe 12 and tongs 11.For Water bottle 13 is fixed on the top of balancing gate pit 4;One end of feed pipe 12 is connect with water supply bottle 13, to provide experimental water;Tongs 11 are arranged on feed pipe 12.
Further, Collaborative experiment device further includes:Temperature test component 10 and graduated cylinder 14.Temperature test component 10 is arranged In pressurization upper cover 8, preferably, selecting thermometer.Graduated cylinder 14 is arranged on pedestal 1, to measure the seepage flow by soil sample 16 Water.
Further, the top center of pressurization upper cover 8 is provided with iron plate, and displacement sensor 9 is fixed on iron plate;In pressurization There are one iron plates on lid 8 calculates experiment consolidation height, because in iron plate and pressurization upper cover 8 for placing displacement sensor 9 The heart connects, so the data that displacement sensor 9 detects are more accurate.Control unit includes:Dynamic test system 25 and computer 26;Dynamic test system 25 is connect with pressure transmitter 24, displacement sensor 9 and computer 26.
Further, which further includes:Sliding support, sliding support include supporting rod 6 and horizon bar 23; Supporting rod 6 is fixed on pedestal 1;Horizon bar 23 is slidably connected with supporting rod 6;Regulation pipe 7, which is hung, to be located on horizon bar 23;Wherein, By sliding horizon bar 23, to change the vertical height of regulation pipe 7.
Below by operation principle and experimental procedure to the structure of consolidation infiltration Collaborative experiment device provided by the present application and Its operation characteristic is described in detail:
Operation principle:This device belongs to constant head osmosis system, is reached according to being followed when infiltration flow is laminar state in soil Western law v=ki, at work, soil sample 16 is ensured that it has the flow of certain head difference to pass through to instrument by axial stress, note Record the infiltration capacity by soil sample 16 in certain a period of time.Based on this consolidation system is ether sand base single shaft consolidation theory.Due to External load function, water and air are squeezed out from hole, and mutual jam-packed between native skeleton particle leads to soil body compressive deformation, recording Numerical value acquisition system acquires compression deformation while infiltration capacity.When assembling instrument, leak, gas leakage are prevented by sealing ring, led to Cross the friction for reducing pressurization upper cover 8 and metallic cylinder inner wall in metallic cylinder coating butter or vaseline etc. (lubricant).Pass through Metal perforated plate 3 ensures that seepage channel is unimpeded, and can effective Control Assay density.
Apply xial feed to soil sample by pressure-applying unit, carries out saturation bulky grain soil consolidation test, tested by dynamic System 25 acquires axial force and sample settling amount;After pressure-applying unit applies xial feed to soil sample 16, under the different degrees of consolidation, It is provided by water supply bottle 13 and stablizes head difference, then survey the seepage discharge for remembering each 16 height of soil sample by graduated cylinder 14, complete consolidation infiltration Combined Trials.
Consolidation infiltration joint is carried out in fact to the soil sample 16 of diameter 300mm, height 300mm, the largest particles grain size 30mm below It tests, experimental procedure includes:
S1, connection pressurization upper cover 8 and the spiral jointing 20 on pressure-applying unit.Pedestal 1 and balancing gate pit 4 are fixed, Check at each pipe joint, pedestal 1 and cylinder junction whether leak.Metal perforated plate 3, strainer 2 and geotextiles are put into successively Pedestal 1.Pressure-measuring pipe 5 is installed.
S2, connection regulation pipe 7 and feed pipe 12 close sealing after the gas discharge in 1 pipeline of pedestal, in metal perforated plate 3 Folder 11.
S3, in the above inner wall coating butters of 4 height 250mm of balancing gate pit or vaseline, the sealing of pressurization upper cover 8 can be reduced The friction of circle 17 and cylinder inner wall.
S4, it takes representative sand as soil sample 16, and measures its moisture content, soil sample 16 is divided into 10-15 layers of loading cylinder, Actual arrival certain height is hit with ramming device, to control void ratio.
After the completion of S5, every layer of examination sample compacting, the tongs 11 on feed pipe 12 are opened, it is flat that water surface elevation rises to soil sample 16 Tongs 11 are closed when neat.After successively filling soil sample 16 according to above-mentioned steps, then geotextiles and metal perforated plate 3 are put successively.Survey metal aperture Plate 3 calculates 16 height of soil sample to the height of cylinder top.
S6, pressurization upper cover 8 is adjusted, it is made just to be contacted with metal perforated plate 3, and add counterweight on counterweight pallet 27, used It is parallel that horizon rule adjusts second lever 19.Keep pressurization upper cover 8 and the full contact of metal perforated plate 3, metal perforated plate 3 and soil sample 16 abundant Contact.
S7, installation displacement sensor 9.Crack tongs 11, until water is overflowed from gap 15.
S8, check whether each piezometric level is consistent with 15 water level of gap, when pressure-measuring pipe 5 is different from 15 water level of gap When, it is to adjust 5 water level of pressure-measuring pipe with water suction ball because instrument has the possibility of gas collection or gas leakage, until flat with 15 water level of gap Together.
S9, regulation pipe 7 is increased to 15 water level of gap or more, then separation adjusting pipe 7 and feed pipe 12, opens sealing Folder 11, feed pipe 12 is put into cylinder, is made in water injection cylinder, is added counterweight according to required loading stress, adds in counterweight pallet 27 Upper counterweight keeps primary lever parallel with second lever 19, starts to acquire displacement sensor 9 and 24 data of pressure transmitter.Apply Following time sequencing is preferably used to survey note after per first class pressure.Time be 6s, 15s, 1min, 2min15s, 4min, 6min15s, 9min, 12min15s、16min、20min15s、5min、30min15s、36min、42min15s、49min、64min、100min、 200min, 400min, 23h, for 24 hours to stablize until.
S10, the top 1/3 that regulation pipe is down to soil sample 16 are highly located, and form water level official post water and penetrate into soil sample 16, pass through tune Pipe 7 is saved to flow out.Tongs 11 are adjusted, so that the water into cylinder is slightly larger than the water that gap 15 is discharged, keeps water level in cylinder Stablize.After 5 stable level of pressure-measuring pipe, 5 water level of pressure-measuring pipe is recorded, and calculate the water-head between each pressure-measuring pipe 5.Safety is fixed time Record exudation water, and the water temperature of water inlet 28 is measured, it is averaged.
S11, reduce regulation pipe 7 to the middle part of soil sample 16 and lower part 1/3 at, repeat the 10th step, measure exudation water and Water temperature.
One or more technical solutions provided herein, have at least the following technical effects or advantages:
As a result of the uncrossed pedestal 1 of guarantee seepage velocity, balancing gate pit 4, pressure-applying unit, filtration module and numerical value The Collaborative experiment device of acquisition system can rationally carry out stress loading and infiltration coupling test, ensure that Accurate Determining adds in stress Carry, have lateral spacing with the relationship under axial drainage condition, deforming (void ratio) and stress, deformation and the relationship of time and stress, ooze Saturating coefficient, the relationship with time three, so the accurate unit settling amount for calculating bulky grain soil, the compressed coefficient, cake compressibility, The indexs such as infiltration coefficient ensure that the experiment can more realistically reflect engineering reality, such as roadbed before and after rainy season, the draining on basis and heavy Situation drops, offshore engineering and engineering on an island foundation drainage situation when tide.It is oozed in this way, efficiently solving consolidation in the prior art When joint instrument tests bulky grain soil thoroughly, there can be larger dimensional effect, there are large errors, can not accurate simulation The technical issues of true stress state of the bulky grain soil of different buried depth, realize can not only carry out routine consolidation test, often Permeability test, fine grained consolidation infiltration Combined Trials are advised, and coarse-grained soil consolidation infiltration under the different degrees of consolidation can be carried out Combined Trials, the technique effect of the bulky grain soil true stress state of accurate simulation different buried depth in laboratory.
Above-described specific implementation mode has carried out further the purpose of the present invention, technical solution and advantageous effect It is described in detail, it should be understood that the foregoing is merely the specific implementation mode of the present invention, is not limited to this hair Bright, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should be included in the present invention Protection domain within.

Claims (6)

1. a kind of consolidation permeates Collaborative experiment device, which is characterized in that the Collaborative experiment device includes:
Pedestal, offers discharge outlet and a plurality of first groove, and a plurality of first groove is connected to the discharge outlet;
Balancing gate pit is fixed on the base;It is cavity inside the balancing gate pit, top slide is provided with pressurization upper cover;It is described Pressurization upper cover offers water inlet and a plurality of second groove, and a plurality of second groove is connected to the water inlet;The balancing gate pit For the cylinder of hollow-core construction;The pressurization upper cover is Circular plate structure, and first annular slot is offered on the circumference of the pressurization upper cover, It is provided with the first sealing ring in the first annular slot;The cylinder is bolted to connection with the pedestal;The pedestal The position of the corresponding cylinder offers the second annular groove, and the second sealing ring is provided in second annular groove;Wherein, described First sealing ring and the second sealing ring are by the cavities seals inside the balancing gate pit;The water inlet is located at the center of the plectane Position;A plurality of second groove includes:The annular groove of a plurality of concyclic heart and the strip groove of a plurality of radial arrangement;The ring Connected in star is connected to by the strip groove with the water inlet;The discharge outlet is located at the center of circle position of second annular groove It sets;A plurality of first groove includes:The annular groove of a plurality of concyclic heart and the strip groove of a plurality of radial arrangement;The annular Groove is connected to by the strip groove with the discharge outlet;Pressure-applying unit is connect with the pressurization upper cover, can be to the pressurization Upper cover applies setting pressure;
Filtration module, the filtration module include:Overflow pipe, regulation pipe and more pressure-measuring pipes;The balancing gate pit upper end is provided with Gap, the overflow pipe connect the gap;The regulation pipe connects the discharge outlet;The balancing gate pit is vertically Multiple pressure taps are provided with, the more pressure-measuring pipes are separately connected the multiple pressure tap;
Numerical value acquisition system, the numerical value acquisition system include:Pressure transmitter, displacement sensor and control unit;The pressure Power transmitter is used to detect the pressure that the pressurization upper cover applies soil sample;Institute's displacement sensors are for detecting the pressurization The shift length of lid;Described control unit is connect with the pressure transmitter and institute's displacement sensors;
The Collaborative experiment device further includes:Water supply bottle is fixed on the top of the balancing gate pit;Feed pipe, one end and the confession Water bottle connects, to provide experimental water;Tongs are arranged on the feed pipe;
The Collaborative experiment device further includes:Sliding support, the sliding support include supporting rod and horizon bar;The supporting rod It fixes on the base;The horizon bar is slidably connected with the supporting rod;The regulation pipe, which is hung, to be located on the horizon bar; Wherein, by sliding the horizon bar, to change the vertical height of the regulation pipe;
Wherein, when carrying out consolidation permeability test, the soil sample is filled in the cavity.
2. Collaborative experiment device as described in claim 1, which is characterized in that the pressure-applying unit includes:
Primary lever, one end are fixed on the ground by the first column;
Second lever is fixed on the ground by the second column;The second lever connects the primary lever by hinge bar The other end;
Spiral jointing, top connect the primary lever, and tie point is close to first column;The spiral jointing Bottom be connected through a screw thread with the pressurization upper cover, make the pressurization upper cover with respect to institute by turning the spiral jointing State balancing gate pit's sliding;
Pressurize pallet, hangs the one end for being located at the second lever;
Counterweight pallet hangs the other end for being located at the second lever;
Wherein, the tie point of the second lever and second column leans between the pressurization pallet and counterweight pallet The nearly counterweight pallet;The tie point of the hinge bar and the second lever is located at second column and the pressurization pallet Between, close to second column.
3. Collaborative experiment device as described in claim 1, which is characterized in that the Collaborative experiment device further includes:
Two pieces of metal perforated plates, be separately positioned between the soil sample and the pedestal and the pressurization upper cover and the soil sample it Between;
Strainer is arranged between the soil sample and the pedestal, is located at the top of the metal perforated plate;
Wherein, the aperture of the metal perforated plate is more than the aperture of the strainer.
4. Collaborative experiment device as described in claim 1, which is characterized in that
The Collaborative experiment device includes 3 pressure-measuring pipes;
The balancing gate pit is vertically provided with 3 pressure taps, and 3 pressure taps are equidistantly arranged vertically;3 surveys Pressure pipe is separately connected 3 pressure taps.
5. Collaborative experiment device as described in claim 1, which is characterized in that the Collaborative experiment device further includes:
Temperature test component is arranged in the pressurization on lid;
Graduated cylinder is arranged on the base, to measure the seepage flow water for passing through the soil sample.
6. Collaborative experiment device as described in claim 1, which is characterized in that
The top center of the pressurization upper cover is provided with iron plate, and institute's displacement sensors are fixed on the iron plate;
Described control unit includes:Dynamic test system and computer;The dynamic test system and the pressure transmitter, institute Displacement sensors and computer connection.
CN201511005165.9A 2015-12-28 2015-12-28 A kind of consolidation infiltration Collaborative experiment device CN105486840B (en)

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