CN110132701A - A kind of side insert three axis soil sample sample preparation device of probe-type and method - Google Patents
A kind of side insert three axis soil sample sample preparation device of probe-type and method Download PDFInfo
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- CN110132701A CN110132701A CN201910477997.2A CN201910477997A CN110132701A CN 110132701 A CN110132701 A CN 110132701A CN 201910477997 A CN201910477997 A CN 201910477997A CN 110132701 A CN110132701 A CN 110132701A
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- probe
- soil sample
- earrings
- latex film
- sample
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Classifications
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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
- G01N1/286—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q involving mechanical work, e.g. chopping, disintegrating, compacting, homogenising
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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
- G01N1/36—Embedding or analogous mounting of samples
-
- 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
- G01N1/36—Embedding or analogous mounting of samples
- G01N2001/366—Moulds; Demoulding
Abstract
The invention discloses a kind of sides to insert three axis soil sample sample preparation device of probe-type and method, including sample top cap, specimen mount, split mold and latex film, it is set in outside top cap boss at the top of latex film, latex film bottom is set in outside base boss, split mold is coupled outside latex film, earrings hole is provided on latex film, location hole is provided on split mold, earrings is installed in the location hole of split mold, earrings is made of earrings portion and barrel, earrings portion is located on the inside of latex film, barrel successively fits through earrings hole and location hole, probe sensor is installed inside earrings, probe sensor includes probe and cable, probe is placed in the soil sample chamber of latex film, cable is placed in outside earrings；Sample top cap is provided with the water outlet duct being connected with soil sample chamber, and specimen mount is provided with into water duct.The present invention can complete the three axis preparations of soil sample for being previously implanted probe sensor, for measuring the characteristic parameters such as stress, temperature, moisture, acoustics or stress wave inside soil sample.
Description
Technical field
The present invention relates to geotechnical engineering geotechnique's laboratory test technical fields more particularly to a kind of side to insert three axis soil sample of probe-type
Sample preparation device and method.
Background technique
With the continuous development of China's economy in fields such as traffic, the energy, mine, water conservancy and hydropowers, more and more ground
Engineering is under construction.The accurate physical and mechanical parameter for obtaining Rock And Soil decides the stable operation of the long-term safety of geotechnical engineering,
It is the important evidence of geotechnical engineering design.Three axis soil tests are to obtain the important method of Rock And Soil physical and mechanical parameter, it can
To simulate the stress condition of soil in-situ environment, the intensive parameter of the soil body is obtained, is had to engineering practice and scientific research important
Meaning.Under normal conditions, ordinary triaxial test is only capable of obtaining the shear strength parameter of ground sample.But in some cases,
Due to the needs of scientific research or engineering construction, need to measure soil sample under condition of triaxial stress, stress inside soil sample,
Distribution characteristics and the change of gradient rule of the parameters such as temperature, moisture, acoustics, stress wave.It is then desired on normal triaxial sample edge
Short transverse is previously implanted related sensor, to measure these above-mentioned parameters.But it is existing for conventional geotechnical centrifuge model
Sample preparation device is unable to complete the preparation for needing to be previously implanted three axis soil samples of sensor, and then can not carry out subsequent related examination
Test research.
Summary of the invention
Place in view of the shortcomings of the prior art, the purpose of the present invention is to provide a kind of sides to insert three axis soil sample of probe-type
Sample preparation device and method, sample preparation device and original normal triaxial base engagement use, and can complete to be previously implanted probe sensor
The three axis preparations of soil sample, for measuring stress, temperature, moisture, acoustics or stress wave etc. under condition of triaxial stress inside soil sample
Distribution characteristics and the change of gradient rule of parameter；The present invention can be adjusted according to specific test requirements document between implanted sensor
Away from having many advantages, such as that clear principle, structure are simple, installation and removal are quick.
The purpose of the invention is achieved by the following technical solution:
A kind of slotting three axis soil sample sample preparation device of probe-type in side, including sample top cap, specimen mount, split mold and latex
Film, sample top cap bottom have top cap boss, have base boss, set at the top of the latex film at the top of the specimen mount
Outside top cap boss, the latex film bottom is set in outside base boss, has soil sample chamber inside the latex film；Institute
It states split mold to be composed of two half modules, the split mold is coupled outside latex film, is opened on the latex film
There are several earrings holes, the location hole matched with earrings hole, the location hole of the split mold are provided on the split mold
In earrings is installed, the earrings is made of earrings portion and barrel, has barrel chamber A, the barrel inside the earrings portion
Inside has the barrel chamber B being connected with barrel chamber A, and the outer diameter in the earrings portion is greater than the outer diameter of barrel, and the earrings portion is located at
On the inside of latex film, the barrel successively fits through the location hole on the earrings hole and split mold of latex film, the earrings
Inside installation probe sensor, the probe sensor includes probe and the cable that connect with probe, the probe sensor
Probe is placed in the soil sample chamber of latex film, and the cable is placed in outside earrings；The sample top cap is provided with to be connected with soil sample chamber
Water outlet duct, the specimen mount is provided with the water inlet duct being connected with soil sample chamber.
In order to which the present invention is better achieved, pass through rubber seal C firm locking at the top of the latex film in top cap boss
Outside, the latex film bottom is by rubber seal B firm locking outside base boss.
Preferably, the latch assembly is by connecting plate and is fixed on connecting plate bottom the invention also includes latch assembly
Two bolts composition, the split mold half module two sides correspondence is provided with the pin hole matched with bolt, the split cavity
The corresponding contact side of two half modules of tool is connected by bolt to be locked.
Preferably, being provided with upper and lower two earrings holes on the latex film, it is provided with upper and lower two on the split mold and determines
Position hole, two location holes and two earrings holes correspond, and one earrings of installation is respectively corresponded in two location holes.
Preferably, rubber seal A is sealed and installed in the location hole of the split mold, the rubber seal A
Tight is on barrel lateral wall.
Preferably, the rubber seal A, rubber seal B, rubber seal C are zero shape rubber ring.
Preferably, the earrings is fabricated by rubber material.
Preferably, being equipped with soil sample in the soil sample chamber of the latex film.
A kind of slotting three axis soil sample method for making sample of probe-type in side, including sample preparation device, method and step are as follows:
1), first clear up sample preparation desktop, check sample preparation device all probe sensors whether neat and tidy and intact nothing
Damage；
2) the upper and lower two earrings holes matched with the barrel outer diameter of earrings, are provided on latex film in advance, according to pre-
Dry density, the void ratio index of sample preparation product calculate and weigh the soil sample of required weight, and are divided into several equal portions；
3), the specimen mount of sample preparation device is horizontally placed on sample preparation desktop, and the table on the base boss of specimen mount
A filter paper is placed in face, and by end cap under latex film on the base boss lateral wall of specimen mount, blend rubber sealing ring B is circumferential
It tightens on base boss, two half modules of split mold is coupled outside latex film so that split mold bottom interior wall
The rubber seal B outside base boss is compressed, while guaranteeing the earrings hole on the location hole and latex film on split mold one by one
It is corresponding；The barrel of earrings is passed through to the earrings hole of latex film and the location hole of split mold, the earrings portion of earrings fits closely
In latex film inner wall, blend rubber sealing ring A compresses the barrel root that latex film outer wall makes latex film sealing shroud be loaded on earrings
On outer wall, while it is fitted tightly over earrings integrally by latex film on the inner wall of split mold；Then, inserting latch assembly
Corresponding be inserted into the pin hole on split mold of pin locks split mold with connection；
4), first part of soil sample in step 2) is fallen into latex film using sand rain method through funnel, soil sample surface is struck off,
Split mold lateral wall is tapped using rubber hammer so that soil sample settles, until the positioning of soil sample upper surface and split mold lowest part
The center of circle in hole is in sustained height；
5) probe sensor, is taken, one layer of vaseline is smeared in probe sensor lateral surface, probe sensor is installed
In the earrings of lower part, adjusts the probe location of probe sensor and the probe of probe sensor is made to be placed in the center of soil sample,
So that the probe of probe sensor and soil sample are in close contact, the then upper surface of shaving soil sample；
6), continue to take the equal portions soil sample in step 2) to fall into latex film through funnel, soil sample surface is struck off, using rubber
Hammer taps split mold lateral wall so that soil sample settles, until the center of circle of soil sample upper surface and one layer of location hole on split mold
In sustained height；A probe sensor is taken again, one layer of vaseline is smeared in probe sensor lateral surface, by probe sensor
It is installed in the earrings of top, adjusts the probe location of probe sensor and the probe of probe sensor is made to be placed in the centre bit of soil sample
It sets, so that the probe of probe sensor and soil sample are in close contact, the then upper surface of shaving soil sample；
7), continue to add soil sample into latex film, until by the probe of all probe sensors on split mould side wall
It is all placed in the center of soil sample, so that the probe of probe sensor and soil sample are in close contact, the then upper table of shaving soil sample
Face；Continue to add soil sample into latex film and tapping split mold lateral wall settles soil sample, until soil sample reaches predetermined altitude
Position；
8) it, will turn over downwards and covered in split die tip at the top of latex film, put a filter paper in soil sample top surface, then install
Sample top cap, then by latex film to turning over and cover on the top cap outside the boss wall of sample top cap, and with a rubber seal C
Latex film is tightened, sample is so far filled and finishes, all probe sensors are able to accurately be embedded to the predeterminated position along soil sample height, from
And obtain the three axis soil samples that probe is inserted in side；
9), two latch assemblies are extracted, gently knock and take away two half modules of split film tool open, sample preparation is completed, can be with
Carry out subsequent triaxial test.
The present invention compared with the prior art, have the following advantages that and the utility model has the advantages that
(1) present invention can match the differences such as stress, temperature, moisture, acoustics or stress wave according to the demand of experimental program
The probe sensor of type can be previously implanted probe sensor, and the quantity of implantable probe sensor inside three axis soil samples
It selects according to actual needs.
(2) the present invention provides it is a kind of can side insert three axis soil sample sample preparation devices of probe-type, can according to need, original
Location hole is equidistantly processed on three axis soil sample sample preparation pedestals, and the probe sensor of corresponding number is installed, is aided with simple close
Component is sealed, preparation, which can be realized, can insert three axis soil samples of probe-type, and then can study soil sample under condition of triaxial stress, soil sample
The variation of the characteristic parameters such as internal pressure, temperature, moisture, acoustics or stress wave.
(3) present invention has many advantages, such as that clear principle, structure are simple, installation and removal are quick.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the structural schematic diagram of latch assembly；
Fig. 3 is the structural schematic diagram of earrings；
Fig. 4 is the schematic diagram of 4 type sound wave probe sensor of φ used in the embodiment of the present invention；
Fig. 5 is the structural schematic diagram of 4 type sound wave probe sensor of φ used in the embodiment of the present invention；
Fig. 6 is that soil body acoustic attenuation experimental test is carried out under condition of triaxial stress using after the present invention three axis soil samples of preparation
Test result case；
Fig. 7 is acoustic attenuation test schematic.
Wherein, title corresponding to the appended drawing reference in attached drawing are as follows:
1- sample top cap, 2- probe sensor, 21- feeler lever pipe, 211- probe waterproofing guaranteeding jacket, 212- probe member
Part, 213- probe base, 3- cable, 31- insulation shielding cable cover, 4- location hole, 5- rubber seal A, 51- rubber
Sealing ring B, 52- rubber seal C, 6- earrings, 61- barrel, 62- earrings portion, 7- specimen mount, 71- pedestal are convex
Platform, 8- be discharged duct, 9- soil sample, 10- latex film, 11- top cap boss, 12- pin hole, the split mold of 13-, 14- into
Water hole road, 15- latch assembly, 151- bolt.
Specific embodiment
The present invention is described in further detail below with reference to embodiment:
Embodiment one
As shown in FIG. 1 to 3, three axis soil sample sample preparation device of probe-type, including sample top cap 1, specimen mount are inserted in a kind of side
7, split mold 13, latex film 10 and latch assembly 15,1 bottom of sample top cap have top cap boss 11, have at the top of specimen mount 7
There is base boss 71, be set at the top of latex film 10 outside top cap boss 11,10 bottom of latex film is set in outside base boss 71
Portion has soil sample chamber inside latex film 10, soil sample 9 is housed in the soil sample chamber of the present embodiment latex film 10.Split mold 13 is by two
A half module is composed, and split mold 13 is coupled outside latex film 10, several earrings holes are provided on latex film 10, right
It is provided with the location hole 4 matched with earrings hole on mold 13, earrings 6 is installed in the location hole 4 of split mold 13, the present invention
Preferred earrings 6 is fabricated by rubber material.Earrings 6 is made of earrings portion 62 and barrel 61, is had inside earrings portion 62
Barrel chamber A has the barrel chamber B being connected with barrel chamber A inside barrel 61, and the outer diameter in earrings portion 62 is greater than the outer diameter of barrel 61,
Earrings portion 62 is located at 10 inside of latex film, and barrel 61 successively fits through on the earrings hole and split mold 13 of latex film 10
Location hole 4 installs probe sensor 2 inside earrings 6, as shown in figure 5, probe sensor 2 include probe waterproofing guaranteeding jacket 211,
Feeler lever pipe 21, probe base 213 and cable 3 are equipped with probe element 212, probe element in the probe waterproofing guaranteeding jacket 211
212 connect with cable 3；211 end of probe waterproofing guaranteeding jacket of probe sensor 2 and feeler lever pipe 21 are placed in the soil sample of latex film 10
In chamber, feeler lever pipe 21 keeps horizontal, and probe 211 end of waterproofing guaranteeding jacket is located at the center of soil sample chamber；Probe base 213 is circle
Column type, outer diameter is identical as the inside barrel chamber diameter of earrings 6, is placed in the inside barrel chamber of 6 barrel 61 of earrings；Cable 3 is placed in
Outside earrings 6.Sample top cap 1 is provided with the water outlet duct 8 being connected with soil sample chamber, and specimen mount 7 is provided with to be connected with soil sample chamber
Water inlet duct 14.Probe sensor 2 of the invention be existing maturation sound wave probe sensor (sound wave probe sensor passes through
Probe receives vibration signal), the probe sensor of the present embodiment is preferably 4 type sound wave probe sensor of φ, such as Fig. 4, Fig. 5 institute
Show, 4 type sound wave probe sensor of φ includes probe waterproofing guaranteeding jacket 211, feeler lever pipe 21, probe base 213, waterproofing protection of popping one's head in
Probe element 212 is installed in set 211, cable 3 is connected on probe element 212, cable 3 passes through feeler lever pipe 21, probe base
213,3 outer enclosure of cable has insulation shielding cable cover 31.The 4 type sound wave probe sensor of φ of the present embodiment is also known as probe water and listens
Device or underwater sound sensor, applicant is using Wuxi Hong Zhi energy converter Science and Technology Ltd. 4 type sound wave probe of φ sensing produced
Device, specific structure, the dimensional parameters of 4 type sound wave probe sensor of φ are as follows: the probe hemispherical shape of waterproofing guaranteeding jacket 211, directly
Diameter is 4mm, is made of water proof rubber, is sealed and installed with piezoelectric ceramics probe element 212 in waterproofing guaranteeding jacket 211 of popping one's head in, pops one's head in
Element 212 is mounted on one end (feeler lever pipe 21 plays support and waterproof action) of the hollow Circular Thin feeler lever pipe 21 of 304 stainless steels, visits
The outer diameter of rod tube 21 is 4mm, and the other end of feeler lever pipe 21 is mounted in probe base 213.The cable 3 of probe sensor 2 is successively
It is connected across probe base 213, feeler lever pipe 21 with probe element 212；Probe base 213 is made of flexible rubber material (to be played
90 degree of turnings, the effect that protection cable 3 is not broken, while being inserted into the barrel chamber of earrings 6, play the role of waterproof sealing).Feeler lever
The length of pipe 21 is 62.5mm, and the length of entire 4 type sound wave probe sensor of φ is 69.5mm.In use, probe sensor 2
Feeler lever pipe 21 is inserted into soil sample 9, and keeps horizontal, and makes 211 end of the probe waterproofing guaranteeding jacket position for being equipped with probe element 212
In on the central axes of soil sample 9, being received and transmitted from 9 bottom of soil sample in geotechnical centrifuge model by piezoelectric ceramics probe element 212
Longitudinal wave (P wave or compressional wave) signal that seat or top cap are launched, is laterally inserted into soil sample 2 and the above probe sensor 2, Ke Yishi
The test objective (acoustic attenuation test philosophy is as shown in Figure 7) that soil sample acoustic attenuation coefficient is measured in three axis of existing geotechnique, referring particularly to wide
Eastern polytechnical university's theses and dissertation " seabed sediment acoustics characteristic small distance design of measuring system and experimental study ", author Fu Dong；
And referring to Guangdong University of Technology's theses and dissertation " the small scale sound field ultrasonic probe test experience research of bottom sediment ", Dong author
Quan Cai.
It is the expression formula of acoustic attenuation coefficient α in the case of monochromatic wave for excitation wave:
A in formula1And A2Mintrop wave sound pressure signal maximum amplitude to measure at two 2 positions of probe sensor in soil sample (can be from
Directly read in the waveform diagram of Fig. 6), L2And L1The distance at end is excited for two probe sensors 2 to sound source.
As shown in Figure 1, at the top of latex film 10 through rubber seal C52 firm locking outside top cap boss 11, it is practical
In use, will be lock onto outside top cap boss 11 at the top of latex film 10 by rubber seal C52；10 bottom of latex film passes through rubber
Glue sealing ring B51 firm locking is outside base boss 71, in actual use, by rubber seal B51 by 10 bottom of latex film
Portion is lock onto outside base boss 71.
As shown in Fig. 2, latch assembly 15 is made of connecting plate with two bolts 151 for being fixed on connecting plate bottom, it is split
The half module two sides of mold 13 are corresponding to be provided with the pin hole 12 matched with bolt 151, and two half modules correspondence of split mold 13 connects
It touches side and passes through the connection locking of latch assembly 15.Two half module two sides of split mold 13 have pin hole 12, and (Fig. 1 is one
As soon as half module two sides have a pin hole 12, there are two pin holes 12 for such a half module), at two of split mold 13
After half module combination, two sides pass through the connection locking of latch assembly 15 respectively, and concrete principle is as follows: the first side of first half module
Pin hole 12 connect locking, i.e. the one of latch assembly 15 by latch assembly 15 with the first side pin hole 12 of second half module
Bolt 151 is plugged in the first side pin hole 12 of first half module, another bolt 151 of latch assembly 15 is plugged in second
In first side pin hole 12 of a half module；Second side pin hole 12 of first half module and second side pin hole of second half module
12 by the connection locking of latch assembly 15, i.e., second side that latch assembly 15 a bolt 151 is plugged in first half module is inserted
In pin hole 12, another bolt 151 of latch assembly 15 is plugged in second side pin hole 12 of second half module.
The preferred technical solution of the present embodiment is as follows: as shown in Figure 1, two earrings holes up and down are provided on latex film 10, it is right
Two location holes 4 up and down are provided on mold 13, two location holes 4 and two earrings holes correspond, divide in two location holes 4
One earrings 6 Dui Ying be installed.
As shown in Figure 1, being sealed and installed with rubber seal A5 in the location hole 4 of split mold 13, rubber seal A5 is tight
Close to be wrapped on 61 lateral wall of barrel, latex film 10 can be compressed the cylinder for being sealed in earrings 6 by such rubber seal A5
The root that portion 61 and earrings portion 62 join.
Currently preferred rubber seal A5, rubber seal B51, rubber seal C52 are zero shape rubber ring.
A kind of slotting three axis soil sample method for making sample of probe-type in side, including sample preparation device, method and step are as follows:
1), first clear up sample preparation desktop, check sample preparation device all probe sensors 2 whether neat and tidy and intact nothing
Damage.
2), according to the needs of test, the upper and lower two 61 outer diameter phases of barrel with earrings 6 are provided on latex film 10 in advance
The earrings hole of cooperation, calculates according to the dry density of prefabricated sample, void ratio index and weighs the soil sample 9 of required weight, and is divided into
Several equal portions.
3), the specimen mount of sample preparation device 7 is horizontally placed on sample preparation desktop, and in the base boss of specimen mount 7 71
A filter paper is placed in upper surface, and by the lower end cap of latex film 10 on 71 lateral wall of base boss of specimen mount 7, blend rubber is close
Seal B51 circumferential direction is tightened on base boss 71, by two half modules of split mold 13 be coupled outside latex film 10 with
So that split 13 bottom interior wall of mold is compressed the rubber seal B51 outside base boss 71, while guaranteeing to determine on split mold 13
Earrings hole on position hole 4 and latex film 10 corresponds.The barrel 61 of earrings 6 is passed through into the earrings hole of latex film 10 and split
The location hole 4 of mold 13, the earrings portion 62 of earrings 6 are fitted closely in 10 inner wall of latex film, and blend rubber sealing ring A5 compresses cream
10 outer wall of glue film is loaded on 10 sealing shroud of latex film on the 61 root outer wall of barrel of earrings 6, while keeping earrings 6 whole by latex
Film 10 is fitted tightly on the inner wall of split mold 13.Then, by the corresponding split mold of insertion of the bolt 151 of latch assembly 15
Split mold 13 is locked with connection in pin hole 12 on 13.
4), first part of soil sample 9 in step 2) is fallen into latex film 10 using sand rain method through funnel, by 9 surface of soil sample
It strikes off, split 13 lateral wall of mold is tapped using rubber hammer so that soil sample 9 settles, until 9 upper surface of soil sample and split mold 13
The center of circle of the location hole 4 of lowest part is in sustained height.
5) probe sensor 2, is taken, one layer of vaseline is smeared in 213 lateral surface of probe base, by probe sensor 2
Probe 211 end of waterproofing guaranteeding jacket and feeler lever pipe 21 pass through earrings 6 inside barrel chamber, probe base 213 is installed on lower part
In the inside barrel chamber of 6 barrel 61 of earrings, the tip position of the probe waterproofing guaranteeding jacket 211 of adjustment probe sensor 2 makes probe
The feeler lever pipe 21 of sensor 2 keeps horizontal, and the shaft core position for 211 end of waterproofing guaranteeding jacket insertion soil sample 9 of popping one's head in, so that probe
The feeler lever pipe 21 and probe waterproofing guaranteeding jacket 211 and soil sample 9 of sensor 2 are in close contact, then the upper surface of shaving soil sample 9.
6), continue to take the equal portions soil sample 9 in step 2) to fall into latex film 10 through funnel, 9 surface of soil sample is struck off, use
Rubber hammer taps split 13 lateral wall of mold so that soil sample 9 settles, until 9 upper surface of soil sample is determined with one layer on split mold 13
The center of circle in position hole 4 is in sustained height.A probe sensor 2 is taken again, smears one layer of all scholar in 213 lateral surface of probe base
Probe 211 end of waterproofing guaranteeding jacket of probe sensor 2 and feeler lever pipe 21 are passed through the inside barrel chamber of earrings 6, by probe bottom by woods
Seat 213 is installed in the inside barrel chamber of 6 barrel 61 of top earrings, adjusts 211 end of probe waterproofing guaranteeding jacket of probe sensor 2
The position of head keeps 21 holding of feeler lever pipe of probe sensor 2 horizontal, the axle center of probe 211 end of waterproofing guaranteeding jacket insertion soil sample 9
Position, so that 211 end of probe waterproofing guaranteeding jacket of the probe sensor 2 in probe 211 end of waterproofing guaranteeding jacket and lower part earrings 6
Head be located at soil sample 9 axis same vertical line on, and allow probe sensor 2 feeler lever pipe 21 and probe waterproofing guaranteeding jacket 211
It is in close contact with soil sample 9, then the upper surface of shaving soil sample 9.
7), continue to add soil sample 9 into latex film 10, according to the method for step 6), until will be on split 13 side wall of mold
The probes of all probe sensors 2 be entirely insertable in soil sample 9, and all 211 ends of probe waterproofing guaranteeding jacket are respectively positioned on
In the axis same vertical line of soil sample 9, the feeler lever pipe 21 and probe waterproofing guaranteeding jacket 211 and soil sample 9 of probe sensor 2 are close
It contacts, then the upper surface of shaving soil sample 9.Continue to add soil sample 9 and tap split 13 lateral wall of mold into latex film 10 to make
Soil sample 9 settles, until soil sample 9 reaches desired height position.
8), 10 top of latex film is turned over downwards and is covered on split 13 top of mold, puts a filter paper in 9 top surface of soil sample, so
Sample top cap 1 is installed afterwards, then by latex film 10 to turning over and cover on 11 lateral wall of top cap boss of sample top cap 1, and with one
A rubber seal C52 tightens latex film 10, so far fills sample and finishes, all probe sensors 2 are able to accurately be embedded to along soil
The predeterminated position of 9 height of sample, to obtain the three axis soil samples that probe is inserted in side.
9), two latch assemblies 15 to be extracted, gently knock and take away two half modules of split film tool 13 open, sample preparation is completed,
Subsequent triaxial test can be carried out.
10), according to conventional geotechnical centrifuge model method, saturation consolidation operation is carried out to three axis soil samples, until reaching test
Scheduled condition of triaxial stress.Then, the sinusoidal compression of a 100kHz is excited in the bending of three axis soil samples-stretching, extension member top cap
Wave, the signal received along two probe sensors 2 of soil sample height according to the calculated soil sample sound of formula (1) as shown in fig. 6, decline
Subtracting factor alpha is 135dB/m.
Earrings hole on latex film 10 of the invention can be provided with multiple, and the location hole 4 on split mold 13 can be provided with
Multiple, location hole 4 is equal with the quantity in earrings hole and corresponds, and can thus install multiple probe sensors 2, prepared
Three axis soil samples in also contain multiple probe sensors 2, the quantity of specific probe sensor 2 is determine according to actual needs.
Embodiment two
A kind of slotting three axis soil sample method for making sample of probe-type in side, including sample preparation device, method and step are as follows:
1), first clear up sample preparation desktop, check sample preparation device all probe sensors 2 whether neat and tidy and intact nothing
Damage.
2), according to test to the pitch requirements of probe sensor 2, two and earrings up and down are provided on latex film 10 in advance
The earrings hole (61 outer diameter of barrel that the aperture in earrings hole is slightly less than earrings 6) that 6 61 outer diameter of barrel matches, certain latex
The earrings hole number of film 10 is not limited to two, can calculate and claim according to the dry density of prefabricated sample, void ratio index to be multiple
The soil sample 9 of required weight is taken, and soil sample 9 is equally divided into five equal portions.
3), the specimen mount of sample preparation device 7 is horizontally placed on sample preparation desktop, and in the base boss of specimen mount 7 71
A filter paper is placed in upper surface, and by the lower end cap of latex film 10 on 71 lateral wall of base boss of specimen mount 7, blend rubber is close
Seal B51 circumferential direction is tightened on base boss 71, by two half modules of split mold 13 be coupled outside latex film 10 with
So that split 13 bottom interior wall of mold is compressed the rubber seal B51 outside base boss 71, while guaranteeing to determine on split mold 13
Earrings hole on position hole 4 and latex film 10 corresponds.The barrel 61 of earrings 6 is passed through into the earrings hole of latex film 10 and split
The location hole 4 of mold 13, the earrings portion 62 of earrings 6 are fitted closely in 10 inner wall of latex film, and blend rubber sealing ring A5 compresses cream
10 outer wall of glue film is loaded on 10 sealing shroud of latex film on the 61 root outer wall of barrel of earrings 6, while keeping earrings 6 whole by latex
Film 10 is fitted tightly on the inner wall of split mold 13.Then, by the corresponding split mold of insertion of the bolt 151 of latch assembly 15
Split mold 13 is locked with connection in pin hole 12 on 13.
4), first part of soil sample 9 in step 2) is fallen into latex film 10 using sand rain method through funnel, by 9 surface of soil sample
It strikes off, split 13 lateral wall of mold is tapped using rubber hammer so that soil sample 9 settles, until 9 upper surface of soil sample and split mold 13
The center of circle of the location hole 4 of lowest part is in sustained height.
5) probe sensor 2, is taken, one layer of vaseline is smeared in 213 lateral surface of probe base, by probe sensor 2
Probe 211 end of waterproofing guaranteeding jacket and feeler lever pipe 21 pass through earrings 6 inside barrel chamber, probe base 213 is installed on top
In the inside barrel chamber of 6 barrel 61 of earrings, the position of probe 211 end of waterproofing guaranteeding jacket of adjustment probe sensor 2 makes probe
The feeler lever pipe 21 of sensor 2 keeps horizontal, the center of probe 211 end of waterproofing guaranteeding jacket insertion soil sample 9, and probe is allowed to pass
The feeler lever pipe 21 and probe waterproofing guaranteeding jacket 211 and soil sample 9 of sensor 2 are in close contact, then the upper surface of shaving soil sample 9.
6), continue to take the equal portions soil sample 9 in step 2) to fall into latex film 10 through funnel, 9 surface of soil sample is struck off, use
Rubber hammer taps split 13 lateral wall of mold so that soil sample 9 settles, until 9 upper surface of soil sample and split 13 top location hole of mold
4 center of circle is in sustained height.A probe sensor 2 is taken again, smears one layer of vaseline in 213 lateral surface of probe base, it will
Probe 211 end of waterproofing guaranteeding jacket of probe sensor 2 and feeler lever pipe 21 pass through the inside barrel chamber of earrings 6, by probe base 213
It is installed in the inside barrel chamber of 6 barrel 61 of top earrings, probe 211 end of waterproofing guaranteeding jacket of adjustment probe sensor 2
Position keeps 21 holding of feeler lever pipe of probe sensor 2 horizontal, the centre bit of probe 211 end of waterproofing guaranteeding jacket insertion soil sample 9
It sets, so that 211 end of probe waterproofing guaranteeding jacket of the probe sensor 2 in probe 211 end of waterproofing guaranteeding jacket and lower part earrings 6
In the axis same vertical line of soil sample 9, and allow probe sensor 2 feeler lever pipe 21 and probe waterproofing guaranteeding jacket 211 with
Soil sample 9 is in close contact, then the upper surface of shaving soil sample 9.
7), continue to add remaining soil sample 9 into latex film 10 and tapping split 13 lateral wall of mold settles soil sample 9, directly
Reach desired height position to soil sample 9.8), 10 top of latex film is turned over downwards and is covered on split 13 top of mold, is pushed up in soil sample 9
A filter paper is put in face, then installs sample top cap 1, then by latex film 10 to turning over and cover the top cap boss 11 in sample top cap 1
On lateral wall, and latex film 10 is tightened with a rubber seal C52, so far fills sample and finish, all probe sensors 2 are able to essence
It really is embedded to the predeterminated position along 9 height of soil sample, to obtain the three axis soil samples that probe is inserted in side.
9), two latch assemblies 15 to be extracted, gently knock and take away two half modules of split film tool 13 open, sample preparation is completed,
Subsequent triaxial test can be carried out.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (9)
1. three axis soil sample sample preparation device of probe-type is inserted in a kind of side, it is characterised in that: including sample top cap (1), specimen mount (7),
Split mold (13) and latex film (10), sample top cap (1) bottom have top cap boss (11), the specimen mount (7)
Top has base boss (71), and top cap boss (11) outside, the latex film (10) are set at the top of the latex film (10)
Bottom is set in base boss (71) outside, has soil sample chamber inside the latex film (10)；The split mold (13) is by two
A half module is composed, and the split mold (13) is coupled to be provided on latex film (10) outside, the latex film (10)
Several earrings holes are provided with the location hole (4) matched with earrings hole, the split mold (13) on the split mold (13)
Location hole (4) in be equipped with earrings (6), the earrings (6) is made of earrings portion (62) and barrel (61), the earrings portion
(62) internal that there is barrel chamber A, there is the barrel chamber B being connected with barrel chamber A inside the barrel (61), the earrings portion (62)
Outer diameter is greater than the outer diameter of barrel (61), and the earrings portion (62) is located on the inside of latex film (10), and the barrel (61) is successively
The location hole (4) on the earrings hole and split mold (13) of latex film (10) is fitted through, spy is installed inside the earrings (6)
Needle sensor (2), the probe sensor (2) include probe and the cable connecting with probe (3), the probe sensor (2)
Probe be placed in the soil sample chamber of latex film (10), it is external that the cable (3) is placed in earrings (6)；The sample top cap (1) is provided with
The water outlet duct (8) being connected with soil sample chamber, the specimen mount (7) are provided with the water inlet duct (14) being connected with soil sample chamber.
2. three axis soil sample sample preparation device of probe-type is inserted in a kind of side described in accordance with the claim 1, it is characterised in that: the latex film
(10) top passes through rubber seal C(52) in top cap boss (11) outside, latex film (10) bottom passes through firm locking
Rubber seal B(51) firm locking is external in base boss (71).
3. three axis soil sample sample preparation device of probe-type is inserted in a kind of side described in accordance with the claim 1, it is characterised in that: further include bolt
Component (15), the latch assembly (15) is made of connecting plate with two bolts (151) for being fixed on connecting plate bottom, described right
The half module two sides correspondence of mold (13) is provided with the pin hole (12) matched with bolt (151), the split mold (13)
The corresponding contact side of two half modules passes through bolt (151) connection locking.
4. three axis soil sample sample preparation device of probe-type is inserted in a kind of side described in accordance with the claim 1, it is characterised in that: the latex film
(10) it is provided with two earrings holes up and down on, two location holes (4) up and down, two location holes are provided on the split mold (13)
(4) it is corresponded with two earrings holes, one earrings (6) of installation is respectively corresponded in two location holes (4).
5. inserting three axis soil sample sample preparation device of probe-type according to a kind of side described in claim 1 or 4, it is characterised in that: described right
Be sealed and installed with rubber seal A(5 in the location hole (4) of mold (13)), the rubber seal A(5) tight in
On barrel (61) lateral wall.
6. three axis soil sample sample preparation device of probe-type is inserted in a kind of side according to claim 5, it is characterised in that: the rubber is close
Seal A(5), rubber seal B(51), rubber seal C(52) be zero shape rubber ring.
7. inserting three axis soil sample sample preparation device of probe-type according to a kind of side described in claim 1 or 4, it is characterised in that: the ear
Ring (6) is fabricated by rubber material.
8. three axis soil sample sample preparation device of probe-type is inserted in a kind of side described in accordance with the claim 1, it is characterised in that: the latex film
(10) soil sample (9) are housed in soil sample chamber.
9. three axis soil sample method for making sample of probe-type is inserted in a kind of side, the sample preparation device including any one of claim 1~8, feature
Be: its method and step is as follows:
1), first clear up sample preparation desktop, check sample preparation device all probe sensors (2) whether neat and tidy and intact nothing
Damage；
2) two earrings holes matched with barrel (61) outer diameter of earrings (6) up and down, are provided on latex film (10) in advance,
The soil sample (9) of required weight is calculated and weighed according to the dry density of prefabricated sample, void ratio index, and is divided into several equal portions；
3), the specimen mount of sample preparation device (7) is horizontally placed on sample preparation desktop, and the base boss in specimen mount (7)
(71) filter paper is placed in upper surface, by end cap under latex film (10) on base boss (71) lateral wall of specimen mount (7),
Blend rubber sealing ring B(51) circumferential direction tightens on base boss (71), two half modules of split mold (13) is coupled
In latex film (10) outside so that split mold (13) bottom interior wall compresses the rubber seal B(51 of base boss (71) outside),
Guarantee that the location hole (4) on split mold (13) and the earrings hole on latex film (10) correspond simultaneously；By the cylinder of earrings (6)
Body portion (61) passes through the earrings hole of latex film (10) and the location hole (4) of split mold (13), and the earrings portion (62) of earrings (6) is tight
It is closely connected together in latex film (10) inner wall, blend rubber sealing ring A(5) compress latex film (10) outer wall make latex film (10) sealing shroud
On barrel (61) root outer wall loaded on earrings (6), while it is split to be fitted tightly over earrings (6) integrally by latex film (10)
On the inner wall of mold (13)；Then, by the corresponding bolt being inserted on split mold (13) of the bolt (151) of latch assembly (15)
Split mold (13) is locked with connection in hole (12)；
4), first part of soil sample (9) in step 2 is fallen into latex film (10) using sand rain method through funnel, by soil sample (9) table
Face strikes off, and taps split mold (13) lateral wall using rubber hammer so that soil sample (9) settles, until soil sample (9) upper surface with it is right
The center of circle of the location hole (4) of mold (13) lowest part is in sustained height；
5) probe sensor (2), is taken, one layer of vaseline is smeared in probe sensor (2) lateral surface, by probe sensor
(2) it is installed in lower part earrings (6), adjusts the probe location of probe sensor (2) and is placed in the probe of probe sensor (2)
The center of soil sample (9), so that the probe of probe sensor (2) and soil sample (9) are in close contact, then shaving soil sample (9)
Upper surface；
6), continue to take the equal portions soil sample (9) in step 2 to fall into latex film (10) through funnel, soil sample (9) surface is struck off, is adopted
Split mold (13) lateral wall is tapped with rubber hammer so that soil sample (9) settles, until soil sample (9) upper surface and split mold (13)
The center of circle of upper one layer of location hole (4) is in sustained height；A probe sensor (2) is taken again, on the outside of probe sensor (2)
One layer of vaseline is smeared in face, and probe sensor (2) is installed in top earrings (6), adjusts the probe position of probe sensor (2)
The center set and the probe of probe sensor (2) is made to be placed in soil sample (9), so that the probe of probe sensor (2) and soil
Sample (9) is in close contact, then the upper surface of shaving soil sample (9)；
7), continue to add soil sample (9) in latex film (10), until by all probe sensors on split mold (13) side wall
(2) probe is all placed in the center of soil sample (9), so that the probe of probe sensor (2) and soil sample (9) are in close contact,
Then the upper surface of shaving soil sample (9)；Continue to add soil sample (9) into latex film (10) and taps split mold (13) lateral wall
Settle soil sample (9), until soil sample (9) reach desired height position；
8) it, will turn over downwards and covered on split mold (13) top at the top of latex film (10), put a filter paper in soil sample (9) top surface,
Then sample top cap (1) is installed, then by latex film (10) to turning over and cover top cap boss (11) lateral wall in sample top cap (1)
On, and latex film (10) are tightened with a rubber seal C(52), it so far fills sample and finishes, all probe sensors (2) are able to essence
It really is embedded to the predeterminated position along soil sample (9) height, to obtain the three axis soil samples that probe is inserted in side；
9), two latch assemblies (15) to be extracted, gently knock and take away two half modules of split film tool (13) open, sample preparation is completed,
Subsequent triaxial test can be carried out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910477997.2A CN110132701A (en) | 2019-06-03 | 2019-06-03 | A kind of side insert three axis soil sample sample preparation device of probe-type and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910477997.2A CN110132701A (en) | 2019-06-03 | 2019-06-03 | A kind of side insert three axis soil sample sample preparation device of probe-type and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113848106A (en) * | 2021-09-14 | 2021-12-28 | 天津大学 | Preparation device and method suitable for loose saturated sand sample in geotechnical triaxial shear test |
| CN116203211A (en) * | 2023-01-06 | 2023-06-02 | 哈尔滨工业大学（深圳） | Film bearing cylinder device suitable for rubber film with guide pipe and application method |
-
2019
- 2019-06-03 CN CN201910477997.2A patent/CN110132701A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113848106A (en) * | 2021-09-14 | 2021-12-28 | 天津大学 | Preparation device and method suitable for loose saturated sand sample in geotechnical triaxial shear test |
| CN113848106B (en) * | 2021-09-14 | 2022-12-20 | 天津大学 | Preparation device and method suitable for loose saturated sand sample in geotechnical triaxial shear test |
| CN116203211A (en) * | 2023-01-06 | 2023-06-02 | 哈尔滨工业大学（深圳） | Film bearing cylinder device suitable for rubber film with guide pipe and application method |
| CN116203211B (en) * | 2023-01-06 | 2024-03-26 | 哈尔滨工业大学(深圳)(哈尔滨工业大学深圳科技创新研究院) | Film bearing cylinder device suitable for rubber film with guide pipe and application method |
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