CN108663319A - Soil is pushed in one kind and the adjustable clay of contact area sticks force test device and test method - Google Patents
Soil is pushed in one kind and the adjustable clay of contact area sticks force test device and test method Download PDFInfo
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- CN108663319A CN108663319A CN201810853535.1A CN201810853535A CN108663319A CN 108663319 A CN108663319 A CN 108663319A CN 201810853535 A CN201810853535 A CN 201810853535A CN 108663319 A CN108663319 A CN 108663319A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/04—Measuring adhesive force between materials, e.g. of sealing tape, of coating
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
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Abstract
Soil is pushed in one kind and the adjustable cohesive soil of contact area sticks force test device and test method, by cylindrical native box, endless metal backing plate, native lid plate, fixed pulley group, water-storing bottle, water supply bottle, flowmeter, balance, air compressor machine, collectively constitute for bucket, pressure valve, pressure gauge, water pocket, valve, hose and nylon rope, constant pressure is set to being loaded for bucket by air compressor machine, so that water pocket is expanded generation under constant water pressure and above pushes away soil-squeezing action, equably soil sample is loaded, soil sample is allowed to be more uniformly distributed with native lid plate interfacial stress.By the endless metal backing plate for replacing various cross-sectional areas, realize that native lid plate and the soil sample adhesive force test function under different contacts area, the use of endless metal backing plate solve the problems, such as that adhesive force measures under different contact surfaces in adhesive force testing experiment and soil sample is cohered in the survey face of trying to get to the heart of a matter.
Description
Technical field
The invention belongs to tunneling and underground engineering test apparatus technical fields, more particularly to soil and contact surface are pushed in one kind
The adjustable clay of product sticks force test device and test method.
Background technology
Shield construction is since driving speed is fast, security performance is high, sedimentation is conducive to control, surrounding enviroment are influenced with small spy
Point, is widely used in Construction of City Tunnel.Since subsurface geology situation is complicated, shield machine is constructed in the stratum rich in clay,
The broken soil body to get off is cut to be easy to cohere on cutterhead surface, with the increase of advance distance, the soil body that cutterhead surface is cohered
Migration and gradually thickening finally form mud cake on cutterhead surface, to cause the driving speed of cutterhead drastically to decline, while can also
It causes cutterhead high oil temperature to make shield that can not tunnel, greatly reduces excavation efficiency.Therefore, cohesive soil and metal surface are studied
Adhesive force has important directive significance to preventing cutterhead mud lining.
It is studied at present about cohesive soil and the adhesive force of metal surface, mostly uses the survey disk that area is certain, surface is smooth greatly,
Apply scheduled load and kept for a period of time, then unloads and pull survey disk, and then measure the adhesive force of cohesive soil, but it is this
It surveys disk to be only capable of measuring the cohesive soil adhesive force that adhesive force is less than under the conditions of cohesive force, and is more than the feelings of cohesive force for adhesive force
Condition can then cause the survey face of trying to get to the heart of a matter to cohere the soil body, and then not measure true adhesive force.For example, Chinese scholar mulberry center is in its opinion
Text《Hydraulic pressure electric measuring type cohesive soil adhesion tester》In propose a kind of survey disk, occur as soon as during the test survey try to get to the heart of a matter face with
Cohere the problem of soil body in side.In Amir Khsbbazi Basmenj in 2016 in its paper《Assessment of the
adhesion potential of kaolinite and montmorillonite using a pull-out test
device》It proposes one kind and sticking force test device, although this device alleviates metal to a certain extent during the test
Survey is tried to get to the heart of a matter face and side the problem of cohering the soil body, but is not fully solved always.Simultaneously for current already present adhesive force
Test device under still can not achieve different contacts area during carrying out adhesion test, measures cohesive soil and metal watch
The function of face adhesive force.
To overcome above-mentioned deficiency, the present invention to propose to push soil and the adjustable clay adhesive force test dress of contact area in one kind
Set, analysis cohesive soil from metal contact surface adhesive force, under different contacts area cohesive soil and metal surface adhesive force change
The case where changing the adhesive force under situation and different soil sample parameters on cohesive soil and metal contact surface, to stick for cohesive soil
Mechanism study provides effective analysis foundation.
Invention content
The object of the present invention is to provide push the native and adjustable clay of contact area in one kind to stick force test device and survey
Method for testing solves in the experiment of cohesive soil adhesive force test model, surveys face of trying to get to the heart of a matter and side and coheres the soil body and cohesive soil and surveyed with metal
The problem of disk contact area can not change determines the changing rule of cohesive soil and adhesion on metal contact surface, and having prevents
Try to get to the heart of a matter face and side of survey coheres the soil body, adjusts the advantages of soil sample is with disk contact area is surveyed, and can apply and stick disclosing cohesive soil
The scientific research field of mechanism and the incrusted formation mechanism study of cutterhead.
Soil is pushed in one kind and the adjustable clay of contact area sticks force test device and test method, by cylindrical soil
Box, endless metal backing plate, native lid plate, fixed pulley group, water-storing bottle, water supply bottle, flowmeter, balance, air compressor machine, for bucket, control
Pressure valve, pressure gauge, water pocket, valve, hose and nylon rope collectively constitute, and constant pressure is arranged to being carried out for bucket by air compressor machine
Load makes water pocket expand generation under constant water pressure and above pushes away soil-squeezing action, equably loaded to soil sample, different by replacing
The endless metal backing plate of annular cross-sectional area realizes native lid plate and the soil sample adhesive force test function under different contacts area,
The use of endless metal backing plate efficiently solves in adhesive force testing experiment adhesive force under different contact surfaces and measures tries to get to the heart of a matter face with survey
The problem of cohering soil sample.
The device of the measurement adhesive force, which is characterized in that endless metal backing plate is bolted on cylindrical soil
On box, rubber ring is arranged in the position of cylindrical soil box and endless metal pad contact, prevents the particle in soil sample in loading procedure
Or water enters the contact gap of endless metal backing plate and cylindrical native box；
Native lid plate is bolted on above endless metal backing plate on cylindrical native box, endless metal backing plate with
Native lid plate contact surface is arranged rubber ring, prevents the particle in soil sample in loading procedure close to endless metal backing plate inner circle position
Or water is into the contact gap of bury lid plate and endless metal backing plate；
Cylindrical soil box bottom centre position is provided with circular hole, and water pocket bottom surface is bonded in cylindrical native box inner bottom with seccotine
Face；
The water inlet of water pocket is connect by hose with water supply bottom of the barrel through the circular hole of cylindrical native box bottom centre position,
Setting pressure gauge and valve on hose between water supply bottom of the barrel and cylindrical native box；
It is connect with air compressor machine by hose for the top of bucket, is arranged on the hose at the top of for bucket between air compressor machine
Pressure valve and valve.
The device of the measurement adhesive force, which is characterized in that the outer diameter of cylindrical soil box is 23cm~25cm, and internal diameter is
22cm~24cm, Barrel portion height are 20cm~21cm, the high 10cm~15cm of leg, and cylindrical soil box top edge thickness is
0.8cm~1cm, abrupt changes in thickness is 0.5cm~0.7cm at the cylindrical native box inner wall 2cm~3cm of distance, and reduce thickness is ring
The thickness of shape metal caul；
Uniformly it is provided with 4-6 air hole in the same level of cylindrical soil box side, a diameter of 0.5cm of air hole~
0.6cm, is embedded with rubber ring on the inside of air hole, pastes water strainer at air hole on the inside of cylindrical soil box, which only allows soil
The outflow of water in sample；
Cylindrical soil box bottom centre position is provided with circular hole, and circular-hole internal-wall is Nian Jie with water pocket water inlet by seccotine, water
Capsule bottom surface and cylindrical native box inner bottom surface strength glue sticking, wherein the shape of water pocket is semielliptical shape；
The a port of pressure gauge is connect by hose with the water inlet of water pocket in cylindrical native box, another port passes through
Hose connection valve door is used to measure the pressure in water pocket during testing.
The device of the measurement adhesive force, which is characterized in that endless metal backing plate is set, and realizes constant area A0Under
The test of cohesive soil adhesive force, endless metal backing plate have certain thickness, endless metal backing plate inner circle region soil sample by
Power will be greater than inner circle perimeter, to solve the problems, such as survey try to get to the heart of a matter face with survey disk outer ledge cohere soil sample；
The endless metal of different annular cross-sectional areas can be replaced during experiment according to the needs for testing different test areas
The adjustable function of force test device area is sticked in backing plate, realization；
It is described to stick force test device, which is characterized in that the test process for sticking force test device is divided on water pocket and bulldozing
Body loads and drawing soil lid plate carries out adhesive force and tests two stages.
It is described to stick force test device, which is characterized in that the setting of pressure valve can set the constant pressure of different stage
To soil sample uniform load；
Constant pressure is set by pressure valve, is made the test method for pushing soil on the water pocket of bottom, is realized to the equal of soil sample
The function of even load allows soil sample to be more uniformly distributed with native lid plate bottom surface contact stress.
It is described to stick force test device, which is characterized in that provide drawing soil box cover by the quality of the water of water supply bottle reduction
The pulling capacity of plate, the mass change of water can accurately reflect the variation of adhesive force between native lid plate and soil sample in water supply bottle
Journey.
It is described to stick force test device, which is characterized in that the upper pushing soil component in described device soil box is water pocket, piston
In one kind.
A kind of upper test method pushed soil and the adjustable clay of contact area and stick force test device, which is characterized in that
Sticking force test device development experiment using soil and the adjustable clay of contact area is pushed in described one kind, specific steps are such as
Under：
Step 1：It connects this and sticks force test device, by squeezing the air being completely exhausted out in water pocket, and close water pocket
The valve of side；
Step 2：Soil sample needed for test preparation according to a certain percentage is prepared after completing, and layering is loaded on cylindrical soil
It in box, and is layered and hits real until filling cylindrical native box, then remove the extra soil sample in cylindrical native box edge, then will with bolt
Endless metal backing plate is fixed on the cylindrical native box edge of a wing, is fixed after finishing, and is continued the native sample of filling into cylindrical native box, is made
Soil sample is concordant with plane on endless metal backing plate, is finally fixed by bolts to native lid plate on the edge of a wing of cylindrical native box；
Step 3：After sample filling finishes, air compressor machine and valve are opened, is adjusted initial needed for pressure valve setting experiment
Pressure, by the constant water pressure in water pocket equably to pushing pressure load in soil sample；
Step 4：After loaded, air compressor machine is first closed, turns off the valve of water pocket side, finally removes valve or less
Hose；
Step 5：The bolt between native lid plate and cylindrical native box is removed, according to according to whether eliminating pull of vacuum
Influence, choose whether to remove the bolt of air hole on cylindrical native box；
Step 6：Nylon rope one end connects water-storing bottle, and the other end is around the native lid plates top of two fixed pulley connections, wherein
The quality of water-storing bottle is slightly less than the quality of native lid plate, and the of poor quality of the two is MDifference；
Step 7：By water supply bottle into water-storing bottle plus water, flowmeter is connected on the hose of water supply bottle, allows sluggish flow
Smoothly flow into water-storing bottle；
Step 8：Into water-storing bottle plus water, until native lid plate and soil sample interface are completely disengaged, water supply bottle at this time is recorded
Quality determines the mass change M of water supply water in bottleWater, water supply bottle end valve door is being closed, M is then usedWaterSubtract native lid plate and water storage
The difference M of bottle qualityDifference, it is multiplied by gravity acceleration g again divided by the contact area S, i.e. P=(M of native lid plate and soil sampleWater-MDifference)g/
S, wherein P is surveyed adhesive force, MWaterIt is continually changing, passes through P=(MWater-MDifference) g/S is that can determine adhesive force at any time
Change procedure determines the peak value P of adhesive forcemax。
Advantageous effect
The present invention solves metal can not change contact surface with the experiment of soil sample contact surface adhesive force test model
The problem of test contact surface adhesive force coheres cohesive soil with survey disk, has following beneficial effect：
(1) use of endless metal backing plate efficiently solves the metal survey face of trying to get to the heart of a matter and coheres soil sample, can not accurately measure soil sample
The problem of with metal interface adhesive force.
(2) test method that soil is pushed on cylindrical native cassette bottom portion water pocket, realizes the uniform load to soil sample, allows soil sample
It is more uniform with the contact stress of native lid plate bottom surface.
Description of the drawings
Fig. 1 is soil sample and the test of metal interface cohesion and loading device figure, is sticked with metal interface wherein (a) is soil sample
Force test device figure (b) is soil sample and metal interface adhesive force loading device for testing figure；
Fig. 2 is cylindrical native box normal section topology view；
Fig. 3 is endless metal backing structure view, wherein (a) is endless metal backing plate normal section topology view, it is (b) ring
Shape metal caul top plan view；
In 1~attached drawing of attached drawing 3,1 is cylindrical native box；2 be endless metal backing plate；3 be native lid plate；4 be fixed pulley；
5 be water-storing bottle；6 be flowmeter；7 be water supply bottle；8 be balance；9 be air compressor machine；10 is for buckets；11 be pressure valve；12 be pressure
Power table；13 be water pocket；14 be valve；15 be hose；16 be nylon rope；17 be soil sample；18 be air hole；19,20,23 be difference
Size bolt；21 be rubber ring；22 be water strainer.
Specific implementation mode
The present invention is further described below in conjunction with drawings and examples.
Such as Fig. 1-as shown in figure 3, pushing soil and the adjustable clay of contact area in one kind sticking force test device (as schemed
1), by cylindrical native box 1, endless metal backing plate 2, native lid plate 3, fixed pulley 4, water-storing bottle 5, flowmeter 6, water supply bottle 7, balance
8, air compressor machine 9, collectively constitute for bucket 10, pressure valve 11, pressure gauge 12, water pocket 13, valve 14, hose 15 and nylon rope 16；
It is characterized in that, endless metal backing plate 2 is fixed on by bolt 19 on cylindrical native box 1, cylindrical soil box 1 and ring
The position rubber ring 21 that shape metal caul 2 contacts, prevents particle and water in loading procedure in soil sample from entering endless metal pad
The contact gap of plate 2 and cylindrical native box 1；
Native lid plate 3 is fixed on by bolt 20 on cylindrical native box 1, endless metal pad above endless metal backing plate 2
2 with native 3 contact surface of lid plate close to 2 inner circle position of endless metal backing plate, rubber ring 21 is set, is prevented in loading procedure in soil sample
Particle and water into the contact gap of bury lid plate 3 and endless metal backing plate 2；
Cylindrical soil 1 bottom centre position of box is provided with circular hole, and 14 bottom surface of water pocket is bonded in seccotine in cylindrical native box 1
Portion bottom surface；
The water inlet of water pocket 13 runs through the circular hole of 1 bottom centre position of cylindrical native box by hose 15 and for 10 bottom of bucket
Portion connects, setting pressure gauge 12 and valve 14 on for the hose 15 between 10 bottom of bucket and cylindrical native box 1；
It is connect with air compressor machine 9 by hose 15 for the top of bucket 10, for soft between 10 top of bucket and air compressor machine 9
Pressure valve 11 and valve 14 are set on pipe 15；
The outer diameter of cylindrical soil box 1 (such as Fig. 2) is 23cm~25cm, and internal diameter is 22cm~24cm, and Barrel portion height is
20cm~21cm, the high 10cm~15cm of leg, 1 edge thickness of cylindrical soil box are 0.8cm~1cm, in cylindrical native box 1
Abrupt changes in thickness is 0.5cm~0.7cm at wall 2cm~3cm, and reduce thickness is the thickness of endless metal backing plate 2；
4-6 air hole 18 is uniformly opened up in cylindrical soil 1 side same level of box, it can be as needed during experiment
Whether the influence of pull of vacuum is eliminated, and part air hole 18 is opened or blocked in selection；
A diameter of 0.5cm~0.6cm of air hole 18,18 inside of air hole are embedded with rubber ring 21, cylindrical 1 inside of soil box
Water strainer 22 is pasted at air hole 18, and water in soil sample is only allowed to flow out；
Cylindrical soil 1 bottom centre position of box is provided with circular hole, and circular-hole internal-wall is Nian Jie with 13 water inlet of water pocket by seccotine,
13 bottom surface of water pocket and cylindrical native box 1 inner bottom surface strength glue sticking, wherein the shape of water pocket 13 is semielliptical shape；
The a port of pressure gauge 12 is connect by hose 15 with the water inlet of water pocket 13 in cylindrical native box 1, another
Port is used to measure the pressure in water pocket 13 during testing by 15 connecting valve 14 of hose.
Endless metal backing plate 2 (such as Fig. 3), endless metal backing plate 2 are set, and realize constant area A0Lower cohesive soil adhesive force
Test, endless metal backing plate 2 has certain thickness, and 16 stress of soil sample in 2 inner circle region of endless metal backing plate will be greater than
Inner circle perimeter, to solve the problems, such as survey try to get to the heart of a matter face with survey disk outer ledge cohere soil sample 17；
The endless metal backing plate 2 of different annular cross-sectional areas can be replaced according to the needs for testing different test areas, realized
Stick the adjustable function of force test device area.
The test process for sticking force test device is divided on water pocket 13 load of soil-shifting body and drawing soil lid plate 3 is sticked
Power tests two stages.
The setting of pressure valve 12 can set the constant pressure of different stage to 18 uniform load of soil sample；
Constant pressure is set by pressure valve 12, is made the test method for pushing soil on bottom water pocket 13, is realized to soil sample
The function of 17 uniform load allows soil sample 17 to be more uniformly distributed with native lid plate bottom surface contact stress.
There is provided the pulling capacity of drawing soil lid plate 3 by the quality of the water of 7 reduction of water supply bottle, the quality of water in water supply bottle 7
Variation can accurately reflect the change procedure of adhesive force between native lid plate 3 and soil sample 17.
Upper pushing soil component in described device soil box 1 is one kind in water pocket, piston.
A kind of upper test method pushed soil and the adjustable clay of contact area and stick force test device, which is characterized in that
Force test device is controllably sticked with the cover-plate type for squeezing load using a kind of area and carries out experiment, is as follows：
Step 1：It connects this and sticks force test device, by squeezing the air being completely exhausted out in water pocket 13, and close water
The valve 14 of 13 side of capsule；
Step 2：Soil sample 17 needed for test preparation according to a certain percentage is prepared after completing, and layering is loaded on cylinder
It in native box 1, and consolidates up to filling cylindrical native box 1, then removes the extra soil sample 17 in cylindrical soil 1 edge of box, then use bolt
19 are fixed on endless metal backing plate 2 on cylindrical native box 1, fix after finishing, and continue the native sample of filling into cylindrical native box 1
17, keep soil sample 17 concordant with plane on endless metal backing plate 2, the bolt 20 of native lid plate 3 is finally fixed on cylindrical native box 1
On；
Step 3：After sample filling finishes, air compressor machine (9) and valve (14) are opened, pressure valve (11) to experiment is adjusted and sets
Fixed pressure, by the constant water pressure in water pocket (13) equably to pushing pressure load in soil sample (17)；
Step 4：After loaded, air compressor machine 9 is first closed, the valve 14 of 13 side of water pocket is turned off, finally removes water
14 hose 15 below of valve；
Step 5：The bolt 20 between native lid plate 3 and cylindrical native box 1 is removed, according to whether eliminating pull of vacuum
Influence, choose whether the bolt 23 for beating air hole 18 on cylindrical native box 1；
Step 6：16 one end of nylon rope connects water-storing bottle 5, and the other end connects 3 top of native lid plate around two fixed pulleys 4,
Wherein, the quality of water-storing bottle 5 is slightly less than the quality of native lid plate 3, and the of poor quality of the two is MDifference；
Step 7：Add water into water-storing bottle 5 by water supply bottle 7, flowmeter 6 is connected on the hose 15 of water supply bottle 7, to protect
Card sluggish flow smoothly flows into water-storing bottle 5；
Step 8：Add water into water-storing bottle 5, until native lid plate 3 and soil sample 17, interface is completely disengaged, and record supplies water at this time
The quality of bottle 7, determines the mass change M of water in water supply bottle 7Water, 7 end valve door 14 of water supply bottle is being closed, M is then usedWaterSubtract native box
The difference M of cover board 3 and 5 mass of water-storing bottleDifference, it is multiplied by gravity acceleration g again divided by native lid plate 3 and 17 contact area S of soil sample, i.e.,
P=(MWater-MDifference) g/S, wherein P is surveyed adhesive force, MWaterIt is continually changing, passes through P=(MWater-MDifference) g/S i.e. can determine it is glutinous
Attached power changes with time process, determines the peak value P of adhesive forcemax。
A kind of upper test method pushed soil and the adjustable clay of contact area and stick force test device, utilizes above-mentioned one
Soil is pushed in kind and the adjustable clay of contact area sticks force test device, carries out cohesive soil adhesive force measurement, it can be deduced that glutinous
The change of property soil and cohesive soil and metal surface adhesive force under the changing rule of the adhesive force on metal contact surface, different contacts area
The case where changing the adhesive force under situation and different cohesive soil parameters on cohesive soil and metal contact surface.
Specific embodiment is applied in the present invention to be expounded the principle and embodiment of invention, above example
Illustrate the method and core concept that are merely used to help understand the present invention；Meanwhile for those of ordinary skill in the art, foundation
The thought of the present invention, there will be changes in the specific implementation manner and application range, in conclusion the content of the present specification is not
It is interpreted as the limitation to invention.
Claims (8)
1. pushing soil in one kind and the adjustable clay of contact area stick force test device, which is characterized in that by cylindrical native box
(1), endless metal backing plate (2), native lid plate (3), fixed pulley group (4), water-storing bottle (5), flowmeter (6), water supply bottle (7), day
Flat (8), air compressor machine (9), for bucket (10), pressure valve (11), pressure gauge (12), water pocket (13), valve (14), hose (15) and
Nylon rope (16) collectively constitutes；
The endless metal backing plate (2) is fixed on by bolt (19) on cylindrical native box (1), cylindrical soil box (1) and annular
The position setting rubber ring (21) of metal caul (2) contact prevents particle or water in loading procedure in soil sample from entering annular gold
Belong to the contact gap of backing plate (2) and cylindrical native box (1)；
The soil lid plate (3) is fixed on by bolt (20) on cylindrical native box (1), ring above endless metal backing plate (2)
Shape metal caul (2) with native lid plate (3) contact surface close to endless metal backing plate (2) inner circle position, prevent by setting rubber ring (21)
Only the particle in loading procedure in soil sample or water are into the contact gap of the lid plate that buries (3) and endless metal backing plate (2)；
Described cylindrical native box (1) bottom centre position is provided with circular hole, and water pocket (13) bottom surface is bonded in cylindrical soil with seccotine
Box (1) inner bottom surface；
The water inlet of the water pocket (13) passes through hose (15) and water supply through the circular hole of cylindrical native box (1) bottom centre position
The connection of bucket (10) bottom, the setting pressure gauge (12) on for the hose (15) between bucket (10) bottom and cylindrical native box (1)
With valve (14)；
The top for bucket (10) is connect by hose (15) with air compressor machine (9), for bucket (10) top and air compressor machine
(9) pressure valve (11) and valve (14) are set on the hose (15) between.
2. it pushes soil in one kind according to claim 1 and the adjustable clay of contact area sticks force test device, it is special
Sign is, is uniformly provided with 4~6 air holes (18) in the same level of cylindrical soil box (1) side, air hole (18) inside is embedding
There is rubber ring (21), pastes water strainer (22) at cylindrical soil box (1) inside air hole (18)；
Cylindrical soil box (1) bottom centre position is provided with circular hole, and circular-hole internal-wall is Nian Jie with water pocket (13) water inlet by seccotine,
Water pocket (13) bottom surface and cylindrical native box (1) inner bottom surface strength glue sticking, wherein the shape of water pocket (13) is semielliptical
Shape；
The a port of pressure gauge (12) is connect by hose (15) with the water inlet of cylindrical native box (1) interior water pocket (13), separately
A port is used to measure the pressure in water pocket (13) during testing by hose (15) connecting valve (14).
3. it pushes soil in one kind according to claim 1 and the adjustable clay of contact area sticks force test device, it is special
Sign is that endless metal backing plate (2) has certain thickness, soil sample (17) stress in endless metal backing plate (2) inner circle region
Will be greater than inner circle perimeter, to solve the problems, such as survey try to get to the heart of a matter face and survey disk outer ledge cohere soil sample (17)；
The annular of various cross-sectional areas can be replaced in cohesive soil adhesive force test process according to the needs for testing different test areas
The adjustable function of force test device area is sticked in metal caul (2), realization.
4. it pushes soil in one kind according to claim 1 and the adjustable clay of contact area sticks force test device, it is special
Sign is that the test process for sticking force test device is divided into the load of soil-shifting body and drawing soil lid plate (3) progress on water pocket (13)
Adhesive force tests two stages.
5. it pushes soil in one kind according to claim 1 and the adjustable clay of contact area sticks force test device, it is special
Sign is that the setting of pressure valve (11) can set the constant pressure of different stage to soil sample (17) uniform load；
Constant pressure is set by pressure valve (11), is made the test method for pushing soil on bottom water pocket (13), is realized to soil sample
(17) function of uniform load allows soil sample (17) to be more uniformly distributed with native lid plate bottom surface contact stress.
6. it pushes soil in one kind according to claim 1 and the adjustable clay of contact area sticks force test device, it is special
Sign is, provides the pulling capacity of drawing soil lid plate (3) by the quality of the water of water supply bottle (7) reduction, water in water supply bottle (7)
Mass change can accurately reflect the change procedure of adhesive force between native lid plate (3) and soil sample (17).
7. it pushes soil in one kind according to claim 1 and the adjustable clay of contact area sticks force test device, it is special
Sign is that the upper pushing soil component in described device soil box (1) is one kind in water pocket, piston.
8. a kind of upper test method pushed soil and the adjustable clay of contact area and stick force test device, which is characterized in that adopt
Sticking force test device development examination with soil and the adjustable clay of contact area is pushed in claim 1-7 any one of them one kind
It tests, is as follows：
(1) connection type according to claim 1, which connects, sticks force test device, is discharged in water pocket (13) by extruding
Air, and close the valve (14) of water pocket (13) side；
(2) soil sample needed for test preparation (17) according to a certain percentage are prepared after completing, and layering is loaded on cylindrical native box
(1) it in, and is layered and hits real until filling cylindrical native box (1), then remove the cylindrical native extra soil sample in box (1) edge (17),
Endless metal backing plate (2) is fixed on cylindrical native box (1) with bolt (19) again, fixes after finishing, continues to cylinder
The native sample (17) of filling, keeps soil sample (17) concordant with plane on endless metal backing plate (2), finally by native lid plate (3) in native box (1)
It is fixed on cylindrical native box (1) with bolt (20)；
(3) after sample filling finishes, air compressor machine (9) and valve (14) are opened, adjusts pressure valve (11) to the pressure of experiment setting
Power, by the constant water pressure in water pocket (13) equably to pushing pressure load in soil sample (17)；
(4) after loaded, air compressor machine (9) is first closed, the valve (14) of water pocket (13) side is turned off, finally removes valve
(14) hose (15) below；
(5) bolt (20) between native lid plate (3) and cylindrical native box (1) is removed, according to whether eliminating pull of vacuum
Influence, choose whether the bolt (23) for beating air hole (18) on cylindrical native box (1)；
(6) nylon rope (16) one end connection water-storing bottle (5), the other end push up around two native lid plates (3) of fixed pulley (4) connection
Portion, wherein the quality of water-storing bottle (5) is slightly less than the quality of native lid plate (3), and the of poor quality of the two is MDifference；
(7) by water supply bottle (7) to water-storing bottle (5) Nei Jiashui, flowmeter (6) is connected on the hose (15) of water supply bottle (7), is allowed
Sluggish flow smoothly flows into water-storing bottle (5)；
(8) water supply bottle at this time is recorded to water-storing bottle (5) Nei Jiashui until native lid plate (3) and soil sample (17) interface are completely disengaged
(7) quality determines the mass change M of water supply bottle (7) interior waterWater, water supply bottle (7) end valve door (14) is being closed, M is then usedWaterSubtract
Remove the difference M of native lid plate (3) and water-storing bottle (5) qualityDifference, it is multiplied by gravity acceleration g again divided by native lid plate (3) and soil sample
(17) contact area S, i.e. P=(MWater-MDifference) g/S, wherein P is surveyed adhesive force, MWaterIt is continually changing, passes through P=
(MWater-MDifference) g/S can determine that adhesive force changes with time process, determines the peak value P of adhesive forcemax。
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| CN110031399A (en) * | 2019-05-05 | 2019-07-19 | 中交疏浚技术装备国家工程研究中心有限公司 | The method of adhesion strength between cutter tooth and the soil body is inquired by fine grained soil internal cohesion |
| CN110455712A (en) * | 2019-09-02 | 2019-11-15 | 南京林业大学 | A kind of sample preparation device and test method for being inverted sample preparation measurement special surface and Soil Interface adhesive force |
| CN110596112A (en) * | 2019-10-10 | 2019-12-20 | 南京林业大学 | Device and method for measuring influence of illumination temperature rise on adhesion |
| CN110631991A (en) * | 2019-10-11 | 2019-12-31 | 南京林业大学 | Test device for forming high-strength mud cake through wedging loading and adhesion force measuring method |
| CN114324147A (en) * | 2022-01-11 | 2022-04-12 | 苏州大学 | Device and method for testing interface friction performance of clay-based material |
| CN116930067A (en) * | 2023-09-19 | 2023-10-24 | 成都理工大学 | Device and method for measuring cementing strength of polluted rock face and consolidated body |
| CN110631991B (en) * | 2019-10-11 | 2024-06-04 | 南京林业大学 | Testing device for forming high-strength mud cake by wedging type loading and adhesion measuring method |
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| CN110031399A (en) * | 2019-05-05 | 2019-07-19 | 中交疏浚技术装备国家工程研究中心有限公司 | The method of adhesion strength between cutter tooth and the soil body is inquired by fine grained soil internal cohesion |
| CN110031399B (en) * | 2019-05-05 | 2021-08-24 | 中交疏浚技术装备国家工程研究中心有限公司 | Method for calculating adhesion force between cutter teeth and soil body by using cohesive force in fine-particle soil |
| CN110455712A (en) * | 2019-09-02 | 2019-11-15 | 南京林业大学 | A kind of sample preparation device and test method for being inverted sample preparation measurement special surface and Soil Interface adhesive force |
| CN110455712B (en) * | 2019-09-02 | 2024-03-22 | 南京林业大学 | Sample preparation device and test method for measuring adhesion force between special curved surface and soil interface by inverted sample preparation |
| CN110596112A (en) * | 2019-10-10 | 2019-12-20 | 南京林业大学 | Device and method for measuring influence of illumination temperature rise on adhesion |
| CN110596112B (en) * | 2019-10-10 | 2023-10-20 | 南京林业大学 | Device and method for measuring influence of illumination heating on adhesion |
| CN110631991A (en) * | 2019-10-11 | 2019-12-31 | 南京林业大学 | Test device for forming high-strength mud cake through wedging loading and adhesion force measuring method |
| CN110631991B (en) * | 2019-10-11 | 2024-06-04 | 南京林业大学 | Testing device for forming high-strength mud cake by wedging type loading and adhesion measuring method |
| CN114324147A (en) * | 2022-01-11 | 2022-04-12 | 苏州大学 | Device and method for testing interface friction performance of clay-based material |
| CN116930067A (en) * | 2023-09-19 | 2023-10-24 | 成都理工大学 | Device and method for measuring cementing strength of polluted rock face and consolidated body |
| CN116930067B (en) * | 2023-09-19 | 2023-12-19 | 成都理工大学 | Device and method for measuring cementing strength of polluted rock face and consolidated body |
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Application publication date: 20181016 |