CN109030340A - A kind of self-expanding Load-unload device and method - Google Patents
A kind of self-expanding Load-unload device and method Download PDFInfo
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- CN109030340A CN109030340A CN201810779216.0A CN201810779216A CN109030340A CN 109030340 A CN109030340 A CN 109030340A CN 201810779216 A CN201810779216 A CN 201810779216A CN 109030340 A CN109030340 A CN 109030340A
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- 238000000034 method Methods 0.000 title abstract description 14
- 239000011229 interlayer Substances 0.000 claims abstract description 90
- 239000011435 rock Substances 0.000 claims abstract description 59
- 238000005192 partition Methods 0.000 claims abstract description 32
- 239000004067 bulking agent Substances 0.000 claims abstract description 16
- 230000006378 damage Effects 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 48
- 239000004568 cement Substances 0.000 claims description 29
- 239000003795 chemical substances by application Substances 0.000 claims description 16
- 239000010410 layer Substances 0.000 claims description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 12
- 229910052799 carbon Inorganic materials 0.000 claims description 12
- 239000004744 fabric Substances 0.000 claims description 12
- 230000008961 swelling Effects 0.000 claims description 12
- 238000009413 insulation Methods 0.000 claims description 11
- 239000002002 slurry Substances 0.000 claims description 11
- 239000004590 silicone sealant Substances 0.000 claims description 10
- 239000003292 glue Substances 0.000 claims description 5
- 239000002023 wood Substances 0.000 claims description 5
- 230000000694 effects Effects 0.000 claims description 4
- 239000010720 hydraulic oil Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 238000011017 operating method Methods 0.000 claims description 3
- 239000003755 preservative agent Substances 0.000 claims description 3
- 230000002335 preservative effect Effects 0.000 claims description 3
- 238000003032 molecular docking Methods 0.000 claims description 2
- 239000000835 fiber Substances 0.000 claims 1
- 238000002591 computed tomography Methods 0.000 abstract description 11
- 238000012544 monitoring process Methods 0.000 abstract description 4
- 238000004088 simulation Methods 0.000 abstract description 3
- 206010061245 Internal injury Diseases 0.000 description 11
- 238000012360 testing method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000013519 translation Methods 0.000 description 3
- 239000011398 Portland cement Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000008400 supply water Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000010348 incorporation Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000005439 thermosphere Substances 0.000 description 1
- 238000004078 waterproofing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
Abstract
The invention discloses a kind of self-expanding Load-unload device and methods, it includes the cuboid container with interlayer；The cuboid container includes bottom plank, and the top of the bottom plank surrounds rectangular parallelepiped structure by vertical plank and lateral plank assembly；A plurality of notch is machined on the bottom plank, the notch upper limit is equipped with partition, and rectangular parallelepiped structure is separated into load interlayer, unloading interlayer and rock sample interlayer.Pass through the difference of the different simulation loading power of bulking agent levels, pass through pressure-relief valve and pressure gauge, control different unloading force sizes, cooperate CT scan can real-time monitoring, rock interior under each stage stress condition of Load-unload damages variation, provides simple and practical method for the variation of the damage of rock caused by differently stress in later application to engineering practice.
Description
Technical field
The present invention relates to it is a kind of not only can in laboratory test but also can in a kind of equipment without electric powerless field construction,
More particularly to a kind of self-expanding Load-unload device and method applied to CT scan.
Background technique
Existing loading equipemtn such as gravitational load capacity value cannot be very big, and operation is heavy and takes a lot of work；The investment of hydraulic loaded
Greatly, maintenance cost is higher, using being subject to certain restrictions；Rock sample inner surface can not be observed directly in air pressure simulation loading；Electromagnetism adds
The exciting force of load less etc., cannot be suitable for the detection of rock interior damage variation well.And existing CT scan needs
Otherwise artifact can be generated by releasing the constraint being attached on rock sample.Will not only artifact be generated currently not yet but also do not need constraint relief
Loading equipemtn occurs.
Summary of the invention
A kind of technical problem to be solved by this invention is the self-expanding Load-unload device and method applied to CT scan,
Different unloading force sizes are controlled, are matched by pressure-relief valve and pressure gauge by the difference of the different simulation loading power of bulking agent levels
Close CT scan can real-time monitoring, rock interior under each stage stress condition of Load-unload damages variation, real for later engineering
It tramples the variation of the damage of rock caused by differently stress in application and provides simple and practical method.
In order to realize above-mentioned technical characteristic, the object of the present invention is achieved like this: a kind of self-expanding Load-unload dress
It sets, it includes the cuboid container with interlayer；The cuboid container includes bottom plank, and the top of the bottom plank is logical
It crosses vertical plank and lateral plank assembly surrounds rectangular parallelepiped structure；A plurality of notch, the notch are machined on the bottom plank
Upper limit is equipped with partition, and rectangular parallelepiped structure is separated into load interlayer, unloading interlayer and rock sample interlayer.
The position that the partition is matched with lateral plank is machined with notch, smears in the position that partition is matched with notch
There is silicone sealant.
It is connected between the vertical plank and lateral plank by mortise-tenon joint structure.
The bottom plank, vertical plank and lateral plank all use wood material, and do preservative treatment, in the outer of plank
Surface all uses multi-storey up-down and translation cooperation AB glue to be wrapped up.
The partition uses plank or PVC board, is enclosed with carbon cloth in the outside of partition.
Be provided with thermal insulation layer on the partition, be provided with pressure sensor between partition inside thermal insulation layer, it is described every
Thermosphere, pressure sensor and partition are integrally wrapped in carbon cloth.
The load interlayer shares multiple, is equipped with water valve on load interlayer, the water valve and load interlayer junction
It is coated with silicone sealant, is provided with spool on the water outlet pipe of water valve, is provided with inside the water outlet of water valve and controls it
Closed valve switch is provided with water outlet closure plate in the water outlet end of water valve；Inside the water valve configuration flowmeter and
Solenoid valve, the flowmeter and solenoid valve are connected with singlechip controller, and control water entrance number.
The expanding cement mixed with different bulking agent levels is loaded in the load interlayer respectively.
Pressure-relief valve and pressure gauge are installed inside the unloading interlayer, by unloading the pressure-relief valve and pressure gauge of interlayer, come
Unloading force size is controlled, and the damage variation that rock sample unloads inside after power, and the interlayer place of interfacing silicone seal are observed with this
Glue, which is obturaged, guarantees its air-tightness.
Using the operating method of self-expanding Load-unload device described in any one, comprising the following steps:
1) bottom plank and lateral plank with notch are made and makes vertical plank, it is then passed through into mortise-tenon joint knot
Structure is spliced into wooden cuboid container；
2) partition is wrapped up using carbon cloth, and thermal insulation layer and pressure sensor is set inside it, and by itself and bottom
Notch docking on portion's plank, forms multiple load interlayers and unloading interlayer and rock sample interlayer；
3) it is put into the cement for having mixed swelling agent inside load interlayer, hydraulic oil or water are put into inside unloading interlayer, in rock
Rock sample is put into inside sample interlayer；
4) by the expansion cement slurry self-expanding effect in load interlayer, loading force is applied to rock sample, and by changing swelling water
Bulking agent levels in mud simulate different grades of loading force；
5) after the completion of loading, by unloading the pressure-relief valve and pressure gauge of interlayer, to control unloading force size, formed self-expanding add,
Discharge mechanism.
The present invention compared with prior art, has the beneficial effect that
1, for metal equipment, in CT scan, the CT image shown can generate artifact in imaging process, these artifacts
Picture quality can be reduced, or even affects the analyzing and diagnosing to rock interior damage variation, and the present apparatus does not use metal parts,
The artifact occurred in CT scan can be eliminated.
2, the present invention is the expansion cement slurry by being equipped with different bulking agent levels in load interlayer, is made using its self-expanding
With, and using the difference of bulking agent levels in expansion cement slurry, different stage loading force is provided, CT scan is cooperated, can be obtained not
Situation of change is damaged with the rock interior under loading force state.
3, the present invention observes the damage variation of the rock interior under unloaded state, operation letter by pressure-relief valve and pressure gauge
It is single, it is at low cost.
4, the present invention is in CT scan, and without solving de-stress, guarantee rock sample in this way is in stress always during the scanning process
State, and then internal injury variation of the real-time monitoring rock sample under stress.
5, the present invention is not necessarily to electric power and oil pressure, therefore at field, can be used as loading equipemtn use, easy to operate,
It is at low cost.
6, using swelling agent, phase, form tend towards stability the present invention after curing, and the long-term hold mode of energy is constant, can will load
Device is directly placed with rock mass, carries out rock mass original position creep test with this, and study its Creep Rule, without other load
Equipment, simple to operate, save the cost, and it is very suitable to field operation.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples.
Fig. 1 is apparatus of the present invention top view.
Fig. 2 is apparatus of the present invention fluting plank drawing.
Fig. 3 is the vertical mortise-tenon joint structural schematic diagram of apparatus of the present invention plank.
Fig. 4 horizontal mortise-tenon joint structural schematic diagram between the small wooden box of apparatus of the present invention.
Fig. 5 is apparatus of the present invention water valve schematic diagram.
Fig. 6 is that drawing is arranged in apparatus of the present invention valve outlets.
In figure: load interlayer 1, unloading interlayer 2, rock sample interlayer 3, vertical plank 4, partition 5, lateral plank 6, mortise-tenon joint
Structure 7, notch 8, bottom plank 9, valve switch 10, spool 11, water outlet closure plate 13.
Specific embodiment
Embodiments of the present invention are described further with reference to the accompanying drawing.
Embodiment 1:
Referring to Fig.1-6, a kind of self-expanding Load-unload device, it includes the cuboid container with interlayer；The cuboid container
Including bottom plank 9, the top of the bottom plank 9 surrounds rectangular parallelepiped structure by vertical plank 4 and 6 assembly of lateral plank；
A plurality of notch 8 is machined on the bottom plank 9,8 upper limit of notch is equipped with partition 5, and rectangular parallelepiped structure is separated
At load interlayer 1, unloading interlayer 2 and rock sample interlayer 3.By using above-mentioned apparatus, mainly utilize expansion cement slurry from swollen
Swollen effect, provides loading force, can be in the case where not releasing its stress state, in real time when solving CT scan observation rock sample internal injury
The problem of monitoring the internal injury variation of rock sample under different brackets Load-unload power；Furthermore the present invention is not necessarily to electric power and oil pressure, can be
Operated in the case of field, and phase, form tend towards stability swelling agent after curing, can long-term hold mode it is constant, rock is carried out with this
Body original position creep test, and study its rule.
Further, the position that the partition 5 is matched with lateral plank 6 is machined with notch 8, in partition 5 and notch phase
The position of cooperation is coated with silicone sealant.It is sealed by silicone sealant, forms it into interlayer.
Further, it is connected between the vertical plank 4 and lateral plank 6 by mortise-tenon joint structure 7.Connected using Tenon
Binding structure 7 simplifies its connection procedure.And it ensure that its connective stability.
Further, the bottom plank 9, vertical plank 4 and lateral plank 6 all use wood material, and do at anti-corrosion
Reason all uses multi-storey up-down and translation cooperation AB glue to be wrapped up in the outer surface of plank.Plank is wrapped up, it is therefore intended that reinforce wood
The intensity of plate and water-proofing treatment is done to it.Timber used in device has done preservative treatment, guarantees its durability.
Further, the partition 5 uses plank or PVC board, is enclosed with carbon cloth in the outside of partition 5.
Further, it is provided with thermal insulation layer on the partition 5, is provided with pressure biography between partition 5 inside thermal insulation layer
Sensor, the thermal insulation layer, pressure sensor and 5 entirety of partition are wrapped in carbon cloth.Partition is wrapped up by carbon cloth
PVC board, it is therefore intended that so that partition is generated plastic deformation by expansion, the pressure suffered by it is then passed into rock sample, it is complete
The load of pairs of rock sample.Purpose is to prevent pressure sensor heat damage, and it is big by pressure sensor to characterize its loading force
It is small.
Further, the load interlayer 1 shares multiple, and water valve, the water valve and load are equipped on load interlayer 1
1 junction of interlayer is coated with silicone sealant, and spool 11 is provided on the water outlet pipe of water valve, inside the water outlet of water valve
Provided with its closed valve switch 10 is controlled, the water outlet end of water valve is provided with water outlet closure plate 13；The water valve
Inside configuration flowmeter and solenoid valve, the flowmeter and solenoid valve are connected with singlechip controller, and control water entrance
How much.It is to supply water by 10 purpose of valve switch and completes to close, prevents it from answering the expansion of expansion cement slurry and blocking,
It influences to supply water next time.At cement interlayer center of the water outlet insertion of water valve each equipped with incorporation swelling agent, it is therefore intended that guarantee
Expanding cement reacts uniform after adding water.
Further, the expanding cement mixed with different bulking agent levels is loaded in the load interlayer 1 respectively.Purpose exists
In by changing the bulking agent levels in expansion cement slurry, different grades of loading force is simulated, a load peak value is so far reached.
The uniform expansion cement slurry of mix can be poured in small cuboid container, provide pressure with this, after its expansion is stablized, spelled
Tipping has the small cuboid container of different bulking agent levels cement slurries, provides the pressure of different stage with this.
Further, pressure-relief valve and pressure gauge are installed inside the unloading interlayer 2, by unload interlayer pressure-relief valve and
Pressure gauge to control unloading force size, and observes the damage variation that rock sample unloads inside after power with this, and the interlayer place of interfacing uses
Silicone sealant, which is obturaged, guarantees its air-tightness.
Further, which can load it stress locking, carry out rock mass original position creep test with this, and it is compacted to study its
Become rule.
Embodiment 2:
Using the operating method of self-expanding Load-unload device described in any one, comprising the following steps:
1) bottom plank 9 and lateral plank 6 with notch 8 are made and makes vertical plank 4, it is then passed through into Tenon and is connected
Binding structure 7 is spliced into wooden cuboid container；
2) partition 5 is wrapped up using carbon cloth, and thermal insulation layer and pressure sensor is set inside it, and by itself and bottom
Notch 8 on portion's plank 9 docks, and forms multiple load interlayers 1 and unloading interlayer 2 and rock sample interlayer 3；
3) it is put into the cement for having mixed swelling agent inside load interlayer 1, is put into hydraulic oil or water inside unloading interlayer 2,
Rock sample is put into inside rock sample interlayer 3；
4) by the expansion cement slurry self-expanding effect in load interlayer 1, loading force is applied to rock sample, and by changing swelling water
Bulking agent levels in mud simulate different grades of loading force；
5) after the completion of loading, by unloading the pressure-relief valve and pressure gauge of interlayer 2, to control unloading force size, formed self-expanding add,
Discharge mechanism.
Embodiment 3:
The plank made and PVC partition are assembled into the cuboid container with interlayer, form several interlayers, be divided into load every
Layer, unloading interlayer and rock sample interlayer three parts are placed, and the application pressing force sensor on interlayer board, and to adding a layer nano heat-insulating plate
Do heat-insulated processing.
In plank container, a length of 5cm of the small interlayer of each load, it is wide and it is high be 20cm；The a length of 15cm of interlayer is unloaded, it is wide
It is 20cm with height, the interlayer length and width and height for loading rock sample are 20cm.
Expanding cement is placed in load interlayer, and the expanded agent cement paste of different content, preparation method is as follows:
Preparing bulking agent levels is 10%, 15%, 20%, 25%, 30% expanded agent cement paste takes ordinary portland cement
1800g, 1700g, 1600g, totally 5 groups of 1500g, 1400g.Take swelling agent 200g, 300g, 400g again, 500g, 600g and by group
It number is successively labeled as A1, A2, A3, the weighed cement of institute, swelling agent are poured into agitator and stirred evenly by A4, A5, then by it from leaning on
Nearly unloading that end of interlayer is counted, and according to the sequence of bulking agent levels size, is successively poured into corresponding load interlayer respectively.
Hydraulic oil is filled in unloading interlayer, and rock sample is put into the interlayer for loading rock sample, then by entire cuboid
The wooden cover closure of upper vessel portion, and cooperate AB glue wrapped multiple carbon cloth.
Whole device is placed in CT Scanner, rock sample internal structure under no loading force is observed and recorded, then will unload
Pressure valve is closed, and the valve of A1 group water valve is opened, and after water supply is a certain amount of, the pressure data of observed pressure sensor is used in combination
CT scanner scans rock sample under stress, and internal injury variation records data.
The valve for closing A1 group water valve, successively by the valve of the A1 group water valve of A2 group, A3 group, A4 group, A5 group
It opens, observes and records the pressure sensor data under different bulking agent levels, be characterized under different loading force states with this, rock
The variation of sample internal injury.
Load reach peak value and recorded the correlation test data under stress state after, record at this time pressure gauge data and with
This pressure value divides unloading grade, then opens pressure-relief valve, controls unloading force size according to pressure gauge, observes and records rock sample
Under unloaded state, internal injury variation.
The data obtained is arranged, the analysis for the rock sample internal injury variation that rock sample is reflected in load and uninstall process is obtained
Table.
Embodiment 4:
The plank made and PVC board are assembled into the cuboid container with interlayer, form unloading interlayer and place rock sample every
Layer two parts, and the application pressing force sensor on interlayer board, and to adding a layer nano heat-insulating plate to do heat-insulated processing；Loading interlayer, this is
Independent small cuboid box is spliced.
In plank container, the individual boxes of load interlayer to be by length, width and height be respectively 5cm, 20cm, 20cm, using vertical tenon
The connection type of fourth of the twelve Earthly Branches structure is spliced, and junction is sealed with silicone sealant；Unload a length of 15cm of interlayer, it is wide and high be
20cm, the interlayer length and width and height for loading rock sample are 20cm.Be arranged load fine sand a length of 15cm of interlayer, load rock sample every
The a length of 20cm of layer；The width and height of all interlayers are 20cm.
In the expanded agent cement paste for preparing different content, preparation method is as follows:
Preparing bulking agent levels is 10%, 15%, 20%, 25%, 30% expanded agent cement paste takes ordinary portland cement
1800g, 1700g, 1600g, totally 5 groups of 1500g, 1400g.Swelling agent 200g, 300g, 400g are taken again, and 500g, 600g will be alleged
The cement that takes, swelling agent be corresponding to be poured into agitator and stirs evenly, then weighs up 5 groups of 50 degrees centigrades of warm water, every group of 700g, and will
It pours into expanding cement and stirs evenly；It is subsequently poured into corresponding box, and its group number is successively labeled as B1, B2, B3,
B4, B5.
After B1 group fills up expanded agent cement paste, the small cuboid box top of cover closure wrapped up with multi-storey up-down and translation,
This box is connect with there is the cuboid container of unloading interlayer and rock sample interlayer again, connection type is the connection of horizontal joinery and its construction,
The pressure data of observed pressure sensor again, and changed with CT scanner scanning rock sample internal injury, record data；
Successively the expanded agent cement paste of B2 group, B3 group, B4 group, B5 group is filled up, is observed in each group of operating process
The pressure data of pressure sensor, and pressure data is successively recorded, successively CT scan rock sample internal injury changes；
After load reaches peak value and recorded the correlation test data under stress state, records pressure gauge data at this time and pressed with this
Force value divides unloading grade, then opens pressure-relief valve, controls unloading force size according to pressure gauge, observes and records rock sample and unloading
Under load state, internal injury variation.
The data obtained is arranged, the analysis for the rock sample internal injury variation that rock sample is reflected in load and uninstall process is obtained
Table.
Above-described embodiment is used to illustrate the present invention, rather than limits the invention, in spirit of the invention and
In scope of protection of the claims, to any modifications and changes that the present invention makes, protection scope of the present invention is both fallen within.
Claims (10)
1. a kind of self-expanding Load-unload device, it is characterised in that: it includes the cuboid container with interlayer；The cuboid
Container includes bottom plank (9), and the top of the bottom plank (9) is surrounded by vertical plank (4) and lateral plank (6) assembly
Rectangular parallelepiped structure；It being machined with a plurality of notch (8) on the bottom plank (9), notch (8) upper limit is equipped with partition (5),
And rectangular parallelepiped structure is separated into load interlayer (1), unloading interlayer (2) and rock sample interlayer (3).
2. a kind of self-expanding Load-unload device according to claim 1, it is characterised in that: the partition (5) and lateral wood
The position that plate (6) matches is machined with notch (8), is coated with silicone sealant in the position that partition (5) is matched with notch.
3. a kind of self-expanding Load-unload device according to claim 1, it is characterised in that: the vertical plank (4) and side
It is connected to mortise-tenon joint structure (7) are passed through between plank (6).
4. a kind of self-expanding Load-unload device according to claim 1, it is characterised in that: the bottom plank (9) is erected
Wood material is all used to plank (4) and lateral plank (6), and does preservative treatment, all uses multilayer carbon in the outer surface of plank
Fiber cloth cooperation AB glue is wrapped up.
5. a kind of self-expanding Load-unload device according to claim 1, it is characterised in that: the partition (5) uses plank
Or PVC board, carbon cloth is enclosed in the outside of partition (5).
6. a kind of self-expanding Load-unload device according to claim 1, it is characterised in that: be provided on the partition (5)
Thermal insulation layer is provided with pressure sensor, the thermal insulation layer, pressure sensor and partition inside thermal insulation layer between partition (5)
(5) whole to be wrapped in carbon cloth.
7. a kind of self-expanding Load-unload device according to claim 1, it is characterised in that: the load interlayer (1) is shared
It is multiple, water valve is installed in load interlayer (1), the water valve and load interlayer (1) junction are coated with silicone sealant,
It is provided with spool (11) on the water outlet pipe of water valve, is provided with inside the water outlet of water valve and controls its closed valve switch
(10), the water outlet end of water valve is provided with water outlet closure plate (13)；Configuration flowmeter and solenoid valve inside the water valve,
The flowmeter and solenoid valve are connected with singlechip controller, and control water entrance number.
8. a kind of self-expanding Load-unload device according to claim 1, it is characterised in that: divide in the load interlayer (1)
It is not loaded with the expanding cement mixed with different bulking agent levels.
9. a kind of self-expanding Load-unload device according to claim 1, it is characterised in that: the unloading interlayer (2) is internal
Pressure-relief valve and pressure gauge are installed, by unloading the pressure-relief valve and pressure gauge of interlayer, to control unloading force size, and observed with this
Rock sample unloads the damage variation of inside after power, and the interlayer place of interfacing is obturaged with silicone sealant and guarantees its air-tightness.
10. using the operating method of self-expanding Load-unload device described in claim 1-9 any one, it is characterised in that including
Following steps:
1) bottom plank (9) and lateral plank (6) with notch (8) are made and is made vertical plank (4), is then led to
It crosses mortise-tenon joint structure (7) and is spliced into wooden cuboid container；
2) partition (5) are wrapped up using carbon cloth, and thermal insulation layer and pressure sensor are set inside it, and by its with
Notch (8) docking on bottom plank (9), forms multiple load interlayers (1) and unloading interlayer (2) and rock sample interlayer (3)；
3) be put into inside load interlayer (1) and mixed the cement of swelling agent, be put into inside unloading interlayer (2) hydraulic oil or
Water is put into rock sample inside rock sample interlayer (3)；
4) by the expansion cement slurry self-expanding effect in load interlayer (1), loading force is applied to rock sample, and by changing expansion
Bulking agent levels in cement slurry simulate different grades of loading force；
5) after the completion of loading, by unloading the pressure-relief valve and pressure gauge of interlayer (2), to control unloading force size, self-expanding is formed
Load-unload device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810779216.0A CN109030340B (en) | 2018-07-16 | 2018-07-16 | Self-expansion loading and unloading device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810779216.0A CN109030340B (en) | 2018-07-16 | 2018-07-16 | Self-expansion loading and unloading device and method |
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| CN109030340A true CN109030340A (en) | 2018-12-18 |
| CN109030340B CN109030340B (en) | 2021-02-19 |
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| CN201810779216.0A Active CN109030340B (en) | 2018-07-16 | 2018-07-16 | Self-expansion loading and unloading device and method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109406284A (en) * | 2019-01-10 | 2019-03-01 | 中国矿业大学(北京) | A kind of unequal stress loading device for mechanical test |
| CN110044683A (en) * | 2019-04-08 | 2019-07-23 | 三峡大学 | The device and method of rock bridge tension resistance creep between a kind of instrument connection using swelling agent |
| CN110296899A (en) * | 2019-07-11 | 2019-10-01 | 三峡大学 | The test method of unpowered stress locking study of rocks creep |
| CN110749497A (en) * | 2019-12-06 | 2020-02-04 | 大连理工大学 | Rock creep triaxial test system and method for continuous water environment effect |
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| CN110296899A (en) * | 2019-07-11 | 2019-10-01 | 三峡大学 | The test method of unpowered stress locking study of rocks creep |
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| CN110749497A (en) * | 2019-12-06 | 2020-02-04 | 大连理工大学 | Rock creep triaxial test system and method for continuous water environment effect |
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