CN106525567A - Rock time-dependent deformation testing system under combined effect of continuous water environment and variable temperature - Google Patents
Rock time-dependent deformation testing system under combined effect of continuous water environment and variable temperature Download PDFInfo
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- CN106525567A CN106525567A CN201611219584.7A CN201611219584A CN106525567A CN 106525567 A CN106525567 A CN 106525567A CN 201611219584 A CN201611219584 A CN 201611219584A CN 106525567 A CN106525567 A CN 106525567A
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- shell
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/18—Performing tests at high or low temperatures
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to a rock time-dependent deformation testing system under a combined effect of a continuous water environment and a variable temperature. A stand column is fixed on a base, a beam is arranged at the upper end of the stand column, a hydraulic cylinder is arranged on the beam, a pressure sensor and a pressure head are connected to the outer end of a piston rod matched with the hydraulic cylinder in sequence, multiple stacked adjusting blocks are arranged on the portion, below the pressure head, of the base, a bearing pillar is fixed to the adjusting block located at the upper end, and a testing box is arranged at the upper end of the bearing pillar; the testing box comprises a shell made of a ceramic material, the bottom face of the shell is provided with a hole matched with a bearing pillar, the bearing pillar is provided with a step supporting the shell which is internally provided with an inner container, the middle portion of the bottom face of the inner container makes contact with the upper end face of the bearing pillar, the inner side of the bottom face of the inner container is provided with a groove containing a lower backing plate, the side wall of the shell is internally provided with a heater, the shell is provided with an upper cover which is provided with a vent hole and a water pipe supplementing water to the inner container, and bosses are arranged at the middle positions of the upper surface and the lower surface of the upper cover. The structure is simple, and operation is easy.
Description
Technical field
The invention belongs to rock mechanics experiment technical field, it is related to a kind of rock continuing, under the water environment of temperature-changeable
Secular distortion pilot system, it is adaptable to rock secular distortion, the full mistake of damage under the environmental condition such as different solutions, different temperatures
Journey is analyzed.
Background technology
The long-term strength of rock is the important indicator for weighing rock mass engineering project stability.Rock and rock mass are under engineering state
Long-term mechanical property and behavior, always can significantly show the feature relevant with the time, wherein environmental factorss such as water, temperature etc.
Very big is affected on the long-term mechanical characteristic of rock.The examination for rock mechanics being affected about rock high-temerature creep or moisture content at present
Test a lot, but have the disadvantage that：（1）Aqueous solution is not accounted in rock（Body）In migration be time dependent mistake
Journey, thus be difficult to study influence of dynamic migration process of the aqueous solution in rock to rock secular distortion feature, it is also difficult
Being changed with the soda acid content and mineralogical composition studied in aqueous solution causes rock interior aqueous solution state to change, and then to timeliness
Deformation behaviour produces impact；（2）Rock is not accounted for（Body）It is non-conductor, conduction time of the temperature in rock is slow,
Thus be difficult to study the long-time stability of rock under temperature dynamic change condition；（3）Not accounting for existing aqueous solution has temperature again
Under the multiple environment combined effect that degree affects, the dynamic migration of aqueous solution and temperature in rock is to rock secular distortion feature
Influence.Rock mass in Practical Project, is subject to mostly to continue the influence of aqueous solution and alternating temperature, how truly to reflect
Complex environment residing for rock mass, and its long-term mechanical characteristic affected by environment is studied for objective rational evaluation rock mass engineering project
Reliability, safety and validity period be very necessary.
The content of the invention
It is an object of the invention to provide a kind of simple structure, easy to operate, rock sample can respectively in various water quality environments, anhydrous
Carry out secular distortion failure test system under environment, varying temperature environment in real time, overcome the deficiencies in the prior art.
Rock secular distortion pilot system under the lasting water environment and variable temperature collective effect of the present invention, the bottom of including
Seat, is fixed with column on base, is provided with crossbeam in the upper end of column, be provided with the liquid connected with hydraulic control device on crossbeam
Cylinder pressure, the external end head of the piston rod matched with hydraulic cylinder are connected with pressure transducer and pressure head in turn, and the lower section of pressure head is located at bottom
Seat is provided with multiple adjustment blocks for stacking, and in the adjustment block of upper end is fixed with cushion cap post, is provided with test in cushion cap post upper end
Casing；
Described test casing includes the housing of ceramic material, is provided with the hole matched with the cushion cap post in the bottom surface of housing, holds
There is the step for supporting housing on important actor, be furnished with inner bag in housing, contact with the upper surface of cushion cap post in the middle part of the bottom surface of inner bag,
There is the groove for being put into lower bolster in the inside bottom surface of inner bag, be provided with the heating connected with control device in the interior of housing
Part, the place suitable for reading of housing are furnished with upper lid, and upper lid is provided with steam vent and the filling pipe to moisturizing in inner bag, above the Shang Gai and
Middle position below has boss.
Rock secular distortion pilot system under the lasting water environment and variable temperature collective effect of the present invention, during use,
It is the inner bag centre position that column rock sample is vertically placed in test box inside by tested rock mass, rock sample lower surface is seated lower bolster
On, in rock sample upper ends upper padding plate, the following boss of upper lid is located on upper padding plate, and pressure head is under the drive of hydraulic cylinder to moving down
Dynamic, lid, upper padding plate and rock sample press and keep the pressure for setting upwards, add test water as needed into proof box body,
Acoustic emission sensor and ess-strain collection sensor, acoustic emission sensor and Acoustic radiating instrument and control device are set on rock sample
Connect, ess-strain collection sensor is connected with dynamic stress and strain Acquisition Instrument and control device, and control device includes digital control
Device processed, servo controller；Heating member is heated to the water in inner bag under control device control, makes water temperature be maintained at setting
Temperature range is interior or controls temperature change on request, and the gas produced by gallbladder can be discharged by steam vent, and the water yield in gallbladder subtracts
When few, moisturizing can be carried out by filling pipe and water supply installation, and liquid level is carried out by the liquid level sensor and control device in gallbladder
Control.Can deformation and failure process of the real time record rock sample under different water environments, different water temperatures in whole process of the test.Rock
Response after sample stand under load is converted into signal transmission in the external Acoustic radiating instrument of proof box and dynamic stress and strain Acquisition Instrument, finally
Show the stress-strain state of rock and the crack propagation process of inside on computers in real time.If need not be in water environment
Under tested, can be taken off inner bag（As shown in Figure 2）, realize the creep of rock experiment for there was only under temperature action.The present invention be
System overall structure is simple, easy to operate.
Description of the drawings
Fig. 1 is the structural representation of the specific embodiment of the invention；
Fig. 2 is structural representation when taking out inner bag in the present invention, making rock sample be tested in the uniform temperature field.
Specific embodiment
As shown in Figure 1：The lasting water environment of the present invention tests system with the rock secular distortion under variable temperature collective effect
System, including base 1, is fixed with symmetrically arranged column 2 on base 1, is provided with crossbeam 10 in the upper end of column 2, in crossbeam 10
The hydraulic cylinder 9 connected with hydraulic control device is provided with, the external end head of the piston rod matched with hydraulic cylinder 9 is connected with turn and control
Pressure transducer 8 and pressure head 21 that device processed connects, the lower section of pressure head 21 are provided with multiple adjustment blocks 3 for stacking positioned at base 1,
Cushion cap post 4 is fixed with the adjustment block 3 of upper end, test casing is provided with 4 upper end of cushion cap post.
Wherein testing casing includes the housing 19 of ceramic material, is provided with the hole matched with cushion cap post 4 in the bottom surface of housing 19,
There is the step for supporting housing 19 on cushion cap post 4, housing 19 is seated on cushion cap post 4, be furnished with inner bag 18, inner bag in housing 19
Contact with the upper surface of cushion cap post 4 in the middle part of 18 bottom surface.There is the groove for being put into lower bolster 20 in the inside bottom surface of inner bag 18, under
Backing plate 20 is located in the groove.The electric heating part 16 that connects with control device is provided with and by side cover in the interior of housing 19
17 fixed installations.The place suitable for reading of housing 19 is furnished with upper lid 12, is seam insert structure between 19 place suitable for reading of housing and upper lid 12.On
Lid 12 is provided with steam vent 11 and the filling pipe 7 to moisturizing in inner bag 18, the inner side of the outlet 6 of filling pipe 7 towards inner bag 18,
To facilitate the moisturizing in 18 inner chamber of inner bag.There is boss with middle position below above upper lid 12.
It is as follows using process：It is 18 interposition of inner bag that column rock sample 14 is vertically placed in test box inside by tested rock mass
Put, 14 lower surface of rock sample is seated on lower bolster 20, in 14 upper ends upper padding plate 13 of rock sample, the boss below upper lid 12 is located at
On upper padding plate 13, pressure head 21 is moved down under the drive of hydraulic cylinder 9, and lid 12, upper padding plate 13 and rock sample 14 press and protect upwards
The pressure of setting is held, as needed into proof box body（The inner chamber of inner bag 18）Add test water, the setting sound on rock sample 14
Emission sensor 5 and ess-strain collection sensor 15, acoustic emission sensor 5 are connected with Acoustic radiating instrument and control device, stress
Strain acquirement sensor 15 is connected with dynamic stress and strain Acquisition Instrument and control device, and control device includes digitial controller, watches
Take controller；Heating member 16 is heated to the water in inner bag 18 under control device control, makes water temperature be maintained at design temperature
In the range of or control temperature change on request, in gallbladder produced by gas can be discharged by steam vent 11, the discharge reduction in gallbladder
When, moisturizing can be carried out by filling pipe 7 and water supply installation, and liquid level control is carried out by the liquid level sensor and control device in gallbladder
System.Can deformation and failure process of the real time record rock sample under different water environments, different water temperatures in whole process of the test.Rock sample
Response after 14 stands under load is converted into signal transmission in the external Acoustic radiating instrument of proof box and dynamic stress and strain Acquisition Instrument, finally
Show the stress-strain state of rock and the crack propagation process of inside on computers in real time.If need not be in water environment
Under tested, can be taken off inner bag 18（As shown in Figure 2）, only tested at a certain temperature.
Claims (1)
- It is 1. a kind of to continue water environment and the rock secular distortion pilot system under variable temperature collective effect, it is characterised in that：Bag Include base（1）, in base（1）On be fixed with column（2）, in column（2）Upper end be provided with crossbeam（10）, in crossbeam（10）On set There is the hydraulic cylinder connected with hydraulic control device（9）, with hydraulic cylinder（9）The external end head of the piston rod of matching is connected with pressure in turn Sensor（8）And pressure head（21）, pressure head（21）Lower section be located at base（1）It is provided with multiple adjustment blocks for stacking（3）, positioned at upper The adjustment block at end（3）On be fixed with cushion cap post（4）, in cushion cap post（4）Upper end is provided with test casing；Described test casing includes the housing of ceramic material（19）, in housing（19）Bottom surface be provided with and the cushion cap post（4） The hole of matching, cushion cap post（4）On have support housing（19）Step, in housing（19）Inside it is furnished with inner bag（18）, inner bag（18）'s With cushion cap post in the middle part of bottom surface（4）Upper surface contact, in inner bag（18）Inside bottom surface be put into lower bolster（20）Groove, In housing（19）Interior be provided with the heating member connected with control device（16）, housing（19）Place suitable for reading be furnished with upper lid （12）, upper lid（12）It is provided with steam vent（11）With to inner bag（18）The filling pipe of interior moisturizing（7）, in Shang Gai（12）Above and Middle position below has boss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611219584.7A CN106525567B (en) | 2016-12-26 | 2016-12-26 | Rock aging deformation test system under combined action of continuous water environment and variable temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611219584.7A CN106525567B (en) | 2016-12-26 | 2016-12-26 | Rock aging deformation test system under combined action of continuous water environment and variable temperature |
Publications (2)
| Publication Number | Publication Date |
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| CN106525567A true CN106525567A (en) | 2017-03-22 |
| CN106525567B CN106525567B (en) | 2020-04-10 |
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| CN201611219584.7A Active CN106525567B (en) | 2016-12-26 | 2016-12-26 | Rock aging deformation test system under combined action of continuous water environment and variable temperature |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN111426571A (en) * | 2020-01-16 | 2020-07-17 | 大连理工大学 | Rock creep test method and device under multi-environment action |
| US11054351B2 (en) * | 2017-06-23 | 2021-07-06 | Southwest Petroleum University | Strain and acoustic wave testing device and method for high-temperature rock sample |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US11054351B2 (en) * | 2017-06-23 | 2021-07-06 | Southwest Petroleum University | Strain and acoustic wave testing device and method for high-temperature rock sample |
| 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 |
| CN111426571A (en) * | 2020-01-16 | 2020-07-17 | 大连理工大学 | Rock creep test method and device under multi-environment action |
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