CN206593982U - A kind of rock mass swelling stress tester - Google Patents
A kind of rock mass swelling stress tester Download PDFInfo
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- CN206593982U CN206593982U CN201720378268.8U CN201720378268U CN206593982U CN 206593982 U CN206593982 U CN 206593982U CN 201720378268 U CN201720378268 U CN 201720378268U CN 206593982 U CN206593982 U CN 206593982U
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- pressure
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- swelling stress
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Abstract
The utility model is related to a kind of rock mass swelling stress tester, including sample apparatus for placing, swelling stress test device and display system, sample apparatus for placing includes pressure-bearing casing and the end cap connected positioned at pressure-bearing casing top side detachable, sample is placed with sample apparatus for placing, cushion block is provided with below sample, piston is pressed provided with axle above sample, air-pressure chamber is formed between axle pressure piston and end cap, air-pressure chamber is connected by air pressure pressure regulator valve with nitrogen cylinder；Swelling stress test device includes deformation testing device and water filling device, deformation testing device includes the mobile bar for pressing piston to be fixedly connected with axle, and it is arranged on the deformation amesdial on bearing, bearing is fixedly connected with end cap, water filling device includes the ventilating water pipe set inside tank and the mobile bar, and tank is connected by hydraulic pressure pressure regulator valve with nitrogen cylinder；Sample apparatus for placing and swelling stress test device are both placed in the thermostatic chamber of closing.
Description
Technical field
The utility model is related to a kind of swelling stress test device, and in particular to a kind of rock mass swelling stress tester.
Background technology
The instrument of ordinary test measurement Rock And Soil swelling stress is mainly conventional consolidation instrument, cylinder sample in terms of soil mechanics
Size isHigh 20mm, soil body water-swellable applies external load by lever principle and constrains sample vertical deformation
Mode obtains expansive force；In addition, also scholar tests vertical swelling pressure and expansion strain using trixlal compression test instrument,
The instrument can provide lateral water pressure, and sample is from bottom water swelling.
For existing test swelling stress and the technology of strain, conventional high-pressure consolidation apparatus and triaxial test of rock instrument are high
Pressure consolidation apparatus is mainly used in testing swelled ground or disturbs the equilibrium swelling power of expansive rock in experiment, with quick, succinct, efficient
Test features, its determination is can not to simulate the rock mass expansion under certain hydraulic pressure effect, simultaneously because lever principle, the small angle of the arm of force
Degree difference can cause sample discontinuity, and precision has much room for improvement.
Triaxial strength tester is the purpose is to the compression strength for testing Rock And Soil, and its lateral afterburner system is application
Servo holding sample lateral load is constant, and therefore, for the seal of balancing gate pit, triaxial apparatus can not ensure, this point application
It can not be met in swell increment, the water absorption of test expansive rock.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of rock mass swelling stress tester, and the device is using work
Plug air pressure-loading sealed coupling technology, makes test result more accurate.
The technical scheme that the utility model solves above-mentioned technical problem is as follows：A kind of rock mass swelling stress tester, including
Sample apparatus for placing, swelling stress test device and display system, the sample apparatus for placing include pressure-bearing casing and positioned at institute
State and sample is placed with the end cap of pressure-bearing casing top side detachable connection, the sample apparatus for placing, be provided with below the sample
Piston is pressed provided with axle above cushion block, the sample, air-pressure chamber is formed between the axle pressure piston and end cap, the air-pressure chamber passes through
Air pressure pressure regulator valve is connected with nitrogen cylinder；The swelling stress test device includes deformation testing device and water filling device, the shape
Become the mobile bar that test device includes pressing piston to be fixedly connected with axle, and the deformation amesdial being arranged on bearing, the branch
Seat is fixedly connected with end cap, and the water filling device includes the ventilating water pipe set inside tank and the mobile bar, described
Tank is connected by hydraulic pressure pressure regulator valve with nitrogen cylinder；The sample apparatus for placing and swelling stress test device are both placed in
In the thermostatic chamber of closing.
The beneficial effects of the utility model are：This instrument can adjust hydraulic pressure and air pressure, mobile bar is driven thousand points of deformation
Table display data changes, and is changed by the registration of osmotic pressure, vertical pressure, the level change of tank and deformation amesdial
The swelling stress of rock is obtained, can also be ensuring deformation amesdial registration by way of adjusting the pressure of air-pressure chamber manually not
Become, to obtain the equilibrium swelling stress of rock under different seepage water pressures, thermostatic chamber can reduce influence of the temperature to air pressure, the dress
Put and sealed coupling technology is loaded using piston type air, make test result more accurate.
On the basis of above-mentioned technical proposal, the utility model can also do following improvement.
Further, the display system includes internal pressure secondary meter and axle pressure secondary meter, and the internal pressure secondary meter leads to
Cross interior pressure sensor with ventilating water pipe to be connected, the axle pressure secondary meter is connected by axle pressure sensor with air-pressure chamber.
Beneficial effect using above-mentioned further scheme is：Internal pressure is shown by internal pressure secondary meter, passes through axle pressure
Secondary meter shows axle pressure pressure.
Further, the connecting pipe of the air pressure pressure regulator valve and air-pressure chamber be provided with gas injection valve A, the hydraulic pressure pressure regulator valve with
The connecting pipe of tank is provided with gas injection valve B, and the connecting pipe of the tank and ventilating water pipe is provided with liquid-filling valve,
The discharge duct of the air-pressure chamber is provided with pressure-relief valve A.
Beneficial effect using above-mentioned further scheme is：Can be by controlling gas injection valve A, gas injection valve B, liquid-filling valve and unloading
Pressure valve A controls the injection of liquids and gases.
Further, the ventilating water pipe is also connected with vavuum pump, and the connecting tube of the vavuum pump and ventilating water pipe is provided with
Pressure-relief valve B.
Beneficial effect using above-mentioned further scheme is：Before experiment starts, exhaust sample using vavuum pump and place dress
Interior air is put, the experimental situation of a vacuum is built.
Further, permeable formation is provided between the sample apparatus for placing and sample.
Beneficial effect using above-mentioned further scheme is：Beneficial to fully contacting for water and rock sample, facilitate after off-test
The rock sample expanded is taken out from device.
Further, the material of the permeable formation is quartz sand.
Beneficial effect using above-mentioned further scheme is：Quartz sand can both be played curable type effect, be subtracted again with permeable
The situation such as disintegration of rock sample occurs under slow effect of water pressure.
Further, the tank is provided with scale.
Beneficial effect using above-mentioned further scheme is：The suction of rock can be obtained by the change of tank high scale
Water.
Further, the air-pressure chamber is also associated with gas pressurizing vessel.
Beneficial effect using above-mentioned further scheme is：Reduce in experimentation because gas leakage or temperature change cause pressure
Fluctuation.
Brief description of the drawings
Fig. 1 is the utility model structure principle chart.
In accompanying drawing, the list of parts representated by each label is as follows：
1st, pressure-bearing casing, 2, axle pressure piston, 3, air-pressure chamber, 4, end cap, 5, sample, 6, cushion block, 7, permeable formation, 8, base,
9th, mobile bar, 10, deformation amesdial, 11, ventilating water pipe, 121, gas injection valve A, 122, gas injection valve B, 123, liquid-filling valve, 124, unload
Pressure valve A, 125, pressure-relief valve B, 13, tank.
Specific embodiment party is tried
Principle of the present utility model and feature are described below in conjunction with accompanying drawing, example is served only for explaining this practicality
It is new, it is not intended to limit scope of the present utility model.
As shown in figure 1, a kind of rock mass swelling stress tester, including sample apparatus for placing, swelling stress test device and
Display system, sample apparatus for placing includes pressure-bearing casing 1 and the end cap 4 connected positioned at the top side detachable of pressure-bearing casing 1, and sample is put
Put and sample 5 is placed with device, the lower section of sample 5 is provided with cushion block 6, piston 2, axle pressure piston 2 and end cap are pressed in the top of sample 5 provided with axle
Air-pressure chamber 3 is formed between 4, air-pressure chamber 3 is connected by air pressure pressure regulator valve with nitrogen cylinder；Swelling stress test device is surveyed including deformation
Trial assembly is put and water filling device, and deformation testing device includes the mobile bar 9 for pressing piston 2 to be fixedly connected with axle, and is arranged on bearing 8
On deformation amesdial 10, bearing 8 is fixedly connected with end cap 4, and water filling device is included inside tank 13 and the mobile bar 9
The ventilating water pipe 11 of setting, tank 13 is connected by hydraulic pressure pressure regulator valve with nitrogen cylinder；Sample apparatus for placing and swelling stress
Test device is both placed in the thermostatic chamber of closing.
This instrument can adjust hydraulic pressure and air pressure, make mobile bar 9 drive the display data of deformation amesdial 10 to change, by oozing
The registration of pressure, vertical pressure, the level change of tank 13 and deformation amesdial 10 changes the swelling stress for obtaining rock thoroughly,
It can also ensure that deformation represents that number is constant for thousand point 10 by adjusting the pressure of air-pressure chamber 3 manually, to obtain different seepage water pressures
The equilibrium swelling stress of the lower rock of effect, thermostatic chamber can reduce influence of the temperature to air pressure, and the device is added using piston type air
Sealed coupling technology is carried, makes test result more accurate.
In the utility model, display system includes internal pressure secondary meter and axle pressure secondary meter, and internal pressure secondary meter leads to
Cross interior pressure sensor with ventilating water pipe 11 to be connected, axle pressure secondary meter is connected by axle pressure sensor with air-pressure chamber 3；Pass through internal pressure
Secondary meter shows internal pressure, presses secondary meter to show axle pressure pressure by axle.
In the utility model, the connecting pipe of air pressure pressure regulator valve and air-pressure chamber is provided with gas injection valve A121, the hydraulic pressure
The connecting pipe of pressure regulator valve and tank is provided with gas injection valve B122, the connecting pipe of the tank and ventilating water pipe
Provided with liquid-filling valve 123, the discharge duct of the air-pressure chamber is provided with pressure-relief valve A124；Can be by controlling gas injection valve A121, note
Air valve B122, liquid-filling valve 123 and pressure-relief valve A124 control the injection of liquids and gases.
In the utility model, ventilating water pipe 11 is also connected with vavuum pump, the connection of the vavuum pump and ventilating water pipe 11
Pipe is provided with pressure-relief valve B125；Before experiment starts, the air in sample apparatus for placing is exhausted using vavuum pump, one is built very
Empty experimental situation.
In the utility model, permeable formation 7 is provided between sample apparatus for placing and sample 5；Beneficial to the abundant of water and rock sample
Contact, facilitates after off-test and to take out the rock sample expanded from device.
In the utility model, the material of permeable formation 7 is quartz sand；Quartz sand both can play curable type again with permeable
Effect, slows down the situation such as disintegration of rock sample under effect of water pressure and occurs.
In the utility model, tank 13 is provided with scale；It can be obtained by the change of the high scale of tank 13
The water absorption of rock.
In the utility model, air-pressure chamber 3 is also associated with gas pressurizing vessel；Reduce in experimentation because of gas leakage or temperature
Pressure oscillation caused by change.
Another embodiment of the present utility model is：Sample apparatus for placing can also improve pressure-bearing casing 1, permeable by installing additional
Split film uses rigid seepy material, and lock ring cylindrical type sample 5 is limited again while ensureing water with rock contact to reach
The purpose of lateral expansion；Inside pressure-bearing casing 1, cylinder sample 5 disposes loop sensor sideways, the side for test sample
To stress；Water in tank 13 can be changed to anti-corrosion transparency liquid, and expansive rock is tried with the solution containing different ions
Test.
Embodiment of the present utility model is：
1. sample preparation：Diameter 50mm, high 100mm standard cylinder sample 5, the upper and lower surface of cylinder sample 5 are prepared on lathe
It is smooth and parallel.
2. place sample：The end cap 4 of sample apparatus for placing is opened, by standard specimen 5 through being put into sample apparatus for placing, is kept away
Exempt from mechanical force and cause specimen fails.
3. quartz sand is filled：Sample 5 is put into after sample apparatus for placing, then is slowly added to appropriate stone to around sample 5
Sand, it is ensured that quartz sand is sufficient filling with, in the interstitial space in device, being covered with around sample 5, and is flushed with the height of sample 5.
4. experiment prepares：End cap 4 is closely connected with axle pressure casing 2, with the sky in vacuum pumped sample apparatus for placing
Gas, to ensure the close contact of axle pressure piston 2 and sample 5, prepares experiment.
5. confined pressure is loaded：Air pressure pressure regulator valve is opened, applies certain pressure P0 into air-pressure chamber 3, treats air pressure pressure regulator valve registration
After stable, the reading S0 of amesdial is recorded, gas injection valve A121 and gas injection valve B122 is opened, into air-pressure chamber 3 and tank 13
Nitrogen is injected, certain seepage water pressure P1 is set, seepage water pressure records initial time, and water enters rapidly under pressure P1 effects
Enter in sample apparatus for placing, the liquid level rapid decrease in tank 13, after the liquid level in tank 13 is basicly stable, note
Record initial level scale.
6. measure swelling stress and balance swelling stress：Water, which enters in sample 5, expands sample 5, now deformation amesdial
10 registrations change, and osmotic pressure now can be drawn from hydraulic pressure pressure regulator valve, and now perpendicular can be drawn from air pressure pressure regulator valve
To pressure, changed by the registration of osmotic pressure, vertical pressure, the liquid level difference of tank 13 and deformation amesdial 10 and obtain rock
The swelling stress of stone, changes air pressure pressure regulator valve and hydraulic pressure pressure regulator valve, the registration of deformation amesdial 10 is kept constant, according to air pressure
The change of pressure regulator valve and hydraulic pressure pressure regulator valve registration draws equilibrium swelling stress.
Preferred embodiment of the present utility model is the foregoing is only, it is all in this practicality not to limit the utility model
Within new spirit and principle, any modification, equivalent substitution and improvements made etc. should be included in guarantor of the present utility model
Within the scope of shield.
Claims (8)
1. a kind of rock mass swelling stress tester, it is characterised in that including sample apparatus for placing, swelling stress test device and aobvious
Show system, the sample apparatus for placing includes pressure-bearing casing (1) and the end connected positioned at pressure-bearing casing (1) top side detachable
Cover (4), be placed with the sample apparatus for placing below sample (5), the sample (5) and be provided with cushion block (6), the sample (5)
Top forms air-pressure chamber (3) provided with axle pressure piston (2) between the axle pressure piston (2) and end cap (4), the air-pressure chamber (3) is led to
Air pressure pressure regulator valve is crossed with nitrogen cylinder to be connected；The swelling stress test device includes deformation testing device and water filling device, described
Deformation testing device includes the mobile bar (9) for pressing piston (2) to be fixedly connected with axle, and the deformation thousand being arranged on bearing (8)
Divide table (10), the bearing (8) is fixedly connected with end cap (4), the water filling device includes tank (13) and the movement
The ventilating water pipe (11) set inside bar (9), the tank (13) is connected by hydraulic pressure pressure regulator valve with nitrogen cylinder；The examination
Sample apparatus for placing and swelling stress test device are both placed in the thermostatic chamber of closing.
2. rock mass swelling stress tester according to claim 1, it is characterised in that the display system includes internal pressure two
Secondary instrument and axle pressure secondary meter, the internal pressure secondary meter are connected by interior pressure sensor with ventilating water pipe (11), the axle
Pressure secondary meter is connected by axle pressure sensor with air-pressure chamber (3).
3. rock mass swelling stress tester according to claim 1, it is characterised in that the air pressure pressure regulator valve and air-pressure chamber
(3) connecting pipe is provided with gas injection valve A (121), and the connecting pipe of the hydraulic pressure pressure regulator valve and tank (13) is provided with
Gas injection valve B (122), the tank (13) and the connecting pipe of ventilating water pipe (11) are provided with liquid-filling valve (123), the gas
The discharge duct of pressure chamber (3) is provided with pressure-relief valve A (124).
4. rock mass swelling stress tester according to claim 1, it is characterised in that the ventilating water pipe (11) is also connected with
There is vavuum pump, the connecting tube of the vavuum pump and ventilating water pipe (11) is provided with pressure-relief valve B (125).
5. rock mass swelling stress tester according to claim 1, it is characterised in that the sample apparatus for placing and sample
(5) permeable formation (7) is provided between.
6. rock mass swelling stress tester according to claim 5, it is characterised in that the material of the permeable formation (7) is
Quartz sand.
7. rock mass swelling stress tester according to claim 1, it is characterised in that the tank (13) is provided with
Scale.
8. rock mass swelling stress tester according to claim 1, it is characterised in that the air-pressure chamber (3) is also associated with
Gas pressurizing vessel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720378268.8U CN206593982U (en) | 2017-04-12 | 2017-04-12 | A kind of rock mass swelling stress tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720378268.8U CN206593982U (en) | 2017-04-12 | 2017-04-12 | A kind of rock mass swelling stress tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206593982U true CN206593982U (en) | 2017-10-27 |
Family
ID=60121034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720378268.8U Expired - Fee Related CN206593982U (en) | 2017-04-12 | 2017-04-12 | A kind of rock mass swelling stress tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206593982U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109030340A (en) * | 2018-07-16 | 2018-12-18 | 三峡大学 | A kind of self-expanding Load-unload device and method |
| CN109406758A (en) * | 2018-12-12 | 2019-03-01 | 桂林理工大学 | Swelled ground three-dimensional expansion rate of water absorption and expansion force tester |
| CN110018296A (en) * | 2019-05-29 | 2019-07-16 | 河南理工大学 | Free wxpansion volume test device and test method in a kind of expansive rock hydration process |
| JP2020030100A (en) * | 2018-08-22 | 2020-02-27 | 明光産業株式会社 | Pressure-resistant expansion test device of high pressure vessel, and removal method of residual air |
| CN112014224A (en) * | 2020-07-31 | 2020-12-01 | 中国科学院武汉岩土力学研究所 | Method for testing three-dimensional thermal expansion stress of rock and soil material under three-dimensional stress condition |
| CN115389286A (en) * | 2022-08-23 | 2022-11-25 | 东北大学 | Deep rock mass closed stress construction method for physical model test |
| CN115420464A (en) * | 2022-11-07 | 2022-12-02 | 西南交通大学 | Underground engineering fluid pressure simulation system, method and related equipment |
-
2017
- 2017-04-12 CN CN201720378268.8U patent/CN206593982U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109030340A (en) * | 2018-07-16 | 2018-12-18 | 三峡大学 | A kind of self-expanding Load-unload device and method |
| CN109030340B (en) * | 2018-07-16 | 2021-02-19 | 三峡大学 | Self-expansion loading and unloading device and method |
| JP2020030100A (en) * | 2018-08-22 | 2020-02-27 | 明光産業株式会社 | Pressure-resistant expansion test device of high pressure vessel, and removal method of residual air |
| JP7367949B2 (en) | 2018-08-22 | 2023-10-24 | 明光産業株式会社 | Pressure expansion test equipment for high pressure containers and residual air removal method |
| CN109406758A (en) * | 2018-12-12 | 2019-03-01 | 桂林理工大学 | Swelled ground three-dimensional expansion rate of water absorption and expansion force tester |
| CN109406758B (en) * | 2018-12-12 | 2021-08-10 | 桂林理工大学 | Tester for three-dimensional water absorption expansion rate and expansion force of expansive soil |
| CN110018296A (en) * | 2019-05-29 | 2019-07-16 | 河南理工大学 | Free wxpansion volume test device and test method in a kind of expansive rock hydration process |
| CN110018296B (en) * | 2019-05-29 | 2024-04-26 | 河南理工大学 | Free expansion volume testing device and testing method in expansion rock hydration process |
| CN112014224A (en) * | 2020-07-31 | 2020-12-01 | 中国科学院武汉岩土力学研究所 | Method for testing three-dimensional thermal expansion stress of rock and soil material under three-dimensional stress condition |
| CN115389286A (en) * | 2022-08-23 | 2022-11-25 | 东北大学 | Deep rock mass closed stress construction method for physical model test |
| CN115420464A (en) * | 2022-11-07 | 2022-12-02 | 西南交通大学 | Underground engineering fluid pressure simulation system, method and related equipment |
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171027 Termination date: 20210412 |