CN109975514A - A kind of fully transparent experimental rig that the lower mud film forming of high pressure effect is held one's breath - Google Patents
A kind of fully transparent experimental rig that the lower mud film forming of high pressure effect is held one's breath Download PDFInfo
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- CN109975514A CN109975514A CN201910259320.1A CN201910259320A CN109975514A CN 109975514 A CN109975514 A CN 109975514A CN 201910259320 A CN201910259320 A CN 201910259320A CN 109975514 A CN109975514 A CN 109975514A
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- film forming
- diameter
- fully transparent
- mud film
- end cover
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
Abstract
The present invention relates to a kind of high pressures to act on the fully transparent experimental rig that lower mud film forming is held one's breath, belong to rock-soil mechanics test apparatus manufacturing technology field, it is made of fully transparent pressure chamber, measurement and pressurizing device, wherein, fully transparent pressure chamber is by upper and lower end caps and transparent cylinder common combination, and measurement and pressurizing device are by graduated cylinder and air compressor machine common combination.Chief value of the present invention is: one, in order to realize, (< 5MPa) is observed mud film forming under high pressure, and fully transparent pressure chamber can be used, carry out Air-tight Test；Two, the dynamic overall process observation of mud film forming can be achieved.
Description
Technical field:
The present invention relates to a kind of high pressures to act on the fully transparent experimental rig that lower mud film forming is held one's breath, and belongs to rock-soil mechanics test
Instrument manufacturing technical field.Suitable for carrying out under condition of high voltage (< 5MPa), test mud film forming is held one's breath the test of performance.
Background technique:
Mud film forming supporting is a kind of important method of Underground Engineering Excavation supporting, is mainly used for maintaining the stabilization of excavation face
Property, ensure going on smoothly for construction.Homemade fully transparent Air-tight Test device is mostly used to the laboratory test of mud film forming at present,
But its work gas pressure overwhelming majority is within 1MPa, and is greater than under the conditions of 1MPa and puts forward higher requirements to pressure chamber, existing
Device is difficult to observe mud film forming overall process in real time under the conditions of high pressure (> 1MPa).For this problem, of the present invention one
Kind high pressure acts on lower mud and forms a film the fully transparent experimental rig held one's breath, it can be achieved that under high pressure (< 5MPa), observing mud in real time
The dynamic overall process of slurry film forming Air-tight Test.
Summary of the invention:
A kind of high pressure that the present invention designs acts on the fully transparent experimental rig that lower mud film forming is held one's breath, by fully transparent pressure
Room, measurement and pressurizing device composition.Wherein, fully transparent pressure chamber is made of circular upper end cover, lower cover and transparent cylinder, is surveyed
Amount and pressurizing device are made of graduated cylinder and air compressor.
The fully transparent pressure chamber I,
A. upper end cover
Upper end cover outer diameter is 500mm, with a thickness of 30mm, be equipped with air intake valve, air inlet, rubber ring groove, bolt hole and
Positioning ring；Air intake valve is connected to air inlet, and air inlet is located at upper end cover side middle position, and diameter 10mm is communicated to
End cap lower surface center, air intake valve can control admission pressure, realize classification pressurization, when valve closing, then pressure can be achieved
Constant pressure environment in power room can test holding one's breath property of constant pressure and the pressure-bearing time of mud film forming；Rubber ring groove is laid under upper end cover
Surface, totally three groups, internal diameter is followed successively by 170mm, 220mm, 270mm, recess width 5mm, depth 5mm, rubber ring groove association
Same rubber ring, and seal grease is smeared, it can be achieved that the leakproofness of pressure chamber under high pressure in gap；Bolt hole is laid in
Upper end cover diameter is every 90 ° one, aperture 15mm on the circumference of 400mm, and screw rod, can will be upper and lower by bolt hole and tightening
End cap and transparent cylinder are fixed into an entirety；Positioning ring internal diameter is 321mm, outer diameter 330mm, is highly 5mm, positioning ring
Setting helps to be found accurately and limited when disposing transparent cylinder.
B. lower cover
Lower cover outer diameter is 500mm, with a thickness of 30mm, be equipped with water discharging valve, discharge outlet, rubber ring groove, bolt hole and
Positioning ring, water discharging valve are connected to discharge outlet, and discharge outlet is located at lower cover side middle position, discharge outlet diameter 10mm, connection
To lower end cap upper surface center, the water outflow discharge outlet that water discharging valve can control pressure chamber to filter out, the external measurement of discharge outlet
Device provides channel for draining；Rubber ring groove is laid in lower end cap upper surface, totally three groups, internal diameter be followed successively by 170mm,
220mm, 270mm, recess width 5mm, depth 5mm, rubber ring groove cooperates with rubber ring, and smears Seal Oil in gap
Rouge is, it can be achieved that the leakproofness of pressure chamber under high pressure；Bolt hole is laid on the circumference that lower cover diameter is 400mm, often
90 ° one, aperture 15mm, screw rod by bolt hole and tightening, upper and lower end caps and transparent cylinder can be fixed into one it is whole
Body；Positioning ring internal diameter is 321mm, outer diameter 330mm, is highly 5mm, the setting of positioning ring facilitates when disposing transparent cylinder
It is found accurately and is limited.
D. transparent cylinder
Transparent cylinder is made of high-strength transparent material, internal diameter 160mm, outer diameter 320mm, a height of 200mm, and when test can
It holds one's breath through barrel progress whole process and observes and record in time.
Compared with the present invention and existing mud film forming obturating system, have the following advantages: one, pressure chamber can bear 5MPa with
Interior atmospheric pressure effect；Two, during testing, it can pass through fully transparent pressure chamber and observe mud film forming dynamic overall process in real time.
Detailed description of the invention
Fig. 1 is two dimension view of the invention.
Appended drawing reference are as follows:
The fully transparent pressure chamber I: A. upper end cover, B. lower cover, D. transparent cylinder.
Wherein, A1. air intake valve, A2. air inlet, A3. rubber ring groove, A4. positioning ring, B1. water discharging valve, B2. row
The mouth of a river, B3. rubber ring groove, B4. positioning ring, C. screw rod, G. rubber ring, D1. mud materials, D2. earth formation material, D3. filtering layer
Material.
II, measurement and pressurizing device: E. air compressor (or other pressurizing devices), F. graduated cylinder (or beaker).
Specific embodiment:
Operating process of the invention is described further below in conjunction with attached drawing:
One, four pressure chamber's C. screw rods are unscrewed, A. upper end cover is opened；
Two, D3. filtering layer material is first slowly poured into D. transparent cylinder, uniform compaction leveling with a thickness of 5cm, then is delayed
Slowly pour into D2. earth formation material, uniform compaction leveling, with a thickness of 5cm；
Three, it is reversely filled the water to B2. discharge outlet, so that D3. filtering layer material and D2. earth formation material is reached saturation, and after saturation
Earth formation material surface is flushed with liquid level in graduated cylinder；
Four, D1. mud materials are poured into, uniformly in D2. earth formation material slowly with a thickness of 3cm；
Five, the A4. positioning ring of A. upper end cover is directed at D. transparent cylinder, A. upper end cover is slowly placed in the transparent circle of D.
It on cylinder, is caught in A4. positioning ring, is aligned upper and lower end caps bolt hole by rotating A. upper end cover, tightens four C. screw rods；
Six, it checks E. air compressor, is at zero load, connect A1. air intake valve and E. air compressor, open
A1. air intake valve connects F. graduated cylinder and B2. discharge outlet；
Seven, start E. air compressor, Air-tight Test starts, and operation E. air compressor is pressurizeed (such as step by step
0.1MPa), the different grades of constant pressure Air-tight Test in pressure chamber is realized by closing A1. air intake valve；
Eight, during testing, the incrementss of water, that is, mud drainage amount in F. graduated cylinder, liquid level steeply rises suddenly in F. graduated cylinder
Or thering are a large amount of bubbles to indicate that mud film loses the ability of holding one's breath substantially when emerging, whole process can be read and record drainage magnitude and atmospheric pressure
Value；
Nine, it after the ventilative destruction of mud film, closes E. air compressor and disconnects the connection of E. air compressor and pressure chamber, beat
A upper end cover A1. air intake valve pressure release is opened, pressure chamber C. screw rod is unscrewed, slowly opens A. upper end cover, check that D1. mud materials exist
D2. the lower infiltration situation in earth formation material and D3. filtering layer material；
Nine, remaining D1. mud materials, D2. earth formation material and D3. filtering layer material are cleared up, the transparent graduated cylinder of D. is carefully removed,
It cleans and dries；
Ten, three groups of G. rubber rings for installing B. lower cover smear seal grease in B3. rubber ring groove, are directed at B.
The B4. positioning ring of lower cover, slowly places D. transparent cylinder, then installs three groups of G. rubber rings of A. upper end cover, in its A3.
Rubber ring groove smears seal grease, the A4. positioning ring of A. upper end cover is directed at D. transparent cylinder, slowly by A. upper end cover
It is placed on D. transparent cylinder, is caught in A4. positioning ring, be aligned upper and lower end caps bolt hole by rotating A. upper end cover, screw on
C. screw rod is used to test next time；
11, off-test.
Claims (2)
1. a kind of high pressure acts on the fully transparent experimental rig that lower mud film forming is held one's breath, filled by fully transparent pressure chamber, measurement and pressurization
Composition is set, the dynamic overall process of mud film forming Air-tight Test can be observed in real time under high pressure (< 5MPa).
2. a kind of high pressure according to claim 1 acts on the fully transparent experimental rig that lower mud film forming is held one's breath, feature
Be: the fully transparent pressure chamber is made of circular upper end cover, lower cover and transparent cylinder；The upper end cover outer diameter is
500mm is equipped with air intake valve, air inlet, rubber ring groove, bolt hole and positioning ring with a thickness of 30mm；Air intake valve and air inlet
Mouth connection, air inlet are located at upper end cover side middle position, and diameter 10mm is communicated to upper end cover lower surface center；Rubber
Cushion rubber groove is laid in upper end cover lower surface, and totally three groups, internal diameter is followed successively by 170mm, 220mm, 270mm, recess width 5mm,
Depth is 5mm；Bolt hole is laid on the circumference that upper end cover diameter is 400mm, and every 90 ° one, aperture 15mm；In positioning ring
Diameter is 321mm, outer diameter 330mm, is highly 5mm；The lower cover outer diameter is 500mm, with a thickness of 30mm, is equipped with drain valve
Door, discharge outlet, rubber ring groove, bolt hole and positioning ring, water discharging valve are connected to discharge outlet, and discharge outlet is located at lower cover side
Middle position, discharge outlet diameter 10mm are communicated to lower cover centre of surface position；Rubber ring groove is laid in table on lower cover
Face, totally three groups, internal diameter is followed successively by 170mm, 220mm, 270mm, recess width 5mm, depth 5mm；Bolt hole is laid in down
End cap diameter is every 90 ° one on the circumference of 400mm, aperture 15mm；Positioning ring internal diameter is 321mm, outer diameter 330mm, height
Degree is 5mm；The transparent cylinder is made of high-strength transparent material, internal diameter 160mm, outer diameter 320mm, a height of 200mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910259320.1A CN109975514A (en) | 2019-04-02 | 2019-04-02 | A kind of fully transparent experimental rig that the lower mud film forming of high pressure effect is held one's breath |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910259320.1A CN109975514A (en) | 2019-04-02 | 2019-04-02 | A kind of fully transparent experimental rig that the lower mud film forming of high pressure effect is held one's breath |
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| Publication Number | Publication Date |
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| CN109975514A true CN109975514A (en) | 2019-07-05 |
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| CN201910259320.1A Pending CN109975514A (en) | 2019-04-02 | 2019-04-02 | A kind of fully transparent experimental rig that the lower mud film forming of high pressure effect is held one's breath |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103940976A (en) * | 2014-03-24 | 2014-07-23 | 中国地震局地壳应力研究所 | Pressure container with high impermeability used for rock tests of pressing crack, seepage and slight shock |
| CN105866337A (en) * | 2016-04-21 | 2016-08-17 | 河海大学 | Device and method for testing slurry shield excavation surface mud film formation and mud film air tightness under high pressure |
| CN105891084A (en) * | 2016-04-06 | 2016-08-24 | 河海大学 | Detachable mud film formation and mud film airtightness testing device and method |
| CN108918390A (en) * | 2018-08-10 | 2018-11-30 | 河海大学 | The device and method of mud film forming and measurement mud film amounts of consolidation, air inflow |
| CN109253927A (en) * | 2018-08-18 | 2019-01-22 | 中山大学 | A kind of permeable circulating pressure room of the all-pass of rock test |
-
2019
- 2019-04-02 CN CN201910259320.1A patent/CN109975514A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103940976A (en) * | 2014-03-24 | 2014-07-23 | 中国地震局地壳应力研究所 | Pressure container with high impermeability used for rock tests of pressing crack, seepage and slight shock |
| CN105891084A (en) * | 2016-04-06 | 2016-08-24 | 河海大学 | Detachable mud film formation and mud film airtightness testing device and method |
| CN105866337A (en) * | 2016-04-21 | 2016-08-17 | 河海大学 | Device and method for testing slurry shield excavation surface mud film formation and mud film air tightness under high pressure |
| CN108918390A (en) * | 2018-08-10 | 2018-11-30 | 河海大学 | The device and method of mud film forming and measurement mud film amounts of consolidation, air inflow |
| CN109253927A (en) * | 2018-08-18 | 2019-01-22 | 中山大学 | A kind of permeable circulating pressure room of the all-pass of rock test |
Non-Patent Citations (2)
| Title |
|---|
| 国家质量监督检验检疫总局 编著: "《特种设备安全监察》", 30 November 2014, 北京：中国质检出版社 * |
| 王学生: "《压力容器》", 30 June 2018, 上海：华东理工大学出版社 * |
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