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 PDF

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Publication number
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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CN
China
Prior art keywords
film forming
diameter
fully transparent
mud film
end cover
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Pending
Application number
CN201910259320.1A
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Chinese (zh)
Inventor
周翠英
梁彦豪
刘春辉
刘镇
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Sun Yat Sen University
National Sun Yat Sen University
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National Sun Yat Sen University
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Priority to CN201910259320.1A priority Critical patent/CN109975514A/en
Publication of CN109975514A publication Critical patent/CN109975514A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/24Earth 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

A kind of fully transparent experimental rig that the lower mud film forming of high pressure effect is held one's breath
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.
CN201910259320.1A 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 Pending CN109975514A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
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

Patent Citations (5)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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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