CN208547560U - The device of mud film forming and measurement mud film amounts of consolidation, air inflow - Google Patents
The device of mud film forming and measurement mud film amounts of consolidation, air inflow Download PDFInfo
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- CN208547560U CN208547560U CN201821288805.0U CN201821288805U CN208547560U CN 208547560 U CN208547560 U CN 208547560U CN 201821288805 U CN201821288805 U CN 201821288805U CN 208547560 U CN208547560 U CN 208547560U
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- mud film
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Abstract
The utility model relates to the devices of a kind of mud film forming and measurement mud film amounts of consolidation, air inflow, it include: a cylindrical pressure room, the top of cylindrical pressure room is equipped with top cover that is openable or closing cylindrical pressure room, top cover is equipped with the air inlet being connected with air pressure feeding mechanism, and the bottom of cylindrical pressure room is equipped with drainage hole；Drainage measuring device is connected by drainage pipeline with the drainage hole；The top that the indoor cylinder bottom of cylindrical pressure is located at drainage hole is equipped with the filter medium for simulated formation.The utility model for simulating the process of slurry penetration film forming in slurry shield excavation face indoors, and the consolidation and air inlet phenomenon that generate during holding one's breath to mud film carry out quantitative measurment respectively, evaluate to mud film quality.
Description
Technical field
The utility model relates to underground engineering field, form a film and measure more particularly to a kind of mud mud film amounts of consolidation, into
The device and its test method of tolerance.
Background technique
With the development of China's economy and scientific and technological level, subway tunnel, seepage tunnel and the large-scale construction for getting over the tunnel Jiang Hai
Thriving, the problems such as shield machine is commonly encountered cutterhead molding, tool wear in the tunneling process of underground, needs to shut down and open the cabin
The characteristics of operation such as maintenance, maintenance of frequently opening the cabin is China's shield tunnel construction.It is with pressure open the cabin technique due to it is applied widely, at
Open the cabin method of the characteristics of this is low, short time limit as mainstream.Technique with pressure of opening the cabin is permeated in excavation face using mud forms mud
Film maintains air pressure and the soil water pressure at excavation face both ends.The relationship between quality of mud film applied into the life security of cabin personnel with shield
Work is gone on smoothly, and the air-tightness of mud infiltration in the earth formation and mud film is simulated by laboratory test, with construction site into
Row assessment guidance, it is great to engineering significance.
With increasingly becoming larger for edpth of tunnel, the pressure of mud film two sides accordingly becomes larger, and mud film generates apparent consolidation draining
Phenomenon, and then influence the air inlet of mud film；Mud film is as porous media simultaneously, and air inlet does not occur then can effectively hold one's breath for a long time, mud
The inlet air conditions and charge volume of film have important references meaning to engineering.
Utility model content
Purpose of utility model: to supply the deficiencies in the prior art, the utility model proposes mud film forming and measurement mud film are solid
Knot amount, the device of air inflow and its test method, not only analog mud permeates the process of film forming to the device in the earth formation, but also
The air-tightness of mud film can be tested, it is most important that survey with air inflow to the consolidation draining amount that mud film occurs during holding one's breath
Examination.
In order to achieve the above technical purposes, the technical solution adopted in the utility model is:
A kind of device of mud film forming and measurement mud film amounts of consolidation, air inflow, comprising:
One cylindrical pressure room, the top of cylindrical pressure room are equipped with top cover that is openable or closing cylindrical pressure room, on top cover
Equipped with the air inlet being connected with air pressure feeding mechanism, the bottom of cylindrical pressure room is equipped with drainage hole；
Drainage measuring device is connected by drainage pipeline with the drainage hole, and drainage pipeline is equipped with water discharging valve；
The top that the indoor cylinder bottom of cylindrical pressure is located at drainage hole is equipped with the filter medium for simulated formation, the mistake
Filter medium includes:
Steel wire and the several layers geotextile layer being layed on steel wire；
The barrel of cylindrical pressure room bottom side is equipped with the side opening of exhaust；
One tubular hermetically sealable film, the smooth closing in one end of the tubular hermetically sealable film, another end opening, the tubular are impermeable
The smooth one end of air film is bonded with mud film, and additional air and cylindrical pressure room is discharged by the side opening of cylindrical pressure room bottom in membranous wall
Inner wall fitting；
Part of the hermetically sealable film beyond test cylinder is counter to bind round on cylindrical pressure ceiling end, and is divided anti-hoop portion by top cover
Pinch seal.
The cylindrical pressure room includes:
Test cylinder: for the organic glass tubular structure of upper and lower opening, test cylinder top and bottom end respectively with flange
It is tightly connected；
One top cover is arranged on the flange of test cylinder top, and the two sides of top cover pass through screw rod fastener and test cylinder
The flange of upper/lower terminal is fixedly connected, and the contact surface of the flange of top cover and test cylinder top is equipped with sealing ring；
One pedestal, is connected to the flange base of the test cylinder lower end, and pedestal connects with the flange of test cylinder bottom end
Contacting surface is equipped with the concaveconvex structure of sealing, and chassis interior is equipped with the drainage hole, and drainage hole passes through pipeline and drainage measurement
Device connection.
Base upper surface is equipped with groove, and bottom portion of groove is connected to drainage hole, is followed successively by steel wire on groove from below to up
And geotextiles.
The air pressure feeding mechanism is air compressor, and air compressor passes through admission line and cylindrical pressure ceiling portion
Air inlet is connected, and admission line is equipped with pressure regulator valve and air intake valve.
The drainage measuring device includes electronic balance and the steel ladle that is set on electronic balance, described to be filled with water
Bucket is equipped with the hole being connected with drainpipe described in the bottom of cylindrical pressure room.
The utility model has the beneficial effects that mud film formation device provided by the utility model can simple and easy simulation stratum
The process of middle slurry penetration film forming, and capable of testing consolidation of mud film during holding one's breath, air inlet holds one's breath process to mud film
The research deeply carefully seen effectively assesses mud film quality of holding one's breath with this, and correlative measurement provided by the utility model
Method for testing is simple and easy, scientific and effective.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of device in the utility model；
Wherein, 1, air compressor；2, pressure regulator valve；3, air inlet pipe；4, intake valve；5, top cover；6, flange A；7, test cylinder
Body；8, side opening；9, flange B；10, pedestal；11, drain valve；12, hermetically sealable film；13, electronic balance；14, computer；15, geotechnological
Cloth；16, steel wire；
Fig. 2 is test cylinder sectional view when carrying out consolidation test；
Fig. 3 is base vertical view；
Fig. 4 is the test principle figure of the utility model.
Specific embodiment
Combined with specific embodiments below, the utility model is furtherd elucidate, it should be understood that these embodiments are merely to illustrate this
Utility model rather than limitation the scope of the utility model, after having read the utility model, those skilled in the art couple
The modification of the various equivalent forms of the utility model falls within the application range as defined in the appended claims.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, all terms used herein (including technology art
Language and scientific term) there is meaning identical with the general understanding of those of ordinary skill in the utility model fields.Also
It should be understood that those terms such as defined in the general dictionary should be understood that have in the context of the prior art
The consistent meaning of meaning will not be explained in an idealized or overly formal meaning and unless defined as here.
The meaning of "and/or" described in the utility model refers to the case where respective individualism or both exists simultaneously
In being included in.
The meaning of " inside and outside " described in the utility model is referred to relative to equipment itself, inside sensing equipment
Direction be it is interior, otherwise is outer.
When the meaning of " left and right " described in the utility model refers to reader's face attached drawing, the left side of reader is
For a left side, the right of reader is the right side.
The meaning of " connection " described in the utility model can be to be directly connected to be also possible between component between component
Pass through being indirectly connected with for other components.
The device of mud film forming and measurement mud film amounts of consolidation, air inflow as shown in Figure 1, including pressure feeding mechanism, examination
Test cylinder, drainage measuring device.The flange connecting with top cover is flange A, and the flange connecting with pedestal is flange B, the test
Cylinder is nested between flange A, flange B and is fixed by screw pre-tightening, there is sealing between flange and the barrel for having test cylinder
Rubber pad.Described flange A, B and top cover are passed through and are connected by 4 screw rods, and there are rubber pad in flange A and top cover contact position；Institute
It states flange B and pedestal and is passed through and connected by another group of 4 screw rods, have rubber pad at flange B and base contacts.
Intake valve on the top cover is bolted with air inlet pipe by rotation, and the PU that the air inlet pipe is internal diameter 4mm is managed.
Pressure feeding mechanism is sequentially connected and is constituted by air compressor 1, pressure regulator valve 2, air inlet pipe 3；It is organic for testing cylinder
Glass tubular construction, 7 internal diameter 12cm of lucite cylinder, high 14cm, wall thickness 1cm are nested between flange A6 and flange B9, and lead to
Screw pre-tightening is crossed to fix.
Lucite cylinder side wall sets side opening 8, for discharging the mud on mud film and the discharge when being bonded hermetically sealable film 12
Air between film and organic glass barrel.
Top cover 5 is connect by bolt with the flange A6 of cylinder side, and intake valve 4 is set on top cover 5, logical with pressure feeding mechanism
The connection of air inlet pipe 3 is crossed, tubular hermetically sealable film 12 identical with cylinder inboard wall diameter is fitted in test cylinder 7 by openable top cover 5
It is interior, hermetically sealable film 12 be tubular hermetically sealable film, diameter 12cm, the smooth closing in one end of tubular hermetically sealable film, another end opening, no
Part of the open end of ventilated membrane beyond test shell flange A6 is counter to bind round on flange, if the purpose of hermetically sealable film 12 is by pressure
The air pressure that feeding mechanism provides is converted into face pressure, makes mud film discharging consolidation.
Pedestal is connect by bolt with the flange B9 of the cylinder other side, and pedestal 10 is equipped with groove, and groove depth 3mm, there are 4
Groove, square crossing distribution, bottom portion of groove are connected to drainage hole, are followed successively by two layers of steel wire, soil on groove from below to up
Work cloth, steel wire screen distance 1mm, the effect of groove and steel wire are reserved water passages, while branch of the steel wire as geotextiles
Timbering material, filter medium of the geotextiles as slurry penetration are used for simulated formation；There are apertures for bottom portion of groove, are chassis interior
The entrance of drainage channel, drainage channel are connected with the drain valve 11 of base side.Drainage measuring device includes that precision is 0.01g
Electronic balance 12, the computer 13 for being mounted with the logging software to match with balance.
As the preferred embodiment of the utility model experimental rig, the base groove depth 3mm, there are 4 grooves, vertical to hand over
Fork distribution, it is the entrance of chassis interior drainage channel, aperture and channel diameter 4mm that there are apertures for bottom portion of groove.
As the preferred embodiment of the utility model experimental rig, the steel wire screen distance 1mm.
As the preferred embodiment of the utility model experimental rig, the hermetically sealable film be tubular hermetically sealable film, diameter 12cm,
The smooth closing in one end of tubular hermetically sealable film, another end opening.
As the preferred embodiment of the utility model experimental rig, the pressure feeding mechanism includes air compressor and sky
The connected pressure control unit of air compressor, the air inlet pipe are connected with pressure control unit.
Thickness, the moisture content of a kind of device forming a film and measure mud film amounts of consolidation, air inflow using the mud to mud film
The method being measured, includes the following steps:
A) it is laid with geotextiles on steel wire, replaces stratum using equivalent geotextiles, is determined by stratum effective aperture
The geotextiles mesh number of selection；
B) bottom drain holes of cylindrical pressure room are connected into water injection equipment, the bottom analog stratum into cylindrical pressure room
Reversely water filling is saturated in filter medium, after saturation, is removed water injection equipment, is closed water discharging valve, opens cylindrical pressure ceiling later
The top cover in portion, the injection testing mud into cylindrical pressure room will test the top of cylinder by top cover after test mud injection
Portion's sealing；
C) air pressure feeding mechanism is opened, pressure, the pressure of application are applied to the indoor test mud of cylindrical pressure by air pressure
Power is determined according to the subsurface pressure condition in Practical Project, makes to test mud to the infiltration of geotextiles direction, after a period of time, test
Mud forms mud film in Geotextile, opens ring flange lid, and the laitance above mud film is sucked out with ear washing bulb, exposes mud film,
During the forming of mud film, water is toward flowing in drainage measuring device, per after a period of time by drainage measuring device to filter
The quality record of water is primary, and pressure constantly increases, and drainage amount is being constantly increasing, and records what drainage amount increased by scale of pressure
Process obtains the drainage variation in test slurry penetration film forming procedure；
And infiltration film forming after mud film thickness, moisture content, specifically mud film is taken out, with graduated scale measure thickness,
Moisture content is surveyed in drying.
A kind of device being formed a film and measured mud film amounts of consolidation, air inflow using the mud is to mud film during holding one's breath
The method that consolidation, air inflow are measured, includes the following steps:
A) it is laid with geotextiles on steel wire, replaces stratum using equivalent geotextiles, is determined by stratum effective aperture
The geotextiles mesh number of selection；
B) bottom drain holes of cylindrical pressure room are connected into water injection equipment, the bottom analog stratum into cylindrical pressure room
Reversely water filling is saturated in filter medium, after saturation, is removed water injection equipment, is closed water discharging valve, opens cylindrical pressure ceiling later
The top cover in portion, the injection testing mud into cylindrical pressure room will test the top of cylinder by top cover after test mud injection
Portion's sealing；
C) air pressure feeding mechanism is opened, pressure, the pressure of application are applied to the indoor test mud of cylindrical pressure by air pressure
Power is determined according to the subsurface pressure condition in Practical Project, makes to test mud to the infiltration of geotextiles direction, after a period of time, test
Mud forms mud film in Geotextile, opens ring flange lid, and the laitance above mud film is sucked out with ear washing bulb, exposes mud film；
D) consolidation test: after step c) mud film is formed, hermetically sealable film is fitted on the inner wall of cylindrical pressure room, is beaten
Air pressure feeding mechanism is opened, face pressure is converted by air pressure and applies pressure to mud film, water is toward flowing in drainage measuring device, one section of every mistake
Time is primary to the quality record of drainage by drainage measuring device, and pressure constantly increases, and drainage amount is being constantly increasing, with
Pressure is the process that scale records that drainage amount increases, and when air pressure reaches P value, obtains generating since mud membrane pores volume reduces
Drainage amount, referred to as " consolidation drainage amount "；
E) Air-tight Test: after step c) mud film is formed, air pressure feeding mechanism is opened, is applied by air pressure to mud film and is pressed
Power, water is toward flowing in drainage measuring device, per primary to the quality record of drainage by drainage measuring device after a period of time,
Pressure constantly increases, and drainage amount is being constantly increasing, using pressure as scale record drainage amount increase process, when air pressure reach with
In step d) when same pressure value P, obtains reducing due to mud membrane pores volume and air enters the drainage of mud membrane pores displacement
Amount, referred to as " drainage amount of holding one's breath "；
F) the drainage amount of holding one's breath for obtaining step e) Air-tight Test subtracts the consolidation drainage amount that step d) consolidation test obtains
The as drainage amount that is generated due to air inlet of mud film is also the volume of air into mud film.
As the preferred embodiment of the utility model test method, the hermetically sealable film in step d) is a tubular hermetically sealable film,
Described smooth one end of tubular hermetically sealable film is bonded with mud film, and membranous wall is bonded with the inner wall of cylindrical pressure room, passes through cylindrical pressure room
Additional air is discharged in the side opening of bottom.
As the preferred embodiment of the utility model test method, part of the hermetically sealable film beyond test cylinder is anti-in step d)
Hoop divides anti-hoop portion to pinch seal on cylindrical pressure ceiling end, and through top cover.
The test principle of the utility model is:
In the gentle pressure of face pressure different variations can occur for mud film.It is then consolidated by face pressure, mud film meeting drainage, this part
Water is to be reduced by pore volume and extruded.It is divided into two processes if by air pressure, when pressure ratio is lesser, due to hole
The presence of the surface tension of water, air will enter hole originally, but squeeze motionless, and at this moment, mud film is equivalent to by face pressure, is only sent out
Raw consolidation；When air pressure is sufficiently large, consolidation is still occurring, but air pressure overcomes surface tension, inwards pore water
Face pushes, and drainage amount is reduced by pore volume to be formed with air displacement two parts.
The pressuring method of two experiments is the same, the drainage amount when reaching same pressure of Air-tight Test and consolidation test
Subtract each other, when difference occurs in the two, illustrates that mud film enters air and (for example, pressure, in 100kpa, the two difference is 0, increases to
When 110kPa, the two difference is not 0, then enter air), pressure when air overcomes surface tension to enter hole is exactly air inlet
Value.
Claims (5)
1. the device of a kind of mud film forming and measurement mud film amounts of consolidation, air inflow characterized by comprising
One cylindrical pressure room, the top of cylindrical pressure room are equipped with top cover that is openable or closing cylindrical pressure room, and top cover is equipped with
The bottom of the air inlet being connected with air pressure feeding mechanism, cylindrical pressure room is equipped with drainage hole；
Drainage measuring device is connected by drainage pipeline with the drainage hole, and drainage pipeline is equipped with water discharging valve；
The top that the indoor cylinder bottom of cylindrical pressure is located at drainage hole is equipped with the filter medium for simulated formation, and the filtering is situated between
Matter includes:
Steel wire and the several layers geotextile layer being layed on steel wire；
The barrel of cylindrical pressure room bottom side is equipped with the side opening of exhaust；
One tubular hermetically sealable film, the smooth closing in one end of the tubular hermetically sealable film, another end opening, the tubular hermetically sealable film
Smooth one end is bonded with mud film, and the inner wall of additional air and cylindrical pressure room is discharged by the side opening of cylindrical pressure room bottom for membranous wall
Fitting；
Part of the hermetically sealable film beyond test cylinder is counter to bind round on cylindrical pressure ceiling end, and counter will bind round grips by top cover
Sealing.
2. the device of mud film forming according to claim 1 and measurement mud film amounts of consolidation, air inflow, which is characterized in that institute
Stating cylindrical pressure room includes:
Test cylinder: for the organic glass tubular structure of upper and lower opening, test cylinder top and bottom end respectively with flange seal
Connection；
One top cover is arranged on the flange of test cylinder top, and the two sides of top cover are upper and lower by screw rod fastener and test cylinder
The flange at both ends is fixedly connected, and the contact surface of the flange of top cover and test cylinder top is equipped with sealing ring；
One pedestal is connected to the flange base of the test cylinder lower end, the contact surface of pedestal and the flange of test cylinder bottom end
It is equipped with the concaveconvex structure of sealing, chassis interior is equipped with the drainage hole, and drainage hole passes through pipeline and drainage measuring device
Connection.
3. the device of mud film forming according to claim 2 and measurement mud film amounts of consolidation, air inflow, which is characterized in that bottom
Seat upper surface is equipped with groove, and bottom portion of groove is connected to drainage hole, is followed successively by steel wire and geotextiles on groove from below to up.
4. the device of mud film forming according to claim 1 and measurement mud film amounts of consolidation, air inflow, which is characterized in that institute
Stating air pressure feeding mechanism is air compressor, and air compressor passes through the air inlet phase of admission line and cylindrical pressure ceiling portion
Even, admission line is equipped with pressure regulator valve and air intake valve.
5. the device of mud film forming according to claim 1 and measurement mud film amounts of consolidation, air inflow, which is characterized in that institute
State the steel ladle that drainage measuring device includes electronic balance and is set on electronic balance, the steel ladle be equipped with
The connected hole of drainpipe described in the bottom of cylindrical pressure room.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821288805.0U CN208547560U (en) | 2018-08-10 | 2018-08-10 | The device of mud film forming and measurement mud film amounts of consolidation, air inflow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821288805.0U CN208547560U (en) | 2018-08-10 | 2018-08-10 | The device of mud film forming and measurement mud film amounts of consolidation, air inflow |
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| CN208547560U true CN208547560U (en) | 2019-02-26 |
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ID=65426155
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109900599A (en) * | 2019-04-16 | 2019-06-18 | 盾构及掘进技术国家重点实验室 | A kind of method slurry penetration film forming experimental provision and its measure slurry penetration performance |
-
2018
- 2018-08-10 CN CN201821288805.0U patent/CN208547560U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109900599A (en) * | 2019-04-16 | 2019-06-18 | 盾构及掘进技术国家重点实验室 | A kind of method slurry penetration film forming experimental provision and its measure slurry penetration performance |
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