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 PDF

Info

Publication number
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
Authority
CN
China
Prior art keywords
mud film
cylindrical pressure
air
drainage
consolidation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201821288805.0U
Other languages
Chinese (zh)
Inventor
朱伟
王超
钱勇进
王璐
徐超
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hohai University HHU
Original Assignee
Hohai University HHU
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hohai University HHU filed Critical Hohai University HHU
Priority to CN201821288805.0U priority Critical patent/CN208547560U/en
Application granted granted Critical
Publication of CN208547560U publication Critical patent/CN208547560U/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

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

The device of mud film forming and measurement mud film amounts of consolidation, air inflow
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.
CN201821288805.0U 2018-08-10 2018-08-10 The device of mud film forming and measurement mud film amounts of consolidation, air inflow Active CN208547560U (en)

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

Publications (1)

Publication Number Publication Date
CN208547560U true CN208547560U (en) 2019-02-26

Family

ID=65426155

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201821288805.0U Active CN208547560U (en) 2018-08-10 2018-08-10 The device of mud film forming and measurement mud film amounts of consolidation, air inflow

Country Status (1)

Country Link
CN (1) CN208547560U (en)

Cited By (1)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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

Similar Documents

Publication Publication Date Title
CN105527384B (en) A kind of grouting simulation test device and its test method
CN105334142B (en) A kind of experimental provision formed for simulating shield mud film
CN108918390A (en) The device and method of mud film forming and measurement mud film amounts of consolidation, air inflow
US11047789B2 (en) Irregular rock sample high-pressure permeation device with adjustable flow direction and test method thereof
CN106525526B (en) A kind of measuring method of the high pressure water injection of raw coal containing gas and radial gas permeation rate
CN205483943U (en) Experimental device for mud dipes stratum formation sludge -biofilm among simulation slurry shield
CN103398933A (en) Constant-pressure concrete permeability testing device
CN105866337A (en) Device and method for testing slurry shield excavation surface mud film formation and mud film air tightness under high pressure
CN208547560U (en) The device of mud film forming and measurement mud film amounts of consolidation, air inflow
CN109000967A (en) The System and method for of the acquisition of native stone binary medium earth pillar and hydrologic parameter measurement
CN110208493A (en) Pore expansion theory experimental rig and its test method
CN107941604A (en) A kind of consolidation testing device and test method of gassiness soil
CN106769747B (en) The experimental rig and its test method that soil body inflation resistance is seeped
CN205262912U (en) Experimental device for it constructs sludge -biofilm formation to be used for simulating shield
CN110018097A (en) The two-way seepage through soil mass experimental rig and test method of the detachable sample preparation sampling of multilayer
CN110487988A (en) A kind of air pressure-loading type one-dimensional consolidation infiltration joint test device
CN208140705U (en) It is a kind of can automatic collection pore pressure permeability consolidometer
CN109342150A (en) A kind of experimental rig and method for gassiness soil sample consolidation test and permeability test
CN108397192A (en) A kind of simple device and its method of grittiness soil body gas permeability measurement
CN205593991U (en) High pressure is slurry shield excavation face mud film forming and sludge -biofilm air tightness testing device down
CN108385737A (en) A kind of vacuum preloading soft groundsill reinforcing sunykatuib analysis instrument and test method
CN209327074U (en) A kind of experimental rig for gassiness soil sample consolidation test and permeability test
CN109781603B (en) Ultra-deep stratum shield synchronous grouting osmotic diffusion simulation nuclear magnetic experiment system and method
CN207908319U (en) A kind of film or flaky material permeability test device
CN207850876U (en) A kind of bentonite waterproof blanket test specimen tube and the apparatus for measuring permeability coefficient containing the test specimen tube

Legal Events

Date Code Title Description
GR01 Patent grant
GR01 Patent grant