CN106970181A - A kind of drainage consolidation test device and method of grouting behind shaft or drift lining slurries in the earth formation - Google Patents
A kind of drainage consolidation test device and method of grouting behind shaft or drift lining slurries in the earth formation Download PDFInfo
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- CN106970181A CN106970181A CN201710222512.6A CN201710222512A CN106970181A CN 106970181 A CN106970181 A CN 106970181A CN 201710222512 A CN201710222512 A CN 201710222512A CN 106970181 A CN106970181 A CN 106970181A
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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
Abstract
The present invention relates to a kind of drainage consolidation test device and method of grouting behind shaft or drift lining slurries in the earth formation, experimental rig includes：Pressure feeding mechanism, test cylinder, backpressure device and detection components, there is test cylinder stratum to load room, slurry consolidation drip chamber, grouting pressure conversion chamber, stratum filling room is connected with slurry consolidation drip chamber, and slurry consolidation drip chamber and grouting pressure conversion chamber are separated by barrier film.Test method includes stratum loading stratum filling room；The injection testing slurries into slurry consolidation drip chamber, the injection testing slurries into the barrier film of pressure conversion chamber；Water is injected to the top of grouting pressure conversion chamber inner septum；Carry out consolidated drained test；Determine and recording parameters.The present invention can be the slurries type and grouting parameter for choosing economical rationality the most（Grouting amount, grouting pressure are poor）There is provided reference frame, ensuring engineering safety, it is efficient under the premise of, it is cost-effective.
Description
Technical field
The present invention relates to underground engineering field, the discharging consolidation examination of more particularly to a kind of grouting behind shaft or drift lining slurries in the earth formation
Experiment device and method.
Background technology
With the fast development of China's economy, underground space development rate is improved constantly, the difficulty faced and challenge
It is more and more, wherein control stratum settlement is one of them.Come in practice of construction often through grouting behind shaft or drift lining to formation pore
It is filled, reinforces, so that stratum settlement amount meets design requirement.With continuing to increase for engineering buried depth, penetrating ground is more next
More complicated, ground water pressure more and more higher, the requirement to grouting behind shaft or drift lining is also increasing.Due to the invisibility of underground engineering, make
Obtain consolidation law of the slurries under the conditions of Different Strata unclear, cause the determination to grouting parameter during practice of construction
Selection with slurries type is all often to lean on experience and reference, lacks actual foundation.How to determine that slip casting is joined for Different Strata
Number, selection slurries type, become the topic that numerous engineering staffs pay close attention to.
The content of the invention
It is an object of the present invention to provide a kind of drainage consolidation test device of grouting behind shaft or drift lining slurries in the earth formation, the dress
Mould can be carried out to the discharging consolidation process of the slurries of grouting behind shaft or drift lining in shield tunnel, oil drilling and underground engineering in the earth formation by putting
Intend, while can be grouting parameter in Practical Project（Grouting amount, grouting pressure are poor）Determination offer reference foundation.
To reach above-mentioned purpose, a kind of technical scheme that the present invention is used is：
A kind of drainage consolidation test device of grouting behind shaft or drift lining slurries in the earth formation, it includes：
Pressure feeding mechanism, it is used to provide air pressure；
Test cylinder：It has successively from bottom to top is used for the stratum filling room for loading experiment stratum, for loading experiment slurries
Slurry consolidation drip chamber and grouting pressure conversion chamber, the stratum filling room are connected with slurry consolidation drip chamber, the slurry
Separated between liquid consolidation draining room and grouting pressure conversion chamber by the barrier film of liquid-tight, the grouting pressure conversion chamber with it is described
Pressure feeding mechanism is connected, and the air pressure for pressure feeding mechanism to be provided is converted into hydraulic pressure and provided certainly to the experiment slurries
Normal pressure under above；
Backpressure device, it is connected with the pressure feeding mechanism and stratum filling room respectively, for the pressure to be supplied
The air pressure that device is provided is converted into hydraulic pressure and the counter-pressure to experiment stratum offer from bottom to top；
Detection components, it is used to detect the one or more parameters related to discharging consolidation.
According to a preferred aspect of the present invention, the test cylinder includes being internally formed the lower cylinder that room is loaded on the stratum
Body, the middle cylinder for being detachably connected on the lower shell and being internally formed the slurry consolidation drip chamber, removably
It is connected on the middle cylinder and is internally formed the upper shell of the grouting pressure conversion chamber.The structure is taken, three can be divided
Stratum, experiment slurries and water are tested in part to load, and the filling of various pieces can be preferably controlled while convenient filling
Amount so that experiment work amount is small, time-consuming short, operation is simple and feasible.Wherein, it is detachably connected mode to be not particularly limited, for example
It can be conventional bolt connection.
It is further preferred that the test cylinder also includes the base with the first groove, the lower shell removably connects
It is connected on the base and bottom is connected with first groove, the backpressure device is connected with first groove by pipeline
It is logical.
Preferably, the test cylinder also includes many vertically extending connecting poles, and each connecting pole is from upper
Under sequentially pass through the upper shell, middle cylinder, lower shell and base and connect integrally.Take the structure be conducive into
One step improves the overall stability and sealing of device.
According to one of the present invention specific and preferred aspect, the bottom of the upper shell offers the second groove, second
The collar is provided with groove, the barrier film is latex film, and the emulsion film a set of is located on the collar.The structure is taken, is set
It is convenient, it is easy to operation.
According to the present invention, the latex film preferentially selects ￠ 101*320mm thickness 0.3mm triaxial apparatus standard latex film.
According to the specific aspect of the present invention, the upper shell include stack shell, the ring flange that is arranged at the top of stack shell and
It is fixed on the lid on ring flange.Above-mentioned connecting pole is such as set, and connecting pole may pass through ring flange setting.In a specific implementation
In mode, pressure feeding mechanism is connected on lid to be connected with the grouting pressure conversion chamber.
According to the present invention, the lower shell is preferred to use lucite and is made.
According to the present invention, the backpressure device includes a cylinder and the drainpipe being connected with the bottom of the cylinder.Cylinder
Top is connected with pressure feeding mechanism, the preferred lucite of material of cylinder, before use, needing to add in the cylinder of backpressure device
Enter water.Drainpipe is then connected with the stratum filling room of test cylinder, can be specifically first coupled on base and by first on base
Groove is connected with stratum filling room, and draining valve is preferably provided with drainpipe.
According to a preferred aspect of the present invention, the pressure feeding mechanism includes air compressor and the air pressure
The pressure control unit of contracting machine connection, two ends first are entered with what the pressure control unit and stratum filling room were connected respectively
Tracheae, the second air inlet pipe that two ends are connected with the pressure control unit and the backpressure device respectively, be separately positioned on it is described
The first intake valve and the second intake valve in first air inlet pipe and the second air inlet pipe.Specifically, the pressure control unit includes
Air inlet pressure regulator valve and boost gauge, back-pressure pressure regulator valve and back-pressure pressure gauge.
According to the present invention, the parameter related to discharging consolidation include each indoor pressure, slurry consolidation settling amount with
And the infiltration coefficient after slurry consolidation etc..
Preferably, the detection components include the level detection mechanism for being used to detect liquid level in the grouting pressure conversion chamber
And/or for detecting that the stratum filling room, slurry consolidation drip chamber and grouting pressure convert the pressure detecting of room pressure
Mechanism.Wherein, level detection mechanism is preferably included with graduated U-tube, the two ends of the U-tube respectively with the grouting pressure
The different height position connection of conversion chamber；The pressure detection mechanism preferably includes pore pressure meter.
Preferably, the test cylinder has and is respectively communicated with to be connected with the upper and lower part of the slurry consolidation drip chamber
The interface of constant head permeability experimental facility.In this way, external constant head permeability experimental facility can be oozed after the completion of consolidation to determine
Saturating coefficient.
, should it is a further object to provide a kind of drainage consolidation test method of grouting behind shaft or drift lining slurries in the earth formation
Method takes the drainage consolidation test device of the present invention, and comprises the following steps：
a）, undisturbed sample prepare；
b）, experimental field stratification enter：Load stratum filling interior using the undisturbed sample as experiment stratum；
c）, experiment slurries insert：The injection testing slurries into the slurry consolidation drip chamber, to the grouting pressure conversion chamber
Injection testing slurries in barrier film；
d）, to the grouting pressure conversion chamber inner septum top inject water；
e）, pressure detection mechanism set：Pressure acquisition precision and time interval are set according to the infiltration coefficient on experiment stratum；
f）, slurries discharging consolidation：The normal pressure is provided to the experiment slurries, back-pressure is provided to stratum filling room bottom
Power, carries out consolidated drained test, wherein the normal pressure is set according to Practical Project grouting pressure, the counter-pressure is according to reality
Excavate depth of stratum and Ground-water level setting a）, undisturbed sample prepare；
g）, determine slurry consolidation settling amount：The liquid level change of the grouting pressure conversion chamber reclaimed water is observed, and records liquid level change
Measure corresponding consolidation time；
h）, determine slurry infiltration coefficient：Osmotic coefficient investigating is carried out after the completion of slurry consolidation in the slurry consolidation drip chamber,
Methods described also includes selectable step（i）：In step b）Afterwards, step c）It is preceding to utilize the backpressure device to experiment
Stratum carries out reverse saturation to discharge the air in experiment stratum.
According to the present invention, the consolidation completes to refer to that the pore pressure meter reading on slurry consolidation drip chamber is 0.
Further, the step a）By smearing one layer of vaseline in cutting ring inwall, cutting edge is placed on downwards job site
On stratum, by cutting ring vertical depression, and with native knife is cut along cutting soil sample on the outside of cutting ring, side flanging is cut to soil sample and is higher by cutting ring, uses
Fret saw and the smooth cutting ring two ends soil sample of native knife, and sealing preserve are cut, be used as experiment stratum.
Further, the step c）Slurries are simultaneous grouting slurry in Practical Project.
Further, the step d）In, injected clear water.
Further, the step e）In, using pore pressure meter, pore pressure acquisition precision and time are according to the infiltration coefficient on stratum
Setting, stratum osmotic coefficient<10-6During cm/s, read access time is set to 10s, precision setting for 0.1kPa；Stratum osmotic coefficient>
10-6During cm/s, read access time is set to 2s, precision setting for 0.01kPa, can voluntarily be adjusted according to actual formation.
Preferably, step b）In, permeable stone is first laid in lower shell, experiment stratum is reloaded into.
Because above-mentioned technical proposal is used, the present invention has following advantages and effect compared with prior art：
The drainage consolidation test device of the grouting behind shaft or drift lining slurries that the present invention is provided in the earth formation, actual work is simulated by laboratory test
Journey geological environment, sets different grouting pressure and back-pressure to test the consolidation draining time of different slurries in the earth formation, consolidates
Infiltration coefficient after settling amount and consolidation, with the slurries progress comparative evaluation for intending using, the final slurry for choosing economical rationality the most
Liquid type and grouting parameter（Grouting amount, grouting pressure are poor）, reference frame is provided for Practical Project, engineering safety, height is being ensured
It is cost-effective on the premise of effect.
Brief description of the drawings
Accompanying drawing 1 is the structural representation of the present embodiment；
Accompanying drawing 2 is the profile of grouting pressure conversion chamber in the present embodiment；
Accompanying drawing 3 is the schematic diagram of the collar in the present embodiment；
Accompanying drawing 4 is the schematic diagram of flanged plate in the present embodiment.
Wherein：10th, base；100th, the first groove；11st, lower shell；12nd, middle cylinder；120th, interface；121st, interface；13、
Upper shell；130th, the second groove；14th, ring flange；15th, lid；16th, connecting pole；2nd, backpressure device；20th, lower flange；21st, cylinder
Body；22nd, upper flange plate；3rd, pressure control unit；4th, draining valve；5th, the collar；6th, latex film；70th, the second intake valve；71st, first
Intake valve；8th, air compressor；90th, pore pressure meter；91st, U-tube.
A, permeable stone；B, simulated formation；C, experiment slurries；D, clear water.
Embodiment
Grouting behind shaft or drift lining is to control stratum settlement amount, ensure that section of jurisdiction early stage stabilizes and increases the Main Means of overall impermeability,
Control grouting behind shaft or drift lining effect often through regulation grouting pressure, grouting amount and slurries type in work progress, and slip casting pressure
Conventional construction experience is mostly used for reference in power, the selection of grouting amount and slurries type, the mechanism of action, the determination of each parameter to slurries
Method lacks theoretical foundation.The consolidation testing device that present invention innovation is proposed, from the consolidation mechanism angle of slurries, by surveying
The infiltration coefficient of consolidation draining amount and induration of the different slurries in Different Strata is tried to choose slurries type；The different notes of test
Slurry pressure acts on lower slurry consolidation settling amount to determine the grouting pressure and grouting amount during practice of construction；Test consolidating for slurries
The knot deadline determines whether need second pulp feeding in construction.
With reference to specific embodiment, the present invention is furture elucidated, it should be understood that these embodiments are merely to illustrate this implementation
Example rather than limitation the scope of the present invention, after the present embodiment has been read, those skilled in the art are various to the present invention's
The modification of the equivalent form of value falls within the application appended claims limited range.
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 terminology）With the general understanding identical meaning with the those of ordinary skill in art of the present invention.Should also
Understand, those terms defined in such as general dictionary, which should be understood that, to be had and the meaning in the context of prior art
The consistent meaning of justice, and unless defined as here, will not be explained with idealization or excessively formal implication.
The implication of "and/or" described in the present embodiment refers to that the simultaneous situation of respective individualism or both is wrapped
Including including.
The implication of " inside and outside " is referred to relative to equipment itself described in the present embodiment, the side inside sensing equipment
To be interior, otherwise is outer.
When the implication of " left and right " described in the present embodiment refers to reader just to accompanying drawing, the left side of reader is a left side,
The right of reader is the right side.
The implication of " connection " described in the present embodiment can be that being directly connected between part can also be passed through between part
Other parts are indirectly connected with.
A kind of drainage consolidation test device of grouting behind shaft or drift lining slurries as shown in Figure 1 in the earth formation, including test cylinder, back-pressure
Device 2, pressure feeding mechanism and detection components.Wherein：
Test cylinder includes base 10, the lower shell 11 being detachably connected on base 10, is detachably connected to lower shell 11
On middle cylinder 12, the upper shell 13 that is detachably connected on middle cylinder 12.Upper shell 13 further comprises stack shell, connected
The ring flange 14 being connected on stack shell and the lid 15 being connected on ring flange 14, connect wherein being detachably connected mode for bolt
Connect.In addition, also using six roots of sensation connecting pole（Steel column）16 sequentially pass through the ring flange 14 of upper shell 13, upper shell 13 from top to bottom
Stack shell bottom, middle cylinder 12, lower shell 11 and base 10 link into an integrated entity whole test cylinder.Specifically：
Base 10 is to offer semicircle first groove being connected with the bottom of lower shell 11 on steel circular cylindrical base, base 10
100。
The formation of lower shell 11 stratum filling room, for loading test simulation stratum, lower shell 11 uses lucite, passed through
It is bolted on base.
The formation slurry consolidation drip chamber of middle cylinder 12, for loading experiment slurries, is connected by bolt with lower shell 11,
The upper and lower part of middle cylinder 12 is offered valve is provided with interface 120,121, interface 120,121 respectively, and interface 120,121 is used
Connect constant head permeability test device outside coming, osmotic coefficient investigating is carried out to the slurry after the completion of consolidation.
The formation grouting pressure conversion chamber of upper shell 13, for air pressure to be converted into hydraulic pressure, the bottom of upper shell 13 is offered
Second groove 130, the second groove 130 has been embedded in the barrier film that liquid-tight is arranged on the steel collar 5, the collar 5, such as latex film 6, such as
Fig. 2, shown in 3.
Ring flange 14 uses steel annulus, and outer ring is provided with bolt hole, for through connecting pole 16, inner ring to be provided with bolt hole,
For connecting lid 15, there is sealing ring to be used for sealing between ring flange 14 and upper shell 13, lid 15, as shown in Figure 4.
Backpressure device 2 include lower flange 20, be connected on lower flange 20 cylinder 21, be connected to it is upper on cylinder 21
Ring flange 22, four connecting poles（Steel column）Lower flange 20, upper flange plate 22 are connected, cylinder 21 and lower flange 20, upper method
The junction of blue disk 22 has sealing ring to be used for sealing, and cylinder 21 uses lucite, the bottom of cylinder 21 connection drainpipe and base
10 the first groove 100 is connected, and draining valve 4 is provided with drainage pipeline.
Pressure feeding mechanism includes air compressor 8, the pressure control unit 3 connected with air compressor 8, two ends difference
With pressure control unit 3 and the first air inlet pipe for connecting of stratum filling room, two ends respectively with pressure control unit 3 and backpressure device
Second air inlet pipe of 2 connections, the first intake valve 71 being separately positioned in the first air inlet pipe and the second air inlet pipe and the second air inlet
Valve 70.Pressure control unit 3 includes the cylinder being made of lucite, air inlet adjustment valve and boost gauge, back-pressure pressure regulation
Valve and back-pressure pressure gauge.
It is used to detect the one or more parameters related to discharging consolidation detection components, and this example includes being used to detect note
The level detection mechanism of liquid level in pressure conversion chamber is starched, for detecting stratum filling room, slurry consolidation drip chamber and slip casting pressure
Power converts the pressure detection mechanism of room pressure.Wherein：Pressure detection mechanism includes pore pressure meter 90, stratum filling room connection pore pressure
The super quiet hole water stress that meter 90 is used in formation testing, undisturbed soil is in consolidation completion status before being started with guarantee test；Slurry
Liquid consolidation draining room connection pore pressure meter 90 is used for reading the super quiet hole water stress in slurries；Grouting pressure conversion chamber connects pore pressure
Meter 90 is used for the change of grouting pressure during monitoring test.Level detection mechanism is included with graduated U-tube 91, U-tube
91 two ends are connected with the different height position of grouting pressure conversion chamber respectively.Detection components can also further comprise that constant head oozes
Saturating experimental provision.
The method tested using the present embodiment device is illustrated in detail below：
a）, undisturbed sample prepare：Sampled using cutting ring, one layer of vaseline is smeared in cutting ring inwall, cutting edge is placed on downwards construction
On live stratum, by cutting ring vertical depression, and with native knife is cut along cutting soil sample on the outside of cutting ring, side flanging, which is cut to soil sample, is higher by ring
Knife, with fret saw and the smooth cutting ring two ends soil sample of native knife, and sealing preserve is cut, is used as experiment stratum；
b）, experimental field stratification enter：Lower shell 11 is fixed on base 10 and sealed, first the laying permeable stone in lower shell 11,
Undisturbed soil sample and cutting ring are integrally loaded in lower shell 1 again, reverse saturation is used by backpressure device 2, from bottom to top to examination
Test stratum and carry out saturation, the air in base 10, lower shell 11 is discharged；
c）, experiment slurries insert：Middle cylinder 12 is fixed on lower shell 11 and sealed, experiment is loaded into middle cylinder 12
Slurries, experiment slurries use simultaneous grouting slurry in Practical Project, and the collar 5 for being cased with latex film 6 is embedded in into the of upper shell 13
In two grooves 130, whole cylinder is connected by connecting pole 16 and ring flange 14, sealed, experiment slurry is loaded in latex film 6
Liquid, exhaust sealing；
d）, clear water injection：In the top injected clear water of latex film 6, water level control the lower port top of U-tube 91 to upper port it
Between；
e）, pore pressure meter set：The time interval and acquisition precision for reading pore pressure are set, by the pore pressure reading of pore pressure meter 90 and collection
Time resets, and pore pressure acquisition precision and time set according to the infiltration coefficient on stratum, such as stratum osmotic coefficient<10-6During cm/s, read
It is that 10s, precision setting are 0.1kPa to take set of time；Stratum osmotic coefficient>10-6During cm/s, read access time is set to 2s, precision
It is set to 0.01kPa；
f）, slurries discharging consolidation：Malleation and back-pressure are set by pressure feeding mechanism 3 respectively, boost gauge and back-pressure pressure is treated
After power table is stable, the first intake valve 71, the draining valve 4 on base 10, the second intake valve 70 are opened, slurry consolidation draining examination is carried out
Test, consolidation pressure is determined according to Practical Project grouting pressure, back-pressure is voluntarily set according to excavation depth of stratum and Ground-water level
It is fixed；
g）, determine slurry consolidation settling amount：The liquid level scale of U-tube 91 is observed, and is recorded by stopwatch under each setting scale
Corresponding consolidation time；Depending on the setting of the scale of pipe 91 is monitored according to slurry consolidation drainage speed, such as stratum osmotic coefficient>10- 6During cm/s, it is set as 1mm, stratum osmotic coefficient<10-6During cm/s, 5mm is set to；
h）, determine slurry infiltration coefficient：Connect constant head permeability experimental facility outside the interface 120,121 of middle cylinder 12, to solid
Slurry after the completion of knot carries out osmotic coefficient investigating, and when the reading of pore pressure meter 90 of slurry consolidation drip chamber is 0, consolidation is completed.
Claims (10)
1. a kind of drainage consolidation test device of grouting behind shaft or drift lining slurries in the earth formation, it is characterised in that：Including：
Pressure feeding mechanism, it is used to provide air pressure；
Test cylinder：It has successively from bottom to top is used for the stratum filling room for loading experiment stratum, for loading experiment slurries
Slurry consolidation drip chamber and grouting pressure conversion chamber, the stratum filling room are connected with slurry consolidation drip chamber, the slurry
Separated between liquid consolidation draining room and grouting pressure conversion chamber by the barrier film of liquid-tight, the grouting pressure conversion chamber with it is described
Pressure feeding mechanism is connected, and the air pressure for pressure feeding mechanism to be provided is converted into hydraulic pressure and provided certainly to the experiment slurries
Normal pressure under above；
Backpressure device, it is connected with the pressure feeding mechanism and stratum filling room respectively, for the pressure to be supplied
The air pressure that device is provided is converted into hydraulic pressure and the counter-pressure to experiment stratum offer from bottom to top；
Detection components, it is used to detect the one or more parameters related to discharging consolidation.
2. the drainage consolidation test device of grouting behind shaft or drift lining slurries in the earth formation according to claim 1, it is characterised in that：It is described
Test cylinder includes being internally formed the lower shell of the stratum filling room, is detachably connected on the lower shell and is internally formed
The middle cylinder of the slurry consolidation drip chamber, it is detachably connected on the middle cylinder and is internally formed the slip casting pressure
The upper shell of power conversion chamber.
3. the drainage consolidation test device of grouting behind shaft or drift lining slurries in the earth formation according to claim 2, it is characterised in that：It is described
Test cylinder also include with the first groove base, the lower shell be detachably connected on the base and bottom with it is described
First groove is connected, and the backpressure device passes through pipeline communication with first groove.
4. the drainage consolidation test device of grouting behind shaft or drift lining slurries in the earth formation according to claim 3, it is characterised in that：It is described
Test cylinder also includes many vertically extending connecting poles, and each connecting pole sequentially passes through the upper cylinder from top to bottom
Body, middle cylinder, lower shell and base are connected integrally.
5. the drainage consolidation test device of grouting behind shaft or drift lining slurries in the earth formation according to claim 2, it is characterised in that：It is described
The bottom of upper shell offers and the collar is provided with the second groove, second groove, and the barrier film is latex film, the latex
Membrane cover is located on the collar.
6. the drainage consolidation test device of grouting behind shaft or drift lining slurries in the earth formation according to claim 1, it is characterised in that：It is described
Pressure feeding mechanism include air compressor, the pressure control unit connected with the air compressor, two ends respectively with it is described
The first air inlet pipe that room is connected is loaded on pressure control unit and the stratum, two ends respectively with the pressure control unit and described
Second air inlet pipe of backpressure device connection, the first intake valve for being separately positioned in first air inlet pipe and the second air inlet pipe and
Second intake valve.
7. the drainage consolidation test device of grouting behind shaft or drift lining slurries in the earth formation according to claim 1, it is characterised in that：It is described
Detection components include being used for detecting in the grouting pressure conversion chamber level detection mechanism of liquid level and/or described for detecting
Floor filling room, slurry consolidation drip chamber and grouting pressure convert the pressure detection mechanism of room pressure.
8. the drainage consolidation test device of grouting behind shaft or drift lining slurries in the earth formation according to claim 7, it is characterised in that：It is described
Level detection mechanism is included with graduated U-tube, the difference of the two ends of the U-tube respectively with the grouting pressure conversion chamber
Height and position is connected；The pressure detection mechanism includes pore pressure meter.
9. the drainage consolidation test device of grouting behind shaft or drift lining slurries in the earth formation according to claim 1, it is characterised in that：It is described
Test cylinder has to be respectively communicated with to be connected constant head permeability experimental facility with the upper and lower part of the slurry consolidation drip chamber
Interface.
10. a kind of drainage consolidation test method of grouting behind shaft or drift lining slurries in the earth formation, it is characterised in that：This method is taken such as right
It is required that drainage consolidation test device described in any one of 1 to 9 claim, and comprise the following steps：
a）, undisturbed sample prepare；
b）, experimental field stratification enter：Load stratum filling interior using the undisturbed sample as experiment stratum；
c）, experiment slurries insert：The injection testing slurries into the slurry consolidation drip chamber, to the grouting pressure conversion chamber
Injection testing slurries in barrier film；
d）, to the grouting pressure conversion chamber inner septum top inject water；
e）, pressure detection mechanism set：Pressure acquisition precision and time interval are set according to the infiltration coefficient on experiment stratum；
f）, slurries discharging consolidation：The normal pressure is provided to the experiment slurries, back-pressure is provided to stratum filling room bottom
Power, carries out consolidated drained test, wherein the normal pressure is set according to Practical Project grouting pressure, the counter-pressure is according to reality
Excavate depth of stratum and Ground-water level setting；
g）, determine slurry consolidation settling amount：The liquid level change of the grouting pressure conversion chamber reclaimed water is observed, and records liquid level change
Measure corresponding consolidation time；
h）, determine slurry infiltration coefficient：Osmotic coefficient investigating is carried out after the completion of slurry consolidation in the slurry consolidation drip chamber,
Methods described also includes selectable step（i）：In step b）Afterwards, step c）It is preceding to utilize the backpressure device to experiment
Stratum carries out reverse saturation to discharge the air in experiment stratum.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107703031A (en) * | 2017-11-24 | 2018-02-16 | 中国矿业大学 | A kind of air pressure driving loose media grouting simulation test device and test method |
| CN110044713A (en) * | 2019-04-22 | 2019-07-23 | 河海大学 | A kind of the piston vapour-pressure type consolidation testing device and method of grouting behind shaft or drift lining slurries |
| CN114235677A (en) * | 2021-11-29 | 2022-03-25 | 苏州大学 | Testing arrangement of clay material filling performance |
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| CN107703031A (en) * | 2017-11-24 | 2018-02-16 | 中国矿业大学 | A kind of air pressure driving loose media grouting simulation test device and test method |
| CN107703031B (en) * | 2017-11-24 | 2019-06-21 | 中国矿业大学 | A kind of air pressure driving loose media grouting simulation test device and test method |
| CN110044713A (en) * | 2019-04-22 | 2019-07-23 | 河海大学 | A kind of the piston vapour-pressure type consolidation testing device and method of grouting behind shaft or drift lining slurries |
| CN114235677A (en) * | 2021-11-29 | 2022-03-25 | 苏州大学 | Testing arrangement of clay material filling performance |
| CN114235677B (en) * | 2021-11-29 | 2023-01-17 | 苏州大学 | Testing arrangement of clay material filling performance |
| WO2023092906A1 (en) * | 2021-11-29 | 2023-06-01 | 苏州大学 | Device for testing filling performance of clay material |
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