CN106124364B - A kind of test method and device measuring shield sediment improvement mixture creeping - Google Patents
A kind of test method and device measuring shield sediment improvement mixture creeping Download PDFInfo
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- CN106124364B CN106124364B CN201610587809.8A CN201610587809A CN106124364B CN 106124364 B CN106124364 B CN 106124364B CN 201610587809 A CN201610587809 A CN 201610587809A CN 106124364 B CN106124364 B CN 106124364B
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- driving shaft
- external disk
- angular velocity
- creeping
- mixture
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N11/00—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties
- G01N11/10—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material
- G01N11/14—Investigating flow properties of materials, e.g. viscosity, plasticity; Analysing materials by determining flow properties by moving a body within the material by using rotary bodies, e.g. vane
Abstract
The invention discloses a kind of test methods and device for measuring shield sediment improvement mixture creeping, Level Promoting rocker arm drives driving shaft rotation, being installed on the stirring blade on driving shaft pushes the muck mixture in native storehouse to flow, effect of the flowing of muck mixture in native storehouse to the stirring blade applied force being installed on the inside of external disk, rotates external disk；According to law of conservation of energy, the mixture in native storehouse has energy consumption when flowing, and external disk quality is larger, and when driving shaft makees uniform angular velocity rotation with external disk, the two has the difference of an angular speed；Utilize the relation curve between the ratio between angular velocity difference and active axis angular rate and driving shaft rotating torque, the effect and the correlation of sediment improvement mixture creeping of quantitative analysis power.Present device is simple, and operation is simple；Therefore, the present invention is the test method and device of a kind of quantitative measurement of effectively reliable shield sediment improvement mixture creeping index.
Description
Technical field
The present invention relates to mould in Earth Pressure Balance Shield Technology field more particularly to a kind of shield sediment improvement about mixture
The test method and device of the measurement of fluidity index.
Background technique
With National Highway Feasibility of developing track transportation, tunnel construction technology using more and more extensive, earth pressure balanced shield, EPBS exists
The status that can not replace is played in constructing tunnel, and it is exactly that will cut from excavation face that earth pressure balanced shield, EPBS construction is successfully crucial
The dregs to get off forms a kind of Plastic Flow state in native storehouse, and the dregs of Plastic Flow state is applying soil pressure to excavation face
While can by screw conveyor pipeline be discharged Tu Cang, so that shield is continuously tunneled, but earth pressure balanced shield, EPBS is on different ground
Driving can encounter problems in layer, show as follows:
1, a critical component of the cutterhead as shield machine, underground driving can encounter Different Strata, from mud, clay to
Hard rock etc., for cutterhead under certain revolving speed and pressure, the cutter being installed on shield machine bears very high load and temperature, badly
Operating condition can reduce cutting-tool's used life；
2, since spoil lacks mobility, under the effect and higher temperature environment of shield machine propelling pressure, in soil
Densification, consolidation draining occur in storehouse, is formed " mud cake ", screw conveyor line clogging and cutter working efficiency is caused to reduce,
To influence to tunnel；
3, when working in the big stratum of water content, screw machine dumper exit is gushed, and causes dregs in soil
Accumulation and tunnel internal water accumulation, influence drivage efficiency in storehouse.
So by the quantitative measurement to mixture creeping index, determine that dregs appropriate changes in shield tunneling process
Good construction parameter carries out sediment improvement, it appears particularly important.
Summary of the invention
First technical problem to be solved by this invention, which is to provide one kind, effectively and precisely can quantitatively measure mixture
The device of creeping index.
Second technical problem to be solved by this invention is the device mentioned through the invention, and the sediment improvement carried out is mixed
Close the test method of the measurement of object creeping index.
In order to solve first technical problem: the invention proposes a kind of measurement shield sediment improvement mixture creepings
Test method and device, including driving shaft and external disk, rocker arm horizontal cross connect driving shaft, and two weight beams are set to and shake
Arm both ends.
Weight beam is made of open top receptacle and bottom opening container and spring, and open top receptacle is inverted in
It in bottom opening container, and is connected by spring, weight beam dial is located at open top receptacle outer surface, is pushing up
Compressed spring during portion's open containers stress, so that leading in a part retraction bottom opening container of open top receptacle
Reading weight beam dial is crossed, stress size can be calculated；
Driving shaft horizontal circle is located at driving shaft outer surface, and external disk horizontal circle is located at external disk outer surface.
External disk is internally provided with and the stirring blade of active axis connection and the stirring blade connecting with external disk inner sidewall；It is stirring
It mixes blade middle position and is additionally provided with the pipeline injecting channel communicated with driving shaft；Driving shaft inner hollow, one end are equipped with and open
Mouthful, other end sealing；It is linked into the upper end opening of driving shaft after air pressure input pipe and modifying agent input pipe are in parallel；In use,
Respectively by air pressure input pipe and modifying agent input pipe, input air pressure and modifying agent, in the common work of air pressure and spindle rotation
Under, modifying agent sheds from injecting channel.
External disk inner hollow, bottom surface closing, external disk top surface is equipped with external disk top cover.
In order to solve second technical problem: utilizing above-mentioned experimental provision of the invention, a kind of shield slag carried out
The test method of the quantitative measurement of the good mixture creeping index of land reform specifically includes two steps: first step push the spring dynamometry
Meter is to horizontally rotate rocker arm, after driving shaft makees uniform angular velocity rotation with external disk, the angular velocity omega of external diskpiWith the angle of driving shaft
Fast ωaiDegree has a difference DELTA ωi；When driving shaft and external disk make uniform angular velocity rotation, read in the equal length time
ΔtiScale on the outside of scale knots modification and external disk on interior driving shaft outer surface horizontal circle on horizontal surface dial
Knots modification obtains driving shaft rotational angle Δ θaiAnd external disk rotational angle Δ θpi；When reading weight beam inner spring by pressure
Length variation delta xi；Measure weight beam central axes and driving shaft central axes spacing L；Second step changes thrust, repeats
First step operation obtains multiple groups Δ t after driving shaft makees uniform angular velocity rotation with external diskiInterior Δ θai、Δθpi、Δxi, and press
Δ ω is calculated separately according to formula 1 to formula 5i、ωai、ωpi、FiAnd T, by calculating in different power FiUnder the action of driving shaft with
External disk makees angular velocity difference Δ ω when uniform angular velocity rotationi, driving shaft can be accurately obtained and external disk makees uniform angular velocity rotation
When angular velocity difference and driving shaft rotational angular velocity between relation curve, it is mixed that quantitative response sediment improvement is lost by energy attenuation
Close object creeping；Pass through the angular velocity difference and active axis angular rate for being accurately obtained driving shaft and when external disk makees uniform angular velocity rotation
The ratio between (Δ ωi/ωai) and driving shaft rotating torque Ti, driving shaft motive force FiBetween relation curve.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram for the experimental rig for measuring shield sediment improvement mixture creeping of the present invention.
Schematic diagram.
Fig. 2 is external disk diagrammatic cross-section.
Fig. 3 is weight beam front elevation and sectional view.
1. external disk, 2. driving shafts, 3. rocker arms, 4. weight beams, 5. external disk horizontal circles, 6. driving shaft horizontal scales
Disk, 7. driving shaft stirring blades, the stirring blade of 8. external disks, 9. air pressure input pipes, 10 modifying agent input pipes, 11 weight beams
Dial, 12 open top receptacles, 13 springs, 14 open top receptacles, 15. external disk upper covers, 16. injecting channels
Specific embodiment
Below in conjunction with attached drawing, specific embodiments of the present invention will be described in detail:
Embodiment 1
Referring to Fig. 1 and Fig. 2, the examination provided by the invention realizing shield sediment improvement mixture creeping index quantification and measuring
Experiment device, including driving shaft 2 and external disk 1,3 horizontal cross of rocker arm connect driving shaft 2, and two sizes and the identical spring of specification are surveyed
Power meter 4, which is respectively perpendicular, is set to 3 both ends of rocker arm.4 detail drawing of weight beam is as shown in figure 3, weight beam 4 is held by top opening
Device 12 and bottom opening container 14 and spring 13 are constituted, and open top receptacle 12 is inverted in bottom opening container 14, and is led to
13 elastic connection of spring is crossed, weight beam dial 11 is located at 12 outer surface of open top receptacle, in open top receptacle 12
During stress, compressed spring 13, so that passing through reading in a part retraction bottom opening container 14 of open top receptacle 12
Weight beam dial 11 is taken, stress size can be calculated.
Driving shaft horizontal circle 6 is located at 2 outer surface of driving shaft, and external disk horizontal circle 5 is located at 1 outside table of external disk
Face, the lateral perimeter of the scale difference even partition driving shaft 2 on driving shaft horizontal circle 6 and external disk horizontal circle 5 with
The lateral perimeter of external disk 1, effect are that be respectively used to the variable quantity of scale in cooling water of units of measurement time be driving shaft and external disk
Angular speed.
External disk 1 is internally provided with the stirring blade 7 connecting with driving shaft 2 and the stirring blade connecting with external disk inner sidewall 8.
The pipeline injecting channel 16 communicated with driving shaft 2 is additionally provided in 7 middle position of stirring blade.2 inner hollow of driving shaft, one
End is equipped with opening, other end sealing；It opens the upper end that driving shaft 2 is linked into after 10 parallel connection of air pressure input pipe 9 and modifying agent input pipe
On mouth.In use, respectively by air pressure input pipe 9 and modifying agent input pipe 10, input air pressure and modifying agent, in air pressure and active
Under the collective effect that axis 2 rotates, modifying agent sheds from injecting channel 16.
1 inner hollow of external disk, bottom surface closing, external disk top surface is equipped with external disk top cover 15, is formed by enclosure space and is known as
Tu Cang.It opens top cover and holds dregs sample into external disk, carry out that top closure external disk top surface is installed when dregs sample improved test
?.
Embodiment 2
Referring to Fig. 1 and Fig. 2, the improvement mixture creeping carried out using the experimental rig of the invention in embodiment 1
The test method of the quantitative measurement of index, includes the following steps:
Step 1: push the spring dynamometer to horizontally rotate rocker arm, is added by dregs sample of the driving shaft into external disk
Modifying agent flows the muck mixture in native storehouse, so that the effect to the stirring blade applied force being installed on the inside of external disk, makes
External disk rotation；According to law of conservation of energy, the mixture in native storehouse has energy consumption when flowing, and external disk quality is larger, institute
With after driving shaft and external disk make uniform angular velocity rotation, the angular velocity omega of external diskpiWith the angle speed ω of driving shaftaiDegree has one
A difference DELTA ωi；When driving shaft and external disk make uniform angular velocity rotation, read in equal length time Δ tiOutside interior driving shaft
Scale knots modification on the outside of scale knots modification and external disk on the horizontal circle of side surface on horizontal surface dial obtains actively
Axis rotational angle Δ θaiAnd external disk rotational angle Δ θpi；Read length variation delta of the weight beam inner spring by pressure when
xi；Measure weight beam central axes and driving shaft central axes spacing L；
In formula (1)
ωaiFor driving shaft rotational angular velocity
ΔθaiFor Δ tiThe angle change value that interior driving shaft turns over；
ΔtiFor when driving shaft and external disk make uniform angular velocity rotation, the segment length time；
In formula (2)
ωpiFor external disk rotational angular velocity；
ΔθpiFor Δ tiThe angle change value that internal and external disk turns over；
ΔtiFor when driving shaft and external disk make uniform angular velocity rotation, the segment length time；
Δωi=ωai-ωpi (3)
In formula (3)
ΔωiFor the difference of driving shaft and external disk angular speed；
Fi=k Δ xi (4)
In formula (4)
K is weight beam coefficient；
ΔxiFor Δ tiLength variable quantity when time inner spring dynamometer inner spring is by pressure；
FiFor after driving shaft and external disk make uniform angular velocity rotation, Δ tiThe constant thrust at moment；
T=Fi·L (5)
In formula (5)
L is weight beam central axes and driving shaft central axes spacing；
T is Δ t after driving shaft makees uniform angular velocity rotation with external diskiThe torque at moment.
Step 2: changing thrust, first step operation is repeated, after driving shaft makees uniform angular velocity rotation with external disk, is obtained
Multiple groups Δ tiInterior Δ θai、Δθpi、Δxi, and Δ ω is calculated separately according to formula (1) (2) (3) (4) (5)i、ωai、ωpi、FiWith
T, by calculating in different power FiUnder the action of the angular velocity difference Δ ω of driving shaft and external disk when making uniform angular velocity rotationi, can
It is accurately obtained driving shaft and angular velocity difference when external disk makees uniform angular velocity rotation and the relation curve between driving shaft rotational angular velocity,
In different power FiUnder the action of, pass through the relation curve drawn out (abscissa and ordinate respectively represents driving shaft and external disk is made
Angular velocity difference and driving shaft rotational angular velocity when uniform angular velocity rotates), we can more intuitively obtain sediment improvement mixing
The power of object creeping.Quantitative response sediment improvement mixture creeping is lost by energy attenuation；By being accurately obtained actively
The ratio between angular velocity difference and active axis angular rate when axis and external disk make uniform angular velocity rotation (Δ ωi/ωai) and driving shaft rotation
Torque Ti, driving shaft motive force FiBetween relation curve, by the relation curve drawn out, (abscissa and ordinate are respectively represented
The ratio between angular velocity difference and active axis angular rate when driving shaft and external disk make uniform angular velocity rotation (Δ ωi/ωai) and driving shaft
Rotating torque Ti), we can more intuitively obtain influence degree of the effect to sediment improvement mixture creeping of power.
Claims (2)
1. a kind of experimental rig for measuring shield sediment improvement mixture creeping, including driving shaft (2) and external disk (1), rocker arm
(3) horizontal cross connection driving shaft (2), two weight beams (4) are set to rocker arm (3) both ends；
Weight beam (4) is made of open top receptacle (12) and bottom opening container (14) and spring (13), and top is opened
Mouth container (12) is inverted in bottom opening container (14), and passes through spring (13) elastic connection, weight beam dial
(11) it is located at open top receptacle (12) outer surface, during open top receptacle (12) stress, compressed spring (13) makes
It obtains in a part retraction bottom opening container (14) of open top receptacle (12), passes through and read weight beam dial
(11), stress size can be calculated；
Driving shaft horizontal circle (6) is located at driving shaft (2) outer surface, and external disk horizontal circle (5) is located on the outside of external disk (1)
Surface；
The stirring that external disk (1) is internally provided with the stirring blade (7) connecting with driving shaft (2) and connect with external disk (1) inner sidewall
Blade (8)；The pipeline injecting channel (16) communicated with driving shaft (2) is additionally provided in stirring blade (7) middle position；Driving shaft
(2) inner hollow, one end are equipped with opening, other end sealing；Air pressure input pipe (9) and modifying agent input pipe (10) parallel connection are followed by
Enter onto the upper end opening of driving shaft (2)；In use, passing through air pressure input pipe (9) and modifying agent input pipe (10), input respectively
Air pressure and modifying agent, under the collective effect that air pressure and driving shaft (2) rotate, modifying agent sheds from injecting channel (16)；
External disk (1) inner hollow, bottom surface closing, external disk top surface is equipped with external disk top cover (15)；
The size and specification of two weight beams (4) are all the same, are respectively perpendicular and are set to rocker arm (3) both ends；
The outside of scale difference even partition driving shaft (2) on driving shaft horizontal circle (6) and external disk horizontal circle (5)
The lateral perimeter of perimeter and external disk (1), effect are that be respectively used to the variable quantity of scale in cooling water of units of measurement time be driving shaft
With the angular speed of external disk.
2. a kind of use the test side as described in claim 1 for measuring shield sediment improvement mixture creeping experimental rig
Method comprises the following steps that
S1: push the spring dynamometer is to horizontally rotate rocker arm, after driving shaft makees uniform angular velocity rotation with external disk, the angle of external disk
Speed omegapiWith the angle speed ω of driving shaftaiDegree has a difference DELTA ωi；When driving shaft and external disk make uniform angular velocity rotation,
It reads in equal length time Δ tiIt is horizontal on the outside of scale knots modification and external disk on interior driving shaft outer surface horizontal circle
Scale knots modification on figure disk obtains driving shaft rotational angle Δ θaiAnd external disk rotational angle Δ θpi；Spring is read to survey
Length variation delta x when power meter inner spring is by pressurei；Measure weight beam central axes and driving shaft central axes spacing L；
ω in formula (1)aiFor driving shaft rotational angular velocity, Δ θaiFor Δ tiThe angle change value that interior driving shaft turns over, Δ tiBased on
Moving axis and external disk make the time span of uniform angular velocity rotation；
ω in formula (2)piFor external disk rotational angular velocity, Δ θpiFor Δ tiThe angle change value that internal and external disk turns over, Δ tiFor driving shaft
Make the time span of uniform angular velocity rotation with external disk；
Δωi=ωai-ωpi (3)
Δ ω in formula (3)iFor the difference of driving shaft and external disk angular speed；
Fi=k Δ xi (4)
K is weight beam coefficient, Δ x in formula (4)iFor Δ tiLength when time inner spring dynamometer inner spring is by pressure becomes
Change amount,
FiFor after driving shaft and external disk make uniform angular velocity rotation, Δ tiThe constant thrust at moment；
T=Fi·L (5)
L is weight beam central axes and driving shaft central axes spacing in formula (5), and T is when driving shaft and external disk make even angle rate
After degree rotation, Δ tiThe torque at moment；
S2: changing thrust, repeats first step operation, after driving shaft makees uniform angular velocity rotation with external disk, obtains multiple groups Δ tiIt is interior
Δθai、Δθpi、Δxi, and Δ ω is calculated separately according to formula (1) (2) (3) (4) (5)i、ωai、ωpi、FiAnd T, pass through calculating
In different power FiUnder the action of the angular velocity difference Δ ω of driving shaft and external disk when making uniform angular velocity rotationi, master can be accurately obtained
The relation curve between angular velocity difference and driving shaft rotational angular velocity when moving axis and external disk make uniform angular velocity rotation, is declined by energy
Detraction consumption quantitative response sediment improvement mixture creeping；
By being accurately obtained driving shaft and the ratio between angular velocity difference when external disk makees uniform angular velocity rotation and active axis angular rate (Δ
ωi/ωai) and driving shaft rotating torque TiBetween relation curve, the effect of quantitative analysis power and sediment improvement mixture creeping
Correlation.
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| CN108982296B (en) * | 2018-04-27 | 2020-10-09 | 上海建工集团股份有限公司 | Device and method for measuring pumpability of low-flow concrete |
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| SU555323A1 (en) * | 1976-01-04 | 1977-04-25 | Предприятие П/Я А-7332 | Rotational Viscometer |
| CN87207349U (en) * | 1987-07-31 | 1988-03-09 | 上海建筑材料工业学院 | Rheometer for determining two-parameter with rotary inner vane in outer drum |
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| CN203405393U (en) * | 2013-07-15 | 2014-01-22 | 中国地质大学（北京） | Rheological property measurement device for improved sandy gravel soil body in earth pressure balance shield process |
| CN205844133U (en) * | 2016-07-25 | 2016-12-28 | 中交隧道工程局有限公司南京分公司 | A kind of assay device measuring shield sediment improvement mixture creeping |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101717435B1 (en) * | 2014-12-04 | 2017-03-17 | 부경대학교 산학협력단 | Vane type rheometer considering water flow characteristics, and method for obtaining rheological analysis technique using thereof |
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU555323A1 (en) * | 1976-01-04 | 1977-04-25 | Предприятие П/Я А-7332 | Rotational Viscometer |
| CN87207349U (en) * | 1987-07-31 | 1988-03-09 | 上海建筑材料工业学院 | Rheometer for determining two-parameter with rotary inner vane in outer drum |
| CN2932369Y (en) * | 2006-07-05 | 2007-08-08 | 崔兆星 | A rheometer |
| CN101915715A (en) * | 2010-07-09 | 2010-12-15 | 北京工业大学 | Stirring device for soil body improvement test in construction of soil pressure balance shield |
| CN102445395A (en) * | 2011-10-10 | 2012-05-09 | 沈阳重型机械集团有限责任公司 | Residue soil improvement experimental device for shield method tunnel construction |
| CN203405393U (en) * | 2013-07-15 | 2014-01-22 | 中国地质大学（北京） | Rheological property measurement device for improved sandy gravel soil body in earth pressure balance shield process |
| CN205844133U (en) * | 2016-07-25 | 2016-12-28 | 中交隧道工程局有限公司南京分公司 | A kind of assay device measuring shield sediment improvement mixture creeping |
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