CN102445395A - Residue soil improvement experimental device for shield method tunnel construction - Google Patents
Residue soil improvement experimental device for shield method tunnel construction Download PDFInfo
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- CN102445395A CN102445395A CN2011103042214A CN201110304221A CN102445395A CN 102445395 A CN102445395 A CN 102445395A CN 2011103042214 A CN2011103042214 A CN 2011103042214A CN 201110304221 A CN201110304221 A CN 201110304221A CN 102445395 A CN102445395 A CN 102445395A
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Abstract
The invention discloses a residue soil improvement experimental device for shield method tunnel construction, belonging to the technical field of shield method tunnel construction. The experimental device comprises a steel cylinder, stirring blades, a stirring shaft, a motor, a speed reducer, a torque meter, a test block fixing device, a test block and the like, and is partitioned into a test cylinder and a stirring device, wherein four improvement solution injection ports are formed; the stirring blades are uniformly distributed on the wall of the steel cylinder; four stirring blades are crossly connected to the stirring shaft; the tail end of one of the stirring blades is provided with a tool material test block fixing device; the test block is fixed at the tail end of the stirring blade of the test block fixing device; the left lower parts of a connector pipe and a connector pipe valve are connected with the steel cylinder; and the right lower part of a drain pipe valve is connected with the steel cylinder. In the device, the flow plasticity and shearing resistance of residue soil are quantitatively described by measuring the rotary torques of the stirring blades, the permeability coefficient of residue soil is measured by performing a permeation experiment, and the abrasiveness of residue soil on a tool is detected by measuring the abrasion loss of a tool material.
Description
Technical field
The present invention relates to study in the shield tunnel technical field of construction experimental provision of dregs modification method in the shield construction.
Background technology
At present, in the shield construction process, the physico-mechanical properties that excavates the soil body is depended in the practical implementation of dregs improvement, and the different soil bodys needs different modification methods.The final effect of improvement is; Reduce the shearing strength of the soil body; Make the composite soil physical efficiency in the pressure chamber reach desirable " stream mecystasis "; To reduce cutterhead moment of torsion and main propelling power, avoid dregs that " obturation ", " knot cake " phenomenon take place in pressure chamber, prevent to take place in engineering accidents such as worm conveyor outlet generation " gushing " and quick wearing and tearing of cutter and excavation face unstabilitys.The modification method of dregs relates to the selection of modifying agent and the proportioning of modifying agent.But in actual shield tunnel construction, the modification method of dregs all is by virtue of experience to come to confirm.For general easy excavation stratum, this method can satisfy construction requirement, but grain content is low, infiltration coefficient is big and the clay stratum of the stratum of rich water and glutinous grain too high levels for sticking, and only formulates modification method by rule of thumb and has tangible limitation.If the modification method of dregs and geologic condition are incompatible, improved effect can not get guaranteeing that perhaps the improved effect of dregs can not reach optimum condition; Certainly will cause the boring parameter of equipment excessive; Power is too high, not only causes construction cost high, also can bring a series of engineering problem.
In order to study the dregs modification method of various soil layers, existing experimental technique is in soil, to add improved solutions to stir into dregs, uses the flowability of the slump test test dregs in the concrete field then; Shearing strength through indoor geotechnological shear test test dregs; Infiltration coefficient through laboratory seepage test dregs.These tests must separate to be carried out on special test unit, and each process of the test is complicated, and test period is long, does not satisfy a large amount of test demands of carrying out the research of dregs modification method.Shield tunnel construction dregs improvement experimental provision can carry out indoor detection by quantitative to the improved effect of various dregs modification methods, thus the corresponding best dregs modification method of research different soil.Therefore developing a kind of shield tunnel construction dregs improvement experimental provision is the new problem of being badly in need of solution.
Summary of the invention
The purpose of this invention is to provide a kind of shield tunnel construction dregs improvement experimental provision; Can carry out multiple dregs modification method test; And make things convenient for the experimental provision of detection by quantitative dregs improved effect; Thereby the corresponding best dregs modification method of research different soil, the detection content of dregs comprises three aspects: (1) is through the stream plasticity and the shearing strength of the rotary torque quantitative description dregs of measurement stirring vane; (2) infiltration coefficient through infiltration experiment measuring dregs; (3) detect the abrasiveness of dregs through the wear extent of measuring cutter material to cutter.
The objective of the invention is to realize like this: a kind of shield tunnel construction dregs improvement experimental provision; Form by steel cylinder, spray mouth, flowmeter, connection organ pipe, run-down pipe, drainpipe, stirring vane, shaft, motor, reductor, torque gauge, test block stationary installation, test block, linker tube valve, drainpipe valve, measuring cup; These device separating tests tube and stirring apparatus two parts; The test tube is made up of steel cylinder, spray mouth, flowmeter, connection organ pipe, run-down pipe and drainpipe; Improved solutions spray mouth has 4, is evenly distributed on the steel cylinder wall in the stirring vane position; Stirring apparatus is made up of stirring vane, shaft, motor, reductor and torque gauge; Stirring vane is right-angled intersection by four stirring vanes and is connected on the shaft; The angle of each stirring vane and shaft is 15 °; One of them stirring vane end is provided with cutter material test block stationary installation, and at the terminal fixing test piece of the stirring vane of test block stationary installation, the lower left quarter that is communicated with organ pipe, linker tube valve is connected with steel cylinder; The right lower quadrant of drainpipe valve is connected with steel cylinder, and measuring cup is placed in the bottom of drainpipe valve; The principle of work of said device is; When stirring vane rotates, can be according to test needs spray improved solutions in steel cylinder, the moment of torsion the during rotation of torque gauge test stirring vane; According to the flowability and the shearing strength of the size measurement dregs of moment of torsion, thereby confirm the preferred plan of dregs improvement; Can carry out variable head permeability test and constant head permeability test through being communicated with organ pipe, run-down pipe and drainpipe, thereby measure the infiltration coefficient of improvement back dregs; One of them stirring vane end is provided with cutter material test block stationary installation, installation and removal test block easily; Rotate through stirring vane; The cutter material test block weares and teares in dregs; Stirring vane rotates the regular hour with certain speed in dregs after, measure the quality after test block weares and teares, come the abrasiveness of quantitative description dregs with the difference of the quality before and after the test block wearing and tearing to cutter material.
Main points of the present invention are its structure and principle of work.Its principle of work is; When stirring vane rotates, can be according to test needs spray improved solutions in steel cylinder, the moment of torsion the during rotation of torque gauge test stirring vane; According to the flowability and the shearing strength of the size measurement dregs of moment of torsion, thereby confirm the preferred plan of dregs improvement; Can carry out variable head permeability test and constant head permeability test through being communicated with organ pipe, run-down pipe and drainpipe, thereby measure the infiltration coefficient of improvement back dregs; One of them stirring vane end is provided with cutter material test block stationary installation, installation and removal test block easily; Rotate through stirring vane; The cutter material test block weares and teares in dregs; Stirring vane rotates the regular hour with certain speed in dregs after, measure the quality after test block weares and teares, come the abrasiveness of quantitative description dregs with the difference of the quality before and after the test block wearing and tearing to cutter material.
Shield tunnel construction dregs improvement experimental provision compared with prior art; Have and to carry out multiple dregs modification method test; And make things convenient for the experimental provision of detection by quantitative dregs improved effect; Thereby research different soil corresponding best dregs modification method, the stream plasticity and the shearing strength of the rotary torque quantitative description dregs through measuring stirring vane are through the infiltration coefficient of infiltration experiment measuring dregs; Detect the abrasiveness of dregs through the wear extent of measuring cutter material to cutter; Three detect test all can be in the test tube convenient the completion, and its test process excavates with cutter head of shield machine and the dregs course of conveying has very high similarity, its test result improves the dregs of shield construction has higher reference value; Can also predict for cutter material development and cutter life and to be widely used in advantages such as important parameters is provided in the shield tunnel technical field of construction.
Description of drawings
Below in conjunction with accompanying drawing and embodiment the present invention is elaborated.
Fig. 1 is a structural representation of the present invention.
Fig. 2 is the A-A cut-open view of Fig. 1.
Fig. 3 is B-B cut-open view of Fig. 1.
Fig. 4 is the vertical view of stirring vane part among Fig. 1.
Embodiment
With reference to accompanying drawing; A kind of shield tunnel construction dregs improvement experimental provision; Form by steel cylinder 1, spray mouth 2, flowmeter 3, connection organ pipe 4, run-down pipe 5, drainpipe 6, stirring vane 7, shaft 8, motor 9, reductor 10, torque gauge 11, test block stationary installation 12, test block 13, linker tube valve 14, drainpipe valve 15, measuring cup 16; These device separating tests tube and stirring apparatus two parts; The test tube is made up of steel cylinder 1, spray mouth 2, flowmeter 3, connection organ pipe 4, run-down pipe 5 and drainpipe 6, and improved solutions spray mouth 2 has 4, is evenly distributed on steel cylinder 1 wall in the stirring vane position; Stirring apparatus is made up of stirring vane 7, shaft 8, motor 9, reductor 10 and torque gauge 11; Stirring vane 7 is right-angled intersection by four stirring vanes and is connected on the shaft 8; Each stirring vane 7 is 15 ° with the angle of shaft 8; One of them stirring vane 7 end is provided with cutter material test block stationary installation 12, and at the stirring vane 7 terminal fixing test pieces 13 of test block stationary installation 12, the lower left quarter that is communicated with organ pipe 4, linker tube valve 14 is connected with steel cylinder 1; The right lower quadrant of drainpipe valve 15 is connected with steel cylinder 1, and measuring cup 16 is placed in the bottom of drainpipe valve 15; The principle of work of said device is; When stirring vane 7 rotations; Can be according to test needs spray improved solutions in steel cylinder 1; Moment of torsion during 7 rotations of torque gauge 11 test stirring vanes according to the flowability and the shearing strength of the size measurement dregs of moment of torsion, thereby is confirmed the preferred plan of dregs improvement; Can carry out variable head permeability test and constant head permeability test through being communicated with organ pipe 4, run-down pipe 5 and drainpipe 6, thereby measure the infiltration coefficient of improvement back dregs; One of them stirring vane 7 end is provided with cutter material test block stationary installation 12, and the installation and removal test block 13 easily; Through stirring vane 7 rotations; The cutter material test block weares and teares in dregs; Stirring vane 7 rotates the regular hour with certain speed in dregs after, measure the quality after test block weares and teares, come the abrasiveness of quantitative description dregs with the difference of the quality before and after the test block wearing and tearing to cutter material.
Below in conjunction with embodiment the present invention is made further specific descriptions: (1) is fixed on the test block stationary installation 12 on the stirring vane 7 with day quality m1 of chessboard weighing test block 13 then; (2) soil sample is filled in the steel cylinder 1, linker tube valve 14 is in closure state with drainpipe valve 15; (3) select spray mouth 2 quantity in steel cylinder 1, to inject the good improved solutions of allotment as required; After injecting 5s, starter motor 9 rotates stirring through reductor 10 control stirring vanes 7 with the speed of 10rpm in soil sample; In the process that stirs; Flowmeter 3 reading Q and the torque tester 11 reading M of record spray mouth 2, when treating that obvious solution appears in the soil sample surface, disable motor 9 stops stirring; (4) after adding water above the steel cylinder, carry out dregs constant head permeability test and variable head permeability test as required.Use run-down pipe 5 and drainpipe 6 to carry out constant head permeability test; Use connection organ pipe 4 to carry out variable head permeability test.Concrete testing procedure is according to the relevant regulations in " Standard for test methods of earthworks (GBT50123-1999) "; (5) dregs in the removing steel cylinder 1 takes out test block 12, and the quality m2 with after its wearing and tearing of day chessboard weighing comes the abrasiveness of quantitative description dregs to cutter material with m1-m2; (6) analytical test data, thus test draws the best modification method of soil sample.
Claims (2)
1. a shield tunnel construction dregs is improved experimental provision; Form by steel cylinder, spray mouth, flowmeter, connection organ pipe, run-down pipe, drainpipe, stirring vane, shaft, motor, reductor, torque gauge, test block stationary installation, test block, linker tube valve, drainpipe valve, measuring cup; It is characterized in that: this device separating tests tube and stirring apparatus two parts; The test tube is made up of steel cylinder, spray mouth, flowmeter, connection organ pipe, run-down pipe and drainpipe; Improved solutions spray mouth has 4, is evenly distributed on the steel cylinder wall in the stirring vane position; Stirring apparatus is made up of stirring vane, shaft, motor, reductor and torque gauge; Stirring vane is right-angled intersection by four stirring vanes and is connected on the shaft; The angle of each stirring vane and shaft is 15 °; One of them stirring vane end is provided with cutter material test block stationary installation, and at the terminal fixing test piece of the stirring vane of test block stationary installation, the lower left quarter that is communicated with organ pipe, linker tube valve is connected with steel cylinder; The right lower quadrant of drainpipe valve is connected with steel cylinder, and measuring cup is placed in the bottom of drainpipe valve.
2. the experiment loading unit of shield machine under the high hydraulic pressure according to claim 1; It is characterized in that: the principle of work of said device is; When stirring vane rotates, can be according to test needs spray improved solutions in steel cylinder, the moment of torsion the during rotation of torque gauge test stirring vane; According to the flowability and the shearing strength of the size measurement dregs of moment of torsion, thereby confirm the preferred plan of dregs improvement; Can carry out variable head permeability test and constant head permeability test through being communicated with organ pipe, run-down pipe and drainpipe, thereby measure the infiltration coefficient of improvement back dregs; One of them stirring vane end is provided with cutter material test block stationary installation, installation and removal test block easily; Rotate through stirring vane; The cutter material test block weares and teares in dregs; Stirring vane rotates the regular hour with certain speed in dregs after, measure the quality after test block weares and teares, come the abrasiveness of quantitative description dregs with the difference of the quality before and after the test block wearing and tearing to cutter material.
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| CN 201110304221 CN102445395B (en) | 2011-10-10 | 2011-10-10 | Residue soil improvement experimental device for shield method tunnel construction |
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| CN 201110304221 CN102445395B (en) | 2011-10-10 | 2011-10-10 | Residue soil improvement experimental device for shield method tunnel construction |
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| CN102445395A true CN102445395A (en) | 2012-05-09 |
| CN102445395B CN102445395B (en) | 2013-04-17 |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103785318A (en) * | 2014-01-16 | 2014-05-14 | 同济大学 | Stirring apparatus for improving muck |
| CN105823691A (en) * | 2016-03-21 | 2016-08-03 | 中南大学 | Undrained shear strength indoor combined measuring instrument and application method thereof |
| CN105863655A (en) * | 2016-04-01 | 2016-08-17 | 石家庄铁道大学 | Active soil stirring system of large tunnel boring machine |
| CN106124364A (en) * | 2016-07-25 | 2016-11-16 | 中交隧道工程局有限公司南京分公司 | A kind of test method measuring shield sediment improvement mixture creeping and device |
| CN108318350A (en) * | 2017-10-20 | 2018-07-24 | 同济大学 | A kind of shield soil storehouse fluid slag soil nature shape intelligence assessment method and device |
| CN108645738A (en) * | 2018-06-08 | 2018-10-12 | 北京交通大学 | The method of calibration experiment of sand abrasion experimental apparatus for testing and the sand coefficient of waste |
| CN108731956A (en) * | 2017-04-25 | 2018-11-02 | 同济大学 | A kind of earth pressure balanced shield, EPBS sediment improvement simulation test device and test method |
| CN109115656A (en) * | 2018-07-21 | 2019-01-01 | 中铁十八局集团有限公司 | A kind of device and method of automatic measurement consistency of mortar |
| CN109443969A (en) * | 2018-10-25 | 2019-03-08 | 西南交通大学 | One kind being used for shield cutter cutter wear characteristic test and experiment device and method |
| CN109946187A (en) * | 2019-04-24 | 2019-06-28 | 西南石油大学 | A kind of shield cutter abrasion experiment device and application method for hard soil layer |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103785318B (en) * | 2014-01-16 | 2015-12-30 | 同济大学 | A kind of sediment improvement agitating device |
| CN103785318A (en) * | 2014-01-16 | 2014-05-14 | 同济大学 | Stirring apparatus for improving muck |
| CN105823691A (en) * | 2016-03-21 | 2016-08-03 | 中南大学 | Undrained shear strength indoor combined measuring instrument and application method thereof |
| CN105823691B (en) * | 2016-03-21 | 2018-06-29 | 中南大学 | Simultaneous determination instrument and its application method in a kind of undrained shear strength room |
| CN105863655A (en) * | 2016-04-01 | 2016-08-17 | 石家庄铁道大学 | Active soil stirring system of large tunnel boring machine |
| CN106124364A (en) * | 2016-07-25 | 2016-11-16 | 中交隧道工程局有限公司南京分公司 | A kind of test method measuring shield sediment improvement mixture creeping and device |
| CN106124364B (en) * | 2016-07-25 | 2019-02-19 | 中交隧道工程局有限公司南京分公司 | A kind of test method and device measuring shield sediment improvement mixture creeping |
| CN108731956A (en) * | 2017-04-25 | 2018-11-02 | 同济大学 | A kind of earth pressure balanced shield, EPBS sediment improvement simulation test device and test method |
| CN108318350A (en) * | 2017-10-20 | 2018-07-24 | 同济大学 | A kind of shield soil storehouse fluid slag soil nature shape intelligence assessment method and device |
| CN108318350B (en) * | 2017-10-20 | 2024-02-02 | 同济大学 | Intelligent evaluation method and device for flowing slag soil characteristics of shield soil bin |
| CN108645738A (en) * | 2018-06-08 | 2018-10-12 | 北京交通大学 | The method of calibration experiment of sand abrasion experimental apparatus for testing and the sand coefficient of waste |
| CN109115656A (en) * | 2018-07-21 | 2019-01-01 | 中铁十八局集团有限公司 | A kind of device and method of automatic measurement consistency of mortar |
| CN109443969A (en) * | 2018-10-25 | 2019-03-08 | 西南交通大学 | One kind being used for shield cutter cutter wear characteristic test and experiment device and method |
| CN109443969B (en) * | 2018-10-25 | 2023-09-22 | 西南交通大学 | Device and method for testing abrasion characteristics of cutter of shield cutter head |
| CN109946187A (en) * | 2019-04-24 | 2019-06-28 | 西南石油大学 | A kind of shield cutter abrasion experiment device and application method for hard soil layer |
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