CN104931414A - Testing device for analyzing stress of slurry balance shield tunnel pipe piece in swelling soil area - Google Patents
Testing device for analyzing stress of slurry balance shield tunnel pipe piece in swelling soil area Download PDFInfo
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- CN104931414A CN104931414A CN201510340794.0A CN201510340794A CN104931414A CN 104931414 A CN104931414 A CN 104931414A CN 201510340794 A CN201510340794 A CN 201510340794A CN 104931414 A CN104931414 A CN 104931414A
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Abstract
The invention discloses a testing device for analyzing the stress of a slurry balance shield tunnel pipe piece in a swelling soil area. The testing device is characterized by comprising a main frame, a measurement system and a water adding system, the main frame comprises a model casing, a movable plate, a hydraulic jack and testing pipe pieces, the measurement system comprises a soil pressure gauge, a pore water pressure gauge, a strain gauge and a data acquisition instrument, and the water adding system comprises a peristaltic pump, a hose and capillary tubes. The hydraulic jack exerts an axial load on testing swelling soil, and the water adding system evenly delivers water to the testing pipe pieces and a testing swelling soil contact belt at a stable speed through the capillary tubes. The data acquisition instrument is used for acquiring and recording the data of soil pressure of all measurement points of the swelling soil, pore water pressure and pipe piece deformation. By the adoption of the testing device, the swelling force borne by the slurry balance shield tunnel pipe piece and the swelling range of the swelling soil can be accurately measured, the defects of existing methods are overcome, and swelling performance parameters of slurry balance shield tunnel swelling soil can be provided for the relevant fields such as the engineering geology field and the tunnel engineering field.
Description
Technical field
The invention belongs to Geological Engineering, Tunnel Engineering technical field, especially relate to a kind of swelled ground area slurry balance shield tunnel duct piece force analysis test unit.
Background technology
Within 1938, united states bureau of reclamation is in the U trap engineering of a steel, has first found swelled ground problem, has attracted wide attention subsequently.To the sixties in last century, swelled ground problem is in widespread attention and correlative study develops rapidly.Particularly relate to slurry balance shield tunnel, after section of jurisdiction is installed, residual slurry and underground water continue to tunnel perimeter soil body penetration, expand distortion after swelled ground water suction, under section of jurisdiction and surrounding soil constraint, produce bulging force.Research in the past mostly adopts field monitoring means, but, because site environment is comparatively complicated and disturbing factor is more, the authentic and valid bulging force suffered by analysis section of jurisdiction and swelled ground range of expansion often cannot be obtained.In sum, there is no at present and aly can test the stressed test unit of swelled ground area slurry balance shield tunnel duct piece.
Summary of the invention
A kind of swelled ground area slurry balance shield tunnel duct piece force analysis test unit provided to overcome above-mentioned technological deficiency is provided.
Object of the present invention can be achieved through the following technical solutions:
A kind of swelled ground area slurry balance shield tunnel duct piece force analysis test unit, it is characterized in that, this device comprises main body frame, measuring system and water-adding system.
Described main body frame comprises model casing, portable plate, hydraulic jack and test section of jurisdiction.Described model casing general frame adopts angle steel to support, and positive facade adopts fixing tempered glass, and side elevation adopts fixation steel plate, and bottom surface, top adopts detachable steel plate; Described side elevation steel plate is provided with round hole and passes through for testing section of jurisdiction; Described portable plate comprises upper and lower two pieces, is positioned at model casing, can vertically move, and is test swelled ground in the middle of two pieces of portable plates; Described hydraulic jack comprises two, to lay respectively at above upper mobile board and below lower portable plate, for applying vertical load to test swelled ground; Described test section of jurisdiction adopts analog material to make, with side elevation round hole compact siro spinning technology.
Described measuring system comprises some earth pressure gauges, some pore pressure gauges, some foil gauges and data collecting instrument.Described earth pressure gauge and pore pressure gauge are laid in portable plate inside surface and test section of jurisdiction periphery respectively; Described earth pressure gauge is for measuring test section of jurisdiction periphery test swelled ground stress distribution; Described pore pressure gauge is for measuring the distribution of test section of jurisdiction periphery test swelled ground pore water pressure; Described strain gauge adhesion test inside and outside both sides, section of jurisdiction, for measuring segment deformation; Described data collecting instrument is used for gathering and recording earth pressure gauge, pore pressure gauge and foil gauge measurement data.
Described water-adding system comprises peristaltic pump, flexible pipe and kapillary.Described peristaltic pump can accurately control water delivery speed; Water is evenly imported test section of jurisdiction and test swelled ground contact zones from test section of jurisdiction point multiple directions by described kapillary.
Use of the present invention: first model casing top board, upper hydraulic jack and upper mobile board are removed, foil gauge is also pasted in installation test section of jurisdiction, fill out in model casing and put test swelled ground reality is hit in layering, bury underground simultaneously and measure required earth pressure gauge and pore pressure gauge, fill out to put when test swelled ground and place upper mobile board, upper hydraulic jack and model casing top board above it respectively to during preset height, apply xial feed by upper and lower hydraulic jack to test swelled ground.Setting peristaltic pump water delivery speed, water evenly enters test section of jurisdiction and test swelled ground contact zones by flexible pipe, kapillary successively.Utilize data collecting instrument collection and each measurement point soil pressure of record test swelled ground, pore water pressure and segment deformation data.
The beneficial effect of technical solution of the present invention:
The present invention accurately can measure bulging force suffered by slurry balance shield tunnel duct piece and swelled ground range of expansion, make up existing method not enough, slurry balance shield tunnel swelled ground expansion character parameter can be provided for the association area such as engineering geology, Tunnel Engineering.
Accompanying drawing explanation
Fig. 1 is the positive facade structural representation of device of the present invention;
Fig. 2 is device side elevation structural representation of the present invention;
In Fig. 1,1 is model casing, and 2 is test swelled ground, and 3 is test section of jurisdiction, and 4 is portable plate, 5 is hydraulic jack, and 6 is hydraulic pump, and 7 is peristaltic pump, and 8 is flexible pipe, and 9 is kapillary, 10 is earth pressure gauge, and 11 is pore pressure gauge, and 12 is foil gauge, and 13 is data collecting instrument.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment
In specific embodiment, as shown in Figure 1, this device comprises model casing 1, test swelled ground 2, test section of jurisdiction 3, portable plate 4, hydraulic jack 5, hydraulic pump 6, peristaltic pump 7, flexible pipe 8, kapillary 9, earth pressure gauge 10, pore pressure gauge 11, foil gauge 12, data collecting instrument 13.
Model casing 1 side elevation is provided with round hole and passes through for testing section of jurisdiction 3.Portable plate 4 comprises upper and lower two pieces, is positioned at model casing 1, can vertically move, and is test swelled ground 2 in the middle of two pieces of portable plates 4.Hydraulic jack 5 comprises two, to lay respectively at above upper mobile board 4 and below lower portable plate 4, for applying vertical load to test swelled ground 2.
Earth pressure gauge 10 and pore water pressure 11 are scored and are not laid in portable plate 4 inside surface and test section of jurisdiction 3 periphery, for measuring test swelled ground 2 stress and pore water pressure distribution, foil gauge 12 is pasted onto test inside and outside both sides, section of jurisdiction 3, be out of shape for measuring test section of jurisdiction 3, data collecting instrument 13 is for gathering and recording measurement data.
As shown in Figure 2, water is evenly imported test section of jurisdiction 3 and test swelled ground 2 contact zones by kapillary 9 from test direction, 3 eight, section of jurisdiction.
When device uses, first model casing 1 top board, upper hydraulic jack 5 and upper mobile board 4 are removed, foil gauge 12 is also pasted in installation test section of jurisdiction 3, fill out in model casing 1 put test swelled ground 2 and layering hit reality, bury underground simultaneously and measure required earth pressure gauge 10 and pore pressure gauge 11, fill out to put when test swelled ground 2 and place upper mobile board 4, upper hydraulic jack 5 and model casing 1 top board respectively above it to during preset height, apply xial feed by upper and lower hydraulic jack 5 to test swelled ground 2.Setting peristaltic pump 7 water delivery speed, water evenly enters test section of jurisdiction 3 and test swelled ground 2 contact zones by flexible pipe 8, kapillary 9 successively.Utilize data collecting instrument 13 to gather and record each measurement point soil pressure of test swelled ground, pore water pressure and segment deformation data.
Claims (1)
1. a swelled ground area slurry balance shield tunnel duct piece force analysis test unit, is characterized in that, this device comprises main body frame, measuring system and water-adding system;
Described main body frame comprises model casing, portable plate, hydraulic jack and test section of jurisdiction.Described model casing general frame adopts angle steel to support, and positive facade adopts fixing tempered glass, and side elevation adopts fixation steel plate, and bottom surface, top adopts detachable steel plate; Described side elevation steel plate is provided with round hole and passes through for testing section of jurisdiction; Described portable plate comprises upper and lower two pieces, is positioned at model casing, can vertically move, and is test swelled ground in the middle of two pieces of portable plates; Described hydraulic jack comprises two, to lay respectively at above upper mobile board and below lower portable plate, for applying vertical load to test swelled ground; Described test section of jurisdiction adopts analog material to make, with side elevation round hole compact siro spinning technology;
Described measuring system comprises some earth pressure gauges, some pore pressure gauges, some foil gauges and data collecting instrument; Described earth pressure gauge and pore pressure gauge are laid in portable plate inside surface and test section of jurisdiction periphery respectively; Described earth pressure gauge is for measuring test section of jurisdiction periphery test swelled ground stress distribution; Described pore pressure gauge is for measuring the distribution of test section of jurisdiction periphery test swelled ground pore water pressure; Described strain gauge adhesion test inside and outside both sides, section of jurisdiction, for measuring segment deformation; Described data collecting instrument is used for gathering and recording earth pressure gauge, pore pressure gauge and foil gauge measurement data;
Described water-adding system comprises peristaltic pump, flexible pipe and kapillary.Described peristaltic pump can accurately control water delivery speed; Water is evenly imported test section of jurisdiction and test swelled ground contact zones from test section of jurisdiction point multiple directions by described kapillary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510340794.0A CN104931414B (en) | 2015-06-18 | 2015-06-18 | A kind of swelled ground area slurry balance shield tunnel duct piece force analysis experimental rig |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510340794.0A CN104931414B (en) | 2015-06-18 | 2015-06-18 | A kind of swelled ground area slurry balance shield tunnel duct piece force analysis experimental rig |
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| CN104931414A true CN104931414A (en) | 2015-09-23 |
| CN104931414B CN104931414B (en) | 2017-07-28 |
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| CN201510340794.0A Expired - Fee Related CN104931414B (en) | 2015-06-18 | 2015-06-18 | A kind of swelled ground area slurry balance shield tunnel duct piece force analysis experimental rig |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105242010A (en) * | 2015-09-28 | 2016-01-13 | 山东大学 | Device and method for testing swelling-shrinkage soil tunnel model under effect of dry-wet circles |
| CN105510219A (en) * | 2015-11-30 | 2016-04-20 | 中国矿业大学 | Circulation model testing method capable of flexibly controlling base plate elevation and distance |
| CN105891105A (en) * | 2016-06-15 | 2016-08-24 | 南京大学 | Multi-boundary-condition dilatometer and soil expansion test method |
| CN108181072A (en) * | 2018-03-09 | 2018-06-19 | 西南交通大学 | System is tested for the dynamic response of tunnel structure and country rock in rich water sandy soil stratum |
| CN108872297A (en) * | 2018-08-27 | 2018-11-23 | 郑州大学 | A kind of condensation of grouting at the tail of the shield machine slurries and duct piece float upward process model experimental rig |
| CN112414461A (en) * | 2020-11-11 | 2021-02-26 | 长沙理工大学 | Measurement system for dynamic mechanical response of intelligent acquisition concrete surface layer |
| CN114486671A (en) * | 2021-12-16 | 2022-05-13 | 广东省交通规划设计研究院集团股份有限公司 | Intelligent conveying embolism pressurized-water test device for cross-ridge tunnel ultra-deep drilling |
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| CN102221601A (en) * | 2011-06-08 | 2011-10-19 | 上海大学 | Temperature-controlled type unsaturated soil consolidometer |
| CN102519790A (en) * | 2011-12-07 | 2012-06-27 | 上海大学 | Method for determining support pressure on excavation face of slurry shield tunnel |
| CN104390845A (en) * | 2014-11-26 | 2015-03-04 | 同济大学 | Portable multifunctional soil mechanical property test device |
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2015
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| CN102221601A (en) * | 2011-06-08 | 2011-10-19 | 上海大学 | Temperature-controlled type unsaturated soil consolidometer |
| CN102519790A (en) * | 2011-12-07 | 2012-06-27 | 上海大学 | Method for determining support pressure on excavation face of slurry shield tunnel |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105242010A (en) * | 2015-09-28 | 2016-01-13 | 山东大学 | Device and method for testing swelling-shrinkage soil tunnel model under effect of dry-wet circles |
| CN105510219A (en) * | 2015-11-30 | 2016-04-20 | 中国矿业大学 | Circulation model testing method capable of flexibly controlling base plate elevation and distance |
| CN105891105A (en) * | 2016-06-15 | 2016-08-24 | 南京大学 | Multi-boundary-condition dilatometer and soil expansion test method |
| CN105891105B (en) * | 2016-06-15 | 2018-09-14 | 南京大学 | A kind of multi-boundary Condition dilatometer and soil expansion test method |
| CN108181072A (en) * | 2018-03-09 | 2018-06-19 | 西南交通大学 | System is tested for the dynamic response of tunnel structure and country rock in rich water sandy soil stratum |
| CN108872297A (en) * | 2018-08-27 | 2018-11-23 | 郑州大学 | A kind of condensation of grouting at the tail of the shield machine slurries and duct piece float upward process model experimental rig |
| CN108872297B (en) * | 2018-08-27 | 2023-12-05 | 中铁十五局集团有限公司 | Shield tail grouting slurry coagulation and segment floating process model test device |
| CN112414461A (en) * | 2020-11-11 | 2021-02-26 | 长沙理工大学 | Measurement system for dynamic mechanical response of intelligent acquisition concrete surface layer |
| CN114486671A (en) * | 2021-12-16 | 2022-05-13 | 广东省交通规划设计研究院集团股份有限公司 | Intelligent conveying embolism pressurized-water test device for cross-ridge tunnel ultra-deep drilling |
| CN114486671B (en) * | 2021-12-16 | 2023-12-22 | 广东省交通规划设计研究院集团股份有限公司 | Intelligent transmission embolism water pressure test device for ultra-deep drilling of cross-over tunnel |
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| Publication number | Publication date |
|---|---|
| CN104931414B (en) | 2017-07-28 |
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