CN105928486A - Test apparatus and method for measuring neighborhood rain sewage pipeline deformation caused by tunnel construction - Google Patents

Test apparatus and method for measuring neighborhood rain sewage pipeline deformation caused by tunnel construction Download PDF

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Publication number
CN105928486A
CN105928486A CN201610282681.4A CN201610282681A CN105928486A CN 105928486 A CN105928486 A CN 105928486A CN 201610282681 A CN201610282681 A CN 201610282681A CN 105928486 A CN105928486 A CN 105928486A
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CN
China
Prior art keywords
stay
displacement sensor
pipeline
fixed
test
Prior art date
Application number
CN201610282681.4A
Other languages
Chinese (zh)
Inventor
姚爱军
胡愈
曹伍富
周君
周一君
Original Assignee
北京工业大学
中铁建设集团有限公司
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Application filed by 北京工业大学, 中铁建设集团有限公司 filed Critical 北京工业大学
Priority to CN201610282681.4A priority Critical patent/CN105928486A/en
Publication of CN105928486A publication Critical patent/CN105928486A/en

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01BMEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B21/00Measuring arrangements or details thereof in so far as they are not adapted to particular types of measuring means of the preceding groups
    • G01B21/32Measuring arrangements or details thereof in so far as they are not adapted to particular types of measuring means of the preceding groups for measuring the deformation in a solid
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00

Abstract

The invention discloses a test apparatus and method for measuring neighborhood rain sewage pipeline deformation caused by tunnel construction and belongs to the technical field of underground engineering. A model box is fixed on the ground, and a reference beam is fixed at the top of the model box; the model box is internally provided with a model stratum material, two holes are drilled at each section of a top plate of a model pipeline and are corresponding to one stay-supported displacement sensor, the stay-supported displacement sensors are fixed on the reference beam, and stray wires are connected through bamboo splints and are fixed at the lower end of the top plate of the model pipe; the stay wires are externally sleeved by one sleeve; and a stay-supported displacement sensor data line is led out from the stay-supported displacement sensors and is connected with a port of a stay-supported displacement sensor acquisition instrument. Two sinks in the model pipeline are measured through the stay-supported displacement sensors; and accordingly, corner deformation after subsidence is solved. According to the invention, a simulation test of neighborhood rain sewage pipeline deformation caused by shield construction can be realized, the precision of test data is high, and the test result is accurate and reliable.

Description

A kind of measure assay device and the method that constructing tunnel causes neighborhood rain dirt pipeline to deform
Technical field
The invention belongs to underground engineering technical field, be mainly used in verifying that shield-tunneling construction is to neighborhood gut line deformation rule shadow The feasibility test research rung.
Background technology
The impact that neighborhood gut line is deformed by present stage about constructing metro tunnel is primarily present in theoretical research and test Conceptual phase, wherein the theoretical research of pipeline deformation is concentrated mainly on the rule being deduced pipeline deformation by surface deformation law Rule;Experimental study is then concentrated mainly on model shielding machine and test soil case, fills out similarly layer material in test soil case, logical Cross model shielding machine simulation shield-tunneling construction process, measure the aspect such as change of tunnel neighborhood gut line displacement.And measure pipeline and become The many employings of test method of shape arrange sedimentation mark in the soil body, are bound with body by sedimentation mark, lay displacement meter in the above Monitoring body situation of change during tunnel excavation.Although the deformation of body can be observed, but displacement meter is extruded by the soil body (soil deformation is delayed) is likely to occur the phenomenon that test is inaccurate, and therefore test result has some defects the most unavoidably.So, at mesh In the model investigation of front shield or boring construction engineering, measure pipeline deformation and still suffer from some problems and key technology, it may be assumed that
(1) observability of rain dirt pipeline displacement deformation, structure the most on the ground are closed on after how improving shield tunneling Build the model casing and test device being easy to observe interior change.
(2) testing for three-dimensional simulation, how the displacement of Accurate Determining rain dirt pipeline model, i.e. tests the sensitive of device Property.
Summary of the invention
Technical scheme and key technology are to test central rain dirt pipeline displacement measuring device and method.
A kind of measure the assay device that constructing tunnel causes neighborhood rain dirt pipeline to deform, it is characterised in that:
Model casing (1) is fixed on ground (2), and datum line beam (7) is screwed at model casing (1) top;Model casing (1) Interior placement model earth formation material (3), often saves the corresponding stay-supported type displacement sensor of drill two holes at model pipeline (5) top board (6), stay-supported type displacement sensor (6) is fixed on datum line beam (7), bracing wire (9) is connected by bamboo chip (11) and is fixed on model Pipeline (5) top board lower end;One layer of sleeve pipe (10) of bracing wire (9) overcoat;Draw stay-supported displacement from stay-supported type displacement sensor (6) to pass Sensor data wire (12), is connected with the port (14) of stay-supported type displacement sensor Acquisition Instrument (13).
Described device is applied to measure the method that constructing tunnel causes neighborhood rain dirt pipeline to deform, it is characterised in that: mould 2 sedimentations on type pipeline (5) are recorded by stay-supported type displacement sensor (6);After tube coupling settles, monitoring point A and B divides It is not deposited to A' and B', if A point is settled into hA, B point is settled into hB, A point and B point distance are L, then the corner tangent value of tube coupling can Use expression formulaExpress, negate functionThe corner after tube coupling sedimentation can be tried to achieve Deformation.
More specifically:
First ground (2) upper fixing three-dimensional tempering glass model case (1);Analog material (3) is put in model casing (1) To simulate each rock stratum, model casing (1) open a hole, with simulation driving formed model tunnel (4);In model casing (1) The embedding model pipeline in corresponding stratum (5), and before and after model pipeline (5) top board hole, at model pipeline (5) top plate drilling Stay-supported type displacement sensor (6) bamboo chip (11) is connected with bracing wire (9) and lays;Stay-supported type displacement sensor (6) is fixed On datum line beam (7), bracing wire (9) it is placed in sleeve pipe (10) and strains, being fixed on stay-supported type displacement sensor (6);? First pass through stay-supported type displacement sensor (6) under static action and draw stay-supported type displacement sensor data wire (12), and be placed on ground The port (14) of the stay-supported type displacement sensor Acquisition Instrument (13) on face (2) connects, and measures initial value, then the pick of dividual simulation shield The work progress entered, each construction stage complete just with stay-supported type displacement sensor data wire (12) be placed on ground (2) The port (14) of stay-supported type displacement sensor Acquisition Instrument (13) connect, measure the heavy of model pipeline (5) each tube coupling monitoring point Depreciation, with the sedimentation Changing Pattern of observation model pipeline (5), can also analyze Changing Pattern (each pipe of tube coupling corner simultaneously Save 2 differential settlements and can draw, divided by distance between two points, the tangent value that tube coupling corner changes, negate function and i.e. can get tube coupling rotation Angle), and then can work out because the Distortion Disciplinarian of large-scale rain dirt pipeline in the field that causes of shield-tunneling construction.
Apparatus of the present invention and method are to disclose, by threedimensional model test, the neighborhood inner tube that subway tunnel shield construction causes Line deformation rule, mainly solve techniques below problem:
(1) constructing the threedimensional model case of shield-tunneling construction and neighborhood pipeline, model casing uses transparent toughened glass, it is possible to have Effect simulates the Distortion Disciplinarian of rain dirt pipeline above shield tunnel in observing model casing.
(2) in shield-tunneling construction threedimensional model assay device, establish a set of monitoring device, can will measure pipeline displacement Bracing wire threading, it is to avoid retrained by the soil body and affect certainty of measurement.This monitoring technology can effectively observe rain dirt pipeline displacement, And monitoring accuracy is higher, up to 0.01mm.
Therefore, the simulation test that the neighborhood rain dirt pipeline using this method that shield-tunneling construction can be made to cause deforms is able to reality Now, and examination data test precision height, and result of the test is accurately and reliably.
Owing to the hard-over at major diameter rain dirt pipeline interface is not defined by specification, and this kind of pipeline once connects There is the deformation of bigger corner at Kou, arise that rain effluent seepage phenomenon, serious caused engineering accident, it is therefore necessary to greatly The corner deformation of diameter rain dirt pipeline strictly controls.This test method as target, is accurately measured by test just Go out the sedimentation deformation of each tube coupling, can derive, according to the sedimentation deformation of tube coupling, the angle that tube coupling rotates, and then can study whole The corner deformation rule of individual pipeline, the corner deformation rule for actual rain dirt pipeline provides a set of valuable with reference to mark simultaneously Accurate.
Accompanying drawing explanation
Fig. 1 top view
Fig. 2 A-A profile perspective
Fig. 3 test monitoring point displacement diagram
Detailed description of the invention
One, system composition
1. model casing 2. ground 3. model formation material 4. model tunnel 5. model pipeline 6. stay-supported type displacement sensor 7. Datum line beam 8. supporting plate 9. bracing wire 10. sleeve pipe 11. bamboo chip 12. stay wire displacement sensor data wire 13 stay wire displacement sensor Acquisition Instrument 14 ports
Two, annexation
Model casing (1) is fixed on ground (2), and datum line beam (7) is screwed at model casing (1) top;Model casing (1) Interior placement model earth formation material (3), is placed on relevant position by model pipeline (5).In model pipeline (5) top plate drilling, bracing wire Formula displacement transducer (6) is fixed on datum line beam (7), bracing wire (9) is connected by bamboo chip (11) and is fixed on model pipeline (5) and pushes up Plate lower end;One layer of sleeve pipe (10) of bracing wire (9) overcoat is to guarantee that bracing wire can freely stretch;Draw from stay-supported type displacement sensor (6) Go out stay-supported type displacement sensor data wire (12), with the stay-supported type displacement sensor Acquisition Instrument (13) being placed on ground (2) Port (14) connects.
(1. draw as shown in Figure 1 by model casing 2. ground 3. model formation material 4. model tunnel 5. model pipeline 6. for top view Wire type displacement meter 7. datum line beam 8. supporting plate 13. stay wire displacement sensor Acquisition Instrument 14. port)
A-A profile perspective (1. model casing 2. ground 3. model formation material 4. model tunnel 5. model pipe as shown in Figure 2 Road 6. stay-supported type displacement sensor 7. datum line beam 8. supporting plate 9. bracing wire 10. sleeve pipe 11. bamboo chip 12. stay-supported type displacement sensor data Line 13 stay-supported type displacement sensor Acquisition Instrument 14. port)
1. this method is that a kind of means by arranging datum line beam and bracing wire sensing realize contact and directly measure body The test measuring method of deformation.The method can accurately measure the sedimentation deformation of process of the test middle tube body, settles position according to body Shifting can derive the angle that tube coupling rotates, thus studies the deformation rule of body.Datum line beam (7) is fixed by screws in model casing (1) top, therefore top displacement can keep constant;Stay-supported type displacement sensor (6) is fixed on datum line beam (7), simultaneously with draw Line (9) compact siro spinning technology, and sleeve pipe (10) is passed through in bracing wire (9), realizes being in close contact with body, and the soil body can be avoided bracing wire (9) Interference, and realize body deformation-sensing.Therefore in process of the test, only need to consider that the sedimentation deformation of tube coupling changes.Along with The excavation driving in tunnel, 2 sedimentations in model pipeline (5) can be passed through stay-supported type displacement sensor (6) and record, such as Fig. 3 institute Show.After tube coupling settles, monitoring point A and B is deposited to A' and B' respectively, if A point is settled into hA, B point is settled into hB, A point and B Point distance is L, then the corner tangent value available expression of tube couplingExpress, negate functionThe corner deformation after tube coupling sedimentation can be tried to achieve.Therefore according to pipe during the method may be implemented in test The deformation of tube coupling is studied in body sedimentation deformation and corner change.
2., based on said method, this process of the test needs device to be protected to be a kind of contact measuring apparatus.This device has Body is: datum line beam (7) and supporting plate (8) are securely fixed in the top of model casing (1), stay-supported type displacement sensor by screw (6) it is fixed on datum line beam (7) by thin nut, it can be ensured that all stay-supported type displacement sensors (6) are all in same level On;At model pipeline (5) top plate drilling, sleeve pipe (10) is passed through in bracing wire (9), and wherein one end closely connects through boring with bamboo chip (11) Being connected together, the other end is closely joined together with stay-supported type displacement sensor (6), and bracing wire (9) can be made to be connected with bamboo chip (11) One end be closely attached to the top of model pipeline (5).Along with tunnel excavation driving in process of the test, tube coupling settles, and can will draw The port of wire type displacement transducer data wire (12) and the stay-supported type displacement sensor Acquisition Instrument (13) being placed on ground (2) (14) connect, accurately measure body sedimentation deformation.This device can realize bracing wire sensing in whole process of the test, it is possible to protects all the time Hold the change in displacement the most accurately measuring body.

Claims (2)

1. measure the assay device that constructing tunnel causes neighborhood rain dirt pipeline to deform for one kind, it is characterised in that:
Model casing (1) is fixed on ground (2), and datum line beam (7) is fixed on model casing (1) top;Model is placed in model casing (1) Earth formation material (3), often saves the corresponding stay-supported type displacement sensor (6) of drill two holes, stay-supported position at model pipeline (5) top board Displacement sensor (6) is fixed on datum line beam (7), bracing wire (9) is connected by bamboo chip (11) and is fixed under model pipeline (5) top board End;One layer of sleeve pipe (10) of bracing wire (9) overcoat;Stay-supported type displacement sensor data wire is drawn from stay-supported type displacement sensor (6) (12), it is connected with the port (14) of stay-supported type displacement sensor Acquisition Instrument (13).
2. applying device as claimed in claim 1 to measure the method that constructing tunnel causes neighborhood rain dirt pipeline to deform, it is special Levy and be: 2 sedimentations in model pipeline (5) are recorded by stay-supported type displacement sensor (6);After tube coupling settles, monitoring Point A and B is deposited to A' and B', respectively if A point is settled into hA, B point is settled into hB, A point and B point distance are L, then the corner of tube coupling Tangent value expression formulaExpress, negate functionTry to achieve turning after tube coupling sedimentation Angular deformation.
CN201610282681.4A 2016-05-02 2016-05-02 Test apparatus and method for measuring neighborhood rain sewage pipeline deformation caused by tunnel construction CN105928486A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106931940A (en) * 2017-03-30 2017-07-07 上海理工大学 The simulation laboratory test device of influence and grouting Controlling research of the piping to tunnel

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KR20060072914A (en) * 2004-12-24 2006-06-28 서동현 Shallow overbuden tunnel construction method
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CN103115788A (en) * 2012-11-20 2013-05-22 上海理工大学 Indoor model experience device with existing tunnel affected by double subway construction
CN104634646A (en) * 2015-01-13 2015-05-20 哈尔滨工业大学 Testing method for simulating mechanical behaviors of surrounding underground pipelines in construction of shield tunnel
CN105021418A (en) * 2015-07-22 2015-11-04 河海大学 Shield excavation face model suitable for soil engineeringcentrifugal model test and simulation method

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KR940011420B1 (en) * 1992-05-01 1994-12-15 삼보지질주식회사 Tunnel timbering method
KR20060072914A (en) * 2004-12-24 2006-06-28 서동현 Shallow overbuden tunnel construction method
CN102071943A (en) * 2010-12-13 2011-05-25 上海大学 Centrifugal experimental simulation testing device for surface subsidence induced by city shield tunnel construction
CN103115788A (en) * 2012-11-20 2013-05-22 上海理工大学 Indoor model experience device with existing tunnel affected by double subway construction
CN104634646A (en) * 2015-01-13 2015-05-20 哈尔滨工业大学 Testing method for simulating mechanical behaviors of surrounding underground pipelines in construction of shield tunnel
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106931940A (en) * 2017-03-30 2017-07-07 上海理工大学 The simulation laboratory test device of influence and grouting Controlling research of the piping to tunnel
CN106931940B (en) * 2017-03-30 2019-03-05 上海理工大学 The simulation laboratory test device of influence and be in the milk Controlling research of the piping to tunnel

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Application publication date: 20160907