CN109029308A - Duct pieces of shield tunnel gap joint open prediction technique - Google Patents
Duct pieces of shield tunnel gap joint open prediction technique Download PDFInfo
- Publication number
- CN109029308A CN109029308A CN201810416158.5A CN201810416158A CN109029308A CN 109029308 A CN109029308 A CN 109029308A CN 201810416158 A CN201810416158 A CN 201810416158A CN 109029308 A CN109029308 A CN 109029308A
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- Prior art keywords
- water
- pressure
- water pocket
- jurisdiction
- joint open
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B13/00—Measuring arrangements characterised by the use of fluids
- G01B13/12—Measuring arrangements characterised by the use of fluids for measuring distance or clearance between spaced objects or spaced apertures
Abstract
The present invention relates to a kind of duct pieces of shield tunnel gap joint open prediction techniques, used device includes the water pocket being clipped between the gap of two sections of jurisdiction, water pocket is connected with outer conduit and inner conduit, water pocket is divided into three interconnected middle part water pocket, external water capsule and interior water pocket parts, and middle part water pocket is clipped between two sections of jurisdiction；Include the following steps: to close pressure-control valve, is pumped to the water in the first pond in water pocket by pressure pump；The hydraulic pressure that pressure pump outflow water is measured using pressure gauge, with the increase of water pressure, section of jurisdiction gap joint open is gradually increased, and obtains the relationship between water pressure and gap joint open size；According to the hydraulic pressure at live certain depth, the size of section of jurisdiction gap joint open is predicted.The present invention can be by the hydraulic pressure of actual measurement somewhere certain depth, computer tube piece gap joint open size, so that the well in advance precautionary measures, reduce the loss of the brings such as leak.
Description
Technical field
The invention belongs to Tunnel Engineering technical fields, are related to a kind of duct pieces of shield tunnel gap opening measuring device.
Background technique
Shield tunnel liner is assembled generally by prefabricated pipe section, and section of jurisdiction seam is divided into longitudinal seam and circumferential direction
Seam, edge joint position are the weak links of liner structure stress.Shield tunnel will appear seam due to various reasons in construction work
Gap, including trolley vibration load, leakage, different geology, different buried depth, different construction factors, constraint difference, Different Ground
The various factors such as load and different surrounding enviroment variations.The deformation behaviour of shield tunnel is mainly shown as subtended angle and faulting of slab ends,
Deformability is very fragile, and inhomogeneous deformation and its influence to tunnel structure internal force, deformation are to cannot be neglected, and usually to tunnel
Road structure is unfavorable, after deformation or curvature reach a certain amount value, tunnel i.e. be likely to occur gap joint open it is excessive and seep water or
Section of jurisdiction tensile failure, causes stress excessively to concentrate, tunnel local damage, influences the safety and usability of shield tunnel.
Especially in construction time, since ground disturbance initial stage shield tunnel differential settlement is more serious, tunnel adjacent tubes
The engineering problems such as the opening deformation occurred between piece and water seepage of tunnel may be more pronounced.At present for gap at segment joint
Processing is primarily present discovery not in time, repairs not in time, the problems such as easily having an accident.
Summary of the invention
The object of the present invention is to provide a kind of duct pieces of shield tunnel gaps to open measuring method, can pass through actual measurement
The hydraulic pressure of somewhere certain depth, computer tube piece gap joint open size, so that the well in advance precautionary measures, reduce the bands such as leak
The loss come.Technical solution is as follows:
A kind of duct pieces of shield tunnel gap joint open prediction technique, used device include being clipped between the gap of two sections of jurisdiction
Water pocket, water pocket is connected with outer conduit and inner conduit, wherein water pocket is divided into interconnected middle part water pocket, external water capsule
With three parts of interior water pocket, middle part water pocket is clipped between two sections of jurisdiction, and external water capsule is located on the outside of tunnel duct piece and and outer conduit
Connection, interior water pocket is located on the inside of tunnel duct piece, and is connected to inner conduit；Outer conduit utilizes pressure pump by the first pond Zhong Shui
It extracts to the pressure pump of water pocket, the pressure gauge of measurement water pressure is connected on pressure pump；Inner conduit, which is connected with, can measure water
The pressure-control valve and flowmeter of pressure, for the water of exudation to be drained into the second pond；Include the following steps:
(1) pressure-control valve is closed, is pumped to the water in the first pond in water pocket by pressure pump；
(2) hydraulic pressure that pressure pump outflow water is measured using pressure gauge, with the increase of water pressure, section of jurisdiction gap joint open by
It is cumulative big, obtain the relationship between water pressure and gap joint open size；
(3) according to the hydraulic pressure at live certain depth, the size of section of jurisdiction gap joint open is predicted.
Detailed description of the invention
Fig. 1 is overall schematic
Fig. 2 is water pocket 1)
Include in Fig. 1~2:
1- water pocket, water pocket in the middle part of 11-, 12- external water capsule, water pocket in 13-
2- outer conduit
3- inner conduit
4- pressure gauge
5- pressure pump
6- pressure-control valve
7- flowmeter
The section of jurisdiction 8-
The pond 9-
The pond 10-
Specific embodiment
The present invention is described in detail with specific embodiment below in conjunction with the accompanying drawings.The present embodiment is with technical solution of the present invention
Premised on implemented, the detailed implementation method and specific operation process are given, but protection scope of the present invention is not limited to
Following embodiments.
Now in conjunction with above-mentioned each attached drawing, the case study on implementation that device for calculating is opened in duct pieces of shield tunnel gap is provided.
As shown in Figure 1, the present invention uses measuring device, including water pocket 1, conduit 2 and pressure gauge 4, pressure pump 5, pond 9,
Conduit 3 and pressure-control valve 6, flowmeter 7, pond 10 calculate shield by the hydraulic pressure at the certain depth of actual measurement somewhere
Tunnel duct piece gap joint open size and infiltration rate.As shown in Fig. 2, water pocket 1 divides for middle part water pocket 11, external water capsule 12 and interior water
Capsule 13.Middle part water pocket 11 is between the gap of two sections of jurisdiction.External water capsule 12 is located on the outside of tunnel, and connects outer conduit 2.Interior water
Capsule 13 is located on the inside of tunnel, and connects inner conduit 3.
Water pocket 1 is rubber material, and inside is equipped with water, is divided into middle part 13,3 water pocket 11, external water capsule 12 and interior water pocket water pockets
It is interconnected.Middle part water pocket 11 is clipped between two sections of jurisdiction.External water capsule 12 is located on the outside of tunnel, and connects middle part water pocket 11 and outer
Side conduit 2.Interior water pocket 13 is located on the inside of tunnel, and connects middle part water pocket 11 and inner conduit 3.
Outer conduit 2 is irony conduit, for conveying water, is connected with the pressure pump 5 of water in pressurization pond 9, pressure pump 5
On be connected with measurement water pressure pressure gauge 4.
Inner conduit 3 is irony conduit, is connected with the pressure-control valve 6 of measurement water pressure, measures the stream of water flow flow velocity
Scale 7 and pond 10.
Pressure gauge 4 is using elastic element as sensing element, for measuring the hydraulic pressure numerical value of pressure (hydraulic) water in pressure pump 5.
Pressure pump 5 is used to pump the water in pond 9, and can increase water pressure.
Pressure-control valve 6 connects interior water pocket 12 and flowmeter 7, and measures the water pressure of water in interior water pocket 12.
Flowmeter 7 can measure water instantaneous velocity rate and accumulative water flow total amount.
In the lab, pressure-control valve 6 is closed, is previously implanted one into water pocket 1 in the case where section of jurisdiction 8 is fitted closely
Quantitative water makes water pocket 1 be in full swelling state.It is pressurizeed by pressure pump 5 to the water in pond 9, and water is pumped
Into water pocket 1, pressure gauge 4 can measure the hydraulic pressure of 5 outflow water of pressure pump, since pressure-control valve 6 is to close, water pocket 1
In water pressure, including middle part water pocket 11 everywhere, water pressure is equal in external water capsule 12 and interior water pocket 13, records launching stress.This
When with water pressure increase, section of jurisdiction gap can gradually increase, and section of jurisdiction gap joint open can be directly measured with tools such as tape measures
Size, and record numerical values recited.Repeatedly adjusting pressure pump 5 obtains multiple groups difference hydraulic pressure and its corresponding section of jurisdiction gap joint open is big
It is small, the described point in plane right-angle coordinate, and linked up each point with curve, it is approached with curvilinear function, obtains hydraulic pressure
Relationship 1 between the joint open size of section of jurisdiction gap.
In the lab, pressure-control valve 6 is opened, is previously implanted one into water pocket 1 in the case where section of jurisdiction 8 is fitted closely
Quantitative water makes water pocket 1 be in full swelling state.It is pressurizeed by pressure pump 5 to the water in pond 9, and water is pumped
Into water pocket 1, pressure gauge 4 can measure the hydraulic pressure of 5 outflow water of pressure pump, since pressure-control valve 6 is open, pressure gauge at this time
4 hydraulic pressure measured are the water pressure in external water capsule 12, and water flow passes through middle part water pocket 11 and has certain head loss, pass through pressure
Control valve 6 can measure the water pressure in interior water pocket 13, record the water pressure in external water capsule 12 and interior water pocket 13 respectively.At this time with
The increase of water pressure, flowmeter 7 measure water flow flow velocity accordingly also will increase, record flow rate of water flow numerical values recited.It is more
Secondary adjusting pressure pump 5 obtains multiple groups difference hydraulic pressure and its corresponding flow rate of water flow numerical values recited, retouches in plane right-angle coordinate
Point, and linked up each point with curve, it is approached with curvilinear function, obtains the relationship between hydraulic pressure and flow rate of water flow size
2。
In practical projects, it will do it geological prospecting before constructing tunnel, it can be big by consulting certain local depth water pressure
It is small, by relationship 1 and relationship 2, tunnel duct piece gap joint open size and water seepage of tunnel rate are calculated, so as to construct
Before carry out the precautionary measures, reduce the loss of the brings such as leak.
Claims (1)
1. a kind of duct pieces of shield tunnel gap joint open prediction technique, used device includes being clipped between the gap of two sections of jurisdiction
Water pocket, water pocket are connected with outer conduit and inner conduit, wherein water pocket be divided into interconnected middle part water pocket, external water capsule and
Three parts of interior water pocket, middle part water pocket are clipped between two sections of jurisdiction, and external water capsule is located on the outside of tunnel duct piece and connects with outer conduit
Logical, interior water pocket is located on the inside of tunnel duct piece, and is connected to inner conduit；Outer conduit is taken out water in the first pond using pressure pump
It takes to the pressure pump of water pocket, the pressure gauge of measurement water pressure is connected on pressure pump；Inner conduit, which is connected with, can measure hydraulic pressure
The pressure-control valve and flowmeter of power, for the water of exudation to be drained into the second pond；Include the following steps:
(1) pressure-control valve is closed, is pumped to the water in the first pond in water pocket by pressure pump；
(2) hydraulic pressure that pressure pump outflow water is measured using pressure gauge, with the increase of water pressure, section of jurisdiction gap joint open gradually increases
Greatly, the relationship between water pressure and gap joint open size is obtained；
(3) according to the hydraulic pressure at live certain depth, the size of section of jurisdiction gap joint open is predicted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810416158.5A CN109029308A (en) | 2018-05-03 | 2018-05-03 | Duct pieces of shield tunnel gap joint open prediction technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810416158.5A CN109029308A (en) | 2018-05-03 | 2018-05-03 | Duct pieces of shield tunnel gap joint open prediction technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109029308A true CN109029308A (en) | 2018-12-18 |
Family
ID=64629709
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810416158.5A Pending CN109029308A (en) | 2018-05-03 | 2018-05-03 | Duct pieces of shield tunnel gap joint open prediction technique |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015078533A (en) * | 2013-10-17 | 2015-04-23 | 新日鐵住金株式会社 | Composite segment and producing method of composite segment |
| CN204924568U (en) * | 2015-05-08 | 2015-12-30 | 同济大学 | Tunnel seam waterproof performance test device |
| CN105403366A (en) * | 2015-09-23 | 2016-03-16 | 同济大学 | Anti-permeability performance test system for shield tunnel segment circumferential seams |
| CN105738220A (en) * | 2016-04-12 | 2016-07-06 | 天津大学 | Pipe piece elastic sealing gasket water tightness testing method considering soil body influences |
| CN106885661A (en) * | 2017-02-23 | 2017-06-23 | 天津大学 | The shield tunnel pipe ring anti-permeability performance test method of simulation water, native load action |
| CN107036763A (en) * | 2017-03-09 | 2017-08-11 | 同济大学 | The test method of shield duct piece joint percolating water |
-
2018
- 2018-05-03 CN CN201810416158.5A patent/CN109029308A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015078533A (en) * | 2013-10-17 | 2015-04-23 | 新日鐵住金株式会社 | Composite segment and producing method of composite segment |
| CN204924568U (en) * | 2015-05-08 | 2015-12-30 | 同济大学 | Tunnel seam waterproof performance test device |
| CN105403366A (en) * | 2015-09-23 | 2016-03-16 | 同济大学 | Anti-permeability performance test system for shield tunnel segment circumferential seams |
| CN105738220A (en) * | 2016-04-12 | 2016-07-06 | 天津大学 | Pipe piece elastic sealing gasket water tightness testing method considering soil body influences |
| CN106885661A (en) * | 2017-02-23 | 2017-06-23 | 天津大学 | The shield tunnel pipe ring anti-permeability performance test method of simulation water, native load action |
| CN107036763A (en) * | 2017-03-09 | 2017-08-11 | 同济大学 | The test method of shield duct piece joint percolating water |
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Application publication date: 20181218 |
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| RJ01 | Rejection of invention patent application after publication |