CN208458988U - Open measuring device in duct pieces of shield tunnel gap - Google Patents
Open measuring device in duct pieces of shield tunnel gap Download PDFInfo
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- CN208458988U CN208458988U CN201820651761.7U CN201820651761U CN208458988U CN 208458988 U CN208458988 U CN 208458988U CN 201820651761 U CN201820651761 U CN 201820651761U CN 208458988 U CN208458988 U CN 208458988U
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Abstract
The utility model relates to a kind of duct pieces of shield tunnel gaps to open measuring device, for by according to the hydraulic pressure at certain depth, calculate duct pieces of shield tunnel gap joint open size and infiltration rate, including the water pocket being clipped between the gap of two sections of jurisdiction, it is characterized in that, water pocket is connected with outer conduit and inner conduit, wherein, water pocket is divided into interconnected middle part water pocket, three parts of external water capsule and interior water pocket, middle part water pocket is clipped between two sections of jurisdiction, external water capsule is located on the outside of tunnel and is connected to outer conduit, interior water pocket is located on the inside of tunnel, and it is connected to inner conduit；Outer conduit is extracted water in the first pond to the pressure pump of water pocket using pressure pump, and the pressure gauge of measurement water pressure is connected on pressure pump；Inner conduit is connected with the pressure-control valve and flowmeter that can measure water pressure, for the water of exudation to be drained into the second pond., can be by the hydraulic pressure of actual measurement somewhere certain depth using the device of the utility model, infiltration rate between computer tube piece gap joint open size and tunnel duct piece gap, so that the well in advance precautionary measures, reduce the loss of the brings such as leak.
Description
Technical field
The utility model belongs to Tunnel Engineering technical field, is related to a kind of duct pieces of shield tunnel gap opening measurement dress
It sets.
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.
Utility model content
The purpose of the utility model is to provide a kind of duct pieces of shield tunnel gaps to open measuring device, can pass through reality
The hydraulic pressure of measurement somewhere certain depth, the infiltration rate between computer tube piece gap joint open size and tunnel duct piece gap,
To the well in advance precautionary measures, the loss of the brings such as leak is reduced.Technical solution is as follows:
A kind of duct pieces of shield tunnel gap opening measuring device, for by calculating according to the hydraulic pressure at certain depth
Duct pieces of shield tunnel gap joint open size and infiltration rate, including the water pocket being clipped between the gap of two sections of jurisdiction, which is characterized in that
Water pocket is connected with outer conduit and inner conduit, wherein
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 in two pipes
Between piece, external water capsule is located on the outside of tunnel and is connected to outer conduit, and interior water pocket is located on the inside of tunnel, and connects with inner conduit
It is logical.
Outer conduit is extracted water in the first pond to the pressure pump of water pocket using pressure pump, is connected with measurement on pressure pump
The pressure gauge of water pressure；
Inner conduit is connected with the pressure-control valve and flowmeter that can measure water pressure, for draining into the water of exudation
Second pond.
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 utility model is described in detail in the following with reference to the drawings and specific embodiments.The present embodiment is with the utility model
Implemented premised on technical solution, the detailed implementation method and specific operation process are given, but the guarantor of the utility model
Shield range is not limited to the 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 measuring device of the utility model, 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 pass through the hydraulic pressure at the certain depth of actual measurement somewhere, calculate shield
Structure 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 pocket 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.It is interior
Water pocket 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. measuring device is opened in a kind of duct pieces of shield tunnel gap, for by calculating shield according to the hydraulic pressure at certain depth
Structure tunnel duct piece gap joint open size and infiltration rate, including the water pocket being clipped between two tunnel duct piece gaps, feature exists
In water pocket is connected with outer conduit and inner conduit, wherein
Water pocket is divided into three interconnected middle part water pocket, external water capsule and interior water pocket parts, middle part water pocket be clipped in two sections of jurisdiction it
Between, external water capsule is located on the outside of tunnel duct piece and is connected to outer conduit, and interior water pocket is located on the inside of tunnel duct piece, and and inner conduit
Connection；
Outer conduit is extracted water in the first pond to the pressure pump of water pocket using pressure pump, is connected with measurement hydraulic pressure on pressure pump
The pressure gauge of power；
Inner conduit is connected with the pressure-control valve and flowmeter that can measure water pressure, for the water of exudation to be drained into second
Pond.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820651761.7U CN208458988U (en) | 2018-05-03 | 2018-05-03 | Open measuring device in duct pieces of shield tunnel gap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820651761.7U CN208458988U (en) | 2018-05-03 | 2018-05-03 | Open measuring device in duct pieces of shield tunnel gap |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208458988U true CN208458988U (en) | 2019-02-01 |
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ID=65150639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820651761.7U Active CN208458988U (en) | 2018-05-03 | 2018-05-03 | Open measuring device in duct pieces of shield tunnel gap |
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| Country | Link |
|---|---|
| CN (1) | CN208458988U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109000899A (en) * | 2018-05-03 | 2018-12-14 | 天津大学 | Open measuring device in duct pieces of shield tunnel gap |
-
2018
- 2018-05-03 CN CN201820651761.7U patent/CN208458988U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109000899A (en) * | 2018-05-03 | 2018-12-14 | 天津大学 | Open measuring device in duct pieces of shield tunnel gap |
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