CN207894401U - A kind of monitoring system of riverbed vertical deformation - Google Patents
A kind of monitoring system of riverbed vertical deformation Download PDFInfo
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- CN207894401U CN207894401U CN201721451786.4U CN201721451786U CN207894401U CN 207894401 U CN207894401 U CN 207894401U CN 201721451786 U CN201721451786 U CN 201721451786U CN 207894401 U CN207894401 U CN 207894401U
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- China
- Prior art keywords
- sink
- flexible tube
- riverbed
- main flexible
- vertical deformation
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Abstract
The utility model discloses a kind of monitoring systems of riverbed vertical deformation, it includes the detection main flexible tube for detecting river-bed deformation, spaced set has multiple pore pressures to be counted as monitoring point in detection main flexible tube, detection main flexible tube is connected with data acquisition device, data converter is housed inside data acquisition device, the output cord of each pore pressure meter in detection main flexible tube is connected to the data converter in data acquisition device, an integrated data output line is changed by the data converter, data acquisition device is connected to land sink by skirt, and integrated data output line inside skirt by also leading in sink, and it is connect with external data collector by sink line outlet；When vertical deformation occurs for riverbed, detection main flexible tube can be locally deformed with riverbed, and the detected value of the corresponding pore pressure meter in detection main flexible tube at deformation can change, and the vertical displacement amount in the riverbed at this measuring point is calculated by its variable quantity.
Description
Technical field
The utility model is used for technical field of civil engineering, especially a kind of monitoring system of riverbed vertical deformation.
Background technology
By the development of recent domestic infrastructure, major Urban Underground iron, vcehicular tunnel etc. become in rising year by year
The engineering project in gesture, shield driven tunnel crossing river and marine site is more and more, and monitors riverbed vertical deformation to projects
Safe construction control is of crucial importance, to the measurement accuracy of riverbed vertical deformation requires that 1 millimeter need to be reached, and is wearing river apart from big, water
Under the influence of the factors such as deep, fast, the current ship of river flow velocity, there is presently no good solution, it is badly in need of providing economical
Rationally, the high measuring device of technical guarantee and its application process prevent the security risk that shield-tunneling construction is brought.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of monitoring system of riverbed vertical deformation
System.
The utility model is achieved through the following technical solutions：
A kind of monitoring system of riverbed vertical deformation comprising riverbed vertical deformation detection device and land liquid level are relatively solid
Fixed end measuring device two parts；
Vertical deformation detection device in riverbed includes detection main flexible tube, data acquisition device, is provided in detection main flexible tube multiple
Pore pressure is counted as monitoring point, and detection main flexible tube is connected with data acquisition device, and data converter is housed inside data acquisition device, examines
The output cord for each pore pressure meter surveyed in main flexible tube is connected to the data converter in data acquisition device, passes through the data conversion
Device changes into an integrated data output line, and data acquisition device is also associated with skirt；
It includes a sink that land liquid level, which is relatively fixed end measuring device, line outlet is additionally provided on the side wall of sink, in water
It is provided with temperature sensor and water-level gauge in slot, the output cord of temperature sensor and water-level gauge is connected to by sink line outlet
External data collector；Sedimentation is installed in sink outer walls and surveys nail, observes the sedimentation situation of sink；
The data acquisition device is connected to by skirt with sink, and integrated data output line inside skirt by leading to sink
It is interior, and connect with external data collector by sink line outlet.
In the above-mentioned technical solutions, detection main flexible tube uses specification for DN100mm high pressure steel wire hoses.
In the above-mentioned technical solutions, detection main flexible tube is made of the sub- pipe connection of more piece, is connected by box cupling between each sub- pipe,
Pore pressure meter mounting bracket is welded in each box cupling, pore pressure meter is mounted in pore pressure meter mounting bracket.
In the above-mentioned technical solutions, lifting lug is installed on detection main flexible tube, for connecting with the hoist cable below truss hoisting
It connects.
In the above-mentioned technical solutions, sink is provided with upper cover, and bottom of gullet remains for connecting in advance the ring flange interface of skirt.
It the advantages of the utility model and has the beneficial effect that：
1, the vertical deformation in the high-precision riverbed of deep water can be realized by wearing the measuring device of river shield tunnel riverbed vertical deformation
It measures, good measuring accuracy, stability is high；
2, measuring device is reusable, economic, environmental protection；
3, the factors such as distance is remote, the depth of water is big, flow velocity is fast, ship passes through can be overcome to influence, had excellent intact
Rate；
4, multiple spot vertical deformation can be achieved with surveying, including multiple measuring points in the cross section in tunnel top riverbed or axial section
Multiple measuring points；
5, measuring speed is fast, can provide vertical deformation data rapidly；
6, work progress is simple, preferably operates；
In short, by the utility model, keep river bed shield tunnel construction process control safer reliable.
Description of the drawings
Fig. 1 is the structural schematic diagram of the utility model.
Fig. 2 is the structural schematic diagram of the utility model riverbed vertical deformation detection device.
Fig. 3 is the structural schematic diagram that the land liquid level of the utility model is relatively fixed end measuring device.
Specific implementation mode
The technical solution of the utility model is further illustrated with reference to specific embodiment.
A kind of monitoring system of riverbed vertical deformation comprising riverbed vertical deformation detection device and land liquid level are relatively solid
Fixed end measuring device two parts.Specifically construct according to the following steps：
Step 1：Prefabricated (truss hoisting, riverbed vertical deformation detection device, land liquid level are relatively fixed end measuring device)
1. truss hoisting：Prior prefabricated truss hoisting 1, truss hoisting select the H profile steel system of model 300mm × 300mm
Make, length 24m, the welding of interface full weld is used in combination same thickness steel plate solid in weld, avoids unbalance stress in hoisting process
It is even to cause to bend.1 lifting lug 2 is welded per spacing 7m at the top of truss hoisting, welds 4 altogether, selects 4Steel wire rope
As the hoist cable 3 of ground jack, left and right two should be symmetrical one by one with intermediate two root long degree, it is ensured that in steady, horizontal when lifting
State；A hoist cable 4 is drawn every 5m below truss hoisting, and hoist cable bottom end connecting shackle 5 is furnished with detacher on suspension hook.
2. riverbed vertical deformation detection device：Including detection main flexible tube 6, data acquisition device 7, pore pressure meter 8, main flexible tube is detected
Use specification for DN100mm high pressure steel wire hoses, detection main flexible tube is made of the sub- pipe connection of more piece, passes through box cupling between each sub- pipe
Connection, is welded with pore pressure meter mounting bracket in each box cupling, and pore pressure meter 8 is mounted in pore pressure meter mounting bracket；It is examining
It surveys on main flexible tube and one lifting lug 9 is installed every 5m, for being connect with the hoist cable below truss hoisting；Detect two end seals of main flexible tube
It closes, detection main flexible tube 6 is connected with data acquisition device 7, and waterproof data converter is housed inside data acquisition device, detects main flexible tube
The output cord of interior each pore pressure meter 8 is connected to the data converter in data acquisition device, is changed by the data converter
A piece integrated data output line, setting internal diameter 50mm ring flanges export on data acquisition device, ring flange outlet withDraw
Pipe 10 is tightly connected, and the integrated data output line of data converter is exported from ring flange to be introducedIn skirt,
The length long enough of skirt.
4. land liquid level is relatively fixed end measuring device：Including a sink 11, bottom of gullet reserves the flange of internal diameter 50mm
Disk interface 12, ring flange interface is for connectingThe other end of skirt；Sink is provided with upper cover 13, on the side wall of sink
It is additionally provided with line outlet 14；One temperature sensor 15 and a water-level gauge 16 are installed respectively in sink, in sink outer walls
Installation data collector 17, temperature sensor and water-level gauge cable connect data collector by line outlet 14；By sink surrounding
It is sealed with concrete, plays the role of fixed sink, stablizes head in sink, sedimentation is installed in sink outer walls and surveys nail 18, observation
The sedimentation situation of sink.
Step 2：Lifting
The lift-on and lift-off ship of length 50m is selected, meets lifting length and on-site consolidation requirement, carries positioning system, it can after casting anchor
Stablize and buried on section in design, hoisting machine is connect, the hoist cable of truss hoisting and detection by position error ± 1m with truss hoisting
The lifting lug of main flexible tube connects, and clump weight 20 is connected at the lifting lug of detection main flexible tube, then detects riverbed vertical deformation and fills
Integral level lifting is set, is slowly transferred on riverbed, then detacher action makes truss hoisting with detection main flexible tube from lifting purlin
The frame rise water surface.
Step 3：Skirt is connected with cable
With tender by riverbed vertical deformation detection deviceSkirt 10 is sink to river bed, and is led to land along bank slope
Face, the ring flange interface 12 that 11 bottom surface of sink of end measuring device is relatively fixed with land liquid level are tightly connected, and will be in skirt
Integrated data output line introduce sink in, integrated data output line is connected to data collector by the line outlet of sink；Water
Face is covered so that upper draft tube sandbag 19 is whole, is played fixed and protective effect, can also be reduced Water Temperature in pipe；In sink
Filter screen is installed at skirt nozzle, prevents sundries from entering in skirt；The data collector can send mould with remote wireless signals
Block connects, and the signal that data collector acquires is sent to monitor terminal by remote wireless signals sending module.
Step 4：It measures
The water filling into sink makes water fill the detection main flexible tube of riverbed vertical deformation detection device, data acquisition device and draw
Pipe, rises in sink until water level until the line of observation；It is acquired based on all pore pressures by design observing frequency after stable level, temperature
Sensor and water level count, and when vertical deformation (sedimentation) occurs for riverbed, the detection master of riverbed vertical deformation detection device is soft
Pipe can be locally deformed with riverbed, and the detected value of the corresponding pore pressure meter in detection main flexible tube at deformation can change, and be led to
Its variable quantity is crossed to calculate the vertical displacement amount in the riverbed at this measuring point, calculation formula is as follows：
S=(Pi-P0)·100+Δs (2)
In formula：
Pi--- the hydrostatic pressure (kPa) of pore pressure meter detection；
fi--- certain period monitoring frequency (Hz)；
K --- gauge head coefficient；
α --- temperature adjustmemt；
S --- vertical deformation (mm)；
ΔS--- land liquid level settlement modification value (mm).The settling amount that land liquid level settlement modification value is equal to sink (passes through
Sedimentation is surveyed nail and is measured) plus fluid change amount (being measured by liquid level gauge) in sink.
Conclusion：
Show that above-mentioned monitoring device utilizes the principle of hydrostatic pressure difference by engineering practice, measures riverbed vertical deformation
Technology meets the requirement of high-precision river-bed deformation, and data stabilization, reliable, measurement convenience.
Illustrative description has been done to the utility model above, it should explanation, in the core for not departing from the utility model
In the case of the heart, it is any it is simple deformation, modification or other skilled in the art can not spend creative work etc.
The scope of protection of the utility model is each fallen with replacing.
Claims (5)
1. a kind of monitoring system of riverbed vertical deformation, it is characterised in that：It includes riverbed vertical deformation detection device and land
Liquid level is relatively fixed end measuring device two parts；
Vertical deformation detection device in riverbed includes detection main flexible tube, data acquisition device, detects in main flexible tube and is provided with multiple pore pressures
It is counted as monitoring point, detection main flexible tube is connected with data acquisition device, and data converter is housed inside data acquisition device, and detection is led
The output cord of each pore pressure meter in hose is connected to the data converter in data acquisition device, is turned by the data converter
Cheng Yigen integrated data output lines, data acquisition device are also associated with skirt；
It includes a sink that land liquid level, which is relatively fixed end measuring device, line outlet is additionally provided on the side wall of sink, in sink
It is provided with temperature sensor and water-level gauge, the output cord of temperature sensor and water-level gauge is connected to outside by sink line outlet
Data collector；Sedimentation is installed in sink outer walls and surveys nail, observes the sedimentation situation of sink；
The data acquisition device is connected to by skirt with sink, and integrated data output line is by leading in sink inside skirt,
And it is connect with external data collector by sink line outlet.
2. a kind of monitoring system of riverbed vertical deformation according to claim 1, it is characterised in that：Main flexible tube is detected to use
Specification is DN100mm high pressure steel wire hoses.
3. a kind of monitoring system of riverbed vertical deformation according to claim 1, it is characterised in that：Main flexible tube is detected by more
The connection of knot pipe forms, and is connected by box cupling between each sub- pipe, pore pressure meter mounting bracket, pore pressure are welded in each box cupling
Meter is mounted in pore pressure meter mounting bracket.
4. a kind of monitoring system of riverbed vertical deformation according to claim 1, it is characterised in that：On detection main flexible tube
Lifting lug is installed, for being connect with the hoist cable below truss hoisting.
5. a kind of monitoring system of riverbed vertical deformation according to claim 1, it is characterised in that：Sink is provided with
Lid, bottom of gullet remain for connecting in advance the ring flange interface of skirt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721451786.4U CN207894401U (en) | 2017-11-02 | 2017-11-02 | A kind of monitoring system of riverbed vertical deformation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721451786.4U CN207894401U (en) | 2017-11-02 | 2017-11-02 | A kind of monitoring system of riverbed vertical deformation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207894401U true CN207894401U (en) | 2018-09-21 |
Family
ID=63547726
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721451786.4U Active CN207894401U (en) | 2017-11-02 | 2017-11-02 | A kind of monitoring system of riverbed vertical deformation |
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| Country | Link |
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| CN (1) | CN207894401U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107764232A (en) * | 2017-11-02 | 2018-03-06 | 中交天津港湾工程研究院有限公司 | A kind of measuring system and its construction, measuring method for wearing river shield tunnel riverbed vertical deformation |
-
2017
- 2017-11-02 CN CN201721451786.4U patent/CN207894401U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107764232A (en) * | 2017-11-02 | 2018-03-06 | 中交天津港湾工程研究院有限公司 | A kind of measuring system and its construction, measuring method for wearing river shield tunnel riverbed vertical deformation |
| CN107764232B (en) * | 2017-11-02 | 2024-03-22 | 中交天津港湾工程研究院有限公司 | Measuring system for vertical deformation of river bed of river-crossing shield tunnel and construction and measuring method thereof |
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