CN205808510U - A kind of optical-fiber laser range finding vacuum preloading test device for water level - Google Patents
A kind of optical-fiber laser range finding vacuum preloading test device for water level Download PDFInfo
- Publication number
- CN205808510U CN205808510U CN201620704662.1U CN201620704662U CN205808510U CN 205808510 U CN205808510 U CN 205808510U CN 201620704662 U CN201620704662 U CN 201620704662U CN 205808510 U CN205808510 U CN 205808510U
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- water level
- coupled laser
- optical
- gland
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- Measuring Fluid Pressure (AREA)
Abstract
The utility model discloses a kind of optical-fiber laser range finding vacuum preloading test device for water level, including water level pipe, gland, reflector plate, optical fiber, the joints of optical fibre, optical fiber-coupled laser probe and optical fiber-coupled laser diastimeter, described reflector plate floats on the water surface in described water level pipe, described gland seals buckle closure on described water level pipe, described optical fiber-coupled laser probe is inlaid on described gland, described optical fiber-coupled laser probe is relative with described reflector plate, described optical fiber-coupled laser probe is provided with optical fiber, described optical fiber is by the joints of optical fibre and described optical fiber-coupled laser diastimeter.This utility model uses optical fiber to connect probe and considerably reduces the test destruction to diaphragm seal, it is ensured that during test level of ground water, the soil body is in vacuum state, makes test result true and reliable, and then can obtain Variation Regular of Groundwater Levels in ground exactly.And this utility model simple in construction, lightweight, easy for installation, test operation is easy, and efficiency is high, and testing cost is low.
Description
Technical field
This utility model relates to a kind of vacuum preloading test device for water level, pre-particularly to a kind of optical-fiber laser range finding vacuum
Pressure test device for water level.
Background technology
During vacuum pre-press reinforcing, Variation Regular of Groundwater Levels in test stabilization zone, be conducive to vacuum preloading is added
Gu the evaluation of effect and analysis.But in practice process, existing method of testing and equipment, can not truly reflect vacuum state
Lower subsoil water place value.Root problem is it cannot be guaranteed that level of ground water measures under vacuum operation state.Although test is set
Standby improve, when making measurement in water level pipe not with extraneous UNICOM, but water level pipe still needs to penetrate vacuum preloading diaphragm seal, along with time
Between to elapse water level pipe the most aging with diaphragm seal gluing position, and diaphragm seal can constantly settle along with ground and pull and water level pipe
Glued position, ultimately results in water level pipe surrounding soil and loses vacuum state, even if can not be not anti-with extraneous contact in water level pipe
Reflect the change of level of ground water under vacuum state.Therefore be badly in need of developing one and ensure that measurement subsoil water under vacuum operation state
The vacuum preloading test device for water level of position.
Summary of the invention
This utility model provides a kind of optical-fiber laser range finding vacuum pre-for solving technical problem present in known technology
Pressure test device for water level, this device ensure that measurement level of ground water under vacuum operation state.
This utility model is adopted the technical scheme that by solving technical problem present in known technology: a kind of optical fiber is sharp
Ligh-ranging vacuum preloading test device for water level, swashs including water level pipe, gland, reflector plate, optical fiber, the joints of optical fibre, optical fiber coupling
Light probe and optical fiber-coupled laser diastimeter, described reflector plate floats on the water surface in described water level pipe, described gland seal buckle
Cover on described water level pipe, described optical fiber-coupled laser probe be inlaid on described gland, described optical fiber-coupled laser probe with
Described reflector plate is relative, is provided with optical fiber on described optical fiber-coupled laser probe, and described optical fiber passes through the joints of optical fibre with described
Optical fiber-coupled laser diastimeter.
Described gland is square iron plate.
Bottom lock and the sidewall of described water level pipe are provided with permeable hole, and the side-wall outer side at described water level pipe is coated with draining
Plate filter membrane.
This utility model has the advantage that with good effect: uses optical fiber to connect probe and considerably reduces test to close
The destruction of sealer, it is ensured that during test level of ground water, the soil body is in vacuum state, makes test result true and reliable, and then can be accurate
Really obtain Variation Regular of Groundwater Levels in ground.And this utility model simple in construction, lightweight, easy for installation, test operation
Simplicity, efficiency is high, and testing cost is low；This utility model solves prior art level of ground water hourglass during test vacuum preloading
Gas, measured value are inaccurate, foundation soil sedimentation is uneven, the problem of ageing equipment, it is possible to be preferably suitable for underground during vacuum preloading
The measurement of water level.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
In figure: 1, water level pipe, 2, gland, 3, reflector plate, 4, optical fiber-coupled laser diastimeter, 5, the joints of optical fibre, 6, light
Fibre, 7, optical fiber-coupled laser probe, 8, diaphragm seal, 9, sand bedding course, 10, waterline.
Detailed description of the invention
For summary of the invention of the present utility model, feature and effect can be further appreciated that, hereby enumerate following example, and coordinate
Accompanying drawing describes in detail as follows:
Referring to Fig. 1, a kind of optical-fiber laser range finding vacuum preloading test device for water level, including water level pipe 1, gland 2, reflection
Sheet 3, optical fiber 6, the joints of optical fibre 5, optical fiber-coupled laser probe 7 and optical fiber-coupled laser diastimeter 4, described reflector plate 3 is floating
The water surface in described water level pipe 1, described gland 2 seals buckle closure on described water level pipe 1, described optical fiber-coupled laser probe 7
Being inlaid on described gland 2, described optical fiber-coupled laser probe 7 is relative with described reflector plate 3, visits at described optical fiber-coupled laser
7 are provided with optical fiber 6, and described optical fiber 6 is by the joints of optical fibre 5 and described optical fiber-coupled laser diastimeter 4.
Above-mentioned reflector plate 3 is light, and density is less than water, and diameter is less than the interior warp of water level pipe.
In the present embodiment, described gland 2 is square iron plate, it is possible to make water level pipe 1 surrounding soil Equalsettlement.Described water
Bottom lock and the sidewall of position pipe 1 are provided with permeable hole, and the side-wall outer side at described water level pipe 1 is coated with draining board filter membrane, in case
Sandy soil blocking permeable hole.
Installation of the present utility model and using method:
1) before vacuum preloading operation starts, utilize rig vertical drilling on the test soil body, will fit together, such as figure
Water level pipe 1 shown in 1, reflector plate 3, optical fiber 6, optical fiber-coupled laser probe 7, gland 2 are embedded in pre-manufactured hole, it is ensured that water level pipe
1 vertically, and the mouth of pipe is higher than phreatic line 10.
2) lay sand bedding course 9 and during diaphragm seal 8 in vacuum preloading operation, gland 2 and optical fiber-coupled laser are popped one's head in 7 embedding
In sand bedding course 9 times, optical fiber 6 vertically penetrates sand bedding course 9 and diaphragm seal 8, ensures the complete of diaphragm seal 8 with glue sealing at perforation
Property, the joints of optical fibre 5 are installed in optical fiber 6 outer end.
3) when evacuation, measure the elevation H at optical fiber 6 and diaphragm seal 8 perforation and optical fiber 6 is exposed at outside diaphragm seal 8
Length L.
4) being connected with optical fiber-coupled laser diastimeter 4 by the joints of optical fibre 5, ranging readings is d, then level of ground water elevation D
=H-(d-L).
5) step 3 is repeated)-4) the level of ground water elevation of different time points can be measured.
Although being described preferred embodiment of the present utility model above in conjunction with accompanying drawing, but this utility model is not
Being confined to above-mentioned detailed description of the invention, above-mentioned detailed description of the invention is only schematically, is not restrictive, ability
The those of ordinary skill in territory is under enlightenment of the present utility model, without departing from this utility model objective and claimed
In the case of scope, it is also possible to make a lot of form, within these belong to protection domain of the present utility model.
Claims (3)
1. optical-fiber laser range finding vacuum preloading test device for water level, it is characterised in that include water level pipe, gland, reflector plate,
Optical fiber, the joints of optical fibre, optical fiber-coupled laser probe and optical fiber-coupled laser diastimeter, described reflector plate floats on described water level
The water surface in pipe, described gland sealing buckle closure is on described water level pipe, and described optical fiber-coupled laser probe is inlaid in described gland
On, described optical fiber-coupled laser probe is relative with described reflector plate, is provided with optical fiber on described optical fiber-coupled laser probe, described
Optical fiber is by the joints of optical fibre and described optical fiber-coupled laser diastimeter.
Optical-fiber laser range finding vacuum preloading test device for water level the most according to claim 1, it is characterised in that described gland is
Square iron plate.
Optical-fiber laser range finding vacuum preloading test device for water level the most according to claim 1, it is characterised in that described water level pipe
Bottom lock and sidewall be provided with permeable hole, the side-wall outer side at described water level pipe is coated with draining board filter membrane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620704662.1U CN205808510U (en) | 2016-07-06 | 2016-07-06 | A kind of optical-fiber laser range finding vacuum preloading test device for water level |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620704662.1U CN205808510U (en) | 2016-07-06 | 2016-07-06 | A kind of optical-fiber laser range finding vacuum preloading test device for water level |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205808510U true CN205808510U (en) | 2016-12-14 |
Family
ID=58140753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620704662.1U Expired - Fee Related CN205808510U (en) | 2016-07-06 | 2016-07-06 | A kind of optical-fiber laser range finding vacuum preloading test device for water level |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205808510U (en) |
-
2016
- 2016-07-06 CN CN201620704662.1U patent/CN205808510U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161214 Termination date: 20190706 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |