CN201288320Y - Relief well tube - Google Patents
Relief well tube Download PDFInfo
- Publication number
- CN201288320Y CN201288320Y CNU2008202018724U CN200820201872U CN201288320Y CN 201288320 Y CN201288320 Y CN 201288320Y CN U2008202018724 U CNU2008202018724 U CN U2008202018724U CN 200820201872 U CN200820201872 U CN 200820201872U CN 201288320 Y CN201288320 Y CN 201288320Y
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- CN
- China
- Prior art keywords
- pipe
- well
- plug
- well casing
- strainer
- 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 - Lifetime
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- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The utility relates to a relief well in dam protection engineering for river. The invention provide a relief well pipe comprising upper part riser pipe and lower strainer pipe provided with bar type slotted hole at pipe wall characterized in that: end of strainer pipe is connected with a pipe plug whose outer diameter is equivalent to pre-excavated boothole. The well pipe plug is provided with several through-holes; middle part keeps plug solid part whose diameter is larger than outer diameter of strainer pipe; the well pipe plug is made of plastic. The strainer pipe is provided with bar type slotted hole and has characteristics of rare jam and good drainage effect; the well pipe plug connected with the end of strainer pipe enables the well pipe to be easily positioned and mounted, Which guarantees well pipe in place and uniform filling when the filler is filled out of well pipe, and promotes well quality. The maintenance for well pipe is more easier and life time of relief well is prolonged.
Description
Technical field
The utility model relates to the relief well in the river dyke preventive works.
Background technology
Relief well is a kind of commonly used and effective river dyke protective reinforcing facility, and its major function is the subsurface seepage flow amount of dredging in the dike in flood season.When outer river position raise, relief well played the draining depressurization, thereby reduced artesian head and the osmotic pressure that acts in levee foundation layer of sand or the dam inner covering layer, prevented basic dike seepage deformation and seepage failure phenomenon, the protection embankment safety.The structure of relief well as shown in Figure 1, well casing adopts pvc pipe to make usually, top is divided into riser pipe, the bottom is divided into filter pipe.The filter pipe part is dug on tube wall and is beneficial to the into bar-shaped trough or the aperture (percent opening 13～20%) of water, and the annular space slicing and filling between well casing and the wellhole meets the gravel filter material that size grading requires.In the prior art, well casing does not have positioner, is difficult to well casing is installed to wellhole central authorities exact position.And be easy to take place water inlet emptying aperture clogging.
The utility model content:
The purpose of this utility model is to propose a kind of pressure reducing well pipe, and it is provided with positioner, make have simple and practical, be easy to install and have the drainage good effectiveness.
The utility model can be realized by following technical solution:
A kind of pressure reducing well pipe, include superposed riser pipe portion and be positioned at the filter pipe portion of bottom, filter pipe portion is provided with bar shape trench hole on tube wall, it is characterized in that: filter pipe portion end is connected with a well casing plug, and the external profile diameter of this well casing plug is suitable with the hole of digging a well in advance.
Prioritization scheme is: there is the well casing plug solid part of a diameter greater than filter pipe portion external diameter at the middle part of well casing plug, has some plug through holes outside well casing plug solid part.
Described well casing plug is a working of plastics.
The utility model has following characteristics and progress:
Filter pipe of the present utility model portion is provided with bar shape trench hole, has to be difficult for stopping up and the drainage good effectiveness; The well casing plug that filter pipe portion end connects makes well casing be easy to location and installation, and when construct to the outer inserts of well casing outer ring slicing and filling well casing in well casing installation back, well casing is not shifted, and guarantees that inserts is filled evenly outside the well casing, and the well quality is made in raising; Cleaning maintenance to well casing after relief well builds up also is more prone to, and prolongs the application life of relief well.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is Fig. 1 vertical view;
A kind of relief well example schematic of Fig. 3 for adopting the utility model to build.
Among the figure, 10-backfill sand, 11-gutter, 12-steel deck-plate, 13-concrete pit shaft, the threeway of 14-steel, 15-fill concrete, 16-backfill silt particle, 17-riser pipe portion, 18-backfill coarse sand, 19-gravel filter material, 20-filter pipe portion, 21-water inlet slotted eye, 22-well casing plug, 23-well casing plug through hole, 24-well casing plug solid part.
The specific embodiment
With reference to figure 1 and Fig. 2, the utility model proposes a kind of pressure reducing well pipe, the filter pipe portion (20) that it includes superposed riser pipe portion (17) and is positioned at the bottom, bar shape trench hole (21) is dug by filter pipe portion (20) on tube wall, it is characterized in that: filter pipe portion (20) end is connected with a well casing plug (22), and the external profile diameter of this well casing plug (22) is suitable with the hole of digging a well in advance.
For the wellhole that adopts retaining wall technology excavation, the well casing plug has some through holes (23), and there is the well casing plug solid part (24) of a diameter greater than filter pipe portion (20) external diameter at the middle part of well casing plug (22).
The well casing of present embodiment is the PVC plastic pipe, and well casing plug (22) is a working of plastics.
In conjunction with reference to figure 3, Fig. 3 has provided a kind of relief well that adopts the utility model to build, it comprises aforesaid pressure reducing well pipe and outer inserts of well casing and wellhead assembly, during use, pressure reducing well pipe is hung in the wellhole of digging in advance, one end that will be connected with well casing plug (22) places at the bottom of the wellhole, fills outside its well casing inserts then outside well casing wellhole is enriched, and at the wellhole mouth wellhead assembly is installed at last.
In the present embodiment, the outer inserts of the well casing of the filter pipe portion 20 of pressure reducing well pipe is to meet the gravel filter material 19 that size grading requires, the outer inserts of well casing from the bottom up is respectively backfill coarse sand 18, backfill silt particle 16 and fill concrete 15 by the outer soil property variation of well, wellhead assembly comprises that riser pipe portion 17 upper ends of pressure reducing well pipe are connected with steel tee piece 14, tee piece 14 loam cake concrete pit shaft 13 and steel deck-plates 12, the side pipe of steel tee piece 14 connects gutter 11, the gutter 11 outer backfill sands 10 of filling out.
Claims (3)
1. pressure reducing well pipe, include superposed riser pipe portion (17) and be positioned at the filter pipe portion (20) of bottom, filter pipe portion (20) digs on tube wall bar shape trench hole (21), it is characterized in that: filter pipe portion (20) end is connected with a well casing plug (22), and the external profile diameter of this well casing plug (22) is suitable with the hole of digging a well in advance.
2. pressure reducing well pipe as claimed in claim 1 is characterized in that: there is the well casing plug solid part (24) of a diameter greater than filter pipe portion (20) external diameter at the middle part of well casing plug (22), has some through holes (23) outside well casing plug solid part (24).
3. pressure reducing well pipe as claimed in claim 1 or 2 is characterized in that: described well casing plug (22) is a working of plastics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202018724U CN201288320Y (en) | 2008-10-15 | 2008-10-15 | Relief well tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202018724U CN201288320Y (en) | 2008-10-15 | 2008-10-15 | Relief well tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201288320Y true CN201288320Y (en) | 2009-08-12 |
Family
ID=40979996
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202018724U Expired - Lifetime CN201288320Y (en) | 2008-10-15 | 2008-10-15 | Relief well tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201288320Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104452664A (en) * | 2014-10-27 | 2015-03-25 | 广东省源天工程公司 | Repair technology for drainage pressure reducing well |
-
2008
- 2008-10-15 CN CNU2008202018724U patent/CN201288320Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104452664A (en) * | 2014-10-27 | 2015-03-25 | 广东省源天工程公司 | Repair technology for drainage pressure reducing well |
| CN104452664B (en) * | 2014-10-27 | 2016-08-17 | 广东省源天工程有限公司 | Reduction by Drainage kill-job renovation technique |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090812 |