CN201330402Y - Pipe segment inner pressure type decompression well pipe - Google Patents
Pipe segment inner pressure type decompression well pipe Download PDFInfo
- Publication number
- CN201330402Y CN201330402Y CNU2008202378429U CN200820237842U CN201330402Y CN 201330402 Y CN201330402 Y CN 201330402Y CN U2008202378429 U CNU2008202378429 U CN U2008202378429U CN 200820237842 U CN200820237842 U CN 200820237842U CN 201330402 Y CN201330402 Y CN 201330402Y
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- pipe
- transmission shaft
- jurisdiction
- support connecting
- connecting rod
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Abstract
The utility model relates to a pipe segment inner pressure type decompression well pipe, which consists of a porous outer pipe (1), a filtering layer (2) and an inner pipe (3). The inner pipe (3) adopts an annular inner supporting pipe type structure which is formed by four separate pipe segments (6); the center of the inner pipe (3) is provided with a support connecting rod (4) and a transmission shaft (5); the support connecting rod (4) comprises an upper layer, a middle layer and a lower layer; each layer comprises four support connecting rods; one end of the support connecting rod (4) is connected with the pipe segments (6); and the other end of the support connecting rod (4) is connected with the transmission shaft (5). When the transmission shaft (5) is lifted upwards, the support connecting rod (4) shrinks; when the transmission shaft (5) is pressed down, the filtering layer (2) which is sleeved on the periphery of the pipe segments clings to the inner wall of the outer pipe (1); and when the filtering layer (2) is blocked, only the transmission shaft (5) is required to be lifted, the support connecting rod (4) drives the pipe segments (6) to shrink, and then the filtering layer (2) can be drawn out for replacement. The utility model has the advantages of reasonable structure, significant decompression effect, clogging prevention, convenient replacement of the filter core, and long service life.
Description
One, technical field
The utility model is a kind of section of jurisdiction inner pressed pressure reducing well pipe, specifically relates to reduce the section of jurisdiction inner pressed pressure reducing well pipe of dykes and dams base low layer seepage water pressure, relates to the dykes and dams Foundation Design.
Two, background technology
A large amount of dykes and dams destroy the example survey data and show, because the disaster that seepage flow causes accounts for whole accident and gets about 40%, the piping of the disaster form of expression such as dike (dam) body, dike (dam) base, stream soil, crack, collapse on the bank etc., and wherein piping, stream soil directly are because the big institute of osmotic pressure, osmotic gradient causes, and failure by piping is the most outstanding.
People have created the control techniques measure of oozing of a lot of effective antiseepages, drainage and step-down by seepage flow control theory, Study on Technology in the long-term practice of hydraulic engineering, and the osmotic pressure that reduces dykes and dams basis and downstream is to guarantee the safety of engineering.Wherein when dike (dam) base covering layer top down be aquitard, bottom when being the binary of highly permeable layer or polynary soil structure, adopt the basic osmotic stability of relief well technology control more.Adopt not only economy but also can reduce the uplift pressure in the basic downstream of dike (dam) effectively of relief well technology, therefore many dike sections downstream is equipped with relief well along the Yangtze River.But a large amount of practical situations show, because originally there is defective in traditional relief well in design, structure, materials and management, make the efficient of relief well and application life not satisfactory.One of modal failure cause of relief well is the filtrate generation silting of filling in the well, and whether this silting takes place mainly to see whether filter material grating and levee foundation soil particle mate, if filtrate and protected native matching relationship are bad, silting just takes place easily how much.Also the mineralogical composition in some ground stratum is dissolved in the water, and produces new compound between soluble salt that contains in the underground water that flows and the various chemical substance under the certain environment temperature, is deposited in the filtering layer, just may produce chemical silting.At some low flow velocity, under the water environment of oxygen rareness, also can produce new biological microorganism, its metabolin can be with the seepage channel silting, as the metabolin of eating the anaerobic bacteria of iron, food sulphur just found once in the water-supply-pipe of Lion Rock tailing dam that this sometimes biology also can quicken chemical silting.See at most in the dam construction at present, the most incident still how much siltings, it reduces the relief well effect even lost efficacy, the use that has in the practical application 1 year was perhaps also just lost efficacy (relief well has moved for many years also to have minority to build preferably) in two to three years.Because relief well is darker, by silting filter material be difficult to even can't take out, also once attempted the water under high pressure backwash, but effect is unsatisfactory, usually can only let alone to lose efficacy.For engineering safety, have to reconstruct, so not only cause the dam construction expense to improve greatly, and (dam) engineering is very dangerous to make dike again.In order to solve the relief well long-time running easily by the contradiction of silting, the utility model proposes the pressure reducing well pipe new structure, attempt by rational in infrastructure, be easy to more advantages such as renew cartridge, cost are low, easy construction and transform traditional relief well.
Three, summary of the invention
Advantages such as the purpose of this utility model is to provide a kind of section of jurisdiction inner pressed pressure reducing well pipe, and this well casing has the interior tube side of lifting just, and it is easy to change the obstruction filtration beds, seeps water soon, and effect of easing stress is obvious.
Section of jurisdiction inner pressed pressure reducing well pipe, by outer tube, interior pipe, filtration beds is formed, the annular internal brace tubular structure that pipe is made up of four identical sections of jurisdiction of separating in it is characterized in that, the interior central authorities of managing are provided with support link and force transmission shaft, on support link is divided, in, following three layers, every layer of four connecting rod, hinge is equipped with at two ends four support link, one end hinge is separately fixed on four sections of jurisdiction, and other end hinge is separately fixed on the force transmission shaft, and filtration beds is placed between interior pipe and the outer tube, be close on the outer tube wall, have aperture on outer tube and the section of jurisdiction, its aperture is 20mm, and pitch-row is 80mm.
The basic structure of section of jurisdiction inner pressed pressure reducing well pipe:
This well casing is formed by managing in outer tube+geotextile filtration beds+inner support pipe type.
For pipe in making shrinks flexibly, four identical sections of jurisdiction interior pipe being changed into separation assemble the ring-like inner bearing type separator tube chip architecture of formation, are drilled with aperture on the section of jurisdiction, and the aperture is 20mm, pitch of holes 80mm, and interior pipe central authorities are provided with support link and force transmission shaft.Carry on the force transmission shaft and can draw support link in, four sections of jurisdiction constitute the interior pipe that diameter is less, can be enclosed within the geotextile filtration beds periphery of section of jurisdiction this moment, together insert in the outer tube, after interior pipe puts in place, by force transmission shaft to pressing down, the section of jurisdiction turgor pressure is strutted, support link props up the section of jurisdiction, and outer tube wall is pressed to the geotextile filtration beds in the section of jurisdiction, but well casing this moment operate as normal just.If filtration beds stops up, during the infiltration weak effect, as long as promote force transmission shaft, draw support link and section of jurisdiction in, just can put forward interior pipe, new filtration beds is enclosed within the periphery of section of jurisdiction, insert outer tube again, press down force transmission shaft, can press to outer tube wall to filtration beds by the section of jurisdiction, but just operate as normal of well casing.
The utility model evidence, this well casing have promote in tube side just, it is easy to change filtration beds, infiltration is fast, is difficult for silting, effect of easing stress is good, and parts can suitability for industrialized production, has saved spending greatly.
Four, description of drawings
Fig. 1 separates the schematic diagram of pipe in the ring-like inner support pipe sheet type structure of forming the section of jurisdiction;
The sectional drawing of Fig. 2 section of jurisdiction inner pressed pressure reducing well pipe;
The schematic diagram of Fig. 3 section of jurisdiction inner pressed pressure reducing well pipe;
Reference numeral: pipe, 4 support link, 5 force transmission shafts, 6 sections of jurisdiction in 1 outer tube, 2 filtration bedss, 3.
Five, the specific embodiment
Outer tube is a PVC porous floral tube, and internal diameter is 100mm, and the aperture of aperture is 20mm on the outer tube, pitch of holes 80mm, the long 4m of outer tube single-unit inserts outer tube in the native hole of having accomplished fluently, interior external diameter of pipe is 95mm, and long 4m cuts open into pipe in the PVC quartering and removes the edge slightly, get four sections of jurisdiction, be drilled with aperture on the section of jurisdiction, the aperture is 20mm, pitch of holes 80mm, the interior central authorities of managing are provided with support link and the force transmission shaft that the PVC material is made,
Supporting rod divides the upper, middle and lower layer, 4 every layer, respectively with the hinge at support link two ends, one end is welded on the section of jurisdiction, and the other end is welded on the force transmission shaft, the geotextile filtration beds of making is enclosed within the periphery of section of jurisdiction, push in the outer tube with force transmission shaft, when force transmission shaft presses down, by support link the section of jurisdiction is opened, filtration beds is pressed on the outer tube wall.When needs are changed filtration beds,, just can take out the ring-like interior pipe that the separator tube sheet is formed as long as force transmission shaft is upwards put forward receipts, new filtration beds is enclosed within the section of jurisdiction periphery inserts in the outer tube, press down force transmission shaft, just open the section of jurisdiction, filtration beds is pressed on outer tube wall, and this moment, well casing just entered normal operating conditions.
Claims (2)
1. section of jurisdiction inner pressed pressure reducing well pipe, form by outer tube (1), filtration beds (2), interior pipe (3), it is characterized in that interior pipe (3) is the annular internal brace tubular structure that is made of four sections of jurisdiction (6) of separating, central authorities at interior pipe (3) are provided with support link (4) and force transmission shaft (5), support link (4) is divided upper, middle and lower-ranking, every layer of four connecting rod, hinge is equipped with at two ends in four support link (4), one end hinge is welded on respectively on four sections of jurisdiction (6), and other end hinge is welded on the force transmission shaft (5).
2. section of jurisdiction according to claim 1 inner pressed pressure reducing well pipe is characterized in that all having aperture on described outer tube (1) and section of jurisdiction (6), and its aperture is 20mm, and pitch-row is 80mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202378429U CN201330402Y (en) | 2008-12-19 | 2008-12-19 | Pipe segment inner pressure type decompression well pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008202378429U CN201330402Y (en) | 2008-12-19 | 2008-12-19 | Pipe segment inner pressure type decompression well pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201330402Y true CN201330402Y (en) | 2009-10-21 |
Family
ID=41223780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008202378429U Expired - Fee Related CN201330402Y (en) | 2008-12-19 | 2008-12-19 | Pipe segment inner pressure type decompression well pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201330402Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162335A (en) * | 2011-02-10 | 2011-08-24 | 中煤矿山建设集团有限责任公司 | A hole-forming method of drilling through an underground structure in an aquifer sand layer from the ground |
| CN102400713A (en) * | 2011-10-24 | 2012-04-04 | 广东华隧建设股份有限公司 | Method for auxiliary construction of water falling in tunnel by communicated channel |
| CN108252293A (en) * | 2018-01-22 | 2018-07-06 | 河海大学 | Can dredging in situ drainage pipe and its application method |
| CN108252278A (en) * | 2018-02-01 | 2018-07-06 | 河海大学 | The row of replaceable filtration core oozes device and filtration core replacing options in Tailings Dam |
-
2008
- 2008-12-19 CN CNU2008202378429U patent/CN201330402Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102162335A (en) * | 2011-02-10 | 2011-08-24 | 中煤矿山建设集团有限责任公司 | A hole-forming method of drilling through an underground structure in an aquifer sand layer from the ground |
| CN102400713A (en) * | 2011-10-24 | 2012-04-04 | 广东华隧建设股份有限公司 | Method for auxiliary construction of water falling in tunnel by communicated channel |
| CN108252293A (en) * | 2018-01-22 | 2018-07-06 | 河海大学 | Can dredging in situ drainage pipe and its application method |
| CN108252278A (en) * | 2018-02-01 | 2018-07-06 | 河海大学 | The row of replaceable filtration core oozes device and filtration core replacing options in Tailings Dam |
| CN108252278B (en) * | 2018-02-01 | 2019-09-10 | 河海大学 | The row of replaceable filtration core seeps device and filtration core replacing options in Tailings Dam |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20091021 Termination date: 20121219 |