CN107859143A - A kind of new modified high polymer blind-ditch pipe - Google Patents
A kind of new modified high polymer blind-ditch pipe Download PDFInfo
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- CN107859143A CN107859143A CN201711072339.2A CN201711072339A CN107859143A CN 107859143 A CN107859143 A CN 107859143A CN 201711072339 A CN201711072339 A CN 201711072339A CN 107859143 A CN107859143 A CN 107859143A
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- filter core
- layer filter
- internal layer
- outer layer
- blind
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F3/00—Sewer pipe-line systems
- E03F3/04—Pipes or fittings specially adapted to sewers
- E03F3/043—Partitioned to allow more than one medium to flow through
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Hydrology & Water Resources (AREA)
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- Water Supply & Treatment (AREA)
- Sewage (AREA)
- Rigid Pipes And Flexible Pipes (AREA)
Abstract
The embodiment of the present application discloses a kind of new modified high polymer blind-ditch pipe, including outer layer filter core in fact, and the geotextiles being coated on the outside of outer layer filter core, internal layer filter core, outer layer filter core and geotextiles are cylinder tubular structure；Internal layer filter core is located at the inside of outer layer filter core；Bedding void is provided between internal layer filter core and outer layer filter core；The inside of internal layer filter core is provided with drainage channel；Drainage channel is the cavity structure of cylinder.A kind of new geotechnological plastic blind-ditch that the embodiment of the present application provides, due to being provided with bedding void between outer layer filter core and internal layer filter core, and internal layer filter core may move inside outer layer filter core, so that the position of bedding void can adjust according to actual conditions, when certain side displacement of new modified high polymer blind-ditch pipe increases, internal layer filter core is promoted to allocinesi while by internal layer filter core by the current of outer layer filter core, bedding void is set to be moved to current side, fail to discharge by bedding void by the current of internal layer filter core in time, improve drainage efficiency.
Description
Technical field
The invention relates to soil engineering drainage device field, more particularly to a kind of new modified high polymer blind-ditch pipe.
Background technology
The coarse materials such as the broken, gravel of filling that french drain refers to set in roadbed or ground and spread with the draining of inverted filter,
Intercept water covered conduit.French drain is called sewer, is a kind of subdrainage channel, to exclude underground water, lowering of watertable.Various blind
In ditch material, the shortcomings that plastic blind-ditch pipe overcomes traditional french drain, have surface percent opening high, collection is water-based good, and voidage is big, row
It is water-based good, it is pressure-resistant, crushing resistance is strong, it is flexible, adapt to soil deformation, good endurance is in light weight, it is easy for construction the advantages that, application
It is quite varied.
Plastic blind-ditch pipe is will to squeeze out filament by nozzle after thermoplastic synthetic resin heating fusing to stack together,
And the 3 D stereo porous material for forming its phase contact cementing.In main body outer wrapping geotextiles as filter membrane, there is porous rectangle,
Hollow, rectangular, porous circle, four kinds of structure types of hollow circular, there is sizes specification.It is external own using more than 20 years, extensively
It is general to be applied to tunnel antiseepage draining, the subgrade drainage of Rail Highway, embankment constructing on pliable foundation, retaining wall anti-filter, domatic and slope internal drainage, ground
The draining of lower building is moistureproof, and the integrate draining system on lawn, balcony garden integrate draining, sewage treatment plant and refuse landfill etc. are all kinds of
Engineering, by the popular welcome of engineering circles.
However, plastic blind-ditch pipe of the prior art, because its structure is fixed, local maximum displacement has higher limit, nothing
Method adapts to the requirement of various conditions, when under plastic blind-ditch surrounding aqueous amount different situations, the drainage efficiency of the larger side of water content
Low, draining is slow.
The content of the invention
This application provides a kind of new modified high polymer blind-ditch pipe, to solve prior art for surrounding environment water content
The problem of drainage efficiency is low under different conditions.
This application provides a kind of new modified high polymer blind-ditch pipe, including outer layer filter core, the outer layer filter core is coated on
The geotextiles in outside, internal layer filter core, wherein,
The outer layer filter core and the geotextiles are cylinder tubular structure；
The internal layer filter core is located at the inside of the outer layer filter core；
Bedding void is provided between the internal layer filter core and the outer layer filter core；
The inside of the internal layer filter core is provided with drainage channel；
The drainage channel is the cavity structure of cylinder.
Optionally, the internal layer filter core is cylinder tubular structure, and the external diameter of the internal layer filter core is filtered less than the outer layer
The internal diameter of core.
Optionally, the internal layer filter core is the cylinder tubular structure that outer surface is provided with some semi-circular recesses, described half
The inwall of circular groove and the outer layer filter core forms the bedding void.
Optionally, circumferencial direction of some semi-circular recesses along the internal layer filter core is uniformly distributed.
Optionally, the internal layer filter core is made up of multistage, is connected between adjacent inner layer filter core section by flexible pipe.
Optionally, the outer layer filter core and the internal layer filter core be intersected by a plurality of filament resin be wound it is vertical
Body network structure.
Optionally, the filament resin is high density polyethylene (HDPE) filament resin.
Optionally, the porosity of the internal layer filter core is more than the porosity of the outer layer filter core.
Optionally, the thickness of the outer layer filter core is 15-40mm.
Optionally, the thickness of the internal layer filter core is 10-20mm.
From above technology, this application provides a kind of new modified high polymer blind-ditch pipe, including outer layer filter core, cladding
Geotextiles on the outside of the outer layer filter core, internal layer filter core, wherein, the outer layer filter core and the geotextiles are cylindrical pipe
Shape structure；The internal layer filter core is located at the inside of the outer layer filter core；It is provided between the internal layer filter core and the outer layer filter core
Bedding void, the internal layer filter core can be movable in the outer layer filter core internal range；The inside of the internal layer filter core is provided with row
Aquaporin, for discharging the moisture by outer interior two layers of filter core；The drainage channel is the cavity structure of cylinder.The application is real
A kind of new modified high polymer blind-ditch pipe of example offer is applied, due to being set between the outer layer filter core and the internal layer filter core
Bedding void is stated, and the internal layer filter core may move inside the outer layer filter core so that the position of the bedding void can root
Adjusted according to actual conditions, when certain side displacement of Modified Polymer blind-ditch pipe increases, by the current of the outer layer filter core
By promoting the internal layer filter core bedding void is moved to current to allocinesi while the internal layer filter core
Side, fail to discharge by the bedding void by the current of the internal layer filter core in time, improve drainage efficiency.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme of the application, letter will be made to the required accompanying drawing used in embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without having to pay creative labor,
Other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of a kind of new modified structural representation of embodiment of high polymer blind-ditch pipe of the application；
Fig. 2 is a kind of a kind of cross-sectional structure schematic diagram of new modified embodiment of high polymer blind-ditch pipe of the application；
Fig. 3 is a kind of a kind of new modified disassembly diagram of embodiment of high polymer blind-ditch pipe of the application；
Fig. 4 is a kind of structural representation of new modified high polymer blind-ditch pipe another kind embodiment of the application；
Fig. 5 is a kind of structural representation of another embodiment of new modified high polymer blind-ditch pipe of the application；
Wherein, 100- geotextiles, 200- outer layer filter cores, 300- internal layer filter cores, 310- semi-circular recesses, 320- internal layer filter cores
Section, 330- flexible pipes, 400- bedding voids, 500- drainage channels.
Embodiment
Embodiment one
It is a kind of a kind of new modified structural representation of embodiment of high polymer blind-ditch pipe of the application referring to Fig. 1.
It is a kind of a kind of cross-sectional structure schematic diagram of new modified embodiment of high polymer blind-ditch pipe of the application referring to Fig. 2.
It is a kind of a kind of new modified disassembly diagram of embodiment of high polymer blind-ditch pipe of the application referring to Fig. 3.
From Fig. 1 to Fig. 3, a kind of new modified high polymer blind-ditch pipe of the embodiment of the present application offer, including outer layer filter
Core 200, the geotextiles 100 being coated on the outside of the outer layer filter core 200, internal layer filter core 300, wherein,
The outer layer filter core 200 and the geotextiles 100 are cylinder tubular structure；
The internal layer filter core 300 is located at the inside of the outer layer filter core 200；
Bedding void 400 is provided between the internal layer filter core 300 and the outer layer filter core 200；
The inside of the internal layer filter core 300 is provided with drainage channel 500；
The drainage channel 500 is the cavity structure of cylinder.
From above technical scheme, a kind of new modified high polymer blind-ditch pipe that the embodiment of the present application provides is including described
Outer layer filter core 200, the internal layer filter core 300 and the geotextiles 100, the function of each several part are described as follows：
Geotextiles 100：The geotextiles 100 are coated on the outer surface of the outer layer filter core 200, utilize its breathing freely well
Property and water penetration, make the current of soil layer around by entering inside french drain, effectively isolate soil particle, fine sand, small building stones etc.,
The stability for the engineering that conserves water and soil.
Outer layer filter core 200：The outer layer filter core 200 is cylinder tubular structure, has certain structural strength, prevents from changing
Property high polymer blind-ditch pipe is arranged in behind underground by the crimp of soil layer；Meanwhile the outer layer filter core 200 provides surrounding soil layer
In moisture enter Modified Polymer blind-ditch pipe passage.
Internal layer filter core 300：The internal layer filter core 300 is located at the inside of the outer layer filter core 200, and with the outer layer filter core
The bedding void 400 between 200 be present, the internal layer filter core 300 can be any mobile among the outer layer filter core 200；Institute
State the inside of internal layer filter core 300 and be provided with the drainage channel 500, the internal layer filter core 300 provides moisture from the outer layer filter core 200
Enter the function of the drainage channel 500.
Drainage channel 500：The water filtered through the outer layer filter core 200, the internal layer filter core 300 is through the drainage channel
500 collect simultaneously, because the drainage channel 500 is cylindrical cavity, utilize the gravity of water itself, it is ensured that moisture is rapid in order
Discharge.
Optionally, in the present embodiment, the internal layer filter core 300 is cylinder tubular structure, the internal layer filter core 300
External diameter is less than the internal diameter of the outer layer filter core 200.
Further, because the internal diameter of the outer layer filter core 200 is certain, external diameter and the layer of the internal layer filter core 300
Between the size in space 400 be inversely proportional.When the external diameter of the internal layer filter core 300 is smaller, the bedding void 400 is excessive, will lead
Cause the internal layer filter core 300 ineffective；Conversely, internal diameter of the external diameter of the internal layer filter core 300 close to the outer layer filter core 200
When, the bedding void 400 is too small, will cause the removable narrow space of the internal layer filter core, and drainage efficiency is low.The present embodiment
The middle external diameter by the internal layer filter core 300 is optimized for the 3/4 of the outer layer filter core 200.
From above technology, a kind of new modified high polymer blind-ditch pipe that the embodiment of the present application provides is in general
And operation principle in particular cases is respectively：
Generally.
Aqueous in soil layer is acted on by gravity flow, when reach be arranged in the plastic blind-ditch in soil layer in the present embodiment when, soil
The aqueous geotextiles filtering by way of one layer of outermost in layer, can in plastic blind-ditch by the water of geotextiles into plastic blind-ditch
There are two approach：First, drainage channel discharge is entered after passing sequentially through outer layer filter core, internal layer filter core；Second, pass sequentially through outer layer
Drainage channel discharge is entered after filter core, bedding void, internal layer filter core.
In particular cases.
When the amount of moisture entered from the filtering of Modified Polymer blind-ditch pipe peripheral direction is different, and certain side amount of moisture compared with
When big, this side it is aqueous after by outer layer filter core, it is impossible at once by internal layer filter core, including this part water, outer layer filter core
Between constantly collect, internal layer filter core is gradually moved to offside, at the same time, bedding void to the side move；In bedding void
In this portion of water on the one hand will be moved in bedding void to discharge direction, on the other hand moved to discharge direction
Drainage channel is entered by internal layer filter core successively simultaneously.
Optionally, the outer layer filter core 200 is to be intersected to wind shape by a plurality of filament resin with the internal layer filter core 300
Into space network.
Optionally, the filament resin is high density polyethylene (HDPE) filament resin.
Further, material for core uses high-density polyethylene resin, is because it has good heat resistance and resisted cold
Property, the temperature change being suitable in soil layer；It also has higher a rigidity and toughness, and mechanical strength is good, it is ensured that filter core has
Preferable intensity, the extruding of soil layer around is avoided to cause the deformation of plastic blind-ditch；In addition, this materials chemistry stability is good, in room
Under the conditions of temperature, insoluble in any organic solvent, acid and alkali resistance and the corrosion of various salts, ensure longer service life.
Further, anti-aging, anticorrosion will be added in the above-mentioned high-density polyethylene material with a variety of advantages to help
Agent, through melting, extruding, spinneret, the technique such as shaping, the stereochemical structure for the winding that intersects is formed, therebetween with drain aperture, tool
There is the features such as perforate density is big, compression strength is high.
In the present embodiment, the material of the outer layer filter core 200 and the internal layer filter core 300 can also be containing PE, PP,
The high molecular polymer of the multiple additives such as PVC, EVA, CB, BaSO4, fire retardant, age resister, reinforcing agent, it is blind to improve this
The heat resistance of sewer pipe, corrosion resistance, flexural fatigue resistance, chemical stability, anti-flammability, resilience, pliability, adhesion, thoroughly
The performances such as bright property, dissolubility, stress cracking resistance, impact and ageing resistance.
Optionally, the porosity of the internal layer filter core 300 is more than the porosity of the outer layer filter core 200.
Further, because the external diameter of the internal layer filter core 300 is less than the internal diameter of the outer layer filter core 200, the internal layer
The porosity of filter core 300 is more than the outer layer filter core 200, it is ensured that passes through the moisture of the internal layer filter core 300 in the unit interval
Equal to the outer layer filter core 200, reduce moisture and stagnate, ensure drainage efficiency.
Optionally, the thickness of the outer layer filter core 200 is 15-40mm.
Further, the thickness of the outer layer filter core 200 is blocked up, and drainage process will be caused slow, influence drainage efficiency；Separately
Outside, the outer layer filter core need to keep certain intensity, prevent crimp, therefore, the preferably described outer layer filter core 200 of the present embodiment
Thickness be 15-40mm.
Optionally, the thickness of the internal layer filter core 300 is 10-20mm.
Further, the thickness of internal layer filter core described in the present embodiment 300 is preferably 10-20mm, can accelerate moisture and pass through
The internal layer filter core 300, meanwhile, it is also beneficial to the internal layer filter core 300 and is moved in the outer layer filter core 200, makes the interlayer
Space 400 is faster moved at moisture accumulation.
As can be known from the above technical solutions, a kind of new modified high polymer blind-ditch pipe that the embodiment of the present application provides includes：Outside
Layer filter core 200, the geotextiles 100 being coated on the outside of the outer layer filter core 200, internal layer filter core 300, wherein, the outer layer filter core
200 and the geotextiles 100 are cylinder tubular structure；The internal layer filter core 300 is located at the interior of the outer layer filter core 200
Portion；Bedding void 400 is provided between the internal layer filter core 300 and the outer layer filter core 200；The inside of the internal layer filter core 300
Provided with drainage channel 500；The drainage channel 500 is the cavity structure of cylinder；The internal layer filter core 300 is cylinder tubulose
Structure, the external diameter of the internal layer filter core 300 are less than the internal diameter of the outer layer filter core 200.The french drain structure that the present embodiment provides is worked as
The amount of moisture entered from the filtering of plastic blind-ditch peripheral direction is different, and when certain side amount of moisture is larger, can be filtered by internal layer
Core is gradually moved to offside, and bedding void is moved to the side；This portion of water in bedding void on the one hand will be
Moved in bedding void to discharge direction, on the other hand entered successively by internal layer filter core while being moved to discharge direction and arranged
Aquaporin, the french drain of this structure effectively prevent the stagnation of moisture, make moisture shunting discharge, improve drainage efficiency.
Embodiment two
It is a kind of structural representation of new modified high polymer blind-ditch pipe another kind embodiment of the application referring to Fig. 4.
Optionally, the internal layer filter core 300 is the cylinder tubular structure that outer surface is provided with some semi-circular recesses 310,
The inwall of the semi-circular recesses 310 and the outer layer filter core 200 forms the bedding void 400.
Optionally, circumferencial direction of some semi-circular recesses 310 along the internal layer filter core 300 is uniformly distributed.
As shown in Figure 4, the difference of the application second embodiment and first embodiment is, outside the internal layer filter core 300
Surface is provided with some semi-circular recesses 310, and the outer rim of the internal layer filter core 300 is close to the inwall of the outer layer filter core 200, this
Apply for that the other structures of second embodiment are identical with first embodiment, will not be repeated here.
Specifically, internal diameter of the external diameter of the internal layer filter core 300 close to the outer layer filter core 200, it can be described outer
Axially rotated in layer filter core 200, the inwall of the semi-circular recesses 310 and the outer layer filter core 200 constitutes the interlayer
Space 400, in this implementation, the quantity of the bedding void 400 is identical with the quantity of the semi-circular recesses 310, it is necessary to illustrate
, the quantity of the bedding void 400 in the present embodiment is not limited to the quantity in accompanying drawing, can increase institute according to actual conditions
The quantity of bedding void 400 is stated, and is circumferentially uniformly arranged.
Further, the operation principle for the Modified Polymer blind-ditch pipe that the present embodiment provides is：
Generally.Operation principle in general is identical with first embodiment, is not repeating herein.
In particular cases.
When the amount of moisture entered from the filtering of Modified Polymer blind-ditch pipe peripheral direction is different, and certain side amount of moisture compared with
When big, this side it is aqueous after by outer layer filter core, due to relatively large by internal layer filter core resistance, this part water tends to
Collect to bedding void, now for internal layer filter core to that can rotate, bedding void is increasingly turned to moisture larger side；It is empty in interlayer
On the one hand this portion of water in gap will move in bedding void to discharge direction, on the other hand moved to discharge direction
While drainage channel is entered by internal layer filter core successively.
As can be known from the above technical solutions, a kind of new modified high polymer blind-ditch pipe that the embodiment of the present application provides includes：Outside
Layer filter core 200, the geotextiles 100 being coated on the outside of the outer layer filter core 200, internal layer filter core 300, wherein, the outer layer filter core
200 and the geotextiles 100 are cylinder tubular structure；The internal layer filter core 300 is located at the interior of the outer layer filter core 200
Portion；Bedding void 400 is provided between the internal layer filter core 300 and the outer layer filter core 200；The inside of the internal layer filter core 300
Provided with drainage channel 500；The drainage channel 500 is the cavity structure of cylinder；The internal layer filter core 300 is provided with for outer surface
The cylinder tubular structure of some semi-circular recesses 310, the inwall shape of the semi-circular recesses 310 and the outer layer filter core 200
Into the bedding void 400；Circumferencial direction of some semi-circular recesses 310 along the internal layer filter core 300 is uniformly distributed.This
The french drain structure that embodiment provides is different when the amount of moisture entered from the filtering of plastic blind-ditch peripheral direction, and certain side moisture
It when measuring larger, can circumferentially be rotated by internal layer filter core, bedding void is moved to the side；This part in bedding void
On the one hand moisture will move in bedding void to discharge direction, on the other hand pass through successively while being moved to discharge direction
Internal layer filter core enters drainage channel, and the french drain of this structure effectively prevent the stagnation of moisture, makes moisture shunting discharge, the row of improving
Water efficiency.
Embodiment three
It is a kind of structural representation of another embodiment of new modified high polymer blind-ditch pipe of the application referring to Fig. 5；
Optionally, the internal layer filter core 300 is made up of multistage, is connected between adjacent inner layer filter core section 320 by flexible pipe 330.
As shown in Figure 5, the difference of the application 3rd embodiment and first embodiment is, the internal layer filter core 300
Formed for discrete multiple internal layer filter core sections 320.Other structures in the present embodiment are identical with first embodiment, herein
Repeat no more.
Specifically, due to being connected between the two neighboring internal layer filter core section 320 by the flexible pipe 330, make two it is adjacent
The mutual motion of the internal layer filter core section 320 do not affected one another.Moisture accumulation at varying cross-section is in phase
During anti-both sides, the plastic blind-ditch that the present embodiment provides can also meet drainage requirement.
As can be known from the above technical solutions, a kind of new modified high polymer blind-ditch pipe that the embodiment of the present application provides includes：Outside
Layer filter core 200, the geotextiles 100 being coated on the outside of the outer layer filter core 200, internal layer filter core 300, wherein, the outer layer filter core
200 and the geotextiles 100 are cylinder tubular structure；The internal layer filter core 300 is located at the interior of the outer layer filter core 200
Portion；Bedding void 400 is provided between the internal layer filter core 300 and the outer layer filter core 200；The inside of the internal layer filter core 300
Provided with drainage channel 500；The drainage channel 500 is the cavity structure of cylinder；The internal layer filter core 300 is made up of multistage,
Connected between adjacent inner layer filter core section 320 by flexible pipe 330.The present embodiment provide Modified Polymer french drain tubular construction, when from
, can be by interior when plastic blind-ditch peripheral direction filters the amount of moisture difference at the amount of moisture difference entered and varying cross-section
Layer filter core makes bedding void be moved to the side while gradually movement to offside；This portion of water one side in bedding void
Face will move in bedding void to discharge direction, on the other hand successively by internal layer filter core while being moved to discharge direction
Into drainage channel, the french drain of this structure effectively prevent the stagnation of moisture, makes moisture shunting discharge, improves drainage efficiency.
Those skilled in the art will readily occur to the present invention its after considering specification and putting into practice invention disclosed herein
Its embodiment.The application be intended to the present invention any modification, purposes or adaptations, these modifications, purposes or
Person's adaptations follow the general principle of the present invention and including undocumented common knowledges in the art of the invention
Or conventional techniques.Description and embodiments are considered only as exemplary, and true scope and spirit of the invention are by following
Claim is pointed out.
It should be appreciated that the invention is not limited in the precision architecture for being described above and being shown in the drawings, and
And various modifications and changes can be being carried out without departing from the scope.The scope of the present invention is only limited by appended claim.
Claims (10)
1. a kind of new modified high polymer blind-ditch pipe, it is characterised in that including outer layer filter core (200), be coated on the outer layer filter
Geotextiles (100) on the outside of core (200), internal layer filter core (300), wherein,
The outer layer filter core (200) and the geotextiles (100) are cylinder tubular structure；
The internal layer filter core (300) is located at the inside of the outer layer filter core (200)；
Bedding void (400) is provided between the internal layer filter core (300) and the outer layer filter core (200)；
The inside of the internal layer filter core (300) is provided with drainage channel (500)；
The drainage channel (500) is the cavity structure of cylinder.
A kind of 2. new modified high polymer blind-ditch pipe according to claim 1, it is characterised in that the internal layer filter core
(300) it is cylinder tubular structure, the external diameter of the internal layer filter core (300) is less than the internal diameter of the outer layer filter core (200).
A kind of 3. new modified high polymer blind-ditch pipe according to claim 1, it is characterised in that the internal layer filter core
(300) the cylinder tubular structure of some semi-circular recesses (310), the semi-circular recesses (310) and institute are provided with for outer surface
The inwall for stating outer layer filter core (200) forms the bedding void (400).
4. a kind of new modified high polymer blind-ditch pipe according to claim 3, it is characterised in that some semicircles are recessed
Circumferencial direction of the groove (310) along the internal layer filter core (300) is uniformly distributed.
A kind of 5. new modified high polymer blind-ditch pipe according to claim 2, it is characterised in that the internal layer filter core
(300) it is made up of multistage, is connected between adjacent inner layer filter core section (320) by flexible pipe (330).
A kind of 6. new modified high polymer blind-ditch pipe according to claim 2,4 or 5, it is characterised in that the outer layer filter
Core (200) and the internal layer filter core (300) are the space networks being wound that intersected by a plurality of filament resin.
7. a kind of new modified high polymer blind-ditch pipe according to claim 6, it is characterised in that the filament resin is height
Density polyethylene filament resin.
A kind of 8. new modified high polymer blind-ditch pipe according to claim 7, it is characterised in that the internal layer filter core
(300) porosity is more than the porosity of the outer layer filter core (200).
A kind of 9. new modified high polymer blind-ditch pipe according to claim 8, it is characterised in that the outer layer filter core
(200) thickness is 40-50mm.
A kind of 10. new modified high polymer blind-ditch pipe according to claim 9, it is characterised in that the internal layer filter core
(300) thickness is 10-20mm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711072339.2A CN107859143B (en) | 2017-11-03 | 2017-11-03 | Modified high polymer blind ditch pipe |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711072339.2A CN107859143B (en) | 2017-11-03 | 2017-11-03 | Modified high polymer blind ditch pipe |
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| CN107859143A true CN107859143A (en) | 2018-03-30 |
| CN107859143B CN107859143B (en) | 2020-07-14 |
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| CN201711072339.2A Active CN107859143B (en) | 2017-11-03 | 2017-11-03 | Modified high polymer blind ditch pipe |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109853708A (en) * | 2019-03-20 | 2019-06-07 | 石亮亮 | Integrated combined-type pipeline |
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| US20160018039A1 (en) * | 2014-07-16 | 2016-01-21 | Mr. Anders Roland Ekstrand | Water Distribution and Wastewater Collection Systems for Arctic Environments |
| CN206512733U (en) * | 2016-12-27 | 2017-09-22 | 西安理工大学 | A kind of two-layer equation drainage arrangement |
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| CN109853708A (en) * | 2019-03-20 | 2019-06-07 | 石亮亮 | Integrated combined-type pipeline |
| CN109853708B (en) * | 2019-03-20 | 2020-07-24 | 广东雄辉市政公用工程有限公司 | Integrated combined pipeline |
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