CN105586859B - Integral irrigation and drainage pipe system of saline-alkali soil farmland and construction method - Google Patents

Integral irrigation and drainage pipe system of saline-alkali soil farmland and construction method Download PDF

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Publication number
CN105586859B
CN105586859B CN201610103549.2A CN201610103549A CN105586859B CN 105586859 B CN105586859 B CN 105586859B CN 201610103549 A CN201610103549 A CN 201610103549A CN 105586859 B CN105586859 B CN 105586859B
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China
Prior art keywords
anchor block
precast concrete
threeway
irrigation
water
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Expired - Fee Related
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CN201610103549.2A
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CN105586859A (en
Inventor
马移军
黄乾
吕宁江
薛雁
郑强
金丽
夏海波
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Water Resources Research Institute of Shandong Province
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Water Resources Research Institute of Shandong Province
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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02BHYDRAULIC ENGINEERING
    • E02B13/00Irrigation ditches, i.e. gravity flow, open channel water distribution systems
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02BHYDRAULIC ENGINEERING
    • E02B11/00Drainage of soil, e.g. for agricultural purposes
    • E02B11/005Drainage conduits
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G25/00Watering gardens, fields, sports grounds or the like

Abstract

The invention relates to an integral irrigation and drainage pipe system of a saline-alkali soil farmland. The system is characterized in that an irrigation pipe (3) is inserted in a drainage pipe (2) to integrate a main pipe of integral farmland drainage water collection pipes and water transmission pipes; prefabricated concrete four-way anchor blocks (4) are arranged on the main pipe in a segmented manner; the other two opposite ends of the prefabricated concrete four-way anchor blocks (4) are respectively in butt joint with drainage pipes (2) of branch pipes and irrigation pipes (3) to integrate branch pipes of integral farmland drainage water collection pipe and water transmission pipe; prefabricated concrete three-way anchor blocks (6) are arranged on all the branch pipes at intervals; water supply vertical pipes (21) are arranged in water supply vertical pipe passing holes (1) of the prefabricated concrete three-way anchor blocks (6); and hydrants (5) are mounted on the water supply vertical pipes (21). The system realizes sleeving installation of two sets of pipe networks, improves the use coefficient of irrigation water, is better in drainage and dirt reduction effects, and is better in ecological and economical benefits in improvement of salinization farmlands.

Description

Salt-soda soil farmland integration irrigation and drainage tubing and construction method
Technical field
The invention belongs to Agricultural Water-Soil Engineering technical field and technical field of land improvement, more particularly to a kind of salt-soda soil agriculture Field integration irrigation and drainage tubing and construction method.
Background technology
In alkaline land improving and salt-soda soil farmland water conservancy works are built, for crop irrigation, pressure salt, draining drop are irrigated Stain, generally requires to bury respectively and irrigates pressure pipeline, closed drain(Ooze pipe).Irrigation conduit is used to irrigating and pressing salt, drain pipe Road is used for except subsoil water, reduces too high level of ground water.Irrigation conduit is different with tubing used by drainage pipeline, buried depth different, pipe Footpath is different(Drainage pipeline caliber is big), buried depth it is not equal, irrigation conduit belongs to pressure pipe, and drainage pipeline belongs to non pressure pipe, causes Irrigation pipe system and sewerage system are separated arrangement, run separate.Field channel density is larger, both have impact on cultivated Make, increased pipe canal digging amount and occupation of land again, excavation drainage pipeline irrigation canals and ditches are deeper during construction, also easily reveal existing irrigation pipe It is bad.
The content of the invention
The present invention is according to the in esse problem of salt-soda soil farm field irrigation drainage, it is proposed that a kind of brand-new irrigation and drainage integration The design of tubing and construction method.Realize that the technical solution used in the present invention is:A kind of salt-soda soil farmland one Change irrigation and drainage tubing, include iirigation water source, drainage pipeline, irrigation conduit, drain valve and gutter, its feature exists In:Irrigation conduit is installed in drainage pipeline, is provided with permeable support ring, in permeable support ring between irrigation conduit and drainage pipeline Support ring permeable hole is provided with, described drainage pipeline carries water seepage hole, is integrated into draining collector pipe and the water delivery of farmland integration The main pipeline of pipe;Subsection setup precast concrete four-way anchor block on main pipeline, precast concrete four-way anchor block, is inside provided with four-way Hole and four-way exit orifice, the drainage pipeline and irrigation conduit on main pipeline are docked at opposite end on precast concrete four-way anchor block In four-way exit orifice and four-way endoporus, on precast concrete four-way anchor block, branch pipe(tube) drainage pipeline is docked at two ends relative in addition respectively And irrigation conduit, it is integrated into the branch pipe(tube) of the draining collector pipe and water-supply-pipe of farmland integration;Interval setting on the branch pipe(tube) Precast concrete threeway anchor block, is provided with threeway endoporus and threeway exit orifice, drainage pipeline and irrigation in precast concrete threeway anchor block Pipeline is docked on precast concrete threeway anchor block in the threeway exit orifice and threeway endoporus of opposite end, precast concrete threeway town Another branch road of pier is provided with water supply riser by hole, water supply riser by arranging water supply riser on hole, install on water supply riser to Water bolt.Described permeable support ring is roller shape, and the two-wheeled of roller relative is provided with support ring permeable hole along upper.Described is prefabricated mixed Solidifying soil four-way anchor block is made up of four-way component upper body and precast concrete four-way anchor block lower body.Described precast concrete threeway town Pier is made up of precast concrete threeway anchor block upper body and precast concrete threeway anchor block lower body;It is easily installed construction.Described filling Irrigate pipeline to make using PVC or PE tubing;Described drainage pipeline is made using the corrugated tube or permeable concrete pipe for having seepage hole. Irrigation conduit and drainage pipeline are nested together, and only take up the space in drainage pipeline.By supporting permeable support ring, prefabricated mixed The adnexa such as solidifying soil feedwater threeway component, point water threeway, four-way component, hydrant, realizes that a set of tubing realizes salt-soda soil agriculture Crop irrigation, big hydraulic pressure salt, the composite request of draining drop stain.
Irrigation conduit of the present invention is placed in the drainage pipeline with water seepage hole, by permeable support ring, precast concrete Four-way anchor block, precast concrete threeway anchor block, hydrant, drain valve etc. realize irrigation and drainage integrated design.It is defeated with seeping water In the drainage pipeline of water function, the irrigation conduit for being mounted with permeable support ring is inserted, permeable support ring can be solid by irrigation conduit In the middle of drainage pipeline, the space between irrigation conduit outer wall and drainage pipeline inwall is used to accommodate soil infiltration, by saturating Water support ring crosses water flow further downstream.When irrigation major trunk roads are needed to Zhi Gandao point of water, for the ease of connection, it is specially provided with pre- Concrete four-way anchor block processed and precast concrete threeway anchor block, can both play a part of anchor block and fix drainage pipeline and irrigation pipe Road, can pass through internal osculum downstream draining, again it is achieved thereby that the method that a pipe alley lays dual-purpose pipeline.
The present invention will irrigate low pressure pipeline system and the integrated arrangement of sewerage system, realize that two sleeve pipe nets are mounted in one Rise, be embedded in same pipe alley, can effectively reduce salt-soda soil channel density, reduce engineering volume of earthwork, Economization on land; Investment is advantageously reduced, is improved and is irrigated and drainage effect;(3)Pipeline trench path is easily tracked, once damage easily send out Existing problem;Water efficiency of irrigation improves, and draining drop stain effect more preferably, has preferably ecological, Jing to salinized farmland improvement Ji benefit.
Description of the drawings
Fig. 1 is that salt-soda soil fills row's integral tube net system schematic diagram;
Fig. 2 is the row's of filling integrated pipeline water delivery drainage works schematic diagram;
Fig. 3 is permeable support ring schematic diagram in drain pipe;
Fig. 4 is precast concrete threeway anchor block structural representation;
Cross section structure diagrams of the Fig. 5 for precast concrete threeway anchor block;
Fig. 6 is precast concrete four-way anchor block structural representation;
Fig. 7 buries schematic diagram to fill discharge pipe.
In figure:1st, iirigation water source, 2, drainage pipeline, 3, irrigation conduit, 4, precast concrete four-way anchor block, 5, hydrant, 6th, precast concrete threeway anchor block, 7, permeable support ring, 8, support ring permeable hole, 9, four-way endoporus, 10. four-way exit orifice, 11, Water supply riser by hole, 12, precast concrete four-way anchor block upper body, 13, precast concrete four-way anchor block lower body, 14, geotextiles, 15th, middle sand pervious bed, 16, undisturbed soil, 17, drain valve, 18, gutter, 19, threeway endoporus, 20, threeway exit orifice, 21, feedwater it is vertical Pipe, 22, precast concrete threeway anchor block upper body, 23, precast concrete four-way anchor block lower body.
Specific embodiment
Referring to the drawings, a kind of salt-soda soil farmland integration irrigation and drainage tubing, includes iirigation water source 1, drain pipe Road 2, irrigation conduit 3, drain valve 17 and gutter 18, it is characterised in that:Irrigation conduit 3 is installed in drainage pipeline 2, irrigation pipe Permeable support ring 7 is provided between road 3 and drainage pipeline 2, permeable support ring 7 is provided with support ring permeable hole 8, described drain pipe Road 2 carries water seepage hole, is integrated into the main pipeline of the draining collector pipe and water-supply-pipe of farmland integration;On main pipeline, subsection setup is pre- Concrete four-way anchor block 4 processed, is provided with four-way endoporus 9 and four-way exit orifice 10, the row on main pipeline in precast concrete four-way anchor block 4 Waterpipe 2 and irrigation conduit 3 are docked at the four-way exit orifice 10 and four-way endoporus 9 of opposite end on precast concrete four-way anchor block 4 On, on precast concrete four-way anchor block 4, two ends relative in addition dock branch pipe(tube) drainage pipeline 2 and irrigation conduit 3 respectively, integrated For the branch pipe(tube) of the draining collector pipe and water-supply-pipe of farmland integration;Interval setting precast concrete threeway town on the branch pipe(tube) Pier 6, is provided with threeway endoporus 19 and threeway exit orifice 20 in precast concrete threeway anchor block 6, and drainage pipeline 2 and irrigation conduit 3 are docked On the precast concrete threeway anchor block 6 in the threeway exit orifice 20 and threeway endoporus 19 of opposite end, precast concrete threeway anchor block 6 Another branch road be provided with water supply riser by hole 11, water supply riser by water supply riser 21 is arranged on hole 11, on water supply riser 21 Hydrant 5 is installed.Described permeable support ring 7 is roller shape, and the two-wheeled of roller relative is provided with support ring permeable hole 8 along upper.Institute The precast concrete four-way anchor block stated is by 13 structure of precast concrete four-way anchor block upper body 12 and precast concrete four-way anchor block lower body Into.Described precast concrete threeway anchor block 6 is by under precast concrete threeway anchor block upper body 22 and precast concrete threeway anchor block Body 23 is constituted;It is easily installed construction.Described irrigation conduit 3 is made using PVC or PE tubing;Described drainage pipeline 2 is utilized The corrugated tube or permeable concrete pipe for having seepage hole is made.Irrigation conduit 3 and drainage pipeline 2 are nested together, and only take up drainage pipeline In space.By supporting permeable support ring, precast concrete feedwater threeway component, point water threeway, four-way component, hydrant Deng adnexa, realize that a set of tubing realizes salt-soda soil crop irrigation, big hydraulic pressure salt, the composite request of draining drop stain.
Irrigation conduit of the present invention 3 is placed in the drainage pipeline 2 with water seepage hole, by permeable support ring 7, concrete Native four-way anchor block 4, precast concrete threeway anchor block 6, hydrant 5, drain valve 17 etc. realize irrigation and drainage integrated design.Have In the drainage pipeline 2 of infiltration architecture, the irrigation conduit for being mounted with permeable support ring 7 is inserted, permeable support ring 7 will can be filled Irrigate pipeline 3 to be fixed in the middle of drainage pipeline 2, the space between 2 inwall of 3 outer wall of irrigation conduit and drainage pipeline is used to accommodate soil Infiltration, crosses water flow further downstream by permeable support ring 7.When irrigation main pipeline is needed to branch pipe(tube) point water, for the ease of connection, Precast concrete four-way anchor block 4 and precast concrete threeway anchor block 6 are specially provided with, can both have been played a part of anchor block and fixed row Waterpipe 2 and irrigation conduit 3, can pass through internal osculum downstream draining again, it is achieved thereby that a pipe alley laying The method of dual-purpose pipeline.The permeability rate of described drainage pipeline 2 requires processing osculum according to general closed drainage, commonly reaches More than the 20% of surface area, typically using corrugated tube, pipe diameter preferably adopts more than 160mm.Irrigation conduit 3 typically adopts standard PVC pipeline, a pipe diameter 1-2 centimetre typically little than closed drain.To enable irrigation conduit to be easily installed in drainage pipeline, 2 general two normal diameters big compared with 3 diameter of irrigation conduit of drainage pipeline(General standard irrigation conduit caliber be φ 110, φ 125, φ 160 and above caliber, then corresponding drainage pipe diameter is φ 160, φ 180, φ 200 etc., is incremented by upwards successively).Concrete Native four-way anchor block 4 and precast concrete threeway anchor block 6, from unlike general pipeline anchor block, anchor block had both played fixed -piping, had prevented Only pipeline movement effect, the four-way component and threeway component of irrigation conduit are provided with which in, serve placement irrigation threeway, Four-way pipe fitting, connecting pipe, by the effect of draining.Anchor block is divided into lower body, convenient to place wherein four-way and threeway, endoporus Footpath can be in close contact with threeway is irrigated.Have two diameters it is different by hole, endoporus passes through irrigation conduit, and outer boring ratio is external up and down The recessed 3cm-5cm in surface, diameter are identical with closed drain external diameter, make drainage pipeline just be stuck in anchor block outer radius, and by pre- The osculum for first arranging is by drainage in downstream.
A kind of construction method of salt-soda soil farmland integration irrigation and drainage tubing, it is characterised in that:Construction method is such as Under:
First, Sewer Line Distribution spacing and buried depth, drainage pipeline 2 are calculated according to Underground Water in Salinization Area buried depth and drainage requirement Within 1.8m, drainage pipeline 2 is punching corrugated tube or permeable concrete pipe, 2 external application geotextiles of drainage pipeline, 14 He to buried depth The middle sand pervious bed 15 of 20cm thickness, as loaded filter, backfills for undisturbed soil 16 on middle sand pervious bed 15, the gradient of pipe laying Decline according to draining water (flow) direction, arm gradient is slightly larger, supervisor's gradient is slightly smaller, gradient is buried in the range of 1/2000-1/500 Depth is required according to level of ground water and drainage;Irrigation conduit 3 is not affected by the depth of burying;From after water lift at iirigation water source 1, Jing Irrigation conduit 3 carries out water conveyance irrigation, and pipeline does not increase the loss of flood peak because of buried depth;
2nd, when irrigation conduit 3 is sleeved in drainage pipeline 2, permeable support ring 7 is enclosed within outside irrigation conduit 3, the row of piercing into In waterpipe 2, when draining in drainage pipeline 2, by the downstream pipeline flowing of permeable support ring permeable hole 8;
3rd, according to requirement is irrigated, 50-100m is spaced on main pipeline one precast concrete four-way anchor block 4 is set, pre- Branch pipe(tube) is built on concrete four-way anchor block processed 4, one precast concrete threeway anchor block 6 is set every 50-100m on branch pipe(tube), Hydrant 5 is installed in the feedwater of precast concrete threeway anchor block 6 by water supply riser 21 is arranged on hole 11, on water supply riser 21, is given The pattern unrestricted choice extensive stock model of water bolt 5, irrigation conduit water delivery meet the requirement of big hydraulic pressure salt simultaneously;Irrigation conduit Water supply riser 21 is installed in advance, and above ground level, after irrigation canals and ditches landfill is finished, installs hydrant 5;
When irrigation supervisor the 4th, is run into arm point water or branch drain to the situation of supervisor's charge for remittance, or need fixing pipe During road, it is attached using precast concrete threeway anchor block 6 or precast concrete four-way anchor block 4,2 socket joint of drainage pipeline is in four-way At exit orifice 10 or threeway exit orifice 20,3 socket joint of irrigation conduit is at four-way endoporus 9 or threeway endoporus 19;
5th, drainage pipeline 2 is eventually leading to draining shaft or gutter 18, while using the drain valve of 3 end of irrigation conduit 17 drainings in the winter time;The drain valve 17 and drainage pipeline 2 of irrigation conduit 3 is combined, and drain pipe is utilized after draining valve pit charge for remittance Water is drained into draining shaft or gutter 18 by road 2;
6th, precast concrete four-way anchor block 4, precast concrete threeway anchor block 6 are all divided into upper body part and lower body part, profit Concreting Mold Making is used, when burying, according to construction requirement, anchor block is first dug out and is cheated, cast-in-place C20 concrete 10cm, and will Precast concrete four-way anchor block lower body 13 and precast concrete threeway anchor block lower body 23 are separately fixed on cast in situ concrete foundation, Irrigation conduit 3 is docked on four-way endoporus 9 and threeway endoporus 19 respectively, drainage pipeline 2 is docked at 10 He of four-way exit orifice respectively In threeway exit orifice 20, precast concrete four-way anchor block upper body 12 and precast concrete threeway anchor block upper body 22 are butted up against respectively pre- On concrete four-way anchor block lower body 13 processed and precast concrete threeway anchor block lower body 23 so as to upper lower body draw-in groove clamping, it is impossible to Mobile, exit orifice is completely embedded with drainage pipeline;
7th, according to piping laying construction requirement, meet pipeline preventing freeze in winter requirement, geotextiles are installed, permeable sand is laid, are filled out Bury undisturbed soil.

Claims (5)

1. a kind of salt-soda soil farmland integration irrigation and drainage tubing, includes iirigation water source(1), drainage pipeline(2), irrigate Pipeline(3), drain valve(17)And gutter(18), it is characterised in that:Irrigation conduit(3)It is installed on drainage pipeline(2)It is interior, irrigate Pipeline(3)With drainage pipeline(2)Between be provided with permeable support ring(7), permeable support ring(7)It is provided with support ring permeable hole(8), Described drainage pipeline(2)With water seepage hole, the main pipeline of the draining collector pipe and water-supply-pipe of farmland integration is integrated into;Supervisor Subsection setup precast concrete four-way anchor block on road(4), precast concrete four-way anchor block(4)Four-way endoporus is provided with inside(9)With four Logical exit orifice(10), the drainage pipeline on main pipeline(2)And irrigation conduit(3)It is docked at precast concrete four-way anchor block(4)Upper phase Four-way exit orifice to two ends(10)With four-way endoporus(9)On, precast concrete four-way anchor block(4)Upper two ends difference relative in addition The drainage pipeline of docking branch pipe(tube)(2)And irrigation conduit(3), be integrated into farmland integration draining collector pipe and water-supply-pipe Pipeline;Interval setting precast concrete threeway anchor block on the branch pipe(tube)(6), precast concrete threeway anchor block(6)Three are provided with inside Logical endoporus(19)With threeway exit orifice(20), drainage pipeline(2)And irrigation conduit(3)It is docked at precast concrete threeway anchor block(6) The threeway exit orifice of upper opposite end(20)With threeway endoporus(19)On, precast concrete threeway anchor block(6)Another branch road be provided with Water supply riser passes through hole(11), water supply riser is by hole(11)Upper setting water supply riser(21), water supply riser(21)On install to Water bolt(5).
2. according to the salt-soda soil farmland integration irrigation and drainage tubing described in claim 1, it is characterised in that:Described is saturating Water support ring(7)For roller shape, the two-wheeled of roller relative is provided with support ring permeable hole along upper(8).
3. according to the salt-soda soil farmland integration irrigation and drainage tubing described in claim 1, it is characterised in that:Described is pre- Concrete four-way anchor block processed(4)By precast concrete four-way anchor block upper body(12)With precast concrete four-way anchor block lower body(13)Structure Into described precast concrete threeway anchor block(6)By precast concrete threeway anchor block upper body(22)With precast concrete threeway town Pier lower body(23)Constitute;It is easily installed construction.
4. according to the salt-soda soil farmland integration irrigation and drainage tubing described in claim 1, it is characterised in that:Described filling Irrigate pipeline(3)Made using PVC or PE tubing;Described drainage pipeline(2)Using the corrugated tube or pervious concrete that have seepage hole Pipe is made.
5. the construction method of a kind of salt-soda soil farmland integration irrigation and drainage tubing, it is characterised in that:Construction method is as follows:
First, Sewer Line Distribution spacing and buried depth, drainage pipeline are calculated according to Underground Water in Salinization Area buried depth and drainage requirement(2)Bury Deeply within 1.8m, drainage pipeline(2)For corrugated tube or the permeable concrete pipe of punching, drainage pipeline(2)External application geotextiles(14) With the middle sand pervious bed of 20cm thickness(15), as loaded filter, middle sand pervious bed(15)Upper is undisturbed soil(16)Backfill, pipeline paving If the gradient decline according to draining water (flow) direction, arm gradient is slightly larger, and supervisor's gradient is slightly smaller, and gradient is in 1/2000-1/500 scopes Interior, the depth of burying is required according to level of ground water and drainage;Irrigation conduit(3)Do not affected by the depth of burying;From iirigation water source(1) After place's water lift, Jing irrigation conduits(3)Water conveyance irrigation is carried out, pipeline does not increase the loss of flood peak because of buried depth;
2nd, irrigation conduit(3)It is sleeved on drainage pipeline(2)When middle, by permeable support ring(7)It is enclosed within irrigation conduit(3)Outside, wears Intake-discharge pipe road(2)In, work as drainage pipeline(2)During middle draining, by permeable support ring permeable hole(8)Downstream pipeline flowing;
3rd, according to requirement is irrigated, 50-100m is spaced on main pipeline one precast concrete four-way anchor block is set(4), prefabricated Concrete four-way anchor block(4)Upper structure branch pipe(tube), arranges a precast concrete threeway anchor block every 50-100m on branch pipe(tube) (6), precast concrete threeway anchor block(6)Feedwater pass through hole(11)Upper setting water supply riser(21), water supply riser(21)Upper peace Dress hydrant(5), hydrant(5)Pattern unrestricted choice extensive stock model, irrigation conduit water delivery meets big hydraulic pressure salt simultaneously Requirement;The water supply riser of irrigation conduit(21)Install in advance, and it is above ground level, after irrigation canals and ditches landfill is finished, hydrant is installed (5);
When the 4th, running into irrigation supervisor to arm point water or branch drain to the situation of supervisor's charge for remittance, or when needing fixed -piping, Using precast concrete threeway anchor block(6)Or precast concrete four-way anchor block(4)It is attached, drainage pipeline(2)Socket joint is four Logical exit orifice(10)Or threeway exit orifice(20)Place, irrigation conduit(3)Socket joint is in four-way endoporus(9)Or threeway endoporus(19)Place;
5th, drainage pipeline(2)It is eventually leading to draining shaft or gutter(18), while utilizing irrigation conduit(3)The sluicing of end Valve(17)Draining in the winter time;Irrigation conduit(3)Drain valve(17)And drainage pipeline(2)With reference to after draining valve pit charge for remittance Using drainage pipeline(2)Water is drained into into draining shaft or gutter(18);
6th, precast concrete four-way anchor block(4), precast concrete threeway anchor block(6)All it is divided into upper body part and lower body part, profit Concreting Mold Making is used, when burying, according to construction requirement, anchor block is first dug out and is cheated, cast-in-place C20 concrete 10cm, and will Precast concrete four-way anchor block lower body(13)With precast concrete threeway anchor block lower body(23)It is separately fixed at cast-in-place concrete base On plinth, by irrigation conduit(3)Four-way endoporus is docked at respectively(9)With threeway endoporus(19)On, drainage pipeline(2)It is docked at respectively Four-way exit orifice(10)With threeway exit orifice(20)On, by precast concrete four-way anchor block upper body(12)With precast concrete threeway anchor block Upper body(22)Precast concrete four-way anchor block lower body is butted up against respectively(13)With precast concrete threeway anchor block lower body(23)On, Make lower body draw-in groove clamping thereon, it is impossible to mobile, exit orifice is completely embedded with drainage pipeline;
7th, according to piping laying construction requirement, meet pipeline preventing freeze in winter requirement, geotextiles are installed, permeable sand is laid, landfill is former Shape soil.
CN201610103549.2A 2016-02-25 2016-02-25 Integral irrigation and drainage pipe system of saline-alkali soil farmland and construction method Expired - Fee Related CN105586859B (en)

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CN205382473U (en) * 2016-02-25 2016-07-13 山东省水利科学研究院 Drainage pipe system is irrigated in integration of saline and alkaline land farmland

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