CN104404932B - A kind of hidden pipe dredging method based on heavily salted farmland drip irrigation system - Google Patents
A kind of hidden pipe dredging method based on heavily salted farmland drip irrigation system Download PDFInfo
- Publication number
- CN104404932B CN104404932B CN201410617805.0A CN201410617805A CN104404932B CN 104404932 B CN104404932 B CN 104404932B CN 201410617805 A CN201410617805 A CN 201410617805A CN 104404932 B CN104404932 B CN 104404932B
- Authority
- CN
- China
- Prior art keywords
- water
- millimeters
- hidden pipe
- farmland
- closed
- 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.)
- Active
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B11/00—Drainage of soil, e.g. for agricultural purposes
- E02B11/005—Drainage conduits
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G25/00—Watering gardens, fields, sports grounds or the like
- A01G25/02—Watering arrangements located above the soil which make use of perforated pipe-lines or pipe-lines with dispensing fittings, e.g. for drip irrigation
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Soil Sciences (AREA)
- Water Supply & Treatment (AREA)
- Environmental Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Nozzles (AREA)
Abstract
The present invention relates to a kind of hidden pipe dredging method based on heavily salted farmland drip irrigation system, closed drainage system is coupled together by the method by the water-carriage system of water delivery hidden pipe with drip irrigation system, and then with drip irrigation system as power source, water is inputted the hidden pipe buried underground according to different paving modes and carries out the efficient desilting of strength.Using the method can be according to the reality of hidden pipe alluvial and the time and intensity that the impact of salinized farmland proper drainage (impact that mainly level of ground water rises) selects desilting flexibly, overcoming Oasis irrigation district hidden pipe desilting wastes time and energy and effect is difficult to lasting problem.The method is suitable for the heavily salted farmland that drip irrigation system is complete, mainly solves the desilting problem of 2 kinds of closed drainage modes.
Description
Technical field
The present invention relates to a kind of hidden pipe dredging method based on heavily salted farmland drip irrigation system, particularly relate to utilize closed drainage technology quick improvement subsoil water buried depth modification method of heavily salted soil within the scope of 1.5 meters, belong to soil improvement field.
Background technology
Closed drainage technology is the common technique means of Oasis irrigation district improvement heavily salted soil, there is instant effect and improvement cycle short advantage, but the means of tradition hidden pipe desilting lack stable field power source, often expend the most artificial and efficiency is low, cost is high, dredging effect is poor, cause drainage effect to be affected and limit the large-scale promotion of hidden pipe technology, but, along with drip irrigation technique is in the large-area applications of arid biogeographic zone, hidden pipe desilting obtains continual and steady power source and is possibly realized, and makes improvement hidden pipe dredging technology be possibly realized.
By substantial amounts of " SWIC " (1989-), " academic magazine data base " (1994-), " Chinese patent database " (1985-), ISI Proceedings(1968-), CSA(1985-), Blackwell (1990-), the international and domestic database retrievals such as Elsevier (1980-), detect the patent 8 relevant to salt-soda soil closed drainage altogether, 155, document, but it is directed exclusively to hidden pipe dredging method and only has 1, and be that traditional utilization high-pressure sprayer is (by water pump, rubber hose and high-pressure nozzle composition) method that carries out draining desilting；The article relevant to hidden pipe dredging technology does not the most retrieve.I.e. there are no with field drip irrigation system as power source by literature search, connect the connection between drip irrigation water-carriage system and closed drainage system and carry out the relevant report of the technology of desilting and patent.
Summary of the invention
A kind of hidden pipe dredging method based on heavily salted farmland drip irrigation system of the present invention, closed drainage system is coupled together by the method by the water-carriage system of water delivery hidden pipe with drip irrigation system, and then with drip irrigation system as power source, water is inputted the hidden pipe buried underground according to different paving modes and carries out the efficient desilting of strength.Using the method can be according to the reality of hidden pipe alluvial and the time and intensity that the impact of salinized farmland proper drainage (impact that mainly level of ground water rises) selects desilting flexibly, overcoming Oasis irrigation district hidden pipe desilting wastes time and energy and effect is difficult to lasting problem.The method is suitable for the heavily salted farmland that drip irrigation system is complete, mainly solves the desilting problem of 2 kinds of closed drainage modes: i.e. with pvc pipe that caliber is 75 millimeters as closed drain and lay direction and field row's alkali lateral canal (being called for short bucket row) vertical and UNICOM therewith closed drainage mode and with pvc pipe that caliber is 50 millimeters as closed drain and bury direction and field underground and arrange alkali field ditch (abbreviation agriculture is arranged) vertical and UNICOM therewith closed drainage mode.
A kind of hidden pipe dredging method based on heavily salted farmland drip irrigation system of the present invention, follows these steps to carry out:
nulla、By the closed drain (4) of 75 millimeters of calibers along the direction vertical with farmland bucket row (5)，Bury underground by 30 meters of spacing and through to farmland bucket row (5)，Depth of burying 0.8-1m，In the side away from farmland bucket row (5)，90 millimeters of caliber pvc pipes are buried underground as water delivery hidden pipe (2) along the vertical direction with closed drain (4) and salinized farmland drip irrigation system delivery main (1)，Depth of burying 0.8-1m，Water delivery hidden pipe (2) water inlet turns 90 millimeters of reducings with delivery main (1) with 110 millimeters of threeways and 110 millimeters and connects and install point water polo valve (3) to control the water yield，Water delivery hidden pipe (2) opposite side plug seals with preventing water leakage，Water delivery hidden pipe (2) turns 75 millimeters of reducing UNICOMs with closed drain (4) mouth of pipe intersection one 90 millimeters of threeway and 90 millimeters，And control flow with connecting point water polo valve (3)，Water polo valve (3) is divided to basset and fence protection of laying bricks；
nullOr by 50 millimeters of caliber closed drains (4) along the direction vertical with farmland agriculture row (6)，Bury underground according to 2 meters of spacing and arrange (6) through to farmland agriculture，Depth of burying 0.8-1m，In the side away from farmland agriculture row (6)，One 75 millimeters calibers water delivery hidden pipe (2) are buried respectively underground along the direction vertical with the direction that closed drain (4) is buried underground and salinized farmland drip irrigation system delivery main (1)，Depth of burying 0.8-1m，Article 2, with the bend pipe UNICOM of 75 millimeters between water delivery hidden pipe (2)，Water delivery hidden pipe (2) water inlet turns 75 millimeters of reducing UNICOMs with delivery main (1) 110 millimeters of threeways and 110 millimeters，And mounting ball valve (3) is to control the water yield，Water delivery hidden pipe (2) end plug seals with preventing water leakage，Water delivery hidden pipe (2) turns 50 millimeters of reducing UNICOMs with closed drain (4) mouth of pipe intersection peace one 75 millimeters of threeway and 75 millimeters，And connect point water polo valve (3) control flow，Water polo valve (3) is divided to basset and fence protection of laying bricks；
Point water polo valve (3) of water delivery hidden pipe (2) and drip irrigation system delivery main (1) junction is opened when b, desilting, water is made to enter water delivery hidden pipe (2), the practical situation blocked up according to hidden pipe (2) determines the time and intensity of draining desilting, the desilting time, desilting frequency was with 1 year 1 time to carry out before use water low ebb phase in autumn and winter irrigation；
C, silt exceed the 1/2 of nozzle diameter, for 75 millimeters of caliber closed drains (4), the most only open point water polo valve (3) between 1-2 water delivery hidden pipe (2) and closed drain (4), close remaining point of water polo valve (3), be 1 group with 1-2 closed drain (4) and carry out strongly cleaning；
D, silt exceed the 1/2 of nozzle diameter, for 50 millimeters of caliber closed drains (4), the most only open point water polo valve (3) between 2-3 water delivery hidden pipe (2) and closed drain (4), close remaining point of water polo valve (3), be 1 group with 2-3 closed drain (4) and carry out strongly cleaning；
E, silt are less than the 1/2 of nozzle diameter, for 75 millimeters of caliber closed drains (4), the most only open point water polo valve (3) between 3-4 water delivery hidden pipe (2) and closed drain (4), close remaining point of water polo valve (3), be 1 group with 3-4 closed drain (4) and carry out strongly cleaning；
F, silt are less than the 1/2 of nozzle diameter, for 50 millimeters of caliber closed drains (4), then select point water polo valve (3) opening between 4-6 water delivery hidden pipe (2) and closed drain (4), close remaining point of water polo valve (3), be 1 group with 4-6 closed drain (4) and carry out strongly cleaning.
A kind of hidden pipe dredging method based on heavily salted farmland drip irrigation system of the present invention, the method as tubing and lays direction and farmland bucket vertical and UNICOM therewith the closed drain drainage pattern of row for the pvc pipe that caliber is 75 millimeters, depth of burying 0.8-1m, in the side arranged away from farmland agriculture, 90 millimeters of caliber pvc pipes are buried underground as water delivery hidden pipe along the direction vertical with hidden pipe and salinized farmland drip irrigation system delivery main (being the pvc pipe of 110 millimeters of calibers), depth of burying 0.8-1m, water inlet turns 90 millimeters of reducings connections mounting ball valve to control the water yield with delivery main 110 millimeters of threeways and 110 millimeters, water delivery hidden pipe opposite side plug seals with preventing water leakage；Water delivery hidden pipe turns 75 millimeters of reducing UNICOMs with closed drain mouth of pipe intersection one 90 millimeters of threeway and 90 millimeters, and controls flow with point water polo valve, and ball valve bassets and fence protection of laying bricks；
For with pvc pipe that caliber is 50 millimeters as tubing and the closed drainage mode of vertical UNICOM is arranged with farmland agriculture in closed drainage direction, depth of burying 0.8-1m, in the side arranged away from farmland agriculture, one 75 millimeters caliber water delivery hidden pipes are buried in the direction vertical along the direction buried underground with hidden pipe and salinized farmland drip irrigation system delivery main respectively underground, depth of burying 0.8-1m, article 2, with the bend pipe UNICOM of 75 millimeters between water delivery hidden pipe, water delivery hidden pipe water inlet turns 75 millimeters of reducings connections mounting ball valve to control the water yield with delivery main 110 millimeters of threeways and 110 millimeters, water delivery hidden pipe end plug seals with preventing water leakage；Water delivery hidden pipe turns 50 millimeters of reducing UNICOMs with closed drain mouth of pipe intersection one 75 millimeters of threeway and 75 millimeters, and controls flow with point water polo valve, and ball valve bassets and fence protection of laying bricks；
The ball valve of water delivery hidden pipe and drip irrigation system delivery main junction is opened during desilting, water is made to enter water delivery hidden pipe, the practical situation blocked up according to hidden pipe determines the time and intensity of draining desilting, on the premise of hidden pipe congestion does not affect farmland proper drainage, the desilting time, desilting frequency was advisable with 1 year 1 time to be advisable before use water low ebb phase in autumn and winter irrigation；
If silt exceedes the 1/2 of nozzle diameter, the most only opening point water polo valve between 1-2 water delivery hidden pipe and closed drain for 75 millimeters of caliber closed drains, close remaining point of water polo valve, 1-2 closed drain is 1 group to carry out strongly cleaning；
If silt exceedes the 1/2 of nozzle diameter, the most only opening point water polo valve between 2-3 water delivery hidden pipe and closed drain for 50 millimeters of caliber closed drains, close remaining point of water polo valve, 2-3 closed drain is 1 group to carry out strongly cleaning；
If silt is less than the 1/2 of nozzle diameter, the most only opening point water polo valve between 3-4 water delivery hidden pipe and closed drain for 75 millimeters of caliber closed drains, close remaining point of water polo valve, 3-4 closed drain is 1 group to carry out strongly cleaning；
If silt is less than the 1/2 of nozzle diameter, for 50 millimeters of caliber closed drains then optional point water polo valve opened between 4-6 water delivery hidden pipe and closed drain, closing remaining point of water polo valve, 4-6 closed drain is 1 group to carry out strongly cleaning.
Accompanying drawing explanation
Fig. 1 is tubing, leads directly to the hidden pipe desilting figure that the closed drainage mode of bucket row is taked with caliber by 75 millimeters of pvc pipes by the present invention；
Fig. 2 is tubing, leads directly to the hidden pipe desilting figure that the closed drainage mode of agriculture row is taked with caliber by 50 millimeters of pvc pipes by the present invention.
Detailed description of the invention
Embodiment 1
1st kind of drainage pattern is as shown in Figure 1, the closed drain 4 of 75 millimeters of calibers is arranged 5 vertical directions along with farmland bucket, it is 30 meters by spacing bury underground and arrange the drainage pattern of 5 through to farmland bucket, depth of burying 0.8-1m, in the side away from farmland bucket row, 90 millimeters of caliber pvc pipes are buried underground as water delivery hidden pipe 2 along the direction vertical with hidden pipe and salinized farmland drip irrigation system delivery main 1, depth of burying 0.8m, water delivery hidden pipe 2 turns 90 millimeters of reducings with delivery main 1 with 110 millimeters of threeways and 110 millimeters and connects and install point water polo valve 3 to control the water yield, water delivery hidden pipe 2 opposite side plug seals with preventing water leakage；Water delivery hidden pipe 2 turns 75 millimeters of reducing UNICOMs with closed drain 4 mouth of pipe intersection one 90 millimeters of threeway and 90 millimeters, and controls flow with installing a point water polo valve 3, and a point water polo valve 3 bassets and fence protection of laying bricks；
Point water polo valve 3 of water delivery hidden pipe 2 and drip irrigation system delivery main 1 junction is opened during desilting, water is made to enter water delivery hidden pipe 2, the practical situation blocked up according to hidden pipe determines the time and intensity of draining desilting, and the desilting time, desilting frequency was with 1 year 1 time to carry out before use water low ebb phase in autumn and winter irrigation；
Silt exceedes the 1/2 of nozzle diameter, for 75 millimeters of caliber closed drains 4, the most only opens point water polo valve 3 between 1-2 water delivery hidden pipe 2 and closed drain 4, closes remaining point of water polo valve 3, is 1 group with 1-2 closed drain 4 and carries out strongly cleaning；
Silt, less than the 1/2 of nozzle diameter, for 75 millimeters of caliber closed drains 4, is the most only opened point water polo valve 3 between 3-4 water delivery hidden pipe 2 and closed drain 4, is closed remaining point of water polo valve 3, is 1 group with 3-4 closed drain 4 and carries out strongly cleaning.
Embodiment 2
2nd kind of drainage pattern is as shown in Figure 2, by 50 millimeters of caliber closed drains 4 along arranging 6 vertical directions with farmland agriculture, it is 2 meters according to spacing bury underground and arrange the drainage pattern of 6 through to farmland agriculture, depth of burying 1m, in the side away from farmland agriculture row 6, one 75 millimeters caliber water delivery hidden pipes 2 are buried in the direction vertical along the direction buried underground with hidden pipe and salinized farmland drip irrigation system delivery main 1 respectively underground, depth of burying 1m, article 2, with the bend pipe UNICOM of 75 millimeters between water delivery hidden pipe 2, water delivery hidden pipe 2 water inlet turns 75 millimeters of reducing UNICOMs with delivery main 1 110 millimeters of threeways and 110 millimeters, and point water polo valve 3 is installed to control the water yield, water delivery hidden pipe 2 end plug seals with preventing water leakage；Water delivery hidden pipe 2 turns 50 millimeters of reducing UNICOMs with closed drain 4 mouth of pipe intersection peace one 75 millimeters of threeway and 75 millimeters, and a connection point water polo valve 3 controls flow, and a point water polo valve 3 bassets and fence protection of laying bricks, and the spacing of closed drain 4 is 2 meters；
Point water polo valve 3 of water delivery hidden pipe 2 and drip irrigation system delivery main 1 junction is opened during desilting, make water enter water delivery hidden pipe 2 and determine the time and intensity of draining desilting according to the practical situation that hidden pipe blocks up, the desilting time, desilting frequency was with 1 year 1 time to carry out before use water low ebb phase in autumn and winter irrigation；
Silt exceedes the 1/2 of nozzle diameter, for 50 millimeters of caliber closed drains 4, the most only opens point water polo valve 3 between 2-3 water delivery hidden pipe 2 and closed drain 4, closes remaining point of water polo valve 3, is 1 group with 2-3 closed drain 4 and carries out strongly cleaning；
Silt, less than the 1/2 of nozzle diameter, for 50 millimeters of caliber closed drains 4, then selects point water polo valve 3 opening between 4-6 water delivery hidden pipe 2 and closed drain 4, closes remaining point of water polo valve 3, is 1 group with 4-6 closed drain 4 and carries out strongly cleaning.
Claims (1)
1. a hidden pipe dredging method based on heavily salted farmland drip irrigation system, it is characterised in that follow these steps to carry out:
nulla、By the closed drain (4) of 75 millimeters of calibers along the direction vertical with farmland bucket row (5)，Bury underground by 30 meters of spacing and through to farmland bucket row (5)，Depth of burying 0.8-1m，In the side away from farmland bucket row (5)，90 millimeters of caliber pvc pipes are buried underground as water delivery hidden pipe (2) along the vertical direction with closed drain (4) and salinized farmland drip irrigation system delivery main (1)，Depth of burying 0.8-1m，Water delivery hidden pipe (2) water inlet turns 90 millimeters of reducings with delivery main (1) with 110 millimeters of threeways and 110 millimeters and connects and install point water polo valve (3) to control the water yield，Water delivery hidden pipe (2) opposite side plug seals with preventing water leakage，Water delivery hidden pipe (2) turns 75 millimeters of reducing UNICOMs with closed drain (4) mouth of pipe intersection one 90 millimeters of threeway and 90 millimeters，And control flow with connecting point water polo valve (3)，Water polo valve (3) is divided to basset and fence protection of laying bricks；
nullOr by 50 millimeters of caliber closed drains (4) along the direction vertical with farmland agriculture row (6)，Bury underground according to 2 meters of spacing and arrange (6) through to farmland agriculture，Depth of burying 0.8-1m，In the side away from farmland agriculture row (6)，One 75 millimeters calibers water delivery hidden pipe (2) are buried respectively underground along the direction vertical with the direction that closed drain (4) is buried underground and salinized farmland drip irrigation system delivery main (1)，Depth of burying 0.8-1m，Article 2, with the bend pipe UNICOM of 75 millimeters between water delivery hidden pipe (2)，Water delivery hidden pipe (2) water inlet turns 75 millimeters of reducing UNICOMs with delivery main (1) 110 millimeters of threeways and 110 millimeters，And point water polo valve (3) is installed to control the water yield，Water delivery hidden pipe (2) end plug seals with preventing water leakage，Water delivery hidden pipe (2) turns 50 millimeters of reducing UNICOMs with closed drain (4) mouth of pipe intersection peace one 75 millimeters of threeway and 75 millimeters，And connect point water polo valve (3) control flow，Water polo valve (3) is divided to basset and fence protection of laying bricks；
Point water polo valve (3) of water delivery hidden pipe (2) and drip irrigation system delivery main (1) junction is opened when b, desilting, water is made to enter water delivery hidden pipe (2), the practical situation blocked up according to water delivery hidden pipe (2) determines the time and intensity of draining desilting, the desilting time, desilting frequency was with 1 year 1 time to carry out before use water low ebb phase in autumn and winter irrigation；
C, silt exceed the 1/2 of nozzle diameter, for 75 millimeters of caliber closed drains (4), the most only open point water polo valve (3) between 1-2 water delivery hidden pipe (2) and closed drain (4), close remaining point of water polo valve (3), be 1 group with 1-2 closed drain (4) and carry out strongly cleaning；
D, silt exceed the 1/2 of nozzle diameter, for 50 millimeters of caliber closed drains (4), the most only open point water polo valve (3) between 2-3 water delivery hidden pipe (2) and closed drain (4), close remaining point of water polo valve (3), be 1 group with 2-3 closed drain (4) and carry out strongly cleaning；
E, silt are less than the 1/2 of nozzle diameter, for 75 millimeters of caliber closed drains (4), the most only open point water polo valve (3) between 3-4 water delivery hidden pipe (2) and closed drain (4), close remaining point of water polo valve (3), be 1 group with 3-4 closed drain (4) and carry out strongly cleaning；
F, silt are less than the 1/2 of nozzle diameter, water hidden pipe (4) is arranged for 50 millimeters of calibers, then select point water polo valve (3) opening between 4-6 water delivery hidden pipe (2) and closed drain (4), close remaining point of water polo valve (3), be 1 group with 4-6 closed drain (4) and carry out strongly cleaning.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410617805.0A CN104404932B (en) | 2014-11-06 | 2014-11-06 | A kind of hidden pipe dredging method based on heavily salted farmland drip irrigation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410617805.0A CN104404932B (en) | 2014-11-06 | 2014-11-06 | A kind of hidden pipe dredging method based on heavily salted farmland drip irrigation system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104404932A CN104404932A (en) | 2015-03-11 |
| CN104404932B true CN104404932B (en) | 2016-08-24 |
Family
ID=52642592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410617805.0A Active CN104404932B (en) | 2014-11-06 | 2014-11-06 | A kind of hidden pipe dredging method based on heavily salted farmland drip irrigation system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104404932B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104957008B (en) * | 2015-07-25 | 2017-10-20 | 山东农业大学 | Crop field pipe duct automatic irrigation system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003289733A (en) * | 2002-04-03 | 2003-10-14 | National Institute For Rural Engineering | Underdrainage device |
| CN102011380A (en) * | 2010-11-25 | 2011-04-13 | 河海大学 | Water level controller for farmland drainage tube |
| CN102227998A (en) * | 2011-04-20 | 2011-11-02 | 河海大学 | Concealed conduit system for both irrigation and drainage of farmland |
| CN103444493A (en) * | 2012-05-29 | 2013-12-18 | 成都振中电气有限公司 | Solar energy desert control drip irrigation system |
-
2014
- 2014-11-06 CN CN201410617805.0A patent/CN104404932B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003289733A (en) * | 2002-04-03 | 2003-10-14 | National Institute For Rural Engineering | Underdrainage device |
| CN102011380A (en) * | 2010-11-25 | 2011-04-13 | 河海大学 | Water level controller for farmland drainage tube |
| CN102227998A (en) * | 2011-04-20 | 2011-11-02 | 河海大学 | Concealed conduit system for both irrigation and drainage of farmland |
| CN103444493A (en) * | 2012-05-29 | 2013-12-18 | 成都振中电气有限公司 | Solar energy desert control drip irrigation system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104404932A (en) | 2015-03-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102587352B (en) | Hot-water draining consolidation processing device and hot-water draining consolidating processing method for soft soil foundation | |
| CN102227998A (en) | Concealed conduit system for both irrigation and drainage of farmland | |
| CN102758639B (en) | Anti-blowout long tube grouting method for limited-space tunnels | |
| CN103548440B (en) | Hair row formula pipe drainage method under a kind of shallow embedding condition | |
| CN203057982U (en) | Pipe network shallowly-buried spray irrigation well | |
| CN104404932B (en) | A kind of hidden pipe dredging method based on heavily salted farmland drip irrigation system | |
| CN104032709A (en) | Urban river bend silt prevention method | |
| CN203646217U (en) | Irrigation system device | |
| CN201911131U (en) | Water-saving sprinkler irrigation device for slope land | |
| CN109183802A (en) | A kind of construction method for protecting municipal pipeline | |
| CN209428159U (en) | Phreatic water extracts restoration processing system out | |
| CN109750718A (en) | Farm field irrigation drainage condominium system | |
| CN103790223B (en) | A kind of karst depression drainage system | |
| CN203284770U (en) | Buried type underground water reinjection system | |
| CN107218439A (en) | One kind is used for drip irrigation glass fiber reinforced plastic sand-inclusion pipeline installation method | |
| CN211285659U (en) | Drainage system for foundation pit | |
| CN204080925U (en) | A kind of karst Pipeline Water water intake system | |
| CN203924016U (en) | A kind of agricultural drain system | |
| CN102052517A (en) | Horizontal connecting system for regional underground vertical pipes and connecting construction method thereof | |
| CN205116196U (en) | A prosthetic devices for leaking waste pipe well is reported to sand | |
| CN101956421B (en) | Fast diversion method of drain pipe in drainage construction | |
| CN105060668A (en) | Prefabricated reinforced concrete septic tank and assembly method thereof | |
| CN110528663A (en) | A kind of construction method for protecting municipal pipeline | |
| CN103924632A (en) | Composite water intake technology and device with large-caliber radial well and siphon well | |
| CN104234027A (en) | Embedded blow-filled vibroflotation soft foundation processing method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |