CN104895027A - Self-circulated and ecological water saving type irrigating draining system and draining method - Google Patents
Self-circulated and ecological water saving type irrigating draining system and draining method Download PDFInfo
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Abstract
The invention relates to a self-circulated and ecological water saving type irrigating draining system and a draining method. The system is that an internal and external water control gate 2 is arranged between an outer river 1 and a water accumulating wetland area 3; a water pump station 4 is arranged in the water accumulating wetland area 3; a water draining wetland farm ditch 9 is communicated with the water accumulating wetland area 3; the water pump station 4 is connected with an underground water irrigating pipe 5, wherein the underground water irrigating pipe 5 is connected with a water distribution pond 6; the water distribution pond 6 is connected with a water inlet 8; a water distributing head 7 is arranged on the water inlet 8; the water accumulating wetland area 3 is connected with the water draining wetland farm ditch 9; the water draining wetland farm ditch 9 is connected with a draining rill 10; a ridge 11 is arranged between the water draining wetland farm ditch 9 and a farmland 12. The system has the advantages that the water environment for the crops growing is ensured, the utilization rate of water irrigated to the farmland can be increased, and thus the water resource can be effectively saved, and the crops output can be increased; water can be fully exchanged; the water environment mass of the river can be improved; the construction is simple; the popularization and application are convenient; a large amount of construction works can be saved; the system can be widely applied to the farmland.
Description
Technical field
What the present invention relates to is a kind of self-loopa ecological water saving type irrigation and drainage system and water discharge method, belongs to irrigation and water conservancy irrigation and drainage technology and agricultural area source control technology and restoration of the ecosystem field.
Background technology
China is the country of a water resource critical shortage, and water utilization rate is also very low simultaneously, and its most reason is caused by the waste of China's agricultural irrigation water.Agricultural water is the water resource of reproducible utilization, how to pass through optimal design and the science layout of irrigation and drainage system with functions, and it is the important channel solving shortage of water resources that the self-loopa realizing farmland-use water utilizes.
In the agricultural drain of irrigated area, because farmland fertilization, spray spraying pesticide etc. produce widespread pollution from the overuse of fertilizers and pesticides in rural area.Widespread pollution from the overuse of fertilizers and pesticides in rural area enters surface water by agricultural drain " sublateral canal-field ditch-lateral canal-branch canal-trunk canal " system.Current widespread pollution from the overuse of fertilizers and pesticides in rural area has become most important and the widest pollution of area source that distributes, is the main cause causing the numerous body eutrophication of China and grain security.How effectively control agricultural non-point pollution thing, particularly poisonous class agricultural chemicals purification is removed is a current farm field irrigation drainage system key technology difficult problem in the urgent need to address.
But analyze domestic and international farm irrigation system and show, the filling drainage technique reaching farmland-use water self-loopa and effective purifying contaminated thing is also rare.Particularly from system perspective, by filling with the reasonable construction of isostere system compared with large scale irrigated area, forming region water resource self-circulating system and the clean dirt of drainage system wetland combine, and reach water saving, clean dirty and that ecologic facies is unified technology there is not yet.
Summary of the invention
What the present invention proposed is a kind of self-loopa ecological water saving type irrigation and drainage system and water discharge method, its object: the Ecosystem Irrigation drainage system building a kind of multi-functional self-loopa, farmland sysrem for different terrain conditions, different land use patterns provides a kind of waterlogging-resistant irrigation and drainage system of drainning off floodwaters, reach the object controlling widespread pollution from the overuse of fertilizers and pesticides in rural area simultaneously, thus reduce the pollution of agricultural area source pollutants confrontation downstream water.
Technical scheme of the present invention: self-loopa ecological water saving type irrigation and drainage system, its structure is inside and outside water control checks 2 between outer river 1 and ponding Humid Area 3, establish in ponding Humid Area 3 is water pump station 4, draining wetland farm ditch 9 communicates with ponding Humid Area 3, irrigation pipe 5 under water pump station 4 ground connection, underground irrigation pipe 5 connects distribution reservoir 6, distribution reservoir 6 taps into the mouth of a river 8, water inlet 8 is established water diversing head 7, run in meadow bog farm ditch 9 in ponding Humid Area 3, draining wetland farm ditch 9 connects farm drainage ditch 10, is ridges 11 between draining wetland farm ditch 9 and field 12.
Its water discharge method, comprises the steps:
1) in farmland sysrem, build ponding Humid Area (3), between ponding Humid Area (3) and outer river (1), build inside and outside water control check (2), for arid with regulate the water yield in ponding Humid Area (3) flood season;
2) the irrigation water body in ponding Humid Area (3) promotes head to underground pipe network (5) of pouring water by water pump station (4) and is conveyed in distribution reservoir (6) corresponding to every block field;
3) field (12) is entered by T-shape water diversing head (7) point water by water inlet (8) again;
4) first drain into farm drainage ditch (10) in field (12) draining, then be flowed to draining wetland farm ditch (9);
5) water body is by wetland plant (15) purification, finally imports wetland plash (3), forms frame type draining and ponding system, when flood discharge is large or dry season amount hour, by inside and outside water control check (2) regulating pondage.
Advantage of the present invention:
1) the present invention is independently self-circulation irrigation drainage system, even arid and flood flooded phase all can run well, ensure that the water environment needed for growth of crops;
2) improve farmland irrigating water use efficiency, effectively saved water resource, improve crop yield;
3) the self-circulation irrigation draining that body series adopts effectively is carried out ecology to the eutrophication moisture of discharging in farmland such as nitrogen phosphorus compound and is absorbed and recycle;
4) agricultural drain current in wetland drainage farm ditch detour increase the time of staying, increase sedimentation effect, the biology on gabion surface can tackle suspension, absorption and assimilation organic matter, through gabion water body and stream water body formed cross-flow, water body is fully exchanged;
5) efficient hardening farmland of the present invention water body self-purification ability, effectively controls widespread pollution from the overuse of fertilizers and pesticides in rural area, improves River water quality;
6) the present invention constructs simply, is convenient to promotion and implementation, not a large amount of capital works, can extensive use in farmland.
Accompanying drawing illustrates:
Accompanying drawing 1 is self-loopa ecological water saving type irrigation and drainage system construction schematic diagram.
Accompanying drawing 1-1 is the partial enlarged drawing of the 2-2 in Fig. 1.
Accompanying drawing 2 is draining wetland farm ditch sectional drawings.
Accompanying drawing 3 is field drainage hair ditch sectional drawings.
In figure, 1 is outer river, and 2 is inside and outside water control checks, and 3 is ponding Humid Areas, and 4 is water pump stations, 5 is underground irrigation pipes, and 6 is distribution reservoirs, and 7 is water diversing heads, 8 is water inlets, and 9 is draining wetland farm ditches, and 10 is farm drainage ditches, 11 is ridges, and 12 is fields, and 13 is farm machinery roads, 14 is agriculture bridges, and 9-1 is gabion, and 9-2 is timber, 10-1 is wire galvanization net bank protection, and 15-1 is plant waterborne, and 15-2 is submerged plant.
Detailed description of the invention
Contrast Fig. 1, self-loopa ecological water saving type irrigation and drainage system, its structure is inside and outside water control checks 2 between outer river 1 and ponding Humid Area 3, establish in ponding Humid Area 3 is water pump station 4, draining wetland farm ditch 9 communicates with ponding Humid Area 3, irrigation pipe 5 under water pump station 4 ground connection, underground irrigation pipe 5 connects distribution reservoir 6, distribution reservoir 6 taps into the mouth of a river 8, water inlet 8 is established water diversing head 7, run in meadow bog farm ditch 9 in ponding Humid Area 3, and draining wetland farm ditch 9 connects farm drainage ditch 10, is ridges 11 between draining wetland farm ditch 9 and field 12.
Contrast Fig. 1-1, being fields 12 between ridge 11, having timber 9-2 in field 12, the indirect gabion 9-1 of two timber 9-2, be submerged plant 15-2, timber 9-2 both sides is plant 15-1 waterborne between gabion 9-1, ridge 11 has wire galvanization net bank protection 10-1,
The water discharge method of self-loopa ecological water saving type irrigation and drainage system: comprise,
1) in farmland sysrem, build ponding Humid Area (3), between ponding Humid Area (3) and outer river (1), build inside and outside water control check (2), for arid with regulate the water yield in ponding Humid Area (3) flood season;
2) the irrigation water body in ponding Humid Area (3) promotes head to underground pipe network (5) of pouring water by water pump station (4) and is conveyed in distribution reservoir (6) corresponding to every block field;
3) field (12) is entered by T-shape water diversing head (7) point water by water inlet (8) again;
4) first drain into farm drainage ditch (10) in field (12) draining, then be flowed to draining wetland farm ditch (9);
5) water body is by wetland plant (15) water purification, finally imports wetland plash (3), forms frame type draining and ponding system.As shown in Fig. 1, Fig. 1-1.
Described draining wetland farm ditch (9) is divided into two-layer, bottom draining hold concurrently gabion (9-1) purification, upper strata is plant (15) water purification; Draining wetland farm ditch (9) adopts the Morphogenesis that longitudinally wriggles, bank slope both sides, river course are sealed with pin (9-2), form new riverbed, between two rows' timber (9-2), place gabion (9-1), bank slope plants slope plants, more than ordinary water level, plants plant waterborne (15-1), such as careless class etc., planting submerged plant (15-2) is planted, such as eel grass, water caltrop, toad's-mouth, hydrilla verticillata etc., to reach better purifying water effect below ordinary water level.As shown in Figure 2.
Described farm drainage ditch (10) is ecological grass ditch, and slope plants planted by wire galvanization net bank protection (10-1), more than ordinary water level plants plant waterborne (15-1), plants planting submerged plant (15-2) below ordinary water level.Farm drainage ditch (10) gets inclination angle to a certain degree, so that draining along journey.As shown in Figure 3.
Claims (6)
1. self-loopa ecological water saving type irrigation and drainage system, it is characterized in that it being inside and outside water control check between outer river and ponding Humid Area, establishing in ponding Humid Area is water pump station, and draining wetland farm ditch communicates with ponding Humid Area, irrigation pipe under water pump station ground connection, underground irrigation pipe connects distribution reservoir, distribution reservoir taps into the mouth of a river, and water inlet establishes water diversing head, and run in meadow bog farm ditch in ponding Humid Area, draining wetland farm ditch connects farm drainage ditch, and draining is wet
Ridge between ground farm ditch and field.
2. self-loopa ecological water saving type irrigation and drainage system according to claim 1, is characterized in that between described ridge it being field, has timber in field, the indirect gabion of two timbers, be submerged plant between gabion, timber both sides are plants waterborne, ridge have wire galvanization net bank protection.
3. self-loopa ecological water saving type irrigation and drainage system according to claim 1, is characterized in that described water inlet arranges the water yield and water quality monitoring apparatus.
4. the water discharge method of self-loopa ecological water saving type irrigation and drainage system as claimed in claim 1, is characterized in that comprising the steps:
1) in farmland sysrem, build ponding Humid Area, between ponding Humid Area and outer river, build inside and outside water control check, for arid with regulate the water yield in ponding Humid Area flood season;
2) the irrigation water body in ponding Humid Area promotes head to underground pipe network of pouring water by water pump station and is conveyed in distribution reservoir corresponding to every block field;
3) water is divided to enter field by water inlet by T-shape water diversing head again;
4) first drain into farm drainage ditch in field drainage, then be flowed to draining wetland farm ditch;
5) water body is by wetland plant water purification, finally imports wetland plash, forms frame type draining and ponding system, when flood discharge is large or dry season amount hour, by inside and outside water control check regulating pondage.
5. the water discharge method of self-loopa ecological water saving type irrigation and drainage system as claimed in claim 4, is characterized in that described draining wetland farm ditch is divided into two-layer, and bottom draining is held concurrently gabion purification, and upper strata is plant water purifying; Draining wetland farm ditch adopts the Morphogenesis that longitudinally wriggles, bank slope both sides, river course are sealed with pin, form new riverbed, between two row's timbers, place gabion, bank slope plants slope plants, more than ordinary water level, plants plant waterborne, such as careless class, planting submerged plant is planted, such as eel grass, water caltrop, toad's-mouth, hydrilla verticillata, to reach better purifying water effect below ordinary water level.
6. the water discharge method of self-loopa ecological water saving type irrigation and drainage system as claimed in claim 4, it is characterized in that described farm drainage ditch is ecological grass ditch, slope plants planted by wire galvanization net bank protection, more than ordinary water level plants plant waterborne, below ordinary water level, plant planting submerged plant; Farm drainage ditch gets an inclination angle along journey, so that draining.
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CN105178425A (en) * | 2015-09-22 | 2015-12-23 | 余姚市人民政府凤山街道办事处 | Flood-drainage, water-supplementing and water-changing pump station junction design for cities and towns |
CN105297669A (en) * | 2015-10-09 | 2016-02-03 | 佟保根 | Draining and irrigating system |
CN105507222A (en) * | 2015-11-20 | 2016-04-20 | 中国水利水电科学研究院 | Irrigation area canal system suitable for water culture of Tibetan region |
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