WO2019101158A1

WO2019101158A1 - Intensive flood irrigation channel

Info

Publication number: WO2019101158A1
Application number: PCT/CN2018/117127
Authority: WO
Inventors: 党海愚
Original assignee: 党海愚
Priority date: 2017-11-25
Filing date: 2018-11-23
Publication date: 2019-05-31
Also published as: CN108086264A; CN108086264B

Abstract

An intensive flood irrigation channel, comprising an inner water-limiting dam wall (1) and an outer dam wall (3). The inner water-limiting dam wall (1) and the outer dam wall (3) are arranged in parallel. A channel (12) is found between the inner water-limiting dam wall (1) and the outer dam wall (3). The elevation of the channel (12) is lower than the minimum water level of a present section of riverbed. An outer dam wall water-limiting counterfort (2) is provided at a downstream extremity of the outer dam wall (3). A settled sand and flood discharging drain (4) is provided on the outer dam wall water-limiting counterfort (2). An overflow volume-adjustment sectional apron (13) is provided on the outside of the outer dam wall water-limiting counterfort (2). A settled sand and flood discharging drain gravitational apron (8) is provided on the outside of the settled sand and flood discharging drain (4). A channel gate (11) is provided downstream to the settled sand and flood discharging drain (4). A water supply inlet (5) is provided on the inner water-limiting dam wall (1) downstream to the channel gate (11). A water supply inlet pull-type apron (10) is provided on the inside of the water supply inlet (5). A water outlet (6) is provided downstream to the water supply inlet (5). A left-right pulling gate (7) is provided at the water outlet (6).

Description

Intensive flood irrigation channel

Technical field

The invention belongs to the field of farmland water conservancy technology, in particular to an intensive flood irrigation channel.

Background technique

Since the invention of cement, the development of the river rolling dam hub project has been developed once, which solves the problem of stable and stable water intake for flood silt and farmland irrigation. However, due to the influence of river bends and tributaries in the hilly area, the unit area of the land available for use on both sides of the river channel is cut into small pieces, and each piece of land on both sides of the river can be used for silt irrigation purposes. Close-up or intensive construction of horizontal rolling dams in river courses not only fails to bear the financial resources of construction, but also encounters a large flood, which is bound to flood the river channel water level, endangering the safe flooding of rivers and the lives and property of the people. Therefore, it seriously restricts the normal site selection of the construction of the silt dam in the hilly area, which has become an important reason for the flood to be difficult to use on the spot.

Summary of the invention

The invention provides an intensive flood irrigation channel in order to solve the problem that the traditional slurry rolling dam is high in cost and cannot be taken locally and is not allowed to be densely constructed in the river.

The invention adopts the following technical solutions: an intensive flood irrigation channel, including an inner limited dam wall and an outer dam wall, the inner limited dam wall and the outer dam wall are arranged in parallel, and the inner limit dam wall and the outer dam wall are channels, channels The elevation is lower than the lowest water level of the riverbed in this section, and the downstream end of the outer dam wall is provided with a water-retaining pier of the outer dam wall. The water-retaining pier of the outer dam wall is provided with a sediment discharge port, and the outer dam wall is limited to the outer side of the water-side pier. There is an overflow and volume adjustment section, and there is a gravitational protection channel on the outside of the sediment discharge channel. A channel gate is provided at the downstream of the sediment discharge channel, and the channel is downstream of the channel. There is a water supply channel on the wall of the limited dam. There is a water supply port on the inner side of the water supply channel, and a water outlet is provided on the downstream of the water supply channel. The water outlet is provided with left and right pull gates.

Further, the top elevation of the swim end of the outer dam wall is higher than the top elevation of the downstream end.

Further, the width of the outlet channel is smaller than the width of the channel.

Further, the elevation of the inner dam wall of the channel is higher than the elevation of the side of the outer dam wall.

Further, the width of the sediment discharge channel is the same as the width of the channel, and the elevation of the sediment discharge channel (4) is lower than the elevation of the bottom of the channel.

Further, a filter sheet is provided on the water supply channel.

Compared with the prior art, the intensive flood irrigation channel technology of the present invention is directed to the various defects existing in the vertical channel water intake port and the river channel slurry-blocking dam, and is changed to the vertical channel to directly take water, thereby omitting the fixed roll. The dam does not affect the safe flooding of the river. The channel uses eight functions of priority water intake, automatic overflow conditioning, automatic sand washing, sediment discharge, filtration and drainage of floating debris and grass seeds, self-flowing water supply, free handling and safe flood control. Engineering materials can replace and locally extract materials and add a protective layer that resists light and sand. The channel can also increase the amount of water supplied, and it can be used in the flood control of small and medium-flow water in the flood control project. Floods in the main and tributary channels can also be accessed simultaneously or separately from the tributary channels. It can also be used in conjunction with the dry land in the Hirakawa area to solve the problem of flood irrigation and water supply. Therefore, it is possible to convert floods, ice and snow, and constant water in the river into agricultural water, and do not need electromechanical power equipment and computer room pumping stations equipped with water lifting, all of which are self-flowing, clean and low-cost flooding.

DRAWINGS

Figure 1 is a schematic structural view of the present invention;

In the figure, 1 - inner limit dam wall, 2 - outer dam wall water limit pier, 3 - outer dam wall, 4 - sediment discharge port, 5 - water supply channel, 6 - outlet channel, 7 - pull Gate, 8-sand flood discharge channel gravity protector, 9-outlet channel gravity protector, 10-water supply channel pull-type protector, 11-channel brake, 12-channel, 13-overflow The volume of the section is protected.

Detailed ways

As shown in Fig. 1, an intensive flood irrigation channel includes an inner dam wall 1 and an outer dam wall 3, and the inner dam wall 1 and the outer dam wall 3 are arranged in parallel, and the inner dam wall 1 and the outer dam wall 3 are The channel is channel 12, the channel 12 elevation is lower than the lowest water level of the river bed, the outer dam wall 3 is provided with the outer dam wall water-retaining pier 2, and the outer dam wall water-retaining pier 2 is provided with the sedimentation port. Road 4, the outer dam wall is limited to the outer side of the water-retaining pier 2, and there is an overflow adjustment section, the abundance 13 is provided. The outer side of the sedimentation and discharge channel 4 is provided with a sedimentation and drainage channel gravity protection 8 and a sediment discharge channel. 4 There is a channel gate 11 at the downstream, and a water supply channel 5 is provided on the inner dam wall 1 of the downstream of the channel gate 11. The water supply channel 5 is provided with a water supply port pulling type amu 10 and a water supply channel. 5 The downstream side is provided with a water outlet channel 6, and the water outlet channel 6 is provided with a left and right pulling gate 7.

The top elevation of the upstream end of the outer dam wall 3 is higher than the top elevation of the downstream end. That is, the top elevation of the upstream end of the outer dam wall 3 is 40 cm higher than the bottom of the channel, and the top elevation of the downstream end of the outer dam wall 3 is 30 cm higher than the bottom of the channel.

The width of the outlet 6 is less than the width of the channel 12. Some of the garbage in the flood does not enter the water supply channel 5 and is discharged from the water outlet channel 6.

The inner elevation of the inner dam wall 1 of the channel 12 is higher than the elevation of the side of the outer dam wall 3. The slope is 1:0.1, forcing the coarse sand stones entering the channel to advance along the channel on one side of the outer dam wall and being pushed into the sediment discharge channel by subsequent floods.

The width of the sediment discharge channel 4 is the same as the width of the channel 12, and the elevation of the sedimentation channel 4 is lower than the elevation of the bottom of the channel 12. A filter plate is provided on the water supply passage 5. Filters the floating debris and grass seeds in the flood.

The invention is constructed close to the mantle and the dam wall on one side of the river channel, and the water supply port is placed at the commanding height of the irrigated farmland, and is extended upward according to the reference, and the numerical value of the longitudinal slope of the river channel is used as a reference for comparison. The vertical slope at the bottom of the channel reaches 100:1, and the address of the water intake should be found. The channel intake is lower than the lowest point of the channel or the minimum water level of the normal water is 30 cm. That is, the dam wall in the channel is a limited dam wall, the top is not flooded by the maximum flood of the river channel, the slope is smaller than the slope at the bottom of the channel, and the outer dam wall is an overflow regulating dam wall, and the channel width is generally 1 meter.

1. It is preferred to take water: the bottom of the channel water intake is lower than the lowest point of the river bed or the minimum water level of the normal water is 30 cm, so that the river water flow preferentially enters the channel.

2. Automatic overflow capacity adjustment: the top of the outer dam wall end of the channel water intake is 40 cm higher than the bottom of the channel. Based on this, it extends downwards along the horizontal line to form an overflow drainage section, and the overflow section is cut off. The dam crest of a small section of the outer dam wall of the square is level with the dam crest of the inner dam wall as the water-retaining pier of the overflow section. The river bed on the overflow part of the overflow discharge section is constructed with a gravity-like sheet and a series of automatic settlement aprons, which are more than 2 meters wide, both as a water-falling aquarium and a channel flood control. When a large flood is encountered in the river, the top of the overflow dam wall of the outer dam wall will be submerged. Due to the limitation of the channel width, excessive floods entering the channel will be evenly discharged into the channel from the entire section.

3. The water flow automatically flushes the clear channel: the bottom of the channel is made of concrete, which is the vertical and horizontal two-way slope. The lateral slope is the slope of the inner high and the low, and the slope is 1:0.1 of the channel width, so that the coarse sand entering the channel The stone runs along the bottom of the side of the outer dam wall, and is smoothly pushed into the sediment discharge channel by subsequent floods.

4. Sediment discharge: that is, the sediment discharge port on the wall of the water-restricted pier with a distance of 2 meters from the cut-off point of the overflow dam section of the outer dam wall, the width is equal to the width of the channel, and the channel is The inner angle of the outer wall of the upper side is 45°, and the bottom is 20 cm lower than the bottom of the channel. It is also a vertical and horizontal two-way slope, which causes the heavy sand in the channel to fall into the channel and is pushed into the river by the subsequent flood. The flakes and the strings are automatically settled in the face and the river. Vertical gullies are formed on the dam walls on both sides of the mouth for replacement of the same ram. When no flood is used, the water flowing into the channel from the daily channel is discharged into the channel from the channel.

5. Self-flowing water supply: that is, a water supply channel is provided on the inner dam wall 2 meters away from the sedimentation discharge channel, and the width is equal to the width of the channel, so that the water flow enters the farmland from the mouthway, and the channel can also be used. A water supply port is added to the inner dam wall at 2 meters downstream to meet the water supply needs.

6. Filtration and drainage with flooding debris and grass seeds: that is, the filter plate is fixedly installed on the inner side of the dam wall outside the channel water supply port. The mesh of the filtering eyes can filter the grass seeds, and does not enter the farmland, the filter sheets can be freely disassembled and preserved. use. The width of the outlet at the end of the channel shrinks to 30 cm and leads to the channel. The outside is provided with a manually operated brake pad that can be pulled left and right and has mechanical properties, so that the residual sediment and floating debris in the channel are from the mouth. The road is randomly discharged into the river and can restrict the discharge of water.

7. Engineering materials: The channels are generally made of stone slurry. The construction area without stone, washed sand and water source allows the manufacturer to use plastics to make container parts with the shape of bricks, sand and sand instead of stone, each piece is glued with waterproof glue, and the bottom of the channel is welded with plastic steel plate.

8. Freezing and swallowing: that is, the channel can use the micro-flood, ice-cold water and constant-flow water in the river channel, and can be adjusted by large-section overflow to adapt to the largest flood utilization in the river.

9. The channel is applied to the water supply and drainage of the sloping flood and silt and farmland soil improvement thickening and flooding project: the water supply port of the dam wall in the channel is enlarged, and after the land is silted, the dam wall can be rebuilt. Increase the channel width.

10. The application of the channel across the tributary channel and the simultaneous use of the main river channel and the tributary channel water supply: the extension of a section of the dam wall of the channel overflow diversion section, so that the top of the extended inner and outer dam wall is level with the river bed of the tributary channel Water-side piers are added to both sides of the inner dam wall to allow the tributary channel flood to pass from the top of the wall between the piers. A silt discharge channel and a gate sluice are added to the outer dam wall of the upper side of the upper side pier so that the flood of the main channel entering the channel can be separately discharged into the channel from the channel.

Claims

An intensive flood irrigation channel characterized by comprising an inner dam wall (1) and an outer dam wall (3), an inner dam wall (1) and an outer dam wall (3) being arranged in parallel, and an inner dam wall ( 1) The channel (12) is between the outer dam wall (3), the channel (12) elevation is lower than the lowest water level of the riverbed, and the outer dam wall (3) is provided with the outer dam wall water-limiting pier (2). ), the water-retaining pier (2) of the outer dam wall is provided with a sediment discharge channel (4), and the outer side of the water-retaining pier (2) of the outer dam wall is provided with an overflow adjustment section (13), Shen On the outer side of the sand discharge Hongkou Road (4), there is a gravity protection channel (8) for the sediment discharge channel, and a channel gate (11) for the downstream of the sediment discharge channel (4), the channel gate (11) The downstream dam wall (1) is provided with a water supply channel (5), and the water supply channel (5) is provided with a water supply port pulling type apron (10), and the water supply channel (5) is downstream. There is a water outlet (6), and the water outlet (6) is provided with a left and right pull gate (7).
The intensive flood irrigation channel according to claim 1, characterized in that the top elevation of the upstream end of the outer dam wall (3) is higher than the top elevation of the downstream end.
The intensive flood irrigation channel according to claim 1 or 2, characterized in that the width of the water outlet channel (6) is smaller than the width of the channel (12).
The intensive flood irrigation channel according to claim 3, characterized in that: the inner dam wall (1) of the channel (12) has an elevation higher than that of the outer dam wall (3).
The intensive flood irrigation channel according to claim 4, characterized in that: the width of the sediment discharge channel (4) is the same as the width of the channel (12), and the sedimentation channel (4) of the sedimentation The elevation is lower than the bottom elevation of the channel (12).
The intensive flood irrigation channel according to claim 5, characterized in that the water supply channel (5) is provided with a filter.