Seepage catchment and anti-seepage bank protection linkage system and method based on platform paddy field

Abstract

The invention relates to irrigation and water conservancy engineering, and discloses a platform paddy field permeation water catchment and anti-seepage bank protection linkage system and method, and the system comprises a water catchment system, a water collection system and a bank anti-seepage system; water catchment systems are uniformly distributed at the bottom of the plow pan of each layer of field except for the lowermost layer of field, and the water catchment systems are used for collecting infiltration water infiltrated from the plow pan; the water collection system is provided with a water collection pipe and a water collection pool, and the water collection pipe is connected with each layer of water catchment system and used for discharging collected seepage water into the water collection pool beside the lowermost layer of field parcel; the field ridge anti-seepage system is composed of an anti-seepage layer arranged in each layer of field ridge and used for isolating the field ridge from being soaked by water in the field steeping process. Irrigation water and underground water are effectively prevented from diffusing into the field ridge, and meanwhile secondary utilization of seepage water is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of farmland water conservancy engineering, and in particular to a linkage system and method based on water collection and anti-seepage bank protection based on terrace paddy fields. Background Art

[0002] Farmland water conservancy engineering technology, groundwater resource management technology and anti-seepage engineering technology are indispensable technical fields in the development of modern agriculture. Farmland water conservancy engineering technology mainly involves farmland irrigation, drainage, soil and water conservation, etc. Its purpose is to improve agricultural production efficiency and ensure the growth environment of crops. Groundwater resource management technology is aimed at the development, utilization and protection of groundwater to ensure the sustainable use of groundwater resources. Field ridge anti-seepage engineering technology mainly uses various materials and methods to prevent water from running off and soaking the field ridge, causing the field ridge to collapse.

[0003] In the implementation of land reclamation and paddy field development projects on slopes, the newly reclaimed paddy fields have problems such as poor water retention on the field surface, serious water loss, poor stability of the field ridges due to water soaking, and easy collapse. In the existing technology, the previous engineering response to the poor water retention and serious water loss of paddy fields mainly adopts anti-seepage lining treatment of irrigation channel systems at all levels, and secondly, sets up water interception and storage structures at the end of the groundwater flow on the field surface to collect groundwater lost from paddy fields; for stability problems such as field ridge collapse, the main support treatment is non-ecological and environmental protection technologies such as masonry materials to reinforce the field ridges and build Bing retaining walls. The existing technology can reduce the water loss of paddy fields and solve the problems of field ridge collapse to a certain extent, but it can only prevent irrigation water and groundwater from leaking out of the field, but it does not solve the problem of irrigation water seepage into the field ridge, which leads to the soaking of the middle and lower parts of the field ridge, affecting the stability and service life of the field ridge. Therefore, for the development of modern agriculture, the existing technology has the disadvantages of poor economic benefits and ecological and environmental disharmony. Summary of the invention

[0004] In view of this, the present invention provides a system and method for water collection and anti-seepage ridge linkage based on terrace paddy fields, which can effectively prevent irrigation water and groundwater from diffusing into the field ridges while realizing the secondary utilization of infiltrated water.

[0005] The present invention is achieved through the following technical scheme: a linkage system based on the seepage water collection and anti-seepage ridge protection of terrace paddy fields, including a water collection system, a water collection system and a field ridge anti-seepage system; except for the lowest field, the bottom of the plow bottom layer of each field layer is equipped with a water collection system, and the water collection system is used to collect the seepage water that seeps from the plow bottom layer; the water collection system is provided with a water collection pipe and a water collection pool, and the water collection pipe is connected to each layer of the water collection system, and is used to discharge the collected seepage water to the water collection pool next to the lowest field layer; the field ridge anti-seepage system is composed of an anti-seepage layer arranged inside each layer of the field ridge, and is used to isolate the field ridge from being soaked by water during the field soaking process.

[0006] Furthermore, the water collection system includes a water collection pipe and a filter layer. With the center line of each field plot as the axis, a number of water collection pipes are symmetrically arranged on both sides of the axis, the water collection pipes on the same side are parallel to each other, and the water collection pipes are inclined from the two ends of the field plot to the middle of the field plot, and all the water collection pipes of each layer of fields are located in the same straight line at one end in the middle of the field plot, and this end is the end of the water collection pipe; the part above the axis of the water collection pipe is provided with water collection holes, and the filter layer is wrapped around the outer periphery of the water collection pipe; the water collection pipe is divided into a longitudinal water collection pipe and a connecting water collection pipe. The longitudinal water collection pipe of each layer of fields is in the same line with the line connecting the ends of the water collection pipes of the field plots of the layer, and is connected with the ends of all the water collection pipes of the field plots of the layer; the longitudinal water collection pipes of each layer of fields are connected through connecting water collection pipes, and are finally connected to the water collection pool through connecting water collection pipes.

[0007] Furthermore, the spacings between adjacent water collecting pipes on the same side are the same, and the elevations are gradually reduced along the descending direction of the terrace paddy field.

[0008] Furthermore, the anti-seepage layer is constructed by paving anti-seepage materials from the ridge toward the top of the side wall of the field layer downward until the bottom of the plow bottom layer of the field layer is laid, and then continues to be laid along the bottom of the plow bottom layer toward the inside of the field for a certain distance.

[0009] Furthermore, the ends of the water collecting pipes at both ends of the field are closed, and the distance between adjacent water collecting pipes on the same side is 500-800 cm; the diameters of the water collecting pipes and the water collecting pipes are both 10-20 cm.

[0010] A method for water collection and anti-seepage protection based on terrace paddy fields, the steps are as follows: S1: before the plow bottom layer compaction process of the newly reclaimed terrace paddy field, except for the lowest field, a trench for a water collection pipe is dug from top to bottom under the plow bottom layer on the field surface of each field, according to a certain slope. Starting from the second row of water collection pipes, the starting elevation of the foundation trench of each row of water collection pipes is reduced by 10 cm according to the starting elevation of the previous row of water collection pipes. The transverse slope of the foundation trench of the water collection pipes in each row is kept consistent. A filter layer is arranged circumferentially in the foundation trench of the water collection pipes, and part of the filter layer is reserved. Then, the water collection pipes are buried in the foundation trench of the water collection pipes and above the filter layer. After the water collection pipes are laid, the reserved part of the filter layer is used to fully cover the water collection pipes; S2: The longitudinal layout is carried out based on the end position of the water collection pipes. The trench is dug Longitudinal water collecting pipe foundation trench is laid, and longitudinal water collecting pipes are connected with each row of water collecting pipes through tees or crosses. Trench is dug at each ridge position to connect the water collecting pipe foundation trench, and connecting water collecting pipes are laid to connect with the longitudinal water collecting pipes in each layer of field blocks, so as to complete the arrangement of water collecting pipes and trim the plow bottom layer; S3: Inside the ridge of each layer of field block, anti-seepage material is laid from the ridge toward the top of the side wall of the layer of field block downward until the bottom of the plow bottom layer of the layer of field block, and then the plow bottom layer is extended 100cm toward the inside of the field block to continue laying; after laying, the plow bottom layer is compacted, the tillage layer is covered with soil, and the ridge is built; S4: A water collecting pool is built next to the field surface of the lowest layer of the terrace, and the water collecting pipe is connected to the water collecting pool.

[0011] Furthermore, the slope of the water collection pipe foundation trench in S1 is 1%-3%.

[0012] Furthermore, it is characterized in that the anti-seepage material in S3 adopts composite geomembrane.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. The present invention collects infiltration water through a water collection system and collects it into a water collection pool through a water collection system, which effectively prevents the infiltration water in the field from diffusing and soaking the middle and lower parts of the field ridges. At the same time, the infiltration water in the water collection pool can be reused for a second time. An anti-seepage layer is buried in the field ridge, which can isolate the water from soaking the middle and upper parts of the field ridges during the field soaking process, thereby improving the stability and service life of the field ridges.

[0015] 2. The water collection pipe of the present invention is arranged at the bottom of the plow bottom layer, and the infiltrated water is collected into the water collection pipe through the water collection holes. Since the water collection pipe is inclined from both sides of the field to the middle, the water is quickly and efficiently discharged from the water collection pipe to the water collecting pipe, and then discharged into the water collecting pool, thereby preventing the infiltrated water from damaging the middle and lower part of the field ridge, and effectively collecting and utilizing the infiltrated water.

[0016] 3. The anti-seepage layer of the present invention is composed of two planes on which anti-seepage materials are laid, which not only prevents the plow bottom layer from seeping water into the bottom of the field ridge, but also prevents the water from damaging the middle and upper parts of the field ridge when the field is flooded.

[0017] 4. The systems deployed by the present invention do not cause damage to the soil quality and ecosystem. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a stereogram of the present invention.

[0019] Figure 2 It is a cross-sectional view of the present invention.

[0020] Figure 3 This is a plan view of the present invention.

[0021] Figure 4 Detailed diagram of the manifold and collection pipe.

[0022] Among them, 1 - water collection pipe, 2 - water collection pipe, 3 - field ridge, 4 - field edge, 5 - field surface, 6 - water collection pool, 7 - anti-seepage material, 8 - filter layer, 9 - tillage layer, 10 - plow bottom layer. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0024] The terraced paddy fields are terraced fields, which are composed of layers of fields with different elevations. The surface of each layer of fields is a horizontal and flat field surface 5, and below the field surface 5 are the tillage layer 9 and the plow bottom layer 10. Each field is surrounded by ridges 3, and the ridges 3 between the upper and lower layers of fields are called field ridges 4.

[0025] The present invention provides a linkage system based on the seepage water collection and anti-seepage protection of terrace paddy fields, such as Figure 1 As shown, the system is realized by the linkage of three systems, namely the water collection system for collecting groundwater infiltration in the field, the water collection system for discharging the infiltrated water, and the field ridge anti-seepage system.

[0026] Except for the lowest layer of fields, a water collection system is arranged under the bottom of the plow bottom layer 10 of each layer of fields, and the water collection system is used to collect the seepage water that seeps down from the plow bottom layer 10; the water collection system is provided with a water collection pipe 2 and a water collection pool 6, and the water collection pipe 2 is connected to each layer of the water collection system, and is used to discharge the collected seepage water into the water collection pool 6; the field ridge anti-seepage system is composed of an anti-seepage layer arranged inside each layer of field ridge 4, which is used to isolate the field ridge 4 from being soaked by water during the field soaking process.

[0027] Specifically, the water collection system includes a water collection pipe 1 and a filter layer 8. The field is divided into two along the horizontal extension direction from the upper field to the lower field, with the center line of the field as the axis, the center line is parallel to the extension direction, and a number of water collection pipes 1 are symmetrically arranged on both sides of the axis. The water collection pipes 1 on the same side are parallel to each other, and the water collection pipes 1 are inclined from the two ends of the field to the middle of the field, that is, the water collection pipes 1 on both sides are arranged according to a certain transverse slope, and the slope direction is from the two ends of the field to the middle of the field, and the slope can be 1%-3%. The spacing between adjacent water collection pipes 1 in the field on the same side is the same, and the spacing can be 5-8m according to the different widths of the field surface 5. The width refers to the distance from the field surface 5 along the horizontal extension direction of the upper field to the lower field.

[0028] like Figure 2 As shown, the elevation of the water collection pipes 1 is gradually reduced along the descending direction of the terrace paddy field. For example, the elevation of the starting point of the second row of water collection pipes 1 is reduced by 10 cm based on the elevation of the starting point of the first row of water collection pipes 1 (the end of the water collection pipes 1 located at both ends of the field), and then the slope is reduced toward the middle of the field according to the slope of the first row of water collection pipes 1, that is, the slope of each row of water collection pipes 1 is the same, and the end (terminal end) located in the middle of the field is in the same straight line.

[0029] like Figure 4 As shown, the ends of the water collection pipe 1 on both sides of the field are closed, and the part above the axis of the water collection pipe 1 (upper part) is provided with water collection holes, which are evenly distributed. In this embodiment, the spacing between adjacent water collection holes forms a plum blossom shape, and the filter layer 8 is coaxially wrapped around the outer periphery of the water collection pipe 1; the diameters of the water collection pipe 1 and the water collecting pipe 2 are both 10-20 cm.

[0030] like Figure 3As shown, the water collecting pipe 2 is divided into a longitudinal water collecting pipe and a connecting water collecting pipe. The longitudinal water collecting pipe of each layer of field overlaps with the connecting line of the ends of all the water collecting pipes 1 of the field, and is connected with the ends of all the water collecting pipes 1 of the field. The longitudinal slope of the water collecting pipe 2 is determined according to the layout of the water collecting pipe 1. The longitudinal water collecting pipes of each layer of field are connected through the connecting water collecting pipe, and finally connected to the water collecting pool 6 through the connecting water collecting pipe. The water collecting pool 6 can be set next to the lowest field. In general, the water collecting pipes 1 in each field surface 5 are arranged symmetrically with the longitudinal water collecting pipe as the boundary. The water collecting pipe 1 is connected to the longitudinal water collecting pipe through a tee or a cross. The water collecting pipes 1 on the left and right sides collect water to the middle longitudinal water collecting pipe, and then flow to the connecting water collecting pipe. Through the connecting water collecting pipe, it flows to the water collecting pool 6. The water collecting system and the water collecting system effectively avoid the soaking of the middle and lower part of the field ridge 4 by the infiltration water. According to the production water demand, the water in the water collection tank 6 is lifted to the water source of the irrigation system by water lifting equipment for secondary utilization of water resources.

[0031] The anti-seepage layer is formed by laying the anti-seepage material 7. Inside the ridge 4 of each field, the anti-seepage material is laid from the ridge 4 toward the top of the side wall of the field layer, until the bottom of the plow bottom layer 10 of the field layer is laid, and then the anti-seepage material is continuously laid horizontally along the bottom of the plow bottom layer 10 for a certain distance toward the inside of the field. In a specific implementation, it can be laid vertically downward from the top of the side wall of the ridge 4 to the bottom of the plow bottom layer 10, or preferably, it can be laid obliquely downward along the inclination angle of the side wall of the ridge 4 to the bottom of the plow bottom layer 10. In this embodiment, it extends 100 cm along the bottom of the plow bottom layer 10 toward the inside of the field. The anti-seepage layer not only prevents the water from penetrating the plow bottom layer 10 from soaking the bottom of the ridge 4, but also prevents the water from damaging the middle and upper parts of the ridge 4 when the field is soaked.

[0032] The present invention provides a method for collecting water through seepage and protecting bank from seepage based on terrace paddy fields, and the construction steps are as follows:

[0033] S1: Before compacting the plow bottom layer 10 of the newly reclaimed sloping terrace paddy field, except for the lowest field, taking the single-layer terrace field as an example, dig a trench for the water collection pipe 1 at the position where the water collection pipe 1 needs to be arranged under the plow bottom layer 10 of the field surface 5 according to the horizontal slope of 1% to 3% from top to bottom (the horizontal slope refers to the slope from the two ends of the field to the middle of the field). From the second row of water collection pipe trenches, the starting elevation of each row of water collection pipe trenches is reduced by 10 cm according to the elevation of the previous row point, and the horizontal slope of the water collection pipe trenches in each row is kept consistent. A filter layer 8 is arranged on the inner periphery of the water collection pipe trench, and the filter layer 8 reserves a portion that wraps the water collection pipe 1 above the axis, and then the water collection pipe 1 is buried in the trench and placed on the filter layer 8. After the water collection pipe 1 is laid, the reserved portion of the filter layer 8 is used to fully cover the exposed portion of the water collection pipe 1, wherein the upper half of the water collection pipe 1 is circumferentially arranged with plum blossom-shaped water collection holes.

[0034] S2: longitudinal layout is carried out based on the water outlet position at the end of all the water collecting pipes 1, the longitudinal water collecting pipe foundation trench is dug, and then the longitudinal water collecting pipe is laid out. Each row of water collecting pipes 1 is connected to the longitudinal water collecting pipe through a tee or a cross. A trench is dug below the field ridge 4 to connect the water collecting pipe foundation trench, and the connecting water collecting pipe is laid out to connect with the longitudinal water collecting pipe in the field. The arrangement of the water collecting pipe 2 is completed, and then the plow bottom layer 10 finishing process is carried out.

[0035] S3: Before compacting the plow bottom layer 10 and building the field ridge 4, construct a field ridge anti-seepage system. Inside the field ridge 4 of each field layer, lay the anti-seepage material 7 from the field ridge 4 to the top of the side wall of the field layer downward until the bottom of the plow bottom layer 10 of the field layer, and then continue to lay the anti-seepage material 7 along the bottom of the plow bottom layer 10 horizontally extending 100 cm toward the field direction. The anti-seepage material 7 includes but is not limited to composite geomembranes and other materials. In specific implementation, it can be laid vertically downward along the top of the side wall of the field ridge 4 until the bottom of the plow bottom layer 10, or preferably, it can be laid obliquely downward along the inclination angle of the side wall of the field ridge 4 until the bottom of the plow bottom layer 10; after laying, the plow bottom layer 10 is compacted, the tillage layer 9 is covered with soil, and the field ridge 4 is built.

[0036] S4: A water collecting pool 6 is built next to the field surface 5 of the lowest layer of the sloping terrace. The water collecting pipe 2 is connected to the water collecting pool 6, and the tail water in the water collecting pipe 2 is discharged into the water collecting pool 6.

[0037] After all the processes are completed, the paddy fields are used for rice planting and flooding. At this stage, the system of the present invention works to collect and gather the seepage water from the plow bottom layer 10, and finally the seepage water flows into the water collection pool 6. According to the production water demand, the water in the water collection pool 6 is pumped to the water source of the irrigation system through water lifting equipment for secondary utilization of water resources.

[0038] The present invention solves the engineering problem of collapse of the upper, middle and bottom parts of the field ridge 4 due to immersion in water caused by the failure of newly reclaimed paddy fields to retain water by arranging a water collection system and a field ridge anti-seepage linkage, optimizes the protection measures for the field ridge 4 in previous projects, and at the same time, the present invention adopts concealed engineering implementation, does not affect the coordination of the agricultural ecological environment, and improves economic benefits; secondly, the lost water is collected and reused, collected in a water collection pool 6, and then reused through water lifting equipment, effectively improving the utilization rate of water resources; thirdly, the water collection system and the field ridge anti-seepage protection system are coupled with each other and work together to form a simple, highly operational and environmentally friendly system, which can simultaneously solve the water loss of newly reclaimed paddy fields and the immersion and collapse of the field ridge 4; and the present invention does not cause damage to the soil quality and the ecosystem.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A linkage system based on seepage water collection and anti-seepage protection of terrace paddy fields, characterized in that: Including water collection system, water collection system and field ridge anti-seepage system; Except for the lowest field, a water collection system is arranged at the bottom of the plow bottom layer of each field, and the water collection system is used to collect the seepage water from the plow bottom layer; the water collection system is provided with a water collection pipe and a water collection tank, and the water collection pipe is connected to each layer of the water collection system, and is used to discharge the collected seepage water to the water collection tank next to the lowest field; The field ridge anti-seepage system consists of an anti-seepage layer set inside each field ridge, which is used to prevent water from soaking the field ridges during the field flooding process.

2. The platform paddy field seepage water collection and anti-seepage sill protection linkage system according to claim 1, characterized in that: The water collection system includes a water collection pipe and a filter layer. With the center line of each field as the axis, several water collection pipes are symmetrically arranged on both sides of the axis. The water collection pipes on the same side are parallel to each other and inclined from the two ends of the field to the middle of the field. All the water collection pipes of each layer of field are located in the same straight line at one end in the middle of the field, which is the end of the water collection pipe; the part above the axis of the water collection pipe is provided with a water collection hole, and the filter layer is wrapped around the outer periphery of the water collection pipe; The water collecting pipes are divided into longitudinal water collecting pipes and connecting water collecting pipes. The longitudinal water collecting pipes of each layer of fields are in the same line as the connecting line of the ends of the water collecting pipes of the layers of fields, and are connected with the ends of all the water collecting pipes of the layers of fields; the longitudinal water collecting pipes of each layer of fields are connected through connecting water collecting pipes, and finally connected to the water collecting pool through connecting water collecting pipes.

3. The platform paddy field seepage water collection and anti-seepage sill protection linkage system according to claim 2, characterized in that: The spacing between adjacent water collection pipes on the same side is the same, and their elevations decrease one by one along the direction of the descending height of the terrace paddy field.

4. The terrace paddy field seepage water collection and anti-seepage sill protection linkage system according to claim 1, characterized in that: The anti-seepage layer is made of anti-seepage materials, which are laid from the ridge toward the top of the side wall of the field layer downward until the bottom of the plow bottom layer of the field layer is reached, and then continue to be laid along the bottom of the plow bottom layer toward the inside of the field for a certain distance.

5. The terrace paddy field seepage water collection and anti-seepage sill protection linkage system according to any one of claims 1 to 4, characterized in that: The ends of the water collection pipes at both ends of the field are closed, and the distance between adjacent water collection pipes on the same side is 500-800cm; the diameters of the water collection pipes and water collecting pipes are both 10-20cm.

6. A method for collecting water from terraced paddy fields and preventing seepage from entering the embankment, characterized in that: Here are the steps: S1: Before the plow bottom layer compaction process of the newly reclaimed terrace paddy field, except for the lowest field, the foundation trench of the water collection pipe is dug from top to bottom at a certain slope under the plow bottom layer of each field. Starting from the second row of water collection pipes, the starting elevation of the foundation trench of each row of water collection pipes is reduced by 10 cm according to the starting elevation of the previous row of water collection pipes. The transverse slope of the foundation trench of the water collection pipes in each row is kept consistent. The filter layer is laid circumferentially in the foundation trench of the water collection pipes, and part of the filter layer is reserved. Then the water collection pipes are buried in the foundation trench of the water collection pipes and above the filter layer. After the water collection pipes are laid, the reserved part of the filter layer is used to fully cover the water collection pipes; S2: Based on the end position of the water collecting pipe, longitudinal layout is carried out, trenches are dug for longitudinal water collecting pipe foundations, longitudinal water collecting pipes are laid, longitudinal water collecting pipes are connected with each row of water collecting pipes through tees or crosses, trenches are dug for connecting water collecting pipe foundations at each field ridge position, connecting water collecting pipes are laid and connected with longitudinal water collecting pipes in each layer of field, the arrangement of water collecting pipes is completed, and the bottom layer of the plow is trimmed; S3: Inside the ridge of each layer of field, anti-seepage material is laid from the ridge toward the top of the side wall of the layer of field downward to the bottom of the plow bottom layer of the layer of field, and then the plow bottom layer is extended 100 cm toward the inside of the field to continue laying; after the laying is completed, the plow bottom layer is compacted, the tillage layer is covered with soil, and the ridge is built; S4: Build a water collection pool next to the field surface at the bottom of the terrace, and connect the water collection pipe to the water collection pool.

7. The method for collecting water from terraced paddy fields and preventing seepage from entering the terraced paddy fields according to claim 6, characterized in that: The slope of the water collection pipe foundation trench in S1 is 1%-3%.

8. The method for collecting water from seepage and protecting bank from seepage in terraced paddy fields according to claim 6 or 7, characterized in that: The anti-seepage material in S3 is composite geomembrane.

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