CN222065383U - Water inlet and outlet device of rice and fish system - Google Patents

Abstract

The utility model provides a water inlet and outlet device of a rice and fish system, which is arranged on a straight paddy field channel with a single section in a flood storage area, and comprises a gate body and two blocking wing walls respectively arranged at two sides of the gate body, wherein the gate body comprises an upstream Reynolds protection pad bottom and an upstream seepage-proofing cover which are arranged at the joint of a river and a embankment, a gate chamber arranged on the embankment, a downstream stilling pool, a concrete sea, a Reynolds protection pad sea, a washing-proofing wall and an irregular precast block flushing-proofing groove which are arranged at the joint of the paddy field and the embankment, gate foundation soil and a gate foundation plate are arranged at the bottom of the gate chamber, the gate foundation soil is divided into a silt clay layer, a silt clay layer and a sand gravel layer from top to bottom, and the gate foundation plate is arranged on the silt clay layer, and the top elevation of the gate foundation plate is flush with the surface elevation of the paddy field. The utility model can control the flow of water, ensure the water level, ensure the water outlet to be smooth and even, help farmers to cope with climate change and fluctuation of rainfall, and ensure the stability of the rice and fish system.

Description

Water inlet and outlet device of rice and fish system

Technical Field

The utility model belongs to the technical field of agriculture, forestry and water conservancy, and particularly relates to a water inlet and outlet device of a rice and fish system.

Background

The rice and fish are a traditional Chinese agricultural cultivation mode, mainly based on paddy fields, and cultivated fishes are combined with paddy field planting to form a reciprocal symbiotic ecological system. The mode is characterized in that the ecological coordination between the paddy field and the fishes is realized by cultivating the fishes in the paddy field, and the efficient utilization of resources is promoted. The basic principle of rice and fish is that fish is introduced into paddy field, and the fish forges and grows in water and helps to clean weeds, pests and the like in paddy field, so that the ecological system of paddy field is maintained. In turn, rice seedlings provide a shelter and habitat for the fish, while insects, algae, etc. in the rice field also provide food for the fish.

The common rice and fish system mainly comprises: ① Synchronous cultivation mode, in which rice and fish are cultivated and cultivated simultaneously in the same field. This can be achieved by adding fish ponds to the paddy field or constructing a suitable water system. ② In the rotation mode, rice and fish are alternately planted and cultivated on the same land. In rice seasons, the fields are used for rice planting; after harvesting rice, fish is introduced into the water body for cultivation. ③ The mode of fish farming in the irrigation field is a mode achieved by introducing fish into irrigation water. Fish can be introduced into water beside or downstream of the paddy field for cultivation, and the fish is brought into the paddy field through irrigation water, so that reciprocal symbiosis of the paddy field and the fish is realized.

The rice and the fish can not only improve the yield of farmlands, but also reduce the use of pesticides, improve the water quality and increase the income of farmers, and have environmental protection and economic benefits. This mode is widely adopted in some areas to promote sustainable agriculture development.

At present, the flood storage area belongs to an important polder area, the polder area is a unique form of farmland development created by people in long-term water control practice in plain areas, the flood storage area can be used as an area where cultivated fish and paddy field planting are combined, the topography of the flood storage area is flat, the topography is low, compared with a common paddy field, water flow is more difficult to control, a rice and fish system usually needs to regularly discharge water, corresponding water level is guaranteed, water outlet leveling is required to be smooth and uniform, water circulation is further guaranteed, proper water quality and ecological environment are maintained, and in the related technology, the flood storage area lacks a specific water inlet and drainage device design.

Disclosure of utility model

According to the defects of the prior art, the utility model aims to provide the water inlet and outlet device of the rice-fish system, which is used for establishing a sluice on a channel which is straight and has a single section in a paddy field in a flood storage area, controlling the flow of a water body, ensuring the water level, ensuring the smooth and even water outlet level, helping farmers to cope with climate change and fluctuation of rainfall and ensuring the stability of the rice-fish system.

In order to solve the technical problems, the utility model adopts the following technical scheme:

a water intake and drainage device of a rice and fish system, which is arranged on a straight channel with a single section of a paddy field in a flood storage area, comprising:

The gate body comprises an upstream Reynolds pad bottom, an upstream seepage-proofing cover, a gate chamber, a downstream absorption basin, a concrete sea surface, a Reynolds pad sea surface, a washing-proof wall and an irregular precast block anti-flushing groove which are sequentially arranged from a river to a paddy field, wherein the upstream Reynolds pad bottom and the upstream seepage-proofing cover are arranged at the joint of the river and a embankment, the gate chamber is arranged on the embankment, the downstream absorption basin, the concrete sea surface, the Reynolds pad sea surface, the washing-proof wall and the irregular precast block anti-flushing groove are arranged at the joint of the paddy field and the embankment, concrete precast block slope protection is arranged at two sides of the upstream Reynolds pad bottom, and concrete precast block slope protection is arranged at the outer sides of the Reynolds pad sea surface and the irregular precast block anti-flushing groove;

Two wing blocking walls respectively arranged at two sides of the gate body;

The bottom of the gate chamber is provided with gate foundation soil and a gate bottom plate, the gate foundation soil is divided into a silt clay layer, a silt clay layer and a sand gravel layer from top to bottom, the top elevation of the gate bottom plate is flush with the elevation of the paddy field ground, and the gate bottom plate is arranged on the silt clay layer.

Further, the gate chamber is of an open structure, and the gate bottom plate is a flat bottom plate.

Further, the gate chamber comprises a gate bottom plate, gate piers, gates and a traffic bridge, wherein the gate piers are fixed on the gate bottom plate, the gates are rotatably arranged on the gate piers, and the traffic bridge is arranged at the tops of the gate piers.

Further, the gate is a planar gate.

Further, two sides of the lock chamber are connected in a one-to-two mode, and the middle of the lock chamber is connected in a one-to-one mode.

Further, the downstream stilling pool is connected with the gate bottom plate with a slope of a preset angle.

Further, the downstream stilling pool and the concrete sea diffusion bottom plate are both provided with a reverse filtering layer, and the reverse filtering layer comprises a broken stone cushion layer, a melon and rice stone cushion layer and a coarse sand cushion layer which are arranged from top to bottom.

Further, the wing walls comprise an upstream wing wall and a downstream wing wall, the upstream wing wall is arranged on two sides of an upstream seepage-proofing pavement, the downstream wing wall is arranged on two sides of a downstream stilling pool and a concrete sea, concrete precast block revetments are arranged on two sides of a bottom protection of an upstream Reynolds protection pad, and concrete precast block revetments are arranged on the outer sides of a sea and irregular precast block seepage-proofing groove of the Reynolds protection pad.

Further, the independent connection part of the upstream wing wall and the concrete precast block slope protection is a straight section, the connection part of the upstream wing wall, the upstream Reynolds protection pad bottom protection and the upstream impermeable pavement is an arc section, the independent connection part of the upstream impermeable pavement is a straight section, and the upstream wing wall is in an inward splayed shape relative to the bank.

Further, the junction of the downstream wing wall and the downstream stilling pool is a straight section, the junction of the downstream wing wall and the concrete sea-cover is an arc section, the junction of the downstream wing wall and the reynolds protection pad sea-cover is a straight section, and the downstream wing wall is splayed inwards relative to the embankment.

Compared with the prior art, the utility model has the following advantages and beneficial effects:

the water inlet and outlet device of the rice and fish system is selected on a channel with straight channel and single section of the rice field, so that water inlet and outlet flows are smooth and uniform as much as possible, drift or water flow folding is avoided, and harmful scouring and siltation are prevented.

The upstream Reynolds pad bottom protection, the upstream seepage prevention covering, the gate chamber, the downstream stilling pool, the concrete sea, the Reynolds pad sea and the irregular precast block anti-flushing groove are sequentially arranged from the river to the paddy field, the upstream Reynolds pad bottom protection and the upstream seepage prevention covering are arranged at the joint of the river and the embankment, the gate chamber is arranged on the embankment, and the downstream stilling pool, the concrete sea, the Reynolds pad sea and the irregular precast block anti-flushing groove are arranged at the joint of the paddy field and the embankment, so that the drainage capacity is improved and the construction is convenient.

In addition, in order to strictly control the water level, prevent water from leaking from the gate foundation soil, help farmers to cope with climate change and fluctuation of rainfall, and ensure the stability of a rice and fish system, the bottom of the gate chamber is provided with the gate foundation soil and the gate bottom plate, the gate foundation soil is divided into a silt clay layer, a silt clay layer and a sand gravel layer from bottom to top, the top elevation of the gate bottom plate is level with the elevation of the paddy field ground, and the gate bottom plate is arranged on the silt clay layer.

In addition, because fine particle mud sand is deposited for a long time due to flood in the flood storage area, in order to prevent water and soil loss and be more beneficial to a rice and fish system, the utility model is provided with an upstream Reynolds protection pad for bottom protection and a Reynolds protection pad for sea diffusion, the water flow can be effectively prevented from scouring the river bank or the bottom of the reservoir, so that the river bank or the bottom of the reservoir is protected from being corroded, and meanwhile, the Reynolds protection pad can also effectively reduce the scouring of the water flow to surrounding soil, so that the water loss and soil erosion are reduced. The anti-flushing groove of the concrete sea-diffusion and irregular precast block is used for protecting the river bed in the water jump range from flushing, further eliminating the residual kinetic energy of water flow, protecting the river bed from the harmful flushing of the water flow, further controlling the flow of water body, ensuring the water level, ensuring the water outlet to be smooth and uniform and protecting the rice and fish system.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model, and are incorporated in and constitute a part of this specification. The exemplary embodiments of the present utility model and the descriptions thereof are for explaining the present utility model and do not constitute an undue limitation of the present utility model. In the drawings:

Fig. 1 is a top view of the present utility model.

Fig. 2 is a side view of the present utility model.

Fig. 3 is a front view of the lock chamber of the present utility model.

Wherein, 1, the upstream Reynolds protection pad protects the bottom; 2. upstream impermeable covering; 3. a lock chamber; 31. a gate bottom plate; 32. a gate pier; 33. a gate; 34. a traffic bridge; 35. gate foundation soil; 351. a silty clay layer; 352. a silty clay layer; 353. a layer of gravel; 4. a downstream stilling pool; 5. concrete sea diffusion; 6. the Reynolds protection pad is diffused in the sea; 7. irregular prefabricated block anti-punching groove; 8. wing walls; 81. an upstream wing wall; 82. a downstream wing wall; 9. slope protection of the concrete precast block; 10. anti-wash wall; 11. a bank; 12. a bank wall.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

The utility model provides a water inlet and outlet device of a rice and fish system, which is arranged on a straight and single-section channel of a paddy field in a flood storage area as shown in fig. 1 and 2 and comprises a gate body and two blocking wing walls 8 respectively arranged at two sides of the gate body.

As shown in fig. 1 and 2, the gate body comprises an upstream reynolds pad bottom 1, an upstream seepage-proofing paving 2, a gate chamber 3, a downstream stilling pool 4, a concrete sea 5, a reynolds pad sea 6, a wash-proofing wall 10 and an irregular precast block anti-flushing groove 7 which are sequentially arranged from a river to a paddy field, wherein the upstream reynolds pad bottom 1 and the upstream seepage-proofing paving 2 are arranged at the joint of the river and a bank 11, the gate chamber 3 is arranged on the bank 11, and the downstream stilling pool 4, the concrete sea 5, the reynolds pad sea 6 and the irregular precast block anti-flushing groove 7 are arranged at the joint of the paddy field and the bank 11.

As shown in fig. 1 and 2, two blocking wing walls 8 are respectively arranged at two sides of the gate body.

As shown in fig. 3, the bottom of the sluice chamber 3 is provided with sluice foundation soil 35 and sluice bottom plate 31, the sluice foundation soil 35 is divided into a silt clay layer 351, a silt clay layer 352 and a gravel layer 353 from top to bottom, the top elevation of the sluice bottom plate 31 is flush with the elevation of the paddy field ground, and the sluice bottom plate 31 is arranged on the silt clay layer 351.

The present utility model selects the water inlet and outlet device of the rice and fish system on the straight channel with single section of the paddy field channel, which can make the water inlet and outlet flow smooth and uniform as much as possible, avoid the generation of bias flow or folding water flow and prevent harmful scouring and siltation.

The upstream Reynolds pad bottom 1, the upstream seepage-proofing cover 2, the lock chamber 3, the downstream stilling pool 4, the concrete sea 5, the Reynolds pad sea 6 and the irregular precast block anti-flushing groove 7 are sequentially arranged from the river to the rice field, the upstream Reynolds pad bottom 1 and the upstream seepage-proofing cover 2 are arranged at the joint of the river and the embankment 11, the lock chamber 3 is arranged on the embankment 11, and the downstream stilling pool 4, the concrete sea 5, the Reynolds pad sea 6 and the irregular precast block anti-flushing groove 7 are arranged at the joint of the rice field and the embankment 11, so that the drainage capacity is improved and the construction is convenient.

In addition, in order to strictly control the water level, prevent water from leaking out of the gate foundation soil 35, help farmers cope with climate change and fluctuation of rainfall, and ensure the stability of the rice and fish system, the bottom of the gate chamber 3 is provided with the gate foundation soil 35 and the gate bottom plate 31, the gate foundation soil 35 is divided into a silt clay layer 351, a silt clay layer 352 and a sand gravel layer 353 from bottom to top, the top elevation of the gate bottom plate 31 is level with the elevation of the paddy field ground, and the gate bottom plate 31 is arranged on the silt clay layer 351.

In addition, because fine particle silt brought by flood in the flood storage area is deposited for a long time, in order to prevent water and soil loss and be more beneficial to a rice and fish system, the utility model is provided with the upstream Reynolds protection pad bottom protection 1 and the Reynolds protection pad sea diffusion 6, so that water flow can be effectively prevented from scouring the river bank or the bottom of the reservoir, thereby protecting the river bank or the bottom of the reservoir from erosion, and simultaneously, the Reynolds protection pad can also effectively reduce the scouring of water flow to surrounding soil, thereby reducing water and soil loss. The concrete sea surface 5 and the irregular precast block anti-flushing groove 7 are arranged and used for protecting a river bed in a water jump range from flushing, further eliminating residual kinetic energy of water flow, protecting the river bed from damaging flushing of the water flow, further controlling the flow of water, guaranteeing the water level, ensuring the water outlet leveling to be uniform and protecting a rice and fish system.

An embodiment of the water intake and drainage device of the rice and fishing system in a flood storage area will be described in detail.

In the present utility model, as shown in fig. 3, the structure of the lock chamber 3 is an open type structure, which is advantageous in improving drainage capacity, reducing substrate stress, and facilitating construction.

The total free width of the gate chamber 3 is 40.00m and the total width is 48.40m.

In the present utility model, as shown in fig. 3, the gate chamber 3 includes a gate base plate 31, gate piers 32, gates 33, and a bridge 34, the gate piers 32 are fixed to the gate base plate 31, the gates 33 are rotatably provided to the gate piers 32, and the bridge 34 is provided at the top of the gate piers 32.

The height of the gate should not be lower than the design maximum water level. Meanwhile, as shown in fig. 1, the beam bottom Gao Chengying of the gate-top bridge 34 is higher than the designed highest water level, and the top of the bridge 34 is flush with the gate top. In addition, the settlement of the gate base on the foundation and other uncertainty factors should be considered and some margin should be left.

In addition, as shown in fig. 3, a flat plate is used as the gate plate 31. The flat bottom plate is the most commonly used type of bottom plate in engineering, simple in construction, convenient in construction, and has a certain adaptability to different foundations, and the front end and the rear end of the gate bottom plate 31 are all provided with tooth grooves. The choice of the elevation of the gate bottom plate 31 is mainly dependent on the topography and geological conditions of the river bed and the engineering quantity. The higher gate bottom plate 31 elevation is preferably adopted as much as possible under the condition of the river bed topography to reduce the construction cost. In the embodiment of the utility model, the height of the gate bottom plate 31 is 7.50m, the height of the gate top is 16.50m, the downstream length of the gate bottom plate 31 is 16.00m, the thickness is 1.50m, and tooth grooves with the depth of 1.50m are arranged at the front end and the rear end.

As shown in fig. 3, the gate pier 32 is divided into a two-hole one-by-one-hole + one-hole one-by-one structure, specifically, two sides of the gate chamber 3 are two-hole one-by-one, and the middle is one-hole one-by-one, so that the drainage efficiency can be increased, each hole is provided with an independent gate 33, and the opening and closing of the gate 33 in each hole can be independently controlled, so that the water level can be conveniently adjusted by a manager as required. The sluice construction is economical and reasonable when the width of the sluice hole is 8-12 m. Meanwhile, considering the requirement that odd holes are adopted when the number of holes is small, the gate is 5 holes, and the width of a single hole is 8.0m.

In the utility model, as shown in fig. 3, the gate 33 is a planar gate 33, and the planar gate 33 has a simple structure, can adapt to a larger water blocking height, and can adapt to the water blocking and overcurrent requirements of the downstream stilling pool 4.

Considering that the water retaining head of the rice and fish channel is smaller, the water draining requirement exists before the rice is mature, the two-way water retaining and overcurrent requirements exist, in order to reduce the length of the gate chamber 3 and save the engineering quantity, a plane gate 33 is selected, the hoist is a fixed hoist, one gate is arranged, the hoist platform elevation is 28.20m, and the cross section size of the hoist girder is 0.40 multiplied by 1.00m.

In the utility model, as shown in fig. 1 and 2, the upstream impermeable cover 2 is of a reinforced concrete structure, the upstream end of the upstream impermeable cover 2 is provided with an upstream Reynolds pad sole protector 1, the upstream impermeable cover 2 is 10.00m long, the upstream end of the upstream impermeable cover 2 is provided with a slurry stone sole protector with the length of 10.00m and the thickness of 0.40m, and the upstream of the sole protector is smoothly connected with an upstream riverbed in a slope ratio of 1:10.

In the utility model, as shown in fig. 1 and 2, the downstream stilling pool 4 is a downward digging stilling pool, the downstream stilling pool 4 is connected with the gate bottom plate 31 by a slope with a preset angle, the depth of the pool is 1.00m, the total length is 16.00m, the length of the slope section is 4.00m, the slope ratio is 1:4, so that the stability of water flow can be improved, the resistance of water flow can be reduced, the residence time of water flow can be prolonged, and the safety of the gate chamber 3 can be improved.

In the utility model, as shown in fig. 1 and 2, a downstream stilling pool 4 is connected with a concrete sea surface 5 as a bottom protection, the concrete sea surface 5 is a water permeable plate structure, the concrete sea surface 5 is connected with a Reynolds protection pad sea surface 6, the Reynolds protection pad sea surface 6 is a flexible sea surface, and the slope ratio is 1:20.

In the utility model, as shown in figure 1, the tail end of the Reynolds protection pad sea surface 6 is provided with a vertical downward anti-washing wall 10, the depth is 3.50m, the anti-washing wall 10 is vertically connected with an irregular precast block anti-punching groove 7, the downstream slope ratio of the irregular precast block anti-punching groove 7 is 1:3, the irregular precast block anti-punching groove 7 is of a trapezoid section, the top width of the irregular precast block anti-punching groove 7 is 12.00m, the bottom width is 6.00m, and the rock stacking thickness is 2.00m.

In the utility model, as shown in figure 1, the downstream of the irregular precast block anti-punching groove 7 is smoothly connected with a river bed in a slope ratio of 1:10.

In the utility model, the drainage working conditions of the gate are divided into two working conditions of design drainage and severe drainage. The control working condition of the energy dissipation and impact prevention design is determined by comparing the energy dissipation and impact prevention calculation of the two working conditions, and a reverse filtering layer is arranged below the bottom plate of the downstream absorption basin 4 and the concrete sea surface 5, wherein the reverse filtering layer is coarse sand with the thickness of 0.20m, guami stone with the thickness of 0.20m and a crushed stone layer with the thickness of 0.20 m.

In the present utility model, the gate roof bridge 34 is arranged on the downstream side of the gate 33, and the bridge deck is 6.80m wide, designed according to the road-class II automobile load.

In the present utility model, as shown in fig. 1 and 2, the two blocking wing walls 8 are buttress retaining walls, the upper and downstream planes are diffused in circular arcs, and the top heights of the upstream wing wall 81 and the downstream wing wall 82 are 15.50m.

In the utility model, the reverse filtering layers are arranged below the bottom plates of the downstream stilling pool 4 and the concrete sea surface 5, and comprise a broken stone cushion layer, a melon and rice stone cushion layer and a coarse sand cushion layer which are arranged from top to bottom, so that suspended matters can be filtered, the smooth flow of water is promoted, and the water can directly irrigate the paddy field.

In the utility model, the wing walls 8 comprise an upstream wing wall 81 and a downstream wing wall 82, wherein the upstream wing wall 81 is arranged at two sides of an upstream impermeable pavement 2, the downstream wing wall 82 is arranged at two sides of a downstream absorption basin 4 and a concrete sea surface 5, two sides of an upstream Reynolds pad bottom 1 are respectively provided with a concrete precast block slope protection 9, and the outer sides of the Reynolds pad sea surface 6 and an irregular precast block anti-flushing groove 7 are respectively provided with a concrete precast block slope protection 9.

Specifically, the junction of the upstream wing wall 81 and the concrete precast block slope protection 9 is a straight section, the junction of the upstream wing wall 81 and the upstream Reynolds cushion bottom protection 1 and the upstream impermeable cover 2 is an arc section, the junction of the upstream wing wall 81 and the upstream impermeable cover 2 is a straight section, the upstream wing wall 81 is splayed inwards relative to the embankment 11, and the overflow condition is smooth, so that water inlet and drainage are facilitated.

Specifically, the junction of the downstream wing wall 82 and the downstream stilling pool 4 is a straight section, the junction of the downstream wing wall 82 and the concrete sea surface 5 is an arc section, the junction of the downstream wing wall 82 and the reynolds protection pad sea surface 6 is a straight section, and the downstream wing wall 82 is splayed inwards relative to the embankment 11, so that the overflow condition is further smooth, and water inlet and drainage are facilitated.

As shown in FIG. 1, the upstream wing wall 81 has an overall length of 28m, a top elevation of 15.50m, an overall height of 9.00m, a base plate width of 9.00m, and a thickness of 1.00m. The downstream wing wall 82 has an overall length of 46m, a top elevation of 15.50m, an overall height of 10.00m, a base plate width of 10.00m, and a thickness of 1.00m. The height of the earth filled behind the wall is 14.30m. In order to horizontally press the inside and outside of the wing wall 8, flat pressing holes with the diameter of 150mm and the interval of 2.0m multiplied by 2.0m are arranged on the vertical plate of the arm-rest wing wall 8, and the holes are arranged in a quincuncial shape. The calculated foundation settlement of the downstream wing wall 82 is 26.7cm and 30.8cm respectively, which meet the requirements. The bearing capacity of the foundation does not meet the requirement, and foundation treatment is needed.

According to the similar engineering experience, the foundation of the wing wall 8 is treated by adopting cement stirring piles, the diameter of each pile is initially 0.60m, the cement mixing amount is 15%, and the pile length is 8m. The stirring piles are arranged in a column shape, square pile distribution is adopted, and the pile spacing is 0.8mX0.8m (along the water flow direction X transverse flow direction). The foundation mixing pile blocks of the wing wall 8 correspond to the upper structure blocks. The bearing capacity 193kPa of the treated composite foundation is larger than the substrate stress value under each working condition, and the calculated settlement is 7.4cm, so that the requirement is met.

As shown in fig. 1, on the embankment 11, the two sides of the lock chamber 3 are provided with the bank walls 12, and the main function of the bank walls 12 is to keep the lock chamber 3 from bearing horizontal soil pressure. The most common structural types are gravity type, cantilever type, wall-supporting type, empty box type and the like. The retaining height of the engineering bank wall 12 is about 9.0m, and according to experience, the construction type adopts an empty box type retaining wall in order to reduce the base stress of the bank wall 12 and enable the base stress to be basically equivalent to the base stress of the lock chamber 3.

The length of the two side banks 12 along the flow direction is 16.00m, the length of the left bank 12 and the right bank 12 along the transverse flow direction is 12.00m, the thickness of the bottom plate is 1.00m, the thickness of the top plate is 1.00m, the thickness of the peripheral side walls is 1.00m, and the thickness of the middle partition wall is 0.50m. The retaining height of the bank wall 12 is 7.50m, the filling height of the empty box is 2m, and under the working condition of the construction, the anti-slip stability coefficient of the bank wall 12 is 1.55 and is larger than the allowable value of 1.25, so that the anti-slip stability requirement is met. The average value, the maximum value and the minimum value of the foundation stress of the bank wall 12 are respectively 90.0kPa, 103.3kPa and 76.8kPa, and the foundation settlement of the bank wall 12 is 27.4cm. The foundation stress is larger than the bearing capacity of the silt silty clay foundation by 60kPa, the settlement amount is larger than 15cm, and the foundation treatment is needed for the bank wall 12.

The foundation condition of the bank wall 12 is approximately the same as that of the lock chamber 3, so the foundation is treated by cement stirring piles, the diameter of each pile is initially 0.6m, the cement mixing amount is 15%, the stirring piles penetrate through the weak layer, and the pile length is 10m. The stirring piles are arranged in a column shape, square pile distribution is adopted, and the pile spacing is 1.0m×1.0m (along the water flow direction×transverse flow direction). The bearing capacity of the treated composite foundation is 140.2kPa, which is larger than the substrate stress value under each working condition, and the settlement is 5.2cm, so that the requirement is met.

In the utility model, as shown in fig. 1, concrete precast block revetments 9 are arranged outside wing walls 8, specifically, concrete precast block revetments 9 are arranged outside upstream wing walls 81, concrete precast block revetments 9 are arranged at two sides of water flow, concrete precast block revetments 9 are arranged outside concrete sea 5, reynolds protection pad sea 6, anti-wash walls 10 and irregular precast block anti-wash grooves 7.

While preferred embodiments of the present utility model have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. It is therefore intended that the following claims be interpreted as including the preferred embodiments and all such alterations and modifications as fall within the scope of the utility model.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present utility model without departing from the spirit or scope of the utility model. Thus, it is intended that the present utility model also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims (10)

1. A water intake and drainage device of a rice and fish system arranged on a straight channel with a single section of a paddy field in a flood storage area, comprising:

The gate body comprises an upstream Reynolds pad bottom, an upstream seepage-proofing cover, a gate chamber, a downstream absorption basin, a concrete sea surface, a Reynolds pad sea surface, a washing-proof wall and an irregular precast block anti-flushing groove which are sequentially arranged from a river to a paddy field, wherein the upstream Reynolds pad bottom and the upstream seepage-proofing cover are arranged at the joint of the river and a embankment, the gate chamber is arranged on the embankment, the downstream absorption basin, the concrete sea surface, the Reynolds pad sea surface, the washing-proof wall and the irregular precast block anti-flushing groove are arranged at the joint of the paddy field and the embankment, concrete precast block slope protection is arranged at two sides of the upstream Reynolds pad bottom, and concrete precast block slope protection is arranged at the outer sides of the Reynolds pad sea surface and the irregular precast block anti-flushing groove;

Two wing blocking walls respectively arranged at two sides of the gate body;

The bottom of the gate chamber is provided with gate foundation soil and a gate bottom plate, the gate foundation soil is divided into a silt clay layer, a silt clay layer and a sand gravel layer from top to bottom, the top elevation of the gate bottom plate is flush with the elevation of the paddy field ground, and the gate bottom plate is arranged on the silt clay layer.

2. The water intake and drainage device of a rice and fish system according to claim 1, wherein:

The structure of the lock chamber adopts an open structure, and the lock bottom plate is a flat bottom plate.

3. The water intake and drainage device of a rice and fish system according to claim 1, wherein:

The gate chamber comprises a gate bottom plate, gate piers, gates and a traffic bridge, wherein the gate piers are fixed on the gate bottom plate, the gates are rotatably arranged on the gate piers, and the traffic bridge is arranged at the tops of the gate piers.

4. A water intake and drainage apparatus of a rice fishing system according to claim 3, wherein:

The gate is a plane gate.

5. The water intake and drainage device of a rice and fish system according to claim 1, wherein:

two sides of the lock chamber is formed by connecting two holes in one joint, the middle is a hole and a link.

6. The water intake and drainage device of a rice and fish system according to claim 1, wherein:

the downstream stilling pool is connected with the gate bottom plate by a slope with a preset angle.

7. The water intake and drainage device of a rice and fish system according to claim 1, wherein:

The downstream stilling pool and the concrete sea diffusion bottom plate are respectively provided with a reverse filtering layer, and the reverse filtering layer comprises a broken stone cushion layer, a melon and rice stone cushion layer and a coarse sand cushion layer which are arranged from top to bottom.

8. The water intake and drainage device of a rice and fish system according to claim 1, wherein:

The wing walls comprise upstream wing walls and downstream wing walls, the upstream wing walls are arranged on two sides of an upstream impermeable pavement, the downstream wing walls are arranged on two sides of a downstream stilling pool and a concrete sea, concrete precast block revetments are arranged on two sides of a bottom protection of an upstream Reynolds protection pad, and concrete precast block revetments are arranged on the outer sides of a sea of the Reynolds protection pad and an irregular precast block anti-flushing groove.

9. The water intake and drainage device of a rice and fish system according to claim 8, wherein:

The upstream wing wall is a straight section at the independent connection position with the concrete precast block slope protection, an arc section at the same time of the upstream Reynolds protection pad bottom protection and the upstream impermeable pavement, a straight section at the independent connection position with the upstream impermeable pavement, and the upstream wing wall is in an inner splayed shape relative to the embankment.

10. The water intake and drainage device of a rice and fish system according to claim 8, wherein:

The downstream wing wall is a straight section at the position where the downstream wing wall is singly connected with the downstream stilling pool, an arc section at the position where the downstream wing wall is singly connected with the concrete sea surface, a straight section at the position where the downstream wing wall is singly connected with the Reynolds protection pad sea surface, and the downstream wing wall is splayed inwards relative to the embankment.