CN110685257B - Waterlogging removing and stain reducing device - Google Patents
Waterlogging removing and stain reducing device Download PDFInfo
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- CN110685257B CN110685257B CN201910983198.2A CN201910983198A CN110685257B CN 110685257 B CN110685257 B CN 110685257B CN 201910983198 A CN201910983198 A CN 201910983198A CN 110685257 B CN110685257 B CN 110685257B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B11/00—Drainage of soil, e.g. for agricultural purposes
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B11/00—Drainage of soil, e.g. for agricultural purposes
- E02B11/005—Drainage conduits
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Abstract
The invention discloses a waterlogging removing and stain reducing device, and belongs to the technical field of farmland hydraulic engineering. The device comprises: the device comprises a drainage pipeline unit, a water flow control unit and a sand unit; the water flow control unit includes: a drainage member, a drainage support member and a drainage control member; the upper end of the drainage piece is communicated with the lower end of the sandstone unit, the lower end of the drainage piece is communicated with the drainage support piece, and the drainage support piece is communicated with the drainage pipeline unit; the drainage control part is arranged in the drainage part and used for controlling surface waterlogging water to enter the drainage pipeline unit and preventing water flow in the drainage pipeline unit from entering the drainage support part; the drainage pipeline unit is laid below the ground; the upper end of the sand-stone unit is communicated with the ground. The waterlogging removing and stain reducing device provided by the embodiment of the invention has the advantages of less occupied cultivated land, low drainage cost and small construction difficulty.
Description
Technical Field
The invention relates to the technical field of farmland hydraulic engineering, in particular to a waterlogging removing and water stain reducing device.
Background
The waterlogging disaster caused by rainfall drainage is an important factor influencing the food production and the security of rural infrastructure in China. The waterlogging disaster comprises a waterlogging disaster part and a waterlogging disaster part, wherein the waterlogging disaster is a disaster which is formed because water is accumulated too much after rain and cannot be timely removed by a ground drainage system; the disaster damage refers to a disaster that the soil moisture is often in a saturated state due to too high underground water level, the physical and chemical properties of the soil layer are deteriorated, and water, heat, gas and nutrients are disordered to influence the growth of crops or endanger the survival of the crops. In general, flood disasters and waterlogging disasters exist simultaneously in most areas and are difficult to separate, so that the flood disasters and the waterlogging disasters are collectively called waterlogging disasters. In order to reduce the waterlogging disasters, a waterlogging removing and lowering device is needed to treat the waterlogging.
In the related art, a concealed pipe is laid under the ground, a large range of sand and stone materials are laid around the concealed pipe to be below a plough layer, the concealed pipe is combined with an open ditch on the ground, waterlogging is drained through the open ditch, and waterlogging is drained through the concealed pipe.
The inventors found that the related art has at least the following problems:
on one hand, the open ditches occupy too much cultivated land, and the agricultural operation production is influenced; on the other hand, laying large-range sand and stone materials in the concealed pipe needs to consume a large amount of sand and stone materials, so that the drainage cost is high, and the construction difficulty is high.
Disclosure of Invention
The embodiment of the invention provides a waterlogging removing and stain reducing device, which can solve the technical problems of too much occupied farmland, high drainage cost and high construction difficulty. The technical scheme is as follows:
provided is a waterlogging removing and waterlogging reducing device, which comprises:
the device comprises a drainage pipeline unit, a water flow control unit and a sand unit;
the water flow control unit includes: a drainage member, a drainage support member and a drainage control member;
the upper end of the drainage piece is communicated with the lower end of the sandstone unit, the lower end of the drainage piece is communicated with the drainage support piece, and the drainage support piece is communicated with the drainage pipeline unit;
the drainage control part is arranged in the drainage part and is used for controlling surface waterlogging to enter the drainage pipeline unit and preventing water flow in the drainage pipeline unit from entering the drainage support part;
the drainage pipeline unit is used for being laid below the ground;
the upper end of the sand-stone unit is communicated with the ground.
In an alternative embodiment, the drainage member comprises: geotextile, filter and base;
the geotextile is wrapped outside the filter body, the geotextile fabric is arranged inside the matrix, and the upper surface and the lower surface of the matrix are configured to allow liquid to pass through;
the upper end of base member with grit unit intercommunication, the lower extreme of base member with drainage support piece intercommunication.
In an alternative embodiment, the drain control comprises: the drainage sheet and the first limiting piece;
the drainage support comprises: the first straight pipe section, the reducing pipe section and the second straight pipe section are connected in sequence;
the diameter of the first straight pipe section is smaller than that of the second straight pipe section, the first straight pipe section is communicated with the lower end of the drainage piece, and the second straight pipe section is communicated with the upper end of the drainage pipeline unit;
the drainage piece is arranged in the reducing pipe section and forms a reference angle with the inner wall of the reducing pipe section, one end of the first limiting piece is connected with the inner wall of the reducing pipe section, and the other end of the first limiting piece is used for supporting the drainage piece.
In an optional embodiment, the drain control further comprises: and one end of the connecting piece is connected with the drainage sheet, and the other end of the connecting piece is connected with the inner wall of the reducing pipe section.
In an alternative embodiment, the apparatus further comprises: a base, an upper end of the base being connected with the drainage member, a lower end of the base being connected with the drainage support, the base being for supporting the drainage member, and the base being configured to allow passage of liquid.
In an alternative embodiment, the sand unit comprises: the inner layer sand and stone unit and the outer layer sand and stone unit;
the outer-layer sand-stone unit is paved above the inner-layer sand-stone unit sand or the outer-layer sand-stone unit is paved around the inner-layer sand-stone unit sand;
the particle size of the sand in the inner-layer sand unit is larger than that of the sand in the outer-layer sand unit;
the gap that grit formed in the inlayer grit unit with the drainage intercommunication, outer grit unit is used for extending to the earth's surface from the below ground.
In an alternative embodiment, the drain piping unit comprises: a drainage pipeline and a second limiting piece;
drainage pipe is used for laying in the below ground, the spread groove has been seted up to the drainage pipe outer wall, drainage support piece sets up in the spread groove, second locating part one end with the spread groove is connected, the other end be used for with drainage support piece offsets.
In an alternative embodiment, the particle size of the sand in the inner sand unit can be selected by the following formula:
4d15≤D15≤4d85
wherein D is15Denotes the particle diameter at which the particle content of the inner sand unit as protective layer is less than 15%, d15Denotes the particle diameter at which the outer sand unit as a protective soil has a particle content of less than 15%, d85Represents the particle diameter at which the particle content of the outer sand unit as the protective soil is less than 85%;
the particle size of the sand in the outer sand unit can be selected by the following formula:
4d15≤D15≤4d85
wherein D is15Denotes the particle diameter at which the outer sand unit as a protective layer has a particle content of less than 15%, d15Denotes the particle diameter at which the content of outer soil particles of the outer sand unit as protective soil is less than 15%, d85It represents the particle diameter of the outer sand unit as the protective soil when the content of the soil particles is less than 85%.
In an alternative embodiment, the effective pore size of the geotextile can be obtained by the following formula:
O90/d85＝4
wherein O is90Effective pore diameter for geotextiles, d85The particle size at the 85% point of the soil particle content on the distribution curve of the particle size of the soil around the drainage pipeline.
In an alternative embodiment, the length of the drainage sheet may be obtained by the following formula:
wherein l is the inclined length of the reducing pipe section, d is the length of the drainage sheet, and dbThe diameter of the second straight pipe section is phi, the included angle between the diameter-variable pipe section and the second straight pipe section is greater than 180 degrees.
The technical scheme provided by the embodiment of the invention has the beneficial effects that at least:
after the waterlogging passes through the grit unit, debris such as crop straw in the waterlogging are filtered, and after the waterlogging entered into drainage piece, the granule such as great soil in the waterlogging was filtered to prevent that drainage pipe unit from being silted up by granule such as great soil, and the waterlogging continues to flow to drainage control spare downwards, can control earth's surface waterlogging through drainage control spare and get into in drainage pipe unit to and can avoid drainage pipe unit internal water stream to advance in the drainage support piece. The waterlogging in the ground and the waterlogged water on the ground surface are finally discharged through the drainage pipeline unit. The waterlogging removing and stain reducing device provided by the embodiment of the invention has the advantages of less occupied cultivated land, low drainage cost and small construction difficulty.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic structural perspective view of a waterlogging removal and waterlogging reduction device provided by an embodiment of the invention;
fig. 2 is a schematic structural diagram of a water flow control unit of a waterlogging removal and waterlogging reduction device provided by an embodiment of the invention;
fig. 3 is an exploded schematic view of a water flow control unit of a waterlogging removal and waterlogging reduction device according to an embodiment of the present invention;
fig. 4 is an exploded schematic view of a water flow control unit of a waterlogging removal and waterlogging reduction device according to an embodiment of the present invention;
fig. 5 is an exploded schematic view of a water flow control unit of a waterlogging removal and waterlogging reduction device according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a structural arrangement of a base of a waterlogging removal and waterlogging reduction device provided by an embodiment of the invention;
FIG. 7 is a schematic diagram of a laying mode of a sand unit of the waterlogging removal and water-reducing device provided by the embodiment of the invention;
FIG. 8 is a schematic construction view of a base of a waterlogging removal and waterlogging reduction device provided by the embodiment of the invention;
FIG. 9 is a schematic view of drainage operation of a waterlogging removal and waterlogging reduction device provided by an embodiment of the invention;
FIG. 10 is a schematic view of drainage operation of a waterlogging removal and waterlogging reduction device provided by an embodiment of the invention;
fig. 11 is a schematic application diagram of a waterlogging removal and waterlogging reduction device according to an embodiment of the present invention.
The reference numerals denote:
1-drainage pipe unit, 2-water flow control unit, 3-sand unit, 4-base, 11-drainage pipe, 12-second limiting part, 21-drainage piece, 22-drainage support piece, 23-drainage control piece, 211-geotextile, 212-filter body, 213-base body, 221-first straight pipe section, 222-variable pipe section, 223-second straight pipe section, 231-drainage piece, 232-first limiting part, 233-connecting piece, 31-inner-layer sand unit and 32-outer-layer sand unit.
Detailed Description
Unless defined otherwise, all technical terms used in the examples of the present invention have the same meaning as commonly understood by one of ordinary skill in the art.
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
The embodiment of the invention provides a waterlogging removing and stain reducing device, which comprises the following components: a drainage pipeline unit 1, a water flow control unit 2 and a sand unit 3;
the water flow control unit 2 includes: drainage member 21, drainage support member 22 and drainage control member 23;
the upper end of the drainage piece 21 is communicated with the lower end of the sand unit 3, the lower end of the drainage piece 21 is communicated with the drainage support piece 22, and the drainage support piece 22 is communicated with the drainage pipeline unit 1;
the drainage control part 23 is arranged in the drainage part 21, and the drainage control part 23 is used for controlling surface waterlogging to enter the drainage pipeline unit 1 and preventing water flow in the drainage pipeline unit 1 from entering the drainage support part 22;
the drainage pipeline unit 1 is laid under the ground;
the upper end of the sand unit 3 is communicated with the ground.
The device provided by the embodiment of the invention at least has the following technical effects:
after water logging passes through grit unit 3, debris such as the crop straw of water logging are filtered, and the water logging enters into drainage piece 21 after, and granule such as great soil in the water logging is filtered to prevent that drainage pipe unit 1 is silted up by granule such as great soil, and the water logging continues to flow to drainage control piece 23 downwards, can control earth's surface water logging through drainage control piece 23 and get into in drainage pipe unit 1 to and can avoid drainage pipe unit 1 rivers to enter into drainage support piece 22. The waterlogging in the ground and the waterlogging in the ground are finally discharged through the drainage piping unit 1. The waterlogging removing and stain reducing device provided by the embodiment of the invention has the advantages of less occupied cultivated land, low drainage cost and small construction difficulty.
The apparatus provided by embodiments of the present invention will be further described below by way of alternative embodiments.
Alternatively, as shown in fig. 1, the drainage member 21 includes: geotextile 211, filter body 212 and base 213;
the geotextile 211 is wrapped outside the filter body 212, the geotextile 211 is arranged inside the matrix 213, and the upper surface and the lower surface of the matrix 213 are configured to allow liquid to pass through;
the upper end of the base 213 communicates with the sand unit 3, and the lower end of the base 213 communicates with the drainage support 22.
The geotextile 211 is completely wrapped outside the filter body 212 to prevent the drainage pipeline 11 from being clogged by impurities such as large soil particles.
As an example, the filter body 212 may be a water-permeable blind ditch with certain compressive strength and strong water permeability, wherein the water-permeable blind ditch may be a blind ditch formed at one time or a blind ditch spliced artificially, which is not limited in this embodiment of the present invention.
The upper end and the grit unit 3 intercommunication of base member 213, the lower extreme and the drainage support piece 22 intercommunication of base member 213, wherein the lower extreme of base member 213 and drainage support piece 22's connected mode can be for dismantling the connection, and the change is in time dismantled when being convenient for base member 213 or drainage support piece 22 break down.
As an example, the shape of the substrate 213 may be rectangular, circular, or the like, which is not limited in this embodiment of the present invention. The base 213 may be made of alloy and has a certain compressive strength to support the sand unit 3.
The number of filter bodies 212 arranged inside the base body 213 is such that the inside of the base body 213 is just filled and serves as a communication for the sand unit 3. Wherein the upper and lower surfaces of the substrate 213 may allow stagnant water to flow through the filter body 212.
Alternatively, as shown in fig. 2, the drainage control member 23 includes: a drainage sheet 231 and a first limiting member 232;
the diameter of the first straight pipe section 221 is smaller than that of the second straight pipe section 223, the first straight pipe section 221 is communicated with the lower end of the drainage piece 21, and the second straight pipe section 223 is communicated with the upper end of the drainage pipeline unit 1;
the drainage piece 231 is disposed in the variable diameter pipe section 222 and forms a reference angle with the inner wall of the variable diameter pipe section 222, one end of the first limiting member 232 is connected with the inner wall of the variable diameter pipe section 222, and the other end is used for supporting the drainage piece 231.
As an example, the first straight pipe section 221, the variable diameter pipe section 222 and the second straight pipe section 223 may be detachably connected, for example, mating threads may be respectively disposed on the surfaces of the first straight pipe section 221, the variable diameter pipe section 222 and the second straight pipe section 223 for connection. Wherein, as shown in fig. 3, the first straight pipe section 221 can also be connected with the base 4 to support the gravity of the base 4. As shown in FIG. 4, the second straight tube section 223 may also be connected to the drain pipe 11 to ensure that water can flow into the drain pipe 11 to complete the draining operation.
As an example, the lengths of the first straight pipe section 221, the variable diameter pipe section 222 and the second straight pipe section 223 may be 1-5cm (unit: cm). As an example, the first straight pipe section 221, the variable diameter pipe section 222 and the second straight pipe section 223 may each have a length of 1cm, 2cm, 3.5cm, 4.8cm, 5cm, or the like.
As an example, the diameters of the first straight pipe section 221, the variable diameter pipe section 222 and the second straight pipe section 223 may be 1.5-2 times the diameter of the first straight pipe section 221, so as to ensure that the drainage control member 23 disposed in the variable diameter pipe section 222 can work normally, and ensure that the variable diameter pipe section 222 and the second straight pipe section 223 with larger diameters have a certain supporting function on the sand unit 3 and the drainage member 21, thereby ensuring the stability of the device. For example, the diameter of the variable diameter pipe section 222 and the second straight pipe section 223 may be 1.5 times, 1.6 times, 1.8 times, 2 times, or the like of the diameter of the first straight pipe section 221. Specifically, the diameters of the variable diameter pipe section 222 and the second straight pipe section 223 can be selected according to the market pipe specification, for example, the diameters of the variable diameter pipe section 222 and the second straight pipe section 223 can be 10-30cm, and for example, the diameters of the variable diameter pipe section 222 and the second straight pipe section 223 can be 10cm, 15cm, 16cm, 20cm, 24cm or 30cm, and the like.
The drainage piece 231 is at a reference angle with the inner wall of the variable diameter pipe section 222, and as an example, the reference angle of the drainage piece 231 with the inner wall of the variable diameter pipe section 222 may be set to 30-60 degrees. For example, the reference angle of the flow-inducing piece 231 to the inner wall of the variable diameter pipe section 222 may be set to 30 degrees, 35 degrees, 42 degrees, 50 degrees, 56 degrees, 60 degrees, or the like.
As an example, the first limiting member 232 and the drainage sheet 231 may be connected by a hinge. The periphery of the drainage sheet 231 is required to be kept in a sealed and watertight state. For example, a rubber sheet may be attached around the drainage sheet 231 to prevent the waterlogging from passing through the drainage sheet 231 when the flow of the waterlogging is large.
As an example, the shape of the drainage sheet 231 may be a circle, an ellipse, or the like, and the shape of the drainage sheet 231 is not limited thereto in the embodiment of the present invention.
As an example, the diameter of the diversion piece 231 is slightly larger than that of the first straight pipe section 221 to ensure that the diversion piece 231 can work properly in the variable diameter pipe section 222.
As an example, the first limiting member 232 may be a supporting plate having a certain compressive strength to support the drainage sheet 231.
One end of the first limiting member 232 is connected to the inner wall of the reducing pipe section 222, and may be fixedly connected or detachably connected, so as to ensure the connection stability between the first limiting member 232 and the reducing pipe section 222.
The other end of the first limiting member 232 is used for supporting the drainage sheet 231, and the length of the first limiting member 232 is determined according to the size of the drainage sheet 231, so that the drainage sheet 231 and the first limiting member 232 can work normally.
Optionally, as shown in fig. 5, the drainage control member 23 further includes: and one end of the connecting piece 233 is connected with the drainage sheet 231, and the other end of the connecting piece 233 is connected with the inner wall of the reducing pipe section 222.
As an example, one end of the connection member 233 is flexibly connected to the drainage piece 231, and the other end is connected to the inner wall of the variable diameter pipe section 222. The flexible connection is also called as elastic connection, and refers to a connection mode which allows displacement or rotation of interconnected components and does not limit deformation of one aspect of the components, and can play a role in shock absorption. The flexible connection means may include: hinged or connections containing spring isolation, etc.
As an example, the connection member 233 may be a hinge so that the drainage piece 231 can normally operate. The connecting member 233 may be made of a material having a certain compressive strength and corrosion resistance. For example, the connecting member 233 may be made of an alloy material to ensure the connection stability between the diversion piece 231 and the inner wall of the reducer pipe section 222.
Optionally, as shown in fig. 6, the apparatus further includes: base 4, the upper end of base 4 is connected with drainage 21, the lower end of base 4 is connected with drainage support 22, base 4 is used for supporting drainage 21, and base 4 is configured to allow liquid to pass through.
The base 4 may be made of a substrate having a certain compressive strength and a certain corrosion resistance. As an example, the material of the base 4 may be an alloy material to support the flow guide 21. The material of the base 4 may be polyvinyl chloride or the like.
The shape of the base 4 can be determined according to the requirements of actual waterlogging removal and waterlogging reduction operation conditions. As an example, the shape of the base 4 may be rectangular, circular or other shape, and the periphery of the base 4 is in a watertight sealing state.
As an example, the height of the base 4 may be 5cm-15cm, etc., for example, the height of the base 4 may be 5cm, 6cm, 7cm, 8cm, 9cm, 10cm, 11cm, 12m, 13cm, 14cm, 15cm, etc.
The length and width of the base 4 are determined according to the water flow rate of the drain pipe 11 for removing stagnant water, the ease of construction operation, and the fact that the cost of sand and stone is consumed. As an example, the length and width of the base 4 may be set to 50cm to 200cm to ensure efficient collection and drainage of stagnant water and to reduce the cost of grit material consumption. For example, the length of the base 4 may be set to 50cm, the width of the base 4 may be set to 100cm or the length of the base 4 may be set to 100cm, the width of the base 4 may be set to 200cm, or the like.
Optionally, sand unit 3 comprises: an inner sand unit 31 and an outer sand unit 32;
the outer-layer sand unit 32 is paved above the inner-layer sand unit 31 or the outer-layer sand unit 32 is paved around the inner-layer sand unit 31;
the particle size of the sand in the inner sand unit 31 is larger than that of the sand in the outer sand unit 32;
the gap formed by the sand in the inner sand unit 31 communicates with the drain 21 and the outer sand unit 32 is adapted to extend from below the surface to the surface.
Wherein the length and width of the sand unit 3 are respectively matched with the length and width of the base 4.
The inner sand unit 31 and the outer sand unit 32 can be vertically paved on the ground surface by adopting a layered filling mode. Outer sand unit 32 may be placed around inner sand unit 31, for example, outer sand unit 32 may be placed in a ring around inner sand unit 31.
As an example, as shown in fig. 7, the outer sand unit 32 may also be laid over the inner sand unit 31.
When waterlogging water enters the sand unit 3, the outer-layer sand unit 32 consisting of smaller sand grains can intercept sundries such as crop straws and the like on the ground surface, and does not influence the mechanical farming process of agricultural personnel. The inner sand unit 31 composed of larger sand grain size can be used to communicate with the drainage member 21, and the inner sand unit 31 can reduce larger soil particles from entering the inside of the drainage member 21 to prevent the drainage member 21 from being clogged by the larger soil particles.
Alternatively, as shown in fig. 8, the drain line unit 1 includes: a drainage pipeline 11 and a second limiting piece 12;
The drain pipeline 11 is laid in a horizontal direction below the ground, wherein the diameter of the first straight pipe section 221 may be larger than the diameter of the drain pipeline 11. As an example, the diameter of the first straight pipe section 221 may be set to 1.5-2 times the diameter of the drain pipe 11 to control the amount of waterlogging entering the drain control 23. For example, the diameter of the first straight pipe section 221 may be set to be 1.5 times, 1.6 times, 1.7 times, 2 times, or the like of the diameter of the drain pipe 11. The diameter of the first straight pipe section 221 can be selected according to the market pipe specification, for example, the diameter of the first straight pipe section 221 can be set to be 11cm or 15cm, etc.
As an example, the drainage pipeline 11 may be made of a corrugated plastic pipe with holes perforated horizontally to ensure that the drainage pipeline 11 has the function of draining waterlogging of the conventional drainage pipeline 11 and also to drain waterlogging entering the drainage pipeline 11 vertically. The second limiting member 12 may be a one-way clip, through which the drainage pipe 11 is connected to the drainage support member 22 by interaction with the corrugated housing of the horizontally perforated corrugated plastic pipe.
As an example, the outer wall of the drainage pipeline 11 is opened with a connecting groove, the drainage support 22 is disposed in the connecting groove, and the size of the drainage support 22 is matched with the size of the connecting groove.
The other end of the second limiting part 12 abuts against the drainage supporting part 22, and the abutting mode can be detachable and connected, so that the operating personnel can detach and replace the second limiting part 12 or the drainage supporting part 22 in time.
Alternatively, the particle size of the sand in the inner sand unit 31 may be selected by the following formula:
4d15≤D15≤4d85
wherein D is15Denotes the particle diameter at which the particle content of the inner sand unit 31 as a protective layer is less than 15%, d15Denotes the particle diameter at which the particle content of the outer sand units 32 as protective soil is less than 15%, d85Represents the particle diameter at which the particle content of the outer sand unit 32 as the protective soil is less than 85%;
the particle size of the sand in the outer sand unit 32 can be selected by the following formula:
4d15≤D15≤4d85
wherein D is15Denotes the particle diameter at which the particle content of the outer sand unit 32 as a protective layer is less than 15%, d15Denotes the particle diameter, d, of the outer sand unit 32 as the protective soil with a particle content of the outer soil of less than 15%85It represents the particle diameter of the outer soil having a particle content of less than 85% in the outer sand unit 32 as the protective soil.
The distribution of the content of soil particles with different thickness grades in the soil can be represented by a soil particle size distribution curve. Wherein, on the distribution curve of the soil particle size, the abscissa is the diameter of the soil particles, and the ordinate is the cumulative percentage content of the soil particles. The particle size of the sand in the inner sand unit 31 and the outer sand unit 32 can be selected by combining the soil particle size distribution curve and the corresponding relationship of the two formulas.
It will be appreciated that the outer sand unit 32, which is made up of smaller sand sizes, can be used to extend from below the ground to the surface, and that when waterlogging water enters the sand unit 3, the outer sand unit 32 can trap straw and other debris on the surface without affecting the mechanical farming process for the agricultural personnel. Inner sand unit 31, which is composed of larger sand grain size, can be used to communicate with drainage member 21, and inner sand unit 31 can reduce soil particles from entering into drainage member 21, which results in drainage member 21 being clogged by soil particles.
Alternatively, the effective pore size of the geotextile 211 can be obtained by the following formula:
O90/d85＝4
wherein O is90Effective pore size of geotextile 211, d85The soil particle content around the drain pipeline 11 passes the particle size at the 85% point.
The selection of the geotextile 211 can be set according to the soil structure and texture and with reference to the selection method of the filter material outside the drainage pipeline 11. For the soil structure with the silting tendency, the geotextile 211 can be initially selected according to the following formula and then determined through field practical application, so that the pore diameter of the geotextile 211 is prevented from being blocked by soil particles to influence the drainage effect of the device.
O90/d85＝4
Wherein, O90Effective pore size of geotextile 211, d85The particle size at the point where the content of soil particles on the particle size distribution curve of the soil around the drainpipe 11 passes through 85% is shown.
Alternatively, the length of the drainage piece 231 may be obtained by the following formula:
wherein l is the variable diameter pipe section 222The length of the incline, d is the length of the drainage piece 231, dbIs the diameter of the second straight pipe section 223, phi is the included angle between the variable diameter pipe section 222 and the second straight pipe section 223, and the included angle is larger than 180 degrees.
The drainage sheet 231 can drain the waterlogging downwards to enter the drainage pipeline 11, and can also avoid waterlogging in the drainage pipeline 11 from entering the drainage support member 22 from bottom to top, so that the waterlogging removing and waterlogging reducing capacity of the device is improved.
As an example, as shown in fig. 9, when the water flow direction is mainly vertical, that is, when the waterlogged water flow is large and the waterlogged water flow is small, the waterlogged water hits the drainage sheet 231, the drainage sheet 231 is opened, and then the waterlogged water can enter the drain duct 11 without obstructing the flow of the waterlogged water in the drain duct 11. As shown in fig. 10, when the water flow direction is mainly horizontal, that is, when the waterlogged water flow is small and the waterlogged water flow is large, the waterlogged water impacts the drainage sheet 231, and the drainage sheet 231 is closed, so that the waterlogged water is prevented from entering the drainage support 22 from bottom to top due to the overhigh water pressure inside the drainage pipeline 11.
It should be particularly noted that the device application scenario provided by the embodiment of the present invention may be in a cultivated land soil layer. As shown in FIG. 11, in the arable soil layer, a device provided by the embodiment of the invention with the length of 100cm and the width of 50cm can be arranged at the position of every 50m in the horizontal direction. As an example, 4 such devices may be provided, whereby the drainage of the drainage pipe unit 1 can be increased by about 1 time.
The device provided by the embodiment of the invention is smaller, occupies less cultivated land, ensures the number of cultivated lands, and has low drainage cost and small construction difficulty.
All the above-mentioned optional technical solutions can be combined arbitrarily to form the optional embodiments of the present invention, and are not described herein again.
The above description is only an illustrative embodiment of the present invention, and should not be taken as limiting the scope of the invention, and any modifications, equivalents, improvements and the like that are within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (8)
1. A waterlogging removing and stain reducing device is characterized by comprising: the device comprises a drainage pipeline unit (1), a water flow control unit (2) and a sand unit (3);
the water flow control unit (2) comprises: a drainage member (21), a drainage support member (22) and a drainage control member (23);
the upper end of the drainage piece (21) is communicated with the lower end of the sand unit (3), the lower end of the drainage piece (21) is communicated with the drainage support piece (22), and the drainage support piece (22) is communicated with the drainage pipeline unit (1);
the drainage member (21) comprises: a geotextile (211), a filter body (212) and a base body (213);
the geotextile (211) is wrapped outside the filter body (212), the geotextile (211) is arranged inside the matrix (213), and the upper surface and the lower surface of the matrix (213) are configured to allow liquid to pass through;
the upper end of the base body (213) is communicated with the sand unit (3), and the lower end of the base body (213) is communicated with the drainage support (22);
the drainage control part (23) is arranged in the drainage part (21), the drainage control part (23) is used for controlling surface waterlogging water to enter the drainage pipeline unit (1) and preventing water in the drainage pipeline unit (1) from entering the drainage support part (22);
the drainage control (23) comprises: a drainage sheet (231) and a first limiting member (232);
the drainage support (22) comprises: a first straight pipe section (221), a variable diameter pipe section (222) and a second straight pipe section (223) which are connected in sequence;
the diameter of the first straight pipe section (221) is smaller than that of the second straight pipe section (223), the first straight pipe section (221) is communicated with the lower end of the drainage piece (21), and the second straight pipe section (223) is communicated with the upper end of the drainage pipeline unit (1);
the drainage piece (231) is arranged in the reducing pipe section (222) and forms a reference angle with the inner wall of the reducing pipe section (222), one end of the first limiting piece (232) is connected with the inner wall of the reducing pipe section (222), and the other end of the first limiting piece is used for supporting the drainage piece (231);
the drainage pipeline unit (1) is paved below the ground;
the upper end of the sand-stone unit (3) is communicated with the ground.
2. The device according to claim 1, wherein the drainage control (23) further comprises: and one end of the connecting piece (233) is connected with the drainage sheet (231), and the other end of the connecting piece (233) is connected with the inner wall of the reducing pipe section (222).
3. The apparatus of claim 1, further comprising: a base (4), the upper end of the base (4) being connected with the drain (21), the lower end of the base (4) being connected with the drain support (22), the base (4) being for supporting the drain (21), and the base (4) being configured to allow liquid to pass through.
4. The device according to claim 1, characterized in that the sand unit (3) comprises: an inner layer sand unit (31) and an outer layer sand unit (32);
the outer-layer sand unit (32) is paved above the inner-layer sand unit (31) or the outer-layer sand unit (32) is paved around the inner-layer sand unit (31);
the particle size of the sand in the inner sand unit (31) is larger than that of the sand in the outer sand unit (32);
the gap formed by the sand in the inner sand unit (31) is communicated with the drainage piece (21), and the outer sand unit (32) is used for extending from the ground surface to the ground surface.
5. Device according to claim 1, characterized in that the drainline unit (1) comprises: a drainage pipeline (11) and a second limiting piece (12);
drainage pipe (11) are used for laying below ground, the spread groove has been seted up to drainage pipe (11) outer wall, drainage support piece (22) set up in the spread groove, second locating part (12) one end with the spread groove is connected, the other end be used for with drainage support piece (22) offset.
6. An apparatus according to claim 4, wherein the particle size of sand in the inner sand unit (31) is selected by the formula:
4d15≤D15≤4d85
wherein D is15Denotes the particle diameter at which the particle content of the inner sand unit (31) as a protective layer is less than 15%, d15Denotes the particle diameter at which the particle content of the outer sand units (32) as protective soil is less than 15%, d85Represents the particle diameter of the outer sand unit (32) as the protective soil with the particle content less than 85%;
the particle size of the sand in the outer sand unit (32) can be selected by the following formula:
4d15≤D15≤4d85
wherein D is15Denotes the particle diameter at which the particle content of the outer sand unit (32) as a protective layer is less than 15%, d15Denotes the particle diameter at which the outer soil particle content of the outer sand unit (32) as protective soil is less than 15%, d85It represents the particle diameter of the outer sand unit (32) as the protective soil when the content of the soil particles outside is less than 85%.
7. The apparatus according to claim 1, wherein the effective pore size of the geotextile (211) is obtainable by the following formula:
O90/d85＝4
wherein O is90Is the effective pore size of the geotextile (211), d85The particle size at the point where the content of soil particles on the particle size distribution curve of the soil around the drainage pipeline (11) passes through 85% is shown.
8. The device according to claim 1, wherein the length of the drainage sheet (231) is obtained by the following formula:
wherein l is the inclined length of the reducing pipe section (222), d is the length of the flow guide sheet (231), and dbIs the diameter of the second straight pipe section (223), phi is the included angle between the reducing pipe section (222) and the second straight pipe section (223), and the included angle is larger than 180 degrees.
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| CN201910983198.2A CN110685257B (en) | 2019-10-16 | 2019-10-16 | Waterlogging removing and stain reducing device |
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| CN110685257B true CN110685257B (en) | 2020-09-15 |
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| CN101003971A (en) * | 2007-01-25 | 2007-07-25 | 江苏省水利科学研究所 | Underground drainage installation in farmland |
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