Drainage embankment

Abstract

The invention discloses a drainage embankment, and belongs to the technical field of drainage embankments, the drainage embankment comprises an embankment main body, geotechnical cloth and a drainage pipe, the embankment main body is made of a soil body material, the geotechnical cloth is at least partially laid in the embankment main body, the geotechnical cloth comprises a first film layer, a water absorption and drainage layer and a second film layer which are stacked, the water pipe penetrates through the embankment main body, and the water absorption and drainage layer is communicated with the water drainage pipe. According to the drainage embankment provided by the embodiment of the invention, under the condition of high water pressure, the water permeability of the first film layer and the second film layer is reduced to limit rapid permeation of rainwater into the embankment main body, and under the condition of low water pressure, the water permeability of the first film layer and the second film layer is increased to limit rapid permeation of rainwater into the embankment main body. Capillary water adsorbed by a soil body in the embankment main body can penetrate through the first film layer and the second film layer to enter the water absorption and drainage layer, the water absorption and drainage layer can drain water in the embankment main body out of the embankment main body through the drainage pipe, the stability of the drainage embankment is improved, and the service life of the drainage embankment is prolonged.

Description

Technical Field

[0001] The present invention relates to the field of drainage embankments, and more particularly, to a drainage embankment. Background Art

[0002] In the related art, a geotextile is usually provided in the soil body of the embankment structure. The geotextile can enhance the stability of the soil body of the embankment structure and also has a certain drainage capacity. However, the drainage capacity of the geotextile is limited, and it is difficult to drain the rainwater in the soil body in time when the rainfall is large. At the same time, the geotextile is also difficult to drain the capillary water in the soil body in time, resulting in uneven soil moisture and affecting the stability of the roadbed. Summary of the Invention

[0003] The present invention aims to solve at least one of the above technical problems in the prior art to some extent. To this end, the present invention provides a drainage embankment that can reduce the water content of the embankment body.

[0004] The drainage embankment according to an embodiment of the present invention includes: an embankment body made of soil material; a geotextile at least partially laid inside the embankment body, the geotextile including a first film layer, a water absorption and drainage layer, and a second film layer arranged in a stacked manner, and the water permeability of the first film layer and the second film layer is negatively correlated with the water pressure; a drain pipe passing through the embankment body, and the water absorption and drainage layer is communicated with the drain pipe.

[0005] In the drainage embankment according to an embodiment of the present invention, the geotextile includes a first film layer, a water absorption and drainage layer, and a second film layer arranged in a stacked manner, and the water permeability of the first film layer and the second film layer is negatively correlated with the water pressure. Under high water pressure conditions, the water permeability of the first film layer and the second film layer decreases to effectively limit the rapid penetration of rainwater into the embankment body. Under low water pressure conditions, the water permeability of the first film layer and the second film layer increases, so that the capillary water adsorbed by the soil in the embankment body can penetrate through the first film layer and the second film layer into the water absorption and drainage layer, and the water absorption and drainage layer can discharge the water in the embankment body through the drain pipe. The geotextile and the drain pipe can reduce the water content of the embankment body, thereby being beneficial to improving the stability and service life of the drainage embankment.

[0006] According to some embodiments of the present invention, the water absorption and drainage layer includes: a plurality of water absorption and drainage lines, and the ends of the water absorption and drainage lines penetrate through the drain pipe; the water absorption and drainage lines are composed of a plurality of core absorption fibers wound around, and at least one water guide groove extending along the length direction is provided on the outer surface of the core absorption fibers.

[0007] According to some embodiments of the present invention, the water absorption and drainage layer further includes: a plurality of strengthening lines, and the plurality of water absorption and drainage lines and the plurality of strengthening lines are woven together into a net structure.

[0008] According to some embodiments of the present invention, the water absorption and drainage layer further includes: a plurality of water storage particles, and the plurality of water storage particles are uniformly distributed and fixed to the mesh structure.

[0009] According to some embodiments of the present invention, in the direction of gravity, the height of the drain pipe is at least partially lower than the height of the geotextile.

[0010] According to some embodiments of the present invention, on both sides of the geotextile in the width direction of the embankment main body, the drain pipes are provided, and both ends of the water absorption and drainage layer are respectively communicated with the drain pipes corresponding to both sides of the geotextile.

[0011] According to some embodiments of the present invention, the drain pipe includes: an inner pipe, a drainage channel is formed in the inner pipe; an outer pipe, the outer pipe is sleeved outside the inner pipe; an elastic support member, the elastic support member is connected between the inner pipe and the outer pipe; wherein, the water absorption and drainage layer penetrates through the outer pipe and the inner pipe and is communicated with the drainage channel.

[0012] According to some embodiments of the present invention, the outer pipe is configured as a corrugated pipe.

[0013] According to some embodiments of the present invention, the geotextile has the same shape as the outer surface of the embankment main body, and the distance between the geotextile and the outer surface of the embankment main body is equal everywhere.

[0014] According to some embodiments of the present invention, the distance between the geotextile and the outer surface of the embankment main body is D, which satisfies the relational expression 15 cm ≤ D ≤ 100 cm.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, become apparent in part from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a schematic structural diagram of a drainage embankment according to an embodiment of the present invention;

[0017] Figure 2 is a schematic cross-sectional view of a geotextile according to an embodiment of the present invention;

[0018] Figure 3 is a schematic diagram of a first film layer according to an embodiment of the present invention;

[0019] Figure 4 is a schematic cross-sectional view of a water absorption and drainage layer according to an embodiment of the present invention;

[0020] Figure 5 is Figure 4 an enlarged view at A;

[0021] Figure 6Schematic diagram of the water absorption and drainage line and the strengthening line according to an embodiment of the present invention;

[0022] Figure 7 Schematic diagram of the water absorption and drainage layer according to an embodiment of the present invention;

[0023] Figure 8 Schematic cross-sectional view of the drain pipe according to an embodiment of the present invention;

[0024] Reference numerals:

[0025] Embankment main body 1; upper part of the embankment 11; lower part of the embankment 12;

[0026] Geotextile 2; first film layer 21; water absorption and drainage layer 22; water absorption and drainage line 221; wicking fiber 2211; water guide groove 22111; strengthening line 222; first strengthening line 222a; second strengthening line 222b; water storage particles 223; second film layer 23;

[0027] Drain pipe 3; inner pipe 31; drainage channel 311; outer pipe 32; elastic support 33; metal bracket 331;

[0028] Drainage ditch 4;

[0029] Impervious layer 5;

[0030] Drainage embankment 10. Detailed implementation manners

[0031] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0032] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "bottom", "inner", "outer", etc. are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

[0033] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0034] In the present invention, unless otherwise clearly specified and defined, terms such as "installation", "connection", "linkage", "fixation" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral body; it may be a mechanical connection, an electrical connection or a communication connection; it may be a direct connection, or an indirect connection through an intermediate medium, and it may be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] The drainage embankment 10 according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0036] Refer to Figures 1-3 As shown, the drainage embankment 10 according to an embodiment of the present invention includes: an embankment main body 1, a geotextile 2 and a drain pipe 3. The embankment main body 1 is made of soil material. The geotextile 2 is at least partially laid inside the embankment main body 1. The geotextile 2 includes a first film layer 21, a water absorption and drainage layer 22 and a second film layer 23 which are stacked. The water permeability of the first film layer 21 and the second film layer 23 is negatively correlated with the water pressure. The drain pipe 3 penetrates through the embankment main body 1, and the water absorption and drainage layer 22 is communicated with the drain pipe 3.

[0037] Among them, the embankment main body 1 is made of soil material, and the water content of the embankment main body 1 is one of the main factors affecting the quality of the drainage embankment 10. The geotextile 2 is at least partially laid inside the embankment main body 1. In the direction of gravity, that is, Figure 1 in the up and down direction shown in the figure, the geotextile 2 divides the embankment main body 1 into an upper embankment part 11 and a lower embankment part 12. The geotextile 2 can absorb the capillary water in the embankment main body 1 on both its upper and lower sides. At the same time, the geotextile 2 can also limit the penetration of rainwater from the upper embankment part 11 to the lower embankment part 12, thereby reducing the water content of the embankment main body 1.

[0038] Specifically, in the up and down direction, the geotextile 2 includes a first film layer 21, a water absorption and drainage layer 22 and a second film layer 23 which are sequentially stacked. The structures of the first film layer 21 and the second film layer 23 may be the same. The water absorption and drainage layer 22 is sandwiched between the first film layer 21 and the second film layer 23. The water permeability of the first film layer 21 and the second film layer 23 will change dynamically with the water pressure, and the water permeability of the first film layer 21 and the second film layer 23 is negatively correlated with the water pressure. Among them, the first film layer 21 and the second film layer 23 may be film layer structures such as pressure-responsive membranes and non-linear permeable membranes. The first film layer 21 and the second film layer 23 may be silicone materials to ensure the durability of the first film layer 21 and the second film layer 23.

[0039] It can be understood that the water permeability of the first membrane layer 21 is negatively correlated with the water pressure. Under heavy rain conditions, as the upper part 11 of the embankment is infiltrated by rainwater, the water pressure borne by the first membrane layer 21 gradually increases, and the water permeability of the first membrane layer 21 gradually decreases. That is to say, under high water pressure conditions, the water permeability of the first membrane layer 21 is low, and most of the rainwater in the rainfall cannot continue to penetrate downward through the first membrane layer 21. The first membrane layer 21 can improve the hydrophobic effect of the geotextile 2. At the same time, the water absorption capacity of the upper part 11 of the embankment is limited. When the water content of the upper part 11 of the embankment is saturated, most of the rainwater in the rainfall will flow away along the outer surface of the upper part 11 of the embankment to effectively limit the rapid penetration of rainwater into the main body 1 of the embankment during heavy rain and improve the drainage effect of the drainage embankment 10.

[0040] When the rainwater enters the water absorption and drainage layer 22 through the first membrane layer 21, the water absorption and drainage layer 22 can introduce the rainwater between the first membrane layer 21 and the second membrane layer 23 into the drain pipe 3 and discharge it from the main body 1 of the embankment through the drain pipe 3.

[0041] At the same time, the water permeability of the second membrane layer 23 is also negatively correlated with the water pressure. That is to say, the higher the water pressure borne by the second membrane layer 23, the lower the water permeability of the second membrane layer 23. When the rainfall time is long and the rainwater passing through the first membrane layer 21 is more, it will cause the water pressure between the first membrane layer 21 and the second membrane layer 23 to increase. At this time, the water permeability of the second membrane layer 23 is low to limit the rainwater in the water absorption and drainage layer 22 from passing through the second membrane layer 23 and entering the lower part 12 of the embankment, thereby reducing the water content of the main body 1 of the embankment.

[0042] Under light rain or no-rain conditions, the water content in the upper part 11 and the lower part 12 of the embankment is small, the external water pressure borne by the first membrane layer 21 and the second membrane layer 23 will decrease, the water permeability of the first membrane layer 21 and the second membrane layer 23 will increase, the capillary water in the upper part 11 of the embankment can easily penetrate through the first membrane layer 21 and enter the water absorption and drainage layer 22, and the capillary water in the lower part 12 of the embankment can easily penetrate through the second membrane layer 23 and enter the water absorption and drainage layer 22. The capillary water entering the water absorption and drainage layer 22 can be discharged from the main body 1 of the embankment through the drain pipe 3, thereby reducing the water content of the main body 1 of the embankment and reducing the risk of capillary water accumulation in the main body 1 of the embankment.

[0043] The drain pipe 3 of the drainage embankment 10 penetrates through the main body 1 of the embankment, and a drain outlet can be provided outside the main body 1 of the embankment for the drain pipe 3. The water absorption and drainage layer 22 is communicated with the drain pipe 3, and the rainwater and capillary water adsorbed by the water absorption and drainage layer 22 can be discharged from the main body 1 of the embankment through the drain pipe 3 to ensure the drainage capacity of the water absorption and drainage layer 22, so that the rainwater and capillary water in the main body 1 of the embankment can continuously discharge to the outside of the main body 1 of the embankment through the geotextile 2 and the drain pipe 3 in sequence to reduce the water content of the main body 1 of the embankment.

[0044] According to the drainage embankment 10 of the embodiment of the present invention, the geotextile 2 includes a first film layer 21, a water absorption and drainage layer 22, and a second film layer 23 which are stacked. The water permeability of the first film layer 21 and the second film layer 23 is negatively correlated with the water pressure. Under high water pressure conditions, the water permeability of the first film layer 21 and the second film layer 23 decreases to effectively limit the rapid penetration of rainwater into the embankment main body 1. Under low water pressure conditions, the water permeability of the first film layer 21 and the second film layer 23 increases, so that the capillary water adsorbed by the soil in the embankment main body 1 can penetrate through the first film layer 21 and the second film layer 23 into the water absorption and drainage layer 22. The water absorption and drainage layer 22 can discharge the water in the embankment main body 1 through the drain pipe 3. The geotextile 2 and the drain pipe 3 can reduce the water content of the embankment main body 1, thereby being beneficial to improving the stability and service life of the drainage embankment 10.

[0045] In some embodiments of the present invention, referring to Figure 4 and Figure 5 As shown, the water absorption and drainage layer 22 includes: a plurality of water absorption and drainage lines 221. The ends of the water absorption and drainage lines 221 penetrate through the drain pipe 3. The water absorption and drainage lines 221 are composed of a plurality of core absorption fibers 2211 wound around, and at least one water guide groove 22111 extending along the length direction is formed on the outer surface of the core absorption fiber 2211.

[0046] Among them, the water absorption and drainage line 221 includes a plurality of core absorption fibers 2211. The core absorption fibers 2211 can have a certain water absorption capacity. The plurality of core absorption fibers 2211 are wound to form a water absorption and drainage line 221 with a stranded wire structure to improve the strength and water absorption capacity of the water absorption and drainage line 221. At the same time, at least one water guide groove 22111 extending along the length direction is formed on the outer surface of the core absorption fiber 2211. The water guide groove 22111 can absorb the moisture in the water absorption and drainage layer 22 through capillary action. The ends of the water absorption and drainage lines 221 penetrate through the drain pipe 3, so that the moisture in the water absorption and drainage layer 22 flows into the drain pipe 3 through the water guide groove 22111.

[0047] Referring to Figure 5 As shown, a plurality of water guide grooves 22111 extending along the length direction are formed on the outer surface of the core absorption fiber 2211. The plurality of water guide grooves 22111 can be distributed along the circumferential direction of the corresponding core absorption fiber 2211. That is to say, the flow direction of the moisture in the water absorption and drainage layer 22 can be the length direction of the core absorption fiber 2211. The moisture in the water absorption and drainage layer 22 flows in the water guide groove 22111. The ends of the water absorption and drainage lines 221 can penetrate through the drain pipe 3 along the radial direction of the drain pipe 3 to ensure that the moisture in the water guide groove 22111 quickly flows into the drain pipe 3 and the moisture is discharged in time through the drain pipe 3 to prevent the moisture from staying in the geotextile 2. At the same time, the plurality of water guide grooves 22111 can optimize the water absorption and drainage paths of the water absorption and drainage layer 22 to ensure the continuity and uniformity of the moisture flow.

[0048] Optionally, the wicking fiber 2211 can be a deep-groove nylon wicking fiber, and the nylon material has advantages such as a smooth surface, corrosion resistance, and good toughness.

[0049] In the above embodiment, the end of the water absorption and drainage line 221 can pass through the drainage pipe 3. The water absorption and drainage line 221 is composed of multiple wicking fibers 2211 wound together, and at least one or more water guide grooves 22111 extending along the length direction are provided on the outer surface of the wicking fiber 2211. The water absorption and drainage line 221 has high strength and strong water absorption and drainage, so as to improve the drainage efficiency of the geotextile 2.

[0050] In some embodiments of the present invention, referring to Figure 4 、 Figure 6 and Figure 7 shown, the water absorption and drainage layer 22 further includes: a plurality of strengthening lines 222, and the plurality of water absorption and drainage lines 221 and the plurality of strengthening lines 222 are woven together into a net structure.

[0051] Among them, the material of the strengthening line 222 can be polyester fiber, and the polyester fiber has advantages such as wear resistance and stability. The plurality of water absorption and drainage lines 221 and the plurality of strengthening lines 222 are woven together into a net structure.

[0052] Specifically, referring to Figure 6 shown, the strengthening line 222 can be a first strengthening line 222a or a second strengthening line 222b. The plurality of water absorption and drainage lines 221 and the plurality of first strengthening lines 222a can be alternately arranged at intervals in the front-rear direction, and each water absorption and drainage line 221 and each first strengthening line 222a can extend in the left-right direction and be parallel to each other. The plurality of second strengthening lines 222b can be arranged at intervals in the left-right direction, and each second strengthening line 222b can extend in the front-rear direction and be parallel to each other. The plurality of second strengthening lines 222b can pass through the first strengthening line 222a and the water absorption and drainage line 221 in a one-over-one-under manner in sequence, so as to realize that the plurality of water absorption and drainage lines 221, the plurality of first strengthening lines 222a and the plurality of second strengthening lines 222b are woven together into a net structure with warp and weft crossing. The strengthening line 222 can support and fix the water absorption and drainage line 221, so as to improve the strength of the water absorption and drainage line 221 and prevent the water absorption and drainage line 221 from bending, so as to ensure the smooth drainage of the water absorption and drainage line 221.

[0053] In the above embodiment, the plurality of water absorption and drainage lines 221 and the plurality of strengthening lines 222 are woven together into a net structure, which can improve the strength of the water absorption and drainage layer 22, thereby enhancing the reliability of the structure of the geotextile 2.

[0054] In some embodiments of the present invention, referring to Figure 4 shown, the water absorption and drainage layer 22 further includes: a plurality of water storage particles 223, and the plurality of water storage particles 223 are evenly distributed and fixed to the net structure.

[0055] Among them, the material of the water storage particles 223 can be a superabsorbent resin. The water storage particles 223 can be used to absorb or release moisture. The water storage particles 223 can have a three-dimensional network structure composed of a plurality of irregular pores. A plurality of water storage particles 223 are evenly distributed and fixed to the mesh structure. The water storage particles 223 can improve the water absorption capacity of the water absorption and drainage layer 22. The capillary water in the embankment body 1 can be adsorbed by the water storage particles 223 through the first membrane layer 21 or the second membrane layer 23, thereby reducing the water content of the embankment body 1. In addition, when the moisture in the water absorption and drainage layer 22 increases too fast due to rain, the water pressure in the water absorption and drainage layer 22 rises. A plurality of water storage particles 223 can quickly accumulate moisture in a short time to relieve the drainage pressure of the drainage line 221. As the drainage line 221 gradually discharges the moisture in the water absorption and drainage layer 22, the water pressure in the water absorption and drainage layer 22 gradually decreases, causing the water storage particles 223 to gradually release the stored moisture, so that the drainage line 221 can drain the moisture into the drain pipe 3, thereby reducing the drainage pressure of the drainage line 221 and ensuring the smooth drainage of the drainage line 221.

[0056] In the above embodiment, a plurality of water storage particles 223 are evenly distributed and fixed to the mesh structure. A plurality of water storage particles 223 can evenly absorb the capillary water in the embankment body 1 on both sides of the geotextile 2, ensuring that the water content in different regions of the embankment body 1 is consistent. At the same time, the water storage particles 223 can also reduce the drainage pressure of the drainage line 221 and improve the water absorption and drainage capacity of the geotextile 2.

[0057] In some embodiments of the present invention, referring to Figure 1 As shown, in the direction of gravity, the height of the drain pipe 3 is at least partially lower than the height of the geotextile 2.

[0058] Specifically, in the up and down direction, the height of the drain pipe 3 is at least partially lower than the height of the geotextile 2, so that the moisture in the geotextile 2 can flow into the drain pipe 3 under the action of gravity, thereby facilitating the improvement of the water absorption and drainage efficiency of the geotextile 2.

[0059] In some embodiments of the present invention, referring to Figure 1 As shown, on both sides of the embankment body 1 in the width direction, drain pipes 3 are provided on both sides of the geotextile 2, and both ends of the water absorption and drainage layer 22 are respectively communicated with the corresponding drain pipes 3 on both sides of the geotextile 2.

[0060] Specifically, in the width direction of the embankment body 1, that is, Figure 1 in the left and right directions in

[0061] It should be noted that the water absorption and drainage line 221 extends in the left-right direction, that is, the water absorption and drainage line 221 extends along the width direction of the embankment main body 1, so that the moisture in the water absorption and drainage layer 22 can smoothly flow into the drain pipe 3 along the extension direction of the water absorption and drainage line 221, which is beneficial to improving the drainage effect of the water absorption and drainage layer 22.

[0062] In some embodiments of the present invention, referring to Figure 8 As shown, the drain pipe 3 includes: an inner pipe 31, an outer pipe 32 and an elastic support member 33. The inner pipe 31 is formed with a drainage channel 311. The outer pipe 32 is sleeved outside the inner pipe 31. The elastic support member 33 is connected between the inner pipe 31 and the outer pipe 32. Among them, the water absorption and drainage layer 22 penetrates through the outer pipe 32 and the inner pipe 31 and communicates with the drainage channel 311.

[0063] Specifically, the outer pipe 32 is sleeved outside the inner pipe 31. That is to say, the drain pipe 3 can be a double-layer structure. The diameter of the inner pipe 31 can be 16 cm. The material of the inner pipe 31 can be high-density polyethylene. The inner pipe 31 has a smooth pipe wall and forms a drainage channel 311, so as to facilitate the smooth flow of moisture in the drainage channel 311, prevent sediment from accumulating in the drainage channel 311, reduce the risk of blockage of the drain pipe 3. The diameter of the outer pipe 32 can be 20 cm. The material of the outer pipe 32 can be polyvinyl chloride. Polyvinyl chloride has good chemical resistance and relatively high mechanical strength. The outer pipe 32 is sleeved outside the inner pipe 31 to reduce the risk of deformation or rupture of the inner pipe 31 when the drain pipe 3 is landfilled. At the same time, the elastic support member 33 is connected between the inner pipe 31 and the outer pipe 32 to connect and support the inner pipe 31 and the outer pipe 32. When the extrusion force on the outer pipe 32 changes, the elastic support member 33 can absorb energy through deformation to reduce the impact of the external extrusion force on the inner pipe 31, reduce the deformation amount of the inner pipe 31, reduce the risk of deformation, damage of the inner pipe 31 and reduction of the flow area of the drainage channel 311, and improve the reliability and service life of the inner pipe 31.

[0064] Referring to Figure 8 As shown, the elastic support member 33 can include a plurality of plate-shaped metal brackets 331. The metal brackets 331 can be high-strength alloy material parts, such as aluminum alloy material parts. When manufacturing the drain pipe 3, a plurality of plate-shaped metal brackets 331 can be connected in pairs to form a "V" shape and arranged at intervals along the circumferential direction of the drain pipe 3. One end of the two connected metal brackets 331 is connected to the inner pipe 31 and forms an included angle α. The other ends of the two connected metal brackets 331 are separated and respectively connected to the outer pipe 32. When the extrusion force on the drain pipe 3 increases, the distance between the inner pipe 31 and the outer pipe 32 decreases, and the included angle α between the two connected metal brackets 331 increases to absorb the extrusion force and reduce the risk of deformation of the inner pipe 31, so as to improve the structural stability of the inner pipe 31.

[0065] In some other embodiments of the present invention, the elastic support 33 can also be configured as a pneumatic strut, a spring or other structures.

[0066] In some embodiments of the present invention (not shown in the figures), the outer tube 32 is configured as a corrugated pipe.

[0067] Specifically, the outer tube 32 is configured as a corrugated pipe. The corrugated design can enhance the ring stiffness of the outer tube 32, improve the compressive and anti-deformation properties of the outer tube 32. When laying the drain pipe 3, the outer tube 32 is not easily deformed and recessed towards the inner tube 31, thereby reducing the risk of the inner tube 31 being squeezed and deformed or damaged, ensuring the flow area of the drainage channel 311, enabling the moisture to flow rapidly in the drainage channel 311, and thus facilitating ensuring the drainage volume of the drain pipe 3.

[0068] In some embodiments of the present invention, referring to Figure 1 as shown, the geotextile 2 has the same outer surface shape as the embankment main body 1, and the spacing distance between the geotextile 2 and the outer surface of the embankment main body 1 is equal everywhere.

[0069] Specifically, the geotextile 2 has the same outer surface shape as the embankment main body 1. The geotextile 2 is laid inside the embankment main body 1. That is to say, the size of the geotextile 2 is smaller than that of the embankment main body 1. The spacing distance between the geotextile 2 and the outer surface of the embankment main body 1 is equal everywhere. It can be understood that in the up and down direction, the water absorption and drainage effects of the geotextile 2 on the embankment main body 1 at the same height are the same, and the water content difference of the embankment main body 1 at the same height is small, thereby ensuring the uniform humidity of the embankment main body 1, reducing the difference in structural strength of different regions of the embankment main body 1, and reducing the risk of local collapse of the embankment main body 1.

[0070] In some embodiments of the present invention, referring to Figure 1 as shown, the spacing distance between the geotextile 2 and the outer surface of the embankment main body 1 is D, satisfying the relational expression 15 cm ≤ D ≤ 100 cm.

[0071] Wherein, the spacing distance between the geotextile 2 and the outer surface of the embankment main body 1 is D. It can be understood that the geotextile 2 can be laid on the outer surface of the lower part 12 of the embankment, and then the outer surface of the geotextile 2 is filled with soil. It is necessary to continuously thicken the soil layer above the geotextile 2 to form an embankment upper part 11 with a thickness of 15 cm to 100 cm. The thickness of the embankment upper part 11 is the spacing distance D. If D < 15 mm, the thickness of the embankment main body 1 above the geotextile 2 is relatively thin, and the geotextile 2 is easily exposed on the outer surface of the embankment main body 1, resulting in the geotextile 2 being easily damaged. If D > 100 mm, the thickness of the embankment main body 1 above the geotextile 2 is too thick. During heavy rain, more water accumulates on the embankment main body 1 above the geotextile 2, and the geotextile 2 cannot drain the rainwater of the embankment main body 1 in time, reducing the stability of the embankment main body 1. Optionally, D = 30 cm, D = 50 cm, or D = 80 cm.

[0072] In the above embodiments, the spacing distance between the geotextile 2 and the outer surface of the embankment main body 1 is D, satisfying the relational expression 15 cm ≤ D ≤ 100 cm, so that the embankment main body 1 is fully wrapped on the surface of the geotextile 2, avoiding damage to the geotextile 2. At the same time, the geotextile 2 can timely absorb rainwater or capillary water in the embankment main body 1, reduce the water content of the embankment main body 1, thereby enhancing the durability and safety of the drainage embankment 10.

[0073] In some embodiments of the present invention, the drainage embankment 10 further includes: a drainage ditch 4, which is arranged on both sides in the width direction of the embankment main body 1, that is, the drainage ditch 4 is arranged on the left and right sides of the embankment main body 1. At the same time, in the direction of gravity, the height of the drainage ditch 4 is at least partially lower than the height of the drain pipe 3.

[0074] Specifically, when the water content of the upper part 11 of the embankment is saturated, most of the rainwater in the rainfall will flow into the drainage ditch 4 along the outer surface of the upper part 11 of the embankment, and the water will flow out of the embankment main body 1 along the drainage ditch 4 to improve the drainage efficiency of the drainage embankment 10. In addition, the drain pipe 3 can also drain water from the embankment main body 1 through the drainage ditch 4.

[0075] In some embodiments of the present invention, the drainage embankment 10 further includes: an impermeable layer 5, and in the direction of gravity, the embankment main body 1 is arranged above the impermeable layer 5.

[0076] Specifically, the impermeable layer 5 can be a structural layer composed of gravel or gravel materials, or can also adopt the method of coating film or cement interlayer. The impermeable layer 5 can be laid at the bottom of the embankment main body 1 to prevent the influence of the rising water level of capillary water in the soil on the construction area, thereby improving the stability and bearing capacity of the drainage embankment 10.

[0077] In some embodiments of the present invention, the construction method of the drainage embankment 10 includes the following steps:

[0078] Step S1, construction preparation: Clean the construction site, check the flatness of the foundation, ensure that there are no sundries on the construction site, conduct quality inspections on the geotextile 2, drain pipe 3 and related embedded components, confirm whether the materials meet the design requirements, and formulate detailed construction plans and safety technical measures.

[0079] Step S2, foundation treatment: Compact the construction area of the drainage embankment 10, and the impermeable layer 5 can be selected according to needs; delimit the construction area of the embankment main body 1 according to the design drawings, and reinforce the stability of the slopes of the drainage embankment 10. The layout of the embedded components and the drain pipe 3 needs to meet the design requirements. When embedding the drain pipe 3 in the embankment main body 1, perforations or reserved channels need to be opened on the drain pipe 3 to facilitate the effective connection between the subsequent water absorption and drainage layer 22 and the drain pipe 3.

[0080] Step S3, laying of geotextile 2: Lay the geotextile 2 on the embankment body 1 in accordance with the designed direction and position, ensuring that the water absorption and drainage layer 22 corresponds one-to-one with the pre-buried drain pipe 3. During laying, keep the fabric of the geotextile 2 flat and free of wrinkles to avoid affecting the subsequent water absorption and drainage effect.

[0081] Step S4, docking of the drain pipe 3 and the geotextile 2: According to the design requirements, penetrate the end of the water absorption and drainage line 221 radially along the drain pipe 3 to ensure seamless connection between the geotextile 2 and the drain pipe 3. Seal the connection part to prevent water leakage during construction and use. After the installation of the geotextile 2 and the drain pipe 3 is completed, the embankment body 1 needs to be backfilled in layers, and the thickness of each layer can be controlled between 15 cm and 25 cm. After each layer of backfilling, mechanical compaction treatment is adopted to ensure that the geotextile 2 and the drain pipe 3 are stably embedded in the embankment body 1, thereby ensuring the stability and compactness of the overall structure of the drainage embankment 10.

[0082] Step S5, commissioning and acceptance of the drainage embankment 10: After construction, conduct a water test. Simulate working conditions such as heavy rain or high water pressure by manually filling water to detect the drainage effect of the drain pipe 3 and the water collection capacity of the geotextile 2, check the sealing of each connection part and the overall drainage smoothness, and rectify the problems found until the drainage embankment 10 meets the design requirements. Develop a regular inspection and maintenance plan to ensure the stable performance of the drainage embankment 10 during long-term use.

[0083] The drainage embankment 10 according to the embodiment of the present invention has at least the following advantages:

[0084] 1. The geotextile 2 and the drain pipe 3 work together to achieve rapid water absorption and efficient drainage of the drainage embankment 10, and can maintain a good working state under high-pressure conditions, ensuring reasonable dynamic regulation of the humidity of the embankment body 1 and the overall stability of the drainage embankment 10.

[0085] 2. The design of the embankment structure 10 fully considers the economy and environmental protection of materials. The geotextile 2 and the drain pipe 3 have excellent material properties and good weather resistance, so as to reduce the risk of damage to the drainage embankment 10, improve the durability and safety of the drainage embankment 10, and can work stably for a long time and reduce the maintenance frequency and replacement cost.

[0086] 3. The drainage embankment 10 has a simple structure and convenient construction, and can adapt to various complex terrains and changeable climate conditions. Whether it is sunny or rainy, it can maintain good drainage performance. At the same time, it is applicable to various high-humidity, rainy or waterlogged areas, and the drainage embankment 10 can be built in areas such as highways, railways and slopes, with significant economic benefits, environmental protection advantages and good popularization and application prospects.

[0087] In the description of this specification, the descriptions referring to terms such as "one embodiment", "some embodiments", "examples", "specific examples", or "some examples", etc., mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

[0088] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A drainage embankment, characterized in that, Comprising: An embankment body (1), the embankment body (1) being made of soil material; A geotextile (2), the geotextile (2) being at least partially laid inside the embankment body (1), the geotextile (2) including a first film layer (21), a water absorption and drainage layer (22), and a second film layer (23) arranged in a stacked manner, and the water permeability of the first film layer (21) and the second film layer (23) being negatively correlated with the water pressure; A drain pipe (3), the water pipe being penetrated through the embankment body (1), and the water absorption and drainage layer (22) being communicated with the drain pipe (3).

2. The drainage embankment according to claim 1, characterized in that, The water absorption and drainage layer (22) includes: a plurality of water absorption and drainage lines (221), and the ends of the water absorption and drainage lines (221) are penetrated through the drain pipe (3); The water absorption and drainage lines (221) are composed of a plurality of wicking fibers (2211) wound around, and at least one water guiding groove (22111) extending along the length direction is provided on the outer surface of the wicking fibers (2211).

3. The drainage embankment according to claim 2, wherein The water absorption and drainage layer (22) further includes: a plurality of strengthening lines (222), and the plurality of water absorption and drainage lines (221) and the plurality of strengthening lines (222) are woven together into a net structure.

4. The drainage embankment according to claim 3, wherein, The water absorption and drainage layer (22) further includes: a plurality of water storage particles (223), and the plurality of water storage particles (223) are evenly distributed and fixed to the net structure.

5. The drainage embankment according to claim 1, characterized in that, In the direction of gravity, at least part of the height of the drain pipe (3) is lower than the height of the geotextile (2).

6. The drainage embankment according to claim 1, characterized in that, On the width direction of the embankment body (1), the drain pipes (3) are provided on both sides of the geotextile (2), and both ends of the water absorption and drainage layer (22) are respectively communicated with the drain pipes (3) corresponding to both sides of the geotextile (2).

7. The drainage embankment according to claim 1, wherein, The drain pipe (3) includes: An inner pipe (31), the inner pipe (31) being formed with a drainage channel (311); An outer pipe (32), the outer pipe (32) being sleeved outside the inner pipe (31); An elastic support member (33), the elastic support member (33) being connected between the inner pipe (31) and the outer pipe (32); Wherein, the water absorption and drainage layer (22) is penetrated through the outer pipe (32) and the inner pipe (31) and communicated with the drainage channel (311).

8. The drainage embankment according to claim 7, wherein, The outer pipe (32) is configured as a corrugated pipe.

9. The drainage embankment according to any one of claims 1-8, characterized in that, The geotextile (2) has the same outer surface shape as the embankment body (1), and the distance between the geotextile (2) and the outer surface of the embankment body (1) is equal everywhere.

10. The drainage embankment according to claim 9, wherein The distance between the geotextile (2) and the outer surface of the embankment body (1) is D, satisfying the relational expression 15 cm ≤ D ≤ 100 cm.

Images