Internal drainage system suitable for landscape retaining wall

Abstract

The utility model relates to the technical field of inner drainage of retaining walls, and discloses an inner drainage system suitable for a landscape retaining wall, which comprises a retaining wall, a clay layer and a permeable layer are arranged on the inner side of a vertical plate of the retaining wall, a water collecting pipeline extending along the length direction of the retaining wall is arranged in the permeable layer, and the water collecting pipeline is communicated with a plurality of water collecting wells. The multiple water collecting wells are arranged at intervals in the extending direction of the water collecting pipeline. The lower portion of the water collecting well communicates with a municipal rainwater pipeline through a drainage pipe, an anti-seepage layer for blocking seepage water is laid at the bottom of the water permeable layer, the anti-seepage layer is arranged between the water permeable layer and the clay layer, and the anti-seepage layer is arranged in a downward inclined and extending mode in the direction facing the water collecting pipeline; when water falls into the permeable layer, the water penetrates through the permeable layer or flows along the impermeable layer to be collected into the water collecting pipeline, then is discharged into the water collecting well and is discharged into a municipal rainwater pipeline through the drainage pipe. In this way, all surface water in the backfilling range is collected to the water collecting pipeline and then discharged into a municipal rainwater pipeline through the water discharging pipe.

Description

Technical Field

[0001] The utility model patent relates to the technical field of internal drainage of retaining walls, and specifically, to an internal drainage system suitable for landscape retaining walls. Background Art

[0002] In various building foundation and slope reinforcement projects, retaining walls are usually used to prevent soil instability and ensure the stability of the soil behind the wall. When designing retaining walls, water pressure is one of the important factors affecting the water-soil side pressure behind the retaining wall. Retaining walls are generally made of reinforced concrete or rubble, mortar and other materials that are not easy to penetrate. To ensure smooth drainage, drainage pipes are often buried in the retaining wall. During long-term use, the drainage pipes will be clogged due to soil particles carried by rainwater filling the pores of the filter, and it will be difficult to repair them later. For landscape retaining walls adjacent to municipal roads, muddy water discharged along the drainage pipes will also cause wall pollution and affect the appearance. Therefore, it is necessary to consider the use of internal drainage.

[0003] In the prior art, the drainage system in the retaining wall generally adopts blind ditch pipe for drainage, but there are also some problems. Since the blind ditch pipe is only arranged along the inner side close to the retaining wall vertical plate and extends along the length direction of the retaining wall, and due to the factor of the soil layer behind the wall, the vertical infiltration speed of the surface water behind the retaining wall is slow, resulting in that the amount of water finally collected in the blind ditch pipe is very limited, and thus the drainage problem cannot be truly solved. Utility Model Content

[0004] The utility model aims to provide an internal drainage system suitable for landscape retaining walls, aiming to solve the problem of poor drainage effect of the internal drainage system of retaining walls in the prior art.

[0005] The utility model is implemented in this way, and is applicable to the internal drainage system of the landscape retaining wall, comprising a retaining wall, wherein the inner side of the vertical plate of the retaining wall has a backfill area, and the backfill area includes, from bottom to top, a clay layer formed by backfilling clay and a permeable layer formed by backfilling crushed stone and pebbles; a water collection pipeline extending along the length direction of the retaining wall is arranged in the permeable layer, and the water collection pipeline is connected to a plurality of water collection wells, and the plurality of water collection wells are arranged at intervals along the extension direction of the water collection pipeline;

[0006] The lower part of the water collection well is connected to the municipal rainwater pipe through a drainage pipe. An anti-seepage layer for blocking water seepage is laid at the bottom of the permeable layer. The anti-seepage layer is arranged between the permeable layer and the clay layer. Along the direction of the water collection pipe, the anti-seepage layer is extended downwardly and inclined. When water falls into the permeable layer, the water passes through the permeable layer or flows along the anti-seepage layer to be collected in the water collection pipe, and then discharged into the water collection well, and discharged into the municipal rainwater pipe through the drainage pipe.

[0007] Optionally, the water collection pipeline includes a blind ditch pipe, a seepage layer made of permeable material, and a reinforcement layer formed by wrapping a non-woven geotextile, the seepage layer is wrapped around the outer periphery of the blind ditch pipe, and the reinforcement layer is wrapped around the outer periphery of the seepage layer; the water in the permeable layer enters the blind ditch pipe through the reinforcement layer and the seepage layer in turn.

[0008] Optionally, the reinforcement layer is formed by non-woven geotextiles that are overlapped end to end and fixed to each other.

[0009] Optionally, the water collection pipeline transversely penetrates the upper part of the water collection well, and the top of the water collection well is fixedly covered with a reinforced concrete cover plate.

[0010] Optionally, a first concrete cushion layer is provided in the water-permeable layer, the bottom of the reinforcement layer is pressed against the first concrete cushion layer, and the first concrete cushion layer is extended along the extension direction of the water collection pipeline.

[0011] Optionally, the bottom of the drain pipe is pressed against a second concrete cushion layer, and the second concrete cushion layer is extended along the extension direction of the drain pipe.

[0012] Optionally, the drainage pipe transversely penetrates the lower part of the water collection well, and the bottom of the water collection well is in a closed arrangement.

[0013] Optionally, the water collection pipeline includes a plurality of water collection sections arranged in a front-to-back manner, and ends of the water collection sections penetrate transversely into the water collection wells, so that adjacent water collection wells are interconnected.

[0014] Optionally, the upper part of the water collection well is embedded in the permeable layer, the lower part of the water collection well is located in the clay layer, the anti-seepage layer abuts against the outer circumference of the water collection well, and the drainage pipe and the municipal rainwater pipe are laid in the clay layer.

[0015] Optionally, the top of the permeable layer is flush with the top of the retaining wall.

[0016] Compared with the prior art, the internal drainage system suitable for landscape retaining walls provided by the utility model forms a clay layer and a gravel layer by backfilling clay and gravel behind the wall. Since the gravel layer is formed by backfilling with materials with high water permeability, such as gravel, the surface water within the backfill range can penetrate downward, and through the structural arrangement of the anti-seepage layer, the surface water within the backfill range can all be collected into the water collection pipeline and enter the water collection well. The water in the lower part of the water collection well is discharged into the municipal rainwater pipe through the drainage pipe, which solves the problem that the retaining wall drainage pipe is easy to be clogged and the water flow pollutes the vertical wall surface of the retaining wall, and can also solve the problem of limited drainage of blind ditch pipes in actual projects. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1It is a cross-sectional schematic diagram of an internal drainage system applicable to a landscape retaining wall provided by the utility model;

[0018] Figure 2 It is a schematic diagram of the structure of the water collection pipeline, water collection well, drainage pipe and municipal rainwater pipe provided by the utility model;

[0019] Figure 3 It is a cross-sectional schematic diagram of an internal drainage system applicable to a landscape retaining wall provided by the utility model;

[0020] Figure 4 It is a cross-sectional schematic diagram of the water collection pipeline provided by the utility model. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0022] The implementation of the present utility model is described in detail below in conjunction with specific embodiments.

[0023] The same or similar numbers in the drawings of this embodiment correspond to the same or similar parts; in the description of the present utility model, it should be understood that if the terms "upper", "lower", "left", "right" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, it is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limitations on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0024] Reference Figure 1-4 As shown, it is a preferred embodiment provided by the utility model.

[0025] The utility model provides an internal drainage system suitable for landscape retaining walls, comprising a retaining wall 100, wherein the inner side of the vertical plate of the retaining wall 100 is provided with a backfill area, wherein the backfill area includes, from bottom to top, a clay layer formed by backfilling clay and a permeable layer formed by backfilling gravel and pebbles; a water collection pipeline 200 extending along the length direction of the retaining wall 100 is arranged in the permeable layer, and the water collection pipeline 200 is connected to a plurality of water collection wells 300, and the plurality of water collection wells 300 are arranged at intervals along the extension direction of the water collection pipeline 200;

[0026] The lower part of the water collection well 300 is connected to the municipal rainwater pipe 500 through the drainage pipe 400. An anti-seepage layer is laid at the bottom of the permeable layer to block water seepage. The anti-seepage layer is arranged between the permeable layer and the clay layer. Along the direction of the water collection pipeline 200, the anti-seepage layer is arranged to extend downward in an inclined direction. When water falls into the permeable layer, the water passes through the permeable layer or flows along the anti-seepage layer to be collected in the water collection pipeline 200, and then discharged into the water collection well 300, and discharged into the municipal rainwater pipe 500 through the drainage pipe 400.

[0027] The internal drainage system suitable for landscape retaining walls provided above forms a clay layer and a gravel layer by backfilling clay and gravel behind the wall. Since the gravel layer is formed by backfilling with materials with high water permeability, such as gravel, the surface water within the backfill range can penetrate downward, and through the structural arrangement of the anti-seepage layer, the surface water within the backfill range can all be collected into the water collection pipe 200 and enter the water collection well 300. The water in the lower part of the water collection well 300 is discharged into the municipal rainwater pipe 500 through the drainage pipe 400, which solves the problem that the drainage pipe 400 of the retaining wall 100 is easy to be clogged and the water flow pollutes the vertical wall surface of the retaining wall 100, and can also solve the problem of limited drainage of the blind ditch pipe 301 in actual engineering.

[0028] The water collection pipeline 200 includes a blind ditch pipe 301, a water-permeable layer 302 made of a water-permeable material, and a reinforcement layer 303 formed by wrapping a non-woven geotextile. The water-permeable layer 302 is wrapped around the outer periphery of the blind ditch pipe 301, and the reinforcement layer 303 is wrapped around the outer periphery of the water-permeable layer 302; the water in the water-permeable layer enters the blind ditch pipe 301 through the reinforcement layer 303 and the water-permeable layer 302 in sequence. In this way, by wrapping the water-permeable layer 302 around the outer periphery of the blind ditch pipe 301, the contact area between the blind ditch pipe 301 and the water-permeable layer is increased, and an additional channel is provided, so that the water in the water-permeable layer can more easily penetrate into the blind ditch pipe 301. In this way, the water in the water-permeable layer can be more effectively collected and guided to the water collection well 300.

[0029] Furthermore, the nonwoven geotextile has good water permeability and certain structural strength, so the main function of the reinforcement layer 303 is to protect the water seepage layer 302 and prevent it from being damaged when subjected to external pressure or deformation, thereby ensuring the long-term stability and effectiveness of the water collection pipeline 200. In addition, the nonwoven geotextile can also provide a certain friction force to help fix the position of the blind ditch pipe 301 and the water seepage layer 302 and prevent them from moving under the scouring of water flow.

[0030] Specifically, the reinforcement layer 303 is formed by overlapping the non-woven geotextiles end to end and fixing them to each other. The overlapping portion is formed on the top of the reinforcement layer 303.

[0031] The water collecting pipeline 200 runs horizontally through the upper part of the water collecting well 300, and the top of the water collecting well 300 is fixedly covered with a reinforced concrete cover plate 210. In this way, it is prevented that stones enter the water collecting well 300 under the action of gravity and cause blockage.

[0032] As a preferred embodiment, the water collection pipeline can be designed to have a certain slope so that the water can be better guided to the water collection well 300.

[0033] A first concrete cushion layer 310 is provided in the permeable layer, and the bottom of the reinforcement layer 303 is pressed against the first concrete cushion layer 310, and the first concrete cushion layer 310 is arranged along the extension direction of the water collection pipeline 200. In this way, better support is provided, and water is effectively prevented from penetrating through the gap to the bottom of the water collection pipeline 200, ensuring the normal operation of the water collection pipeline 200, and at the same time helping to position and fix the water collection pipeline 200.

[0034] The bottom of the drain pipe 400 is pressed against the second concrete cushion layer 410, and the second concrete cushion layer 410 is extended and arranged along the extension direction of the drain pipe 400. In this way, better support is provided, and positioning and fixing are also facilitated.

[0035] The drainage pipe 400 runs horizontally through the lower part of the water collection well 300, and the bottom of the water collection well 300 is arranged in a closed manner. In this way, this design helps to prevent groundwater or other liquids in the soil from penetrating into the drainage system through the bottom of the water collection well 300, thereby avoiding blockage and pollution of the drainage system. At the same time, it can also increase the structural stability of the water collection well 300 and prevent it from deforming or collapsing. At the same time, the drainage pipe 400 runs horizontally through the water collection well 300 so that it can play a role of buffering and regulation, cope with the fluctuation of the water volume in the permeable layer, and maintain the stability of the drainage system.

[0036] Specifically, the water collecting pipeline 200 includes a plurality of water collecting sections arranged in a front-to-back spacing, and the ends of the water collecting sections extend transversely through the water collecting wells 300, so that adjacent water collecting wells 300 are interconnected. In this way, the multi-section type is convenient for maintenance and the like.

[0037] The upper part of the water collection well 300 is embedded in the permeable layer, the lower part of the water collection well 300 is located in the clay layer, the impermeable layer is abutted against the outer periphery of the water collection well 300, and the drainage pipe 400 and the municipal rainwater pipe 500 are arranged in the clay layer. In this way, the upper part of the water collection well 300 is used to communicate with the water collection pipeline 200 and needs to be exposed in the permeable layer, the impermeable layer is abutted against the outer periphery of the water collection well 300 to prevent the water body from penetrating downward into the clay layer through the outer periphery of the water collection well 300, the lower part of the water collection well 300 is embedded in the clay layer to effectively fix the water collection well 300, the drainage pipe 400 and the municipal rainwater pipe 500 are located in the clay layer, and the fixation is strengthened to ensure that the overall structure does not move.

[0038] Specifically, the top of the permeable layer is flush with the top of the retaining wall 100. In this way, the landscape continuity is achieved, and the flush permeable layer and the top of the retaining wall 100 make the landscape more continuous and unified visually. Such a design helps to create a harmonious and beautiful environment, and the flush permeable layer helps to prevent soil erosion. It also helps to drain the accumulated water on the top of the retaining wall 100 into the permeable layer.

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

Claims

1. Applicable to the internal drainage system of landscape retaining wall, characterized by: The invention comprises a retaining wall, wherein the inner side of the vertical plate of the retaining wall has a backfill area, wherein the backfill area comprises, from bottom to top, a clay layer formed by backfill clay and a permeable layer formed by backfill gravel and pebbles; a water collection pipeline extending along the length direction of the retaining wall is arranged in the permeable layer, wherein the water collection pipeline is connected to a plurality of water collection wells, and the plurality of water collection wells are arranged at intervals along the extension direction of the water collection pipeline; The lower part of the water collection well is connected to the municipal rainwater pipe through a drainage pipe. An anti-seepage layer is laid at the bottom of the permeable layer to block water seepage. The anti-seepage layer is arranged between the permeable layer and the clay layer. Along the direction of the water collection pipe, the anti-seepage layer is extended downwardly. When water falls into the permeable layer, the water passes through the permeable layer, flows along the anti-seepage layer, and is collected in the water collection pipe, and then discharged into the water collection well, and discharged into the municipal rainwater pipe through the drainage pipe.

2. The internal drainage system suitable for landscape retaining wall according to claim 1, characterized in that: The water collection pipeline includes a blind ditch pipe, a seepage layer made of permeable material and a reinforcement layer formed by wrapping a non-woven geotextile. The seepage layer is wrapped around the outer periphery of the blind ditch pipe, and the reinforcement layer is wrapped around the outer periphery of the seepage layer. The water in the permeable layer enters the blind ditch pipe through the reinforcement layer and the seepage layer in turn.

3. The internal drainage system suitable for landscape retaining wall according to claim 2, characterized in that: The reinforcement layer is formed by overlapping the non-woven geotextiles end to end and fixing them to each other.

4. The internal drainage system suitable for landscape retaining wall according to claim 1, characterized in that: The water collection pipeline runs transversely through the upper part of the water collection well, and the top of the water collection well is fixedly covered with a reinforced concrete cover plate.

5. The internal drainage system suitable for landscape retaining wall according to claim 2, characterized in that: A first concrete cushion layer is arranged in the water-permeable layer, the bottom of the reinforcement layer is pressed against the first concrete cushion layer, and the first concrete cushion layer is extended along the extension direction of the water collection pipeline.

6. The internal drainage system suitable for landscape retaining wall according to claim 1, characterized in that: The bottom of the drainage pipe is pressed against a second concrete cushion layer, and the second concrete cushion layer is extended along the extension direction of the drainage pipe.

7. The internal drainage system suitable for landscape retaining wall according to claim 1, characterized in that: The drainage pipe runs transversely through the lower part of the water collection well, and the bottom of the water collection well is in a closed arrangement.

8. The internal drainage system suitable for landscape retaining wall according to claim 1, characterized in that: The water collection pipeline includes a plurality of water collection sections arranged in a front-to-back spacing, and the ends of the water collection sections penetrate into the water collection wells transversely, so that the adjacent water collection wells are interconnected.

9. The internal drainage system applicable to landscape retaining walls according to any one of claims 1 to 8, characterized in that: The upper part of the water collection well is embedded in the permeable layer, the lower part of the water collection well is located in the clay layer, the anti-seepage layer abuts against the outer periphery of the water collection well, and the drainage pipe and the municipal rainwater pipe are arranged in the clay layer.

10. The internal drainage system suitable for landscape retaining walls according to any one of claims 1 to 8, characterized in that: The top of the permeable layer is flush with the top of the retaining wall.

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