CN217998317U - Barricade drainage system - Google Patents
Barricade drainage system Download PDFInfo
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- CN217998317U CN217998317U CN202222037186.0U CN202222037186U CN217998317U CN 217998317 U CN217998317 U CN 217998317U CN 202222037186 U CN202222037186 U CN 202222037186U CN 217998317 U CN217998317 U CN 217998317U
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Abstract
The utility model provides a barricade drainage system, drainage channel in the barricade wall body, before drainage channel passed the barricade wall, set up in backfilling the concrete before the wall in to link to each other with the water inlet of drainage ditch before the wall, be equipped with the concrete water barrier at the drainage channel entrance behind the barricade wall, be equipped with vertical basin in the concrete water barrier, vertical basin links to each other with drainage channel through the transition basin, the three direction of backfill soil all sets up the sand-free concrete board that permeates water behind the wall, the sand-free concrete board top that permeates water of backfill soil both sides all is equipped with the concrete seal. By arranging the longitudinal water tank behind the wall, accumulated water behind the wall is effectively collected, and the functions of drainage and isolation are realized; the arranged drainage channel and the transition water tank can smoothly drain water, so that the drainage effect behind the wall is greatly improved; the water-permeable sand-free concrete drainage plate increases the drainage area, effectively prevents silting, prevents the flow surface of the drainage channel in front of the wall from being lower than the top of the backfill concrete and the top of the ditch in front of the wall, and prevents the phenomenon that slurry pollutes the wall surface.
Description
Technical Field
The utility model relates to a fields such as railway, highway, municipal administration, building, foundation ditch, earthwork excavation especially relate to a barricade drainage system.
Background
As shown in fig. 1, a point-type drainage scheme is adopted in the prior art, a drainage hole is generally arranged at intervals of 2m on each of the upper, lower, left and right sides of a retaining wall 1, a PVC drainage pipe 2 is inserted into the drainage hole, and in order to prevent soil behind the wall from losing, a water inlet of the drainage pipe 2 is wrapped by a permeable geotextile. Backfill soil 4 is adopted to backfill behind the wall, a first water-stop layer 5, a second water-stop layer 7 and a permeable layer 6 are arranged behind the wall, when water is accumulated in a soil layer outside the slope excavation line 3 behind the wall, the water can permeate into the backfill layer 4, the water accumulated in the backfill layer 4 can permeate into the permeable layer 6, when the water level in the permeable layer 6 reaches the water inlet of the drain pipe 2, the accumulated water can flow to the front of the wall through the drain pipe 2, and flows to the front wall drain ditch 9 along the wall surface of the retaining wall 1 and the top of the front wall backfill layer 8, so that the rear wall drainage process is completed.
In the current drainage scheme, the drainage pipes 2 are generally arranged at intervals of 2m up, down, left and right, when accumulated water reaches the water inlet of the drainage pipe 2, the water can be drained, but the accumulated water between the two drainage pipes on the horizontal plane cannot be drained smoothly, mainly accumulates in the permeable layer 6 and finally permeates back to the backfill layer 4, so that the effect of the retaining wall drainage system is broken.
The permeable layer 6 is arranged behind the wall, so that accumulated water on the contact surface is discharged, but the contact surface is too small to effectively discharge the accumulated water, only the accumulated water on the soil layer of the contact surface can be discharged, the water content of the soil layer on the contact surface is reduced, the accumulated water in the surrounding soil is gradually caused to permeate to the contact surface, and the drainage path is longer; set up the water barrier 5 behind the wall, generally about 0.5m in horizontal width, hardly make the water level reach the height realization drainage of drain pipe 2 water inlet in this less width range, during water permeates the soil body on every side very easily, only when the soil horizon internal ponding is very much, the soil body on every side all saturates can form higher water level on water barrier 5, so, the drainage effect is unsatisfactory.
The water outlet pipe 2 is used for preventing soil particles and permeable layer particles from losing, a permeable geotextile is used for wrapping the water inlet, the diameter of the water outlet pipe 2 is generally 10cm, the permeable area is small, the geotextile is easily blocked by fine soil, the water outlet pipe cannot drain water, and a retaining wall drainage system fails; the geotextile is easy to weather, loses the function of preventing soil particles and permeable layer particles from flowing out after being damaged, and the soil particles and the permeable layer particles flow out after the wall, so that the stability of a soil body after the wall is influenced, and the drain pipe 2 is easy to block; the drain pipe 2 and the geotextile are easy to age and damage, so that the drain pipe 2 is blocked.
When ponding flows out through drain pipe 2 behind the wall, has adulterated earth, can leave muddy water vestige at the wall body during the outflow, especially the drain pipe of eminence, influences the wall body pleasing to the eye.
Therefore, it is an urgent problem to develop a retaining wall drainage system.
Disclosure of Invention
In view of this, the utility model aims at providing a barricade drainage system can improve the drainage effect behind the wall by a wide margin.
In order to solve the technical problem, the utility model discloses a technical scheme is:
a retaining wall drainage system comprises a plurality of drainage channels reserved in a retaining wall body, wherein the drainage channels penetrate through the front of a retaining wall and are arranged in backfill concrete in front of the wall, a front wall drainage channel is reserved on the side wall close to the retaining wall, and a water inlet is reserved and connected with the drainage channels;
a concrete water-resisting layer is arranged at the inlet of the drainage channel behind the retaining wall, a plurality of longitudinal water channels are arranged in the concrete water-resisting layer, drainage slopes are arranged on two sides of each longitudinal water channel to ensure that the longitudinal water channels are located at the lowest transverse point, the longitudinal water channels correspond to the drainage channels one by one, and the longitudinal water channels are connected with the drainage channel through transition water channels arranged in the concrete water-resisting layer;
and concrete sealing layers are respectively arranged on the top of the permeable sand-free concrete plate between the backfill soil and the retaining wall body and the top of the permeable sand-free concrete plate between the backfill soil and the retaining wall body and the retaining wall rear slope excavation line.
Furthermore, the drainage channel is circular, one drainage channel is reserved at every 10m-15m on the wall body of the retaining wall, the diameter of the drainage channel is 0.1m, and the drainage channel is provided with a slope of 4% -5% from the back of the retaining wall to the front of the wall.
Furthermore, the transverse width of the concrete waterproof layer is not less than 0.2m from the retaining wall to a slope excavation line behind the wall, and the longitudinal gradient is 0.5% -1%.
Furthermore, the two adjacent longitudinal water channels are arranged at an interval of 10m-15m, the depth and the width of each longitudinal water channel are not less than 0.1m, and the longitudinal gradient is consistent with that of the concrete waterproof layer.
Furthermore, 4% -5% of drainage slopes are arranged on the left side and the right side of the longitudinal water tank.
Furthermore, the included angles between the transition water tank and the longitudinal water tank and between the transition water tank and the drainage channel are not less than 45 degrees, and the transition water tank is provided with a gradient of 4% -5% along the water flowing direction.
Furthermore, a groove is arranged in the backfill concrete in front of the wall near the top, and the drainage channel is arranged in the groove and is opposite to a water inlet on the side wall of the drainage channel in front of the wall. The accumulated water of the drainage channel is ensured to enter the front drainage ditch of the wall, and meanwhile, the water flowing surface of the drainage channel is positioned below the front backfill concrete of the wall and the top surface of the front drainage ditch of the wall, so that the phenomenon that the wall surface is polluted by mud is prevented.
Furthermore, the intersection angle of the front wall drainage ditch and the drainage channel is 90 degrees.
Further, the height of the concrete sealing layer is not less than 0.5m.
Compared with the prior art, barricade drainage system have following advantage:
(1) The system is provided with the longitudinal water tank behind the wall, so that accumulated water behind the wall is effectively collected, and the functions of drainage and isolation are realized; the drainage channel and the transition water tank are arranged, so that the drainage channel is smooth, and the drainage effect behind the wall is greatly improved; through setting up the transition basin, realized the intercommunication of longitudinal trough and horizontal drainage channel, prevented that flowing water is in the perpendicular basin that turns round not smooth phenomenon of flowing water.
(2) This system has increaseed the horizontal width of bottom water barrier behind the wall, and the concrete water barrier top sets up the sand-free concrete drain bar that permeates water behind the wall, increases drainage area, effectively prevents to become silted up stifled, has avoided behind the wall soil grain to run off simultaneously.
(3) The system does not use geotextile and a plastic drain pipe, has no aging phenomenon, and avoids silting and soil particle loss after the wall caused by the aging phenomenon; and a permeable sand-free concrete plate is arranged between the backfill soil and the wall rear slope excavation line, so that the wall rear drainage efficiency is effectively improved.
(4) The flowing water surface of the front wall drainage channel of the system is lower than the top of the front wall backfill layer and the top of the front wall drainage ditch, so that the phenomenon that slurry pollutes the wall surface is prevented.
Drawings
The accompanying drawings, which form a part of the present disclosure, are included to provide a further understanding of the present disclosure, and are incorporated in and constitute a part of this specification, illustrate embodiments of the present disclosure and together with the description serve to explain the present disclosure. In the drawings:
FIG. 1 is a prior art retaining wall drainage scheme;
fig. 2 is a cross-sectional view of the retaining wall drainage system of the present invention;
fig. 3 is a plan view of the retaining wall drainage system of the present invention.
Description of the reference numerals:
1. retaining walls; 2. a drain pipe; 3. excavating a line on a slope behind the wall; 4. backfilling; 5. a first water-barrier layer; 6. a water permeable layer; 7. a second water-barrier layer; 8. a front backfill layer; 9. a front wall drainage ditch; 10. a concrete water-barrier layer; 11. a concrete seal layer; 12. a drainage channel; 13. a longitudinal water tank; 14. a transition water tank; 15. backfilling concrete before the wall; 16. a pervious concrete slab without sand.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, are not to be construed as limiting the present invention. Furthermore, the terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.
The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
As shown in figures 2 and 3, the retaining wall drainage system comprises a circular drainage channel 12 which is reserved on the wall body of the retaining wall 1 every 10-15m, the diameter of the drainage channel is 0.1m, and a slope of 4% -5% is arranged from the back of the retaining wall to the front of the wall. The drainage channel 12 is arranged in the backfill concrete 15 in front of the wall in the front wall range, the drainage ditch 9 in front of the wall is close to the side wall of the retaining wall 1, a water inlet is reserved on the side wall, the water inlet is connected with the drainage channel 12, and the intersection angle of the drainage channel 12 and the drainage ditch 9 in front of the wall is 90 degrees. A groove is arranged in the backfill concrete 15 at the front wall near the top, and the drainage channel 12 is arranged in the groove and is opposite to the water inlet on the side wall of the front wall drainage channel 9. The accumulated water of the drainage channel 12 is ensured to enter the front wall drainage ditch 9, and meanwhile, the water flowing surface of the drainage channel 12 is positioned below the front wall backfill concrete 15 and the top surface of the front wall drainage ditch 9, so that the phenomenon that slurry pollutes the wall surface is prevented.
A concrete water-stop layer 10 is arranged at an inlet of a drainage channel 12 behind the retaining wall 1, the transverse width of the concrete water-stop layer 10 is from the retaining wall 1 to a slope excavation line 3 behind the wall, the thickness is not less than 0.2m, the longitudinal slope is 0.5% -1%, and water accumulated in the soil layer is removed to the maximum extent. The concrete water-resisting layer 10 is internally provided with a longitudinal water tank 13 along the longitudinal direction, the depth and the width of the longitudinal water tank 13 are not less than 0.1m, the longitudinal gradient is consistent with that of the concrete water-resisting layer 10, and 4-5% of drainage gradient is arranged on the left side and the right side of the longitudinal water tank 13 to ensure that the longitudinal water tank 13 is positioned at the lowest transverse point.
The longitudinal water channels 13 are connected with the drainage channel 12 every 10-15m through transition water channels 14 arranged in the concrete water-resisting layer 10, included angles between the transition water channels 14 and the longitudinal water channels 13 and between the transition water channels 14 and the drainage channel 12 are not less than 45 degrees, and the transition water channels 14 are provided with 4-5% of slopes along the water flow direction.
And water permeable and sand-free concrete plates 16 are paved between the upper surface of the concrete water-resisting layer 10 and the backfill soil 4, between the backfill soil 4 and the wall body of the retaining wall 1 and between the backfill soil 4 and the wall rear slope excavation line 3, so that the water permeable area is increased, the drainage path is shortened, the soil quality is protected from loss, and accumulated water is effectively drained. The water permeable sand-free concrete slab 16 is a sand-free concrete slab in the prior art, and has a water permeable function. Concrete sealing layers 11 are arranged on the top of the permeable sand-free concrete plate 16 between the backfill soil 4 and the wall body of the retaining wall 1 and on the top of the permeable sand-free concrete plate 16 between the backfill soil 4 and the wall rear slope excavation line 3, the height of the concrete sealing layers is not less than 0.5m, and surface water is prevented from directly flowing into the wall rear soil layer.
In the existing drainage scheme, the drainage pipes 2 are generally arranged at intervals of 2m up and down, left and right, when accumulated water reaches the water inlet of the drainage pipe 2, the water can be drained, but the accumulated water between the two drainage pipes on the horizontal plane cannot be drained smoothly, mainly accumulates in the permeable layer 6 and finally permeates back into the backfill soil 4, so that the effect of a retaining wall drainage system is damaged; the utility model discloses a set up vertical basin 13, all collect ponding behind the wall in vertical basin 13, can realize collecting ponding and drainage function, in the soil layer seeped out ponding can not get back to the soil layer again, realized keeping apart the effect, compare in the point type drainage of current drainage scheme, the utility model discloses can understand to adopt line formula drainage scheme, drainage effect improves by a wide margin.
In the existing drainage scheme, a permeable layer 6 is arranged behind a wall, so that accumulated water on a contact surface is drained, but the contact surface is too small to effectively drain, only the accumulated water on a soil layer of the contact surface can be drained, the water content of the soil layer on the contact surface is reduced, the accumulated water in the surrounding soil is gradually permeated to the contact surface, and the drainage path is longer; the utility model discloses all set up the sand-free concrete slab that permeates water 16 in the three direction of backfill 4, greatly increased drainage, the area of permeating water, reduced drainage route.
In the existing drainage scheme, a water-resisting layer 5 is arranged behind a wall, the width of the water-resisting layer is about 0.5m in the transverse direction generally, the water level is difficult to reach the height of a water inlet of a drainage pipe 2 within a small width range to realize drainage, water is easy to permeate into surrounding soil, and a higher water level can be formed on the water-resisting layer 5 only when the water accumulated in a soil layer is too much and the surrounding soil is saturated, so that the drainage effect is not ideal; the utility model discloses set up the concrete water barrier 10 of broad, and set up vertical basin 13 in concrete water barrier 10, ponding can break away from the soil layer very smoothly.
In the existing drainage scheme, a water inlet is wrapped by a water-permeable geotextile in order to prevent soil particles and permeable layer particles from losing, the diameter of the water inlet is generally 10cm, the water permeable area is small, the geotextile is easily blocked by fine-grained soil, the water outlet cannot drain water, and a retaining wall drainage system fails; the utility model discloses do not use geotechnological cloth, do not exist by the condition of fine grained soil jam.
In the existing drainage scheme, the geotextile is easy to weather, loses the function of preventing soil particles and permeable layer particles from flowing out after being damaged, and the soil particles and the permeable layer particles flow out after the wall, so that the stability of a soil body after the wall is influenced, and the drainage pipe 2 is easy to block; in the existing drainage scheme, the drainage pipe 2 is generally made of a plastic PVC pipe, and the pipe and the geotextile are easy to age and damage, so that the drainage pipe 2 is blocked; the utility model discloses do not use PVC tubular product and geotechnological cloth, do not have the damaged jam condition of ageing.
In the existing drainage scheme, when accumulated water behind a wall flows out through the drainage pipe 2, soil is mixed, muddy water traces can be left on the wall body when the accumulated water flows out, and particularly the drainage pipe at a high position influences the attractiveness of the wall body; the utility model discloses not setting up the drain pipe of eminence, there is not the condition of muddy water pollution wall, the utility model discloses set up drainage channel 12, top and the backfill roof of a layer and escape canal parallel and level before the wall, the flowing water face is less than the backfill roof of a layer and the following 0.1m in escape canal before the wall, does not also have the condition that muddy water pollutes the wall.
A construction method of a retaining wall drainage system comprises the following steps:
1, excavating foundation pits of a main body, a front part and a rear part of a retaining wall 1;
step 2, installing a template, and placing a pre-buried pipe of the drainage channel 12 in the template, wherein the position is 10-15m away from the bottom layer, so that the construction influence is small; in the existing scheme, one drain pipe is arranged at an interval of 2m from top to bottom and from left to right, the drain pipe needs to be bound and reserved when the template is installed, the impact on the drain pipe needs to be avoided when concrete is poured, the vibrating effect can be influenced due to the drain pipes, the thickness of a retaining wall needs to be increased by the drain pipe, the longer drain pipe needs to be used for replacing the drain pipe reserved when the template is poured after the concrete is poured, and the process is complex;
step 4, backfilling concrete 15 and a front wall drainage ditch 9 before the construction of the wall, reserving a groove, completing the construction of the drainage channel 12 in the drainage ditch at the front part of the wall, and closing the joint of the groove at the front part of the wall and the drainage channel 12;
7, paving the permeable sand-free concrete plate 16, wherein the construction of the process is convenient, and the permeable sand-free concrete plate 16 can be directly paved on a plane, but the construction of the reverse filter layer is complex by the conventional scheme, firstly, the grading content of coarse particles and fine particles in the reverse filter layer needs to be allocated, backfilling is firstly constructed during construction, then the construction space of the reverse filter layer is excavated, and the construction of the reverse filter layer is completed, and the construction is more complex than that of the sand-free concrete plate in the utility model;
and 8, backfilling 4 and a concrete closed layer 11 behind the construction wall to finish the construction of the retaining wall and the drainage system.
In the operation stage, because the utility model can greatly improve the drainage effect, accumulated water behind the wall can be drained in time, the water and soil pressure behind the wall is effectively reduced, and the retaining wall has positive effect on the stability of the retaining wall during the operation period; meanwhile, the aging problem of the plastic drain pipe and the geotextile does not need to be considered, so that the operation and maintenance cost is reduced; the phenomenon that the wall is polluted by mud is avoided, and the retaining wall is more attractive and meets the requirement of environmental protection.
In the design stage, combine the utility model discloses a barricade drainage effect, further analysis behind the wall soil pressure of water, especially the barricade atress under the state of soaking can optimize the barricade cross-section when barricade structural design.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A retaining wall drainage system which is characterized in that: the water inlet is reserved on the side wall of the front wall drainage ditch close to the retaining wall, and is connected with the drainage channel;
a concrete water-resisting layer is arranged at the inlet of the drainage channel behind the retaining wall, a plurality of longitudinal water channels are arranged in the concrete water-resisting layer, drainage slopes are arranged on two sides of each longitudinal water channel, the longitudinal water channels correspond to the drainage channels one by one, and the longitudinal water channels are connected with the drainage channels through transition water channels arranged in the concrete water-resisting layer;
all laid the no sand concrete board that permeates water between the slope excavation line behind the backfill soil and the back fill between concrete water barrier upper surface and the backfill soil, between back fill and the barricade wall body and between back fill and the wall all be equipped with the concrete seal at the no sand concrete board top of permeating water between backfill soil and the barricade wall body and the no sand concrete board top of permeating water between back fill and the slope excavation line behind the wall.
2. The retaining wall drainage system according to claim 1, wherein: the drainage channel is circular, one drainage channel is reserved at intervals of 10-15m on the wall body of the retaining wall, the diameter of the drainage channel is 0.1m, and the drainage channel is provided with 4% -5% of slope from the rear part of the retaining wall to the front part of the wall.
3. The retaining wall drainage system according to claim 1 or 2, wherein: the transverse width of the concrete water-proof layer is not less than 0.2m from the retaining wall to the wall rear slope excavation line, and the longitudinal slope is 0.5% -1%.
4. The retaining wall drainage system according to claim 3, wherein: and two adjacent longitudinal water channels are arranged at an interval of 10m-15m, the depth and the width of each longitudinal water channel are not less than 0.1m, and the longitudinal gradient is consistent with that of the concrete waterproof layer.
5. The retaining wall drainage system according to claim 1, wherein: the included angle between the transition water tank and the longitudinal water tank and the included angle between the transition water tank and the drainage channel are not less than 45 degrees, and the transition water tank is provided with a gradient of 4% -5% along the water flowing direction.
6. The retaining wall drainage system according to claim 1, wherein: and a groove is arranged in the backfill concrete in front of the wall near the top, and the drainage channel is arranged in the groove and is opposite to a water inlet on the side wall of the drainage channel in front of the wall.
7. The retaining wall drainage system according to claim 1, wherein: the intersection angle of the front drainage ditch of the wall and the drainage channel is 90 degrees.
8. The retaining wall drainage system according to claim 1, wherein: the height of the concrete sealing layer is not less than 0.5m.
9. The retaining wall drainage system according to claim 1, wherein: the left side and the right side of the longitudinal water tank are provided with 4% -5% of drainage slopes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222037186.0U CN217998317U (en) | 2022-08-01 | 2022-08-01 | Barricade drainage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222037186.0U CN217998317U (en) | 2022-08-01 | 2022-08-01 | Barricade drainage system |
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| Publication Number | Publication Date |
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| CN217998317U true CN217998317U (en) | 2022-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202222037186.0U Active CN217998317U (en) | 2022-08-01 | 2022-08-01 | Barricade drainage system |
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| CN (1) | CN217998317U (en) |
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