Retaining wall drainage structure

Abstract

The utility model discloses a retaining wall drainage structure, including retaining wall and water collecting well, water collecting well sets up in retaining wall's back soil surface, retaining wall inside is provided with cavity, is provided with first drainage groove in the cavity bottom, is provided with with water collecting well intercommunication's main drain pipe in first drainage groove, and the back of retaining wall is provided with a plurality of with cavity intercommunication's diversion hole, is provided with filter mechanism in each diversion hole and is communicated with main drain pipe, the utility model discloses the advantage lies in, through the setting of filter structure, groundwater is handled, prevents main drain pipe and blocks, in addition, main drain pipe sets up in the cavity, effectively isolates external environment, is not easy to be hit and destroyed by foreign matter, and the probability that hidden space reduces the direct entry of sundries, and in the cavity personnel cleaning and overhauling work are convenient, and the drainage structure cleaning work load is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of retaining wall drainage technology, specifically a retaining wall drainage structure. Background Technology

[0002] A retaining wall is a structural engineering project used to support soil and prevent it from sliding or collapsing due to gravity. Drainage facilities for retaining walls refer to drainage measures designed to drain moisture from the soil behind the wall, prevent surface water infiltration, prevent water accumulation behind the wall from creating hydrostatic pressure, reduce frost heave pressure on backfill soil in cold regions, and eliminate expansion pressure on cohesive soil fill after immersion in water.

[0003] Existing retaining walls mostly adopt the design of open ditches, exposed pipes or direct drainage. Exposed drainage facilities are subject to long-term erosion by physical, chemical and biological factors, resulting in functional failure or structural damage, reducing the durability of the drainage structure. When water carries sand and gravel into the drainage channel, it is easy to deposit at the pipes or openings, resulting in reduced drainage efficiency or even complete blockage. Frequent manual cleaning is required, which is labor-intensive and has high maintenance costs. Utility Model Content

[0004] The technical problem to be solved by this utility model is how to reduce the workload and maintenance cost of cleaning drainage structures.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A retaining wall drainage structure includes a retaining wall and a sump, wherein the sump is disposed on the back side of the retaining wall.

[0007] The retaining wall has a cavity inside, and a first drainage trough is set at the bottom of the cavity. The first drainage trough is equipped with a main drainage pipe that is connected to a water collection well. The soil-facing side of the retaining wall is equipped with multiple guide holes that are connected to the cavity. Each guide hole is equipped with a filter mechanism and is connected to the main drainage pipe.

[0008] By setting up a filtration structure, groundwater is filtered to prevent blockage of the main drainage pipe. In addition, the main drainage pipe is located in a cavity, which effectively isolates it from the external environment and makes it less susceptible to damage from impacts. At the same time, the concealed space reduces the probability of debris entering directly, and the cavity facilitates cleaning and maintenance work, greatly reducing the workload of cleaning the drainage structure.

[0009] Preferably, the filtration mechanism includes a filter cylinder, a filter screen, a coarse filter layer, a medium filter layer, and a fine filter layer. The filter cylinder is fixed to the guide hole and closely attached to the inner wall of the guide hole. The filter cylinder is provided with the filter screen, coarse filter layer, medium filter layer, and fine filter layer in sequence from the soil-facing side of the retaining wall to the cavity direction. The filter cylinder is connected to the main drainage pipe.

[0010] Preferably, the filter cartridge is connected to the main drain pipe via a corrugated pipe.

[0011] Preferably, the coarse filter layer is a crushed stone or gravel layer with a thickness of 6-8 cm.

[0012] Preferably, the middle filter layer is a fine sand layer or a manufactured sand layer with a thickness of 4-6 cm.

[0013] Preferably, the fine filter layer is a non-woven fabric or a geogrid.

[0014] Preferably, a second drainage ditch is provided on the top of the retaining wall, the second drainage ditch is connected to the main drainage pipe, and a grating is provided on the second drainage ditch.

[0015] Preferably, the soil-facing side of the retaining wall is coated with a waterproof coating.

[0016] Preferably, a water pump is installed inside the water collection well.

[0017] Preferably, an overflow pipe is provided at the top of the water collection well, and a check valve is installed on the overflow pipe.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] By setting up a filtration structure, groundwater is filtered to prevent blockage of the main drainage pipe. In addition, the main drainage pipe is located in a cavity, which effectively isolates it from the external environment and makes it less susceptible to damage from impacts. At the same time, the concealed space reduces the probability of debris entering directly, and the cavity facilitates cleaning and maintenance work, greatly reducing the workload of cleaning the drainage structure. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;

[0021] Figure 2 This is a schematic diagram of the filter mechanism in an embodiment of the present invention. Detailed Implementation

[0022] To facilitate understanding of the technical solution of this utility model by those skilled in the art, the technical solution of this utility model will now be further described in conjunction with the accompanying drawings.

[0023] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0024] In this application, unless otherwise expressly specified and limited, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise expressly and specifically limited.

[0025] See Figures 1 to 2 This embodiment discloses a retaining wall drainage structure, including a retaining wall 1 and a water collection well 2, wherein the water collection well 2 is located on the back soil surface of the retaining wall 1.

[0026] The retaining wall 1 is constructed using high-strength materials, such as reinforced concrete, lightweight concrete, or fiber-reinforced composite materials, to compensate for the reduced self-weight caused by the hollow structure. The material's own strength bears the tensile stress generated by the earth pressure. The soil-facing surface of the retaining wall 1 is coated with a waterproof coating or covered with waterproof membrane to prevent groundwater from seeping into the retaining wall 1. The retaining wall 1 has a cavity 101 inside, allowing personnel to enter the cavity 101 from both ends of the retaining wall 1. Reinforcing ribs are spaced out inside the cavity 101 to ensure the stability of the retaining wall 1.

[0027] A first drainage trough 102 is provided at the bottom of the cavity 101, and a main drainage pipe 3 connected to the water collection well 2 is provided in the first drainage trough 102. The first drainage trough 102 has a slope of 1%-3% to guide the water in the main drainage pipe 3 to flow to the water collection well 2. In this embodiment, the main drainage pipe 3 is made of PVC pipe.

[0028] The top of the retaining wall 1 is also provided with a second drainage ditch 103 for collecting water from the top of the wall. The second drainage ditch 103 is connected to the main drainage pipe 3 through a pipe. The second drainage ditch 103 is equipped with a grid with a mesh size of 2-3mm to prevent large particles of debris from entering the second drainage ditch 103.

[0029] The retaining wall 1 has multiple guide holes 104 on its soil-facing side that communicate with the cavity 101. Each guide hole 104 contains a filter mechanism 4, and the output end of the filter mechanism 4 is connected to the main drainage pipe 3. The filter mechanism 4 includes a filter cylinder 41, a filter screen 42, a coarse filter layer 43, a medium filter layer 44, and a fine filter layer 45. The filter cylinder 41 is fixed to the guide hole 104 and closely attached to the inner wall of the guide hole 104. The filter cylinder 41 is connected to the main drainage pipe 3 through a corrugated pipe 5. The filter cylinder 41 has the filter screen 42, coarse filter layer 43, medium filter layer 44, and fine filter layer 45 arranged sequentially from the soil-facing side of the retaining wall 1 towards the cavity 101. The filter screen 42 filters out larger impurities. The coarse filter layer 43 is a 6-8cm thick layer of crushed stone or gravel for coarse filtration. The medium filter layer 44 is a 4-6cm thick layer of fine sand or manufactured sand for intermediate filtration. The fine filter layer 45 is a non-woven fabric or geogrid for fine filtration. By setting up the filter cylinder 41, filter screen 42, coarse filter layer 43, medium filter layer 44 and fine filter layer 45, the groundwater is filtered in stages, taking into account both permeability and anti-clogging properties, to prevent the main drainage pipe 3 from becoming blocked.

[0030] The water collection well 2 is equipped with a water pump 6, which discharges the water collected in the water collection well 2 to the municipal pipe network or the surrounding green space.

[0031] The water collection well 2 is equipped with a water level sensor connected to a monitoring platform to monitor the water accumulation in the well. The water collection well 2 is also equipped with an overflow pipe 7, which is fitted with a check valve to prevent external water from flowing back into the earthen water collection well 2.

[0032] In this embodiment, the groundwater is filtered by the filter structure 4 to prevent the main drainage pipe 3 from becoming clogged. In addition, the main drainage pipe 3 is located in the cavity 101, which effectively isolates the external environment and makes it less likely to be damaged by external objects. At the same time, the concealed space reduces the probability of debris entering directly, and the cavity 101 facilitates cleaning and maintenance work, greatly reducing the workload of cleaning the drainage structure.

[0033] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0034] The above-described embodiments are merely examples of implementation methods of the utility model. The scope of protection of this utility model is not limited to the above-described embodiments. For those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and these all fall within the scope of protection of this utility model.

Claims

1. A retaining wall drainage structure, characterized in that: It includes retaining walls and sump pits, with the sump pits located on the back side of the retaining walls; The retaining wall has a cavity inside, and a first drainage trough is set at the bottom of the cavity. The first drainage trough is equipped with a main drainage pipe that is connected to a water collection well. The soil-facing side of the retaining wall is equipped with multiple guide holes that are connected to the cavity. Each guide hole is equipped with a filter mechanism and is connected to the main drainage pipe.

2. The retaining wall drainage structure according to claim 1, characterized in that: The filtration mechanism includes a filter cylinder, a filter screen, a coarse filter layer, a medium filter layer, and a fine filter layer. The filter cylinder is fixed to the guide hole and closely attached to the inner wall of the guide hole. The filter cylinder is arranged with the filter screen, coarse filter layer, medium filter layer, and fine filter layer in sequence from the soil-facing side of the retaining wall to the cavity direction. The filter cylinder is connected to the main drainage pipe.

3. A retaining wall drainage structure according to claim 2, characterized in that: The filter cartridge is connected to the main drain pipe via a corrugated pipe.

4. A retaining wall drainage structure according to claim 2, characterized in that: The coarse filter layer is a layer of crushed stone or gravel with a thickness of 6-8 cm.

5. A retaining wall drainage structure according to claim 2, characterized in that: The intermediate filter layer is a layer of fine sand or manufactured sand with a thickness of 4-6 cm.

6. A retaining wall drainage structure according to claim 2, characterized in that: The fine filter layer is made of non-woven fabric or geogrid.

7. A retaining wall drainage structure according to claim 1, characterized in that: A second drainage channel is also provided on the top of the retaining wall. The second drainage channel is connected to the main drainage pipe and is equipped with a grating.

8. A retaining wall drainage structure according to claim 1, characterized in that: The soil-facing side of the retaining wall is coated with a waterproof coating.

9. A retaining wall drainage structure according to claim 1, characterized in that: A water pump is installed inside the water collection well.

10. A retaining wall drainage structure according to claim 1, characterized in that: An overflow pipe is installed at the top of the water collection well, and a check valve is installed on the overflow pipe.

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