Culvert exit retaining wall

Abstract

The present application discloses a culvert outlet retaining wall, comprising: a retaining wall leaning against the culvert outlet to resist the impact of water during construction, the bottom of the retaining wall being in the ground, and the retaining wall having inclined drainage holes; a slag filling layer on the ground, the retaining wall leaning against the inner side of the slag filling layer; the retaining wall leaning against the inner side has an inclined anti-filter layer. When rainwater on the top of the slag filling layer or internal infiltration water infiltrates, it is first filtered through the anti-filter layer and then quickly drained from the inner inclined surface of the retaining wall to the drainage hole for discharge, which is conducive to the drainage and discharge of the infiltration water from the retaining wall, and solves the problem that the main wall surface is inclined toward the retained soil body, which is not conducive to the drainage of the infiltration water from the main wall surface to the water guide pipe for discharge.

Description

Technical Field

[0001] The utility model relates to a culvert outlet retaining wall and belongs to the technical field of construction. Background Art

[0002] Due to the large impact force of water flow at the culvert outlet, for dams with backfill debris, retaining walls need to be built to resist the impact of water flow at the culvert outlet and ensure that the backfill debris is effectively protected by the retaining wall.

[0003] The existing retaining wall construction structure is shown in Chinese Patent Publication No. CN110397050B. Although a water pipe is provided on the main wall surface protecting the retained body to relieve the seepage water pressure, the main wall surface is inclined outward toward the retained body, which is not conducive to the seepage water being drained from the main wall surface into the water pipe for discharge. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a culvert outlet retaining wall.

[0005] The utility model is realized through the following technical solutions.

[0006] The utility model provides a culvert exit retaining wall, comprising:

[0007] During construction, the retaining wall is close to the culvert outlet to resist the impact of water. The bottom of the retaining wall is in the ground and the retaining wall has inclined drainage holes;

[0008] In the slag filling layer on the ground, the retaining wall is inclined toward the slag filling layer;

[0009] The inner inclined retaining wall has an inclined filter layer.

[0010] A drainage ditch is arranged on the top of the slag filling layer.

[0011] The inclination ratio of the filter layer is 1:0.5.

[0012] The top and bottom of the filter layer are flush with the retaining wall.

[0013] The bottom of the retaining wall is inclined downward in the ground, and the downward slope of the bottom of the retaining wall is 0.5%.

[0014] The drainage ditch is provided with a water outlet, in which a perforated pipe is pre-buried, the top of the perforated pipe is located at the water outlet of the drainage ditch and is blocked, and the bottom of the perforated pipe is tilted downward to be connected with the drainage hole.

[0015] The slag filling layer on the higher side of the drainage ditch has grid beams and grass-planted slope protection.

[0016] The beneficial effect of the utility model is that when rainwater on the top of the slag filling layer or internal infiltration water penetrates, it is first filtered through the anti-filtration layer and then quickly drained from the inclined surface inside the retaining wall to the drainage hole for discharge, which is conducive to the drainage and discharge of the infiltrated water from the retaining wall, and solves the problem that the main wall surface is inclined outwardly toward the retained earth body, which is not conducive to the drainage of the infiltrated water from the main wall surface to the water guide pipe for discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the structure distribution of the utility model;

[0018] In the figure: 1-slag filling layer; 11-drainage ditch; 12-grid beam grass planting slope protection; 2-retaining wall; 21-drainage hole; 22-perforated pipe; 3-filter layer; 4-ground. DETAILED DESCRIPTION

[0019] The technical solution of the utility model is further described below, but the scope of protection required is not limited to the description.

[0020] like Figure 1 shown.

[0021] A culvert exit retaining wall of the present application comprises:

[0022] A slag filling layer 1 with a drainage ditch 11 on the top is formed by backfilling slag soil and compacting it on the ground 4. A retaining wall 2 formed by pouring and curing concrete is provided on the slag filling layer 1 close to the culvert outlet. The retaining wall 2 has drainage holes 21, and the retaining wall 2 close to the slag filling layer 1 is inclined toward the inside of the slag filling layer 1.

[0023] The inner inclined retaining wall 2 has an inverted filter layer 3 constructed in an inclined manner, and the inclination ratio of the inverted filter layer 3 is 1:0.5; the top and bottom of the inverted filter layer 3 are flush with the retaining wall 2.

[0024] The bottom of the retaining wall 2 is inclined downward in the ground 4, and the downward slope of the bottom of the retaining wall 2 is 0.5%.

[0025] The drainage ditch 11 has a water outlet, in which a perforated pipe 22 is pre-buried, the top of the perforated pipe 22 is at the water outlet of the drainage ditch 11 and is blocked by a plug, and the bottom of the perforated pipe 22 is tilted downward to connect with the drainage hole 21; a large water flow in the drainage ditch 11 passes through the perforated pipe 22 into the drainage hole 21 to impact the accumulated silt, so as to flush the drainage hole 21; under normal circumstances, the top of the perforated pipe 22 at the water outlet of the drainage ditch 11 is blocked and sealed by a plug.

[0026] When rainwater on the top of the slag filling layer 1 or internal infiltration water penetrates, it is first filtered through the filter layer 3 and then quickly drained from the inclined surface inside the retaining wall 2 to the drainage hole 21 for discharge, which is conducive to the drainage of infiltration water from the retaining wall 2, solving the problem that the main wall surface is inclined outward toward the retained soil body, which is not conducive to the drainage of infiltration water from the main wall surface to the water guide pipe for discharge.

[0027] The slag filling layer 1 on the higher side of the drainage ditch 11 has a grid beam grass-planted slope protection 12.

Claims

1. A culvert exit retaining wall, characterized in that: During construction, a retaining wall (2) is placed towards the culvert outlet to resist the impact of water, the bottom of the retaining wall (2) is located in the ground (4), and the retaining wall (2) has an inclined drainage hole (21); A slag filling layer (1) on the ground (4), and a retaining wall (2) inclined toward the slag filling layer (1); The inner inclined retaining wall (2) is provided with an inclined filter layer (3).

2. The culvert exit retaining wall according to claim 1, characterized in that: A drainage ditch (11) is provided on the top of the slag filling layer (1).

3. The culvert outlet retaining wall according to claim 1, characterized in that: The inclination ratio of the filter layer (3) is 1:0.

5.

4. The culvert outlet retaining wall according to claim 1, characterized in that: The top and bottom of the filter layer (3) are flush with the retaining wall (2).

5. The culvert outlet retaining wall according to claim 1, characterized in that: The bottom of the retaining wall (2) is inclined downward in the ground (4), and the downward inclination slope of the bottom of the retaining wall (2) is 0.5%.

6. The culvert outlet retaining wall according to claim 2, characterized in that: The drainage ditch (11) is provided with a water outlet, in which a perforated pipe (22) is pre-buried, the top of the perforated pipe (22) is located at the water outlet of the drainage ditch (11) and is blocked, and the bottom of the perforated pipe (22) is tilted downward and connected to the drainage hole (21).

7. The culvert outlet retaining wall according to claim 1, characterized in that: The slag filling layer (1) on the higher side of the drainage ditch (11) has a grid beam grass-planted slope protection (12).

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