Composite drainage ditch in airport soil surface area

Abstract

The utility model provides an airport soil surface area composite drainage ditch which comprises a first ditch body, the first ditch body is provided with a first ditch bottom and a first ditch wall, and the first ditch wall has a first gradient; a second trench body is formed in the range of the first trench bottom, the second trench body is provided with a second trench bottom and a second trench wall, the second trench bottom is located at the position lower than the first trench bottom, the top end of the second trench wall is provided with a connecting part, and the second trench wall extends to the second trench bottom from the connecting part; the inner side of the second trench wall has a second gradient greater than the first gradient; wherein the connecting part and the first trench bottom are of an integrated structure. By the adoption of the airport soil surface area composite drainage ditch, the technical problem that in the prior art, an airport soil surface area drainage ditch is large in occupied area in order to meet the requirements for convenient disassembly and water displacement can be solved.

Description

Technical Field

[0001] The utility model relates to the field of airport engineering, in particular to a composite drainage ditch in an airport soil surface area. Background Art

[0002] With the expansion of major domestic hub airports, the original airport rainwater drainage system also needs to be expanded. With the increase of catchment area and total length of drainage ditch, the ditch depth exceeds 5 meters and the ditch width exceeds 8 meters in the downstream of the main ditch near the drainage outlet. At the same time, the expansion of hub airports usually takes several phases to complete. The earth surface area passed by the main ditch in this phase may be converted into an apron or terminal building (finger pier, satellite hall, etc.) in the next phase. Therefore, the main ditch of the drainage ditch in the earth surface area here will also face demolition and reconstruction in the next phase.

[0003] In the existing technology, it is difficult to dismantle the U-shaped open ditch made of reinforced concrete, and it is impossible to combine permanent and temporary construction. The ditch depth of the rectangular open drainage ditch made of mortar-laid stone is generally required to be no more than 5 meters. If it exceeds 5 meters, the structure is not stable enough, and the wall thickness is too thick, making it difficult to dismantle. The trapezoidal open drainage ditch made of mortar-laid stone is easy to dismantle, but when the ditch depth exceeds 3 meters, multiple slopes must be used, which occupies too much soil surface area. Utility Model Content

[0004] The utility model aims to provide a composite drainage ditch in an airport soil surface area, which solves the technical problem that the drainage ditch in the airport soil surface area in the prior art occupies a large area in order to meet the requirements of convenient dismantling and drainage volume.

[0005] To achieve the above-mentioned purpose, the utility model provides a composite drainage ditch in an airport soil surface area, comprising a first ditch body, the first ditch body having a first ditch bottom and a first ditch wall, the first ditch wall having a first slope; a second ditch body is opened within the range of the first ditch bottom, the second ditch body having a second ditch bottom and a second ditch wall, the second ditch bottom is located at a position lower than the first ditch bottom, the top of the second ditch wall has a connecting portion, the second ditch wall extends from the connecting portion to the second ditch bottom, and the inner side of the second ditch wall has a second slope greater than the first slope; wherein the connecting portion and the first ditch bottom are an integral structure.

[0006] Compared with the prior art, the beneficial effects of the present invention are:

[0007] The composite drainage ditch in the earth surface area of ​​an airport of the utility model has a second ditch body opened within the range of the first ditch bottom, so that the second ditch wall extends downward to the depth of the second ditch bottom. The capacity of the drainage ditch can be increased by simply increasing the depth of the second ditch wall extension, thereby ensuring the convenience of dismantling the first ditch body and meeting greater drainage needs, avoiding the need to set multiple slopes on the first ditch wall to increase drainage volume, and saving space occupied in the earth surface area.

[0008] Preferably, the top surface of the connecting portion is flush with the inner side of the first groove bottom.

[0009] Preferably, a cushion layer is provided outside the first groove body.

[0010] Preferably, a filter layer is provided between the first ditch body and the cushion layer.

[0011] Preferably, the width of the outer side of the second groove wall gradually increases from the top end of the second groove wall to the bottom end of the second groove wall.

[0012] Preferably, an isolation layer is provided on the inner side of the second groove bottom.

[0013] Preferably, a first drainage channel is provided in the first ditch wall, and the first drainage channel passes through the inner side and the outer side of the first ditch wall to form a first water outlet hole and a first water inlet hole respectively.

[0014] Preferably, a second drainage channel is provided in the second ditch wall, and the second drainage channel passes through the inner side and the outer side of the second ditch wall to form a second water outlet hole and a second water inlet hole respectively.

[0015] Preferably, a reverse filter bag is provided outside the second water inlet hole. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present utility model, the following is a brief introduction to the drawings required for use in the embodiments. Obviously, the drawings described below are some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 The utility model is a schematic diagram of the composite drainage ditch structure in the airport soil surface area.

[0018] In the figure: a first ditch body 1, a first ditch bottom 11, a first ditch wall 12, a first drainage channel 121, a first water outlet hole 122, a first water inlet hole 123, a second ditch body 2, a second ditch bottom 21, an isolation layer 211, a second ditch wall 22, a connecting portion 221, a second drainage channel 222, a second water outlet hole 223, a second water inlet hole 224, a filter bag 225, a cushion layer 3, and a filter layer 4. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] Figure 1 This is a schematic diagram of the composite drainage ditch structure in the airport soil surface area provided by the utility model. Figure 1 As shown, the present embodiment discloses a composite drainage ditch in an airport soil surface area, comprising a first ditch body 1, the first ditch body 1 having a first ditch bottom 11 and a first ditch wall 12, the first ditch wall 12 having a first slope; a second ditch body 2 is opened within the range of the first ditch bottom 11, the second ditch body 2 having a second ditch bottom 21 and a second ditch wall 22, the second ditch bottom 21 is located at a position lower than the first ditch bottom 11, the top of the second ditch wall 22 has a connecting portion 221, the second ditch wall 22 extends from the connecting portion 221 to the second ditch bottom 21, and the inner side of the second ditch wall 22 has a second slope greater than the first slope; wherein the connecting portion 221 and the first ditch bottom 11 are an integral structure.

[0021] The first ditch body 1 and the second ditch body 2 are grouted with cement mortar on the inside, and the top surface is plastered with cement mortar. In a specific embodiment, the first ditch body 1 is set as a trapezoidal ditch structure for easy removal; the first ditch body 1 and the second ditch body 2 are both mortar-laid stone ditch bodies, and the top surface of the connecting part 221 is flush with the inner side of the first ditch bottom 11. In addition, the second ditch body 2 can be set as a whole at a depth lower than the structural demolition depth required for the airport reconstruction, and it can adopt a rectangular, U-shaped, etc. ditch structure.

[0022] In this embodiment, the first slope is 1:1, and the second slope is 1:0.05; in other feasible embodiments, the slope is not limited to the specific value of this embodiment, and can be adjusted accordingly according to actual needs.

[0023] By opening a second ditch body within the range of the first ditch bottom, the second ditch wall is extended downward to the depth of the second ditch bottom. The capacity of the drainage ditch can be increased by simply increasing the depth of the second ditch wall. While ensuring the convenience of dismantling the first ditch body, greater drainage needs can be met, avoiding the need to set multiple slopes on the first ditch wall to increase drainage volume, and saving space occupied by the soil surface area.

[0024] Specifically, a cushion layer 3 is provided outside the first ditch body 1, and the cushion layer 3 can be made of permeable materials such as crushed stone; more specifically, a filter layer 4 is provided between the first ditch body 1 and the cushion layer 3, and the filter layer 4 can be made of materials such as geotextile.

[0025] In some preferred embodiments, in order to improve the earth pressure bearing capacity of the second side wall, the width of the outer side of the second trench wall 22 gradually increases from the top end of the second trench wall 22 to the bottom end of the second trench wall 22 .

[0026] In some preferred embodiments, an isolation layer 211 is provided inside the second trench bottom 21 to facilitate the movement of water flow and isolate water from direct contact with the trench bottom masonry.

[0027] Specifically, a first drainage channel 121 is provided in the first ditch wall 12, and the first drainage channel 121 passes through the inner side and the outer side of the first ditch wall 12, respectively forming a first water outlet 122 and a first water inlet 123, so as to collect water outside the first ditch body. The first drainage channel 121 can adopt common pipe fittings in the prior art such as PV pipes. In some preferred embodiments, an anti-filter bag (not shown in the figure) is provided outside the first water inlet 123, so that water outside the first ditch body can enter the first ditch body through the first drainage channel, and at the same time, sand and gravel can be prevented from entering the drainage ditch through the first water drainage channel.

[0028] Specifically, a second drainage channel 222 is provided in the second ditch wall 22, and the second drainage channel 222 passes through the inner side and the outer side of the second ditch wall 22, respectively forming a second water outlet 223 and a second water inlet 224. The second drainage channel 222 can use a PV pipe or other common pipe fittings in the prior art. In some preferred embodiments, an anti-filter bag 225 is provided outside the second water inlet 224, so that water outside the second ditch body enters the second ditch body through the second drainage channel, and at the same time, sand and gravel are prevented from entering the drainage ditch through the second drainage channel.

[0029] The above description of various embodiments of the present invention is provided to those skilled in the art for the purpose of description. It is not intended to be exhaustive or to limit the present invention to a single disclosed embodiment. As above, various substitutions and variations of the present invention will be apparent to those skilled in the art to which the above-mentioned technology belongs. Therefore, although some alternative embodiments have been specifically discussed, other embodiments will be apparent, or relatively easy for those skilled in the art to derive. The present invention is intended to include all substitutions, modifications and variations of the present invention discussed herein, as well as other embodiments falling within the spirit and scope of the above-mentioned application.

[0030] Although the present invention has been described through embodiments, those skilled in the art will appreciate that there are many modifications and changes to the present invention without departing from the spirit of the present invention. It is intended that the appended claims include these modifications and changes without departing from the spirit of the present invention.

Claims

1. A composite drainage ditch in an airport soil surface area, comprising a first ditch body, wherein the first ditch body has a first ditch bottom and a first ditch wall, and the first ditch wall has a first slope; characterized in that: A second groove body is opened within the range of the first groove bottom, the second groove body has a second groove bottom and a second groove wall, the second groove bottom is located at a position lower than the first groove bottom, the top of the second groove wall has a connecting portion, the second groove wall extends from the connecting portion to the second groove bottom, and the inner side of the second groove wall has a second slope greater than the first slope; wherein the connecting portion and the first groove bottom are an integral structure.

2. The airport soil surface composite drainage ditch according to claim 1 is characterized in that: The top surface of the connecting portion is flush with the inner side of the first groove bottom.

3. The airport soil surface composite drainage ditch according to claim 1 is characterized in that: A cushion layer is disposed outside the first trench body.

4. The airport soil surface area composite drainage ditch according to claim 3 is characterized in that: An anti-filter layer is provided between the first ditch body and the cushion layer.

5. The airport soil surface composite drainage ditch according to claim 1 is characterized in that: The width of the outer side of the second groove wall gradually increases from the top end of the second groove wall to the bottom end of the second groove wall.

6. The airport soil surface composite drainage ditch according to claim 1 is characterized in that: An isolation layer is provided inside the second groove bottom.

7. The airport soil surface composite drainage ditch according to claim 1 is characterized in that: A first drainage channel is provided in the first ditch wall, and the first drainage channel passes through the inner side and the outer side of the first ditch wall to form a first water outlet hole and a first water inlet hole respectively.

8. The airport soil surface composite drainage ditch according to claim 1 is characterized in that: A second drainage channel is provided in the second ditch wall. The second drainage channel passes through the inner side and the outer side of the second ditch wall to form a second water outlet hole and a second water inlet hole respectively.

9. The airport soil surface composite drainage ditch according to claim 8, characterized in that: A reverse filter bag is arranged outside the second water inlet hole.

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