Impermeable and waterproof ground well pit of airport apron

Abstract

The utility model discloses an airport apron anti-seepage waterproof ground well pit, and relates to the technical field of ground well pits, the inner bottom of the ground well pit is provided with a gravel backfill layer, a concrete waterproof protection layer, a first composite waterproof coiled material and a reinforced concrete main body in sequence from bottom to top; a reinforced concrete body, a second composite waterproof roll and an extruded sheet protection layer are sequentially arranged on the inner side wall of the ground well pit from inside to outside, a water collecting pit is arranged at one corner of the bottom of the ground well pit, accumulated water at the bottom of the ground well pit flows into the water collecting pit, and a drainage mechanism is arranged in the water collecting pit. Internal and external bidirectional drainage is realized by adopting a double-gradient design, a leakage path is effectively blocked, the output end of the drainage pump drains accumulated water in the accumulated water pit through the drainage pipe, the drained accumulated water enters an airport apron drainage system, and the airport apron drainage system has the advantage of high drainage efficiency. Meanwhile, the overall anti-seepage performance can be remarkably improved, and the anti-seepage structure has the advantages of being high in anti-seepage performance and stable in structure and is suitable for occasions such as airport aprons needing high anti-seepage requirements.

Description

Technical Field

[0001] This utility model relates to the field of ground well pit technology, and in particular to a ground well pit for aprons that is waterproof and seepage-resistant. Background Technology

[0002] Traditional underground pits suffer from insufficient impermeability, low drainage efficiency, and susceptibility to backflow of external water, especially during the rainy season or in areas with high groundwater levels, which can easily lead to water accumulation and leakage, affecting the structural safety of the pit and the operation of surrounding facilities. Existing technologies suffer from drawbacks such as a single waterproofing layer, unreasonable slope design, and insufficient redundancy in the drainage system. Utility Model Content

[0003] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a waterproof apron pit with strong anti-seepage performance, high drainage efficiency and good structural stability.

[0004] The technical solution adopted to solve the above-mentioned technical problems is as follows: a sand and gravel backfill layer is set at the bottom of the pit; a concrete waterproof protective layer is set above the sand and gravel backfill layer at the bottom of the pit; a first composite waterproof membrane is set above the concrete waterproof protective layer at the bottom of the pit; an extruded polystyrene board protective layer is set on the inner wall of the pit; a second composite waterproof membrane is set on the inner wall of the pit inside the extruded polystyrene board protective layer; and a reinforced concrete main body is poured at the bottom and inner wall of the pit. The reinforced concrete main body of the wall is located inside the second composite waterproof membrane, and the reinforced concrete main body at the bottom of the pit is located above the first composite waterproof membrane. The bottom of the pit consists of, from bottom to top, a sand and gravel backfill layer, a concrete waterproof protective layer, the first composite waterproof membrane, and the reinforced concrete main body. The inner wall of the pit consists of, from inside to outside, a reinforced concrete main body, the second composite waterproof membrane, and an extruded polystyrene board protective layer. A sump pit is set at one corner of the bottom of the pit, and the water at the bottom of the pit flows into the sump pit. A drainage mechanism is set in the sump pit.

[0005] Furthermore, the thickness of the reinforced concrete main body is ≥40mm.

[0006] Furthermore, the thickness of the extruded polystyrene board protective layer is 50 mm.

[0007] Furthermore, the first composite waterproof membrane and the second composite waterproof membrane are respectively composed of a polyurethane layer and an SBS modified bitumen layer, with the polyurethane layer having a thickness of 4mm and the SBS modified bitumen layer having a thickness of 3mm.

[0008] Furthermore, the thickness of the concrete waterproof protective layer is 50mm.

[0009] Furthermore, the thickness of the sand and gravel backfill layer is 500mm, and a grounding copper rod is installed on the sand and gravel backfill layer.

[0010] Furthermore, the inner bottom surface of the well pit is sloped, and the height of one corner of the water accumulation pit at the bottom of the well pit is lower than the height of the other triangles at the bottom of the well pit, with a slope of 2%.

[0011] Furthermore, the top of the well opening is sloped around its perimeter, with the height of the center of the well opening being lower than the height of the surrounding area, and the slope is 2%.

[0012] Furthermore, the drainage mechanism is as follows: a drainage pump is installed in the sump, and the output end of the drainage pump discharges the water in the sump through a drainage pipe, and a check valve is installed on the drainage pipe.

[0013] Furthermore, a liquid level sensor is installed in the sump, and the liquid level sensor is electrically connected to the drainage pump via a controller.

[0014] The beneficial effects of this utility model are as follows: (1) The bottom of the pit of this utility model consists of a sand and gravel backfill layer, a concrete waterproof protective layer, a first composite waterproof membrane, and a reinforced concrete main body from bottom to top. The inner sidewall of the pit consists of a reinforced concrete main body, a second composite waterproof membrane, and an extruded polystyrene board protective layer from inside to outside, which can significantly improve the overall impermeability. This utility model has the advantages of strong impermeability and structural stability. This utility model is suitable for scenarios such as airport aprons that require high impermeability.

[0015] (2) The double slope design of this utility model realizes bidirectional drainage inside and outside, effectively blocking the leakage path. The output end of the drainage pump discharges the water in the sump through the drainage pipe. The discharged water enters the apron drainage system, which has the advantage of high drainage efficiency. Attached Figure Description

[0016] Figure 1 This is a top view of the waterproof and seepage-resistant well pit for the apron of this utility model.

[0017] Figure 2 yes Figure 1 Sectional view of AA.

[0018] Figure 3 yes Figure 1 BB section view.

[0019] Figure 4 yes Figure 1 CC section view.

[0020] Attached reference numerals: 1. Well pit; 2. Water sump; 3. Reinforced concrete main body; 4. Grounding copper rod; 5. Concrete waterproof protective layer; 6. First composite waterproof membrane; 7. Extruded polystyrene board protective layer; 8. Sand and gravel backfill layer; 9. Second composite waterproof membrane; 10. Drainage pipe; 11. Check valve; 12. Drainage pump; 13. Liquid level sensor. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0022] This embodiment of an anti-seepage and waterproof ground pit for an apron is composed of a ground pit 1, a water collection pit 2, a reinforced concrete main body 3, a grounding copper rod 4, a concrete waterproof protective layer 5, a first composite waterproof membrane 6, an extruded polystyrene board protective layer 7, a sand and gravel backfill layer 8, a second composite waterproof membrane 9, a drainage pipe 10, a check valve 11, a drainage pump 12, and a liquid level sensor 13.

[0023] like Figures 1 to 3 As shown, a sand and gravel backfill layer 8 with a thickness of 500mm is provided at the bottom inner side of the pit 1, and a grounding copper rod 4 is provided on the sand and gravel backfill layer 8. A concrete waterproof protective layer 5 with a thickness of 50mm is provided above the sand and gravel backfill layer 8 at the bottom inner side of the pit 1. A first composite waterproof membrane 6 with a thickness of 50mm is provided above the concrete waterproof protective layer 5 at the bottom inner side of the pit 1. An extruded polystyrene board protective layer 7 with a thickness of 50mm is provided on the inner side wall of the pit 1. A second composite waterproof membrane 9 with a thickness of 9 is provided inside the extruded polystyrene board protective layer 7 on the inner side wall of the pit 1. The first composite waterproof membrane 6 and the second composite waterproof membrane 9 are respectively composed of a polyurethane layer and an SBS modified bitumen layer, with the polyurethane layer having a thickness of 4mm and the SBS modified bitumen layer having a thickness of 3mm. A reinforced concrete main body 3 is poured at the bottom and on the inner wall of the pit 1. The reinforced concrete main body 3 on the inner wall of the pit 1 is located inside the second composite waterproof membrane 9, and the reinforced concrete main body 3 at the bottom of the pit 1 is located above the first composite waterproof membrane 6. The thickness of the reinforced concrete main body 3 is ≥40mm, the impermeability grade of the reinforced concrete main body 3 is P8, and the concrete grade is C35.

[0024] The bottom of the pit 1 consists of, from bottom to top, a sand and gravel backfill layer 8, a concrete waterproof protective layer 5, a first composite waterproof membrane 6, and a reinforced concrete main body 3. The inner sidewall of the pit 1 consists of, from inside to outside, a reinforced concrete main body 3, a second composite waterproof membrane 9, and an extruded polystyrene board protective layer 7.

[0025] The inner bottom surface of the pit 1 is sloped, and the height of one corner of the water accumulation pit 2 at the bottom of the pit 1 is lower than the height of the other triangles at the bottom of the pit 1, with a slope of 2%, forming a drainage path of "low at one corner and high at the other triangles". The top opening of the pit 1 is also sloped, with the height in the middle of the opening lower than the height of the surrounding area, with a slope of 2%, forming a structure of "high in the middle and low around the edges". Combined with the sealed manhole cover, this prevents external water from flowing into the pit 1.

[0026] A water collection pit 2 is set at one corner of the bottom of the pit 1. The water collected at the bottom of the pit flows into the water collection pit 2, and a drainage mechanism is set in the water collection pit 2.

[0027] like Figure 4 As shown, the drainage mechanism is as follows: a drainage pump 12 is installed in the sump 2. The output end of the drainage pump 12 discharges the water in the sump 2 through the drainage pipe 10. The discharged water enters the apron drainage system. A check valve 11 is installed on the drainage pipe 10 to prevent water backflow. A liquid level sensor 13 is installed in the sump 2. The liquid level sensor 13 is electrically connected to the drainage pump 12 through a controller.

[0028] The construction steps of this embodiment are as follows: (1) During construction, a sand and gravel backfill layer 8 is filled at the bottom of the pit 1 with a compaction coefficient of ≥0.96 to prevent the foundation from sinking.

[0029] (2) Lay a concrete waterproof protective layer 5 on the sand and gravel backfill layer 8 at the bottom of the pit 1, and lay a first composite waterproof membrane 6 on top of the concrete waterproof protective layer 5.

[0030] (3) Lay an extruded polystyrene board protective layer 7 on the inner wall of the pit 1, and lay a second composite waterproof membrane 9 on the inner side of the extruded polystyrene board protective layer 7.

[0031] (4) A reinforced concrete main body 3 is poured at the bottom and inner wall of the pit 1. The bottom of the pit 1 consists of a sand and gravel backfill layer 8, a concrete waterproof protective layer 5, a first composite waterproof membrane 6, and a reinforced concrete main body 3 from bottom to top. The inner wall of the pit 1 consists of a reinforced concrete main body 3, a second composite waterproof membrane 9, and an extruded polystyrene board protective layer 7 from inside to outside.

[0032] (5) Install the drainage mechanism, debug it, backfill the soil around the well and compact it.

[0033] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model.

Claims

1. A permeation resistant, waterproof ground pit for a ramp, characterized by: The sand and gravel backfill layer (8) is arranged on the inner bottom of the ground well pit (1), the concrete waterproof protection layer (5) is arranged above the sand and gravel backfill layer (8) on the inner bottom of the ground well pit (1), the first composite waterproof coiled material (6) is arranged above the concrete waterproof protection layer (5) on the inner bottom of the ground well pit (1), the extruded plate protection layer (7) is arranged on the inner side wall of the ground well pit (1), the second composite waterproof coiled material (9) is arranged inside the extruded plate protection layer (7) on the inner side wall of the ground well pit (1), the reinforced concrete main body (3) is poured on the bottom and the inner side wall of the ground well pit (1), the reinforced concrete main body (3) on the inner side wall of the ground well pit (1) is inside the second composite waterproof coiled material (9), the reinforced concrete main body (3) on the bottom of the ground well pit (1) is above the first composite waterproof coiled material (6), the inner bottom of the ground well pit (1) is sequentially provided with the sand and gravel backfill layer (8), the concrete waterproof protection layer (5), the first composite waterproof coiled material (6) and the reinforced concrete main body (3) from bottom to top, the inner side wall of the ground well pit (1) is sequentially provided with the reinforced concrete main body (3), the second composite waterproof coiled material (9) and the extruded plate protection layer (7) from inside to outside, the water collecting pit (2) is arranged at a corner of the bottom of the ground well pit (1), the water on the bottom of the ground well pit flows into the water collecting pit (2), and the drainage mechanism is arranged in the water collecting pit (2).

2. The impervious and waterproof apron pit according to claim 1, characterized in that: The thickness of the reinforced concrete main body (3) is greater than or equal to 40 mm.

3. The impervious and waterproof apron pit according to claim 1, characterized in that: The thickness of the extruded plate protection layer (7) is 50 mm.

4. The impervious, waterproof, subterranean pit for a yard according to claim 1, characterized in that: The first composite waterproof coiled material (6) and the second composite waterproof coiled material (9) are respectively composed of a polyurethane layer and an SBS modified asphalt layer, the thickness of the polyurethane layer is 4 mm, and the thickness of the SBS modified asphalt layer is 3 mm.

5. The impervious, waterproof, subterranean pit for a yard according to claim 1, characterized in that: The thickness of the concrete waterproof protection layer (5) is 50 mm.

6. The impervious, waterproof, subterranean pit for a yard according to claim 1, characterized in that: The thickness of the sand and gravel backfill layer (8) is 500 mm, and the ground copper bar (4) is arranged on the sand and gravel backfill layer (8).

7. The impervious, waterproof, subterranean pit for a yard according to claim 1, characterized in that: The inner bottom surface of the ground well pit (1) is provided with a slope, the height of a corner of the water collecting pit (2) on the bottom of the ground well pit (1) is lower than the height of other three corners of the bottom of the ground well pit (1), and the slope is 2%.

8. The impervious, waterproof, subterranean pit for a yard according to claim 1, characterized in that: The top of the ground well pit (1) is provided with a slope around the well mouth, the height of the middle of the well mouth is lower than the height of the periphery of the well mouth, and the slope is 2%.

9. The impervious, waterproof, subterranean pit for a yard according to claim 1, characterized in that, The drainage mechanism is that the water collecting pit (2) is provided with a drainage pump (12), the output end of the drainage pump (12) is connected with the water collecting pit (2) through a drainage pipe (10) to drain the water in the water collecting pit (2), and a check valve (11) is arranged on the drainage pipe (10).

10. The impervious, waterproof, subterranean pit for a landing according to claim 9, characterized in that: The water collecting pit (2) is provided with a liquid level sensor (13), and the liquid level sensor (13) is electrically connected with the drainage pump (12) through a controller.

Images