Road structure for sewage treatment plant

Abstract

The sewage treatment plant settlement-reducing road structure belongs to the technical field of building and mainly comprises, from bottom to top, a gravel sand layer, a sludge solidified soil layer, a first filling layer, a cushion layer, a two-way geotextile, a second filling layer, a semi-rigid base and a pavement; a plurality of groups of lower gravel piers and upper gravel piers are arranged in the gravel sand layer, the sludge solidified soil layer and the first filling layer, each group comprising one lower gravel pier and one upper gravel pier, the lower gravel pier and the upper gravel pier are vertically arranged and the lower gravel pier is below the upper gravel pier; the plurality of groups of lower gravel piers and upper gravel piers are uniformly distributed. The sewage treatment plant settlement-reducing road structure effectively controls and reduces the occurrence of settlement through the arrangement of the lower gravel piers, the upper gravel piers and the reinforced concrete structure in the grouting hole, improves the bearing capacity for road load, improves the stability of the road structure and realizes stable support of the road structure.

Description

Technical Field

[0001] This utility model belongs to the field of building technology, specifically relating to a sediment reduction road structure for sewage treatment plants. Background Technology

[0002] Currently, during the construction of the sewage treatment plant, there has been insufficient anti-settlement design for the roads, which may lead to localized road subsidence. This could result in the foundation of the sewage treatment ponds settling after the completion and commissioning of the plant. Utility Model Content

[0003] To address the potential settlement issues that may arise during the construction of wastewater treatment plants, this invention provides a settlement-reducing road structure for wastewater treatment plants. This settlement-reducing road structure can effectively control and reduce settlement, thus stabilizing the road structure.

[0004] The technical solution adopted by this utility model to solve the technical problem is as follows:

[0005] This utility model provides a sediment reduction road structure for a sewage treatment plant, mainly comprising: a gravel and sand layer, a silt-stabilized soil layer, a first filling layer, a cushion layer, a woven bidirectional geotextile, a second filling layer, a semi-rigid base layer, and a road surface, arranged sequentially from bottom to top; multiple sets of lower and upper gravel blocks are provided in the gravel and sand layer, the silt-stabilized soil layer, and the first filling layer, each set including one lower gravel block and one upper gravel block, the lower gravel block and the upper gravel block are arranged vertically and the lower gravel block is located below the upper gravel block; the multiple sets of lower and upper gravel blocks are evenly distributed; wherein, the gravel particle size used to make the lower gravel block is larger than the gravel particle size used to make the upper gravel block.

[0006] Furthermore, the upper end of the lower crushed stone pier is located in the silt-stabilized soil layer, and its lower end is inserted into the crushed stone and gravel layer; the upper end of the upper crushed stone pier is inserted into the first filling layer, and its upper end is in contact with the lower surface of the cushion layer; the lower end of the upper crushed stone pier is located in the silt-stabilized soil layer, and its lower end is in contact with the upper end of the lower crushed stone pier.

[0007] Furthermore, the lower and upper crushed stone blocks have the same diameter.

[0008] Furthermore, the lower end of the lower crushed stone block is inserted into the crushed stone and gravel layer 1 at a depth of 0.1-0.3m.

[0009] Furthermore, in the multiple sets of lower and upper crushed stone blocks, the spacing between adjacent sets is 1-2m.

[0010] Furthermore, the lower crushed stone block is made of crushed stone with a particle size of 15-20mm; the upper crushed stone block is made of crushed stone with a particle size of 5-10mm.

[0011] Furthermore, it also includes multiple grouting holes, which are evenly distributed among multiple sets of lower and upper crushed stone piers; each grouting hole is equipped with a reinforced concrete structure; the upper end of the reinforced concrete structure is connected to the lower end of the cushion layer, and its lower end is inserted into the crushed stone and gravel layer to a depth of 0.1-0.3m; the reinforced concrete structure penetrates the first filling layer and the silt-stabilized soil layer.

[0012] Furthermore, the diameters of the reinforced concrete structure, the lower crushed stone pier, and the upper crushed stone pier are the same.

[0013] Furthermore, instead of setting lower and upper crushed stone piers, multiple evenly distributed grouting holes are directly set; each grouting hole contains a reinforced concrete structure; the upper end of the reinforced concrete structure is connected to the lower end of the cushion layer, and its lower end is inserted into the crushed stone and gravel layer to a depth of 0.1-0.3m; the reinforced concrete structure penetrates the first filling layer and the silt-stabilized soil layer.

[0014] Furthermore, the spacing between two adjacent grouting holes is 1-2m.

[0015] The beneficial effects of this utility model are:

[0016] This utility model provides a settlement-reducing road structure for wastewater treatment plants. Through lower and upper crushed stone piers and reinforced concrete structures within grouting holes, it effectively controls and reduces settlement, improving the road's load-bearing capacity, enhancing stability, and achieving robust support. This wastewater treatment plant settlement-reducing road structure is primarily applicable to wastewater treatment plant areas, especially during the construction of treatment ponds. Furthermore, this wastewater treatment plant settlement-reducing road structure can also be applied to other non-wastewater treatment plant areas to provide anti-settlement functionality. Attached Figure Description

[0017] Figure 1 This utility model provides a schematic diagram of a sediment reduction road structure for a sewage treatment plant.

[0018] Figure 2 for Figure 1 A magnified view of the area circled in the middle.

[0019] Figure 3 This is a schematic diagram showing the distribution of grouting holes and upper crushed stone blocks.

[0020] Figure 4 This is a schematic diagram of constructing a treatment pool directly on a woven biaxial geotextile.

[0021] In the diagram, 1. Gravel layer, 2. Lower gravel block, 3. Upper gravel block, 4. Silt-stabilized soil layer, 5. First filling layer, 6. Subbase layer, 7. Woven bidirectional geotextile, 8. Second filling layer, 9. Semi-rigid base layer, 10. Road surface, 11. Grouting hole, 12. Hole. Detailed Implementation

[0022] The present invention will be further described in detail below with reference to the accompanying drawings.

[0023] like Figures 1 to 3 As shown, the present invention provides a sediment reduction road structure for a sewage treatment plant, which mainly includes:

[0024] 1. Crushed gravel and sand layer, 2. Lower crushed stone block, 3. Upper crushed stone block, 4. Silt-stabilized soil layer, 5. First filling layer, 6. Subbase layer, 7. Woven bidirectional geotextile, 8. Second filling layer, 9. Semi-rigid base layer, 10. Road surface, 11. Grouting holes and 12.

[0025] The gravel and sand layer 1 is built on the original foundation, and its thickness is generally set to 0.5-0.8m.

[0026] A layer of solidified silt soil 4 is laid on top of the gravel and sand layer 1, with a thickness generally set at 1.0-1.2m. The solidified silt soil layer 4 can specifically be a slab structure formed by solidifying fluid silt soil. This structural form has the characteristics of good integrity and is not prone to settlement.

[0027] A first filling layer 5 is laid on top of the silt-stabilized soil layer 4. The material of the first filling layer 5 is generally an existing 4% cement-stabilized graded gravel layer, and its thickness is generally set to 0.2-0.4m.

[0028] A subbase 6 is laid on top of the first filling layer 5. The subbase 6 is generally made of existing reinforced concrete, and its thickness is generally set to 0.1-0.2m. The subbase 6 provides stable support for the layer above.

[0029] A woven bi-directional geotextile 7 is laid on top of the subbase 6. The woven bi-directional geotextile 7 can play a role in isolation and seepage prevention, effectively protecting the road structure below from damage by external forces.

[0030] A second filling layer 8 is laid on top of the woven biaxial geotextile 7. The material of the second filling layer 8 is generally an existing 6% cement-stabilized graded gravel layer, and its thickness is generally set to 0.25-0.35m.

[0031] A semi-rigid base course 9 is laid on top of the second fill layer 8. The material of the semi-rigid base course 9 is generally an existing cement-stabilized crushed stone layer, and its thickness is generally set to 0.15-0.25m. The second fill layer 8 and the semi-rigid base course 9 mainly serve to support the road surface 10 above.

[0032] The pavement 10 is laid on the semi-rigid base 9. The material of the pavement 10 is generally an existing asphalt concrete layer, and its thickness is generally set to 0.15-0.35m.

[0033] The load from the road surface 10 can be dispersed through the combined action of the first filling layer 5, the subbase layer 6, and the second filling layer 8. Specifically, the load borne by the road surface 10 is first partially dispersed by the semi-rigid base layer 9, and then uniformly transferred to the silt-stabilized soil layer 4 through the second filling layer 8, the subbase layer 6, and the first filling layer 5 in sequence.

[0034] In this invention, multiple sets of lower crushed stone blocks 2 and upper crushed stone blocks 3 are provided in the crushed stone and gravel layer 1, the silt-stabilized soil layer 4, and the first filling layer 5. Each set consists of one lower crushed stone block 2 and one upper crushed stone block 3. The lower crushed stone block 2 and the upper crushed stone block 3 are vertically arranged, with the lower crushed stone block 2 located below the upper crushed stone block 3. Furthermore, the lower crushed stone block 2 and the upper crushed stone block 3 have the same diameter. Multiple such combinations can be provided and evenly distributed. The distance between adjacent sets is 1-2m, preferably 1.5m. Specifically, the lower end of the lower crushed stone pier 2 is inserted into the crushed stone and gravel layer 1 at a depth of 0.1-0.3m; the upper end of the lower crushed stone pier 2 is located in the silt-stabilized soil layer 4; the upper end of the upper crushed stone pier 3 is inserted into the first filling layer 5, and the upper end of the upper crushed stone pier 3 is in contact with the lower surface of the cushion layer 6; the lower end of the upper crushed stone pier 3 is located in the silt-stabilized soil layer 4, and the lower end of the upper crushed stone pier 3 is in contact with the upper end of the lower crushed stone pier 2. Multiple sets of lower crushed stone piers 2 and upper crushed stone piers 3 can better withstand the load from above, improve the structural stability of the silt-stabilized soil layer 4, make the silt-stabilized soil layer 4 more stable, increase its bearing capacity, and prevent loosening and settlement problems.

[0035] The construction methods for the lower crushed stone pier 2 and the upper crushed stone pier 3 can be carried out according to existing technology. As a preferred embodiment, a crushed stone and gravel layer 1, a silt-stabilized soil layer 4, and a first filling layer 5 can be laid sequentially. Then, a modified auger drills are used to drill holes, sequentially drilling into the first filling layer 5, the silt-stabilized soil layer 4, and the crushed stone and gravel layer 1 from top to bottom. The resulting hole 12 is then filled with crushed stone with a particle size of 15-20mm and compacted to form the lower crushed stone pier 2. Next, crushed stone with a particle size of 5-10mm is filled and compacted to form the upper crushed stone pier 3. The minimum compaction degree of the lower crushed stone pier 2 and the upper crushed stone pier 3 is 0.93. All lower crushed stone piers 2 and upper crushed stone piers 3 can be constructed using this method.

[0036] After the lower crushed stone block 2 and the upper crushed stone block 3 are completed, continue to lay the subbase 6, woven bidirectional geotextile 7, second filling layer 8, semi-rigid base layer 9 and pavement 10 according to the existing road construction method.

[0037] In a preferred embodiment, grouting holes 11 can also be provided in the gravel and sand layer 1, the silt-stabilized soil layer 4, and the first filling layer 5. Specifically, in the first case, multiple grouting holes 11 and multiple holes 12 for constructing the lower gravel pier 2 and the upper gravel pier 3 are simultaneously constructed using a modified auger drill. The diameter of the grouting holes 11 is the same as that of the holes 12 for constructing the lower gravel pier 2 and the upper gravel pier 3; their arrangement is preferably as follows: Figure 3 As shown, multiple grouting holes 11 and multiple holes 12 used to make the lower crushed stone block 2 and the upper crushed stone block 3 are arranged in a series of evenly spaced intervals, that is, the spacing between adjacent grouting holes 11 and holes 12 is the same.

[0038] In the second scenario, instead of setting up lower and upper crushed stone blocks 2 and 3, multiple evenly distributed grouting holes 11 are directly installed. Specifically, a crushed stone and gravel layer 1, a silt-stabilized soil layer 4, and a first filling layer 5 are laid sequentially. Then, a modified auger is used for drilling, drilling from top to bottom into the first filling layer 5, the silt-stabilized soil layer 4, and the crushed stone and gravel layer 1, thereby forming grouting holes 11. The spacing between two adjacent grouting holes 11 is 1-2m, preferably 1.5m.

[0039] In both the first and second scenarios described above, after the grouting holes 11 are constructed, a reinforced concrete structure can be built within them using existing reinforced concrete construction methods. The upper end of this reinforced concrete structure connects to the lower end of the cushion layer 6, and its lower end is inserted into the gravel and sand layer 1 to a depth of 0.1-0.3 m. This reinforced concrete structure penetrates the first filling layer 5 and the entire silt-stabilized soil layer 4, further providing stable support to both layers and effectively controlling and reducing settlement.

[0040] In this invention, the optimal configuration is one that simultaneously includes a lower crushed stone pier 2, an upper crushed stone pier 3, and a reinforced concrete structure in the grouting hole 11, thus achieving the optimal road structure design for reducing settlement.

[0041] This utility model provides a settling-reducing road structure for wastewater treatment plants, mainly applicable to wastewater treatment plant areas. Before constructing the various treatment ponds in the wastewater treatment plant area, the settling-reducing road structure is constructed first. After the settling-reducing road structure is completed, the treatment ponds are then constructed on top of it. At this point, the road surface 10, semi-rigid base layer 9, and second filling layer 8 can be excavated sequentially. Then, the pond structure is constructed on the woven bi-directional geotextile 7 using existing construction methods. The structures below the woven bi-directional geotextile 7 in the settling-reducing road structure remain unchanged. This method achieves anti-settlement design for the treatment ponds in the wastewater treatment plant area, providing stable support and reducing the occurrence of settlement. To reduce construction costs, the treatment ponds can be constructed simultaneously with the settling-reducing road structure; that is, the second filling layer 8, semi-rigid base layer 9, and road surface 10 are not constructed at the construction locations of the treatment ponds, and the treatment ponds are constructed directly. Figure 4 As shown, other normal driving roads and pedestrian roads in the sewage treatment plant area are constructed according to the aforementioned settling reduction road structure.

[0042] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A sediment reduction road structure for a sewage treatment plant, characterized in that, include: The gravel and sand layer (1), the silt-stabilized soil layer (4), the first filling layer (5), the cushion layer (6), the woven bidirectional geotextile (7), the second filling layer (8), the semi-rigid base layer (9), and the road surface (10) are arranged sequentially from bottom to top. Multiple sets of lower gravel blocks (2) and upper gravel blocks (3) are arranged in the gravel and sand layer (1), the silt-stabilized soil layer (4), and the first filling layer (5). Each set includes one lower gravel block (2) and one upper gravel block (3). The lower gravel block (2) and the upper gravel block (3) are arranged vertically and the lower gravel block (2) is located below the upper gravel block (3). Multiple sets of lower gravel blocks (2) and upper gravel blocks (3) are evenly distributed.

2. The wastewater treatment plant settling reduction road structure according to claim 1, characterized in that, The upper end of the lower crushed stone block (2) is located in the silt-stabilized soil layer (4), and its lower end is inserted into the crushed stone and gravel layer (1); the upper end of the upper crushed stone block (3) is inserted into the first filling layer (5), and its upper end is connected to the lower surface of the cushion layer (6); the lower end of the upper crushed stone block (3) is located in the silt-stabilized soil layer (4), and its lower end is connected to the upper end of the lower crushed stone block (2).

3. The wastewater treatment plant settling reduction road structure according to claim 1, characterized in that, The lower crushed stone block (2) and the upper crushed stone block (3) have the same diameter.

4. The wastewater treatment plant settling reduction road structure according to claim 1, characterized in that, The lower end of the crushed stone block (2) is inserted into the crushed stone and gravel layer (1) at a depth of 0.1-0.3m.

5. The wastewater treatment plant settling reduction road structure according to claim 1, characterized in that, In the multiple sets of lower crushed stone blocks (2) and upper crushed stone blocks (3), the distance between two adjacent sets is 1-2m.

6. The wastewater treatment plant settling reduction road structure according to claim 1, characterized in that, The lower crushed stone block (2) is made of crushed stone with a particle size of 15-20mm; the upper crushed stone block (3) is made of crushed stone with a particle size of 5-10mm.

7. The wastewater treatment plant settling reduction road structure according to claim 1, characterized in that, It also includes multiple grouting holes (11), which are evenly distributed between multiple sets of lower crushed stone blocks (2) and upper crushed stone blocks (3); each grouting hole (11) is provided with a reinforced concrete structure; the upper end of the reinforced concrete structure is connected to the lower end of the cushion layer (6), and its lower end is inserted into the crushed stone gravel layer (1) at a depth of 0.1-0.3m; the reinforced concrete structure penetrates the first filling layer (5) and the silt solidified soil layer (4).

8. The wastewater treatment plant settling reduction road structure according to claim 7, characterized in that, The reinforced concrete structure, the lower crushed stone pier (2), and the upper crushed stone pier (3) have the same diameter.

9. The wastewater treatment plant settling reduction road structure according to claim 1, characterized in that, Instead of setting up lower crushed stone piers (2) and upper crushed stone piers (3), multiple uniformly distributed grouting holes (11) are directly set up; a reinforced concrete structure is set up in each grouting hole (11); the upper end of the reinforced concrete structure is connected to the lower end of the cushion layer (6), and its lower end is inserted into the crushed stone gravel layer (1) at a depth of 0.1-0.3m; the reinforced concrete structure penetrates the first filling layer (5) and the silt solidified soil layer (4).

10. The wastewater treatment plant settling reduction road structure according to claim 9, characterized in that, The distance between two adjacent grouting holes (11) is 1-2m.

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