Shallow pipeline protection construction method

Abstract

The present application relates to a kind of shallow pipeline protection construction method, comprising the following steps: a. break the original road, and clean up the soil layer around pipeline, so that the height of soil layer is below pipeline;B. support foundation is poured in the soil layer on both sides of pipeline, and pre-embedded setting has vertical support in support foundation, the upper end of vertical support is higher than pipeline;C. barrier sheet is set on both sides of pipeline, and barrier sheet is located between pipeline and vertical support;D. backfill soil layer to the top of vertical support, the soil layer between two barrier sheets keeps virtual paving state, and the soil layer outside two barrier sheets is compacted;E. set cover plate above pipeline, and the two sides of cover plate are supported by vertical support;F. continue backfill soil layer to design height, and compact soil layer;G. carry out road surface construction.The present application is simple in structure, can effectively protect the pipeline with shallow depth, especially suitable for old building and the road renewal reconstruction construction of community.

Description

Technical Field

[0001] This invention relates to a method for constructing shallow pipeline protection. Background Technology

[0002] Currently, the underground pipelines in old buildings and old residential areas are complex and shallow, and the strength of conventional road surface structures cannot meet the requirements. Even if the road surface is updated and paved, it will still affect the underground pipelines after a period of use. This is especially true for gas pipelines that are buried at shallow depths. If the strength of the protective structure above them is insufficient, the gas pipelines may be damaged when they are run over by vehicles, which will seriously affect the lives and safety of residents. However, due to design limitations, the design height of the road cannot be increased. The only option is to reinforce the structure above the pipelines within the limited height to protect them. Summary of the Invention

[0003] The purpose of this invention is to provide a shallow pipeline protection construction method to solve the problem that existing shallow pipelines cannot be protected and are easily damaged.

[0004] The present invention is implemented as follows: a shallow pipeline protection construction method, comprising the following steps.

[0005] a. Demolish the existing road and clear the soil around the pipeline so that the soil level is below the pipeline.

[0006] b. Construct a support foundation in the soil on both sides of the pipeline, and pre-embed vertical support components on the support foundation, with the upper end of the vertical support components higher than the pipeline.

[0007] c. Install barrier sheets on both sides of the pipe, with the barrier sheets located between the pipe and the vertical support.

[0008] d. Backfill the soil layer to the top of the vertical support. The soil layer between the two barrier sheets should be kept loose, and the soil layer outside the two barrier sheets should be compacted.

[0009] e. Install a cover plate above the pipe, with vertical supports on both sides of the cover plate.

[0010] f. Continue backfilling the soil layer to the designed height and compact the soil layer.

[0011] g. Carry out road surface layer construction.

[0012] For the shallow pipeline protection construction method of the present invention, the road surface layer structure from bottom to top consists of a C30 concrete layer, an emulsified asphalt tack coat, medium-grained asphalt concrete, and fine-grained asphalt concrete.

[0013] For the shallow pipeline protection construction method of the present invention, the thickness of the C30 concrete layer is 150~250mm, the thickness of the medium-grained asphalt concrete is 30~80mm, and the thickness of the fine-grained asphalt concrete is 20~40mm.

[0014] In the shallow pipeline protection construction method of the present invention, the barrier sheet is arranged vertically or in a figure-eight shape.

[0015] In the shallow pipeline protection construction method of the present invention, the barrier sheet is a fine metal mesh sheet.

[0016] In the shallow pipeline protection construction method of the present invention, the supporting foundations are spaced apart along the length of the pipeline.

[0017] In the shallow pipeline protection construction method of the present invention, the top of the vertical support is an inclined surface, and both sides of the cover plate are also inclined surfaces.

[0018] This invention protects shallowly buried pipelines with a protective device before the road surface is laid. This effectively protects the pipeline. When subjected to greater pressure, the pressure transmitted from above the pipeline is mainly borne by the cover plate. The cover plate then transmits the pressure to the supporting base on both sides of the pipeline through the vertical support members on both sides. The pressure transmitted to the pipeline is very small, which can effectively prevent the pipeline from being damaged by pressure.

[0019] When subjected to significant pressure, such as from the wheels of large construction vehicles, the road will deform accordingly. The cover plate will also deform accordingly. Because the soil layer above the pipeline is loosely laid, the downward pressure transmitted when the cover plate deforms is alleviated by the soil layer, and the pipeline will not experience significant pressure. Since the soil layer between the barrier sheets and the columns on both sides of the pipeline is compacted, when the cover plate continues to deform, the pressure is mainly received by this part of the soil layer and transmitted downwards and to the sides, thus maximizing the protection of the pipeline.

[0020] Furthermore, the pavement structure has been improved compared to conventional pavement structures, employing a C30 concrete layer. The C30 concrete layer possesses greater structural strength, capable of withstanding higher pressures, thus enhancing the pavement's load-bearing capacity, preventing pavement damage, and protecting underlying pipelines. The C30 concrete layer reduces the thickness of the road surface layer, allowing for construction according to elevation standards and providing sufficient space underneath for road safety devices.

[0021] This invention has a simple structure and can effectively protect pipelines buried at shallow depths, making it especially suitable for road renovation and reconstruction projects in old buildings and residential areas. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of the present invention.

[0023] 1. Pipeline; 2. Support foundation; 3. Vertical support components; 4. Cover plate; 5. Barrier sheet; 6. C30 concrete layer; 7. Medium-grained asphalt concrete; 8. Fine-grained asphalt concrete. Detailed Implementation

[0024] like Figure 1 As shown, the present invention is a construction method for protecting a shallow pipeline 1, which includes the following steps.

[0025] Step 1: Demolish the existing road and clear the soil around pipe 1 so that the soil level is below pipe 1.

[0026] After clearing away the existing road structure, the main task is to excavate the soil around pipeline 1. For other parts of the soil, only the upper part needs to be excavated to save on the amount of work.

[0027] Step 2: Pour a support foundation 2 in the soil layer on both sides of the pipeline 1, and pre-embed vertical support components 3 on the support foundation 2. The upper end of the vertical support components 3 is higher than the pipeline 1.

[0028] When pouring the supporting foundation 2, vertical support members 3 are pre-embedded in the supporting foundation 2, and then the concrete is poured. The supporting foundation 2 is a concrete block. A rectangular foundation pit is excavated in the soil layer as a soil mold. The bottom of the vertical support member 3 is placed in the rectangular foundation pit, and then the concrete is poured to fix the vertical support member 3 in the supporting foundation 2.

[0029] Vertical support component 3 is a column.

[0030] The supporting foundations 2 are distributed at intervals along the length of the pipe 1, and the supporting foundations 2 on both sides of the pipe 1 are arranged symmetrically.

[0031] Step 3: Install barrier sheets 5 on both sides of pipe 1. The barrier sheets 5 are located between pipe 1 and vertical support 3.

[0032] The barrier sheet 5 can be a sheet material or a fine metal mesh sheet, which can play a certain role in blocking the soil layers on both sides.

[0033] Among them, the barrier sheet 5 is set vertically or in a figure-eight shape.

[0034] Step 4: Backfill the soil layer to the top of the vertical support 3. The soil layer between the two barrier sheets 5 is kept loose, and the soil layer outside the two barrier sheets 5 is compacted.

[0035] The soil layer on the outside of the barrier sheet 5 is laid to a height exceeding that of the vertical support 3 by a certain amount, and then compacted using tamping equipment until it is the same height as the support. As for the area between the two barrier sheets 5, after filling with a loose soil layer, a simple compaction operation is sufficient, without further tamping.

[0036] Step 5: Install a cover plate 4 above the pipe 1. The two sides of the cover plate 4 are supported by vertical support members 3.

[0037] The cover plate 4 is made of steel plate or precast reinforced concrete slab, which has strong structural strength and rigidity and can resist certain deformation.

[0038] The top of the vertical support 3 is a slope, and the two sides of the cover plate 4 are also slopes. The cover plate 4 can be easily placed and fixed on the top of the vertical support 3.

[0039] Step 6: After fixing cover plate 4, continue backfilling the soil layer to the design height and compact the soil layer.

[0040] Step 7: Carry out road surface construction.

[0041] For the shallow pipeline 1 protection construction method of the present invention, the road surface layer structure from bottom to top is C30 concrete layer 6, emulsified asphalt tack coat, medium-grained asphalt concrete 7, and fine-grained asphalt concrete 8.

[0042] Specifically, the thickness of C30 concrete layer 6 is 150~250mm, the thickness of medium-grained asphalt concrete 7 is 30~80mm, and the thickness of fine-grained asphalt concrete 8 is 20~40mm.

[0043] The original asphalt pavement construction method consisted of a 150mm thick 3:7 lime-soil mixture, a 150mm thick lime-fly ash mixture, a 150mm thick cement-stabilized crushed stone emulsified asphalt tack coat, a 50mm thick medium-grained asphalt concrete 7 (AC-16C), and a 30mm thick fine-grained asphalt concrete 8 (AC-13C). Using the construction method of this invention, the pavement structure is adjusted to a 200mm thick C30 concrete structure, followed by an emulsified asphalt tack coat, a 50mm thick medium-grained asphalt concrete 7 (AC-16C), and a 30mm thick fine-grained asphalt concrete 8 (AC-13C).

[0044] The road surface structure utilizes a C30 concrete layer 6. This layer possesses high structural strength, can withstand significant pressure, enhances the load-bearing capacity of the road structure, prevents road surface damage, and protects the underlying pipeline 1. The C30 concrete layer 6 reduces the thickness of the road surface layer, allowing for construction according to elevation standards and providing sufficient space underneath for road safety devices.

[0045] This invention protects the shallowly buried pipeline 1 with a protective device before the road surface layer is laid. This effectively protects the pipeline 1. When subjected to greater pressure, the pressure transmitted from above the pipeline 1 is mainly borne by the cover plate 4. The cover plate 4 then transmits the pressure to the supporting foundations 2 on both sides of the pipeline 1 through the vertical support members 3 on both sides. The pressure transmitted to the pipeline 1 is very small, which can effectively prevent the pipeline 1 from being damaged by pressure.

[0046] When subjected to significant pressure, such as from the wheels of large construction vehicles, the road will deform accordingly. The cover plate 4 will also deform accordingly. Since the soil layer above the pipe 1 is loosely laid, the downward pressure transmitted by the deformed cover plate 4 is alleviated by the soil layer, and the pipe 1 will not experience significant pressure. Because the soil layer between the barrier sheets 5 on both sides of the pipe 1 and the columns is compacted, when the cover plate 4 continues to deform, the pressure is mainly received by this part of the soil layer and transmitted downwards and to both sides, thus maximizing the protection of the pipe 1.

[0047] This invention has a simple structure and can effectively protect shallowly buried pipelines 1, making it especially suitable for road renovation and reconstruction projects in old buildings and residential areas.

Claims

1. A method for constructing shallow pipeline protection, characterized in that, Includes the following steps: a. Demolish the existing road and clear the soil around the pipeline so that the soil level is below the pipeline; b. Construct a support foundation in the soil on both sides of the pipeline, and pre-embed vertical support components on the support foundation, with the upper end of the vertical support components higher than the pipeline. c. Barrier sheets are installed on both sides of the pipe, with the barrier sheets located between the pipe and the vertical support; the barrier sheets are vertically installed or in a figure-eight shape; the barrier sheets are made of fine metal mesh. d. Backfill the soil layer to the top of the vertical support. The soil layer between the two barrier sheets should be loosely laid, and the soil layer outside the two barrier sheets should be compacted. e. Install a cover plate above the pipe, with vertical supports on both sides of the cover plate; f. Continue backfilling the soil layer to the designed height and compact the soil layer; g. Carry out road surface layer construction; the road surface layer structure from bottom to top consists of C30 concrete layer, emulsified asphalt tack coat, medium-grained asphalt concrete and fine-grained asphalt concrete.

2. The shallow pipeline protection construction method according to claim 1, characterized in that, The thickness of the C30 concrete layer is 150~250mm, the thickness of the medium-grained asphalt concrete is 30~80mm, and the thickness of the fine-grained asphalt concrete is 20~40mm.

3. The shallow pipeline protection construction method according to claim 1, characterized in that, The supporting foundations are spaced apart along the length of the pipeline.

4. The shallow pipeline protection construction method according to claim 1, characterized in that, The top of the vertical support is a slope, and both sides of the cover plate are also slopes.

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