Basement pipeline through-wall low-influence construction method based on rigid-flexible partition plugging

Abstract

The invention relates to the technical field of building transformation, in particular to a basement pipeline through-wall low-influence construction method based on rigid-flexible partition plugging, which comprises the following steps: S1, rigid waterproof sleeve pretreatment and accurate drilling of a wall body, S2, double-gap rigid-flexible partition composite plugging, and S3, additional waterproof layer construction. According to the basement pipeline through-wall low-influence construction method based on rigid-flexible partition blocking, the problem of blocking material loosening and leakage caused by the water hammer effect and temperature shrinkage can be reduced to the maximum extent, the reliability and durability of through-wall seepage prevention work of old community reconstruction engineering are improved, meanwhile, fault tolerance is increased compared with a standard conventional method, and the construction cost is reduced. The leakage problem is reduced to the maximum extent; the reliable long-term waterproof effect is achieved through the innovative rigid-flexible partition and multiple sealing structural design and the matched low-influence construction technology with the lowest material cost and energy consumption, and the requirement for green building is met.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of building reconstruction, and in particular to a basement pipe wall-penetrating low-impact construction method based on rigid-flexible partition plugging. BACKGROUND

[0002] The reconstruction of old community basement water supply pipes is a people-benefiting project, but the wall-penetrating node construction faces special challenges. First, the original brick wall, concrete wall or brick-concrete wall is aging and may have micro cracks, and traditional single material plugging is prone to failure due to deformation. Second, the reconstruction project has a limited budget, and the cost of materials and construction needs to be strictly controlled. Third, the construction site conditions are complex, large high-energy consumption equipment is difficult to enter, and the disturbance to the original structure and environmental impact needs to be minimized.

[0003] The commonly used wall-penetrating pipe construction method is to use high-performance and high-cost materials (such as micro-expanding cement and flexible sealant for full filling), or to use a simple but unreliable process (such as asphalt hemp sealing). The former is not cost-effective and difficult to promote in old reconstruction projects. The latter has insufficient water resistance and durability, and is prone to leakage, leading to repeated maintenance and increasing the life cycle cost and environmental burden. Therefore, there is an urgent need for a wall-penetrating pipe construction method that balances reliability, cost-effectiveness and green construction. SUMMARY

[0004] In order to solve the problems existing in the prior art, the present application provides a basement pipe wall-penetrating low-impact construction method based on rigid-flexible partition plugging.

[0005] The basement pipe wall-penetrating low-impact construction method based on rigid-flexible partition plugging provided by the present application comprises the following steps: S1, rigid waterproof sleeve pretreatment and wall precise drilling, specifically including: rust removal treatment of the rigid waterproof sleeve, wall drilling and cleaning of the hole dregs and particles after drilling; S2, double-gap rigid-flexible partition composite plugging, specifically including: the same three-zone plugging strategy is adopted for the gap between the rigid waterproof sleeve and the wall and the gap between the rigid waterproof sleeve and the water pipe, the middle third section of the annular gap in the axial direction is filled in the flexible sealing zone, and a butyl rubber waterproof mortar layer is used, and the inner and outer third sections of the annular gap are filled in the rigid sealing zone, and a basalt fiber toughness mortar layer mixed with a composite rapid-setting waterproof agent is used; S3, additional waterproof layer construction, specifically including: after cleaning the wall base surface on the indoor side, two coats of single-component water-based polymer waterproof coating are applied to the surface and the periphery to form an enhanced waterproof layer, and an "outer L-shaped" waterproof mortar layer is made of waterproof mortar on the outdoor side.

[0006] By adopting the technical scheme, the basement pipeline wall-penetrating low-impact construction method based on rigid and flexible partition plugging can maximize the reduction of the plugging material relaxation and leakage problems caused by water hammer effect and temperature shrinkage, improve the reliability and durability of the wall-penetrating anti-seepage work of the old community reconstruction project, increase the fault tolerance compared with the conventional method, and minimize the leakage problems; with the lowest material cost and energy consumption, the innovative rigid and flexible partition, multiple sealing structure design and the low-impact construction process matched therewith realize reliable long-term waterproof effect, and meet the requirements of green construction.

[0007] Preferably, the waterproof mortar layer is coated with two layers of single-component water-based polymer waterproof coating.

[0008] Preferably, the waterproof mortar layer is made of 1:2.5 waterproof mortar (mixed with 5% waterproof powder) and is manually troweled.

[0009] Preferably, a decorative ring is installed outside the waterproof layer on the indoor side, and the decorative ring is attached to the wall surface.

[0010] Preferably, the butyl rubber waterproof mortar layer is manually kneaded and pressed, and an arc-shaped hammer made of rubber and the like is used to ensure filling and compaction.

[0011] Preferably, the inside of the rigid waterproof sleeve is manually brushed with a steel wire brush to remove loose rust and debris, expose the metal matrix, and the outer wall is coated with a single-component water-based anti-rust paint.

[0012] Preferably, the wall hole is drilled using a light water drill with a power of not greater than 1.5 kW, and the drilling diameter is strictly controlled to be the outer diameter of the rigid waterproof sleeve + 100 mm (± 5 mm); after drilling, a blowing machine with a power of not greater than 0.5 kW is used to clean the hole with manual hole cleaning shovel to remove the slags in the hole and ensure that the hole wall is free of loose particles. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 is a sectional view of the construction structure involved in the embodiment of the present application.

[0014] Explanation of reference numerals: 1, wall; 2, rigid waterproof sleeve; 3, butyl rubber waterproof mortar layer; 4, basalt fiber toughness mortar layer; 5, water pipe; 6, waterproof layer; 7, decorative ring; 8, waterproof mortar layer. DETAILED DESCRIPTION

[0015] The following will be combined Figure 1 to further illustrate the present application.

[0016] The embodiment of the application discloses a basement pipeline wall-penetrating low-impact construction method based on rigid-flexible partition plugging, and the construction structure involved comprises a wall body 1, a rigid waterproof sleeve 2, a butyl rubber waterproof mortar layer 3, a basalt fiber toughness mortar layer 4, a water pipe 5, a waterproof layer 6, a decorative ring 7 and a waterproof mortar layer 8.

[0017] The construction comprises the following steps: S1, rigid waterproof sleeve 2 pretreatment and wall body 1 accurate drilling, specifically comprising: the rigid waterproof sleeve 2 adopts ordinary carbon steel, the inner diameter of which is 40mm larger than the outer diameter of the water pipe 5; the inside of the rigid waterproof sleeve 2 is rusted by a hand steel wire brush, only the loose loose rust and sundries need to be removed, the metal matrix can be exposed, and the outer wall is brushed with a single-component water-based anti-rust paint; a light water drill with a power of not more than 1.5kW is used to drill the wall body 1, and the drilling diameter is strictly controlled to be the outer diameter of the rigid waterproof sleeve 2+100mm (±5mm); after drilling, a blowing machine with a power of not more than 0.5kW is used to clear the hole with manual hole cleaning shovel to remove the hole and ensure that the hole wall is free of loose particles, thereby providing a good base for subsequent plugging.

[0018] S2, double-gap rigid-flexible partition composite plugging, which is a key step of the application, specifically comprising: the same three-zone plugging strategy is adopted for the gap between the rigid waterproof sleeve 2 and the wall body 1 and the gap between the rigid waterproof sleeve 2 and the water pipe 5. a. Flexible sealing zone construction: first, the middle third section of the annular gap in the axial direction is filled with a low-cost, high-plasticity butyl rubber waterproof mortar layer 3 (or similar plastic sealing material), which is permanently uncured, and is manually kneaded and pressed into the gap, and an arc-shaped hammer made of rubber and other materials is used to ensure that the filling is dense, and a "flexible sealing band" that can adapt to the micro-deformation of the wall body 1 and the water pipe 5 is formed in this area; b. Rigid sealing zone construction: after the flexible sealing zone construction is completed, the inner and outer third sections of the annular gap are filled with a basalt fiber toughness mortar layer 4 mixed with a composite rapid-setting waterproof agent, and the layer is manually layered, tamped and smoothed. c. Synergistic effect: the middle flexible zone absorbs deformation stress to prevent cracking, and the two rigid zones provide mechanical support and durable protection, the two zones are complementary to each other and jointly form a composite waterproof sealing body with low cost but reliable performance, and after the plugging is completed, no additional maintenance is required, and the strength is developed relying on the material itself.

[0019] S3, additional waterproof layer construction, specifically comprising: a. Indoor side: after the wall body 1 base is cleaned, two single-component water-based polymer waterproof coatings are applied on the surface and periphery of the wall body 1, forming an enhanced waterproof layer 6. A triangular thickening layer is added to the hole and the outside of the water pipe 5, and a decorative ring 7 is installed outside, closely attached to the wall, to ensure the indoor appearance.

[0020] b. Outdoor side: "L-shaped" waterproof mortar layer 8 is made by hand with 1:2.5 waterproof mortar (mixed with 5% waterproof powder), which exceeds the hole edge by 100 mm. The surface is also coated with two coats of the above-mentioned single-component water-based polymer waterproof coating, which uses its flexibility to compensate for possible dry shrinkage micro-cracks in the mortar.

[0021] The basement pipe wall-penetrating low-impact construction method based on rigid and flexible partition plugging can maximize the relaxation and leakage problems of the plugging material caused by water hammer effect and temperature shrinkage, improve the reliability and durability of the wall-penetrating anti-seepage work of the old community reconstruction project, increase the fault tolerance compared with the conventional method, and minimize the leakage problems; with the lowest material cost and energy consumption, through the innovative "rigid and flexible partition, multiple sealing" structure design and the matching low-impact construction process, a reliable long-term waterproof effect is achieved, and the requirements of green construction are met.

[0022] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, therefore: any equivalent changes made in the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A low-impact construction method for a basement pipe wall penetration based on rigid-flex partition plugging, characterized in that, The method comprises the following steps: S1, pre-treatment of rigid waterproof sleeve (2) and accurate drilling of wall body (1), specifically including: rust removal treatment of rigid waterproof sleeve (2), drilling of wall body (1) and cleaning of floating dregs and particles in the hole after drilling; S2, double-gap rigid-flexible partition composite plugging, specifically including: the same three-part plugging strategy is adopted for the gap between rigid waterproof sleeve (2) and wall body (1) and the gap between rigid waterproof sleeve (2) and water pipe (5), the middle third section of the annular gap in the axial direction is filled in the flexible sealing area, and a butyl rubber waterproof mortar layer (3) is adopted, the inner and outer third sections of the annular gap are filled in the rigid sealing area, and a basalt fiber toughness mortar layer (4) mixed with a composite rapid-setting waterproof agent is adopted; S3, construction of additional waterproof layer (6), specifically including: after cleaning the base surface of wall body (1) on the indoor side, two coats of single-component water-based polymer waterproof coating are applied on the surface and periphery to form an enhanced waterproof layer (6), and on the outdoor side, "outer L-shaped" waterproof mortar layer (8) is made of waterproof mortar.

2. The low-impact construction method for passing through the wall of a basement pipeline based on rigid-flex partition plugging according to claim 1, characterized in that: Two coats of single-component water-based polymer waterproof coating are applied on the surface of waterproof mortar layer (8).

3. The low-impact construction method for passing through the wall of a basement pipeline based on rigid-flex partition plugging according to claim 1, characterized in that: Waterproof mortar layer (8) is made of 1:2.5 waterproof mortar (mixed with 5% waterproof powder) by hand.

4. The low-impact construction method for basement pipe wall penetration based on rigid-flex partition plugging according to claim 1, characterized in that: The waterproof layer (6) on the indoor side is installed with a decorative ring (7) on the outer side, and the decorative ring (7) is tightly attached to the wall surface.

5. The low-impact construction method for basement pipe wall penetration based on rigid-flex partition plugging according to claim 1, characterized in that: The butyl rubber waterproof mortar layer (3) is kneaded and pressed in by hand, and an arc-shaped hammer made of rubber and other materials is used to ensure filling and compaction.

6. The low-impact construction method for basement plumbing wall penetration based on rigid-flex partition plugging according to claim 1, characterized in that: The inside of the rigid waterproof sleeve (2) is rusted by hand steel wire brush, and loose floating rust and debris are removed to expose the metal matrix, and the outer wall is coated with single-component water-based anti-rust paint.

7. The low-impact construction method for passing through the wall of a basement pipeline based on rigid-flex partition plugging according to claim 1, characterized in that: The hole of wall body (1) is drilled by a light water drill with a power not greater than 1.5 kW, and the drilling diameter is strictly controlled to be the outer diameter of the rigid waterproof sleeve (2) +100mm (±5mm); after drilling, a blowing machine with a power not greater than 0.5 kW is used to clean the hole with a manual hole cleaning shovel to remove the floating dregs in the hole and ensure that there are no loose particles on the hole wall.

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