CN215862114U - Sewage pipeline with waterproof structure inside - Google Patents
Sewage pipeline with waterproof structure inside Download PDFInfo
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- CN215862114U CN215862114U CN202121375864.3U CN202121375864U CN215862114U CN 215862114 U CN215862114 U CN 215862114U CN 202121375864 U CN202121375864 U CN 202121375864U CN 215862114 U CN215862114 U CN 215862114U
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Abstract
The utility model discloses a sewage pipeline with a waterproof structure inside, which comprises a pipeline substrate, wherein the inner surface of the pipeline substrate is a concrete base surface, and the concrete base surface is provided with an acrylate spray film waterproof layer; the surface of the waterproof layer is attached with a stainless steel wire mesh as a reinforcing layer, and anticorrosion mortar is poured on the surface of the steel wire mesh as an anticorrosion wear-resistant layer; the pipeline base body is provided with a probe mounting hole, and the testing end part of the probe penetrates through the anti-corrosion wear-resistant layer and extends into a pipe cavity of the sewage pipeline. The novel waterproof structure improves the waterproof and wear-resistant performance inside the sewage pipeline, avoids biological corrosion, solves the bonding problem between the waterproof layer and the wear-resistant corrosion layer, and also reserves monitoring points inside the pipeline.
Description
Technical Field
The utility model relates to the technical field of construction pipelines, in particular to a sewage pipeline with a novel waterproof structure inside.
Background
With the development of domestic underground space, the development of sponge cities is a new trend. The sponge city is a city which can be like a sponge and has good elasticity in the aspects of adapting to environmental changes, coping with natural disasters caused by rainwater and the like, and can also be called as a water elasticity city. The sponge city is a new concept of rain and flood management of a new generation city, has the beneficial effects of water flowing, water storage and water purification during rain, and the construction scale of the sponge city is getting larger and larger in the years. The sewage pipeline is an auxiliary building facility of sponge cities, and is used for collecting urban sewage, transferring the urban sewage through the sewage pipeline and then collecting the urban sewage for centralized treatment. Inside the sewage pipes, waterproofing is required for the purpose of protecting the structure of the cabin.
Generally, the sewage pipeline can adopt a shield method to construct an independent sewage pipe gallery, and at the moment, although the self-waterproof grade of shield segment concrete is higher, the splicing part of the shield segments and the reserved part of the bolt holes are weak links for protection; merge into utility tunnel as the bilge pit when sewage pipe, although utility tunnel is provided with the flexible waterproof layer of outsourcing, nevertheless because the sewage in the bilge pit possesses certain corrosivity, and the high-speed flowing occasionally of sewage erodees the effect, and all is the weak link of protection at movement joint, construction joint position. Therefore, it is necessary to provide a waterproof layer and a protective layer inside the sewage pipe.
In general, waterproof layer can be selected from waterproof coiled material and waterproof paint. However, the composite wear-resistant layer is required outside the waterproof layer, and the universal waterproof coiled material base is made of rubber or a plastic layer and cannot be compounded with wear-resistant layers such as anti-corrosion mortar, so that the waterproof material which can be bonded with concrete and can also be anti-bonded with the wear-resistant anti-corrosion mortar layer is selected. In the traditional sand control slurry, biological corrosion often occurs, namely, on the top of the existing sewage pipe network, a general silicate concrete (OPC) gel material is easily subjected to biodegradation, secondary biomembranes are greatly propagated on the inner surface of a sewage pipe, and finally non-viscous materials and expansion materials such as gypsum and/or ettringite are formed. If biodegradation of the cementitious material is not properly managed, it can lead to severe structural degradation, further contributing to significant maintenance costs. And the waterproof coiled material can not realize the anti-adhesion function with the wear-resistant mortar on the surface, thereby further limiting the application of the waterproof coiled material.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a novel waterproof structure in a sewage pipeline, which can meet the conventional internal waterproof and wear-resistant functions and avoid biological corrosion; meanwhile, the problem of adhesion between the waterproof layer and the wear-resistant corrosion layer is solved, and a pH value monitoring point is reserved in the pipeline.
The utility model adopts the following technical scheme:
a sewage pipeline with a novel waterproof structure inside comprises a pipeline base body, wherein the inner surface of the pipeline base body is a concrete base surface, and the concrete base surface is provided with an acrylate spray film waterproof layer; the surface of the waterproof layer is attached with a stainless steel wire mesh as a reinforcing layer, and anticorrosion mortar is poured on the surface of the steel wire mesh as an anticorrosion wear-resistant layer; the pipeline base body is provided with a probe mounting hole, and the testing end part of the probe penetrates through the anti-corrosion wear-resistant layer and extends into a pipe cavity of the sewage pipeline.
And a base coat is arranged between the acrylate spray film waterproof layer and the concrete base surface, the base coat is alkali-resistant sealing epoxy primer, and the acrylate spray film waterproof layer is made of silane modified acrylate spray film waterproof material described in CN 201810336782.4.
The thickness of the bottom coating is more than or equal to 0.2mm, and the thickness of the acrylate film-spraying waterproof layer is more than or equal to 2 mm.
The inside sewage pipeline that has novel waterproof construction, its pipeline base member is concrete placement or adopts the shield to construct the section of jurisdiction concatenation and form.
The novel waterproof sewage pipeline is characterized in that the novel waterproof sewage pipeline is arranged inside the novel waterproof sewage pipeline, the reinforcing layer is formed by connecting a plurality of steel wire meshes, the aperture of each steel wire mesh is 2-3mm, and the thickness of each steel wire mesh is 0.5-1.5 mm.
The sewage pipeline with the novel waterproof structure inside is characterized in that the thickness of the anticorrosion wear-resistant layer is 3.5-4.5 mm.
The sewage pipeline with the novel waterproof structure in the sewage pipeline is characterized in that the probe of the sewage pipeline comprises a pH probe, a flow velocity probe and a water quality probe, and the probe is protected by a PVC sleeve.
The inside of the sewage pipeline is provided with a novel waterproof structure, and a reinforcing layer of the sewage pipeline is fixed by a steel wire locking rope; the steel wire locking rope is composed of two hexagonal locking heads and a steel wire, one of the hexagonal locking heads is fixed with a reserved bolt steel bar of the shield segment or a reserved anchor rod head inside cast-in-place concrete, the other hexagonal locking head is fixed on the reinforcing layer, the fixing point is the cross point position of two stainless steels of the reinforcing layer, and the steel wire is connected with the two hexagonal locking heads.
Compared with the prior art, the utility model has at least the following beneficial effects: the waterproof and wear-resistant performance of the interior of the sewage pipeline is improved, biological corrosion is avoided, the problem of adhesion between a waterproof layer and a wear-resistant corrosion layer is solved, monitoring points are reserved in the interior of the pipeline, and the pH value, the flow velocity and the water quality can be monitored.
Drawings
Fig. 1 is a sectional view of a sewage pipe having a novel waterproof structure inside according to the present invention.
Fig. 2 is a schematic diagram of a steel wire mesh of a sewage pipeline with a novel waterproof structure inside.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further 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 utility model and are not intended to limit the utility model.
Example 1
As shown in fig. 1 and 2, the outmost layer of the sewage pipeline with the novel waterproof structure is a pipeline substrate 1, and the pipeline substrate is formed by cement pouring or splicing shield segments, so that the inner surface of the pipeline substrate is a concrete base surface, and the surface is clean, dry and pollution-free. The concrete base surface is provided with an acrylate spray film waterproof layer 2. A base coat is arranged between the acrylate spray film waterproof layer and the concrete base surface, and the base coat uses alkali-resistant closed epoxy primer, and mainly aims at avoiding the influence of a release agent on the adhesive force in the production and maintenance processes of the shield segment in a factory; the acrylate spray waterproof layer was a silane-modified acrylate spray waterproof material described in CN201810336782.4, and in this example, the spray waterproof material in CN201810336782.4 was selected (raw materials of component a: 100 parts of magnesium acrylate monomer solution, 15 parts of kaolin, 10 parts of white carbon black, 10 parts of calcium carbonate, 2 parts of alkaline regulator, and raw materials of component B: 100 parts of magnesium acrylate monomer solution, 15 parts of kaolin, 10 parts of white carbon black, 10 parts of calcium carbonate, and 2 parts of acidic regulator).
The combined thickness of the primer layer and the acrylate-spray-coated waterproof layer is at least 2.2mm, and includes at least 0.2mm thick primer layer and at least 2mm thick acrylate-spray-coated waterproof layer.
Primer set purpose: as the base coat, the adhesive has excellent effect on the concrete base surface, forms chemical adhesion with the concrete base surface, avoids the influence of a release agent on the adhesion force in the production and maintenance processes of a factory on the shield segment, has the adhesion strength of about 1.0MPa, has good compatibility with an acrylate spray film waterproof surface layer which is applied subsequently, and can form a whole.
The purpose of setting the waterproof layer of the acrylate spray film is as follows: the acrylate film-spraying waterproof material is also made of two-component materials, a curing agent is added, then spraying is carried out by using special equipment, the acrylate film-spraying waterproof material can be polymerized into a film within 3-5 s, the thickness of the sprayed film is preferably 2mm, and the acrylate film-spraying waterproof material is compounded with a bottom coating with the thickness of 0.2mm to form a waterproof layer. The waterproof layer of the acrylate spray film has excellent adhesion with the base coat, and no gap is generated. The acrylate spray film waterproof layer formed by the structure has good adhesion with a concrete pipeline substrate, excellent waterproofness and durability, and the anti-permeability strength of the acrylate spray film waterproof layer reaches 2.4MPa and is far greater than the water pressure in the pipeline.
The inner surface of the acrylate spray film waterproof layer 2 is attached with a stainless steel wire mesh as a reinforcing layer 3, the reinforcing layer is formed by connecting a plurality of steel wire mesh sheets, the steel wire mesh sheets are bound and fixed by binding wires, the last bending direction of the binding wires is parallel to the net sheets, the waterproof layer can be prevented from being damaged, and workers are prevented from being injured when mortar is smeared. The reinforcing layer adopts a steel wire mesh as a composite reinforcing layer, so that the overall strength and the wear resistance of the subsequent anti-corrosion mortar are enhanced; in addition, the steel wire mesh layer has certain intensity and deflection, and certain pressure can be formed to the waterproof layer inside, so that the supporting effect is achieved. The spraying film is tightly adhered to the surface of the waterproof layer as much as possible, and gaps are few. The steel wire mesh is bent along with the curvature of the pipeline, so that the strength is not high enough. The mesh sheet is preferably 6m × 1m (or can be adjusted according to actual conditions). The aperture of the steel wire mesh is 2mm, and the thickness of the steel wire mesh is 1 mm. As shown in fig. 2, the B side of the strengthening layer is directly inserted into the concrete structure of the pipeline base body, the B side is fixed after the concrete is solidified, the a side is sleeved with a hexagonal tapered end 6, the other hexagonal tapered end is fixed with the reserved bolt steel bar of the shield segment or the reserved anchor rod head inside the cast-in-place concrete, the two hexagonal tapered ends are connected by high-strength steel wires, namely, the steel wire locking rope is formed by the two hexagonal tapered ends and one steel wire, and the strengthening layer is fixed by the steel wire locking rope. And C, bending the edge C to form a ring, and bending the edge D to form the whole reinforcing layer into a pipeline shape, wherein the reinforcing layer is attached to the surface of the acrylate spray film waterproof layer.
Anticorrosion mortar is poured on the surface of the steel wire mesh to serve as an anticorrosion wear-resistant layer 4, the thickness of the anticorrosion wear-resistant layer is 4mm, and the anticorrosion mortar is a commonly used anticorrosion wear-resistant material in the field. The interior of the pipeline is washed by sewage for a long time, and the acrylate spray film waterproof layer is made of a flexible material and needs to bear the washing of flowing sewage, impurities and sundries in the sewage pipeline for a long time, so that the surface of the waterproof layer is provided with an anti-corrosion wear-resistant layer as a rigid layer to protect the flexible waterproof layer inside; in addition, sewage in the pipeline has uncertain corrosion conditions, and the corrosion of the anti-corrosion wear-resistant layer to the internal waterproof layer can be resisted and slowed down. The test proves that the anti-corrosion mortar and the surface of the sprayed film have good reverse adhesion, the bonding and drawing strength of the anti-corrosion mortar is up to 3MPa, the mortar block is pulled to crack when the anti-corrosion mortar is damaged, and the bonding part is not damaged. The anti-corrosion wear-resistant layer adopts an anti-corrosion layer containing aluminate substances to resist biological corrosion brought by microorganisms in sewage.
The pipeline base body is provided with a probe mounting hole, and the testing end part of the probe 5 penetrates through the anti-corrosion wear-resistant layer and extends into a pipe cavity of the sewage pipeline. The probe mounting holes can be arranged at the joints of the shield segments. The probe comprises a pH probe, a flow velocity probe and a water quality probe, and is protected by a PVC sleeve. The three observation points are arranged on the same diameter point vertical to the water flow direction, can be arranged at the splicing part and are distributed along the circumference of the pipeline. For example, at the pH monitoring point, an online pH meter is used for monitoring. The pH sensing probe is 0.5m deep into the pipeline, and the probe is protected by a pvc casing pipe so as to avoid damage. The pH reader is positioned outside the sewage pipeline and can directly read the pH value of the sewage in the pipeline.
Example 2
The waterproof layer of the acrylate spray film is sprayed on a base coat, the base coat is coated on a concrete base surface, and the base coat uses an alkali-resistant closed epoxy primer, so that the influence of a release agent on the adhesive force of the shield segment in the production and maintenance processes of a factory is mainly avoided.
The acrylate spray film waterproof layer is prepared by adopting the technical scheme in CN201810336782.4, the total thickness of the acrylate spray film waterproof layer is 3.5mm, and the acrylate spray film waterproof layer consists of a base coat with the thickness of 0.5mm and an acrylate spray film waterproof layer with the thickness of 3 mm. The acrylate spray film layer with the thickness of 3mm is two components and is white after polymerization (the raw materials of the component A comprise 100 parts of magnesium acrylate monomer solution, 15 parts of kaolin, 10 parts of white carbon black, 10 parts of calcium carbonate and 4 parts of alkaline regulator, and the raw materials of the component B comprise 100 parts of magnesium acrylate monomer solution, 15 parts of kaolin, 10 parts of white carbon black, 10 parts of calcium carbonate and 5 parts of acidic regulator).
The inner surface of the acrylate film-spraying waterproof layer is attached with a stainless steel wire mesh as a reinforcing layer, and the reinforcing layer is formed by connecting a plurality of steel wire mesh sheets. The mesh sheet is selected to be 6m multiplied by 1m in specification, the aperture of the steel wire mesh sheet is 3mm, and the thickness of the steel wire mesh sheet is 1 mm.
The other structure is the same as embodiment 1.
Although the utility model has been described herein with reference to illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this disclosure. More specifically, various variations and modifications may be made to the component parts and/or arrangements of the subject combination arrangement within the scope of the disclosure herein. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.
Claims (8)
1. A sewage pipeline with a waterproof structure inside comprises a pipeline substrate, wherein the inner surface of the pipeline substrate is a concrete base surface, and the sewage pipeline is characterized in that the concrete base surface is provided with an acrylate spray film waterproof layer; the surface of the waterproof layer is attached with a stainless steel wire mesh as a reinforcing layer, and anticorrosion mortar is poured on the surface of the steel wire mesh as an anticorrosion wear-resistant layer; the pipeline base body is provided with a probe mounting hole, and the testing end part of the probe penetrates through the anti-corrosion wear-resistant layer and extends into a pipe cavity of the sewage pipeline.
2. The sewer pipe having a waterproof structure in its inside according to claim 1, wherein a primer layer is further provided between the acrylic spray-coated waterproof layer and the concrete base, the primer layer is an alkali-resistant blocking epoxy primer, and the acrylic spray-coated waterproof layer is formed of a silane-modified acrylic spray-coated waterproof material.
3. The sewer pipe having a waterproof structure inside according to claim 2, wherein the primer layer has a thickness of 0.2mm or more, and the acrylate spray film waterproof layer has a thickness of 2mm or more.
4. The sewer pipe with a waterproof structure in the inner part according to claim 1, wherein the pipe matrix is formed by pouring concrete or splicing shield segments.
5. The sewer pipe with the waterproof structure in the inner part according to claim 1 or 4, wherein the reinforcing layer is formed by connecting a plurality of steel wire meshes, the aperture of each steel wire mesh is 2-3mm, and the thickness of each steel wire mesh is 0.5-1.5 mm.
6. The sewer pipe having a waterproof structure therein according to claim 1, wherein the anticorrosive wear-resistant layer has a thickness of 3.5-4.5 mm.
7. The sewer pipe having a waterproof structure in its inside according to claim 1, wherein said probe comprises a pH probe, a flow rate probe and a water quality probe, said probe being protected by a PVC sleeve.
8. The sewer pipe having a waterproof structure in the inner part according to claim 5, wherein the reinforcing layer is fixed by a steel wire locking rope; the steel wire locking rope is composed of two hexagonal locking heads and a steel wire, one of the hexagonal locking heads is fixed with a reserved bolt steel bar of the shield segment or a reserved anchor rod head inside cast-in-place concrete, the other hexagonal locking head is fixed on the reinforcing layer, the fixing point is the cross point position of two stainless steels of the reinforcing layer, and the steel wire is connected with the two hexagonal locking heads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121375864.3U CN215862114U (en) | 2021-06-21 | 2021-06-21 | Sewage pipeline with waterproof structure inside |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121375864.3U CN215862114U (en) | 2021-06-21 | 2021-06-21 | Sewage pipeline with waterproof structure inside |
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| CN215862114U true CN215862114U (en) | 2022-02-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115700327A (en) * | 2022-11-08 | 2023-02-07 | 中国建筑西南设计研究院有限公司 | Anti-corrosion concrete sewage pipeline and preparation method thereof |
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2021
- 2021-06-21 CN CN202121375864.3U patent/CN215862114U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115700327A (en) * | 2022-11-08 | 2023-02-07 | 中国建筑西南设计研究院有限公司 | Anti-corrosion concrete sewage pipeline and preparation method thereof |
| CN115700327B (en) * | 2022-11-08 | 2024-06-11 | 中国建筑西南设计研究院有限公司 | Anticorrosive concrete sewage pipeline and preparation method thereof |
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