The pipe is sealed to the airbag to solve the waterproofing at one time, and the maintenance is no longer repeated . [Zhuzhou complete technology factory direct free installation program] In the 21st century, the level of urban modernization construction is developing at a rapid pace, and the construction of integrated pipe corridors has sprung up all over the country. At the same time, the quality and safety of integrated pipe gallery construction has become more and more important. While attaching importance to the quality of the construction of underground pipe corridors, complete scientific experts pointed out that in the construction of integrated pipe corridors, the seepage of underground pipe corridors needs to be paid attention to, which directly affects the quality of the project and the maintenance work in the later period. Among them, the waterproof construction process and on-site management chaos have become one of the main reasons for leakage of underground pipe corridors. The construction of underground integrated pipe corridors is in urgent need of “wearing†waterproof “outerwearâ€. Pipeline sealing airbags solve waterproofing at one time. Let's take a closer look at the waterproof sealing of cable ducts.
Underground pipe gallery leaks seriously
Underground space is seriously plagued by leakage
The inevitable mission of waterproof engineering is to prevent the pervasive environment water from infiltrating into the reinforced concrete multi-phase porous system, avoiding corrosion of steel bars, corrosion of concrete, prolonging structural durability, and protecting the main structure. If the underground pipe gallery wants to give full play to its role in urban construction and operation, it is essential to be waterproof and ensure safety.
It is understood that there are usually three ways to waterproof the underground pipe gallery. One is the open cut method, which adopts the structure of self-waterproofing and fully waterproofing. Or use grading foundation pit construction, or enclosing structure, in the case of sufficient construction conditions of the foundation pit, the outer wall should be paved with waterproof layer by external anti-adhesive method; second, the dark excavation method, except that the structure is self-waterproof, A pre-plated waterproofing membrane, a waterproof coating or a plastic waterproof board is formed between the initial support and the secondary lining to form a gasket waterproofing system, and the water in the surrounding rock is separated from the secondary lining by an impervious waterproof layer; The third is the prefabrication assembly method. The main pipe adopts self-waterproof and external waterproof design, that is, the prefabricated main pipe is coated with waterproof coating, and the core is the prefabricated pipe joints.
The comprehensive pipe corridor as a city underground facility arterial project has long-term strategic significance for urban construction, but the problem of water leakage has always been a common quality problem that plagues underground construction projects. According to experts, from the current construction of some of the projects, the main problems of the deformation joints, construction joints, and wall pipe leakage in the underground pipe gallery have not been completely solved, which once became a troubled underground pipe gallery construction. And the problem of repair and remediation.
Underground pipe porches usually cover high-voltage cables, weak electrical cables, and should be separately set up. If there is wet or water seepage in the integrated pipe gallery structure, it means that the integrated pipe gallery is wet, which may cause corrosion of high-voltage cables and weak electric cable connectors and fire of high-voltage cables, which seriously affects the normal operation of the equipment at the load end. And engineering safety operations.
In addition, concrete is subject to groundwater erosion in underground engineering and its durability is affected. At present, groundwater in China, especially shallow groundwater, is seriously polluted, and waterproof concrete is not absolutely impervious. According to the measurement, the permeability parameter of waterproof concrete with impermeability rating of P8 is (5~8)×10-10cm/s. Therefore, the groundwater damage to the concrete structure and steel bars of the underground pipe gallery project has become a problem that cannot be ignored. Then, is the pipe blocking the airbag to solve the waterproof problem at one time and avoid repeated maintenance?
To prevent the pipeline from being soaked by water leakage for a long time, solving the waterproof problem is one of the technical problems that must be considered in the construction of the integrated pipe gallery. It can effectively solve the waterproof problem and ensure the construction quality of the integrated pipe gallery. It can also fundamentally reduce the safety hazard and reduce The maintenance cost of the operation in the later period will extend the service life of the pipe gallery.
The waterproof level is determined according to the pipeline type of the specific pipe gallery. If there are high-voltage cables, weak electricity, communication transmission and other important lines entering the pipe gallery, the moisture and leakage will easily cause corrosion and sparking of the connecting parts, and the waterproof layer should use one. Waterproof, and these lines should also be set up separately.
“Construction should also consider the groundwater and surface water conditions in the city where the pipe gallery is located. For example, if the groundwater level is very low, it should be waterproofed first. If the groundwater is rich, use the first-grade waterproof. It is safe." Some experts said, "At present, the secondary waterproofing in the "Technical Specifications for Urban Integrated Pipe Gallery Engineering" should be adjusted to be equal to or greater than two, which should be more appropriate."
Underground pipe gallery is not a new thing, waterproof engineering is also a commonplace. However, only when it is really waterproof, can the underground pipe gallery become a century-old project and promote the healthy and orderly development of the whole city. More importantly, the waterproof industry should also take advantage of the rare opportunities brought about by the construction of underground pipe corridors, and intensify innovation and regulation in materials, processes and construction, and promote the transformation and development of the whole industry.
Waterproof seals for underground cable ducts, high-voltage cables, weak currents, and communication transmission pipelines are now more commonly used in WQBZ-type inflatable cable ducts to seal airbags, effectively preventing stagnant water, sediment, pests, and harmful gases from entering the pipeline.
The national patent inflatable pipe waterproof sealing product produced by Hunan Zhuzhou Complete Technology Co., Ltd., the core component of the product, "inflatable pipe plug", is a sealed air bag made of polymer aluminum foil composite material, which realizes the hole of the pipe by the principle of inflation expansion. Blocking effect. Waterproof rubber strips are attached on both sides of the inflatable pipe plug. When the product is inflated to a pressure of 2.6-2.8 kg, the gap between the pipe, the inflatable pipe plug and the cable is well filled to achieve a complete sealing effect. The inside of the inflation tube of the inflatable tube plug is provided with a silicone material. When the inflation tube is removed and the inflation tube is removed, the self-filling property of the silicone material can block the inflation hole to ensure that the gas does not leak.
The application features of inflatable cable duct sealing airbag products are as follows:
1. It can cope with various plugging requirements such as empty pipes and multiple cables passing through a single pipe.
2, the sealing effect is good, after blocking at both ends, it can completely isolate the water, sand, harmful gas, and pests in the pipeline, and keep it dry and clean.
3, the installation conditions are low, a variety of gas sources to choose; fast installation, single person can complete the operation; post-maintenance removal is simple, does not damage the cable and pipe wall.
4. After the correct installation is in place, the service life can be up to 20 years without human damage.
5, wide working temperature difference (-15 ° C -60 ° C), resistance to groundwater acid and alkali corrosion ability, can withstand cable axial stretching and low frequency vibration.
6. Scope of application: It is mainly used for power pipe, urban construction, urban rail transit, underground pipe network cable pipe hole blocking, commercial residential community underground soil wall piercing through wall hole; suitable for plastic, steel, cement and other hard materials The pipe; the hole is suitable for circular or elliptical.
7, the product has a certain flame retardant effect.
8, according to customer needs can achieve secondary installation and utilization.
If the urban power underground pipe network adopts the inflatable pipe waterproof sealing product as early as possible, it can effectively improve the cable protection level and the operation safety factor in the pipeline, and avoid the large amount of funds and manpower to be repeatedly dredged and dredged later. Does not affect the subsequent cable laying and replacement.
Tips: This article is a network reprinted text, from the waterproof enterprise network. Power Pipeline Sealing Expert - Zhuzhou City Complete Technology Co., Ltd. aims to spread more industry information and invade!
Zhuzhou City Complete Technology Co., Ltd. sincerely provides technical solutions for the following related problems - pipe sealing airbag products, cable ducts, cable duct sealing, cable duct sealing, cable duct waterproofing, pipeline sealing, cable duct sealing and waterproofing, etc.
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