CN112227468A - Freezing construction method for protecting municipal pipelines in city - Google Patents
Freezing construction method for protecting municipal pipelines in city Download PDFInfo
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- CN112227468A CN112227468A CN202011154685.7A CN202011154685A CN112227468A CN 112227468 A CN112227468 A CN 112227468A CN 202011154685 A CN202011154685 A CN 202011154685A CN 112227468 A CN112227468 A CN 112227468A
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B7/00—Water main or service pipe systems
- E03B7/09—Component parts or accessories
- E03B7/10—Devices preventing bursting of pipes by freezing
- E03B7/12—Devices preventing bursting of pipes by freezing by preventing freezing
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- Life Sciences & Earth Sciences (AREA)
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Abstract
The invention discloses a freezing construction method for protecting municipal pipelines, which comprises the following steps: the method comprises the following steps: surveying urban land according to regional division; step two: designing concrete distribution positions for excavating a water supply pipe network; step three: constructing a municipal water supply pipe network; step four: and carrying out scientific management and maintenance on the municipal water supply network. This protection city municipal pipeline's construction method that freezes, great reduction city water supply pipe, the frozen probability of pipeline appears in winter, avoid producing the problem of city water supply, the inner wall to the pipeline of excavation keeps warm and consolidates the processing, when avoiding the water pipe to burst, appear collapsing, the job schedule of salvageing is influenced, regular regularly overhauls and maintains the processing pipe network simultaneously, the convenient problem place that in time discovers the pipe network, the convenient city water supply pipe network of in time maintenance processing.
Description
Technical Field
The invention relates to the technical field of municipal pipelines, in particular to a freezing construction method for protecting municipal pipelines.
Background
Along with the development of urban construction, it is a trend that the running water supply pipeline gets into utility tunnel and lays, lay the running water pipe along original traffic tunnel in city, underpass and reach the water area, and urban municipal water supply pipeline plays a vital role to guaranteeing the stable development of city economy and the improvement of people's living standard, and the leakage rate is the important sign that reflects the water supply management level and carries out, and it is very big economic benefits and social to reduce water supply network leakage rate and deposit.
However, the existing municipal water supply pipeline in cities, particularly in winter, is easy to have the following problems, which affect the water consumption of urban residents and the like:
1. the urban water supply pipeline is easy to freeze in winter, so that the phenomenon of pipeline burst is caused, urban water supply is influenced, and urban resident water consumption is influenced;
2. the excavated pipeline is not subjected to heat preservation and reinforcement treatment, so that the phenomenon of collapse is easy to occur under the condition that a water supply pipeline bursts, and the working efficiency of emergency repair is influenced;
3. for a municipal water supply pipe network, regular and regular overhaul and maintenance treatment are not carried out, so that the problem of the pipe network is inconvenient to find in time and the use is influenced, and therefore a freezing construction method for protecting municipal pipelines in cities is provided, and the problem is solved conveniently.
Disclosure of Invention
The invention aims to provide a freezing construction method for protecting municipal pipelines in cities, which solves the problems that the existing municipal water supply pipelines in the background art are easy to have pipeline freezing in winter, so that the pipeline bursting phenomenon is caused, the urban water supply is influenced, the excavated pipelines are not subjected to heat preservation and reinforcement treatment, the urban water supply pipelines are easy to collapse under the condition that the water supply pipelines burst, the emergency repair work efficiency is influenced, regular and timed overhaul and maintenance treatment are not carried out, and the pipe networks are inconvenient to find in time.
In order to achieve the purpose, the invention provides the following technical scheme: a freezing construction method for protecting municipal pipelines in cities comprises the following steps:
the method comprises the following steps: surveying urban land according to regional division;
step two: designing concrete distribution positions for excavating a water supply pipe network;
step three: constructing a municipal water supply pipe network;
step four: and carrying out scientific management and maintenance on the municipal water supply network.
Preferably, before the urban land is surveyed in the step one, the frozen soil depth of each area of the urban land is determined by referring to municipal pipe network layout data.
Preferably, when the concrete distribution positions of the water supply pipe network are designed and excavated in the second step, the water supply pipe network is ensured to be laid at the position 550CM below the frozen soil layer.
Preferably, the urban municipal water supply pipe network construction in the third step comprises the following steps:
step 1: the construction quality of the pipe network is ensured, construction and hydraulic pressure tests are carried out according to the standard requirements, and the phenomena of dripping, seepage, leakage and water soaking are prevented;
step 2: adopting a slag heat-insulation material for the inner wall of the excavated pipeline, wherein the inner wall of the slag heat-insulation material is tightly attached to and provided with a concrete pipeline, and a well cover is arranged at the mouth of the pipeline;
and step 3: an outer heat-insulating layer is arranged on the outer wall of the PE water supply pipeline arranged in the pipeline.
Preferably, the well lid in the step 2 is made of an anti-corrosion wood material, and an insulating film body is installed and fixed on the outer surface of the lower end of the well lid.
Preferably, the material of the outer heat-insulating layer in the step 3 comprises a glass wool product and a polyethylene foam product.
Preferably, the glass wool product and the polyethylene foam product are of a double-layer hollow cylinder structure, and the inner wall of the double-layer hollow cylinder structure is tightly attached to the outer wall of the PE water supply pipeline.
Preferably, scientific management and maintenance are carried out on the municipal water supply network in the fourth step, and the method comprises the following steps;
and 4, step 4: regular inspection and maintenance are carried out, the missing well cover is early treated, and the leaked water supply pipeline is salvageed;
and 5: closing a valve of the water supply pipe network at the position of the area which does not use water for a long time, and ensuring that the water supply pipe network at the position is emptied;
step 6: for the area with less water consumption, the water flow speed in the pipeline is improved.
Preferably, in the step 6, for the area with less water consumption, the method for increasing the water flow speed in the pipeline comprises the following aspects:
the method comprises the following steps: increasing the height difference of urban municipal pipelines in areas with small water consumption, and ensuring that the horizontal line at the end of a water supply pipe is higher than the horizontal line at the end of a water using pipe;
the method 2 comprises the following steps: the speed of the water flow is realized by mechanically increasing the water pressure.
Compared with the prior art, the invention has the beneficial effects that: this protection city municipal pipeline's construction method that freezes, great reduction city water supply pipe, the frozen probability of pipeline appears in winter, avoid producing the problem of city water supply, the inner wall to the pipeline of excavation keeps warm and consolidates the processing, when avoiding the water pipe to burst, appear collapsing, the job schedule of salvageing is influenced, regular regularly overhauls and maintains the processing pipe network simultaneously, the convenient problem place that in time discovers the pipe network, the convenient city water supply pipe network of in time maintenance processing.
Drawings
FIG. 1 is a schematic view of the construction work flow of the present invention;
FIG. 2 is a schematic cross-sectional elevation view of a municipal water supply pipeline according to the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-2, the present invention provides a technical solution: a freezing construction method for protecting municipal pipelines in cities comprises the following steps:
the method comprises the following steps: surveying urban land according to regional division;
step two: designing concrete distribution positions for excavating a water supply pipe network;
step three: constructing a municipal water supply pipe network;
step four: and carrying out scientific management and maintenance on the municipal water supply network.
Furthermore, before the urban land is surveyed in the step one, the arrangement data of the municipal pipe network are referred to, and the frozen soil depth of each area of the urban land is determined, so that the urban pipe network is deviated from the frozen soil layer when being arranged, and the phenomenon that the urban pipe network is frozen in winter is prevented, and the normal running of urban water supply is influenced.
Furthermore, when the concrete distribution positions of the water supply pipe network are designed and excavated in the second step, the water supply pipe network is ensured to be laid at the position 550CM below the frozen soil layer, so that stable excavation is facilitated, a concrete pipeline is convenient to install, and the pipeline is convenient to protect.
Further, in the third step, the construction of the urban municipal water supply pipe network comprises the following steps:
step 1: the construction quality of the pipe network is ensured, construction and hydraulic pressure tests are carried out according to the standard requirements, and the phenomena of dripping, seepage, leakage and water soaking are prevented; step 2: adopting a slag heat-insulation material for the inner wall of the excavated pipeline, wherein the inner wall of the slag heat-insulation material is tightly attached to and provided with a concrete pipeline, and a well cover is arranged at the mouth of the pipeline; and step 3: the outer wall of the PE water supply pipeline arranged in the pipeline is provided with the outer heat-insulating layer, so that heat insulation of the pipeline is facilitated, the water pipe is prevented from being frozen in winter, and normal water supply is prevented from being influenced.
Further, step 2 well lid adopts anticorrosive wooden material, and the fixed insulating film body of lower extreme surface mounting of well lid, is convenient for carry out isolated processing inside and outside the pipeline, and the heat preservation of being convenient for is handled, step 3 well outer insulation layer material includes glass wool article and polyethylene foam goods, conveniently keeps warm to the pipeline and protects, facilitates the use, glass wool article and polyethylene foam goods are double-deck hollow cylinder structure, and the inner wall of this double-deck hollow cylinder structure closely laminates with the outer wall of PE water supply line, and easy to assemble is fixed, also is convenient for carry out abundant heat preservation and handles, facilitates the use.
Further, scientific management and maintenance are carried out on the municipal water supply network in the fourth step, and the method comprises the following steps: and 4, step 4: regular inspection and maintenance are carried out, the missing well cover is early treated, and the leaked water supply pipeline is salvageed; and 5: closing a valve of the water supply pipe network at the position of the area which does not use water for a long time, and ensuring that the water supply pipe network at the position is emptied; step 6: to the less region of water consumption, improve the interior velocity of water flow of pipeline, be convenient for carry out periodic inspection to city water supply pipe network to be convenient for protect, conveniently know the place of problem in time, the convenient processing of overhauing.
Furthermore, in the step 6, for the area with less water consumption, the method for increasing the water flow speed in the pipeline comprises the following aspects: the method comprises the following steps: increasing the height difference of urban municipal pipelines in areas with small water consumption, and ensuring that the horizontal line at the end of a water supply pipe is higher than the horizontal line at the end of a water using pipe; the method 2 comprises the following steps: the water pressure is increased through machinery, the speed of water flow is realized, the water flow speed is adjusted conveniently in an area with less water consumption, and the water flow speed is convenient and stable to use.
Specifically, during the freezing construction for protecting urban municipal pipelines, investigation is firstly carried out in different regional sections at a specific urban planning place, the depth sizes of frozen soil layers in different regional sections are known in detail, then design work is carried out, a specific distribution drawing of an urban water supply pipe network is drawn, and after the research and discussion of experts are passed, construction operation is carried out;
then according to a design drawing, referring to a graph shown in fig. 2, excavating soil in different areas of a city is realized, an excavated foundation pit is located at a position 550CM below a frozen soil layer, slag is fixedly installed on the inner wall of the foundation pit, then the outer surface of a concrete pipeline is tightly attached to the slag, the excavated soil foundation pit is conveniently reinforced, a certain heat preservation effect is also conveniently achieved, the phenomenon of collapse is avoided, the progress of construction is influenced, then a glass wool product and a polyethylene foam product are tightly attached to the inner wall of the concrete pipeline, finally a PE water supply pipeline is installed to penetrate through the PE water supply pipeline, the outer surface of the PE water supply pipeline is ensured to be attached to the polyethylene foam product, further heat preservation treatment is conveniently carried out on the PE water supply pipeline, the phenomenon of freezing is avoided in the water supply process, and normal water consumption of the city is influenced;
in addition, scientific management and maintenance, regular inspection and maintenance are carried out on the water supply pipe network in the city, early treatment is carried out on the lost well cover, the leaked water supply pipe is rush-repaired, the valve of the water supply pipe network at the position is closed in the area without water for a long time, the water supply pipe network at the position is ensured to be emptied, the water flow speed in the pipe is improved in the area with less water consumption, the height difference of the municipal pipeline in the area with small water consumption is increased, the water level at the end of the water supply pipe is ensured to be higher than the water level at the end of the water supply pipe or the water pressure is increased through machinery, and the water flow speed is realized;
finally, the installation firmness of the well cover of the pipeline wellhead is kept, the well cover is prevented from being lost, so that the temperature inside the pipe network is kept in winter, the pipe network is prevented from being frozen, the use is not influenced, the whole working process of the freezing construction method for protecting the urban municipal pipeline is the whole working process, and the content which is not described in detail in the specification belongs to the prior art which is known by professionals in the field.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus and method can be implemented in other ways. The apparatus embodiments described above are merely illustrative, and for example, the flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, functional modules in the embodiments of the present application may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
The functions, if implemented in the form of software functional modules and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-only memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk. It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and all the changes or substitutions should be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (9)
1. A freezing construction method for protecting municipal pipelines in cities is characterized by comprising the following steps: the freezing construction method of the urban municipal pipeline comprises the following steps:
the method comprises the following steps: surveying urban land according to regional division;
step two: designing concrete distribution positions for excavating a water supply pipe network;
step three: constructing a municipal water supply pipe network;
step four: and carrying out scientific management and maintenance on the municipal water supply network.
2. The freezing construction method for protecting municipal pipelines in cities according to claim 1, characterized in that: and before the urban land is surveyed in the step one, referring to municipal pipe network layout data to determine the frozen soil depth of each area of the urban land.
3. The freezing construction method for protecting municipal pipelines in cities according to claim 1, characterized in that: and in the second step, when the concrete distribution positions of the water supply pipe network are designed and excavated, the water supply pipe network is ensured to be laid at the position 550CM below the frozen soil layer.
4. The freezing construction method for protecting municipal pipelines in cities according to claim 1, characterized in that: the urban municipal water supply pipe network construction in the third step comprises the following steps:
step 1: the construction quality of the pipe network is ensured, construction and hydraulic pressure tests are carried out according to the standard requirements, and the phenomena of dripping, seepage, leakage and water soaking are prevented;
step 2: adopting a slag heat-insulation material for the inner wall of the excavated pipeline, wherein the inner wall of the slag heat-insulation material is tightly attached to and provided with a concrete pipeline, and a well cover is arranged at the mouth of the pipeline;
and step 3: an outer heat-insulating layer is arranged on the outer wall of the PE water supply pipeline arranged in the pipeline.
5. The freezing construction method for protecting municipal pipelines in cities according to claim 4, wherein: and in the step 2, the well cover is made of an anti-corrosion wood material, and an insulating film body is fixedly arranged on the outer surface of the lower end of the well cover.
6. The freezing construction method for protecting municipal pipelines in cities according to claim 4, wherein: and 3, the external heat-insulating layer material in the step comprises a glass wool product and a polyethylene foam product.
7. The freezing construction method for protecting municipal pipelines in cities according to claim 6, wherein: the glass wool product and the polyethylene foam product are of double-layer hollow cylinder structures, and the inner walls of the double-layer hollow cylinder structures are tightly attached to the outer wall of the PE water supply pipeline.
8. The freezing construction method for protecting municipal pipelines in cities according to claim 1, characterized in that: in the fourth step, the urban municipal water supply network is scientifically managed and maintained, and the method comprises the following steps;
and 4, step 4: regular inspection and maintenance are carried out, the missing well cover is early treated, and the leaked water supply pipeline is salvageed;
and 5: closing a valve of the water supply pipe network at the position of the area which does not use water for a long time, and ensuring that the water supply pipe network at the position is emptied;
step 6: for the area with less water consumption, the water flow speed in the pipeline is improved.
9. The freezing construction method for protecting municipal pipelines in cities according to claim 8, wherein: in the step 6, for the area with less water consumption, the method for improving the water flow speed in the pipeline comprises the following aspects:
the method comprises the following steps: increasing the height difference of urban municipal pipelines in areas with small water consumption, and ensuring that the horizontal line at the end of a water supply pipe is higher than the horizontal line at the end of a water using pipe;
the method 2 comprises the following steps: the speed of the water flow is realized by mechanically increasing the water pressure.
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| CN202011154685.7A CN112227468A (en) | 2020-10-26 | 2020-10-26 | Freezing construction method for protecting municipal pipelines in city |
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| CN202011154685.7A CN112227468A (en) | 2020-10-26 | 2020-10-26 | Freezing construction method for protecting municipal pipelines in city |
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