Matters needing attention in the construction of outdoor comprehensive pipe network: the outdoor comprehensive pipe network involves many specialties, so the construction should make reasonable overall arrangement for the pipeline, and comprehensively solve the pipeline layout of various specialties and the contradictions between them
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This paper briefly shares the precautions for the construction of outdoor comprehensive pipe network for the reference of friends on the site of mechanical and electrical engineering
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The “four let” principle of outdoor comprehensive pipe network construction: 1
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Pressure pipe gives way to non pressure pipe; 2
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Shallow buried pipe gives way to deep buried pipe; 3
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Single pipe gives way to double pipe; 4
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Flexible material pipe gives way to rigid material pipe; the following principles should be followed in case of contradiction in vertical position of pipeline engineering: 1
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Pressure pipe gives way to gravity flow pipe; 2
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Bendable pipe gives way to non bendable pipe; 3
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Branch pipe gives way to main pipe 5
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Power cable and telecommunication cable should be far away from each other, and should be arranged according to the principle that the power pipeline is on the east or south side of the road, and the telecommunication pipeline is on the West or north side of the road
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6
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Arrange the pipelines with similar nature and close buried depth together as far as possible
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7
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New pipelines let the original pipelines
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8
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Small construction let the large construction
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9 Many times, inconvenient cross order: 1
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All kinds of engineering pipelines should not be laid in the vertical direction
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2
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Water supply pipeline should be above the drainage pipeline
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3
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Gas pipeline should be above other pipelines (except thermal pipeline)
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4
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Power pipeline should be below the thermal pipeline and above other pipelines
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5
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Thermal pipeline should be above the combustible gas pipeline and water supply pipeline
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6
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Engineering pipeline The elevation of the intersection point should be determined according to the elevation of the drainage pipeline
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Example: the water supply pipeline should be above the drainage pipeline, the gas pipeline should be above other pipelines (except the heat pipeline), the power pipeline should be below the heat pipeline and above other pipelines, and the heat pipeline should be above the combustible gas pipeline and the water supply pipeline
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The construction sequence of the pipe network is: Surveying and setting out → foundation trench excavation → foundation pit excavation Foundation construction → pipeline installation → trench backfill: when the pipelines intersect, the minimum vertical clear distance should be met: key points of comprehensive pipe network review: consider the distance between gas pipeline and other pipelines, especially when the pipeline intersects, check whether the location of pressure regulating station affects the normal use, consider the gas pipeline backfill, check whether the location of heat exchange station is suitable, and check the pipeline elevation at the intersection of other pipelines, and determine the water supply Whether the location of pump room and main pipeline can meet the normal use of the whole park? Check the elevation of the intersection of water supply pipeline? Check the elevation of drainage pipeline and municipal main pipeline to see whether the water can be discharged
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Because the pipeline is non pressure pipeline, the slope direction of each pipeline should be carefully checked? Attention should be paid to the distance between electric power and other pipelines
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Combined with the landscape review of garden construction, the comprehensive pipe network is not only the main pipeline It is restricted by underground and above ground buildings as well as garden construction and green landscape
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In order to control the intersection of landscape structures, landscape sketches and green group planting with the municipal comprehensive pipe network, it will affect the later garden construction, and even lead to the failure of acceptance of individual municipal pipelines, thus affecting the timely delivery and normal use of the project
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In the design stage of landscape engineering, it must be closely combined with the municipal comprehensive pipe network design scheme and comprehensive pipe network diagram to audit the combined drawing, so as to ensure the normal realization of landscape effect and the normal delivery of municipal pipelines
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The key points of drawing review are as follows: 1
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Whether the important nodes such as landscape structures, sketches, important entrances and exits are away from the gas pressure regulating box, outdoor box type substation, etc.; 2
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Whether the location of large-scale group green space is away from the area with dense pipelines; 3
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In principle, the professional pipelines should not pass through the first floor courtyard, so as not to affect the future maintenance, especially control the main pipeline manhole into the courtyard; 4 No structure, including sketch, Waterscape, permanent flower bowl and enclosure, shall be allowed within 1m in vertical and horizontal direction, and no arbor, grass and large shrub shall be allowed
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There should be no structures, trees and shrubs within 1.2 meters around the outdoor gas pressure regulating box; 5
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There should be no structures, trees and shrubs in the vertical direction of water supply and fire pipelines, and pool balls and hedges can be planted
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The location of the fire pump adapter should not be designed in high terrain as far as possible, and the well chamber of the pump adapter should not be lifted or lowered according to the terrain at will; 6
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When the power pipeline crosses the green planting and structures, it can coordinate with the municipal pipeline or the electric power Bureau to adjust, but if the elevation of the pipeline out of and into the house has been confirmed and the building has been reserved, adjusting the horizontal and vertical position of the pipeline can increase the cost, which is very important The optimization scheme is determined after comparison
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Try to avoid the power tube well (room) for planting
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7
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The buried depth of water supply and drainage pipelines must be strictly controlled
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Check whether there are water supply and drainage pipelines at the lowest point of the landscape general plan, including the lowest point of green space, pool and water system, and whether the landscape design elevation can meet the buried depth requirements of water pipes
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Try to keep the water supply and drainage pipeline away from the waterscape, and no pipe well can be found in the waterscape; 8
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Because the drainage pipeline is non pressure pipe, the elevation of each municipal rainwater well must be known before the design of landscape drainage system, so as to prevent rainwater from pouring back; 9
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Generally, the drainage of garage roof is from the middle to the surrounding or both sides
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If the green space between two buildings is on the garage roof, it must be combined with that between buildings 10
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The septic tank should be located as far as possible away from the main entrance and exit, square and high terrain, so as to reduce the impact of air pollution on residents; 11
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Landscape design should take into account all kinds of unavoidable exposed boxes Line beautification or weakening treatment
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The comprehensive pipe network is an art, which needs to give consideration to each specialty, and check the elevation of each intersection
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In the field, it is necessary to adjust the elevation and line position according to the actual situation of the site
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If there is a little carelessness, the water may not be discharged and the household pipe may not be connected
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It needs the joint efforts of designers and constructors to achieve perfection..
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