Tube well engineering construction process

Abstract

The invention discloses a tube well engineering construction process which comprises the following steps: S1, deepening design: performing secondary deepening design of a tube well in a main body construction stage, and determining reserved hole positioning, pre-embedded sleeve position, pipeline arrangement sequence, support form and mounting position; according to the electric well deepening design, the size of a reserved hole, a bridge fixing point and the installation position of an electric box are defined, and the construction sequence is arranged to avoid cross contamination. The method has the beneficial effects that the construction precision is systematically improved, the diameter error of the reserved hole is controlled within + / -5 mm through the secondary deepening design and the hanging through line positioning technology, and the construction efficiency is improved; the first-pass yield of pipeline installation reaches 98% or above, the process is optimized, cost is reduced, efficiency is improved, the three-stage construction method of main body reserving, structure forming and joint processing is adopted, the rework rate is reduced by 40%, and the construction period is shortened by 15-20%.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipe well engineering, in particular to a pipe well engineering construction process. BACKGROUND

[0002] The following technical defects exist in the traditional pipe well engineering construction: the positioning accuracy of the reserved hole is insufficient, resulting in large installation deviation of the pipeline in the later stage; there is a lack of systematic arrangement when the pipeline, bridge, cable and the like are cross-constructed, which is prone to rework and cross-contamination; the casing plugging process is not standardized, and the fireproof and waterproof performance does not meet the standard; the fixed point of the support is set at will, affecting the structural stability; the wall surface and ground treatment standards of the pipe well are ambiguous, affecting the visual quality and subsequent maintenance. The prior art adopts a phased independent construction mode, and the process connection is poor, especially for the key nodes such as the installation of the fire-fighting box and the processing of the pre-branch cable, which lacks standardized control, resulting in low construction efficiency and many quality hidden dangers. Based on the above problems, there may be technical means in the prior art to solve the above technical solutions, and the present application wants to provide an alternative or replacement technical means. SUMMARY

[0003] To achieve the above purpose, the present application is implemented by the following technical scheme: a pipe well engineering construction process, comprising the following steps: Step S1: deepening design In the main construction stage, the pipe well is deepened to design, and the positioning of the reserved hole, the position of the embedded casing, the arrangement order of the pipeline, the form of the support and the installation position are determined; the electrical well deepening design determines the size of the reserved hole, the fixed point of the bridge and the installation position of the electrical box, and arranges the construction sequence to avoid cross-contamination; Step S2: main reservation S2.1, pipe well casing construction: the casing diameter is 1 larger than the riser, the casing top in the floor is 20mm higher than the decorative ground, and the bottom is flush with the floor; when multiple casings are arranged in the same row, the distance between the fixed pipe card wall surface is equidistant, the reserved hole is circular and the diameter is 50mm larger than the casing, and the wire positioning is adopted; S2.2, electrical well reserved hole construction: the reserved hole of the bridge is 10mm larger than the bridge on each side, and the reserved hole of the pre-branch cable is positioned according to the drawing; the bridge and the pre-branch are coplanar near the support wall body side, the bridge is reserved, and the pre-branch is 50mm away from the wall; S2.3, support construction: the electrical well bridge and the pipe well pipeline support are set at 1.7m from the ground, and two rows of vertical cable branch supports are provided on each floor (0.5m below the top plate and 0.5m above the bottom plate); Step S3: pipe well construction S3.1, wall forming: the concrete wall surface is executed according to the standard of fair-faced concrete; the thermal insulation mortar wall surface is executed according to the thermal insulation standard; the masonry wall body is preferentially placed in the narrow well; S3.2, ceiling forming: concrete structure plate is executed according to the fair-faced concrete standard; S3.3, ground forming: secondary polishing, fine stone concrete polishing or waterproof treatment is selected according to design requirements; S3.4, identification forming: pipeline identification adopts self-adhesive vehicle paste bright film (70mm×300mm, 1.5m from the center to the ground and faces the doorway); electric well bridge identification adopts red spray paint (700mm×200mm), and pre-branch cable identification is D30mm vehicle paste; Step S4: pipe well node construction S4.1, pipeline and sleeve sealing: oil and mastic joint filling + cement sealing (30mm reserved), and rubber ring is pasted at the ceiling (without heat preservation pipeline); bridge sealing adopts rock wool / fireproof bag + cement smoothing, and angle steel fireproof mastic joint filling is adopted around; S4.2, pre-branch cable sealing: 6mm insulation board + steel bar fixing, fireproof bag joint filling + fireproof mastic sealing; S4.3, pipe well door installation: concrete precast block is added to the door side of the masonry wall, and the door frame is flush with the wall; Step S5: fire-fighting box construction S5.1, concrete wall fire-fighting box is poured with the main body, the masonry wall is built after the box is installed, the box door is flush with the wall surface; the inside of the box is painted and rust-proof, and the bolt opening is covered with a rubber ring.

[0004] In the above scheme: when the water pipe well exists in the step S2.1, the sleeve in the pipe well is 50mm higher than the decorative ground.

[0005] In the above scheme: when the fixed support is not in the shear wall in the step S2.3, a concrete precast block is arranged and the height is consistent with the fixed point.

[0006] In the above scheme: in the step S3.1.3, the pipe well enclosure wall can adopt shale hollow bricks or high-precision blocks; when shale hollow bricks are adopted for masonry, the surface layer is treated by plastering, and the curing standard is executed according to the plastering standard; when high-precision blocks are adopted for masonry, the surface layer is smoothed by high-precision block special mortar, and the curing standard is executed according to the finishing standard.

[0007] In the above scheme: in the step S4.1, when the pipeline and sleeve are sealed, 30mm is reserved at the upper part, and the lower part is flush with the sleeve.

[0008] In the above scheme: in the step S4.2, the minimum width of the insulation board is greater than 20mm of the outer diameter of the reserved hole.

[0009] In the above scheme: in the step S4.3, the installation height of the pipe well door is 200mm from the ground (when there is no requirement in the drawing).

[0010] Beneficial effects The present invention provides a pipe well engineering construction process, which has the following beneficial effects: 1. Systematically improve construction accuracy: Through secondary in-depth design and hanging line positioning technology, the reserved hole diameter error is controlled within ±5mm, and the first-time pass rate of pipeline installation reaches over 98%; 2. Process optimization to reduce costs and increase efficiency: Adopting the three-stage construction method of "main body reservation - structural forming - node processing", the rework rate is reduced by 40% and the construction period is shortened by 15-20%; 3. Breakthrough in fireproof and waterproof performance: The innovative "rock wool / fireproof bag + angle steel fireproof mortar" composite sealing process achieves a 3-hour fire resistance limit and reduces the leakage rate of the sealed area by 90%; 4. Standardized quality control: clarify the process standards for exposed concrete walls, self-adhesive vehicle stickers, etc., to ensure that the quality of pipe well molding meets the acceptance standards for high-quality projects; 5. Safety and maintenance optimization: The 1.7m standard support height combined with prefabricated block reinforcement technology improves seismic performance; the 700mm×200mm red bridge logo enables rapid equipment identification, improving operation and maintenance efficiency by 50%; 6. Innovation in space utilization: Through designs such as prioritizing the layout of forehand walls and installing pre-branched cables against the wall, the effective utilization rate of narrow manholes is increased by more than 35%; 7. Full life cycle management: Full process control from pre-embedded casing to simultaneous pouring of fire extinguisher boxes extends the service life of pipe well facilities to more than 30 years. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is the arrangement diagram of the secondary deepening design of the pipe well of the present invention.

[0012] Figure 2 This is a detailed installation diagram of the pipe well support of the present invention.

[0013] Figure 3 This is the arrangement diagram of the secondary deepening design of the electric well of the present invention.

[0014] Figure 4 This is a detailed installation diagram of the bridge support of the present invention.

[0015] Figure 5 This is the dimension diagram of the reserved hole of the present invention.

[0016] Figure 6 This is a diagram of the method of sealing the four sides of the bridge frame of the present invention.

[0017] Figure 7 This is a diagram of the bridge blocking method of the present invention.

[0018] Figure 8 This is a diagram of the method for sealing the pre-branch cable bridge of the present invention.

[0019] Figure 9 This is a node diagram for installing the pipe well door of the present invention.

[0020] Figure 10 This is a diagram showing the installation position of the pipe well door of the present invention.

[0021] Figure 11 This is a schematic diagram of the pre-embedded fire extinguisher box body of the present invention.

[0022] Figure 12 This is a schematic diagram of the installation of the fire extinguisher box of the present invention during wall construction. DETAILED DESCRIPTION

[0023] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work shall fall within the scope of protection of the present invention.

[0024] Example See also Figure 1-11 , the construction process of the pipe well project includes the following steps: Step S1: Deepen the design During the main construction of the pipe well, a secondary in-depth design is carried out to ensure that the internal installation and use functions of the pipe well can be met, and the reserved holes and the embedded casings are accurately positioned. At the same time, the secondary in-depth design drawing of the pipe well reflects the pipeline arrangement sequence, bracket installation position, bracket form, etc. The electrical well shall provide dimensions for the size of the reserved opening, the location of the bridge fixing point, the installation location of the electrical box, etc., and arrange the sequence of each construction to avoid cross contamination and construction troubles due to the narrow space of the pipe well and improper working procedures; Step S2: Main body reservation S2.1. For pipe well casing construction, the casing inside the pipe well should be one pipe size larger than the riser. The top of the casing installed in the floor slab should be 20mm above the decorative floor, and the bottom of the casing should be flush with the bottom surface of the floor slab. When multiple casings are in the same row, all casings should be at an equal distance from the wall where the pipe clamps are fixed. When the pipe well opening is reserved, the opening should be circular, with a diameter 50mm larger than the casing. Use a hanging line to determine the position of the embedded casing, and ensure that the edges of the openings of different diameters are at an equal distance from the wall where the fixtures will be installed later. S2.2. Construction of reserved holes for electric shafts. There are two types of reserved holes for electric shafts: one is reserved holes for bridges, and the other is reserved holes for pre-branch cables. The size of the reserved holes for bridges should be 10mm larger than the corresponding bridges on each side. The reserved holes for pre-branch cables should refer to the reserved hole size diagram. Multiple bridges or pre-branch cables of different models should be in the same pipe shaft. The bridges and pre-branch cables should all be on the same plane on the side close to the wall of the fixed bracket. The reserved holes for bridges should be close to the wall, and the reserved holes for pre-branch cables should be 50mm away from the wall. The reserved holes should be located according to the construction control line and reinforced appropriately. S2.3. For the construction of fixed supports for power wells and pipe wells, the power well bridge and pipe well pipe supports should be installed 1.7m above the ground. Two vertical cable branch supports should be installed on each floor. The support fixing positions should be 0.5m below the top plate and 0.5m above the bottom plate. Step S3: Tube well construction S3.1. Wall molding standards When the inner wall of the pipe shaft is made of concrete, it shall be implemented in accordance with the standard for the curing of plain concrete; When there is thermal insulation mortar in the pipe well, the thermal insulation mortar survival standard shall be followed; When the pipe shaft enclosure wall is a masonry wall, it is necessary to ensure that the pipe shaft is a forehand wall and a partition wall inside the pipe shaft. According to the actual situation, the forehand wall should be placed in the shaft where the space is relatively small and difficult to construct in the later stage; S3.2, Ceiling Forming Standards The ceilings are all made of concrete structural slabs, and are constructed according to the standards for exposed concrete. S3.3, Floor Forming Standards (Select method according to drawing requirements) The pipe shaft and the power shaft are not to be used as the building floor, but they must be subjected to secondary calendering treatment during the main concrete stage; The power well will not be used as a building floor, and the pipe well will be treated with a fine stone concrete surface layer calendered in accordance with the fine stone concrete floor standard; The pipe well and the power well are all calendered with fine stone concrete surface, in accordance with the fine stone concrete floor standard; The waterproofing of the pipe well floor shall be carried out in accordance with the design requirements; S3.4, marking molding standards Each pipeline in the pipe shaft is marked with a self-adhesive car sticker with a length of 70mm and a width of 300mm. The sticker height is 1.5 meters from the center of the mark to the ground and the direction is uniformly towards the door, making it easier for maintenance and inspection personnel to identify the pipeline; The bridge marking in the electric well is 700mm long and 200mm wide (customizable if the bridge does not meet the requirements). The characters are sprayed on the outside of the bridge with red self-spray paint. The pre-branch cable uses a self-adhesive car sticker with a diameter of D30mm and is directly pasted on the branch cable. The center of the marking is 1.5 meters from the ground. Step S4: Pipe well node construction S4.1. Seal the gap between the pipe and the casing. When the pipe passes through the floor slab, the gap between the pipe and the casing should be filled with linseed oil, leaving 30mm on the upper end. Then, add cement and an appropriate amount of water (if there is no water or a small amount of water when holding it with both hands, it will disperse when you release your hands), tamp it down and smooth it. If the outside of the pipe is not insulated and treated with anti-condensation treatment, a rubber ring should be attached to the ceiling. The inner diameter of the rubber ring should be the same as the pipe model, and the width should be 30mm. The cable gap of the bridge passing through the floor is blocked by rock wool or fireproof package, the gap between the bridge and the floor is filled and smoothed with cement added with appropriate amount of water (no water or a small amount of water is squeezed out when hands are tightly held, and the mixture will spread out when hands are loosened), and the thickness is equal to the thickness of the structure plate, and then the surrounding of the bridge is glued with stone glue and matched with angle steel, and the gap between the angle steel and the bridge is filled and smoothed with fireproof mortar. S4.2, pre-branch cable sealing, the pre-branch cable passing through the ceiling of the floor is fixed by 6mm thick insulating board and dovetail shaped 1.8mm x 25mm steel bar, the gap between the cables is filled with fireproof package or fireproof rock wool to the same thickness as the structure plate, and the upper part is covered with 6mm thick insulating board and fixed by dovetail shaped 1.8mm x 25mm steel bar, and the gap between the cable and the reserved hole is 20mm larger than the reserved hole on each side, and the gap is filled with fireproof mortar. S4.3, pipe well door installation node, when the pipe well door is installed on the masonry wall, concrete precast blocks are added on both sides of the door corresponding to the door installation reinforcement, and the upper beam of the door is preferably a concrete precast beam, and the installation of the pipe well door should ensure that the frame edge is flush with the face layer of the living wall outside the pipe well; Step S5: construction of fire fighting box S5.1, when the fire fighting box is located on the concrete wall, the box body should be poured with the wall during the main body construction, and the bottom bolt hole position of the fire fighting box is reserved for installing the pipeline reserved hole, and the secondary pouring is carried out in the later period; When the fire fighting box is located on the masonry wall, the box body should be installed first, and then the masonry is carried out, and the box body is strictly prohibited to be directly masonry without beam, and the lower pipe of the fire fighting box passing through the wall is poured with fine stone concrete; When the fire fighting box is installed, the edge of the front surface of the box body should be flush with the wall surface, so as to ensure that the fire fighting box door is fixed firmly and closely adheres to the wall surface without gap; Fire fighting box internal treatment, before hanging the water belt, the rusted and faded box body in the fire fighting box is treated by repainting, and the base treatment is ensured to be clean before painting, and the painting color is the same as the original color of the box body; Fire fighting box bolt hole treatment, the gap between the fire hydrant branch valve and the fire fighting box should be pasted and covered with rubber ring, and if the rubber ring is cut and pasted, the opening should be placed on the inside of the pipeline to ensure the beauty.

[0025] Step S2.1, when the water pipe well exists, the sleeve in the pipe well is 50mm higher than the decorative ground.

[0026] Step S2.3, when the fixed support is not on the shear wall, a concrete precast block should be set, and the height is consistent with the future fixed point position.

[0027] Step S3.1.3, the pipe shaft retaining wall can be made of shale hollow bricks or high-precision blocks. When shale hollow bricks are used for masonry, the surface layer is plastered and the survival standard is implemented according to the plastering standard. When high-precision blocks are used for masonry, the surface layer is scraped flat with special mortar for high-precision blocks and the survival standard is implemented according to the painting standard.

[0028] Step S4.1: seal the gap between the pipe and the casing. When the pipe passes through the floor slab, the gap between the pipe and the casing should be filled with linseed oil. The upper part of the pipe should be 30mm away from the edge of the casing, and the lower part should be flush with the casing.

[0029] Step S4.2: The minimum width of the thick insulating yoke plate is 20 mm greater than the outer diameter of the reserved hole.

[0030] Step S4.3, when there is no requirement in the drawings, the pipe well door should be 200 mm from the ground.

[0031] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. The construction process of the pipe well engineering is characterized by: The following steps are involved: Step S1: Deepen the design During the main construction phase, a secondary in-depth design of the pipe well is conducted to clarify the location of the reserved hole, the position of the embedded casing, the arrangement sequence of the pipeline, the type of bracket and the installation location. The in-depth design of the electrical well specifies the size of the reserved hole, the fixing point of the bridge and the installation location of the electrical box, and arranges the construction sequence to avoid cross contamination. Step S2: Main body reservation S2.

1. Pipe well casing construction: The casing diameter should be one size larger than the riser. The top of the casing in the floor slab should be 20mm above the decorative floor, and the bottom should be flush with the floor slab. When multiple casings are arranged in a row, they should be equidistant from the wall where the pipe clamps are fixed. The reserved opening should be circular and 50mm larger in diameter than the casing. Use a hanging line for positioning. S2.

2. Construction of reserved holes for the electric well: The reserved holes for the bridge should be 10mm larger on each side than the bridge. The reserved holes for the pre-branch cables should be located according to the diagram. The bridge and pre-branch cables should be coplanar on the wall side close to the bracket. The bridge should be close to the wall and the pre-branch cables should be 50mm away from the wall. S2.3, Support construction: The electrical well bridge and pipe well pipe supports are set 1.7m above the ground, and two vertical cable branch supports are set on each floor (0.5m from the top plate and 0.5m from the bottom plate); Step S3: Tube well construction S3.1, Wall forming: Concrete wall shall be constructed in accordance with the standard of plain concrete; thermal insulation mortar wall shall be constructed in accordance with the thermal insulation standard; the main wall of the masonry wall shall be placed in the narrow well first; S3.2, Ceiling Forming: Concrete structural slabs shall be constructed in accordance with the standards for plain concrete; S3.3 Floor Forming: Select secondary calendering, fine stone concrete calendering or waterproofing treatment according to design requirements; S3.

4. Marking Forming: Pipeline markings are made with self-adhesive car stickers (70mm x 300mm, 1.5m from the ground, facing the door); electrical well bridge markings are made with red spray paint (700mm x 200mm); pre-branch cable markings are made with D30mm car stickers; Step S4: Pipe well node construction S4.

1. Pipe and casing sealing: Use hemp caulking + cement sealing (reserving 30mm), and apply rubber rings to the ceiling (no insulation pipes); bridge sealing uses rock wool / fireproof bag + cement smoothing, and fireproof mortar filling of angle steel around the perimeter; S4.

2. Pre-branch cable sealing: 6mm insulating yoke plate + steel bar fixing, fireproof packing filling + fireproof putty sealing; S4.3, Pipe shaft door installation: Build the wall and add precast concrete blocks on the door side, making sure the door frame is flush with the wall; Step S5: Fire extinguisher box construction S5.

1. The fire extinguisher box on the concrete wall is cast along with the main structure. The box should be installed first and then the masonry wall should be built. The box door should be flush with the wall surface. The inside of the box should be painted to prevent rust, and the bolt opening should be covered with a rubber ring.

2. The pipe well engineering construction process according to claim 1, characterized in that: When a water pipe well exists in step S2.1, the casing in the pipe well is 50 mm higher than the decorative floor.

3. The pipe well engineering construction process according to claim 1, characterized in that: In step S2.3, when the fixing bracket is not on the shear wall, a prefabricated concrete block is set with a height consistent with the fixing point.

4. The pipe well engineering construction process according to claim 1, characterized in that: In the step S3.1.3, the pipe shaft enclosure wall can be made of shale hollow bricks or high-precision blocks. When shale hollow bricks are used for masonry, the surface layer is plastered and the survival standard is implemented according to the plastering standard. When high-precision blocks are used for masonry, the surface layer is scraped flat with special mortar for high-precision blocks and the survival standard is implemented according to the painting standard.

5. The pipe well engineering construction process according to claim 1, characterized in that: In step S4.1, when the pipe and the casing are sealed, 30 mm is reserved at the upper part and the lower part is flush with the casing.

6. The pipe well engineering construction process according to claim 1, characterized in that: In step S4.2, the minimum width of the insulating yoke plate is greater than the outer diameter of the reserved hole by 20 mm.

7. The pipe well engineering construction process according to claim 1, characterized in that: In step S4.3, the pipe well door is installed at a height of 200 mm from the ground (unless otherwise required by the drawing).

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