CN109252544B

CN109252544B - Four cabin utility tunnel systems

Info

Publication number: CN109252544B
Application number: CN201811162132.9A
Authority: CN
Inventors: 卢二侠; 吴嘉佳; 张思瑜; 李鹏; 蓝华; 史健波; 李博; 李晓; 欧秋杰; 谢惠静; 杨理广; 周焱; 董岩岩
Original assignee: Guangxi Zhuang Autonomous Region Urban-Rural Planning Design Institute
Current assignee: Guangxi Zhuang Autonomous Region Urban-Rural Planning Design Institute
Priority date: 2018-09-30
Filing date: 2018-09-30
Publication date: 2023-12-12
Anticipated expiration: 2038-09-30
Also published as: CN109252544A

Abstract

The invention provides a four-cabin comprehensive pipe gallery system which comprises a pipe gallery main line formed by connecting a standard section and an inverted siphon section, wherein four first cabins are respectively arranged in the standard section and the inverted siphon section in a separated mode through vertical walls and are respectively used as an electric cabin, a comprehensive cabin, a sewage cabin and a fuel gas cabin; the inverted siphon section comprises a connecting part and two inclined parts, wherein the opposite ends of the connecting part are respectively connected with one ends of the two inclined parts, and each inclined part gradually inclines downwards along the direction facing the connecting part so as to enable a first cabin in the inclined part to sink; a water collecting pit is concavely arranged at the bottom of the first cabin in the connecting part, and protruding hawks are arranged on the bottom wall of the connecting part and the bottom wall of the standard section. This four cabin utility tunnel systems is equipped with protruding falcon on the diapire of piping lane mainline, through protruding falcon embedding earth to reach the purpose that prevents piping lane gliding removal under the effect of gravity, improve piping lane stability.

Description

Four cabin utility tunnel systems

Technical Field

The invention relates to the technical field of comprehensive pipe racks, in particular to a four-cabin comprehensive pipe rack system.

Background

The utility tunnel is an underground urban pipeline utility tunnel, namely a tunnel space is built underground in the city, various engineering pipelines such as electric power, communication, fuel gas, heat supply, water supply and drainage are integrated, a special access opening, a lifting opening and a monitoring system are arranged, unified planning, unified design, unified construction and management are implemented, and the utility tunnel is an important infrastructure and a life line for guaranteeing urban operation. The utility tunnel comprises a concrete pipe tunnel which is poured in the initial stage and buried underground and various pipelines arranged in the pipe tunnel, wherein a plurality of partition walls are arranged in the concrete pipe tunnel to divide the concrete pipe tunnel into a plurality of cabins, the cabins comprise a high-voltage electric power cabin for accommodating 110KV or 220KV electric power pipelines, a utility cabin for accommodating 10KV electric power pipelines, communication pipelines and water supply pipelines, a gas cabin for accommodating gas pipelines, a sewage cabin for accommodating sewage pipelines and the like.

The utility tunnel is usually spliced by standard section, combination node, cross node structure, tip well etc. and forms, and the utility tunnel is for dodging important structures or under-passing river when vertical arrangement, still needs to do the setting of sinking and falling the rainbow, and this sinking and falling rainbow part forms the rainbow section now. The utility tunnel still has following problem in the in-service use: 1. after the comprehensive pipe rack is used for a long time, the comprehensive pipe rack can slide and move under the action of gravity, so that the stability is poor, and the normal use of the comprehensive pipe rack is affected; 2. each cabin is divided into a plurality of fireproof subareas, and each fireproof subarea is kept independent for ensuring safety, so that each fireproof subarea is usually provided with a ventilating shaft independently, more ventilating shafts are arranged, and the ventilating shafts are arranged outside the ground surface in a protruding manner, so that urban landscapes and urban volumes are affected; the ventilation shaft is more, and the construction degree of difficulty is great, and the engineering volume is great, and the cost is higher, and is unfavorable for maintenance and operation management in later stage.

Disclosure of Invention

In order to solve the problems, the four-cabin comprehensive pipe rack system capable of preventing the pipe rack from sliding downwards under the action of gravity is provided.

The utility model provides a four cabin utility tunnel systems, includes the pipe gallery mainline that constitutes through standard section and the mutual connection of falling rainbow section, the inside of standard section and the inside of falling rainbow section all is equipped with four first cabins through perpendicular wall separation, and these four first cabins are used as electric power cabin, utility cabin, sewage cabin and gas cabin respectively; the inverted siphon section comprises a connecting part and two inclined parts, wherein the opposite ends of the connecting part are respectively connected with one ends of the two inclined parts, and each inclined part gradually inclines downwards along the direction towards the connecting part so as to enable a first cabin in the inclined part to sink; a water collecting pit is concavely arranged at the bottom of the first cabin in the connecting part; a step is arranged in the first cabin positioned in the inclined part so as to facilitate a user to walk in the first cabin of the connecting part; and protruding haws are arranged on the bottom wall of the connecting part and the bottom wall of the standard section.

Further, the pipe gallery main line further comprises at least one combination node, wherein the combination node comprises a pipe gallery main body and a conversion layer connected above the pipe gallery main body; four second cabins are arranged in the pipe gallery main body at intervals corresponding to the first cabins, the four second cabins are respectively used as an electric power cabin, a comprehensive cabin, a sewage cabin and a gas cabin, and the electric power cabin, the comprehensive cabin and the sewage cabin in the pipe gallery main body are divided into a first fireproof partition and a second fireproof partition through a firewall; the pipe gallery main body comprises a pipe gallery bottom plate, a pipe gallery top plate and a pipe gallery side wall connecting the pipe gallery bottom plate and the pipe gallery top plate; the conversion layer comprises a conversion layer top plate and conversion layer side walls which are connected around the conversion layer top plate in a surrounding mode, the conversion layer side walls are connected with the pipe gallery top plate, escape shafts, ventilation shafts and feeding ports are arranged on the conversion layer top plate at intervals, well covers are arranged at ports of the escape shafts, and rain and snow prevention shutters are arranged on the peripheral walls of the ventilation shafts; a cover plate is covered at the feed inlet; the conversion layer is divided into an equipment room, a ventilation conversion room and a feeding conversion room by a fireproof partition wall, the equipment room is communicated with the escape well, the ventilation conversion layer is communicated with the ventilation well, and the feeding conversion layer is communicated with the feeding port; the first fireproof subareas are communicated with the equipment through escape openings which are communicated with the pipe gallery top plate, fireproof subarea climbing ladders are arranged in each first fireproof subarea corresponding to the escape openings, equipment climbing ladders are arranged in the equipment corresponding to the escape wells, and an escape opening fireproof cover plate which can be opened and closed is arranged at each escape opening; the first fireproof partition and the second fireproof partition are communicated with the ventilation conversion room through ventilation openings which are arranged on the pipe gallery top plate in a penetrating mode, and remote control electric smoke prevention and fire prevention valves are arranged at the ventilation openings; the feeding conversion layer is divided into an electric power cabin feeding room, a comprehensive cabin feeding room and a sewage cabin feeding room through two fireproof rolling doors, the electric power cabin feeding room is communicated with the electric power cabin of the pipe gallery main body through an electric power cabin feeding port, the comprehensive cabin feeding room is communicated with the comprehensive cabin of the pipe gallery main body through a comprehensive cabin feeding port, and the sewage cabin feeding room is communicated with the sewage cabin of the pipe gallery main body through a sewage cabin feeding port; and the electric power cabin material opening, the comprehensive cabin material opening and the sewage cabin material opening are all provided with a material opening fireproof cover plate which can be opened and closed.

Further, a fan is also installed at the ventilation opening.

Further, a normally closed fireproof door is arranged on a fireproof partition wall separating the equipment room from the ventilation conversion room, and a fireproof rolling door is arranged on the fireproof partition wall separating the ventilation conversion room from the material feeding conversion room.

Further, two step parts are arranged on the side wall surrounding the feeding hole at intervals along the height direction, the cover plate comprises a prefabricated cover plate and a steel cover plate, and the periphery of the steel cover plate is supported on one step part and is connected with the step part through a bolt; the periphery of the prefabricated cover plate is supported on the other step part and is positioned above the steel cover plate.

Further, the prefabricated cover plate is formed by splicing a plurality of prefabricated cover bodies, the joint of every two adjacent prefabricated cover bodies is sealed through polysulfide sealant, and the peripheral wall of the prefabricated cover plate is sealed with the side wall of the corresponding step part through polysulfide sealant.

Further, a gasket is arranged on the step part connected with the steel cover plate, the periphery of the steel cover plate is supported on the gasket, a rubber belt is further clamped between the steel cover plate and the gasket, the steel cover plate, the rubber belt and the gasket are sequentially penetrated through the screw rod of the bolt, the gasket stretches into the top plate of the conversion layer, and two nuts on the screw rod of the bolt are respectively propped against the gasket and the steel cover plate.

Further, deformation joint segmentation is adopted in the longitudinal direction of the pipe gallery main line.

Further, the four-cabin comprehensive pipe rack system comprises a plurality of pipe rack main lines, and a cross node structure is arranged at the cross position of the pipe rack main lines in at least two directions.

By adopting the technical scheme, the invention has the following beneficial effects:

1. above-mentioned four cabin utility tunnel systems, it is equipped with protruding falcon on the diapire of piping lane mainline, through protruding falcon embedding earth to reach the purpose that prevents piping lane gliding removal under the effect of gravity, improve piping lane stability. The main line of the pipe gallery is also provided with an inverted siphon section so as to avoid important structures or downflow rivers. The inverted siphon section comprises two downward inclined parts, a space for avoiding important structures or rivers can be formed between the two inclined parts, and accumulated water in the pipe gallery can be guided into the water collecting pit to be collected through the two inclined parts.

2. Above-mentioned four cabin utility tunnel systems, every vent department all is equipped with far control electronic smoke protection fire damper, can play isolated a plurality of fire prevention subregions through this far control electronic smoke protection fire damper, ensure the independent effect of a plurality of fire prevention subregions, thereby make six total fire prevention subregions that electric power cabin in the composite node, the utility cabin, the sewage cabin forms can share a ventilation conversion layer and ventilation shaft, and need not every fire prevention subregion and be equipped with the ventilation shaft alone, the quantity of the ventilation shaft that has significantly reduced to expose outside the earth's surface, not only can reduce its influence to city view and city appearance, can also reduce construction degree of difficulty and cost, do benefit to overhaul and operation management in later stage.

3. According to the four-cabin comprehensive pipe rack system, the electric power cabin, the comprehensive cabin and the sewage cabin in the combined node are isolated through the fire wall to form the first fireproof partition and the second fireproof partition, and the electric power cabin feeding room, the comprehensive cabin feeding room and the sewage cabin feeding room which correspond to the three second fireproof partitions respectively are isolated through the fireproof rolling shutter door in the feeding conversion layer, so that the fireproof partition independence is better, and the safety performance of the four-cabin comprehensive pipe rack system is further improved.

4. The four-cabin comprehensive pipe rack system is characterized in that a steel cover plate is arranged at the feeding port and connected with the top plate of the conversion layer through bolts, so that the four-cabin comprehensive pipe rack system has a certain anti-theft effect; the outside of steel apron is equipped with prefabricated apron, and prefabricated apron adopts a plurality of prefabricated lid concatenation to form, and the junction of two adjacent prefabricated lids is sealed through polysulfide sealant, seal through polysulfide sealant between the lateral wall of prefabricated apron's week wall and corresponding step portion, can improve the leakproofness of feed inlet department, play waterproof effect.

Drawings

Fig. 1 is a schematic structural diagram of a four-cabin utility tunnel system in a first embodiment of the present invention.

FIG. 2 is an elevational schematic view of a portion of a standard segment and inverted siphon segment of the four-deck utility tunnel system of FIG. 1.

Fig. 3 is a schematic top view of fig. 2.

Fig. 4 is a schematic cross-sectional view taken along line A-A of fig. 2.

Fig. 5 is a schematic cross-sectional view of fig. 2 along line B-B.

FIG. 6 is a schematic top view of a composite node in the four-compartment utility tunnel system of FIG. 1.

FIG. 7 is a schematic top view of a tube rack roof of a combination node in the four-compartment utility tube rack system of FIG. 1.

FIG. 8 is a schematic top view of a piping lane bottom plate of a combination node in the four-compartment utility piping lane system of FIG. 1.

FIG. 9 is a schematic cross-sectional view of the composite node of FIG. 6 taken along line C-C.

FIG. 10 is a schematic cross-sectional view of the composite node of FIG. 6 taken along line D-D.

FIG. 11 is a schematic cross-sectional view of the composite node of FIG. 6 taken along line E-E.

Fig. 12 is an enlarged schematic view of the combined node at I of fig. 9.

Fig. 13 is an enlarged schematic view of the combined node at II of fig. 9.

Fig. 14 is a schematic cross-sectional view of a standard segment of a four-deck utility tunnel system in accordance with a second embodiment of the invention.

Fig. 15 is a partial enlarged view at III in fig. 14.

Fig. 16 is a partial enlarged view at IV in fig. 14.

Fig. 17 is a schematic structural view of the wet-laid waterproof roll of fig. 14.

Description of main reference numerals:

1-piping lane main line, 2-standard section, 3-inverted siphon section, 4-combination node, 5-first cabin, 6-connection section, 7-incline section, 8-sump, 9-step, 10-tendril, 11-piping lane main body, 12-transfer layer, 13-piping lane bottom plate, 14-piping lane top plate, 15-piping lane side wall, 16-firewall, 17-second cabin, 18,82-electric power cabin, 19,83-utility cabin, 20, 84-sewage cabin, 21,85-gas cabin, 22-first fire partition, 23-second fire partition, 24-transfer layer top plate, 25-transfer layer side wall, 26-escape well, 27-ventilation well, 28-feed opening, 29-well lid, 30-snow and rain shutter, 31-insect prevention and theft prevention net 32-cover plate, 33-step part, 34-steel cover plate, 35-prefabricated cover plate, 36-bolt, 37-gasket, 38-rubber belt, 39-prefabricated cover body, 40-polysulfide sealant, 41-equipment room, 42-ventilation conversion room, 43-charging conversion room, 44-escape opening, 451-fireproof partition cat ladder, 452-equipment room cat ladder, 46-vent, 47-remote control electric smoke-proof fire-proof valve, 48-fan, 49-fireproof roller shutter door, 50-electric cabin charging room, 51-comprehensive cabin charging room, 52-sewage cabin charging room, 53-electric cabin charging opening, 54-comprehensive cabin charging opening, 55-sewage cabin charging opening, 57-deformation joint, 58-cross node structure, 59-box top plate, 60-wet laid waterproof coiled material, 61-bottom isolation membrane layer, 62-material layer, 63-adhesive layer, 64-top isolation membrane layer, 70-root-penetration-resistant waterproof coiled material, 71-fine stone concrete protective layer, 72-box bottom plate, 73-concrete cushion layer, 74-box side wall, 75-sintered porous brick masonry, 76-plain concrete, 77-additional coiled material, 78-construction joint, 80-reinforcing layer, 81-galvanized steel plate water stop, 90-gas cabin ventilation escape structure, 91-grid cover plate, 92-hidden column, 93-normally closed fireproof door, 94-water suction pump, 95-fireproof partition wall and 96-cement mortar chamfer.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When a component is considered to be "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and/or" as used herein includes any and all combinations of one or more of the associated listed items.

Example 1

Referring to fig. 1 to 5, embodiment 1 of the present invention provides a four-cabin utility tunnel system, which includes a plurality of standard segments 2, at least one inverted siphon segment 3 and at least one combination node 4, wherein the standard segments 2, the at least one inverted siphon segment 3 and the at least one combination node 4 are mutually connected to form a main tunnel line 1. The inverted siphon section 3 is used for avoiding important structures such as pipelines or downriver. Four first cabins 5 are arranged in the standard section 2 and the inverted siphon section 3, and the four first cabins 5 are respectively used as an electric cabin 18, a comprehensive cabin 19, a sewage cabin 20 and a gas cabin 21. Wherein, electric power pipeline and communication pipeline can be held to the electric power cabin 18, and comprehensive cabin 19 can be held to set up water supply pipe, regeneration water pipe, heating power pipeline and communication pipeline, and gas tank 21 can be held to set up gas pipeline, and sewage cabin 20 can be held the water pipe. When the four-deck utility tunnel system includes a plurality of tunnel main lines 1, the intersection of the tunnel main lines 1 in at least two directions is provided with an intersection node structure 58. The crossover node structure 58 is of the prior art, and for example, the utility tunnel crossover node structure in chinese patent CN103195083B may be adopted, and will not be described here.

The standard section 2 and the inverted siphon section 3 are both in a cube box shape with two open ends and are formed by connecting a box top plate 59, a box bottom plate 72 and a box side wall 74 with each other. The inside of the standard section 2 and the inside of the inverted siphon section 3 are separated by vertical walls to form four first cabins 5, and the four first cabins 5 are arranged side by side along the width direction of the pipe gallery main line 1.

In this embodiment, opposite ends of the inverted siphon section 3 are connected to two standard sections 2, respectively. The inverted siphon section 3 comprises a connecting part 6 and two inclined parts 7, wherein the opposite ends of the connecting part 6 are respectively connected with one ends of the two inclined parts 7, and the other ends of the two inclined parts 7 are respectively connected with the two standard sections 2. Each inclined portion 7 is gradually inclined downward in a direction toward the connection portion 6 so that the first compartment 5 within the inclined portion 7 is submerged; a sump 8 is recessed in the bottom of the first compartment 5 in the connection 6 for collecting water in the pipe gallery. Sump 8 is also connected to a water pump 94 to drain the accumulated water in sump 8 out of the pipe gallery. Specifically, in the present embodiment, the grid cover plate 91 is installed at the opening of the sump 8, and the grid cover plate 91 is preferably a galvanized steel grid cover plate so as to have a better corrosion resistance. A pipe mounting opening can be formed in the side wall 74 or the top plate 59 of the box body which encloses the standard section 2, the water pump 94 is arranged on the grid cover plate 91 of the water collection pit 8, one end of a pipe connected with the water pump 94 extends into the water collection pit 8 from the grid of the grid cover plate 91, and the other end extends out of the pipe gallery through the pipe mounting opening. When the suction pump 94 is operated, water in the sump 8 is discharged from the pipe gallery. Preferably, sealing devices such as sealing rings are arranged at the joint of the pipeline and the pipeline mounting port so as to play a role in sealing and waterproofing. A water level gauge can also be arranged in the water pit 8 and is connected with a water suction pump 94. The water level gauge is used for detecting the water level in the water pit 8, and when the water level in the water pit 8 is higher than a preset water level value, the water level gauge transmits a signal to the water pump 94, and the water pump 94 starts to operate. In this way, the water pump 94 can be controlled to pump water automatically, and water in the water pit 8 is prevented from overflowing. A step 9 is provided in the first compartment 5 in the inclined portion 7 to facilitate the user's walking in the first compartment 5 of the connecting portion 6. The protruding falcon 10 is all provided with on the diapire outside of connecting portion 6 and the diapire outside of standard section 2, imbeds earth through protruding falcon 10 to reach the purpose that prevents piping lane overall structure and slide down and remove under the effect of gravity, improve piping lane stability.

Referring also to fig. 6-11, the composite node 4 includes a piping lane body 11 and a conversion layer 12 attached above the piping lane body 11. The pipe rack main body 11 comprises a pipe rack bottom plate 13, a pipe rack top plate 14 and a pipe rack side wall 15 connecting the pipe rack bottom plate 13 and the pipe rack top plate 14, and the pipe rack bottom plate 13, the pipe rack top plate 14 and the pipe rack top plate 14 jointly enclose a cuboid box-shaped structure with two open ends. Four second cabins 17 are provided in the piping lane main body 11 at intervals corresponding to the first cabins 5, and the four second cabins 17 serve as an electric power cabin 82, a utility cabin 83, a sewage cabin 84, and a gas cabin 85, respectively. The four second chambers 17 are arranged side by side in the width direction of the pipe lane main line 1. The electric power cabin 82, the utility cabin 83 and the sewage cabin 84 in the pipe gallery main body 11 are all divided into a first fireproof partition 22 and a second fireproof partition 23 by the firewall 16, and in this embodiment, the first fireproof partition 22 and the second fireproof partition 23 are disposed at intervals along the length direction of the pipe gallery main line 1. In the present embodiment, a normally closed fire door 93 is provided on the fire wall 16 that blocks the first fire partition 22 and the second fire partition 23.

The transfer layer 12 includes a transfer layer top plate 24 and transfer layer side walls 25 surrounding the transfer layer top plate 24, and a side of the transfer layer side walls 25 remote from the transfer layer top plate 24 is connected to the tube rack top plate 14. Escape wells 26, ventilation shafts 27 and feeding openings 28 are arranged on the conversion layer top plate 24 at intervals. A manhole cover 29 is arranged at the port of the escape well 26. The well cover 29 of the escape well 26 is preferably an automatic hydraulic well cover capable of being remotely controlled, which can prevent unauthorized personnel from stealing the well cover 29 or entering the pipe gallery from the escape well 26, and can enable personnel in the pipe gallery to easily open the well cover 29 so as to facilitate in-out and escape. The structure and principle of the automatic hydraulic well lid capable of being remotely controlled belong to the prior art, and for the sake of omitting the text, the detailed description is not made here. The end of the ventilation shaft 27 is sealed, a rain and snow prevention louver 30 is arranged on the peripheral wall of the ventilation shaft 27, in the embodiment, an insect prevention and theft prevention net 31 is further arranged on the inner side of the rain and snow prevention louver 30, the insect prevention and theft prevention net 31 is fixedly connected with the ventilation shaft 27, and the insect prevention and theft prevention net is matched with the rain and snow prevention louver 30 to play roles in ventilation, insect prevention and theft prevention.

The feed inlet 28 is covered with a cover plate 32. Referring to fig. 12 to 13, in the present embodiment, two steps 33 are provided on the side wall surrounding the feeding port 28 at intervals in the height direction. The cover plate 32 includes a steel cover plate 34 and a prefabricated cover plate 35. The periphery of the steel cover plate 34 is supported on one of the step portions 33, and is connected with the step portion 33 by bolts 36, specifically: the step part 33 connected with the steel cover plate 34 is provided with a gasket 37, the periphery of the steel cover plate 34 is supported on the gasket 37, a rubber belt 38 is clamped between the steel cover plate 34 and the gasket 37, a screw rod of a bolt 36 sequentially penetrates through the steel cover plate 34, the rubber belt 38 and the gasket 37 and stretches into the top plate 24 of the conversion layer, two nuts are arranged on the screw rod of the bolt 36, and the two nuts respectively prop against the gasket 37 and the steel cover plate 34. The periphery of the prefabricated cover plate 35 is supported on the other step portion 33 and is located above the steel cover plate 34, specifically: the prefabricated cover plate 35 is formed by splicing a plurality of prefabricated cover bodies 39, the joint of two adjacent prefabricated cover bodies 39 is sealed by polysulfide sealant 40, and the peripheral wall of the prefabricated cover plate 35 and the side wall of the corresponding step part 33 are sealed by polysulfide sealant 40 so as to play a role in sealing and waterproofing. When the material is required to be fed into the pipe gallery, the polysulfide sealant 40 can be cut by a cutter or other tool, and the prefabricated cover plate 35 can be opened.

The interior of the conversion layer 12 is partitioned into an equipment room 41, a ventilation conversion room 42, and a charging conversion room 43 by a fire partition wall 95, and in this embodiment, the equipment room 41, the ventilation conversion room 42, and the charging conversion room 43 are spaced apart in the longitudinal direction of the piping lane main line 1. Wherein, equipment room 41 communicates with escape well 26, ventilation switching layer 12 communicates with ventilation shaft 27, and material throwing switching layer 12 communicates with material throwing port 28. In the present embodiment, a normally closed fire door is provided on the fire-proof wall 95 separating the equipment room 41 and the ventilation switching room 42, and a fire-proof rolling door is provided on the fire-proof wall 95 separating the ventilation switching room 42 and the material feeding switching room 43. The first fireproof partitions 22 of the electric power cabin 82, the utility cabin 83 and the sewage cabin 84 of the piping lane main body 11 are all communicated with the equipment room 41 through escape openings 44 penetrating through the piping lane top plate 14, i.e. the three first fireproof partitions 22 are respectively communicated with the equipment room 41 through the three escape openings 44. Each first fireproof partition 22 is internally provided with a fireproof partition ladder stand 451 corresponding to the corresponding escape opening 44, the equipment room 41 is provided with an equipment room ladder stand 452 corresponding to the escape well 26, and staff can climb to the escape well 26 to escape through the fireproof partition ladder stand 451 and the equipment room ladder stand 452. An escape fire cover (not shown) is provided at each escape opening 44 to enable opening and closing. The fire-proof cover plate of the escape opening can be rotatably arranged at the corresponding escape opening 44 through a rotating shaft and other mechanisms so as to open or close the corresponding escape opening 44; or the escape fire protection cover may be movably disposed at the corresponding escape opening 44 to open or close the corresponding escape opening. Each partition can be isolated through setting up escape opening fire prevention apron, improves the security. The escape opening fireproof cover plate is preferably a light fireproof cover plate, so that a worker can easily open the escape opening fireproof cover plate, and escape is facilitated.

The first fireproof partition 22 and the second fireproof partition 23 of the electric power cabin 82, the utility cabin 83 and the sewage cabin 84 in the pipe rack main body 11 are communicated with the ventilation switching room 42 through the ventilation openings 46 penetrating the pipe rack top plate 14, namely, the three first fireproof partitions 22 are respectively communicated with the ventilation switching room 42 through the three ventilation openings 46, and the three second fireproof partitions 23 are respectively communicated with the ventilation switching room 42 through the three ventilation openings 46. In this embodiment, the remote control electric smoke-proof and fire-proof valve 47 is obtained by directly purchasing in the market, and its structure and principle belong to the prior art, and for omitting the description, the remote control electric smoke-proof and fire-proof valve 47 is not described in detail here. A fan 48 is also mounted at the vent 46 to enhance the flow of air within the corresponding compartment. When the vent 46 is used as an air outlet, the blower 48 may be omitted.

The charging conversion layer 12 is divided into a power cabin charging room 50, a comprehensive cabin charging room 51 and a sewage cabin charging room 52 by two vertically arranged fire-proof rolling doors 49, and in this embodiment, the power cabin charging room 50, the comprehensive cabin charging room 51 and the sewage cabin charging room 52 are arranged side by side along the width direction of the pipe rack main body 11, wherein the comprehensive cabin charging room 51 is communicated with the charging port 28. The electric power cabin charging room 50 is communicated with an electric power cabin 82 in the pipe gallery main body 11 through an electric power cabin charging port 53 which is arranged on the pipe gallery top plate 14; the utility cabin charging room 51 is communicated with the utility cabin 83 in the pipe gallery main body 11 through the utility cabin charging port 54 which is arranged on the pipe gallery top plate 14; the sewage tank charging room 52 communicates with the sewage tank 84 in the piping lane main body 11 through a sewage tank charging port 55 provided through the piping lane top plate 14. The power tank port 53, the integrated tank port 54 and the sewage tank port 55 are covered with a port fire-proof cover plate (not shown) to open or close the corresponding ports. The fireproof cover plate of the material opening can be rotatably arranged at the material opening 53 of the electric cabin, the material opening 54 of the comprehensive cabin or the material opening 55 of the sewage cabin through a rotating shaft and other mechanisms so as to open or close the corresponding material opening; or a port fire cover plate may be removably placed at the electric, composite or sewage tank ports 53, 54 or 55 to open or close the respective ports. Each subregion can be kept apart through setting up the material mouth fire prevention apron, the security is improved. The material opening fireproof cover plate is preferably a light fireproof cover plate, so that a worker can easily open the corresponding material opening to feed materials.

In this embodiment, dark posts 92 are also provided at the locally overstressed locations of the tube lane bottom 13, tube lane top 14 and transfer layer top 24 to provide better support thereto.

Because of the special safety requirement of the gas cabin 85, the gas cabin 85 is provided with a gas cabin ventilation escape structure 90 which is not communicated with other cabins, and the ventilation escape structure belongs to the prior art and is not repeated here.

In this embodiment, deformation joints 57 are provided in the pipe gallery main line 1, and the deformation joints 57 are provided in the pipe gallery main body 11 of the combination node 4 and the connection parts 6 of the standard segment 2 and the inverted siphon segment 3. The provision of deformation joint 57 enables the pipe gallery to accommodate uneven settlement of the foundation. The deformation joint 57 should be provided with the following specifications: 1) The maximum distance between the deformation joints 57 is not more than 30m; consider node settings; 2) The width of the seam is not less than 30mm; 3) The deformation joint 57 should be arranged at the position where the longitudinal rigidity of the structure is suddenly changed and the position where the overlying load is changed or the position where the overlying load is suddenly changed; 4) The deformation joint 57 should be provided with a water stop structure such as a rubber water stop, caulking material, etc., which belongs to the prior art, and will not be described in detail herein for the sake of brevity.

It will be appreciated that the pipe gallery main line 1 may also include other sections, such as end wells, outlet wells, etc., which are of the prior art and are not described in detail herein. In this embodiment, opposite ends of the inverted siphon section 3 are respectively connected to two standard sections 2. Opposite ends of the pipe gallery main body 11 of the combined node 4 are respectively connected with the standard section 2 and the gas cabin ventilation escape structure 90, and the other end of the gas cabin ventilation escape structure 90 is connected with the standard section 2. It will be appreciated that the connection of the segments in the pipe gallery main line 1 is not limited to this embodiment, for example, in other embodiments, opposite ends of the inverted siphon segment 3 may be connected to a standard segment 2 and a cross node structure 58, respectively, or opposite ends of the inverted siphon segment 3 may be connected to a standard segment 2 and another inverted siphon segment 3, respectively, and so on, which may be connected as desired.

Above-mentioned four cabin utility tunnel systems, it is equipped with protruding falcon 10 on the diapire of piping lane mainline 1, imbeds earth through protruding falcon 10 to reach the purpose that prevents piping lane overall structure and slide down remove under the effect of gravity, improve piping lane stability. The pipe gallery main line 1 is also provided with an inverted siphon section 3 to avoid important structures or downflow rivers. The inverted siphon section 3 comprises two downward inclined parts 7, a space for avoiding important structures or rivers can be formed between the two inclined parts 7, accumulated water in a pipe gallery can be guided into a water collecting pit 8 to be collected through the two inclined parts 7, and the accumulated water in the pipe gallery is discharged out of the pipe gallery through a water suction pump 94, so that the effect of preventing the accumulated water in the pipe gallery is achieved.

Above-mentioned four cabin utility tunnel systems, the vent 46 department of every fire prevention subregion of intercommunication and ventilation conversion layer 12 all is equipped with far control electronic smoke protection fire damper 47, can play isolated a plurality of fire prevention subregions through this far control electronic smoke protection fire damper 47, ensure the independent effect of a plurality of fire prevention subregions, thereby make six total fire prevention subregions that electric power cabin 82 in the combination node 4, comprehensive cabin 83, sewage cabin 84 formed can share a ventilation conversion layer 12 and ventilation shaft 27, and need not every fire prevention subregion and be equipped with ventilation shaft 27 alone, the quantity of ventilation shaft 27 that has significantly reduced to expose outside the earth's surface, not only can reduce its influence to urban landscape and urban appearance, can also reduce the construction degree of difficulty and cost, do benefit to later maintenance and operation management.

In the four-cabin comprehensive pipe rack system, the electric power cabin 82, the comprehensive cabin 83 and the sewage cabin 84 in the combined node 4 are isolated through the fire wall 16 to form the first fireproof partition 22 and the second fireproof partition 23, and the electric power cabin feeding room 50, the comprehensive cabin feeding room 51 and the sewage cabin feeding room 52 which respectively correspond to the three second fireproof partitions 23 are isolated through the fireproof rolling shutter door 49 in the feeding conversion layer 12, so that the independence of the fireproof partitions is better, and the safety performance of the four-cabin comprehensive pipe rack system is further improved.

In the four-cabin comprehensive pipe rack system, a steel cover plate 34 is arranged at the feeding port 28, and the steel cover plate 34 is connected with the conversion layer top plate 24 through bolts 36, so that a certain antitheft effect is achieved; the outside of steel apron 34 is equipped with prefabricated apron 35, and prefabricated apron 35 adopts a plurality of prefabricated lid 39 concatenation to form, and the junction of two adjacent prefabricated lids 39 is sealed through polysulfide sealant 40, seal through polysulfide sealant 40 between the lateral wall of the week wall of prefabricated apron 35 and corresponding step portion 33, and steel apron 34 and the rubber belt 38 that step 9 department was equipped with, this setting can improve the leakproofness of material throwing mouth 28 department, plays the waterproof effect.

Example 2

Embodiment 2 of the present invention provides a four-cabin utility tunnel system, which has a structure substantially the same as that of the four-cabin utility tunnel system in embodiment 1, and is different in that: in the embodiment, waterproof structures are further arranged on the standard section 2 and the inverted siphon section 3 of the four-cabin comprehensive pipe rack system. Please refer to fig. 14 to 16, which illustrate the waterproof structure by taking the standard section 2 as an example: two layers of wet-laid waterproof coiled materials 60 with the thickness of 1.5mm, root-resistant waterproof coiled materials 70 with the thickness of 1.2mm and C35 fine stone concrete protective layers 71 with the thickness of 70mm are sequentially laid on the box top plate 59 of the standard section 2. A fine stone concrete protective layer 71 with the thickness of 50mm and C35, two layers of wet-laid waterproof coiled materials 60 with the thickness of 1.5mm and a concrete cushion layer 73 are sequentially laid on the bottom plate 72 of the box body. Two layers of wet-laid waterproof coiled materials 60 with the thickness of 1.5mm, sintered porous brick masonry 75 with the thickness of 20mm (namely M7.5 mortar for laying Mu15 sintered porous bricks and 20mm for laying 1:3 cement mortar) and plain concrete 76 with the thickness of 500mm (only arranged on the underpass roadbed section) are sequentially laid outside the box side wall 74. In addition, a baffle (not shown) is provided on the inner side of the wet-laid waterproofing membrane 60 in the case side wall 74 to prevent mechanical damage or spark burn of the wet-laid waterproofing membrane 60. The two layers of wet-laid waterproof coiled materials 60 on the box top plate 59, the box bottom plate 72 and the box side wall 74 are connected into a whole, and the lap joint width of the two layers of wet-laid waterproof coiled materials 60 is not less than 100mm and cold adhesion is adopted.

The corner of the box side wall 74 and the box bottom plate 72 or the box top plate 59 is provided with an additional coiled material 77 besides two layers of wet laid waterproof coiled materials 60, and the corner is provided with an M7.5 cement mortar chamfer 96 with the thickness of 50 multiplied by 50 mm. The construction joint 78 in the waterproof structure of the box side wall 74 and the construction joint 78 between the two adjacent first cabins 5 are paved with wet-laid waterproof coiled material reinforcing layers 80, and the width of each reinforcing layer 80 is 500mm and the thickness is 1.5mm.

Preferably, a galvanized steel sheet water stop 81 is further arranged in the middle of the construction joint 78, and water-swelling water stop glue is arranged at a position where the galvanized steel sheet water stop 81 is not suitable for construction. The thickness of the galvanized steel sheet water stop 81 is 3mm, and the thickness of the galvanized coating in the galvanized steel sheet water stop 81 is 8um. After the initial setting of the construction joint 78, the surface slurry and impurities should be removed by a wire brush. Before pouring and tamping the horizontal construction joint 78, coating high-quality cement-based permeable crystalline waterproof material with the dosage of not less than 1.5Kg/m ² Paving cement mortar with the thickness of 30-50mm and the ratio of 1:1; before pouring and tamping the vertical or annular construction joint 78, coating high-quality cement-based permeable crystalline waterproof material with the dosage of not less than 1.5Kg/m ² And casting concrete in time.

Wherein, for the galvanized steel sheet water stop 81, the galvanized steel sheet water stop 81 adopts the reinforcing bar welded connection with the main muscle of reinforced concrete major structure, and the longitudinal interval of tie point is no more than 5 meters to prevent galvanized steel sheet water stop 81 galvanic corrosion.

For the water-swelling water stop glue, a steel wire brush is adopted to remove sand grains and concrete residues of the construction joint 78 in the laying range before construction, and then rag or high-pressure water is used for cleaning. The distance between the water-swelling water stop glue and the edge of the concrete is not smaller than 100mm, and the swelling stress can cause the concrete to swell when the distance is too small. The minimum size of the extrusion section of the water-swelling water stop glue is 15 multiplied by 8 (width multiplied by height), the lap joint length is not less than 20mm, and the water-swelling water stop glue should be continuous and uniform. The water-swelling water-stop adhesive has slow swelling performance, the expansion rate of 7D is not more than 60% of the final expansion rate, and the water-swelling water-stop adhesive is expanded in advance due to the expansion caused by soaking water and has to be re-constructed.

Meanwhile, referring to fig. 17, the wet-laid waterproof roll 60 includes a bottom isolating film layer 61, a material layer 62, an adhesive layer 63 and a top isolating film layer 64; the adhesive layer 63 is divided into two layers, which are respectively disposed above and below the material layer 62. The material layer 62 may be two or more of a polymer film layer containing a zinc plating layer, a polymer laminated film layer, a thermoplastic elastomer layer, a polyester fiber cloth, a glass fiber cloth, or a mesh cloth layer. The material layer 62 in this embodiment is preferably a polymer film layer including a galvanized layer, a polymer laminated film layer, a thermoplastic elastomer layer, a polyester fiber cloth, and a glass fiber cloth laid in this order. The adhesive layer 63 is mainly prepared from the following components in parts by weight: 28 parts of modified asphalt, 8 parts of butyl naphthenate plasticizer, 6 parts of pentaerythritol bisphosphite antioxidant and 5 parts of aluminum hydroxide flame retardant.

The modified asphalt is mainly prepared from the following raw materials in parts by weight: 16 parts of asphalt, 15 parts of rubber powder, 15 parts of epoxy resin, 10 parts of organosilicon emulsion, 6 parts of polyacrylate, 4 parts of stearic acid, 4 parts of aluminate, 3 parts of polyvinyl alcohol, 2 parts of alumina and 1 part of superfine calcium carbonate. The preparation method of the modified asphalt comprises the following steps:

(1) Weighing the raw materials in parts by weight;

(2) Putting asphalt into a stirring tank, heating to 130 ℃, adding rubber powder, epoxy resin, organic silicon emulsion, polyacrylate and stearic acid, heating to 160 ℃, and stirring for 1 hour to obtain a melt;

(3) Grinding aluminum oxide, sieving with a 300-mesh sieve, and uniformly mixing with superfine calcium carbonate to obtain inorganic powder;

(4) Adding the inorganic powder, the aluminate and the polyvinyl alcohol into the melt, mixing and stirring, adding PVDF while stirring, and uniformly stirring to obtain the PVDF-based composite material.

The bottom barrier film layer 61 and the top barrier film layer 64 are both polyethylene films.

In the modified asphalt of the wet-laid waterproof roll 60 of the embodiment of the invention, polyacrylate can form a film which has good gloss and water resistance, is firmly bonded, is not easy to peel off, is flexible and elastic at room temperature, has good weather resistance, and has low tensile strength. Stearic acid is a widely used vulcanization activator in natural gums, synthetic rubbers, and latexes, and can also be used as a plasticizer, softener, waterproofing agent, and the like. The organosilicon emulsion is an oil-in-water defoamer, has good heat resistance and freezing resistance, and has good water repellency and waterproof effect.

The aluminate is an adhesion promoter or a surface treatment agent, can promote adhesion and has a catalytic effect; improving dispersion and rheological properties; the impact strength is improved, and brittleness is not generated; the mechanical property is improved, the filling quantity is improved, and the cost is reduced; preventing phase separation, corrosion resistance, oxidation resistance, flame retardance and the like. In addition, the aluminate can also improve the compatibility of inorganic powder and plastics. Based on the effect of the component, the invention tries to apply the component to the modification of asphalt, and no report on the application of the component to modified asphalt is currently seen.

The superfine calcium carbonate has obvious effects in increasing the volume of plastic products, reducing the cost, improving the stability, the hardness and the rigidity, improving the processability of plastics, improving the heat resistance, improving the light dispersion, scratch resistance and smoothness of plastics, toughening effect on notch impact strength, viscosity in the mixing process and the like. Based on the effect of the component, the invention tries to apply the component to the modification of asphalt, and no report on the application of the component to modified asphalt is currently seen.

In addition, the concrete used for the fine stone concrete protective layer 71 in the present invention is waterproof concrete having a strength grade of C35 and a permeation resistance grade of P8. The cement selected in the waterproof concrete is low-hydration cement, and the fineness of the low-hydration cement is not more than 350m ² /kg. The fineness of the low hydration cement in this embodiment is 300m ² /kg. The anti-cracking siliceous waterproof agent is added into the waterproof concrete, the dosage of the waterproof concrete is 5% of that of the gel material, and the dosage of the gel material is not less than 300Kg/m ² And not more than 400Kg/m ² (including admixtures and additives). In this example, the amount of the cementing material was 356Kg/m ² . The chloride ion content in the waterproof concrete is not more than 0.1% of the total amount of the cementing material; the porosity of the aggregate of the waterproof concrete is not more than 40%, and the slump of the aggregate is controlled to be 120mm plus or minus 20. In this embodiment, the chloride ion content in the waterproof concrete is 0.08% of the total amount of the cementing material; the porosity of the aggregate of the waterproof concrete is 37%, and the slump of the waterproof concrete is controlled to be 120 mm+/-10.

The waterproof structure of the inverted siphon section 3 is the same as that of the standard section 2, and will not be described in detail here for the sake of omitting the explanation.

Example 3

In this example, the same procedure as in example 2 was repeated except that the thickness of the zinc-plated coating layer in the zinc-plated steel sheet water stop 81 and the composition of the wet-laid waterproof roll 60 were used.

In this embodiment, the thickness of the zinc coating in the zinc coated steel sheet water stop 81 is 10um.

The wet-laid waterproofing membrane 60 includes a bottom separator layer 61, a material layer 62, adhesive layers 63 located above and below the material layer 62, and a top separator layer 64. The material layer 62 comprises a polymer laminated film layer, a thermoplastic elastomer layer, polyester fiber cloth and glass fiber cloth which are sequentially laid. The adhesive layer 63 is mainly prepared from the following components in parts by weight: 55 parts of modified asphalt, 15 parts of citrate plasticizer, 12 parts of pentaerythritol bisphosphite antioxidant and 12 parts of aluminum hydroxide flame retardant.

The modified asphalt is mainly prepared from the following raw materials in parts by weight: 32 parts of asphalt, 30 parts of rubber powder, 25 parts of epoxy resin, 18 parts of organosilicon emulsion, 12 parts of polyacrylate, 10 parts of stearic acid, 8 parts of aluminate, 8 parts of polyvinyl alcohol, 6 parts of alumina and 5 parts of superfine calcium carbonate. The preparation method of the modified asphalt comprises the following steps:

(1) Weighing the raw materials in parts by weight;

(2) Putting asphalt into a stirring tank, heating to 140 ℃, adding rubber powder, epoxy resin, organic silicon emulsion, polyacrylate and stearic acid, heating to 175 ℃, and stirring for 2 hours to obtain a melt;

The bottom barrier film layer 61 and the top barrier film layer 64 are polyvinyl chloride films.

Example 4

In this embodiment, the thickness of the zinc coating in the zinc coated steel sheet water stop 81 is 9um.

The wet-laid waterproof roll 60 includes a bottom separator layer 61, a material layer 62, an adhesive layer 63, and a top separator layer 64 from bottom to top. The material layer 62 comprises a polymer film layer containing a galvanized layer, a polymer laminated film layer, a thermoplastic elastomer layer and a grid cloth layer which are sequentially paved. The adhesive layer 63 is mainly prepared from the following components in parts by weight: 35 parts of modified asphalt, 12 parts of butyl naphthenate plasticizer, 8 parts of pentaerythritol bisphosphite antioxidant and 8 parts of aluminum hydroxide flame retardant.

The modified asphalt is mainly prepared from the following raw materials in parts by weight: 25 parts of asphalt, 22 parts of rubber powder, 20 parts of epoxy resin, 15 parts of organosilicon emulsion, 8 parts of polyacrylate, 6 parts of stearic acid, 5 parts of aluminate, 4 parts of polyvinyl alcohol, 3 parts of alumina and 2 parts of superfine calcium carbonate. The preparation method of the modified asphalt comprises the following steps:

(1) Weighing the raw materials in parts by weight;

(2) Putting asphalt into a stirring tank, heating to 135 ℃, adding rubber powder, epoxy resin, organic silicon emulsion, polyacrylate and stearic acid, heating to 170 ℃, and stirring for 1.5 hours to obtain a melt;

The bottom barrier film layer 61 and the top barrier film layer 64 are both polyester films.

Comparative example

In this comparative example, the same procedure as in example 2 was repeated except that the wet-laid waterproofing membrane 60 used was an SBS modified asphalt waterproofing membrane.

The waterproofing and stretching properties of the wet-laid waterproofing membrane 60 of examples 2 to 4 and comparative example described above were examined, and the results are shown in table 1:

TABLE 1

From the data of the above table, the water impermeability and tensile properties of the wet-laid waterproof roll 60 of examples 2 to 4 of the present invention are superior to those of the SBS modified asphalt waterproof roll, which indicates that the wet-laid waterproof roll 60 of the present invention has good waterproof effect and durability, so that the utility tunnel waterproof structure of the present invention has good waterproof effect and long service life.

According to the four-cabin comprehensive pipe rack system, the box side walls 74, the box bottom plate 72 and the box top plate 59 are paved with the wet-laid waterproof coiled materials 60, the fine stone concrete protective layer 71 and other waterproof treatments, meanwhile, the additional coiled materials 77 are arranged at the corners, the reinforcing layers 80 of the wet-laid waterproof coiled materials 60 and the galvanized steel sheet water stop strips 81 or the slow-swelling water stop adhesive tape are paved in the construction joints 78, multiple waterproof functions are combined, and the waterproof effect of the pipe rack is good and durable. The paved wet-laid waterproof coiled material 60 comprises a bottom isolation film layer 61, a material layer 62, an adhesive layer 63 and a top isolation film layer 64 which are positioned above and below the material layer 62, wherein in the modified asphalt of the adhesive layer 63, an organosilicon emulsion, polyacrylate and stearic acid are added into a main material consisting of asphalt, rubber powder and resin, and the tensile property of the polyacrylate is improved by the emulsion formed by optimally mixing the organosilicon emulsion, the stearic acid and the polyacrylate, the viscosity of the modified asphalt is improved, and the waterproof property and the durability of the paved wet-laid waterproof coiled material 60 are further improved; the inorganic powder composed of alumina and superfine calcium carbonate is added, so that not only is the filling rate and hardness of the modified asphalt properly improved, but also the toughening effect of the impact strength and the viscous flow property in the processing process are improved; finally, through adding aluminate, the adhesion of all raw material components is promoted, and the impact strength of the modified asphalt is further improved. Through the interaction of the components, the performances of the adhesive layer 63, such as adhesiveness, durability and the like, are improved, so that the adhesiveness of each layer of material in the wet-laid waterproof coiled material 60 is good, the mechanical property of the wet-laid waterproof coiled material 60 is good, the waterproofness and durability of the wet-laid waterproof coiled material 60 are improved, and finally the waterproof effect and the service life of the utility tunnel box body are improved.

According to the four-cabin comprehensive pipe rack system, waterproof concrete is adopted, so that the waterproof concrete is optimally limited in the various indexes such as the anti-cracking siliceous waterproof agent doping amount and the chloride ion content, and the waterproof performance and the lasting durability of the box body are further improved.

The foregoing description is directed to the preferred embodiments of the present invention, but the embodiments are not intended to limit the scope of the invention, and all equivalent changes or modifications made under the technical spirit of the present invention should be construed to fall within the scope of the present invention.

Claims

1. Four cabin utility tunnel systems include the pipe gallery mainline that constitutes through standard section and the mutual connection of falling rainbow section, its characterized in that: the inside of the standard section and the inside of the inverted siphon section are respectively provided with four first cabins which are respectively used as an electric cabin, a comprehensive cabin, a sewage cabin and a fuel gas cabin through vertical walls; the inverted siphon section comprises a connecting part and two inclined parts, wherein the opposite ends of the connecting part are respectively connected with one ends of the two inclined parts, and each inclined part gradually inclines downwards along the direction towards the connecting part so as to enable a first cabin in the inclined part to sink; a water collecting pit is concavely arranged at the bottom of the first cabin in the connecting part; a step is arranged in the first cabin positioned in the inclined part so as to facilitate a user to walk in the first cabin of the connecting part; the bottom wall of the connecting part and the bottom wall of the standard section are both provided with protruding haws; the pipe gallery main line further comprises at least one combined node, wherein the combined node comprises a pipe gallery main body and a conversion layer connected above the pipe gallery main body; four second cabins are arranged in the pipe gallery main body at intervals corresponding to the first cabins, the four second cabins are respectively used as an electric power cabin, a comprehensive cabin, a sewage cabin and a gas cabin, and the electric power cabin, the comprehensive cabin and the sewage cabin in the pipe gallery main body are divided into a first fireproof partition and a second fireproof partition through a firewall; the pipe gallery main body comprises a pipe gallery bottom plate, a pipe gallery top plate and a pipe gallery side wall connecting the pipe gallery bottom plate and the pipe gallery top plate; the conversion layer comprises a conversion layer top plate and conversion layer side walls which are connected around the conversion layer top plate in a surrounding mode, the conversion layer side walls are connected with the pipe gallery top plate, escape shafts, ventilation shafts and feeding ports are arranged on the conversion layer top plate at intervals, well covers are arranged at ports of the escape shafts, and rain and snow prevention shutters are arranged on the peripheral walls of the ventilation shafts; a cover plate is covered at the feed inlet; the conversion layer is divided into an equipment room, a ventilation conversion room and a feeding conversion room by a fireproof partition wall, the equipment room is communicated with the escape well, the ventilation conversion room is communicated with the ventilation well, and the feeding conversion room is communicated with the feeding port; the first fireproof subareas are communicated with the equipment through escape openings which are arranged on the pipe gallery top plate in a penetrating way, fireproof subarea climbing ladders are arranged in each first fireproof subarea corresponding to the escape openings, equipment climbing ladders are arranged in the equipment corresponding to escape wells, and an escape opening fireproof cover plate which can be opened and closed is arranged at each escape opening; the first fireproof partition and the second fireproof partition are communicated with the ventilation conversion room through ventilation openings which are arranged on the pipe gallery top plate in a penetrating mode, and remote control electric smoke prevention and fire prevention valves are arranged at the ventilation openings; the feeding conversion room is divided into an electric power cabin feeding room, a comprehensive cabin feeding room and a sewage cabin feeding room through two fireproof rolling doors, the electric power cabin feeding room is communicated with the electric power cabin of the pipe gallery main body through an electric power cabin material opening, the comprehensive cabin feeding room is communicated with the comprehensive cabin of the pipe gallery main body through a comprehensive cabin material opening, and the sewage cabin feeding room is communicated with the sewage cabin of the pipe gallery main body through a sewage cabin material opening; the electric power cabin material port, the comprehensive cabin material port and the sewage cabin material port are provided with a material port fireproof cover plate which can be opened and closed; the main line of the pipe gallery is longitudinally segmented by adopting deformation joints; the four-cabin comprehensive pipe rack system comprises a plurality of pipe rack main lines, and cross node structures are arranged at the cross positions of the pipe rack main lines in at least two directions.

2. The four-compartment utility tunnel system of claim 1, wherein: and a fan is also arranged at the ventilation opening.

3. The four-compartment utility tunnel system of claim 1, wherein: the fire-proof partition wall separating the equipment room and the ventilation conversion room is provided with a normally-closed fire-proof door, and the fire-proof partition wall separating the ventilation conversion room and the feeding conversion room is provided with a fire-proof rolling shutter door.

4. The four-compartment utility tunnel system of claim 1, wherein: two step parts are arranged on the side wall surrounding the feeding hole at intervals along the height direction, the cover plate comprises a prefabricated cover plate and a steel cover plate, and the periphery of the steel cover plate is supported on one step part and is connected with the step part through a bolt; the periphery of the prefabricated cover plate is supported on the other step part and is positioned above the steel cover plate.

5. The four-compartment utility tunnel system of claim 4 wherein: the prefabricated cover plate is formed by splicing a plurality of prefabricated cover bodies, the joint of every two adjacent prefabricated cover bodies is sealed through polysulfide sealant, and the peripheral wall of the prefabricated cover plate is sealed with the side wall of the corresponding step part through polysulfide sealant.

6. The four-compartment utility tunnel system of claim 5 wherein: the step part connected with the steel cover plate is provided with a gasket in a pad mode, the periphery of the steel cover plate is supported on the gasket, a rubber belt is clamped between the steel cover plate and the gasket, a screw rod of the bolt sequentially penetrates through the steel cover plate, the rubber belt and the gasket and stretches into the top plate of the conversion layer, and two nuts on the screw rod of the bolt respectively prop against the gasket and the steel cover plate.