Construction method for deep-buried underground comprehensive pipe gallery crossing obstacles

Abstract

The application discloses a deep-buried underground comprehensive pipe gallery overpass obstacle construction method, which adopts a "sandwich and inclined shaft tunnel" rectangular reinforced concrete structure between the underground pipe gallery and the overpass structure, so that various medium pipelines in the pipe gallery can be connected with the overpass obstacle structure outside the pipe gallery through the structure, the method has the advantages of simple structure, low comprehensive cost, good durability, good stability, strong protection for the medium pipelines, convenience for medium pipeline maintenance, and the like, can solve the connection problem between the underground comprehensive pipe gallery and the overpass structure outside the pipe gallery, and is safer than the direct-buried installation of the medium pipelines by adding a protective measure outside the medium pipelines, the rectangular sandwich structure can be constructed synchronously by using the pipe gallery cabin foundation pit support system, and secondary excavation is avoided, the "sandwich and inclined shaft tunnel" are both rectangular reinforced concrete structures, and conventional materials are used for construction, so that the measure cost and construction period are saved.

Description

Technical Field

[0001] This invention relates to the field of underground utility tunnel construction technology, specifically a method for constructing a deep-buried underground utility tunnel that crosses obstacles. Background Technology

[0002] With the development of urban construction in my country, various buildings within cities are becoming increasingly dense, leading to a higher concentration and density of energy consumption. Integrated underground utility tunnels, combining water supply, drainage, greywater, heating, cooling, power supply, and communications, have become an important component of urban development. The construction of these tunnels must consider land conservation and minimal impact on the urban landscape. Currently, they are often built concurrently with municipal roads and green belts, and are located beneath them. When the route of the underground utility tunnel conflicts with non-relocatable important pipelines, highways, subways, civil defense shelters, and municipal drainage channels, alternative methods such as underpasses, overpasses, or detours must be considered to avoid them.

[0003] There are existing cases regarding construction methods for deep-buried underground utility tunnels crossing obstacles, but some shortcomings still exist:

[0004] 1. As disclosed in application number CN202120217179.1, a branch outlet of a utility tunnel that avoids obstacles adopts an integrated branch outlet structure that avoids obstacles. This structure allows for flexible adjustment of elevation without adjusting the burial depth of the utility tunnel or moving the obstacles, ensuring a safe distance between the outgoing pipelines while minimizing the burial depth of the outgoing pipelines and providing maximum convenience to users. However, this construction technology has the following problems: the mezzanine extends outside the box-shaped structure of the utility tunnel, increasing the difficulty of support construction; the medium pipeline is directly buried in the soil, making maintenance and replacement very inconvenient; the obstacles are at the same elevation as the utility tunnel; and the complexity of intersecting pipelines is insufficient.

[0005] 2. As disclosed in the application document CN201910758344.1, a construction method for a pre-protection structure of an underground integrated pipe gallery spanning a proposed tunnel includes the following steps: (1) binding the steel cage; (2) construction: first, setting up a concrete guide wall positioning borehole interlocking pile retaining structure, then embedding the casing, preparing the mud, drilling, cleaning the hole, lowering the steel cage, pouring concrete, then carrying out high-pressure jet grouting full-span reinforcement construction, then drilling holes and planting steel bars on the borehole interlocking pile retaining structure, then binding the steel cage of the borehole interlocking pile retaining structure together, so that the side wall of the underground integrated pipe gallery and the borehole interlocking pile retaining structure form a composite wall and cooperate in bearing the force, then pouring the bottom plate, side plate and top plate of the underground integrated pipe gallery; (3) backfilling soil and restoring the road surface, handing over and accepting the project. The present invention adopts the method of full-span reinforcement with jet grouting piles, which can improve the bearing capacity of the foundation and reduce uneven deformation. However, the problem with this construction technology is that it does not solve how to protect the pipelines exiting the cabin and how to avoid obstacles.

[0006] 3. For example, the published document with application number CN202110624354.3 describes a construction method for crossing a subway station, including: S1, locating the positional relationship between the subway station and the utility tunnel; S2, vertical layered excavation, with manual excavation near the station's top slab; S3, applying waterproofing and penetrating crystallization; S4, pouring waterproof mortar and reinforced concrete layers; S5, removing the diaphragm wall; S6, removing the capping concrete; S7, applying waterproofing and penetrating crystallization; S8, laying waterproof membrane; S9, pouring the waterproof protective layer for the utility tunnel; S10, applying waterproofing and penetrating crystallization; S11, constructing the utility tunnel and connecting the excavated reinforcing bars to the tunnel's bottom slab reinforcing bars, backfilling the foundation pit, thus solving the problems of protecting the subway station's retaining structure and waterproofing structure during utility tunnel construction, as well as the issue of the station floating. However, this construction technology has a problem: it does not solve how to protect the outgoing pipelines and how to avoid obstacles.

[0007] Therefore, to accelerate the construction of underground utility tunnels and better address the challenges of connecting them to overpasses on highways, a method is urgently needed that changes the traditional practice of directly burying media pipelines outside the underground utility tunnel and solves the problem of how to connect the underground utility tunnel to external structures. In view of this, a construction method for deep-buried underground utility tunnels crossing obstacles is designed. Summary of the Invention

[0008] The purpose of this invention is to provide a construction method for deep-buried underground utility tunnels crossing obstacles, so as to solve the problems existing in the existing construction methods for deep-buried underground utility tunnels crossing obstacles as mentioned in the background art.

[0009] To achieve the above objectives, the present invention provides the following technical solution: a construction method for a deep-buried underground utility tunnel crossing an obstacle, comprising the following steps:

[0010] S1. During the construction of the top slab of the box-shaped reinforced concrete structure of the underground integrated pipe gallery, a reserved opening 1 is made in the integrated compartment and a reserved opening 2 is made in the power compartment.

[0011] S2. A rectangular reinforced concrete structure is installed at the entrance to lead the water supply, cooling and communication pipelines in the integrated compartment to the mezzanine compartment.

[0012] S3. A rectangular reinforced concrete structure is set up at the second opening to lead the power lines in the power compartment to the mezzanine compartment.

[0013] S4. Reserve a rectangular opening on the side of the integrated utility tunnel for the water supply, cooling, and communication pipeline mezzanine compartment;

[0014] S5. Reserve a rectangular opening on the side of the power line mezzanine compartment towards the integrated utility tunnel;

[0015] S6. The water supply, cooling, communication pipeline mezzanine and power pipeline mezzanine are horizontally turned toward the direction that needs to cross the highway, and the structural form is a rectangular cross-section reinforced concrete structure.

[0016] S7. The bridge deck and mezzanine structure of the utility tunnel will be connected using a rectangular cross-section reinforced concrete inclined shaft tunnel.

[0017] S8. Various media pipelines in the utility tunnel extend towards the utility tunnel bridge through "interlayer and inclined shaft tunnels";

[0018] S9. For the rectangular reinforced concrete structure of the utility tunnel “interlayer and inclined shaft tunnel” in contact with the soil, an outer surface leveling layer, a waterproof layer, and a waterproof protective layer shall be constructed.

[0019] Preferably, in step S1, the maximum width of opening one and the maximum width of opening two are the widths of the underground utility tunnel cabin.

[0020] Preferably, in step S1, the dimensions of the first opening and the second opening are determined according to the types and quantities of pipelines entering the corridor in the near term and the types and quantities of pipelines entering the corridor in the long term.

[0021] Preferably, in step S1, both portal one and portal two belong to the mezzanine portion of the rectangular reinforced concrete structure of the "mezzanine and inclined shaft tunnel".

[0022] Preferably, in step S4, the opening is used to connect with the water supply, cooling, and communication pipeline tunnels in the inclined shaft tunnel structure.

[0023] Preferably, in step S5, the opening is used to connect with the power tunnel in the inclined shaft tunnel structure.

[0024] Preferably, in step S6, after the water supply, cooling, communication pipeline mezzanine and power pipeline mezzanine are horizontally turned, the structural form adopts a rectangular cross-section reinforced concrete structure.

[0025] Preferably, in step S9, the concrete used for the construction of the outer surface leveling layer, waterproof layer, and waterproof protective layer must be impermeable concrete of the same strength as that used for the pipe gallery chamber.

[0026] Preferably, the length of the rectangular reinforced concrete structure of the "mezzanine + inclined shaft tunnel" is determined according to the length of the obstacle to be crossed.

[0027] Preferably, the inclination of the rectangular reinforced concrete structure of the "mezzanine + inclined shaft tunnel" is determined according to the height of the obstacle to be crossed and the height of the bridge deck of the utility tunnel.

[0028] Compared with the prior art, the beneficial effects of the present invention are:

[0029] 1. The construction method for the underground utility tunnel crossing obstacles adopts a rectangular reinforced concrete structure of "interlayer and inclined shaft tunnel" connecting the underground utility tunnel and the overpass structure. This structure allows various media pipelines inside the utility tunnel to connect with the overpass structure outside the utility tunnel. The method has a simple structure, low overall cost, good durability, good stability, strong protection for media pipelines, and facilitates the inspection and maintenance of media pipelines. It can solve the problem of connecting the underground utility tunnel with the overpass structure outside the utility tunnel.

[0030] 2. The construction method for this deep-buried underground utility tunnel that crosses obstacles by adding an extra layer of protection to the external medium pipeline is much safer than direct burial of the pipeline.

[0031] 3. The construction method of the deep-buried underground integrated pipe gallery over obstacles is to transform the spatial position of the rectangular reinforced concrete structure of "interlayer and inclined shaft tunnel", and to lead the medium pipeline out of the driving lane area directly above the pipe gallery through the protection of the medium pipeline by the reinforced concrete structure, so as to avoid the adverse effects of dynamic load, static load, natural corrosion and accidental events on the medium pipeline.

[0032] 4. In this method of constructing a deep-buried underground utility tunnel that crosses obstacles, all media pipelines from the compartment of the deep-buried underground utility tunnel to the bridge crossing the highway are completely enclosed in the rectangular reinforced concrete of the "mezzanine and inclined shaft tunnel". In the medium and long term, when the media pipelines are inspected, added or removed, the staff can work in the "mezzanine and inclined shaft tunnel" throughout the process, avoiding the occupation of the municipal road above the utility tunnel, which would affect traffic and damage immovable obstacles such as oil pipelines and military optical cables that cannot be relocated on the outside of the utility tunnel.

[0033] 5. The rectangular mezzanine structure of the deep-buried underground integrated utility tunnel over obstacles can be constructed simultaneously using the tunnel's foundation pit support system, avoiding secondary excavation. Both the mezzanine and the inclined shaft tunnel are rectangular reinforced concrete structures, constructed using conventional materials, saving on construction costs and time. Attached Figure Description

[0034] Figure 1 This is a plan view of the interlayer of the construction method for the deep-buried underground integrated pipe gallery crossing obstacles according to the present invention;

[0035] Figure 2 This invention relates to a construction method for deep-buried underground utility tunnels crossing obstacles. Figure 1 Cross-sectional view at point AA;

[0036] Figure 3 This invention relates to a construction method for deep-buried underground utility tunnels crossing obstacles. Figure 1 Cross-sectional view at point BB;

[0037] Figure 4 This invention relates to a construction method for deep-buried underground utility tunnels crossing obstacles. Figure 1 Cross-sectional view at point CC;

[0038] Figure 5 This invention relates to a construction method for deep-buried underground utility tunnels crossing obstacles. Figure 1 Cross-sectional view at point DD;

[0039] Figure 6 This invention relates to a construction method for deep-buried underground utility tunnels crossing obstacles. Figure 1 Cross-sectional view at the EE section;

[0040] Figure 7 This is a plan view of the inclined shaft tunnel in the construction method of the deep-buried underground integrated pipe gallery crossing obstacles according to the present invention. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] In the description of the invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0043] In the description of the invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0044] Please see Figure 1-7 This invention provides a technical solution: a construction method for a deep-buried underground utility tunnel crossing an obstacle, comprising the following steps:

[0045] S1. During the construction of the top slab of the box-shaped reinforced concrete structure of the underground integrated pipe gallery, a reserved opening 1 is made in the integrated compartment and a reserved opening 2 is made in the power compartment.

[0046] S2. A rectangular reinforced concrete structure is installed at the entrance to lead the water supply, cooling and communication pipelines in the integrated compartment to the mezzanine compartment.

[0047] S3. A rectangular reinforced concrete structure is set up at the second opening to lead the power lines in the power compartment to the mezzanine compartment.

[0048] S4. Reserve a rectangular opening on the side of the integrated utility tunnel for the water supply, cooling, and communication pipeline mezzanine compartment;

[0049] S5. Reserve a rectangular opening on the side of the power line mezzanine compartment towards the integrated utility tunnel;

[0050] S6. The water supply, cooling, communication pipeline mezzanine and power pipeline mezzanine are horizontally turned toward the direction that needs to cross the highway, and the structural form is a rectangular cross-section reinforced concrete structure.

[0051] S7. The bridge deck and mezzanine structure of the utility tunnel will be connected using a rectangular cross-section reinforced concrete inclined shaft tunnel.

[0052] S8. Various media pipelines in the utility tunnel extend towards the utility tunnel bridge through "interlayer and inclined shaft tunnels";

[0053] S9. For the rectangular reinforced concrete structure of the utility tunnel “interlayer and inclined shaft tunnel” in contact with the soil, an outer surface leveling layer, a waterproof layer, and a waterproof protective layer shall be constructed.

[0054] Specifically, a rectangular reinforced concrete structure of "interlayer and inclined shaft tunnel" is set at the end of the underground utility tunnel that needs to cross obstacles to lead various media pipelines from the underground utility tunnel to the ground. Through the conversion in this reinforced concrete structure, the media pipelines can connect with the bridge that crosses the obstacle, and the media pipelines can extend forward smoothly.

[0055] Specifically, this method involves inventing a rectangular reinforced concrete structure called a "mezzanine and inclined shaft tunnel" that connects the underground utility tunnel and the overpass structure. This structure allows various media pipelines inside the tunnel to connect with the overpass structure outside the tunnel. The method is simple in structure, low in overall cost, durable, stable, provides strong protection for media pipelines, and facilitates the inspection and maintenance of media pipelines. It can solve the problem of how underground integrated utility tunnels can connect with the overpass structure outside the tunnel.

[0056] In step S1, the maximum width of opening one and opening two are equal to the width of the underground utility tunnel chamber. Specifically, limiting the maximum width of the openings ensures the structural strength and stability of the openings while reducing the need for modification and excavation of the utility tunnel chamber.

[0057] In step S1, the dimensions of opening one and opening two are determined according to the types and quantities of pipelines entering the tunnel in the near term and in the long term. Specifically, determining the opening dimensions based on the types and quantities of pipelines entering the tunnel in the near and long term can meet the needs and allowances for different pipelines, while improving the utilization rate and flexibility of the openings. All kinds of media pipelines, from the compartments of the deeply buried underground integrated utility tunnel to the bridge crossing the highway, are completely enclosed in the rectangular reinforced concrete of the mezzanine and inclined shaft tunnels. During the medium and long term, when media pipelines are inspected or added or removed, workers can work entirely within the mezzanine and inclined shaft tunnels, avoiding the occupation of municipal roads above the utility tunnel that would affect traffic and the damage to immovable obstacles such as oil pipelines and military optical cables that cannot be relocated on the outside of the utility tunnel.

[0058] In step S1, both portal one and portal two are mezzanine sections within the rectangular reinforced concrete structure of the "mezzanine and inclined shaft tunnel". Specifically, treating the portals as mezzanine sections within the "mezzanine and inclined shaft tunnel" structure allows for a smooth transition of pipelines from the utility tunnel cabin to the mezzanine cabin. This simplifies the structural form and construction process. By changing the spatial position of the rectangular reinforced concrete structure of the "mezzanine and inclined shaft tunnel" and protecting the media pipelines with the reinforced concrete structure, the pipelines are led out of the driveway area directly above the utility tunnel, avoiding adverse effects from dynamic loads, static loads, natural corrosion, and unexpected events on the media pipelines.

[0059] In step S4, the opening is used to connect with the water supply, cooling, and communication pipeline tunnels in the inclined shaft tunnel structure. Specifically, this allows these pipelines to extend smoothly from the mezzanine compartment to the inclined shaft tunnel, while avoiding intersections and interference between pipelines.

[0060] In step S5, the opening is used to connect with the power tunnel in the inclined shaft tunnel structure. Specifically, this allows for the smooth extension of power lines from the mezzanine compartment to the inclined shaft tunnel, while avoiding intersections and interference between power lines and other pipelines.

[0061] In step S6, after the water supply, cooling, communication, and power line mezzanine compartments are horizontally redirected, their structural form adopts a rectangular cross-section reinforced concrete structure. Specifically, this allows for the horizontal change of these pipelines from the mezzanine compartments to the inclined shaft tunnel, while maintaining structural consistency and simplicity. The rectangular mezzanine structure can be constructed simultaneously using the pipe gallery's foundation pit support system, avoiding secondary excavation. Both the mezzanine and the inclined shaft tunnel are rectangular reinforced concrete structures, constructed using conventional materials, saving on construction costs and time.

[0062] In step S9, the concrete used for the construction of the outer surface leveling layer, waterproof layer, and waterproof protective layer must be impermeable concrete of the same strength as that used in the utility tunnel structure. Specifically, this improves the impermeability and durability of the "interlayer and inclined shaft tunnel" structure at the soil contact surface, while ensuring the strength matching between the structure and the utility tunnel structure.

[0063] The length of the rectangular reinforced concrete structure of the "mezzanine + inclined shaft tunnel" is determined by the length of the obstacle it needs to cross. Specifically, this allows for adaptation to different engineering conditions and requirements.

[0064] The slope of the rectangular reinforced concrete structure of the "mezzanine + inclined shaft tunnel" is determined according to the height of the obstacles it needs to cross and the height of the pipe gallery bridge deck. Specifically, this facilitates a smooth transition and reasonable layout of pipelines.

[0065] Specifically, the safety protection of "lifeline media pipelines" such as urban water supply, communications, electricity, and cooling is extremely important. Adding an extra layer of protection to the media pipeline is far safer than direct burial of the pipeline.

[0066] Example 1

[0067] The average burial depth of the integrated utility tunnel in a certain project is 3.7 meters, with a maximum depth of 14.4 meters at one location. Directly above the tunnel is a roadway, and to the side are oil pipelines belonging to the National Pipeline Company and military communication optical cables. At the location where the underground utility tunnel crosses the highway, the top of the tunnel is 3.2 meters above the ground, and the top of the tunnel is 11.9 meters below the bridge deck. The construction steps for this project are as follows:

[0068] S1. During the construction of the top slab of the box-type reinforced concrete structure of the two-compartment utility tunnel, a reserved opening 1 is made in the integrated compartment and a reserved opening 2 is made in the power compartment. The size of the openings can be determined according to the types and quantities of pipelines entering the tunnel in the near future and the types and quantities of pipelines entering the tunnel in the long term. The maximum width of the opening is the width of the underground integrated utility tunnel compartment. Openings 1 and 2 belong to the mezzanine part of the rectangular reinforced concrete structure of the "mezzanine and inclined shaft tunnel". See the appendix of the instruction manual. Figure 1 ;

[0069] S2. A rectangular reinforced concrete structure shall be constructed at the entrance to guide the water supply, cooling, and communication pipelines from the integrated compartment to the mezzanine compartment. (See attached instruction manual) Figure 3-4 ;

[0070] S3. A rectangular reinforced concrete structure is installed at opening 2 to lead the power lines from the power compartment to the mezzanine compartment. See the attached instruction manual. Figure 2 and instruction manual attached Figure 5 ;

[0071] S4. A rectangular opening is reserved on the side of the integrated utility tunnel for the water supply, cooling, and communication pipeline mezzanine compartment. This opening is used to connect with the "water supply, cooling, and communication pipeline tunnel" in the "inclined shaft tunnel" structure. See the appendix in the instruction manual. Figure 4 Instruction manual attached Figure 6 and instruction manual attached Figure 7 ;

[0072] S5. A rectangular opening is reserved on the side of the power cable mezzanine compartment facing the integrated utility tunnel. This opening is used to connect with the "power tunnel" in the "inclined shaft tunnel" structure. See the attached instruction manual. Figure 5-7 ;

[0073] S6. The water supply, cooling, communication pipeline mezzanine and the power pipeline mezzanine shall be horizontally turned in the direction where they need to cross the highway. The structural form shall be a rectangular cross-section reinforced concrete structure. See the appendix of the instruction manual. Figure 7 ;

[0074] S7. The bridge deck and mezzanine structure of the utility tunnel will be connected using a rectangular reinforced concrete "inclined shaft tunnel" (see attached instruction manual). Figure 6 ;

[0075] S8. Various media pipelines in the utility tunnel extend towards the utility tunnel bridge through "interlayer and inclined shaft tunnels";

[0076] S9. The rectangular reinforced concrete structure of the "interlayer and inclined shaft tunnel" of the utility tunnel needs to be constructed with an outer surface leveling layer, a waterproof layer, and a waterproof protective layer at the contact surface with the soil. The concrete must be impermeable concrete with the same strength as the utility tunnel body.

[0077] Specifically, based on actual construction, a rectangular reinforced concrete structure consisting of "mezzanine and inclined shaft tunnels" is used to bring various media pipelines from the underground utility tunnel to the surface. This transition within the reinforced concrete structure allows pipelines to avoid obstacles such as the roadway directly above the tunnel and oil pipelines and military communication optical cables to the sides. Simultaneously, it allows media pipelines to connect with the tunnel bridge crossing the highway, enabling smooth forward extension and connecting the underground utility tunnels on both sides of the highway. This method changes the traditional practice of directly burying media pipelines outside the underground utility tunnel. It features a simple structure, low overall cost, good durability and stability, strong protection for media pipelines, and easy maintenance, effectively solving the problem of how underground utility tunnels connect to external structures.

[0078] Example 2

[0079] This embodiment is applicable to the construction of a deep-buried underground utility tunnel crossing a subway tunnel. The specific steps are as follows:

[0080] a) During the construction of the top slab of the box-type reinforced concrete structure of the underground integrated utility tunnel, a reserved opening 1 is made in the integrated compartment and a reserved opening 2 is made in the power compartment. The opening size is 2.5 meters × 2.5 meters.

[0081] b) A rectangular reinforced concrete structure is constructed at the opening 1 to lead the water supply, cooling, and communication pipelines in the integrated cabin to the mezzanine cabin. The mezzanine cabin is 1.5 meters high and 2.5 meters wide.

[0082] c) A rectangular reinforced concrete structure is constructed at opening 2 to lead the power lines in the power compartment to the mezzanine compartment. The mezzanine compartment is 1.5 meters high and 2.5 meters wide.

[0083] d) A rectangular opening will be reserved on the side of the integrated utility tunnel for the water supply, cooling, and communication pipeline mezzanine compartment. This opening will be used to connect with the "water supply, cooling, and communication pipeline tunnel" in the "inclined shaft tunnel" structure. The opening will be 1.5 meters × 1.5 meters in size.

[0084] e) A rectangular opening is reserved on the side of the power line mezzanine compartment to connect with the power tunnel in the inclined shaft tunnel structure. The opening is 1.5 meters × 1.5 meters in size.

[0085] f) The water supply, cooling, communication pipeline mezzanine and power pipeline mezzanine will be horizontally turned in the direction that needs to cross the subway tunnel. The structure is a rectangular reinforced concrete structure with a length of 10 meters, a height of 1.5 meters and a width of 2.5 meters.

[0086] g) The bridge deck and mezzanine structure of the utility tunnel will be connected by a rectangular reinforced concrete "inclined shaft tunnel". The inclined shaft tunnel is 15 meters long, 1.5 meters high, 2.5 meters wide, and has an inclination of 30°.

[0087] h) Various media pipelines within the utility tunnel extend towards the utility tunnel bridge via "interlayer and inclined shaft tunnels";

[0088] i) Construction of the outer surface leveling layer, waterproof layer, and waterproof protective layer at the contact surface between the rectangular reinforced concrete structure and the soil of the utility tunnel “interlayer and inclined shaft tunnel”.

[0089] Example 3

[0090] This embodiment is applicable to the construction of deeply buried underground utility tunnels crossing rivers. The specific steps are as follows:

[0091] a) During the construction of the top slab of the box-shaped reinforced concrete structure of the underground integrated utility tunnel, a reserved opening 1 is made in the integrated compartment and a reserved opening 2 is made in the power compartment. The opening size is 3 meters × 3 meters.

[0092] b) A rectangular reinforced concrete structure is set up at the opening 1 to lead the water supply, cooling and communication pipelines in the integrated cabin to the mezzanine cabin. The mezzanine cabin is 2 meters high and 3 meters wide.

[0093] c) A rectangular reinforced concrete structure is set up at the opening 2 to lead the power lines in the power compartment to the mezzanine compartment. The mezzanine compartment is 2 meters high and 3 meters wide.

[0094] d) A rectangular opening will be reserved on the side of the integrated utility tunnel for the water supply, cooling, and communication pipeline mezzanine compartment. This opening will be used to connect with the "water supply, cooling, and communication pipeline tunnel" in the "inclined shaft tunnel" structure. The size of the opening is 2 meters × 2 meters.

[0095] e) Reserve a rectangular opening on the side of the power line mezzanine compartment to connect with the power tunnel in the inclined shaft tunnel structure. The opening is 2 meters × 2 meters in size.

[0096] f) The water supply, cooling, communication pipeline mezzanine and power pipeline mezzanine will be turned horizontally in the direction that needs to cross the river. The structure is a rectangular reinforced concrete structure with a length of 20 meters, a height of 2 meters and a width of 3 meters.

[0097] g) The bridge deck and mezzanine structure of the utility tunnel will be connected by a rectangular reinforced concrete "inclined shaft tunnel". The inclined shaft tunnel is 25 meters long, 2 meters high, 3 meters wide, and has an inclination of 45°.

[0098] h) Various media pipelines within the utility tunnel extend towards the utility tunnel bridge via "interlayer and inclined shaft tunnels";

[0099] i) Construction of the outer surface leveling layer, waterproof layer, and waterproof protective layer at the contact surface between the rectangular reinforced concrete structure and the soil of the utility tunnel “interlayer and inclined shaft tunnel”.

[0100] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A construction method for deep-buried underground utility tunnels crossing obstacles, characterized in that, Includes the following steps: S1. During the construction of the top slab of the box-shaped reinforced concrete structure of the underground integrated pipe gallery, a reserved opening 1 is made in the integrated compartment and a reserved opening 2 is made in the power compartment. S2. A rectangular reinforced concrete structure is installed at the entrance to lead the water supply, cooling and communication pipelines in the integrated compartment to the mezzanine compartment. S3. A rectangular reinforced concrete structure is set up at the second opening to lead the power lines in the power compartment to the mezzanine compartment. S4. Reserve a rectangular opening on the side of the integrated utility tunnel for the water supply, cooling, and communication pipeline mezzanine compartment; S5. Reserve a rectangular opening on the side of the power line mezzanine compartment towards the integrated utility tunnel; S6. The water supply, cooling, communication pipeline mezzanine and power pipeline mezzanine are horizontally turned toward the direction that needs to cross the highway, and the structural form is a rectangular cross-section reinforced concrete structure. S7. The bridge deck and mezzanine structure of the utility tunnel will be connected using a rectangular cross-section reinforced concrete inclined shaft tunnel. S8. Various media pipelines in the utility tunnel extend towards the utility tunnel bridge through "interlayer and inclined shaft tunnel"; For S9, the rectangular reinforced concrete structure of the "interlayer and inclined shaft tunnel" of the utility tunnel shall be constructed with an outer surface leveling layer, a waterproof layer, and a waterproof protective layer at the contact surface with the soil.

2. The construction method for deep-buried underground integrated utility tunnels crossing obstacles according to claim 1, characterized in that: In step S1, the maximum width of opening one and the maximum width of opening two refer to the width of the underground utility tunnel cabin.

3. The construction method for deep-buried underground integrated utility tunnels crossing obstacles according to claim 1, characterized in that: In step S1, the dimensions of opening one and opening two are determined according to the types and quantities of pipelines entering the corridor in the near term and the types and quantities of pipelines entering the corridor in the long term.

4. The construction method for deep-buried underground integrated utility tunnels crossing obstacles according to claim 1, characterized in that: In step S1, both entrance one and entrance two belong to the mezzanine portion of the rectangular reinforced concrete structure of the "mezzanine and inclined shaft tunnel".

5. The construction method for deep-buried underground integrated utility tunnels crossing obstacles according to claim 1, characterized in that: In step S4, the opening is used to connect with the water supply, cooling, and communication pipeline tunnels in the inclined shaft tunnel structure.

6. The construction method for deep-buried underground integrated utility tunnels crossing obstacles according to claim 1, characterized in that: In step S5, the opening is used to connect with the power tunnel in the inclined shaft tunnel structure.

7. The construction method for deep-buried underground integrated utility tunnels crossing obstacles according to claim 1, characterized in that: In step S6, after the water supply, cooling, communication pipeline mezzanine and power pipeline mezzanine are horizontally turned, the structural form adopts a rectangular cross-section reinforced concrete structure.

8. The construction method for deep-buried underground integrated utility tunnels crossing obstacles according to claim 1, characterized in that: In step S9, the concrete used for the construction of the outer surface leveling layer, waterproof layer, and waterproof protective layer must be impermeable concrete of the same strength as that used for the pipe gallery chamber.

9. The construction method for deep-buried underground integrated utility tunnels crossing obstacles according to claim 1, characterized in that: The length of the rectangular reinforced concrete structure of the "mezzanine and inclined shaft tunnel" is determined according to the length of the obstacle to be crossed.

10. The construction method for deep-buried underground integrated utility tunnels crossing obstacles according to claim 1, characterized in that: The inclination of the rectangular reinforced concrete structure of the "mezzanine and inclined shaft tunnel" is determined according to the height of the obstacles to be crossed and the height of the bridge deck of the utility tunnel.

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