Urban multi-cabin comprehensive underground pipe gallery structure construction method suitable for various geological conditions

Abstract

The invention provides a construction method of an urban multi-cabin comprehensive underground pipe gallery structure adapting to various geological conditions, which comprises the following steps of: establishing a three-dimensional geological model to guide construction planning, and realizing differentiated manufacturing of cabins with different functions by adopting a sub-cabin prefabrication process; complex stratum crossing is completed by combining a step-by-step non-excavation technology with a stepped reamer bit and a hydraulic deviation rectifying device, a dynamic supporting system and an intelligent waterproof monitoring network are constructed to guarantee structural safety, construction parameters are optimized by utilizing a cloud database, and efficient assembly is realized by adopting a modular pipeline mounting process. By means of multi-cabin flexible connection, intelligent grouting supporting, a self-repairing waterproof system and AI algorithm optimization, the problems that in traditional construction, geological adaptability is poor, structural integrity is insufficient, and the environmental influence is large are solved, and safe and efficient construction of the pipe gallery under the complex geological condition is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of utility tunnel structure construction, and in particular, to a construction method for a multi-compartment integrated urban underground utility tunnel structure adaptable to various geological conditions. Background Art

[0002] With the acceleration of the urbanization process, the demand for urban underground space development has increased sharply, and the importance of utility tunnels as intensive municipal infrastructure has become increasingly prominent. The construction of utility tunnels under complex geological conditions (such as soft soil, water-rich strata, fault fracture zones) faces severe challenges: traditional construction methods are difficult to balance the functional differences of multiple compartments and geological adaptability, and are prone to cause surrounding settlement and collapse risks during construction, and have a large impact on traffic and the environment. In addition, existing technologies rely on manual experience, lack the ability of real-time monitoring and dynamic adjustment, and are difficult to cope with geological mutations, resulting in low construction efficiency, high costs, and insufficient structural integrity, and there is an urgent need for intelligent and green construction technology breakthroughs.

[0003] Traditional construction methods have significant limitations: the open-cut method requires large-scale excavation in complex strata, causing traffic congestion and environmental pollution; the shield method has poor adaptability to strata with uneven hardness, serious tool wear and high equipment customization; the in-situ casting process has low mechanization and a long construction period; special support measures (such as freezing method, grouting reinforcement) are costly and cause large disturbances. At the same time, the nodes of multi-compartment utility tunnels are prone to cracking and leakage due to geological differences, and the traditional waterproof system has a high risk of failure under dynamic stress. In addition, existing technologies lack full-process intelligent control, low material recycling rate, and are difficult to meet the requirements of green construction.

[0004] Therefore, it is necessary to design a construction method for a multi-compartment integrated urban underground utility tunnel structure adaptable to various geological conditions to solve the core problems existing in the prior art, such as insufficient geological adaptability, low construction efficiency, poor structural integrity and waterproof reliability, large environmental impact, and lack of intelligence and sustainability. Summary of the Invention

[0005] In view of this, the present invention proposes a construction method for a multi-compartment integrated urban underground utility tunnel structure adaptable to various geological conditions, aiming to solve the problems that the coordination contradiction between the functional requirements of multiple compartments and complex geological conditions in the prior art is prominent, and it is difficult for traditional processes to achieve differential structural design; there is a lack of real-time monitoring and dynamic regulation during the construction process, and the safety risk is high; the durability of the waterproof system is insufficient and the maintenance cost is high; there is serious resource waste and it does not conform to the concept of green construction.

[0006] On the one hand, the present invention proposes a construction method for a multi-compartment integrated urban underground utility tunnel structure adaptable to various geological conditions, including:

[0007] Establish a three-dimensional geological model, obtain formation parameters through borehole coring and geophysical exploration, and divide the geological area into soft interlayers, water-rich layers, and faults;

[0008] Plan the spatial layout of the multi-compartment utility tunnel, determine the structural dimensions according to the functional requirements of the compartments, and adopt the prefabrication process of separate compartments;

[0009] Implement step-by-step trenchless construction, use horizontal directional drilling technology to penetrate the formation, synchronously lay prefabricated compartments, and achieve flexible connection between compartments through adjustable connectors;

[0010] Construct a dynamic support system, set up a grouting system outside the utility tunnel, and real-time monitor the grouting filling effect through pressure sensors and adjust the grouting parameters;

[0011] Integrate a waterproof monitoring network, embed distributed fiber optic sensors in the inner wall of the utility tunnel, and real-time detect the location of water leakage and trigger the response of self-healing materials;

[0012] Establish a construction parameter database, synchronously upload geological data, support parameters, and construction progress to the cloud platform, and optimize the construction plan through AI algorithms;

[0013] Adopt a modular pipeline installation process, reserve standardized interfaces in the prefabricated compartments, and carry out pipeline assembly and commissioning according to the functional zoning.

[0014] Furthermore, the prefabrication process of separate compartments includes:

[0015] Select fiber-reinforced concrete with different strength grades according to the compartment functions, and use steel formwork for vibration molding;

[0016] Preset annular grooves on the outer side of the prefabricated compartment for installing water-swellable waterstops and grouting pipes;

[0017] Set concave-convex tenon and mortise structures at both ends of the prefabricated compartment, and fixedly connect with adjacent compartments through high-strength bolts.

[0018] Furthermore, the dynamic support system includes:

[0019] Arrange a group of micropiles on the top and sides of the utility tunnel, and dynamically adjust the pile spacing according to the geological model;

[0020] Embed hydraulic telescopic rods in the micropiles, and remotely control the support force of the piles through the ground console;

[0021] Set liftable pads at the bottom of the utility tunnel, and real-time adjust the bearing capacity of the foundation through hydraulic jacks.

[0022] Furthermore, the waterproof monitoring network includes:

[0023] Spray waterproof coating on the inner wall of the utility tunnel to form a continuous waterproof film;

[0024] A resistive humidity sensor is buried below the waterproof membrane, and data is fed back to the central control room through a wireless transmission module;

[0025] When detecting water seepage, a micro grouting pump is triggered to inject repair materials into the designated area.

[0026] Furthermore, the modular pipeline installation process includes:

[0027] U-shaped chutes are preset in the prefabricated cabin, and pipeline components are transported through rail trolleys;

[0028] A magnetic adsorption type quick connector is used to connect the pipeline to the bolts at the cabin interface;

[0029] RFID tags are pasted on the pipeline surface, and the installation position is verified by scanning with a handheld terminal.

[0030] Furthermore, the step-by-step trenchless construction includes:

[0031] The multi-stage guided hole drilling technology is adopted, and the hole formation is completed in five steps through a stepped reaming bit. The increment rate of the reaming diameter for each step is controlled at 30% - 40%;

[0032] A formation stress monitoring device is arranged at the front end of the reaming bit. The stress data of the surrounding rock of the hole wall is collected in real time through a micro pressure sensor and synchronously transmitted to the ground control center;

[0033] The reaming speed and the flow rate of the mud pump are dynamically adjusted according to the stress data. When the stress value exceeds the set threshold, the bit rotation compensation system is started;

[0034] During the backhaul process of the prefabricated cabin, the axis deviation is monitored by a laser inclinometer, and the attitude of the cabin is adjusted in real time by a hydraulic deviation correction device.

[0035] Furthermore, the stepped reaming bit includes a three-layer structure of a center cutter, a positive scraper, and a negative scraper. The extension length of each layer of cutter head is independently controlled by a hydraulic telescopic rod; a temperature sensor is buried inside the cutter head matrix. When the cutting temperature exceeds 180°C, the built-in coolant circulation system is triggered; a spiral diversion groove is arranged at the tail of the bit, and the diversion groove is communicated with the bentonite mud delivery pipe.

[0036] Furthermore, the hydraulic deviation correction device is installed on the hydraulic cylinders at the front and rear ends of the prefabricated cabin; the hydraulic cylinders are connected to the cabin through spherical hinges; the working pressure and flow rate of the hydraulic system are controlled by a proportional valve; the deviation correction displacement is fed back in real time by a laser rangefinder; the deviation correction action is linked with the advancing speed of the cabin, and the advancing speed is adjusted according to the deviation correction amount.

[0037] Compared with the prior art, the beneficial effects of the present invention are as follows. A construction method for a multi-compartment integrated urban underground pipe gallery structure adaptable to various geological conditions of the present invention guides the prefabrication of compartments and dynamic support through a three-dimensional geological model, and realizes precise non-excavation construction in complex strata by combining a stepped reaming bit and a hydraulic deviation correction device, significantly improving geological adaptability; the prefabrication process of the compartment body adopts fiber-reinforced concrete and concave-convex tenon and mortise structures, enhancing the shear strength of the joints and reducing the on-site operation volume; the intelligent grouting system and graphene-modified waterproof membrane cooperate with distributed sensors to achieve millimeter-level positioning and self-repair of leakage, and the waterproof life is extended by 50%; the modular pipeline installation combines magnetic connectors and RFID verification to improve the assembly efficiency by 60%; the cloud database and AI algorithm optimize the construction parameters, reduce manual intervention, and the comprehensive energy efficiency is increased by 30%. The overall solution breaks through the bottlenecks of traditional processes such as difficult settlement control, poor waterproof durability, and low construction efficiency in complex strata, and realizes safe, efficient, and green construction of urban underground pipe galleries. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] By reading the following detailed description of the preferred embodiments, various other advantages and benefits will become clear to those of ordinary skill in the art. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present invention. Moreover, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0039] Figure 1 It is a flowchart of the construction method for a multi-compartment integrated urban underground pipe gallery structure adaptable to various geological conditions according to an embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0040] The exemplary embodiments of the present invention will be described in more detail below with reference to the drawings. Although the exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to enable a more thorough understanding of the present invention and to fully convey the scope of the present invention to those skilled in the art. It should be noted that, without conflict, the embodiments and features in the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0041] Referring to Figure 1 As shown, in some embodiments of the present application, a construction method for a multi-compartment integrated urban underground pipe gallery structure adaptable to various geological conditions includes:

[0042] Establish a three-dimensional geological model, obtain formation parameters through core drilling and geophysical exploration, divide different geological regions, and mark the positions of weak interlayers, water-rich layers, and faults;

[0043] Plan the spatial layout of multi-cabin corridors, determine the structural dimensions according to the functional requirements of the cabins, adopt the cabin body prefabrication process, and complete the main structure of each cabin in the factory;

[0044] Implementing trenchless construction in stages, using horizontal directional drilling technology to penetrate complex strata, laying prefabricated cabins simultaneously, and achieving flexible connections between cabins through adjustable connectors;

[0045] Build a dynamic support system, set up an intelligent grouting system outside the pipe gallery, monitor the grouting filling effect in real time through pressure sensors and adjust the grouting parameters;

[0046] Integrated waterproof monitoring network, pre-buried distributed optical fiber sensors on the inner wall of the tunnel, real-time detection of water leakage location and triggering self-healing material response;

[0047] Establish a construction parameter database, upload geological data, support parameters, and construction progress to the cloud platform simultaneously, and optimize subsequent construction plans through AI algorithms;

[0048] A modular pipeline installation process is adopted, standardized interfaces are reserved in the prefabricated cabin, and pipeline assembly and debugging are carried out according to functional areas.

[0049] Specifically, the implementation steps of the three-dimensional geological model construction and construction planning are as follows: Acquisition of formation parameters: Use a diamond drill bit (diameter 150mm) to drill and coring, the hole depth is 5m below the design depth of the pipeline corridor, and obtain core samples for geotechnical tests to determine parameters such as water content, density, and compressive strength. Simultaneously carry out geophysical exploration using seismic reflection wave method (source spacing 10m) and high-density electrical method (electrode spacing 5m) to establish a three-dimensional resistivity model. Geological regional division: Based on the K-means clustering algorithm, the strata are divided into weak interlayer areas (compression modulus ≤5MPa), water-rich layers (permeability coefficient ≥1×10 -4 cm / s), stable stratum area, marking fault fracture zone (width>3m). BIM collaborative design: Use Revit software to build a three-dimensional model of the pipeline corridor, and divide the power cabin (C50 fiber concrete, steel fiber content 1.5%) and gas cabin (C40 fiber concrete, basalt fiber content 0.8%) into functional areas, with 10% redundant space reserved. The prefabricated cabin body is vibrated and formed by steel molds, and a built-in fiber grating sensor monitors the temperature field changes during the solidification process.

[0050] It is understandable that the K-means clustering algorithm is used to divide the geological area and combine it with finite element analysis to accurately identify weak interlayers (compression modulus ≤ 5 MPa) and water-rich layers (permeability coefficient ≥ 1×10 -4cm / s), guiding the dynamic adjustment of the spacing of the micropile group (1.2 m in soft strata and 1.8 m in stable strata), greatly reducing the construction risks in complex strata and significantly reducing the support redundancy compared with the traditional empirical design. The BIM collaborative design reserves 10% redundant space, and the prefabrication process in compartments reduces the on-site formwork time. The production cycle of the power cabin (C50 fiber concrete) and the gas cabin (C40 fiber concrete) is greatly shortened, and the overall construction period is significantly advanced compared with the traditional in-situ casting process. The prefabricated cabin is equipped with fiber Bragg grating sensors to monitor the temperature field during the solidification process, and the curing parameters are adjusted in real time. The standard deviation of the concrete strength is controlled within ±2 MPa, and the qualified rate is greatly improved compared with the traditional process.

[0051] Specifically, the implementation steps of the prefabrication process in compartments: Concrete preparation: For the power cabin, P.O42.5 cement, 5 - 25 mm crushed stones, medium sand, a fiber volume admixture of 1.5% steel fiber + 0.5% basalt fiber, a water-cement ratio of 0.38, and a slump controlled at 180 ± 20 mm are used. The steel formwork is vibrated using a three-dimensional vibrating table (frequency 40 Hz, amplitude 0.4 mm), and the vibration time is 3 minutes. Prefabricated cabin forming: A circular groove is preset on the outside (depth 15 mm, width 30 mm), and a water-swelling waterstop strip (swelling rate 200%) and a Φ8 mm grouting pipe (spacing 100 mm) are embedded. Concave and convex tenon and mortise structures are processed at both ends (tenon height 30 mm, mortise depth 25 mm), and the contact surface is coated with silane impregnating agent. Connection process: High-strength bolts (grade 10.9, diameter 24 mm) are tightened three times using a torque wrench (initial tightening 300 N·m, re-tightening 500 N·m, final tightening 700 N·m), elastic washers (material 65Mn) are used to prevent loosening, and a detachable inspection window (300×300 mm) is set at the connection.

[0052] It can be understood that the power cabin adopts a hybrid system of 1.5% steel fiber + 0.5% basalt fiber, which improves the compressive strength and significantly enhances the crack resistance compared with ordinary concrete. The shear strength of the tenon and mortise connection joint is 85 MPa, which is greatly improved compared with the in-situ cast joint. The steel formwork is vibrated using a three-dimensional vibrating table (frequency 40 Hz, amplitude 0.4 mm), which improves the concrete density and shortens the forming cycle of the prefabricated cabin.

[0053] Specifically, the implementation steps of the step-by-step non-excavation construction and intelligent deviation correction: Pilot hole drilling: The first drill is a Φ300 mm pilot hole, and bentonite mud is used for shaft protection (density 1.2 g / cm 3, the funnel viscosity is 35 s), and the drilling speed is controlled at 0.5 m / min. Successively replace the stepped reaming bit (Φ450 mm → Φ600 mm → Φ800 mm → Φ1000 mm → Φ1200 mm), and the reaming diameter increases by 35% for each step. Formation stress monitoring: Install a micro pressure sensor (model YG-300, measuring range 0-5 MPa) at the front end of the drill bit to collect surrounding rock stress data in real time and transmit it to the ground control center through the RS485 bus. When the stress > 3 MPa, trigger the rotation compensation system (PID control algorithm), the cutter head rotation speed increases by 15%, and the mud pump flow rate increases by 20%. Hull backhaul and deviation correction: The backhaul speed of the prefabricated hull is controlled at 1.2 m / min, and a laser inclinometer (accuracy ±0.1°) monitors the axis deviation in real time. The hydraulic deviation correction device (4 groups of hydraulic cylinders, cylinder diameter 120 mm, stroke 300 mm) is connected to the hull through a ball joint, and the proportional valve controls the working pressure (25 MPa). The propulsion speed is automatically adjusted according to the deviation correction amount (when Δ ≤ 20 mm, the speed is 1.0 m / min; when Δ > 20 mm, it drops to 0.5 m / min).

[0054] It can be understood that the stepped reaming is completed in five steps (Φ300 → Φ1200 mm), the reaming diameter increases by 35% for each layer, and the tool wear amount is reduced (the wear amount of the traditional single-step reaming process is 2.5 mm / 100 m). The laser inclinometer (accuracy ±0.1°) monitors the axis deviation in real time, and the hydraulic deviation correction device (control algorithm: v = 0.2Δx + 1.0) controls the deviation within ±20 mm, improving the accuracy compared with the traditional manual adjustment. The formation stress monitoring triggers the rotation compensation system (PID control algorithm), the reaming speed increases, the mud pump flow rate is optimized, and the comprehensive work efficiency is improved compared with the traditional process.

[0055] Specifically, the implementation steps of the dynamic support system: Arrangement of micro-pile groups: Install Φ200 mm micro-piles at the top and sides, and the pile spacing is dynamically adjusted according to the finite element analysis results (spacing in soft formations is 1.2 m, and in stable formations is 1.8 m). Install hydraulic telescopic rods (stroke 300 mm, thrust 500 kN) inside the piles, and remotely control the support force through the PLC system. Adjustment of the bearing capacity of the foundation: Set a liftable cushion plate (size 1.5 m × 1.5 m) at the bottom, and an array of hydraulic jacks (model YQD-500) monitors the foundation reaction force in real time (sensor model PT124G-111), and automatically compensates when the reaction force deviation > 10%. Intelligent grouting system: Inject quick-setting and slightly expanding grout (water-cement ratio 0.5, expansion rate 0.02%) into the annular gap outside the pipe gallery. The pressure sensor (accuracy ±0.1 MPa) monitors the filling effect in real time and automatically replenishes the grout when the flow rate is insufficient.

[0056] It can be understood that the hydraulic telescopic rods of the micro-pile group (stroke 300 mm, thrust 500 kN) compensate for the formation deformation in real time, and the maximum surface settlement is reduced compared with the traditional support. Foundation stability: The liftable cushion plate (area 2.25 m2 ) Through the adjustment of the hydraulic jack (model YQD-500) array, the deviation of the base reaction force is controlled within ±8%, avoiding structural cracking caused by uneven settlement. The filling density of the intelligent grouting system (slurry mix ratio: water-cement ratio 0.5 + expansion agent 0.02%) is improved compared with the traditional grouting process, reducing the risk of later leakage.

[0057] Specifically, the implementation steps of the waterproof monitoring network and the self-healing system: Waterproof membrane construction: Spray 2 mm thick graphene-modified waterproof coating (solid content 95%, elongation at break ≥400%) on the inner wall, using high-pressure airless spraying process (pressure 20 MPa) to form a continuous waterproof membrane. Leakage monitoring: Install resistive humidity sensors (accuracy ±3% RH, spacing 5 m) under the waterproof membrane, and transmit data to the central control room through LoRa wireless module. When the humidity > 80% RH, trigger the micro grouting pump (flow rate 5 L / min) to inject nano repair material (particle size ≤50 nm, initial setting time 15 min) into the specified area. Distributed optical fiber sensing: Arrange distributed optical fiber (model SMF-28) along the axis of the pipe gallery, and use OTDR technology (spatial resolution 1 m) to detect the location of water leakage in real time, with a positioning accuracy of ±0.5 m.

[0058] It can be understood that the waterproof performance: The graphene-modified waterproof coating (solid content 95%, elongation at break 450%) forms a 2 mm thick continuous film, with an impermeability grade of P12, and the service life is extended compared with ordinary coatings. Leakage response: The positioning error of the resistive humidity sensor (accuracy ±3% RH) for leakage points is ≤0.5 m. The micro grouting pump (flow rate 5 L / min) injects nano repair material (initial setting time 15 min), with a repair success rate of 98% and a reduction in maintenance costs. Intelligent monitoring: Distributed optical fiber sensing (OTDR technology, spatial resolution 1 m) monitors the entire pipe gallery in real time, and the early warning response time for water leakage is improved compared with manual inspection efficiency.

[0059] Specifically, the implementation steps of modular pipeline installation and intelligent control: Pipeline transportation and installation: Set U-shaped chutes (chute depth 50 mm, width 80 mm) on the inner wall of the prefabricated cabin, and use track trolleys (load capacity 2 t) to transport pipeline components. Use magnetic connectors (suction force ≥800 N) to achieve quick connection, and the installation error is ≤5 mm. Installation verification: Paste RFID tags (ISO11784 / 85 standard) on the pipelines, scan and verify the position through a handheld terminal (model MT9000), and automatically generate an installation report in combination with the BIM model. Construction parameter optimization: Establish a cloud database, integrate geological data, support parameters, and progress data, use LSTM neural network to predict construction risks, and optimize parameters such as grouting pressure and reaming speed, with an error rate < 5%.

[0060] It can be understood that the U-shaped chute (groove depth 50 mm) is matched with the track trolley (load capacity 2 t), and the installation time of the pipeline for a single-section cabin is shortened to 2 hours, which is improved compared with the traditional process. The installation error of the magnetic suction connector (suction force ≥ 800 N) is ≤ 5 mm, and the accuracy rate of the verification position of the RFID tag (ISO11784 / 85) is 100%, reducing the rework cost in the later stage by 40%. The LSTM neural network predicts construction risks, optimizes the grouting pressure (error rate < 5%) and the reaming speed (optimization range 15% - 20%), reduces resource waste by 35%, and reduces the carbon emission intensity by 30%.

[0061] Specifically, the implementation steps of the stepped reaming bit and the hydraulic deviation correction device: Reaming bit design: The center cutter (diameter 150 mm) uses a cemented carbide cutter head. The positive scraping cutter (inclination angle 30°) and the negative scraping cutter (inclination angle 45°) independently control the extension length (0 - 50 mm) through hydraulic telescopic rods. A temperature sensor (model DS18B20) is buried in the cutter head matrix, and when the temperature exceeds the limit (>180℃), the coolant circulation system (flow rate 10 L / min) is triggered. The spiral diversion groove (pitch 300 mm, groove depth 80 mm) at the tail of the drill bit is connected to the mud pipe, and the slag discharge efficiency is increased by 30%. Hydraulic deviation correction device: The hydraulic cylinder is connected to the cabin through a spherical hinge (material QT500 - 7), and the hydraulic system (working pressure 25 MPa, flow rate 15 L / min) is controlled by a proportional valve. The laser rangefinder (accuracy ±2 mm) real-time feeds back the deviation correction displacement, and the propulsion speed is linked with the deviation correction amount (control algorithm: v = k·Δx + v0, k = 0.2).

[0062] It can be understood that the three-layer cutter head (center cutter + positive scraping cutter + negative scraping cutter) independently controls the extension length (0 - 50 mm) through the hydraulic telescopic rod, adapts to the formation with uneven hardness, and extends the tool life. The temperature sensor (DS18B20) triggers the coolant circulation (flow rate 10 L / min), and the cutting temperature is stabilized below 150℃, avoiding tool annealing failure and improving the construction continuity. The response time of the hydraulic deviation correction device (proportional valve control algorithm) is improved compared with the traditional mechanical deviation correction, ensuring the smoothness of the axis of the pipe gallery.

[0063] It should be noted that:

[0064] In the specification provided here, a large number of specific details are described. However, it can be understood that the embodiments of the present application can be practiced without these specific details. In some instances, the well-known structures and technologies are not shown in detail so as not to obscure the understanding of this specification.

[0065] In addition, those skilled in the art can understand that although some embodiments described herein include certain features included in other embodiments rather than other features, the combination of the features of different embodiments means that it is within the scope of the present application and forms different embodiments.

[0066] As described above, it is only the preferred specific implementation manner of the present application. However, the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed in the present application should be covered within the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims described above.

Claims

1. A construction method for an urban multi-compartment integrated underground pipe gallery structure adapted to various geological conditions, characterized in that: include: Establish a three-dimensional geological model, obtain formation parameters through core drilling and geophysical detection, and divide the geological area into weak interlayers, water-rich layers and faults; Plan the spatial layout of multi-cabin corridors, determine the structural dimensions according to the functional requirements of the cabins, and adopt the cabin body prefabrication process; Implementing trenchless construction in stages, using horizontal directional drilling technology to penetrate the ground, laying prefabricated cabins simultaneously and achieving flexible connections between cabins through adjustable connectors; Build a dynamic support system, set up a grouting system outside the pipe gallery, monitor the grouting filling effect in real time through pressure sensors and adjust the grouting parameters; Integrated waterproof monitoring network, pre-buried distributed optical fiber sensors on the inner wall of the tunnel, real-time detection of water leakage location and triggering self-healing material response; Establish a construction parameter database, upload geological data, support parameters, and construction progress to the cloud platform simultaneously, and optimize the construction plan through AI algorithms; A modular pipeline installation process is adopted, standardized interfaces are reserved in the prefabricated cabin, and pipeline assembly and debugging are carried out according to functional areas.

2. The construction method of an urban multi-compartment comprehensive underground pipe gallery structure adapted to various geological conditions according to claim 1 is characterized in that: The sub-cabin body prefabrication process comprises: Fiber reinforced concrete of different strength grades is selected according to the cabin function and is vibrated and formed using steel molds; An annular groove is preset on the outside of the prefabricated cabin to install water-expandable water stop strips and grouting pipes; Concave and convex mortise and tenon structures are set at both ends of the prefabricated cabin and fixedly connected to the adjacent cabin by high-strength bolts.

3. The construction method of an urban multi-compartment comprehensive underground pipe gallery structure adapted to various geological conditions according to claim 1 is characterized in that: The dynamic support system comprises: Micro pile groups are arranged on the top and sides of the tunnel, and the spacing between the piles is dynamically adjusted according to the geological model; A hydraulic telescopic rod is embedded in the micro pile, and the pile support force is remotely controlled through a ground control console; A liftable pad is set at the bottom of the tunnel, and the base bearing capacity is adjusted in real time through hydraulic jacks.

4. The construction method of an urban multi-compartment comprehensive underground pipe gallery structure adapted to various geological conditions according to claim 1 is characterized in that: The waterproof monitoring network includes: Spray waterproof coating on the inner wall of the pipe gallery to form a continuous waterproof membrane; A resistive humidity sensor is buried under the waterproof membrane, and the data is fed back to the central control room through a wireless transmission module; When water leakage is detected, the micro-grouting pump is triggered to inject repair materials into the designated area.

5. The construction method of an urban multi-compartment comprehensive underground pipe gallery structure adaptable to various geological conditions according to claim 1 is characterized in that: The modular pipeline installation process includes: A U-shaped chute is preset in the prefabricated cabin, and the pipeline components are transported by rail pulleys; A magnetic quick connector is used to connect the pipeline to the bolts of the cabin interface; RFID tags are affixed to the surface of the pipeline and the installation position is verified by scanning with a handheld terminal.

6. The construction method of an urban multi-compartment comprehensive underground pipe gallery structure adaptable to various geological conditions according to claim 1 is characterized in that: The step-by-step trenchless construction includes: The multi-stage pilot hole drilling technology is adopted, and the hole forming is completed in five stages through the stepped hole enlarging drill bit, and the incremental rate of the hole enlarging diameter in each stage is controlled at 30% to 40%; A formation stress monitoring device is installed at the front end of the reaming drill bit to collect the stress data of the surrounding rock of the borehole wall in real time through a micro pressure sensor and transmit it synchronously to the ground control center; Dynamically adjust the hole expansion speed and mud pump flow rate according to stress data, and start the drill bit rotation compensation system when the stress value exceeds the set threshold; During the process of towing back the prefabricated cabin, the axis deviation is monitored by a laser inclinometer, and the cabin posture is adjusted in real time using a hydraulic correction device.

7. The construction method of an urban multi-compartment comprehensive underground pipe gallery structure adapted to various geological conditions according to claim 6 is characterized in that: The stepped hole-reaming drill bit comprises a three-layer structure of a center cutter, a positive scraper and a reverse scraper, and the extension length of each layer of cutter heads is independently controlled by a hydraulic telescopic rod; a temperature sensor is buried inside the cutter head base, and a built-in coolant circulation system is triggered when the cutting temperature exceeds 180°C; a spiral guide groove is arranged at the tail of the drill bit, and the guide groove is connected to the bentonite mud delivery pipe.

8. The construction method of an urban multi-compartment comprehensive underground pipe gallery structure adaptable to various geological conditions according to claim 6 is characterized in that: The hydraulic deviation correction device is installed on the hydraulic cylinders at the front and rear ends of the prefabricated cabin; the hydraulic cylinders are connected to the cabin through ball joints; the working pressure and flow of the hydraulic system are controlled by a proportional valve; the deviation correction displacement is fed back in real time through a laser rangefinder; the deviation correction action is linked to the cabin propulsion speed, and the propulsion speed is adjusted according to the deviation correction amount.

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