Shield tunneling method using subway crossover arrangement

Abstract

The present application belongs to the field of subway construction technology, and particularly relates to a shield construction method using a subway crossover arrangement; by arranging a starting shaft above a left line or a right line, a shield battery car track yard is arranged using a reserved line space of a subway crossover, highlighting the turning of a battery car group, and the construction of left and right line tunnels of the subway is completed in one starting shaft, which is safe in construction and can be used for shield construction work without affecting the internal structure construction of an existing station; the method is simple in operation and convenient for construction, can better connect and sequence shield construction rail transportation according to actual conditions on site, can solve the problem of turning of shield starting excavation transportation vehicles by using an existing station crossover to add one construction passage, and is very beneficial to speeding up construction progress and reducing safety risks, and has a significant effect on indirectly improving economic benefits.

Description

Technical Field

[0001] This invention belongs to the field of subway construction technology, specifically a shield tunneling method utilizing subway crossover lines. Background Technology

[0002] A subway crossover is a section of rail used to connect two parallel steel rails, allowing a subway train traveling on one route to switch to another. Currently, subway construction in China is developing rapidly. In the initial excavation and excavation of the left and right lines of subway shield tunnels, the conventional practice is to use a combination of double starting shafts and the excavation port for initial excavation.

[0003] Chinese patent CN106640098B discloses a method for constructing a subway tunnel using a shield tunneling machine, comprising the following steps: Step 1: Excavating foundation pits or constructing shafts at the beginning and end of the tunnel to serve as assembly and disassembly chambers for the shield tunneling machine and its equipment; setting up several intermediate maintenance workshops between the assembly and disassembly chambers in the middle of the tunnel; Step 2: Constructing a shield tunneling machine exit on the inner wall of the assembly chamber, and installing the shield tunneling machine base and the rear seat for shield propulsion inside; Step 3: Assembling the shield tunneling machine inside the assembly chamber, and after equipment debugging, the shield tunneling machine is pushed out of the assembly chamber through the shield tunneling machine exit, and tunnel excavation construction begins; Step 4: During tunnel excavation construction, the shield tunneling machine uses a local compression method, controlling the amount of excavated soil based on the disturbance of the strata and the deformation of the surface. The advantage of this invention is that it overcomes the shortcomings of existing technologies and has a reasonable and novel structural design.

[0004] Due to site constraints, traffic diversions, and other reasons, the hoisting openings of dual launching shafts are sometimes limited. In situations where only one launching shaft opening is used to complete the left and right tunnels, the key to the success of completing the left and right tunnels of shield tunneling lies in how to scientifically and rationally utilize one hoisting opening, excavation opening, crossover line, and vehicle yard.

[0005] Therefore, the present invention provides a shield tunneling method utilizing a subway crossover layout. Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, at least one technical problem raised in the background art is solved.

[0007] The technical solution adopted by this invention to solve its technical problem is: a shield tunneling method utilizing a subway crossover, the construction method comprising the following steps:

[0008] A1: Construction preparation: preparation of construction equipment, preparation of construction site, preparation before construction;

[0009] A2: Layout of the shield tunneling starting shaft: Strictly abide by all documents issued by the owner and relevant departments, and arrange the site according to the principles of cleanliness, aesthetics, applicability and economy, and do a good job in site drainage, site hardening and production electricity and water supply.

[0010] A3: Construction organization of the left and right tunnel lines: planning for the construction of the left and right tunnel lines, tunnel transportation and marshalling, and organization of tunnel tunneling crossover turnouts and track transportation.

[0011] A4: Left-line tunnel boring machine (TBM) start-up construction: Strictly follow the design, standards and specifications to carry out the following tasks: TBM shaft end reinforcement, start-up base installation, TBM assembly and debugging, reaction frame installation, portal removal, portal sealing installation, TBM attitude verification, negative ring assembly, TBM penetration into the working face, establishment of earth pressure balance, and trial excavation.

[0012] A5: Shield left line reception and covert turn-around construction: preliminary preparation, shield left line arrival and reception, shield separation from the supporting trolley, shield body turn-around; trolley and battery vehicle turn-around construction;

[0013] A6: Turnout assembly and connection: Mark the center position of the turnout sleeper on the top of each rail with white paint, then transport it to the material hoisting point by truck, hoist it to the bottom of the unloading port by crane, and transport it to the working face by battery-powered vehicle for manual handling and assembly. During assembly, first arrange the sleepers according to the spacing of the turnout sleepers, install the fasteners, then install the rail support frame and track gauge rod on the turnout position, and connect the various rail components.

[0014] A7: Rail Installation: Surveyors mark the centerline of the track at 10-15m intervals and mark height reference points on the side of the track. Then, level the track base and mark the placement of sleepers. Place the sleepers on the track base at the designated centerline and elevation according to the marks, ensuring the sleeper centerline is perpendicular to the track centerline. After the sleepers are properly placed, place the rails, connecting the rail sections with fishplates and bolts as they are placed. After nailing one side of the rails, nail the other side of the rails according to the track gauge.

[0015] A8: Transportation construction of the right tunnel of the shield tunnel: The slag removal and material feeding of the left and right tunnels of the shield section are all carried out in the same shield launching shaft;

[0016] A9: Receiving and moving the shield machine to the right line: The receiving and moving of the shield machine to the right line is the same as the turning operation. No turning is required. Just move it to the left line working shaft, disassemble and lift it out. The back cover equipment is lifted out in sequence and removed from the site for construction.

[0017] This construction method is simple to operate and easy to carry out. It can better connect and transfer the rail transport during shield tunneling construction according to the actual site conditions. It can add a construction channel by utilizing the existing crossover line in the station, which can solve the problem of passing between transport vehicles at the beginning of shield tunneling. It is very beneficial to speed up the construction progress and reduce safety risks, and has a significant effect on indirectly improving economic benefits.

[0018] Preferably, the method for organizing track transportation of the shield tunnel crossover turnout described in A3 includes the following steps:

[0019] B1: Train 1 enters the tunnel boring machine to unload materials and load slag; Train 2 waits on one side of the double-turnout.

[0020] B2: The tunnel boring machine stops tunneling. Train 1 has finished unloading and loading slag. Train 1 returns to the launching shaft to unload and load slag. Train 2 waits on one side of the double turnout for Train 1 to return to the launching shaft and then enters the tunnel boring machine.

[0021] B3: Train 2 enters the tunnel boring machine via the switch to unload material and load slag; Train 1 finishes unloading and loading material at the starting shaft and returns to the switch to wait.

[0022] B4: The tunnel boring machine stops tunneling, and Train 2 returns to the launching shaft via the switch to unload soil and load materials; Train 1 waits for Train 2 to return to the launching shaft before entering the tunnel boring machine to unload materials and load slag; the tunneling cycle is repeated to complete the tunneling construction.

[0023] Preferably, the method for turning the tunnel boring machine body around as described in A5 includes the following steps:

[0024] C1: Use a cleaning device to clean the mud, dirt and other debris off the steel plate, and apply grease to the steel plate;

[0025] C2: Weld the bracket to the tunnel boring machine at the front and middle section with 20mm thick steel plates, using 506 welding rods; use electric hoists and jacks to pull the tunnel boring machine to the left front a certain distance, so that people and equipment can turn around to the sides of the bracket for construction.

[0026] C3: Weld four support seats on both sides of the shield body, made of 20mm thick steel plates and welded with 506 welding rods; weld three 600*570mm plates with a spacing of 150mm backward from 700mm from the cutting ring on the front support seat, with ribs added at both ends; weld a 400*600mm steel plate to the bottom of the arc plate for the lifting plate; weld an arc plate forward from 3500mm from the tail of the shield on the rear support seat.

[0027] C4: Weld I-beam steel blocks onto a steel plate as jack reaction supports. Use four 120T jacks to push the bracket near its optimal jacking position as needed, allowing the bracket to move and rotate. During the jacking process, steel pipe supports can be added between the bracket and the jacks to increase the jack stroke. After jacking a certain length, adjust the position of the jack reaction support steel plate so that the bracket and the tunnel boring machine can move along a predetermined trajectory.

[0028] C5: Weld steel blocks at the corners of the bracket's rotation center, and use jacks to push the bracket near the optimal jacking position to form a rotational couple, so that the bracket rotates around the fixed axis as the rotation center along a predetermined rotational trajectory.

[0029] C6: After the tunnel boring machine rotates and moves to the left line, adjust and fix the bracket in the predetermined position, and replace the tail brush according to the damage condition of the tail brush.

[0030] Preferably, the cleaning device in C1 includes tires, a T-shaped bracket, a storage box, an elastic push plate, and an oiling plate; tires are rotatably mounted on both ends of the bottom of the T-shaped bracket, and a storage box is fixedly connected between the corresponding top surfaces of the two T-shaped brackets. The storage box is filled with grease, and a steel plate is placed between the two tires. An elastic push plate is hinged to one side of the bottom surface of the storage box, and the bottom surface of the elastic push plate slides in contact with the top surface of the steel plate. An oiling plate is fixedly connected to the other side of the bottom surface of the storage box, and the oiling plate has multiple oil holes inside. The top of each oil hole connects to the interior of the storage box, and the bottom of each oil hole penetrates the bottom of the oiling plate. During operation, when the tunnel boring machine body turns around, it is necessary to... The bracket needs to be welded to the tunnel boring machine at the front and middle sections using steel plates. Due to the large amount of mud at the construction site, a lot of mud adheres to the surface of the steel plates. It is necessary to clean the mud off the surface of the steel plates and apply grease to them. During operation, the T-shaped bracket is pushed to make the tires roll, causing the storage box to slide over the top surface of the steel plate. The elastic pusher plate, under its own elastic force, presses against the top surface of the steel plate, removing the mud from the surface of the steel plate. At the same time, the grease inside the storage box slides down from the grease hole, flows from the grease hole to the surface of the steel plate, and is then smoothed by the grease application plate. This completes the cleaning and grease application of the steel plate, reducing the workload of the workers and improving their work efficiency.

[0031] Preferably, a grease strip is fixedly attached to the bottom of the side of the grease plate away from the center of the storage box. The bottom surface of the grease strip slides in engagement with the top surface of the steel plate. Multiple inclined plates are fixedly attached to the bottom arc surface of the grease strip. The bottom of the inclined plates slides in engagement with the top surface of the steel plate. Adjacent inclined plates are distributed in a fish-scale pattern, and there are gaps between adjacent inclined plates. During operation, when grease flows from the oil hole to the surface of the steel plate, it is smoothed by the grease plate, then scraped and pushed outward by the inclined plates, and then smoothed by the grease strip, thereby improving the uniformity of grease application.

[0032] Preferably, the bottom of the oiling plate near the center of the storage box is fixedly connected to multiple inserts. Each insert has a sliding hole in its center, which penetrates the oiling plate and connects to the oil hole. A sliding column is slidably installed inside the sliding hole. A pull rope is fixedly connected between the end of the sliding column and the center of the elastic push plate. Multiple first-order circular grooves are formed on the outer ring of the insert. A first-order push rod is slidably installed inside each first-order circular groove. The end of the first-order push rod away from the first-order circular groove is fixedly connected to an outer ring insert of the sliding column. A spring is fitted around the outer ring of the first-order push rod. During operation, when the spring... When the elastic push plate contacts the top surface of the steel plate and bends and slides outward, it pulls the pull rope, causing the slide column to slide upward along the slide hole. This causes the first push rod to slide out of the first circular groove, compressing the spring and exposing the bottom of the oil hole, allowing the grease inside the storage box to flow out from the oil hole. When the elastic push plate disengages from the steel plate, it resets, causing the pull rope to loosen and the spring to reset. This pushes the first push rod into the first circular groove, causing the slide column to slide towards the oil hole, blocking the oil hole and preventing the grease from flowing out. This reduces grease waste, increases grease utilization, and saves costs.

[0033] Preferably, a second circular groove is formed at the center of the bottom end of the sliding column. A second push rod is slidably installed inside the second circular groove. A push block is fixedly connected to the bottom end of the second push rod. An annular rubber block is fixedly connected between the push block and the sliding column. The annular rubber block is fitted around the outer ring of the second push rod. During operation, when the sliding column slides towards the oil hole, it pushes the push block to contact the applicator strip, pushes the push block closer to the sliding column, and pushes the second push rod to slide into the second circular groove. The push block and the sliding column squeeze the annular rubber block, causing the annular rubber block to protrude outward, blocking and sealing the sliding hole, thereby further improving the blocking effect on the oil hole and further reducing the probability of grease leakage.

[0034] Preferably, a magnet plate is embedded in the bottom of the elastic push plate, and a long cotton rope is fixed to the bottom surface of the magnet plate. An iron wire is fixed inside the long cotton rope, and the top end of the iron wire is fixed to the bottom surface of the magnet plate. In the humid environment of the construction site, the surface of the steel plate is prone to rust. When the elastic push plate pushes out the mud, the grinding stone at the bottom of the elastic push plate grinds the top surface of the steel plate, removing the rust layer. The iron filings generated by grinding are swept away by the long cotton rope. At the same time, the magnet of the magnet plate is conducted to the iron wire, causing the iron filings to be attracted to the surface of the long cotton rope, thereby improving the cleaning effect on the surface of the steel plate and thus improving the welding effect of the steel plate.

[0035] Preferably, a plurality of spring rods are fixedly connected to the bottom of the elastic push plate near the middle of the storage box. A sliding ball is fixedly connected to the bottom end of each spring rod, and the bottom of the sliding ball slides in contact with the top surface of the steel plate. A hammer is fixedly connected to the middle of the side of the spring rod near the elastic push plate. During operation, when the elastic push plate slides against the top surface of the steel plate, the sliding ball slides against the top surface of the steel plate, pushing the spring rod to bend. When the elastic force of the spring rod is greater than the friction between the sliding ball and the steel plate, the spring rod resets, causing the hammer to strike the elastic push plate and shake off the dirt adhering to the surface of the elastic push plate. When the elastic push plate detaches from the steel plate, the spring rod resets, causing the sliding ball and hammer to connect to the elastic push plate, causing the elastic push plate to vibrate and the long cotton rope to shake off the adsorbed iron filings, thereby further improving the cleaning efficiency of the elastic push plate and the long cotton rope.

[0036] The beneficial effects of this invention are as follows:

[0037] 1. The shield tunneling method utilizing a subway crossover, as described in this invention, involves setting up a launching shaft above the left or right line and utilizing the reserved track space of the subway crossover to arrange the shield tunneling vehicle's rail yard, emphasizing the turnaround of the vehicle sets. Both the left and right subway tunnel construction are completed in a single launching shaft, resulting in good construction safety. Shield tunneling can be carried out without affecting the internal structure construction of existing stations. This method is simple to operate and convenient for construction. It allows for better connection and transfer of rail transport during shield tunneling based on actual site conditions. Utilizing the existing station crossover adds a construction passage, solving the problem of passing between shield tunneling vehicles during launching and excavation. This is highly beneficial for accelerating construction progress, reducing safety risks, and indirectly improving economic benefits.

[0038] 2. The shield tunneling method using a subway crossover arrangement described in this invention involves setting up a storage box, an elastic pusher plate, and an oiling plate. The elastic pusher plate, under its own elastic force, presses against the top surface of the steel plate, removing dirt from the surface of the steel plate. Simultaneously, grease inside the storage box slides downwards through the oil holes, flowing onto the surface of the steel plate and then being smoothed by the oiling plate. This completes the cleaning and grease application of the steel plate, reducing the workload of workers and improving their work efficiency. Attached Figure Description

[0039] The invention will now be further described with reference to the accompanying drawings.

[0040] Figure 1 This is a flowchart of the construction method of the present invention;

[0041] Figure 2 This is a flowchart of the track transportation organization for the shield tunneling crossover turnout of the present invention;

[0042] Figure 3 This is a flowchart of the method for turning the shield tunnel body around according to the present invention;

[0043] Figure 4 This is a schematic diagram of the construction method of the present invention;

[0044] Figure 5 This is the shield tunneling left and right line construction planning diagram of the present invention;

[0045] Figure 6 This is a perspective view of Embodiment 1 of the present invention;

[0046] Figure 7 This is a cross-sectional view of Embodiment 1 of the present invention;

[0047] Figure 8 yes Figure 7 Enlarged view of a portion of point A in the middle;

[0048] Figure 9 yes Figure 7 Enlarged view of a section at point B in the middle;

[0049] Figure 10 yes Figure 9 Enlarged view of a section at point C;

[0050] Figure 11 This is a partial structural diagram of the straight groove plate according to Embodiment 2 of the present invention;

[0051] In the diagram: 1. Tire; 2. T-shaped bracket; 3. Storage box; 4. Elastic push plate; 5. Oiling plate; 6. Steel plate; 7. Oil hole; 8. Coating strip; 9. Inclined plate; 10. Mounting seat; 11. Sliding hole; 12. Sliding column; 13. Pull rope; 14. No. 1 circular groove; 15. No. 1 push rod; 16. Spring; 17. No. 2 circular groove; 18. No. 2 push rod; 19. Push block; 20. Annular rubber block; 21. Magnet plate; 22. Long cotton rope; 23. Iron wire; 24. Elastic rod; 25. Sliding ball; 26. Hammer; 27. Straight groove plate; 28. Screw; 29. ​​Blocking nut; 30. Locking nut; 31. Turnout; 32. Capped station; 33. Tunnel boring machine; 34. Crossover; 35. Working shaft; 36. Train 1; 37. Train 2; 38. Launching shaft. Detailed Implementation

[0052] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0053] Example 1

[0054] like Figure 1 , Figure 4 and Figure 5 As shown in the embodiment of the present invention, a shield tunneling method utilizing a subway crossover arrangement includes the following steps:

[0055] A1: Construction Preparation: Construction equipment preparation includes two electric carts and one gantry crane to meet the tunnel boring machine (TBM) transportation needs. 43kg reusable rails, each 6m long, will be used inside the tunnel, with rail connections using pressure plates. 20# H-steel sleepers will be fabricated on-site. Turnout 31 will be a four-rail, two-track turnout. Due to the high precision requirements of turnout 31 fabrication, it will be factory-made, trial-assembled, and inspected before being transported to the site for installation and commissioning. Construction site preparation involves a planar simulation based on the actual site design drawings. The construction site's flatness... The longitudinal profile dimensions, the horizontal and vertical profile dimensions and facilities of the tunnel boring machine 33 and its base, the flatness of the station floor, and whether there are upturned beams and water collection wells at the starting and receiving ends are all major factors to be considered in actual construction and need to be reinforced and treated in advance. Before construction, the track plane control network is first surveyed and set out, then the auxiliary benchmarks are surveyed and set out. The turnout 31 is then trial-assembled in the processing plant. After the parts are checked and confirmed to be complete and in the correct position, it can be transported to the construction site for unloading. During transportation, the switch rails are tied to the stock rails to avoid damage to the switch rails.

[0056] A2: Layout of Shield Tunneling Launch Shaft 38: Strictly comply with all documents issued by the owner and relevant departments, and arrange the site according to the principles of cleanliness, aesthetics, applicability, and economy. Ensure proper site drainage, site hardening, and the provision of electricity and water for production. The site layout mainly considers the arrangement of the gantry crane track beam, slag pit, car wash pit, charging room, sedimentation tank, mixing station, material warehouse, duty room, monitoring room, and segment stacking, etc., required for construction operations. Equip the site with emergency supplies, access control, fire protection facilities, etc., and strictly follow relevant regulations and standardized construction.

[0057] A3: Construction Organization of the Left and Right Lines of the Tunnel Boring Machine (TBM): The TBM 33 will start from the left line at working shaft 35 and be received at the capping station 32. The TBM 33 will then make a closed turn and work together with the crossover 34. After the TBM 33's back sleeve has turned and been adjusted, the right line excavation will begin, arriving at the starting station for reception. After reception, the TBM 33 will be moved horizontally to the left line working shaft 35 for hoisting and removal. Tunnel transportation and marshalling: Battery-powered vehicles will be used for transporting the tunnel boring machine (TBM). Excavation of slag... There are 4 dump trucks, 1 mortar storage tank, and 1 segment truck, with a total length of 35m. That is, a tractor + 4 dump trucks + 1 mortar truck + 1 segment truck, in two trains. The shield tunneling crossover 34 turnout 31 and track transportation organization, the shield tunneling starting shaft 38 station of the section tunnel is a single soil hoisting port, and the shield receiving station is a closed structural capping station 32. In order to ensure the continuity of material transportation, the crossover 34 is used to lay turnout 31 at the shield receiving station to carry out single-tunnel double-train battery car transportation organization.

[0058] A4: Shield Tunneling Machine 33 Left Line Starting Excavation and Construction: Strictly adhere to design, standards, and specifications in carrying out tasks such as shield shaft end reinforcement, starting base installation, shield machine 33 assembly and commissioning, reaction frame installation, portal removal, portal sealing installation, shield attitude verification, negative ring assembly, shield penetration into the working face, establishment of earth pressure balance, and trial excavation. Before starting, when positioning the shield base, the shield machine 33 axis should be parallel to the tunnel design axis, and the shield centerline can be appropriately raised compared to the design axis. When positioning the reaction frame and the first negative ring segment, strictly control the installation accuracy of the reaction frame and negative ring to ensure the shield's starting attitude conforms to the tunnel design alignment. When installing the negative ring segment and pushing it out of the shield tail, timely support and reinforcement should be provided to prevent segment sinking or loss of roundness. The eccentric force that may be generated during shield advancement should also be considered, and the support should be... Stable and reliable; during the initial launch phase, due to the relatively small thrust and soft strata, special attention must be paid to preventing the shield from tilting. 43mm steel rails can be used to extend the guide rails on the launch support. The bottom of the rails is supported by structural steel and the shield guide rails are fixedly installed. To ensure that the shield machine 33 does not twist on the base, anti-twist supports need to be welded to the shield machine 33 shell. Before the shield machine 33 launches, the tunneling parameters should be set according to the strata conditions. After tunneling, monitoring should be strengthened, monitoring data should be analyzed and fed back in a timely manner, and the shield tunneling parameters should be dynamically adjusted. During tunneling, earth pressure and excavated soil volume should be strictly controlled, and close monitoring should be maintained to prevent soil settlement and heave. Strict control of the shield attitude and shield parameters is essential. At the same time, attention should be paid to the maintenance of all parts of the shield machine 33. For battery-powered vehicle transportation, the battery-powered vehicle head should be at the rear, the tunnel segments at the front, and it should be transported into the shield machine 33 in a reverse manner.

[0059] A5: Shield Tunneling Left Line Receiving and Turnaround Construction: Preliminary Preparation: Clean the shield receiving shaft, level the shaft with fine sand, and then lay a 20mm thick steel plate on top of the sand. At every meter along the steel plate joints, bevel and weld, then grind until the steel plate surface is flush. Pre-measure and position the receiving bracket, launching position, and reaction frame position. The receiving bracket rail surface height should be 20mm lower than the design height; place Φ273 steel pipes between the steel plate and the receiving bracket. The height of the steel pipes should be determined based on the actual elevation after the shield shaft is laid with steel plates. The receiving bracket's axis and longitudinal direction should be reinforced with 20# I-beams and locked to the main station structure to prevent slippage when the shield machine enters the tunnel. Upon arrival of the left line shield, install the tunnel portal sealing device. Install the receiving guide rails, adjust the receiving bracket's posture, add a support top at the top, and place steel plates and steel pipes at the bottom for support. After reinforcing the bracket, apply paint to the rails. Apply lubricating oil; after the shield machine 33 advances to the point of exiting the tail shield, push the shield machine 33 until the cutterhead is fully extended out of the support frame and suspended in the air by adding segments and supports; after the shield machine 33 safely enters the tunnel, immediately clean the soil under the receiving support frame; separate the shield from the rear supporting trolley, retract all hydraulic cylinders, confirm the stopping position, clean the grouting pipeline, cut off the power, close the oil circuit valves, and clean the mortar tank and trolley area; weld the lifting support at the front middle of the shield, use the hydraulic pump station to lift the shield as a whole, remove all the fixings of the support frame, and remove the steel pipe support at the bottom; before stopping the machine, conduct a comprehensive inspection of the shield and record the parts that need maintenance, mark the connecting pipelines, and ensure that there are two marks at each end of each pipeline, and hang the pipeline marks with identification tags; when removing the belt, take into account the vulcanization of the belt when starting the next launch, cut at the severely worn joints, and pay attention to the neatness of the cut. After cutting the belt conveyor, the three belt conveyor sections in front of the No. 1 trolley are dismantled, the belt frame on the trolley is separated, and the segments are transported to the shaft opening by a segment car and lifted out. The double track beam, traction rod, and pipelines connecting the shield body and the rear supporting equipment are dismantled. The shield body is turned around. The trolley and battery car are turned around. After the shield machine 33 is turned around, the rear supporting equipment of the trolley and the battery car group are turned around. First, the battery car group is returned to the starting shaft 38. The connection between each section of the trolley is separated. The gantry crane of the starting shaft 38 is used to turn the trolley and battery car in sequence on the ground and place them back on the underground track. The battery car head is facing forward and the segments are transported at the tail. The trolley is placed in sequence on the battery car and fixed firmly. It is transported to the tail of the shield machine 33 using the crossover 34 yard. The trolley turning sequence is: connecting bridge, No. 1 trolley, No. 2 trolley, No. 3 trolley, No. 4 trolley, No. 5 trolley. After the connection and debugging are completed, the right line of the other line is started and excavated.

[0060] A6: Turnout 31 Assembly and Connection: Mark the center position of the turnout sleeper on the top of each rail with white paint, then transport it by truck to the material hoisting point, where it is lifted by crane to below the unloading port, and then transported by battery-powered vehicle to the working face for manual assembly. During assembly, first arrange the sleepers according to the sleeper spacing, install the fasteners, then install the rail support frame and gauge tie rod at the turnout position, and connect all rail components; adjust the level using a right-angle gauge and a universal gauge according to the benchmark. First, place the right-angle gauge on the main rail, and adjust it with the support frame to center the level bubble of the right-angle gauge; adjust the rail position according to the turnout 31 benchmark and check it according to the centerline, then use the universal gauge to determine the position of the other rail and adjust the level; use the offset to control the position of the curve main rail, and after adjustment, use the gauge to control the level and centerline to determine the accurate position of the side rail; after each group of rails is erected and adjusted, install steel pipe supports for reinforcement to prevent the adjusted rails from deforming due to linkage or accidental collision;

[0061] A7: Rail Installation: Surveyors should nail a centerline marker every 10-15m and mark height reference points on the side of the track. Then, level the track base and mark the placement of sleepers. Place the sleepers on the track base at the designated centerline and elevation according to the marks. The sleeper centerline should be perpendicular to the track centerline. The end of the sleeper closest to the sidewalk should be placed neatly according to the guide rope. The allowable error for the sleepers should not exceed 50mm, and the centerline deviation should not exceed 30mm. After the sleepers are properly placed, place the rails, connecting the rail sections with fishplates and bolts as they are placed. The bolt heads of the four bolts on a fishplate should not be placed on the same side of the rail. Generally, the bolt heads on both sides should be placed on the inner side of the rail centerline, and the two middle bolt heads should be placed on the outer side of the rail. The fishplate should be tightly attached to the rail. After nailing one side of the rail, nail the other side of the rail according to the track gauge.

[0062] A8: Transportation Construction of the Right Line Tunnel: Both the left and right lines of the shield tunnel section undergo muck removal and material feeding within the same shield launching shaft 38. When the shield machine 33 is excavating, a screw conveyor unloads the muck into muck cars. Simultaneously, an electric trolley pulls the muck car forward slowly until it is full. In the early stages of muck car loading, the preceding material car detaches from the muck car to unload tunnel segments and materials. Once the muck car is full, it reconnects with the material car, and the electric trolley pulls it to the working shaft 35, where it is lifted out by a 45t gantry crane. After unloading the muck, the empty car is returned to the shaft, and the materials needed inside the tunnel are hoisted from the feed port. The excavated soil from one ring of tunnel segments is transported away at once. Two trains are equipped. Considering the maximum transport distance, when one train is full of muck and ready to be transported out, the other train is already loaded with materials and parked on the passing line. Before the tunnel segments are installed, this train can reach the working face and continue to excavate the next ring. In this way, there is always a train to ensure muck removal during the tunnel boring process, thereby ensuring the construction progress.

[0063] A9: Shield right line reception, translation and hoisting: The shield machine 33 right line reception, translation and operation is the same as the dark turn-around operation. No turn-around is required, only translation is required. The translation is moved to the left line working shaft 35, disassembled and hoisted out. The back cover equipment is hoisted out in sequence and removed from the site for construction.

[0064] This construction method is simple to operate and easy to carry out. It can better connect and transfer the rail transport during shield tunneling construction according to the actual site conditions. It can add a construction channel by utilizing the existing crossover line in the station, which can solve the problem of passing between transport vehicles at the beginning of shield tunneling. It is very beneficial to speed up the construction progress and reduce safety risks, and has a significant effect on indirectly improving economic benefits.

[0065] like Figure 2 , Figure 4 and Figure 5 As shown in Figure A3, the method for organizing track transportation of the shield tunneling crossover 34 turnout 31 includes the following steps:

[0066] B1: Train 1 (36) enters tunnel boring machine (33) to unload material and load slag; Train 2 (37) waits on one side of double turnout (31);

[0067] B2: Tunnel boring machine 33 stops tunneling, train 1 36 finishes unloading and loading of slag, and train 1 36 returns to the launching shaft 38 to unload and load materials; train 2 37 waits on one side of the double turnout 31 for train 1 36 to return to the launching shaft 38 before entering tunnel boring machine 33.

[0068] B3: Train 2 37 enters the tunnel boring machine 33 through switch 31 to unload material and load slag; Train 1 36 finishes unloading soil and loading material at the starting shaft 38 and returns to switch 31 to wait.

[0069] B4: Tunnel boring machine 33 stops tunneling, and train 2 37 returns to the launching shaft 38 via switch 31 to unload soil and load materials; train 1 36 waits for train 2 37 to return to the launching shaft 38 before entering tunnel boring machine 33 to unload materials and load slag; repeat the tunneling cycle to complete the tunneling construction.

[0070] like Figure 3 , Figure 4 and Figure 5 As shown in Figure A5, the method for turning the tunnel boring machine body around includes the following steps:

[0071] C1: Use a cleaning device to clean the mud, dirt and other debris off the steel plate, and apply grease to the steel plate;

[0072] C2: Weld the bracket to the tunnel boring machine 33 at the front middle section with a 20mm thick steel plate, using 506 welding rods; use electric hoists and jacks to pull the tunnel boring machine 33 to the left front a certain distance, so that people and equipment can turn around to the sides of the bracket for construction.

[0073] C3: Weld four support seats on both sides of the shield body, made of 20mm thick steel plates and welded with 506 welding rods; weld three 600*570mm plates with a spacing of 150mm backward from 700mm from the cutting ring on the front support seat, with ribs added at both ends; weld a 400*600mm steel plate to the bottom of the arc plate for the lifting plate; weld an arc plate forward from 3500mm from the tail of the shield on the rear support seat.

[0074] C4: Weld I-beam steel blocks onto the steel plate as jack reaction supports. Use four 120T jacks to push the bracket near the optimal jacking position as needed, so that the bracket can move and rotate. During the jacking process, steel pipe supports can be added between the bracket and the jacks to increase the jack stroke. After jacking a certain length, adjust the position of the jack reaction support steel plate so that the bracket and the tunnel boring machine 33 can move along the predetermined trajectory.

[0075] C5: Weld steel blocks at the corners of the bracket's rotation center, and use jacks to push the bracket near the optimal jacking position to form a rotational couple, so that the bracket rotates around the fixed axis as the rotation center along a predetermined rotational trajectory.

[0076] C6: After the tunnel boring machine 33 rotates and moves to the left line, adjust and fix the bracket in the predetermined position, and replace the tail brush according to the damage of the tail brush.

[0077] like Figures 6 to 7 As shown, the cleaning device in C1 includes tires 1, T-shaped brackets 2, storage boxes 3, elastic push plates 4, and oiling plates 5. Tires 1 are rotatably mounted on both ends of the bottom of the T-shaped brackets 2. Storage boxes 3 are fixedly connected between corresponding sides of the top of the T-shaped brackets 2 on both sides. The storage boxes 3 are filled with grease. A steel plate 6 is placed between the tires 1 on both sides. An elastic push plate 4 is hinged to one side of the bottom surface of the storage box 3, and the bottom surface of the elastic push plate 4 slides against the top surface of the steel plate 6. An oiling plate 5 is fixedly connected to the other side of the bottom surface of the storage box 3. Multiple oil holes 7 are opened inside the oiling plate 5. The top of each oil hole 7 connects to the interior of the storage box 3, and the bottom of each oil hole 7 penetrates the bottom of the oiling plate 5. During operation, the tunnel boring machine 33 body turns around. During operation, the bracket needs to be welded to the shield machine 33 at the front and middle sections using steel plate 6. Due to the large amount of mud at the construction site, a large amount of mud will adhere to the surface of steel plate 6. It is necessary to clean the mud off the surface of steel plate 6 and apply grease to it. During operation, the T-shaped bracket 2 is pushed to make the tire 1 roll, causing the storage box 3 to slide over the top surface of steel plate 6. The elastic push plate 4 presses against the top surface of steel plate 6 under its own elastic force, removing the mud from the surface of steel plate 6. At the same time, the grease inside the storage box 3 slides down from the grease hole 7, flows from the grease hole 7 to the surface of steel plate 6, and is then smoothed by the grease-applying plate 5. This completes the cleaning and grease-applying work of steel plate 6, reducing the workload of the workers and improving their work efficiency.

[0078] like Figure 8 As shown, a grease strip 8 is fixedly attached to the bottom of the side of the grease plate 5 away from the middle of the storage box 3. The bottom surface of the grease strip 8 slides in contact with the top surface of the steel plate 6. Multiple inclined plates 9 are fixedly attached to the bottom arc surface of the grease strip 8. The bottom of the inclined plates 9 slides in contact with the top surface of the steel plate 6. The adjacent inclined plates 9 are distributed in a fish scale pattern, and there are gaps between adjacent inclined plates 9. During operation, when the grease flows from the oil hole 7 to the surface of the steel plate 6, it is smoothed by the grease plate 5, then scraped and pushed outward by the inclined plates 9, and then smoothed by the grease strip 8, thereby improving the uniformity of grease application.

[0079] like Figure 8 As shown, a plurality of inserts 10 are fixedly connected to the bottom of the side of the oiling plate 5 near the middle of the storage box 3. A sliding hole 11 is formed in the middle of each insert 10, penetrating the oiling plate 5 and connecting to the oil hole 7. A sliding column 12 is slidably installed inside the sliding hole 11. A pull rope 13 is fixedly connected between the end of the sliding column 12 and the middle of the elastic push plate 4. A plurality of first-order circular grooves 14 are formed on the outer ring of the insert 10. A first-order push rod 15 is slidably installed inside each first-order circular groove 14. The end of the first-order push rod 15 away from the first-order circular groove 14 is fixedly connected to the outer ring insert of the sliding column 12. A spring 16 is sleeved on the outer ring of the first-order push rod 15. During operation, when the elastic push plate 4 contacts the top surface of the steel plate 6 and bends and slides outward, it pulls the pull rope 13, causing the slide column 12 to slide upward along the slide hole 11. This causes the first push rod 15 to slide out of the first circular groove 14, compressing the spring 16 and exposing the bottom of the oil hole 7, allowing the grease inside the storage box to flow out from the oil hole 7. When the elastic push plate 4 disengages from the steel plate 6, it resets, causing the pull rope 13 to relax and the spring 16 to reset. This pushes the first push rod 15 into the first circular groove 14, causing the slide column 12 to slide towards the oil hole 7, blocking the oil hole 7 and preventing the grease from flowing out. This reduces grease waste, improves grease utilization, and saves costs.

[0080] like Figure 8 As shown, a second circular groove 17 is provided in the middle of the bottom end of the sliding column 12. A second push rod 18 is slidably installed inside the second circular groove 17. A push block 19 is fixedly connected to the bottom end of the second push rod 18. An annular rubber block 20 is fixedly connected between the push block 19 and the sliding column 12. The annular rubber block 20 is fitted around the outer ring of the second push rod 18. During operation, when the sliding column 12 slides toward the oil hole 7, it pushes the push block 19 to contact the coating strip 8, pushes the push block 19 closer to the sliding column 12, and pushes the second push rod 18 to slide into the second circular groove 17. The push block 19 and the sliding column 12 squeeze the annular rubber block 20, causing the annular rubber block 20 to protrude outward, blocking and sealing the sliding hole 11, thereby further improving the blocking effect on the oil hole 7, and further reducing the probability of grease leakage.

[0081] like Figures 9 to 10 As shown, a magnet plate 21 is embedded in the bottom of the elastic push plate 4. A long cotton rope 22 is fixed to the bottom surface of the magnet plate 21. An iron wire 23 is fixed inside the long cotton rope 22. The top end of the iron wire 23 is fixed to the bottom surface of the magnet plate 21. In the humid environment of the construction site, the surface of the steel plate 6 is prone to rust. When the elastic push plate 4 pushes out the mud, the grinding stone at the bottom of the elastic push plate 4 grinds the top surface of the steel plate 6 to remove the rust layer on the top surface of the steel plate 6. The iron filings generated by grinding are swept away by the long cotton rope 22. At the same time, the magnet of the magnet plate 21 is conducted to the iron wire 23, so that the iron filings are attracted to the surface of the long cotton rope 22, thereby improving the cleaning effect on the surface of the steel plate 6 and thus improving the welding effect of the steel plate 6.

[0082] like Figure 9 As shown, a plurality of spring rods 24 are fixedly connected to the bottom of the elastic push plate 4 near the middle of the storage box 3. A sliding ball 25 is fixedly connected to the bottom end of each spring rod 24, and the bottom of the sliding ball 25 slides against the top surface of the steel plate 6. A hammer 26 is fixedly connected to the middle of the side of the spring rod 24 near the elastic push plate 4. During operation, when the elastic push plate 4 slides against the top surface of the steel plate 6, the sliding ball 25 slides against the top surface of the steel plate 6, pushing the spring rod 24 to bend. When the spring rod 24... When the force is greater than the friction between the ball bearing 25 and the steel plate 6, the spring rod 24 resets, causing the hammer 26 to strike the elastic push plate 4, shaking off the dirt adhering to the surface of the elastic push plate 4. When the elastic push plate 4 detaches from the steel plate 6, the spring rod 24 resets, causing the ball bearing 25 and the hammer 26 to connect the elastic push plate 4, making the elastic push plate 4 vibrate, causing the long cotton rope 22 to shake, shaking off the adsorbed iron filings, thereby further improving the cleaning efficiency of the elastic push plate 4 and the long cotton rope 22.

[0083] Example 2

[0084] like Figure 11 As shown in the comparative embodiment one, another embodiment of the present invention is as follows: a straight groove plate 27 is fixedly connected to the center of the bottom surface of the storage box 3, and a screw 28 is rotatably installed on the side of the elastic push plate 4 near the straight groove plate 27. The screw 28 slides through the straight groove of the straight groove plate 27, a blocking nut 29 is threadedly installed in the middle of the screw 28, and a locking nut 30 is threadedly installed at the end of the screw 28. The blocking nut 29 and the locking nut 30 are respectively located on both sides of the straight groove plate 27. During operation, the range of sliding of the screw 28 in the straight groove of the straight groove plate 27 is controlled by the cooperation of the blocking nut 29 and the locking nut 30, thereby controlling the bending range of the elastic push plate 4, which makes it easier for the operator to control the force of the elastic push plate 4 scraping the top surface of the steel plate 6.

[0085] During operation: When the tunnel boring machine 33 turns around, it pushes the T-shaped support 2 to make the tire 1 roll, and makes the storage box 3 slide over the top surface of the steel plate 6. The elastic push plate 4 presses against the top surface of the steel plate 6 under its own elastic force, which drives the pull rope 13 to stretch and makes the sliding column 12 slide upward along the sliding hole 11. This causes the first push rod 15 to slide out from the first circular groove 14, which compresses the spring 16 and exposes the bottom of the oil hole 7, allowing the grease inside the storage box to flow out from the oil hole 7. The elastic push plate 4 removes the dirt from the surface of the steel plate 6. At the same time, the grease inside the storage box 3 slides downward from the oil hole 7. The grease flows from the oil hole 7 to the surface of the steel plate 6, is then smoothed by the oiling plate 5, and then pushed outward by the inclined plate 9. Finally, it is smoothed by the coating strip 8, which improves the uniformity of the grease application.

[0086] At the same time, the grinding stone at the bottom of the elastic push plate 4 grinds the top surface of the steel plate 6, removing the rust layer on the top surface of the steel plate 6. The iron filings generated by grinding are swept away by the long cotton rope 22. At the same time, the magnet of the magnet plate 21 conducts to the iron wire 23, causing the iron filings to be attracted to the surface of the long cotton rope 22. When the elastic push plate 4 slides against the top surface of the steel plate 6, the sliding ball 25 slides against the top surface of the steel plate 6, pushing the spring rod 24 to bend. When the elastic force of the spring rod 24 is greater than the friction between the sliding ball 25 and the steel plate 6, the spring rod 24 returns to its original position, driving the hammer 26 to strike the elastic push plate 4, shaking off the dirt attached to the surface of the elastic push plate 4.

[0087] When the elastic push plate 4 disengages from the steel plate 6, the spring rod 24 resets, causing the sliding ball 25 and the hammer 26 to engage the elastic push plate 4, making the elastic push plate 4 vibrate and causing the long cotton rope 22 to shake, shaking off the adsorbed iron filings. At the same time, the elastic push plate 4 resets, causing the pull rope 13 to relax and the spring 16 to reset, pushing the first push rod 15 into the first circular groove 14, causing the sliding column 12 to slide towards the oil hole 7, pushing the push block 19 to contact the coating strip 8, pushing the push block 19 closer to the sliding column 12, and pushing the second push rod 18 to slide into the second circular groove 17. The push block 19 and the sliding column 12 squeeze the annular rubber block 20, causing the annular rubber block 20 to protrude outward, blocking and sealing the sliding hole 11, preventing grease from flowing out, and reducing grease waste. Thus, the cleaning and grease application of the steel plate 6 is completed, reducing the workload of the workers and improving their work efficiency.

[0088] The terms "front," "back," "left," "right," "top," and "bottom" all refer to the figures in the accompanying drawings. Figure 1 Based on the perspective of the observer, the side of the device facing the observer is defined as the front, the left side of the observer is defined as the left, and so on.

[0089] In the description of this invention, it should be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and 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 limiting the scope of protection of this invention.

[0090] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A shield tunneling method utilizing a subway crossover, characterized in that: The construction method includes the following steps: A1: Construction preparation: preparation of construction equipment, preparation of construction site, preparation before construction; A2: Shield launching shaft (38) layout: Strictly abide by the various documents issued by the owner and relevant departments, and arrange the site according to the principles of cleanliness, beauty, applicability and economy, and do a good job in site drainage, site hardening and production electricity and water supply. A3: Construction organization of shield tunneling left and right lines: construction planning of shield tunneling left and right lines, tunnel transportation and grouping, shield tunneling crossover (34) turnout (31) and track transportation organization; A4: Construction of the left line of the tunnel boring machine (33): Strictly follow the design, standards and specifications to carry out the work of reinforcing the tunnel shaft end, installing the starting base, assembling and debugging the tunnel boring machine (33), installing the reaction frame, removing the tunnel portal, installing the tunnel portal seal, verifying the shield attitude, assembling the negative ring, the shield entering the working face, establishing earth pressure balance and test tunneling. A5: Shield left line reception and covert turn-around construction: preliminary preparation, shield left line arrival and reception, shield separation from the supporting trolley, shield body turn-around; trolley and battery vehicle turn-around construction; A6: Turnout (31) Assembly and Connection: Mark the center position of the turnout sleeper with white paint on the top of each rail, then transport it to the material hoisting point by truck, hoist it to the bottom of the unloading port by crane, and transport it to the working face by electric vehicle for manual handling and assembly. When assembling, first arrange the sleepers according to the sleeper spacing, install the fasteners, then install the rail support frame and track gauge tie rod on the turnout position, and connect each rail component; A7: Rail Installation: Surveyors mark the centerline of the track every 10-15m and mark height reference points on the side of the track. Then, level the track base and mark the placement of sleepers. Place the sleepers on the designated track centerline and elevation track base according to the marked points. The sleeper centerline should be perpendicular to the track centerline. After the sleepers are properly placed, place the rails, connecting the rail sections with fishplates and bolts as they are placed. After nailing one side of the rail, nail the other side of the rail according to the track gauge. A8: Transportation construction of the right tunnel of the shield: The slag discharge and material feeding of the left and right lines of the shield section are carried out in the same shield launching shaft (38); A9: Shield right line reception, horizontal movement and hoisting out: The shield machine (33) right line reception, horizontal movement and dark turning operation are the same. No turning is required. Only horizontal movement is required. Horizontally move to the left line working shaft (35), disassemble and hoist out. Then the supporting facilities are hoisted out in sequence and removed from the site for construction. The method for turning the tunnel boring machine body as described in A5 includes the following steps: C1: Use a cleaning device to clean the mud and dirt off the steel plate and apply grease to the steel plate; C2: Weld the bracket to the tunnel boring machine (33) at the front and middle end with a 20mm thick steel plate, and use 506 welding rods for welding; use electric hoists and jacks to pull the tunnel boring machine (33) to the left front a certain distance so that people and equipment can turn around to the sides of the bracket for construction. C3: Weld four support seats on both sides of the shield body, made of 20mm thick steel plates and welded with 506 welding rods; weld three 600*570mm plates with a spacing of 150mm backward from 700mm from the cutting ring on the front support seat, with ribs added at both ends; weld a 400*600mm steel plate to the bottom of the arc plate for the lifting plate; weld an arc plate forward from 3500mm from the tail of the shield on the rear support seat. C4: Weld I-beam steel blocks onto the steel plate as jack reaction supports. Use four 120T jacks to push the bracket near the optimal jacking position of the bracket as needed, so that the bracket can move and rotate. During the jacking process, add steel pipe support between the bracket and the jack to increase the jack stroke. After jacking a certain length, adjust the position of the jack reaction support steel plate so that the bracket and the tunnel boring machine (33) can move along the predetermined trajectory. C5: Weld steel blocks at the corners of the bracket's rotation center, and use jacks to push the bracket near the optimal jacking position to form a rotational couple, so that the bracket rotates around the fixed axis as the rotation center along a predetermined rotational trajectory. C6: After the tunnel boring machine (33) rotates and moves to the left line, adjust and fix the bracket at the predetermined position, and replace the tail brush according to the damage of the tail brush.

2. The shield tunneling method utilizing a subway crossover as described in claim 1, characterized in that: The method for organizing track transport for the shield tunneling crossover (34) turnout (31) described in A3 includes the following steps: B1: Train 1 (36) enters the tunnel boring machine (33) to unload materials and load slag; Train 2 (37) waits on one side of the double turnout (31); B2: The tunnel boring machine (33) stops tunneling, and Train 1 (36) finishes unloading and loading slag. Train 1 (36) returns to the launching shaft (38) to unload soil and load materials. Train 2 (37) waits on one side of the double turnout (31) for Train 1 (36) to return to the launching shaft (38) before entering the tunnel boring machine (33). B3: Train 2 (37) enters the tunnel boring machine (33) through the switch (31) to unload materials and load slag; Train 1 (36) finishes unloading soil and loading materials at the starting shaft (38) and returns to the switch (31) to wait; B4: The tunnel boring machine (33) stops tunneling, and train 2 (37) returns to the starting shaft (38) via the turnout (31) to unload soil and load materials; train 1 (36) waits for train 2 (37) to return to the starting shaft (38) before entering the tunnel boring machine (33) to unload materials and load slag; repeat the tunneling cycle to complete the tunneling construction.

3. The shield tunneling method utilizing a subway crossover as described in claim 1, characterized in that: The cleaning device described in C1 includes tires (1), T-shaped brackets (2), storage boxes (3), elastic push plates (4), and oiling plates (5); tires (1) are rotatably mounted on both ends of the bottom of the T-shaped brackets (2), and storage boxes (3) are fixed between the corresponding sides of the top of the T-shaped brackets (2) on both sides. The storage boxes (3) are filled with grease, and steel plates (6) are placed between the tires (1) on both sides. An elastic push plate (4) is hinged to one side of the bottom surface of the storage box (3), and the bottom surface of the elastic push plate (4) slides with the top surface of the steel plate (6). An oiling plate (5) is fixed to the other side of the bottom surface of the storage box (3), and multiple oil holes (7) are opened inside the oiling plate (5). The top of the oil holes (7) is connected to the inside of the storage box (3), and the bottom of the oil holes (7) penetrates the bottom of the oiling plate (5).

4. A shield tunneling method utilizing a subway crossover as described in claim 3, characterized in that: The bottom of the oiling plate (5) away from the middle of the storage box (3) is fixed with an application strip (8). The bottom surface of the application strip (8) slides in contact with the top surface of the steel plate (6). Multiple inclined plates (9) are fixed to the bottom arc surface of the application strip (8). The bottom of the inclined plates (9) slides in contact with the top surface of the steel plate (6). The adjacent inclined plates (9) are distributed in a fish scale pattern, and there is a gap between the adjacent inclined plates (9).

5. A shield tunneling method utilizing a subway crossover as described in claim 3, characterized in that: The bottom of the oiling plate (5) near the middle of the storage box (3) is fixed with multiple inserts (10). The middle of the insert (10) is provided with a sliding hole (11). The sliding hole (11) passes through the oiling plate (5) and is connected to the oil hole (7). A sliding column (12) is slidably installed inside the sliding hole (11). A pull rope (13) is fixed between the end of the sliding column (12) and the middle of the elastic push plate (4). The outer ring of the insert (10) is provided with multiple first circular grooves (14). A first push rod (15) is slidably installed inside the first circular groove (14). The end of the first push rod (15) away from the first circular groove (14) is fixedly connected to the outer ring insert of the sliding column (12). A spring (16) is sleeved on the outer ring of the first push rod (15).

6. A shield tunneling method utilizing a subway crossover as described in claim 5, characterized in that: The bottom center of the sliding column (12) is provided with a second circular groove (17), and a second push rod (18) is slidably installed inside the second circular groove (17). A push block (19) is fixedly connected to the bottom end of the second push rod (18), and an annular rubber block (20) is fixedly connected between the push block (19) and the sliding column (12). The annular rubber block (20) is fitted around the outer ring of the second push rod (18).

7. A shield tunneling method utilizing a subway crossover as described in claim 3, characterized in that: The bottom of the elastic push plate (4) is inlaid with a magnet plate (21), and a long cotton rope (22) is fixed to the bottom surface of the magnet plate (21). An iron wire (23) is fixed to the inside of the long cotton rope (22), and the top of the iron wire (23) is fixed to the bottom surface of the magnet plate (21).

8. A shield tunneling method utilizing a subway crossover as described in claim 7, characterized in that: Multiple spring rods (24) are fixedly connected to the bottom of the elastic push plate (4) near the middle of the storage box (3). A sliding ball (25) is fixedly connected to the bottom end of the spring rod (24). The bottom of the sliding ball (25) slides in cooperation with the top surface of the steel plate (6). A hammer (26) is fixedly connected to the middle of the side of the spring rod (24) near the elastic push plate (4).

9. A shield tunneling method utilizing a subway crossover as described in claim 8, characterized in that: A straight groove plate (27) is fixedly connected to the middle of the bottom surface of the storage box (3). A screw (28) is rotatably installed on the side of the elastic push plate (4) near the straight groove plate (27). The screw (28) slides through the straight groove of the straight groove plate (27). A blocking nut (29) is threaded in the middle of the screw (28). A locking nut (30) is threaded at the end of the screw (28). The blocking nut (29) and the locking nut (30) are located on both sides of the straight groove plate (27).

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