A method of installing sliding reinforcement

Abstract

The application discloses a sliding type reinforcing steel bar mounting method and relates to the field of reinforcing steel bar construction.The sliding type reinforcing steel bar mounting method comprises the following steps: construction preparation: relying on the support system of the second lining construction of the inclined section of the tunneling tunnel, the erection and acceptance of the slide support are completed based on the slope; slide rail construction: selecting reinforcing steel bars as the main materials of the slide rails; at least two reference lines are arranged on the top surface of the slide support at intervals, and two reference lines are located on the two side edges of the slide support; on the transverse direction of the tunnel, the reinforcing steel bars are laid down along the reference lines section by section; the supporting legs are welded below the reinforcing steel bars, and the supporting legs are inserted into the disc buckle vertical rod pipes of the slide support; reinforcing steel bar transportation; reinforcing steel bar construction; and construction connection.The slide rails replace manual transportation, greatly shorten the reinforcing steel bar transportation time, reduce the labor intensity, speed up the reinforcing steel bar binding process progress, promote the second lining structure to be closed into a ring as soon as possible, and effectively reduce the construction risk of the tunneling tunnel.

Description

Technical Field

[0001] This invention relates to the field of steel reinforcement construction, and specifically to a sliding steel reinforcement installation method. Background Technology

[0002] Currently, the secondary lining construction of the sloping sections of the ancillary structures of underground railway stations generally adopts the traditional construction process of manual handling combined with full-span scaffolding support. The specific situation is as follows:

[0003] 1. Outdated steel bar transportation methods: After the steel bar raw materials are processed into shaped arc semi-finished products, they are completely transported to the binding point by hand. The slope section has a gradient of 30° and a length of 42m. The operating space is narrow, making it difficult and time-consuming for manual handling.

[0004] 2. Low construction efficiency: Manual handling of steel bars is labor-intensive and slow in process connection, resulting in a long steel bar binding cycle, which delays the progress of the secondary lining structure to form a ring and increases the construction risk of the mined tunnel. Summary of the Invention

[0005] The technical problem to be solved by this invention is that manual handling of steel bars in mined tunnels is labor-intensive and has low construction efficiency. The purpose is to provide a sliding steel bar installation method to solve the above problems.

[0006] This invention is achieved through the following technical solution:

[0007] A sliding rebar installation method includes the following steps:

[0008] Construction preparation: Relying on the support system of the secondary lining construction of the slope section of the mined tunnel, the slide support was erected and accepted based on the slope.

[0009] Slide rail construction: Steel bars are selected as the main material for slide rails; at least two baselines are set at intervals on the top surface of the slide rail support, and two of the baselines are located on both sides of the slide rail support; steel bars are laid down section by section along the baseline in the transverse direction of the tunnel; support legs are welded below the steel bars and inserted into the disc buckle upright tube of the slide rail support.

[0010] Steel bar transportation: Steel bars are transported downwards to the construction area using sliding rails;

[0011] Reinforcing steel construction: Reinforcing steel work is carried out using the slide rail support as a high-altitude work platform and the slide rails located on both sides of the slide rail support as the edge guardrails of the high-altitude work platform; and the slide rails located on both sides of the slide rail support also serve as the fastening points for safety belts.

[0012] Construction coordination: After the reinforcement work is completed, the slide rails are removed and recycled for reuse.

[0013] In one possible implementation, based on construction preparation, the following steps are included:

[0014] Inspection of the foundation of the mined tunnel, drainage, debris removal and foundation bearing capacity assessment, and inspection and repair of the support system;

[0015] The foundation support and several stepped layers are erected from top to bottom. Each stepped layer includes several base frames located at the top of the foundation support and connected sequentially along the longitudinal direction of the tunnel, a base plate installed on the base frame, and a disc buckle upright tube extending upward from the corner of the base frame; correspondingly, the slide support includes the foundation support and several stepped layers.

[0016] The inclination of the foundation support meets the design requirements and the anchor points are fixed; the base plate fixing is checked; the horizontal installation deviation of the disc buckle upright tube is within ±50mm, and the vertical elevation deviation is not lower than the design elevation and the deviation is ≤3mm;

[0017] Apply a preload of not less than 1.2 times the total working load, let it stand for no less than 30 minutes, and observe whether the slide support is deformed or displaced, whether the foundation is settled or loosened, and whether the anchor points of the foundation support are loose. If none of these are present, the inspection is qualified. If any are present, reinforce the support again until the inspection is qualified.

[0018] In one possible implementation, based on the acceptance of the slide rail support, the reinforcement method includes:

[0019] Slide support reinforcement: Add transverse and / or longitudinal support rods, weld steel or encase with concrete to increase the cross-section of the support;

[0020] Anchor point reinforcement: Replace bolts and add anti-slip pads, then tighten them properly; clean the original weld, add pads, and re-weld.

[0021] In one possible implementation, construction based on sliding rails includes the following steps:

[0022] A certain type of steel bar is selected as the main material for the slide rail, and a certain type of steel bar is matched as the support leg;

[0023] Along the transverse direction of the mined tunnel, using the reference line of the disc-buckle upright pipe position located on the same straight line, steel bars are laid down section by section along the reference line; adjacent steel bars are connected by joints to ensure that the flatness deviation of the rail surface at the joint of the slide rail does not exceed 0.5mm.

[0024] A support leg is welded to the bottom of each section of steel bar, and the lower end of the support leg is inserted into the corresponding disc buckle upright tube; the support leg and the disc buckle upright tube are fixedly connected by an intermediate component; a push-pull test is performed by an inspection component to check the integrity of the support leg and the disc buckle upright tube.

[0025] After the slide rails are laid, check the parallelism and elevation of the multiple slide rails;

[0026] Apply a preload of not less than 1.2 times the total working load, let it stand for no less than 30 minutes, and observe whether the slide rail is deformed or displaced, whether the slide support is deformed or displaced, whether the foundation is settled or loosened, and whether the anchor points of the foundation support are loosened. If none of these apply, the inspection is qualified. If any issues are found, reinforce the structure until the inspection is qualified.

[0027] In one possible implementation, the connector includes an outer sleeve fitted over two adjacent reinforcing bars, a wedge-shaped pin inserted into the outer sleeve, and a pad located below the outer sleeve.

[0028] In one possible implementation, the intermediate components are selected from connecting sleeves, pole connectors, pins, tightening bolts, and welded layers.

[0029] In one possible implementation, the inspection component includes an inspection bracket, an inspection cylinder, and an inspection rod;

[0030] The inspection bracket is an arc-shaped bracket with an opening on one side;

[0031] The inspection cylinder is rotatably mounted on the inspection bracket, and the inspection cylinder is provided with a working groove for abutting the connection between the support leg and the disc buckle upright tube;

[0032] The inspection rod is rotatably installed inside the inspection cylinder, and one end of the inspection rod is used as a push-pull end connecting the support leg and the disc buckle upright tube, while the other end of the inspection rod is used as a drive end to drive the inspection rod to slide back and forth.

[0033] In one possible implementation, based on the transportation of reinforcing bars, the following steps are included:

[0034] Winches or hand-operated hoists are installed on both sides of the top of the tunnel. Steering guide wheels are installed on the top of the tunnel. One end of the traction rope is connected to the winch or hand-operated hoist, and the other end of the traction rope goes around the steering guide wheel and extends to the slide rail.

[0035] The steel bars are hoisted onto the slide rail, and the traction rope is connected to the steel bar bundle.

[0036] The steel bar bundles are moved down along the slide rail and transported, and the slow descent of the steel bar bundles is controlled by a winch or hand chain hoist.

[0037] A winch or hand-operated hoist is used to maintain tension and control the downward speed of the steel bar bundle;

[0038] Place buffer blocks in the construction area. The steel bar bundles will impact the buffer blocks and come to a smooth stop in the construction area. Then release the traction ropes and bindings.

[0039] In one possible implementation, the buffer block includes a stop plate, a buffer structure, and a stop block connected in sequence. The stop plate is detachably connected to the buffer structure and extends above the slide rail surface. The buffer structure is used to absorb impact kinetic energy, and the stop block is detachably mounted on the slide rail support.

[0040] In one possible implementation, if the construction area is located in the latter half of the tunnel section and / or the slope of the slide rail is large, several intermediate buffers are set on the slide rail support. The multiple intermediate buffers are spaced apart along the slide rail direction and are used to decelerate the steel reinforcement bundles midway.

[0041] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0042] 1. Replacing manual handling with sliding rails significantly shortens the steel bar transportation time, reduces labor intensity, speeds up the steel bar binding process, promotes the early closure of the secondary lining structure into a ring, and effectively reduces the construction risks of mined tunnels.

[0043] 2. The sliding rail is used for handling steel bars and ensuring transportation safety, attaching safety belts and improving the safety of high-altitude operations, as well as providing temporary side protection and preventing falls from heights. It achieves multiple uses for one rail, comprehensively strengthens safety protection, and eliminates construction safety hazards in all aspects.

[0044] 3. The sliding rail bracket is installed based on the existing disc-type bracket support system, without the need to modify the frame. It is easy for construction personnel to use and can be widely applied in the secondary lining construction of various types of mined tunnels on slopes, making it highly versatile.

[0045] 4. Simplify the steel bar transportation and high-altitude protection operation process, reduce manual input, improve the smoothness of process connection, ensure the quality of steel bar binding of the arch wall on the slope section and the construction progress, and achieve efficient, safe and green construction. Attached Figure Description

[0046] To more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of the present invention and should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort. In the drawings:

[0047] Figure 1 This is a schematic diagram of the assembly of the support system, slide rails, and slide rails in the transverse direction of a mined tunnel.

[0048] Figure 2 This is a schematic diagram of the assembly of the support system, slide rails, and slide rails in the longitudinal direction of a cut-and-cover tunnel.

[0049] Figure 3 This is a schematic diagram of a partial structure of the stepped layer.

[0050] Figure 4 This is a structural diagram of the inspection piece.

[0051] Figure 5 This is a schematic diagram showing the fit between the inspection bracket and the inspection cylinder.

[0052] Figure 6 This is a schematic diagram of the structure of the inspection cylinder.

[0053] The attached diagram shows the markings and corresponding component names:

[0054] 100. Support system; 200. Slide rail support; 201. Base frame; 202. Base plate; 203. Disc buckle upright tube; 300. Slide rail; 401. Inspection bracket; 402. Inspection cylinder; 403. Inspection rod; 404. Working groove; 405. Misalignment groove. Detailed Implementation

[0055] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the embodiments and accompanying drawings. The illustrative embodiments and descriptions of this invention are only for explaining this invention and are not intended to limit this invention.

[0056] Example

[0057] like Figures 1-6 As shown, a sliding rebar installation method includes the following steps:

[0058] S100 Construction Preparation: Based on the support system 100 of the secondary lining construction of the sloping section of the mined tunnel, the slide support 200 was erected and accepted on the slope.

[0059] Among them, the support system 100 adopts the full-span disc buckle support system 100, which is used for the secondary lining construction of the slope section of the tunnel. If it can also meet the use of the sliding support 200, the support system 100 can be directly reused to achieve reuse, reduce construction costs and improve construction efficiency. Conversely, if the support system 100 cannot meet the requirements, construction will be carried out on the basis of the support system 100, and the sliding support 200 adapted to the slope will be made based on the support system 100.

[0060] Specifically: Based on the S100 construction preparation, the following steps are included:

[0061] S101 Cut-and-cover tunnel foundation inspection, drainage, debris removal and foundation bearing capacity, 100% inspection and repair of the support system;

[0062] S102 consists of a foundation support and several stepped layers on the foundation support, from top to bottom. Each stepped layer includes several base frames 201 located at the top of the foundation support and connected sequentially along the longitudinal direction of the tunnel, a base plate 202 installed on the base frame 201, and a disc buckle upright tube 203 extending upward from the corner of the base frame 201. Correspondingly, the slide support 200 includes a foundation support and several stepped layers.

[0063] The inclination of the S103 foundation support meets the design requirements and the anchor points are fixed; the base plate 202 is fixed and inspected; the lateral installation deviation of the disc buckle upright tube 203 is within ±50mm, and the vertical elevation deviation is not lower than the design elevation and the deviation is ≤3mm.

[0064] S104. Apply a preload of not less than 1.2 times the total working load, let it stand for no less than 30 minutes, and observe whether the slide support 200 is deformed or displaced, whether the foundation is settled or loosened, and whether the anchor points of the foundation support are loose. If none of these are found, the inspection is qualified. If any are found, reinforce the support again until the inspection is qualified.

[0065] Based on the above design scheme, in step S101, ensure that the structural strength of the foundation and support system 100 of the mined tunnel meets the usage requirements to ensure the safety of subsequent construction. Drainage inspection not only requires completing drainage but also recalculating the stress on the support system 100; debris removal should be free of loose slag, debris, and loose stones; the support system 100 should be completely free of dirt, rust, and false welds, and joint connections must be secure. The foundation bearing capacity must meet the total load requirements of the slide rail 300 plus fully loaded reinforcing steel; if it does not meet the requirements, it must be reinforced in advance, and direct installation is prohibited.

[0066] In step S102, the basic support can be a support support system or a frame structure added to the support support system. The stepped layer is used for the high-altitude work platform for subsequent construction, and the disc-locking upright tube 203 is used to install the slide rail 300.

[0067] In step S103, the newly installed slide rail bracket 200 is inspected to ensure its performance meets usage requirements and guarantees safety. Anchor points, including bolts and welded joints, should be inspected to ensure bolts are fully tightened, welds are full and free of defects, and each anchor point must be secure. Furthermore, the slide rail 300 and the formwork support system must not share joints. The disc-lock upright tube 203 is subsequently used for the installation of the slide rail 300; therefore, its installation deviation and vertical elevation deviation must be strictly controlled.

[0068] In step S104, after the construction of the slide rail support 200 is completed, the foundation, support system 100 and slide rail support 200 are used as a whole and are inspected through pre-stressing.

[0069] It is worth noting that if any non-compliance occurs, reinforcement can be carried out using the methods described below. Based on the acceptance criteria for the slide rail support (200mm), the reinforcement methods include:

[0070] 200mm reinforcement of slide rail support: Add transverse and / or longitudinal support rods, weld steel or wrap with concrete to increase the cross-section of the support;

[0071] Anchor point reinforcement: Replace bolts and add anti-slip pads, then tighten them properly; clean the original weld, add pads, and re-weld.

[0072] S200 slide rail 300 construction: steel bars are selected as the main material of the slide rail; at least two baselines are set at intervals on the top surface of the slide rail support 200, and two of the baselines are located on both sides of the slide rail support 200; steel bars are laid down section by section along the baseline in the transverse direction of the tunnel; support legs are welded below the steel bars and inserted into the disc buckle upright tube 203 of the slide rail support 200.

[0073] The slide rail 300 uses steel reinforcement as its main material, which is readily available, easy to process, and effectively reduces construction costs. Correspondingly, the outriggers can also be made of steel reinforcement. Furthermore, there are at least two slide rails 300 to ensure stability and safety when transporting steel reinforcement. Additionally, the number of slide rails 300 is appropriately increased and the spacing between adjacent slide rails 300 is reduced based on the longitudinal width of the tunnel. In other words, the number of slide rails 300 is selected according to the actual situation. Moreover, considering that the stepped layer will later be used as an aerial work platform, two slide rails 300 are located on both sides of the slide rail support 200, thus serving as edge guardrails for the aerial work platform, achieving conversion while ensuring operational safety.

[0074] Specifically: Construction based on S200 slide rail 300 includes the following steps:

[0075] S201 uses a certain type of steel bar as the main material for the slide rail, and a certain type of steel bar as the support leg.

[0076] Along the transverse direction of the S202 tunnel, with the reference line of the disc-buckle upright pipe 203 located on the same straight line, steel bars are laid down section by section along the reference line; adjacent steel bars are connected by joints to ensure that the flatness deviation of the rail surface at the joint of the slide rail 300 does not exceed 0.5mm.

[0077] S203 has a support leg welded to the bottom of each section of steel bar, and the lower end of the support leg is inserted into the corresponding disc buckle upright tube 203; the support leg and the disc buckle upright tube 203 are fixedly connected by an intermediate component; a push-pull test is performed by an inspection component to check the integrity of the support leg and the disc buckle upright tube 203.

[0078] After the S204 slide rail 300 is laid, check the parallelism and elevation of multiple slide rails 300.

[0079] S205 applies a preload of not less than 1.2 times the total working load, and lets it stand for no less than 30 minutes. Observe whether the slide rail 300 is deformed or displaced, whether the slide support 200 is deformed or displaced, whether the foundation has settled or loosened, and whether the anchor points of the foundation support are loose. If none of these are found, the inspection is qualified. If any are found, the support is reinforced again until the inspection is qualified.

[0080] Based on the above design scheme, in step S201, the appropriate type of steel bar can be selected according to the actual construction situation, which will not be elaborated here.

[0081] In step S202, steel bars are installed section by section along the disc buckle upright tube 203 to form a slide rail 300. Attention should be paid to the flatness of the rail surface at the joint between adjacent steel bars to avoid unexpected situations such as jamming, jumping, or derailment during the subsequent transportation of steel bars by the slide rail 300.

[0082] Accordingly, a connector is used to achieve the connection, which includes an outer sleeve fitted onto two adjacent reinforcing bars, a wedge-shaped pin inserted into the outer sleeve, and a pad located below the outer sleeve. Based on this, the outer sleeve is used to wrap around the joint of two adjacent reinforcing bars, improving the overall bending stiffness; the wedge-shaped pin is inserted between the outer sleeve and the reinforcing bar to eliminate gaps and achieve locking, preventing the outer sleeve from slipping; the pad serves as a support to prevent sagging at the joint.

[0083] In step S203, the slide rail 300 is connected to the slide rail bracket 200 by connecting the support leg to the disc buckle upright tube 203. The connection performance between the support leg and the disc buckle upright tube 203 is improved by the intermediate component, ensuring that the support leg is inserted into the disc buckle upright tube 203 stably without shaking.

[0084] Accordingly, connections are achieved through intermediate components, which may include connecting sleeves, pole connectors, pins, tightening bolts, and welded layers. Based on this, at least one of these intermediate components can be selected according to the actual working conditions.

[0085] It is worth noting that after the outrigger is connected to the disc buckle upright tube 203, it should be inspected again using inspection components to ensure the stability of the connection. Accordingly, such as... Figures 4-6As shown, the inspection component includes an inspection bracket 401, an inspection cylinder 402, and an inspection rod 403. The inspection bracket 401 is constructed as an arc-shaped bracket with an opening on one side. The inspection cylinder 402 is rotatably mounted on the inspection bracket 401, and the inspection cylinder 402 is provided with a working groove 404 for abutting the connection between the support leg and the disc buckle upright tube 203. The inspection rod 403 is rotatably mounted inside the inspection cylinder 402, and one end of the inspection rod 403 is used as a push-pull end connecting the connection between the support leg and the disc buckle upright tube 203, while the other end of the inspection rod 403 is used as a drive end for driving the inspection rod 403 to slide back and forth. Based on this, the inspection bracket 401 is moved until the disc-lock upright tube 203 is inserted into the inspection bracket 401 through its opening, until the outrigger is inserted into the working groove 404 of the inspection cylinder 402. The inspection rod 403 is parallel to the outrigger, and is connected to the outrigger via a push-pull end. The inspection rod 403 is then driven to move via a drive end, and the force is applied to the outrigger through the inspection rod 403 to check if the outrigger moves. After passing the inspection, the connection between the inspection rod 403 and the outrigger is released, and the inspection cylinder 402 is rotated until the inspection rod 403 is perpendicular to the outrigger. The inspection rod 403 is then reconnected to the outrigger, and the inspection rod 403 is driven to move via a drive end, and the force is applied to the outrigger through the inspection rod 403 to check if the outrigger moves. In other words, the outrigger is pushed and pulled in both vertical and horizontal directions to check the effect and quality of the connection between the outrigger and the disc-lock upright tube 203.

[0086] Correspondingly, the working groove 404 of the inspection cylinder 402 is provided with a misalignment groove 405 on the opposite side for avoiding the support leg. When the inspection cylinder 402 rotates to the point where the inspection rod 403 is perpendicular to the support leg, if the support leg is long, the support leg is inserted into the misalignment groove 405 to avoid the support leg blocking the rotation of the inspection cylinder 402.

[0087] Accordingly, the inspection cylinder 402 is provided with a base for connecting the inspection rod 403. The inspection rod 403 is installed through the base and the end of the inspection cylinder 402. At the same time, the base and the end of the inspection cylinder 402 serve as external constraints to allow the inspection rod 403 to slide back and forth. In addition, the push-pull end of the inspection rod 403 can be constructed with any suitable structure, or any suitable existing component can be provided to achieve the connection between the inspection rod 403 and the support leg.

[0088] Accordingly, the control terminal can be connected to any suitable existing drive device, or to a manual drive structure such as a hand crank. The former is more convenient to use, while the latter is more economical.

[0089] In step S204, after the slide rail 300 is laid, check the parallelism and elevation of multiple slide rails 300 to ensure the construction quality of the slide rail 300.

[0090] In step S205, refer to step S104 and conduct acceptance testing again to ensure that the performance of slide rail 300 meets the usage requirements.

[0091] S300 steel bar transportation: Steel bars are transported downwards to the construction area using slide rail 300.

[0092] Among them, the slide rail 300 can be used to transport steel bars to the construction area inside the mined tunnel, and can also be used to transport any other suitable building materials, thus expanding the scope of application of the slide rail 300.

[0093] Specifically: Transportation of S300 steel bars includes the following steps:

[0094] S301 The top of the tunnel is equipped with winches or hand-operated hoists on both sides. A steering guide wheel is installed on the top of the tunnel. One end of the traction rope is connected to the winch or hand-operated hoist, and the other end of the traction rope goes around the steering guide wheel and extends to the slide rail 300.

[0095] S302 hoists the steel bar bundles onto the slide rail 300, and the traction rope connects the steel bar bundles;

[0096] S303 moves down along slide rail 300 and conveys the steel bar bundles. The steel bar bundles are slowly moved down by a winch or hand chain hoist.

[0097] An S304 winch or hand chain hoist maintains tension and controls the downward speed of the steel bar bundle;

[0098] Buffer blocks are placed in the S305 construction area. The steel bar bundles hit the buffer blocks and come to a smooth stop in the construction area. The traction ropes and bindings are then released.

[0099] Based on the above design scheme, in step S301, a winch or hand-operated hoist is installed to apply force and control the movement speed of the rebar bundles, ensuring transportation safety. Furthermore, transporting rebar bundles helps improve transportation efficiency; additionally, the rebars in the bundles should be pre-processed to ensure their shape and size meet subsequent construction requirements, reducing the workload in the mined tunnel. Moreover, the winch or hand-operated hoist is located on the side, avoiding space occupation and making the fabrication and hoisting of the rebar bundles more convenient.

[0100] In step S302, after the steel bar bundle is tied into shape and its tightness is checked, the steel bar bundle is lifted onto the slide rail 300 and connected to the traction rope using any suitable hoisting equipment.

[0101] In step S303, the rebar bundle should be moved at a low speed during the initial stage of downward movement to ensure the safety of transportation.

[0102] In step S304, during the downward movement of the steel bar bundle, tension is maintained and the downward movement speed of the steel bar bundle is controlled to ensure the safety of transportation.

[0103] In step S305, the kinetic energy of the steel bar bundle is absorbed and buffered by the buffer block until the steel bar bundle comes to a stable stop in the construction area. Then the traction rope and binding are released, and subsequent construction can proceed.

[0104] The buffer block comprises a stop plate, a buffer structure, and a stop block connected in sequence. The stop plate is detachably connected to the buffer structure and extends above the surface of the slide rail 300. The buffer structure absorbs impact kinetic energy, and the stop block is detachably mounted on the slide rail bracket 200. Therefore, the stop plate directly contacts the reinforcing bar bundle, and its replacement is achieved through a detachable connection. The buffer structure can be selected from at least one of damping rods, springs, and buffer pads, or any suitable existing component, offering a wide range of choices and good practicality. The stop block is used to install the buffer block on the slide rail bracket 200, thereby fixing the buffer block in the construction area; correspondingly, as the construction area moves, the buffer block also moves and can be reused.

[0105] Furthermore, if the construction area is located in the latter half of the tunnel section, and / or the slope of the slide rail 300 is large, several intermediate buffers are installed on the slide rail support 200. These intermediate buffers are spaced apart along the slide rail 300 and used for deceleration of the rebar bundles during transport. Based on this, a speed control system is formed throughout the entire rebar bundle transportation process, using a winch or hand-operated hoist for top control, intermediate buffers for intermediate deceleration, and buffer blocks for bottom stops, ensuring the safety of the rebar bundle transportation. Accordingly, the intermediate buffers can be constructed with any suitable structure, or any suitable existing components can be selected; this invention does not impose any limitations on this.

[0106] S400 Reinforcing Steel Construction: The slide rail support 200 serves as the high-altitude work platform, and the slide rails 300 located on both sides of the slide rail support 200 serve as the edge guardrails of the high-altitude work platform for reinforcing steel construction; the slide rails 300 located on both sides of the slide rail support 200 also serve as the safety belt fastening points.

[0107] Among these, the reinforcement binding of the side walls of the mined tunnel is a high-altitude operation. Traditional safety belts require repeated fastening and re-fastening as personnel move, which is cumbersome, inefficient, and poses a safety hazard due to improper fastening. Furthermore, the operating platform at the top of the scaffold lacks dedicated edge protection facilities, exposing workers to the risk of falls while working on the sloping scaffold. To address this, a sliding support 200 is used as the high-altitude working platform, with the sliding rails 300 on both sides serving as edge guardrails. This allows for component reuse while simultaneously preventing falls, improving the safety of high-altitude operations. Moreover, using the sliding rails 300 on both sides of the sliding support 200 as safety belt fastening points eliminates the need for repeated fastening and re-fastening, ensuring safety and making construction more convenient.

[0108] S500 construction connection: After the steel reinforcement work is completed, the 300 slide rails are removed and recycled for reuse.

[0109] The slide rail 300 allows for material recycling and reuse after dismantling, achieving green construction. Correspondingly, in conjunction with the support system 100, subsequent construction such as secondary lining pouring can also be carried out.

[0110] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of the present invention. It should be understood that the above description is only a specific embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A sliding rebar installation method, characterized in that, Includes the following steps: Construction preparation: Based on the support system (100) for the secondary lining construction of the slope section of the mined tunnel, the slide support (200) was erected and accepted on the slope. Construction of slide rail (300): Steel bars are selected as the main material of slide rail; at least two baselines are set at intervals on the top surface of slide rail support (200), and two of the baselines are located on both sides of slide rail support (200); steel bars are laid down section by section along the baseline in the transverse direction of the tunnel; support legs are welded below the steel bars and the support legs are inserted into the disc buckle upright pipe (203) of slide rail support (200); Rebar transportation: Rebar is transported downwards to the construction area using a slide rail (300); Reinforcing steel construction: The slide rail support (200) is used as the high-altitude work platform, and the slide rails (300) located on both sides of the slide rail support (200) are used as the edge guardrails of the high-altitude work platform to carry out reinforcing steel work; and the slide rails (300) located on both sides of the slide rail support (200) are also used as the fastening points for safety belts; Construction connection: After the steel reinforcement work is completed, the slide rail (300) is removed and recycled for reuse.

2. The sliding rebar installation method according to claim 1, characterized in that, Based on construction preparation, the following steps are included: Inspection of the foundation of the mined tunnel, drainage, debris removal and foundation bearing capacity, inspection and repair of the support system (100); A foundation support and several stepped layers are erected from top to bottom. Each stepped layer includes several base frames (201) located at the top of the foundation support and connected sequentially along the longitudinal direction of the tunnel, a base plate (202) installed on the base frame (201), and a disc buckle upright tube (203) extending upward from the corner of the base frame (201); correspondingly, the slide support (200) includes a foundation support and several stepped layers. The inclination of the foundation support meets the design requirements and the anchor points are fixed; the base plate (202) is fixed and inspected; the horizontal installation deviation of the disc buckle upright tube (203) is within ±50mm, and the vertical elevation deviation is not lower than the design elevation and the deviation is ≤3mm; Apply a preload of not less than 1.2 times the total working load, let it stand for no less than 30 minutes, and observe whether the slide support (200) is deformed or displaced, whether the foundation is settled or loosened, and whether the anchor points of the foundation support are loose. If none of these apply, the inspection is qualified. If any of these apply, reinforce the support again until the inspection is qualified.

3. The sliding rebar installation method according to claim 2, characterized in that, Based on the acceptance of the slide rail support (200), the reinforcement methods include: Slide support (200) reinforcement: add transverse and / or longitudinal support rods, weld steel or wrap with concrete to increase the cross section of the support; Anchor point reinforcement: Replace bolts and add anti-slip pads, then tighten them properly; clean the original weld, add pads, and re-weld.

4. The sliding rebar installation method according to claim 1, characterized in that, Construction based on the slide rail (300) includes the following steps: A certain type of steel bar is selected as the main material for the slide rail, and a certain type of steel bar is matched as the support leg; Along the transverse direction of the mined tunnel, with the reference line of the disc-buckle upright pipe (203) located on the same straight line, steel bars are laid down section by section along the reference line; adjacent steel bars are connected by joints so that the flatness deviation of the rail surface at the joint of the slide rail (300) does not exceed 0.5mm. A support leg is welded to the bottom of each section of steel bar, and the lower end of the support leg is inserted into the corresponding disc buckle upright tube (203); the support leg and the disc buckle upright tube (203) are fixedly connected by an intermediate component; a push-pull test is performed by an inspection component to check the integrity of the support leg and the disc buckle upright tube (203); After the slide rails (300) are laid, check the parallelism and elevation of multiple slide rails (300); Apply a preload of not less than 1.2 times the total working load, let it stand for no less than 30 minutes, observe whether the slide rail (300) is deformed or displaced, observe whether the slide rail support (200) is deformed or displaced, whether the foundation has settled or loosened, and whether the anchor points of the foundation support are loose; if none of these apply, the inspection is qualified; if any, reinforce it again until the inspection is qualified.

5. The sliding rebar installation method according to claim 4, characterized in that, The connector includes an outer sleeve fitted onto two adjacent reinforcing bars, a wedge-shaped pin inserted into the outer sleeve, and a pad located below the outer sleeve.

6. The sliding rebar installation method according to claim 4, characterized in that, The intermediate components include connecting sleeves, pole connectors, pins, tightening bolts, and welded layers.

7. The sliding rebar installation method according to claim 4, characterized in that, The inspection components include an inspection bracket (401), an inspection cylinder (402), and an inspection rod (403); The inspection bracket (401) is constructed as an arc-shaped bracket with an opening on one side; The inspection cylinder (402) is rotatably mounted on the inspection bracket (401), and the inspection cylinder (402) is provided with a working groove (404) for abutting the connection between the support leg and the disc buckle upright tube (203). The inspection rod (403) is rotatably set inside the inspection cylinder (402), and one end of the inspection rod (403) is used as a push-pull end connecting the support leg and the disc buckle upright tube (203), and the other end of the inspection rod (403) is used as a drive end for driving the inspection rod (403) to slide back and forth.

8. The sliding rebar installation method according to claim 1, characterized in that, Based on the transportation of steel bars, the following steps are included: Winches or hand-operated hoists are installed on both sides of the top of the tunnel. A steering guide wheel is installed on the top of the tunnel. One end of the traction rope is connected to the winch or hand-operated hoist, and the other end of the traction rope goes around the steering guide wheel and extends to the slide rail (300). Hoist the steel bars into the slide rail (300), and connect the steel bar bundle with the traction rope; The steel bar bundles are moved down along the slide rail (300) and transported slowly by means of a winch or hand chain hoist. A winch or hand-operated hoist is used to maintain tension and control the downward speed of the steel bar bundle; Place buffer blocks in the construction area. The steel bar bundles will impact the buffer blocks and come to a smooth stop in the construction area. Then release the traction ropes and bindings.

9. The sliding rebar installation method according to claim 8, characterized in that, The buffer block includes a stop plate, a buffer structure and a stop block connected in sequence. The stop plate is detachably connected to the buffer structure and is higher than the slide rail (300) surface. The buffer structure is used to absorb impact kinetic energy. The stop block is detachably mounted on the slide rail bracket (200).

10. The sliding rebar installation method according to claim 8, characterized in that, If the construction area is located in the last 1 / 2 section of the tunnel, and / or the slope of the slide rail (300) is large, several intermediate buffers are set on the slide rail support (200). The multiple intermediate buffers are set at intervals along the slide rail (300) and used to decelerate the steel reinforcement bundles midway.

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