High-speed rail full-process digital cleaning construction method

Abstract

The invention discloses a high-speed railway full-process digital cleaning construction method, and particularly relates to the technical field of high-speed railway digital construction, the construction method comprises the following steps: S1, determining and rechecking line design data; s2, line measurement and pile placement are conducted, operation is conducted in cooperation with cleaning work according to the quality control standard, an auxiliary measurement system is used for being combined with a distance measurement module to measure the rail surface elevation of the line after cleaning, and therefore the elevation condition of a cleaning section is controlled in real time; s3, constructing a daily operation process; s4, primary tamping operation is carried out; s5, carrying out coarse tamping operation; s6, fine smashing operation is carried out; s7, fine tamping operation is carried out again, after the second track gauge fine adjustment is completed, tamping operation is carried out again through the fine tamping scheme manufactured through inertial navigation operation fine measurement data, tamping stabilizing operation is carried out, and meanwhile whether reinforcing tamping is carried out or not is determined according to the TQI, the fine measurement data and other conditions; and S8, carrying out quality re-inspection and analysis, carrying out appearance arrangement and acceptance, and then carrying out project completion.

Description

Technical Field

[0001] The present invention relates to the technical field of high-speed railway digital construction, and in particular to a full-process digital screening construction method for high-speed railways. Background Art

[0002] With the rapid development of my country's railways, the ballast track bed of railway lines will become dirty, compacted, and slurry-over during operation. The elasticity of the track bed cannot be maintained, resulting in it being unable to maintain a normal and reliable working condition. Therefore, the track bed must be cleaned to ensure it is in a normal and reliable state. The track bed cleaning construction has evolved from being mainly manual to being mainly large-scale machine cleaning construction.

[0003] After searching, it was found that in the patent number "Patent CN203065910U", angle sensors are installed on the lower surface of the crossbeams on the front bogie and the rear bogie to achieve the purpose of real-time measurement of the longitudinal height difference of the rail surface; however, in actual screening operations, due to the relatively soft frame, the frame may bend and deform during the operation, which has a greater impact on the detection accuracy and cannot accurately reflect the actual amount of track drop.

[0004] In addition, in the current screening construction, the data on the amount of track lifting and shifting at the construction site are recorded by the operators with their naked eyes and are given based on experience. At the same time, the track inspection and shifting personnel are not fixed, and the construction quality is difficult to guarantee, resulting in a high amount of rework.

[0005] However, full-process digital screening construction is very necessary in actual application:

[0006] 1. High-speed rail full-process digital screening construction method, using data to guide construction throughout the entire process;

[0007] 2. Minimize the impact of human factors on the quality of cleaning and screening operations, thereby achieving the goal of reducing costs and improving operating efficiency and quality. Summary of the Invention

[0008] In order to overcome the above-mentioned defects of the prior art, an embodiment of the present invention provides a high-speed railway full-process digital screening construction method to solve the problems raised in the above-mentioned background technology.

[0009] To achieve the above-mentioned purpose, the present invention provides the following technical solution: a high-speed railway full-process digital screening construction method, comprising the following steps:

[0010] S1. Confirm and review the line design data, and adopt a fixed marshaling mode to carry out the construction work process;

[0011] S2. Measure and stake the track, coordinate with the cleaning work and perform operations in accordance with quality control standards. Use the auxiliary measurement system combined with the distance measurement module to measure the track surface elevation after cleaning, thereby controlling the elevation of the cleaning section in real time.

[0012] S3. Daily construction operation process: (1) Preparation before construction. Before the formal construction, a first-day construction drill is prepared according to the first-day construction requirements. On the day of the drill, the unit is shunted from the storage point to the registration station according to the formal construction group and waits for orders. After the blockade, the engineering vehicle simulates the formal construction and drives to the work site. After arriving at the construction site, it is disassembled and aligned according to the construction plan. After disassembly, each vehicle is tested for release without disturbing the roadbed. After the test is completed, it is connected, returned to the station and stored according to the plan. The time required for each link is controlled, aiming to guide the time control of each link in the subsequent formal construction; (2) Preparation before blockade: ① Construction plan formulation. Every day, the workshop team, section monitoring cadres, special team, team leader, workshop plan and technology hold a construction quality review meeting to summarize the construction quality and existing problems of the previous day, analyze the key points of the day's construction, and formulate a targeted construction plan. The key points mainly include the following points:

[0013] Ⅰ. Key time point control: Strictly control the time for cleaning and screening machine to be put back to the station and the time for the unit to be connected and returned to the station, so as to reversely calculate the operation time of other processes and ensure the line is opened on time;

[0014] II. Determine the order and position of disassembly, alignment and connection according to the slope of the work site to prevent the screen cleaning machine from being unable to connect normally due to insufficient power on the uphill slope after construction;

[0015] III. Reasonably determine the retreat mileage based on precise measurement data;

[0016] IV. Based on the on-site investigation and the amount of track removed for the next day's work, reasonably determine the ballast unloading distance to ensure that the ballast is full before rough and fine tamping. Pay attention to avoiding overfilling of the ballast in bridge sections.

[0017] S4: Perform preliminary tamping operations, and then perform secondary tamping operations after ballast unloading and stabilization operations are completed. On the day of screen cleaning, the data from the first distance measuring module after the screen cleaning operation is used to guide the preliminary tamping operation, and the data from the second distance measuring module before the secondary tamping operation is used to guide the secondary tamping operation.

[0018] S5. Rough tamping is performed. After cleaning, the rough tamping plan is prepared using the precise measurement data of the inertial navigation operation to eliminate low-lying areas and plane deviations in the cleaning area, making the cross-section smooth as a whole. The first round of track gauge fine-tuning is then completed before the subsequent fine tamping.

[0019] S6. Perform fine tamping. After the rough tamping and the first track gauge fine adjustment are completed, perform the fine tamping plan prepared using the inertial navigation operation precision measurement data to perform the tamping operation. Simultaneously, perform the tamping stabilization operation, and then complete the second track gauge fine adjustment before the subsequent fine tamping.

[0020] S7. Perform fine tamping again. After the second gauge fine adjustment is completed, perform tamping again using the fine tamping plan prepared by the inertial navigation operation precision measurement data. Perform tamping stabilization. At the same time, determine whether to perform reinforcement tamping based on the TQI and precision measurement data.

[0021] S8. Re-inspect and analyze the quality, sort out and accept the appearance, and then complete the project;

[0022] In a preferred embodiment, the S1 specifically includes: determining and reviewing the line design data, and adopting a fixed marshaling mode to marshal the working vehicles and ballast unloading vehicles. In the fixed marshaling mode adopted for screening, a 08 tamping vehicle is replaced with a 09 tamping vehicle, and a ballast distribution workshop and a tamping and stabilization unit are added to realize the "screening and tamping + rough tamping + fine tamping + reinforcement tamping" operation mode. The screening vehicle is equipped with "08 tamping vehicle + ballast distribution vehicle + stabilization vehicle + 09 tamping vehicle + stabilization vehicle", and after the "08 tamping vehicle + ballast distribution vehicle + 09 tamping vehicle + ballast distribution vehicle + tamping and stabilization unit + tamping and stabilization unit" operation, three tamping and two stabilization are realized. Before the formal construction, a first-day construction drill is formulated according to the first-day construction requirements. After the drill, an inventory and statistics are carried out, and the vehicles are numbered and labeled. Then, the construction is blocked, and a protection system is established for the shunting operation of the engineering train. Preparations are made before the operation. After the blockade, the engineering train is started and positioned.

[0023] In a preferred embodiment, S2 specifically includes: measuring and staking the line, and according to the cleaning car ridge cut-in control standard and the cleaning car ridge cut-out control standard, in conjunction with the cleaning road control standard, and according to the cleaning car new tooling cleaning line auxiliary measurement system, real-time monitoring of various data changes during the operation process, and fine-tuning of the corresponding data. At the same time, the static geometric dimensions of the line should meet the following requirements: track gauge deviation -6 to +12 mm, level difference less than 25 mm, triangular pit less than 30 mm, rail gap less than 30 mm, curve visually round and smooth without reverse superelevation, in conjunction with the cleaning car normal operation control standard, retreat distance and dragon mouth slope control standard, cleaning road prevention of high point control standard, ridge "wearing sleeves" excavation distance control standard and the last day of the cleaning stage cleaning elevation surface and the existing elevation surface connection slope rate control standard to operate. After the cleaning is completed, the speed level is gradually increased to normal speed in the four-day speed-up tamping stage, and the connection between the cleaning elevation surface and the existing elevation surface is controlled at a slope rate of no more than 0.3‰.

[0024] Specifically, the new cleaning line auxiliary measurement system of the cleaning vehicle can intuitively reflect the level, direction, elevation and other data of the cleaning line, and has a working device that can make corresponding fine adjustments. During the cleaning operation, by observing the cleaning line auxiliary measurement system, the level, direction and elevation control status of the cleaning line can be understood in real time. If the horizontal deviation is too large, the fifth-position operator can adjust the backfill angle and the amount of ballast to reduce the horizontal difference.

[0025] Ⅰ. If the horizontal deviation is too large, the operator at position 5 can adjust the backfill angle and the amount of ballast to reduce the horizontal difference;

[0026] II. If the direction deviation is too large, the operator at position 3 should control the track shifting device to the left or right to achieve the desired value;

[0027] III. If the actual elevation does not reach the specified elevation, and the specified elevation is 50-60mm lower than the design elevation, the operator at position 3 should immediately control the track-lifting device to lower the excavation depth to achieve the ideal elevation value, otherwise reduce the excavation depth appropriately.

[0028] In a preferred embodiment, in step S3, the workshop plans to prepare a construction plan according to the approved daily construction plan:

[0029] ①Convene a large machine cleaning, screening, and completion meeting, organize the convening of the screening and completion meeting, and organize the monitoring personnel at all levels of the Guangzhou Large Machine Section, workshop management personnel, various operating teams, outsourced construction teams, and professional leaders of the Haikou Comprehensive Maintenance Section to attend the meeting;

[0030] ② Participate in the preparatory meeting and summary meeting: organized by the train maintenance section, with participation from the main construction unit, the skylight sharing unit, and all cooperating units;

[0031] ③Convene a second branch meeting of the outsourced construction team and organize the second branch meeting of the outsourced construction team in accordance with regulations;

[0032] ④ Personnel are in place and tools and materials are counted. All workers, tools, materials, etc. entering and leaving the work door are counted. All tools must be numbered and affixed with reflective labels. Numbering rules: Except for handheld walkie-talkies, all tools must be painted with red reflective paint or affixed with reflective labels. They must be numbered and identified in the format of "workshop abbreviation (2 digits) - tool code (2 digits) - digital serial number (3 digits), such as: QS-GD-001, where the first symbol QS represents the name of the screening workshop, the second symbol represents the tool code, the inertial navigation trolley is represented by "GD", and the third symbol is the digital number, all starting from 001 and numbered consecutively;

[0033] ⑤ Work door management: After the personnel and tools are counted, all workers will queue up outside the work door in the order they entered. After the blockade order is issued, the Haikou Comprehensive Maintenance Section will open the work door, and each group of workers will enter in an orderly manner according to the queue order;

[0034] ⑥Entry order: Guangzhou Daji Section protection personnel, ridge excavation team, Haiwei Section professional troubleshooting team, manual sleeper replacement team, track fine-tuning team, Guangzhou Daji Section slope cleaning team, Haiwei Section power supply measurement team, inertial navigation trolley measurement team, Riyueming track inspection trolley inspection team, limit trolley inspection team, Guangzhou Daji Section fine tamping coordination team, and appearance finishing team;

[0035] ⑦ Construction blockade registration application. The liaison officers of each unit shall be on duty at the specified time. The main construction unit shall be responsible for the registration of Yuntong-46. The liaison officers of each unit shall cooperate and sign, apply to the dispatch office for construction blockade, and issue the construction dispatch order;

[0036] ⑧ For engineering train shunting operations, after the last EMU passed Wenchang Station, two large locomotives were moved from the Wenchang Integrated Maintenance Area to Track 3 at Wenchang Station, where they were connected and then joined together to await the closure. Manual switching of points within the Wenchang Integrated Maintenance Area was overseen by a dedicated person and staff member assigned to the Guangzhou Large Locomotive Depot.

[0037] In a preferred embodiment, the S4 specifically includes: the three-tamping and two-stabilizing system should be implemented on the day of cleaning and screening, and the preliminary operation of the 08 tamping car should be carried out. After the operation of the ballast unloading car and the stabilizing car is completed, the secondary tamping operation should be carried out. In the ballast unloading organization standard of the ballast unloading car operation, its falling onto the road should be controlled, investigated and organized. At the same time, the pneumatic car should be grouped, and the cleaning car should meet the technical standards for positioning operations on large slopes, the material car should meet the loading standards, the stabilizing car should meet the operating standards, and the ballast car should meet the anti-scratch and collision standards. On the day of cleaning and screening, the data of the first two-dimensional laser rangefinder after the cleaning operation is used to guide the operation of the 08 tamping car, and then the second two-dimensional laser rangefinder in front of the 09 tamping car is used to guide the operation of the 09 tamping car.

[0038] In a preferred embodiment, the S5 specifically includes: performing rough tamping operations, which are performed using a 09 tamping vehicle or a tamping stabilization vehicle, with the goal of raising low-lying areas and eliminating high points, controlling the horizontal and longitudinal sections at the same elevation, and optimizing the horizontal and longitudinal sections of the construction area to provide a good section for fine tamping. After screening, a rough tamping plan is prepared using the precise measurement data of the inertial navigation trolley operation to eliminate low-lying areas and plane deviations in the screening area, making the section smooth as a whole, and then completing the first round of track gauge fine-tuning before subsequent fine tamping.

[0039] In a preferred embodiment, the S6 specifically includes: performing fine tamping operation, when in a downslope, in a flat and longitudinal section, the slope is not greater than 0.5‰. When the downslope section is at the starting point or end point of the screening section, the starting point of the slope is extended to the non-screening section to start the downslope at 20m-50m. The fine tamping data is aimed at flattening, raising low points, and eliminating high points. The flat and longitudinal sections are controlled at the same elevation and plane. The amount of the front vehicle to start and shift the track is not greater than 30mm, and the rear vehicle is tamped throughout the whole process. The track is measured at 10mm, and tamping and stabilization are carried out according to the fine tamping data. When the track starting amount of the preceding vehicle is less than 40mm, double tamping operation is not performed. When the track starting amount of the fine tamping data is 0mm, the stabilization-only mode is adopted. When an over-limit position appears, reverse processing or manual intervention is carried out. After the rough tamping and the first track gauge fine adjustment are completed, the fine tamping plan made by the fine measurement data of the inertial navigation trolley operation is used for tamping operation. The first fine tamping is two tamping and two stabilizing, and tamping and stabilization operations are performed at the same time, and the second track gauge fine adjustment is completed before the subsequent fine tamping.

[0040] In a preferred embodiment, the S7 specifically includes: performing fine tamping operation again. After the second track gauge fine adjustment is completed, the fine tamping plan prepared by the inertial navigation operation precision measurement data is used again to perform tamping operation. The second fine tamping is two tamping and one stabilization (tamping and stabilization are combined with tamping and stabilization of the front vehicle, and tamping operation is performed by the rear vehicle), and tamping and stabilization operation is performed. At the same time, it is determined whether to perform reinforcement tamping according to the TQI and precision measurement data. At the same time, when following the slope, it must be followed in a flat and gentle longitudinal section, and the slope should be followed at a slope rate of no more than 0.3‰. When the slope section is at the starting point or end point of the screening section, the starting point of the slope should be extended to 30m-60m from the non-screening section before starting the slope. At the same time, the fine tamping data is dominated by reducing TQI. The track lifting amount of the front vehicle is no more than 15mm, the track shifting amount is no more than 10mm, and the track lifting amount of the rear vehicle is 8mm throughout the whole process. The tamping length must be more than 2km. When an over-limit location appears, reversing or manual intervention is performed, and selective double tamping is not performed.

[0041] In a preferred embodiment, the quality is reviewed and analyzed, and the appearance is sorted and accepted, including the push of the track inspection trolley, the train coupling back to the station and entering the maintenance point, the push of the limit trolley, the workers exiting the operating door, and the road clearing inspection. After the road clearing inspection is completed, the line is opened and post-opening operations are carried out at the same time, and then the project is completed.

[0042] Technical effects and advantages of the present invention:

[0043] 1. The present invention adopts a fixed marshaling mode through high-speed rail cleaning, which greatly reduces the shunting and marshaling time and effectively avoids the problem of short track length in the storage base. It promotes "digital" cleaning of the entire high-speed rail process and improves its marshaling mode. A 08 tamping car is replaced with a 09 tamping car, and a ballast workshop and a tamping and stabilizing unit are added to realize the "cleaning and tamping + rough tamping + fine tamping + reinforcement tamping" operation mode. The screening car is equipped with "08 tamping car + ballast car + stabilizing car + 09 tamping car + stabilizing car", "08 tamping car + ballast car + 09 tamping car + ballast car + tamping and stabilizing car + tamping and stabilizing car". After the operation, "three tamping and two stabilization" is achieved, further improving the line construction quality. At the same time, the ballast unloading car is formed. Since the high-speed railway screening section is fully landed, the amount of ballast used is relatively small. The screening road is mainly based on safety ballast. It is appropriate to connect 5-7 pneumatic ballast unloading cars on the same day to reduce the length of the formation and the traction weight of the locomotive.

[0044] 2. The new tooling of the screening car is equipped with an auxiliary measurement system for the screening line, which can intuitively reflect the level, direction, elevation and other data of the screening line, and there is a working device that can make corresponding fine adjustments. During the operation, by observing the auxiliary measurement system of the screening line, the level, direction and elevation control of the screening line can be understood in real time. If the horizontal deviation is too large, the operator at position five can adjust the backfill angle and the amount of ballast to reduce the horizontal difference. If the direction deviation is too large, the operator at position three should control the track shifting device to the left or right to achieve the ideal value. If the actual elevation does not reach the specified elevation (the specified elevation is 50-60mm lower than the design elevation), the operator at position three should immediately control the track lifting device to reduce the excavation depth to achieve the ideal elevation value, otherwise reduce the excavation depth appropriately.

[0045] 3. At the same time, in order to achieve the quality goal of full-process digital screening construction (TQI reaches 2.0 or below), the screening car auxiliary measurement system is installed on the screening car to control the screening car landing standard from the source. At the same time, the stabilizing car is equipped with a centering device to realize the stabilizing car curve retraction function, which greatly improves the stabilizing car operation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 This is a schematic diagram of the specific process of the high-speed railway full-process digital screening construction method of the present invention;

[0047] Figure 2 This is a schematic diagram of the steps of the high-speed railway full-process digital screening construction method of the present invention;

[0048] Figure 3 This is a schematic diagram of the cross section at the ridge mouth after operation of the present invention;

[0049] Figure 4 This is a schematic diagram of the sequential flow of group work personnel of the present invention;

[0050] Figure 5 It is a schematic diagram of the construction drill details of the present invention;

[0051] Figure 6 Schematic diagram of the details of the ballast unloading organization standard of the present invention;

[0052] Figure 7 This is a schematic diagram of the high-speed railway full-process digital screening construction method after construction is completed;

[0053] Figure 8 It is a schematic diagram of the operation process after activation of the present invention. DETAILED DESCRIPTION

[0054] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0055] It should be noted that, unless otherwise specified, the technical or scientific terms used in this application should have the common meanings understood by those skilled in the art to which the present invention belongs.

[0056] according to Figure 1-7 As shown in the figure, the high-speed rail full-process digital screening construction method includes the following steps:

[0057] S1. Confirm and review the line design data, and adopt a fixed marshaling mode to carry out the construction work process;

[0058] S2. Measure and stake the track, coordinate with the cleaning work and perform operations in accordance with quality control standards. Use the auxiliary measurement system combined with the distance measurement module to measure the track surface elevation after cleaning, thereby controlling the elevation of the cleaning section in real time.

[0059] S3. Daily construction operation process: (1) Preparation before construction. Before the formal construction, a first-day construction drill is prepared according to the first-day construction requirements. On the day of the drill, the unit is shunted from the storage point to the registration station according to the formal construction group and waits for orders. After the blockade, the engineering vehicle simulates the formal construction and drives to the work site. After arriving at the construction site, it is disassembled and aligned according to the construction plan. After disassembly, each vehicle is tested for release without disturbing the roadbed. After the test is completed, it is connected, returned to the station and stored according to the plan. The time required for each link is controlled, aiming to guide the time control of each link in the subsequent formal construction; (2) Preparation before blockade: ① Construction plan formulation. Every day, the workshop team, section monitoring cadres, special team, team leader, workshop plan and technology hold a construction quality review meeting to summarize the construction quality and existing problems of the previous day, analyze the key points of the day's construction, and formulate a targeted construction plan. The key points mainly include the following points:

[0060] Ⅰ. Key time point control: Strictly control the time for cleaning and screening machine to be put back to the station and the time for the unit to be connected and returned to the station, so as to reversely calculate the operation time of other processes and ensure the line is opened on time;

[0061] II. Determine the order and position of disassembly, alignment and connection according to the slope of the work site to prevent the screen cleaning machine from being unable to connect normally due to insufficient power on the uphill slope after construction;

[0062] III. Reasonably determine the retreat mileage based on precise measurement data;

[0063] IV. Based on the on-site investigation and the amount of track removed for the next day's work, reasonably determine the ballast unloading distance to ensure that the ballast is full before rough and fine tamping. Pay attention to avoiding overfilling of the ballast in bridge sections.

[0064] S4: Perform preliminary tamping operations, and then perform secondary tamping operations after ballast unloading and stabilization operations are completed. On the day of screen cleaning, the data from the first distance measuring module after the screen cleaning operation is used to guide the preliminary tamping operation, and the data from the second distance measuring module before the secondary tamping operation is used to guide the secondary tamping operation.

[0065] S5. Rough tamping is performed. After cleaning, the rough tamping plan is prepared using the precise measurement data of the inertial navigation operation to eliminate low-lying areas and plane deviations in the cleaning area, making the cross-section smooth as a whole. The first round of track gauge fine-tuning is then completed before the subsequent fine tamping.

[0066] S6. Perform fine tamping. After the rough tamping and the first track gauge fine adjustment are completed, perform the fine tamping plan prepared using the inertial navigation operation precision measurement data to perform the tamping operation. Simultaneously, perform the tamping stabilization operation, and then complete the second track gauge fine adjustment before the subsequent fine tamping.

[0067] S7. Perform fine tamping again. After the second gauge fine adjustment is completed, perform tamping again using the fine tamping plan prepared by the inertial navigation operation precision measurement data. Perform tamping stabilization. At the same time, determine whether to perform reinforcement tamping based on the TQI and precision measurement data.

[0068] S8. Re-inspect and analyze the quality, sort out and accept the appearance, and then complete the project;

[0069] Specifically, S1 includes: determining and reviewing the line design data, and adopting a fixed marshaling mode to marshal the working cars and ballast unloading cars. In the fixed marshaling mode adopted for cleaning and screening, a 08 tamping car is replaced with a 09 tamping car, and a ballast distribution workshop and a tamping and stabilization unit are added to realize the "cleaning and tamping + rough tamping + fine tamping + reinforcement tamping" operation mode. The cleaning car is equipped with "08 tamping car + ballast distribution car + stabilization car + 09 tamping car + stabilization car", and after the "08 tamping car + ballast distribution car + 09 tamping car + ballast distribution car + tamping and stabilization unit + tamping and stabilization unit" operation, three tamping and two stabilization are realized. Before the formal construction, a first-day construction drill is formulated according to the first-day construction needs. After the drill, an inventory is carried out, and the trains are numbered and labeled. Then, the construction is blocked, and a protection system is established for the shunting operation of the engineering train. Preparations are made before the operation. After the blockade, the engineering train is started and aligned;

[0070] In the embodiment of this application, the first day construction drill is formulated according to the first day construction requirements. Figure 5 As shown, except for handheld walkie-talkies, all tools are painted with red reflective paint or affixed with reflective signs, and are numbered in the format of "workshop abbreviation (2 digits) - tool code (2 digits) - digital serial number (3 digits)". At the same time, the queue order of each group of workers is as follows: Figure 4 As shown, the preparations before the operation include that the ridge excavation team rushes to the work site to excavate the ridge as soon as possible after entering the working gate to avoid the situation where engineering vehicles are waiting for the ridge excavation. The electrical, power supply and communication departments of the Haiwei section remove the box connection lines, transponders and other driving equipment that affect the large machine screening operation range within the operation scope, and provide safety protection for the driving equipment and cables under their respective jurisdiction.

[0071] Specifically, S2 includes: measuring and staking the line, and according to the control standards for the entry and exit of the cleaning car ridges, in conjunction with the cleaning track control standards, and based on the new cleaning car tooling cleaning line auxiliary measurement system, real-time monitoring of various data changes during the operation process, and fine-tuning of the corresponding data. At the same time, the static geometric dimensions of the line should meet the following requirements: track gauge deviation -6 to +12mm, level difference less than 25mm, triangular pit less than 30mm, rail gap less than 30mm, and curves that are visually smooth and round without reverse superelevation.

[0072] The operation is carried out in accordance with the control standards for normal operation of the cleaning vehicle, the control standards for the retreat distance and the slope of the ridge mouth, the control standards for preventing high points in the cleaning road, the control standards for the distance of "wearing sleeves" in the ridge mouth, and the control standards for the slope rate of the connection between the cleaning elevation surface and the existing elevation surface on the last day of the cleaning stage. After the cleaning is completed, the speed level is gradually increased to normal speed during the four-day speed-up tamping stage. At the same time, the connection between the cleaning elevation surface and the existing elevation surface is controlled at a slope rate of no more than 0.3‰.

[0073] In the embodiment of the present application, the control standard for the cleaning car to cut into the ridge mouth is as follows: after the cleaning car is connected at the ridge mouth, position 3 adjusts the clamp track lifting amount (track lifting amount is 0) and directs position 1 to dig at a uniform speed, and position 5 adjusts the left and right backfill, gradually controlling the angle to 5° (backfill ballast falls on the outside of the sleeper);

[0074] Normal operation control standards of the cleaning car: uniformly control the excavation speed to avoid stopping the excavation device, which will lead to high points of backfill ballast accumulation. When encountering obstacles, stuck and stopped excavation, or emergency stop, positions 3 and 4 must immediately open the left and right backfill devices to the maximum position, and accurately control the track lifting and shifting devices. During the operation, according to the amount of track dropped on site, the maximum track lifting amount of the clamp is controlled to 50mm. According to the design data, the deviation of the plane track shifting amount is controlled to ±10mm. The control of the backfill device is controlled at an angle of 5° (the backfill ballast falls on the outside of the sleepers). According to the drop situation, the left and right backfill devices are "drawn" to a fixed position. The two-dimensional laser rangefinder is measured 10m from the rear of the cleaning car, and the measured elevation is fed back to positions 3 and 4 of the cleaning car as soon as possible. It is strictly forbidden to adjust the backfill device without joint control. At the same time, each position shall not be changed at will after the working device is in the normal operating position.

[0075] The cleaning car cuts out the ridge mouth control standard. When it is 10 meters away from the ridge mouth, the No. 3 position adjusts the track lifting device (track lifting amount 0) and instructs the No. 1 position to reduce the excavation speed. The No. 5 position retracts the left and right backfill devices into place, allowing the ballast to fall onto both sides of the rail. When it reaches the ridge mouth, the working device is closed. After all working devices are retracted and locked, it slowly moves away from the ridge mouth. The elevation control standard after cleaning is met. The cleaning section on that day needs to be organized using the three-ramming and two-stabilizing construction mode. The three-ramming and two-stabilizing control method controls the actual elevation to be 40mm lower than the design elevation.

[0076] Cleaning track control standards: To ensure that the line quality meets the standards after the cleaning operation, the cleaning track auxiliary measurement system of the new tooling of the cleaning vehicle is used to monitor the changes in various data during the operation in real time and make fine adjustments to the corresponding data. The cleaning track auxiliary measurement system of the new tooling of the cleaning vehicle can intuitively reflect the level, direction, elevation and other data of the cleaning track, and there is a working device that can make corresponding fine adjustments. During the operation, by observing the cleaning track auxiliary measurement system, the level, direction and elevation control of the cleaning track can be understood in real time. If the horizontal deviation is too large, the fifth-position operator will adjust the backfill angle , the amount of ballast to be returned is used to reduce the horizontal difference. If the directional deviation is too large, the operator at position 3 should control the track shifting device to the left or right to reach the value. If the actual elevation does not reach the specified elevation (the specified elevation is 50-60mm lower than the design elevation), the operator at position 3 should immediately control the track lifting device to reduce the excavation depth to achieve the ideal elevation value. Otherwise, the excavation depth should be appropriately reduced. Since the high-speed railway screening construction does not use a gantry track lifting machine, when the static geometric dimension detection does not meet the tamping vehicle access conditions, a rack press is used to manually intervene to level the line to ensure construction safety.

[0077] The excavation retreat distance and the control standard of the ridge slope: the ridge slope standard, in order to strengthen the control of the ridge slope rate and reduce the excavation retreat distance, the 08 tamping car is strictly prohibited from tamping into the old road, and the 09 tamping car is controlled at 2‰ of the ridge slope. The 09 tamping car should complete the ridge slope operation in one go to avoid frequent reversing. The excavation starting point standard, after the three cleaning and screening roads are stabilized, the elevation ≥-30mm is used as the excavation retreat starting point, that is, when the end point has an existing elevation of 20mm, the excavation retreat distance is 25m, when the end point has an existing elevation of 30mm, the excavation retreat distance is 30m, and when the end point has an existing elevation of 40mm, the excavation retreat distance is 35m. The ridge measurement is after the daily cleaning and screening operation is completed. The Amburg trolley must cover 100 meters before and after the ridge. The next day's excavation retreat starting point is determined based on the Amburg measurement data, but it does not exceed 40m.

[0078] Control standards for preventing high points in the cleaning track: When the cleaning vehicle is temporarily stopped during operation, the backfill on both sides must be opened to both sides in time to prevent excessive ballast from entering the parking area. The daily retreat distance is determined based on the measurement data. After three tamping and two stabilization, the overall longitudinal section elevation is controlled at -40mm. During fine tamping operation, double tamping operation is strictly prohibited when the track lift of the tamping and stabilization joint is less than 40mm. At the junction of the new and old tracks at the starting point of the cleaning, the tamping and stabilization joint should be used to control the slope at a rate of 0.8‰ from the old track. The slope of the ridge at the end of the daily cleaning should be controlled at a rate of 2‰. The 08 tamping vehicle is strictly prohibited from operating on the old track. The 09 tamping vehicle should be flush with the existing elevation when it reaches the end point along the slope.

[0079] Control standard of excavation distance of ridge mouth: Excavation position of ridge mouth, combined with the previous construction situation, the cross-section structure of ridge mouth after operation is as follows: Figure 3As shown, the Nantou 09 tamping vehicle follows the slope at a 2‰ slope rate at the starting ridge to reduce the length of the "sleeve insertion" at the ridge. The "sleeve insertion" excavation position control standard at the ridge is maintained. To ensure that no high points appear at the junction that affect subsequent fine tamping operations, the 12900 cleaning vehicle closes the ridge and covers the starting ridge of the 12901 cleaning vehicle. Two-dimensional laser rangefinder data is used to determine the excavation length. At the cleaning junction, the rail surface elevation after three tamping and two stabilizations must be 30-40mm lower than the designed section.

[0080] Control standard for the slope rate of the connection between the cleaning elevation surface and the existing elevation surface on the last day of the cleaning stage: After the cleaning is completed, there will be a four-day speed-up tamping stage, and the speed level will gradually increase to normal speed. The connection between the cleaning elevation surface and the existing elevation surface is particularly important. In order to ensure the control of the track start amount of the subsequent two rounds of fine tamping, the connection between the cleaning elevation surface and the existing elevation surface should be controlled at a slope rate of no more than 0.3‰. Excessive slope rate will cause the track start amount of the first and second rounds of fine tamping in the connection section to be too large, thus affecting the final TQI situation.

[0081] Specifically, S4 includes: on the day of cleaning, the three-tamping and two-stabilizing system should be implemented, and the preliminary operation of the 08 tamping car should be carried out, and the secondary tamping operation should be carried out after the operation of the ballast unloading car and the stabilizing car is completed. In the ballast unloading organization standard of the ballast unloading car operation, its falling onto the road should be controlled, investigated, and organized. At the same time, the pneumatic cars should be grouped, and the cleaning car should meet the technical standards for alignment operations on large slopes, the material car should meet the loading standards, the stabilizing car should meet the operation standards, and the ballast car should meet the anti-scratch and collision standards. On the day of cleaning, the data of the first two-dimensional laser rangefinder after the cleaning operation should be used to guide the operation of the 08 tamping car, and the second two-dimensional laser rangefinder in front of the 09 tamping car should be used to guide the operation of the 09 tamping car.

[0082] In the embodiment of the present application, the cleaning car strictly follows the quality control standards to perform the cleaning operation. Before the cleaning operation in the construction section, a two-dimensional laser rangefinder is used to measure the existing track surface elevation. After the construction operation, the cleaning car auxiliary measurement system is combined with a two-dimensional laser rangefinder to measure the track surface elevation after cleaning, thereby controlling the cleaning section elevation in real time.

[0083] At the same time, the organization standards for ballast unloading are as follows: 1. Track control, ballast unloading investigation, ballast unloading organization, and the number of wind turbine trains Figure 6 As shown;

[0084] Technical standards for alignment of cleaning cars on steep slopes: When aligning on steep slopes, before going uphill, first remove the cleaning car and other large machine units behind it to reduce the weight of the entire train. A dedicated person will align the train at the ridge mouth, and the alignment will be carried out at distances of 300 meters, 100 meters, 50 meters, 10 meters, and 2 meters. When the locomotive with the cleaning car stops for alignment, the train air duct will be depressurized by more than 100KPa, the entire train will be braked for pressure maintenance, and then the train will be unhooked. When the cleaning car is aligned alone, it will operate in the operating gear, and when it stops, the train air duct will be depressurized by 100KPa for pressure maintenance and the brake will be applied;

[0085] Material truck loading standard: Each cleaning truck is equipped with 4 material loading trucks to load the soil. Before construction, the soil condition of the roadbed and weather conditions should be investigated. One material truck should be loaded for every 150 meters of cleaning.

[0086] Stabilization operation standard: During construction operations, the stabilization frequency of the stabilization vehicle is 32 Hz, and the stabilization frequency on the bridge is 30 Hz, and the connection part extends forward to 50 meters;

[0087] Anti-scratch standards for ballast trucks: 1. For obstacles on the line, the sleepers at the corresponding positions adjacent to the line are sprayed with yellow paint to make obvious marks. 2. During the operation, a special person is sent from the front end to investigate the obstacle situation. When approaching an obstacle, the operating speed is slowed down and the speed shall not exceed 2km / h. For major obstacles such as transponders, the vehicle is stopped 10 meters away from the obstacle, the middle plow is retracted, and the vehicle slowly approaches the obstacle. After the vehicle stops steadily, the middle plow and other working devices are lowered to carry out fixed-point reverse ballast operation (operating in the direction away from the obstacle).

[0088] Specifically, S5, S6, and S7 include: performing rough tamping operations, which are performed using a 09 tamping vehicle or a tamping stabilization vehicle, with the goal of raising low-lying areas and eliminating high points, controlling the horizontal and longitudinal sections at the same elevation, and optimizing the horizontal and longitudinal sections of the construction area to provide a good section for fine tamping. After screening, a rough tamping plan is prepared using the precise measurement data of the inertial navigation trolley to eliminate low-lying areas and plane deviations in the screening area, so that the section is smooth overall. The first track gauge adjustment is completed before subsequent fine tamping, and fine tamping operations are performed. When in a downslope, in areas where the horizontal and longitudinal sections are gentle, the slope is adjusted at a slope rate of no more than 0.5‰. When the downslope section is at the starting or end point of the screening section, the starting point of the slope is extended to the non-screening section at 20m-50m to start the downslope.

[0089] The precision tamping data aims to level out, raise low spots and eliminate high points, and control the horizontal and longitudinal sections at the same elevation and plane. The lifting and shifting amount of the front vehicle is no more than 30mm, and the lifting amount of the rear vehicle is 10mm throughout the tamping process. The tamping and stabilization joint is tamped according to the precision tamping data. When the lifting amount of the front vehicle of the tamping and stabilization joint is less than 40mm, no double tamping operation is performed. When the lifting amount of the precision tamping data is 0mm, the stabilization-only mode is adopted. When an over-limit location appears, reverse processing or manual intervention is performed. After the rough tamping and the first track gauge fine adjustment are completed, the precision tamping plan made with the precision measurement data of the inertial navigation trolley operation is used for tamping operations. The first precision tamping is two tamping and two stabilization, and tamping and stabilization operations are performed at the same time. The second track gauge fine adjustment is completed before the subsequent precision tamping, and precision tamping operations are performed again. After the second track gauge fine adjustment is completed, the precision measurement data of the inertial navigation operation is used again. According to the prepared fine tamping plan, tamping operations are carried out. The second fine tamping is two tamping and one stabilizing (tamping and stabilization are connected with tamping and stabilization by the front car, and tamping operations are carried out by the rear car), and tamping and stabilization operations are carried out. At the same time, it is determined whether to carry out reinforcement tamping, and when following the slope, it must be followed in a flat and gentle longitudinal section, and the slope rate should not exceed 0.3‰. When the slope section is at the starting point or end point of the screening section, the starting point of the slope should be extended to 30m-60m from the non-screening section before starting the slope. At the same time, the fine tamping data is dominated by lowering TQI. The amount of track lifting by the front car is not more than 15mm, and the amount of track shifting is not more than 10mm. The amount of track lifting by the rear car is 8mm throughout the whole process. The tamping length must be more than 2km. When an over-limit place appears, reverse processing or manual intervention is carried out, and selective double tamping is not carried out.

[0090] In the embodiment of the present application, the rough tamping is two tampings and two stabilizing, the first round of fine tamping is two tampings and one stabilizing, and the elevation is controlled to be 25 mm lower than the design, the second round of fine tamping and reinforced tamping is two tampings and one stabilizing, and the elevation is controlled to be 10 mm lower than the design, and the track gauge of the track fine adjustment is controlled within 0.15.

[0091] Specifically, S8 includes: quality inspection and analysis, appearance finishing and acceptance, including the push of the track inspection trolley, the train coupling back to the station and entering the maintenance point, the push of the limit trolley, the operator exiting the operation door, the road clearing inspection, and the opening of the line after the road clearing inspection is completed. At the same time, post-opening operations are carried out, and then the project is completed.

[0092] In the embodiment of the present application, the urban large machine section is responsible for the rough appearance of the line, the fine finishing is the responsibility of the urban comprehensive maintenance section, and the track inspection trolley is pushed by the urban comprehensive maintenance section. The cleaning and screening construction requires pushing 3 Sun Moon Bright track inspection trolleys every day to follow two groups of cleaning and screening units and one group of tamping and stabilizing units to inspect the operation quality of the construction section and provide feedback on problems. After the construction is completed, according to Figure 7 Carry out the work as shown. After the road clearing and inspection are completed, apply for the line opening.

[0093] See also Figure 8As shown, as another implementation method of this analysis method, it includes: after opening, the city comprehensive maintenance section is responsible for installing a monitoring ball at the starting and ending ridges of the screening area on the same day, implementing 24-hour remote monitoring, and promptly handling any abnormalities found, and adding EMUs for inspection.

[0094] The Urban Comprehensive Maintenance Section is responsible for the arrangement of technical personnel to ride on the first train after the line is opened, and competent personnel will be arranged to ride on the subsequent trains at 8:00, 10:00, 13:00, 17:00, and 20:00. Problems found during the rides should be reported in a timely manner. At the same time, the "operation and maintenance separation" model of the urban ring high-speed railway construction is referenced. Figure 8 .

[0095] This analysis method provides a scientific, efficient and intelligent analysis theory for the digital screening construction of the entire high-speed railway process:

[0096] The high-speed rail screening adopts a fixed marshaling mode, which greatly reduces the shunting and marshaling time. At the same time, it effectively avoids problems such as the short track length of the storage base. It promotes the "digital" screening of the entire high-speed rail process, improves its marshaling mode, replaces a 08 tamping car with a 09 tamping car, adds a ballast workshop and a group of tamping and stabilizing units, and realizes the "screening and tamping + rough tamping + fine tamping + reinforcement tamping" operation mode. The cleaning car is equipped with "08 tamping car + ballast car + stabilizing car + 09 tamping car + stabilizing car", "08 tamping car + ballast car + 09 tamping car + ballast car + tamping and stabilizing car + tamping and stabilizing car" after the operation, realizing "three tamping and two stabilization", further improving the line construction quality, and at the same time, the unloading ballast car formation. Since the high-speed railway cleaning and screening section is fully down-lined, the amount of ballast used is relatively small, and the cleaning track is mainly based on safety ballast. It is appropriate to connect 5-7 pneumatic unloading ballast cars on the same day to reduce the length of the formation and the weight of the locomotive traction.

[0097] The new auxiliary measurement system of the screening line on the screening vehicle can intuitively reflect the level, direction, elevation and other data of the screening line, and there is a working device that can make corresponding fine adjustments. During the operation, by observing the auxiliary measurement system of the screening line, the level, direction and elevation control status of the screening line can be understood in real time.

[0098] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or make equivalent replacements for some or all of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention, and they should all be included in the scope of the claims and description of the present invention.

Claims

1. The high-speed rail full-process digital screening construction method is characterized by: The steps include: S1. Confirm and review the line design data, and adopt a fixed marshaling mode to carry out the construction work process; S2. Measure and stake the track, coordinate with the cleaning work, and operate according to the quality control standards of the cleaning track. Use the auxiliary measurement system combined with the distance measurement module to measure the track surface elevation after cleaning, so as to control the elevation of the cleaning section in real time. S3. Daily construction operation process: (1) Preparation before construction. Before the formal construction, a first-day construction drill is prepared according to the first-day construction requirements. On the day of the drill, the unit is shunted from the storage point to the registration station according to the formal construction group and waits for orders. After the blockade, the engineering vehicle simulates the formal construction and drives to the work site. After arriving at the construction site, it is disassembled and aligned according to the construction plan. After disassembly, each vehicle is tested for release without disturbing the roadbed. After the test is completed, it is connected, returned to the station and stored according to the plan. The time required for each link is controlled, aiming to guide the time control of each link in the subsequent formal construction; (2) Preparation before blockade: ① Construction plan formulation. Every day, the workshop team, section monitoring cadres, special team, team leader, workshop plan and technology hold a construction quality review meeting to summarize the construction quality and existing problems of the previous day, analyze the key points of the day's construction, and formulate a targeted construction plan. The key points mainly include the following points: Ⅰ. Key time point control: Strictly control the time for cleaning and screening machine to be put back to the station and the time for the unit to be connected and returned to the station, so as to reversely calculate the operation time of other processes and ensure the line is opened on time; II. Determine the order and position of disassembly, alignment and connection according to the slope of the work site to prevent the screen cleaning machine from being unable to connect normally due to insufficient power on the uphill slope after construction; III. Reasonably determine the retreat mileage based on precise measurement data; IV. Based on the on-site investigation and the amount of track removed for the next day's work, reasonably determine the ballast unloading distance to ensure that the ballast is full before rough and fine tamping. Pay attention to avoiding overfilling of the ballast in bridge sections. S4: Perform preliminary tamping operations, and then perform secondary tamping operations after ballast unloading and stabilization operations are completed. On the day of screen cleaning, the data from the first distance measuring module after the screen cleaning operation is used to guide the preliminary tamping operation, and the data from the second distance measuring module before the secondary tamping operation is used to guide the secondary tamping operation. S5. Rough tamping is performed. After cleaning, the rough tamping plan is prepared using the precise measurement data of the inertial navigation operation to eliminate low-lying areas and plane deviations in the cleaning area, making the cross-section smooth as a whole. The first round of track gauge fine-tuning is then completed before the subsequent fine tamping. S6. Perform fine tamping. After the rough tamping and the first track gauge fine adjustment are completed, perform the fine tamping plan prepared using the inertial navigation operation precision measurement data to perform the tamping operation. Simultaneously, perform the tamping stabilization operation, and then complete the second track gauge fine adjustment before the subsequent fine tamping. S7. Perform fine tamping again. After the second gauge fine adjustment is completed, perform tamping again using the fine tamping plan prepared by the inertial navigation operation precision measurement data. Perform tamping stabilization. At the same time, determine whether to perform reinforcement tamping based on the TQI and precision measurement data. S8. Re-inspect and analyze the quality, organize and accept the appearance, and then complete the project.

2. The high-speed railway full-process digital screening construction method according to claim 1 is characterized by: The S1 specifically includes: determining and reviewing the line design data, and adopting a fixed marshaling mode to marshal the working vehicles and ballast unloading vehicles. In the fixed marshaling mode adopted for cleaning and screening, a 08 tamping vehicle is replaced with a 09 tamping vehicle, and a ballast distribution workshop and a tamping and stabilizing unit are added to realize the "cleaning and tamping + rough tamping + fine tamping + reinforcement tamping" operation mode. The cleaning and screening vehicle is equipped with "08 tamping vehicle + ballast distribution vehicle + stabilizing vehicle + 09 tamping vehicle + stabilizing vehicle", "08 tamping vehicle + ballast distribution vehicle + 09 tamping vehicle + ballast distribution vehicle + tamping and stabilizing unit + tamping and stabilizing unit". After the operation, three tamping and two stabilization are realized. Before the formal construction, a first-day construction drill is formulated according to the first-day construction needs. After the drill, an inventory and statistics are carried out, and the vehicles are numbered and labeled. Then, the construction is blocked, and a protection system is established for the shunting operation of the engineering train. Preparations are made before the operation. After the blockade, the engineering train is started and positioned.

3. The high-speed railway full-process digital screening construction method according to claim 1 is characterized by: The S2 specifically includes: measuring and placing stakes on the line, and according to the control standards for the entry and exit of the screening car ridge mouth, in conjunction with the screening road control standards, and according to the new tooling screening car cleaning line auxiliary measurement system, real-time monitoring of various data changes during the operation process, and fine-tuning of the corresponding data. At the same time, the static geometric dimensions of the line should meet the following requirements: gauge deviation of -6 to +12mm, level difference less than 25mm, triangular pit less than 30mm, rail gap less than 30mm, and curve visually smooth and without reverse superelevation. The operation is carried out in conjunction with the normal operation control standards of the screening car, the setback distance and the longkou slope control standards, the screening road prevention high point control standards, the ridge "sleeve-wearing" excavation distance control standards, and the slope rate control standards for the connection between the screening elevation surface and the existing elevation surface on the last day of the screening stage. After the screening is completed, the speed level is gradually increased to normal speed during the four-day speed-up tamping stage, and the connection between the screening elevation surface and the existing elevation surface is controlled at a slope rate of no more than 0.3‰.

4. The high-speed railway full-process digital screening construction method according to claim 3 is characterized by: The new cleaning line auxiliary measurement system of the cleaning vehicle can intuitively reflect the level, direction, elevation and other data of the cleaning line, and has a working device that can make corresponding fine adjustments. During the cleaning operation, by observing the cleaning line auxiliary measurement system, the level, direction and elevation control status of the cleaning line can be understood in real time. If the horizontal deviation is too large, the fifth-position operator can adjust the backfill angle and the amount of ballast to reduce the horizontal difference. Ⅰ. If the horizontal deviation is too large, the operator at position 5 can adjust the backfill angle and the amount of ballast to reduce the horizontal difference; II. If the direction deviation is too large, the operator at position 3 should control the track shifting device to the left or right to achieve the desired value; III. If the actual elevation does not reach the specified elevation, and the specified elevation is 50-60mm lower than the design elevation, the operator at position 3 should immediately control the track-lifting device to lower the excavation depth to achieve the ideal elevation value, otherwise reduce the excavation depth appropriately.

5. The high-speed railway full-process digital screening construction method according to claim 1 is characterized by: In step S3, the workshop plans to prepare a construction plan according to the approved daily construction plan: ①Convene a large machine cleaning, screening, and completion meeting, organize the convening of the screening and completion meeting, and organize the monitoring personnel at all levels of the Guangzhou Large Machine Section, workshop management personnel, various operating teams, outsourced construction teams, and professional leaders of the Haikou Comprehensive Maintenance Section to attend the meeting; ② Participate in the preparatory meeting and summary meeting: organized by the train maintenance section, with participation from the main construction unit, the skylight sharing unit, and all cooperating units; ③Convene a second branch meeting of the outsourced construction team and organize the second branch meeting of the outsourced construction team in accordance with regulations; ④ Personnel are in place and tools and materials are counted. All workers, tools, materials, etc. entering and leaving the work door should be counted and counted. All tools should be numbered and affixed with reflective labels. Numbering rules: Except for handheld walkie-talkies, all tools should be painted with red reflective paint or affixed with reflective labels. They should be numbered and labeled in the format of "workshop abbreviation (2 digits) - tool code (2 digits) - 3-digit digital serial number", such as: QS-GD-001, the first symbol QS represents the name of the screening workshop, the second symbol represents the tool code, the inertial navigation trolley is represented by "GD", and the third symbol is the digital number, starting from 001 and numbered consecutively; ⑤ Work door management: After the personnel and tools are counted, all workers will queue up outside the work door in the order they entered. After the blockade order is issued, the Haikou Comprehensive Maintenance Section will open the work door, and each group of workers will enter in an orderly manner according to the queue order; ⑥Entry order: Guangzhou Daji Section protection personnel, ridge excavation team, Haiwei Section professional troubleshooting team, manual sleeper replacement team, track fine-tuning team, Guangzhou Daji Section slope cleaning team, Haiwei Section power supply measurement team, inertial navigation trolley measurement team, Riyueming track inspection trolley inspection team, limit trolley inspection team, Guangzhou Daji Section fine tamping coordination team, and appearance finishing team; ⑦ Construction blockade registration application. The liaison officers of each unit shall be on duty at the specified time. The main construction unit shall be responsible for the registration of Yuntong-46. The liaison officers of each unit shall cooperate and sign, apply to the dispatch office for construction blockade, and issue the construction dispatch order; ⑧ For engineering train shunting operations, after the last EMU passes through Wenchang Station, the large locomotive is divided into two trains and transferred from the Wenchang Comprehensive Maintenance Area to Track 3 of Wenchang Station, where they are connected into one train and wait for blocking. The manual switching of switches in the Wenchang Comprehensive Maintenance Area is supervised by a dedicated person and cadres arranged by the Guangzhou Large Locomotive Section.

6. The high-speed railway full-process digital screening construction method according to claim 1 is characterized by: The S4 specifically includes: the three-tamping and two-stabilizing system should be implemented on the day of cleaning and screening, and the preliminary operation of the 08 tamping car should be carried out. After the operation of the ballast unloading car and the stabilizing car is completed, the secondary tamping operation should be carried out. In the ballast unloading organization standard of the ballast unloading car operation, its falling onto the road should be controlled, investigated and organized. At the same time, the pneumatic cars should be grouped, and the cleaning car should meet the technical standards for positioning operations on large slopes, the material car should meet the loading standards, the stabilizing car should meet the operating standards, and the ballast car should meet the anti-scratch and collision standards. On the day of cleaning and screening, the data of the first two-dimensional laser rangefinder after the cleaning operation should be used to guide the operation of the 08 tamping car, and then the second two-dimensional laser rangefinder in front of the 09 tamping car should be used to guide the operation of the 09 tamping car.

7. The high-speed railway full-process digital screening construction method according to claim 1 is characterized by: The S5 specifically includes: performing rough tamping operations, which are performed using a 09 tamping vehicle or a tamping stabilization vehicle, with the goal of raising low-lying areas and eliminating high points, controlling the horizontal and longitudinal sections at the same elevation, and optimizing the horizontal and longitudinal sections of the construction area to provide a good section for fine tamping. After screening, a rough tamping plan is prepared using the precise measurement data of the inertial navigation trolley operation to eliminate low-lying areas and plane deviations in the screening area, making the section smooth as a whole, and completing the first round of track gauge fine-tuning before subsequent fine tamping.

8. The high-speed railway full-process digital screening construction method according to claim 1 is characterized by: The S6 specifically includes: performing fine tamping operation, when in a downslope, in a flat and longitudinal section, the slope is followed at a slope rate of no more than 0.5‰; when the downslope section is at the starting point or end point of the screening section, the starting point of the slope is extended to the non-screening section to start the downslope at 20m-50m; the fine tamping data is aimed at flattening, raising low points, and eliminating high points; the horizontal and longitudinal sections are controlled at the same elevation and plane; the front vehicle's track lifting and shifting amount is no more than 30mm, and the rear vehicle's track lifting amount is 10mm throughout the entire process; The tamping and stabilization link tamps according to the fine tamping data. When the track lift of the preceding vehicle is less than 40mm, double tamping operation is not performed. When the track lift of the fine tamping data is 0mm, the stabilization-only mode is adopted. When an over-limit position appears, reversing or manual intervention is performed. After the rough tamping and the first track gauge fine adjustment are completed, the fine tamping plan prepared by the fine measurement data of the inertial navigation trolley operation is used for tamping operation. The first fine tamping is two tamping and two stabilizing, and tamping and stabilization operations are performed at the same time. The second track gauge fine adjustment is completed before the subsequent fine tamping.

9. The high-speed railway full-process digital screening construction method according to claim 1 is characterized by: The S7 specifically includes: performing fine tamping operation again, and after the second track gauge fine adjustment is completed, the fine tamping plan prepared by the inertial navigation operation precision measurement data is used again to perform tamping operation, the second fine tamping is two tamping and one stabilization (tamping and stabilization are combined with tamping and stabilization of the front car, and tamping operation of the rear car), and tamping stabilization operation is performed, and at the same time, it is determined whether to perform reinforcement tamping according to the TQI and precision measurement data. At the same time, when following the slope, it must be followed in the flat and longitudinal sections. The slope should be followed at a slope rate of no more than 0.3‰. When the slope section is at the starting point or end point of the screening section, the starting point of the slope should be extended to the non-screening section to 30m-60m before starting to follow the slope. At the same time, the fine tamping data is dominated by reducing TQI, the track lifting amount of the front car is no more than 15mm, the track shifting amount is no more than 10mm, the track lifting amount of the rear car is 8mm throughout the whole process, and the tamping length must be more than 2km. When an over-limit place appears, reverse processing or manual intervention is performed, and selective double tamping is not performed.

10. The high-speed railway full-process digital screening construction method according to claim 1 is characterized by: The S8 specifically includes: quality re-inspection and analysis, and appearance finishing and acceptance, including the pushing of the track inspection trolley, the train coupling back to the station and entering the maintenance point, the pushing of the limit trolley, the operating personnel exiting the operating door, and the road clearing inspection. After the road clearing inspection is completed, the line is opened and post-opening operations are carried out at the same time, and then the project is completed.

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