Continuous gradient tunnel construction method for expanding excavation from small section to large section
Through the continuous gradient tunnel construction method of small section expansion into large sections, the gradient guide tunnel support structure and monitoring system are used to solve the safety problems in the construction of ultra-large cross-section tunnels, and the stability and efficiency of the construction process are achieved.
Patent Information
- Application Number
- CN202510750055.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-06
- Publication Date
- 2025-09-02
AI Technical Summary
In the construction of existing tunnels, the construction at the junction of the super-large span section and ordinary tunnels is low in safety. The top-sliding construction leads to the redistribution of surrounding rock stress, and the support structure bears uneven loads, which poses a great risk.
The continuous gradient tunnel construction method is adopted with a small section expanded from digging into a large section. Through the detailed expansion plan of the lead hole to the upper step of the main hole, the gradient guide hole support structure and monitoring system are used to gradually expand the excavation to form a large section, including the reinforcement of advance small conduits, steel frame and anchor rod support, and the construction is assisted by infrared light guide.
The smooth transition of tunnel construction has been achieved, the risks and uncertainties during the construction process have been reduced, and the safety and efficiency of construction have been improved.
Smart Images
Figure CN120575883A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of tunnel construction, and in particular relates to a method for constructing a continuous and gradual tunnel by expanding and excavating a small section into a large section. Background Art
[0002] The rapid development of tunnels requires more efficient and safer tunnel construction technologies to adapt to complex terrain and functional limitations. The construction of variable-section tunnels has become a critical issue in tunnel engineering. Because tunnels of varying cross-sections must be constructed alternately within the same section, safely and efficiently transitioning between these cross-sections becomes both a key and challenging aspect of project construction. This construction method requires full consideration of safety and efficiency during both design and execution.
[0003] In actual construction, the cross-sectional span difference at the junction of the two tunnels is too large, especially the junction of the extra-large span tunnel and the ordinary tunnel, which brings huge challenges to the construction.
[0004] Currently, existing construction techniques mostly utilize top-lift construction for tunnel expansion from the approach tunnel to the main tunnel. First, a top-lift excavation is performed at the top of the approach tunnel to form a temporary expansion section. Excavation is then gradually expanded to the main tunnel until the designed dimensions of the main tunnel are reached. Top-lift construction creates an open surface at the top of the tunnel, causing stress redistribution in the surrounding rock and easily leading to stress concentration in the top-lift area. The supporting structures (such as steel arches and anchors) are subject to large, uneven loads, and the stress conditions on the support structures are complex. Consequently, this construction method has a low safety factor and carries certain risks.
[0005] Under conditions with large span differences, existing construction methods need to be improved in safety to ensure smooth construction. Therefore, to ensure that the formation of a gradual pilot tunnel facilitates a smooth transition to a larger cross-section and reduces risks and uncertainties during construction, this paper proposes a continuous gradual tunnel construction method that expands from a small cross-section to a large cross-section. Summary of the Invention
[0006] The technical problem to be solved by the present invention is to provide a continuous gradual tunnel construction method for expanding a small section into a large section. The purpose is to achieve a smooth transition to a larger section when the lead tunnel is expanded into the main tunnel, thereby reducing the risks and uncertainties in the construction process.
[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is: a continuous gradual tunnel construction method for expanding and excavating a small section into a large section, comprising the following steps: S1, designing a detailed expansion plan from a small-section approach tunnel to the upper step of a large-section main tunnel, the expansion plan including the expansion range, the expansion slope within the range of 15° to 25°, the distance from the approach tunnel to the main tunnel and the intermediate geological conditions, and preparing to configure corresponding gradual guide tunnel support measures; S2, excavating the small-section approach tunnel to the planned mileage of the large-section main tunnel; S3, excavating upward from the approach tunnel to the upper step of the main tunnel along the planned expansion slope to form a gradual guide tunnel. The cross-section of the gradual pilot tunnel changes continuously from the small cross-section of the pilot tunnel to the upper step cross-section of the main tunnel; S4, when the gradual pilot tunnel is excavated to the upper step of the main tunnel, the excavation continues to advance horizontally from the upper step of the main tunnel, and the middle step of the main tunnel is excavated on the upper step of the main tunnel after it is penetrated, and the upslope section of the gradual pilot tunnel is excavated horizontally in the reverse direction; S5, as the middle step of the main tunnel continues to be excavated horizontally forward, the lower step of the main tunnel is excavated on the middle step of the main tunnel after it is penetrated, and the downslope section of the gradual pilot tunnel is excavated horizontally in the reverse direction, the small-section pilot tunnel is continuously expanded into the large-section main tunnel, and the tunnel is excavated through; S6, the invert arch filling and secondary lining of the tunnel are implemented to complete the cross-section gradual change construction.
[0008] In some embodiments, steps S2-S5 are also included in which, during the excavation process, the surrounding rock in front of the excavation face is reinforced and supported by advanced small conduits. The surrounding rock is reinforced by grouting with advanced small conduits. The advanced small conduit support is used in conjunction with the steel frame, and the end of the small conduit is welded to the I-beam frame into one.
[0009] In certain embodiments, in step S1, the excavation expansion plan further includes setting support parameters for the gradual pilot tunnel support structure according to the surrounding rock conditions, wherein the support parameters include specifications and forms of steel frames and anchor rods, steel frame spacing, and anchor rod density.
[0010] In certain embodiments, in step S3, a support structure including anchor rods and steel frames is adopted for permanent support of the gradual guide tunnel under construction according to the surrounding rock conditions.
[0011] In certain embodiments, in step S3, during the construction of the gradual guide tunnel, secondary lining construction is performed on the small-section guide tunnel.
[0012] In certain embodiments, in step S3 and step S4, the excavation of the gradual guide tunnel and the excavation of the upper steps of the main tunnel are respectively carried out using the mining method.
[0013] In some embodiments, in step S4, after the excavation of the upper step of the main tunnel has advanced to the distance specified in the expansion plan, the middle step of the main tunnel and the corresponding gradient guide tunnel slope of the same height are excavated, so that the upper step of the main tunnel and the middle step of the main tunnel maintain the set excavation step distance. In step S5, after the excavation of the middle step of the main tunnel has advanced to the distance specified in the expansion plan, the lower step of the main tunnel and the corresponding gradient guide tunnel slope of the same height are excavated, so that the middle step of the main tunnel and the lower step of the main tunnel maintain the set excavation step distance.
[0014] In some embodiments, in step S6, an inverted arch filling construction is performed to form a foundation pavement, and the filling material is evenly poured into the formwork after vibration to ensure that there are no gaps and uneven areas. The pouring is then cured to ensure the strength and stability of the material.
[0015] In some embodiments, in step S3, during the process of expanding the gradual guide tunnel, an infrared light guide is used to guide the gradual section with infrared light. The infrared light guide includes a support frame, an equipment frame arranged on the support frame, and infrared light lamps arranged on the four walls of the equipment frame and pivoted around them. An angle locking mechanism is provided between each of the infrared light lamps and the equipment frame. The infrared light lamp includes a lamp housing, a plurality of infrared light sources arranged side by side in the lamp housing, a spherical collimating lens installed in front of each infrared light source, a cylindrical lens arranged outside the spherical collimating lens, a slit aperture, and an anti-reflection protective window fixedly covered on the lamp housing. When in use, by adjusting the angle of each of the infrared light lamps, the infrared rays emitted by the four infrared light lamps are projected onto the excavation section to form a light spot to assist in guidance.
[0016] In some embodiments, in step S3, the gradual guide tunnel is provided with a monitoring system, which includes displacement sensors and / or stress sensors. The displacement sensors are installed on the top and side walls of the gradual guide tunnel, and the stress sensors are installed on the steel frames and anchor rods. The system monitors the stress conditions of the surrounding rock deformation support structure in real time and dynamically adjusts the support parameters of the support structure according to the monitoring data. The data of the displacement sensor and / or stress sensor is transmitted to the control center in real time through the wireless transmission system. The control center sends a notification of adjusting the support parameters in real time based on the data analysis results to ensure construction safety and efficiency.
[0017] The scope of the present invention is not limited to technical solutions formed by a specific combination of the above-mentioned technical features, but also includes other technical solutions formed by any combination of the above-mentioned technical features or their equivalents. For example, technical solutions formed by replacing the above-mentioned features with (but not limited to) technical features with similar functions disclosed in this application.
[0018] Due to the application of the above technical scheme, the present invention has the following advantages compared with the prior art: the present invention directly expands upward through a small-section guide tunnel, and through continuous gradual expansion, the cross-section of the gradual guide tunnel is continuously and gradually changed from the small cross-section of the guide tunnel to the upper step section of the main tunnel, and then the steps in the main tunnel and the uphill section of the gradual guide tunnel, as well as the lower steps of the main tunnel and the downhill section of the gradual guide tunnel are excavated in sequence according to the plan, and a smooth transition is made from the small-section guide tunnel to the large-section main tunnel, with high expansion efficiency, and safety and stability. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 Flowchart of a construction method for expanding a diversion tunnel into a continuous and gradual tunnel according to an embodiment of the present invention; Figure 2 This is a schematic diagram of a longitudinal section of construction in an embodiment of the present invention; Figure 3 This is a schematic diagram of a construction plane in an embodiment of the present invention; Figure 4 Schematic diagram of construction section support in an embodiment of the present invention; Figure 5 This is a front view diagram of the infrared light guide instrument; Figure 6 It is a schematic diagram of the internal structure of the equipment frame after the side section; The marks in the figure are: 1. Guide tunnel; 2. Gradual guide tunnel; 3. Upper step of main tunnel; 4. Middle step of main tunnel; 5. Lower step of main tunnel; 6. Surrounding rock; 7. Initial support; 8. Infrared light guide; 81. Support frame; 811. Main stand; 812. Adjustment leg; 82. Equipment frame; 83. Infrared light; 831. Infrared light source; 84. Angle locking mechanism; 841. Adjustment screw; 842. Slide plate; X1, first axis; X2, second axis; X3, third axis. DETAILED DESCRIPTION
[0020] 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.
[0021] As shown in the accompanying drawings, in this embodiment, a method for constructing a continuous and gradual tunnel from a small cross-section to a large cross-section includes the following steps: S1. Design a detailed excavation plan for the small-section pilot tunnel to the upper step of the large-section main tunnel, and prepare corresponding gradient pilot tunnel support measures. Excavation planning includes the excavation range, the excavation slope of 15° upward, left and right, the distance from the diversion tunnel to the main tunnel and the geological conditions in the middle. After the 15° excavation slope is confirmed, the distance from the diversion tunnel to the main tunnel can be obtained. Excavation expansion planning also includes the placement of advanced small-diameter guide tube reinforcement support, gradual guide tunnel support structure, excavation step distance, lining construction, etc. according to the surrounding rock conditions. Excavation expansion planning also includes setting support parameters for the gradient pilot tunnel support structure based on the surrounding rock conditions. Support parameters include the specifications and forms of steel frames and anchors, steel frame spacing, and anchor density. S2. Excavate the small-section approach tunnel to the planned mileage of the large-section main tunnel to lay the foundation for subsequent expansion work and prepare for subsequent construction; S3. Excavate upward along the planned excavation slope from the pilot tunnel toward the upper step of the main tunnel to form a gradual pilot tunnel. At the same time, a secondary lining construction is carried out on the small-section pilot tunnel. The gradual pilot tunnel is excavated using the mining method. The cross-section of the gradual pilot tunnel continuously changes from the small cross-section of the pilot tunnel to the upper step section of the main tunnel. The gradual pilot tunnel allows the small-section pilot tunnel to smoothly transition to a larger cross-section, while also providing the necessary space for subsequent excavation construction. In order to strengthen the newly excavated gradual pilot tunnel, anchor rods and steel frames are used to adopt a support structure for it to provide permanent support. A monitoring system is then installed on the gradual pilot tunnel to monitor the surrounding rock conditions of the gradual pilot tunnel. S4. After the gradual pilot tunnel is excavated to the upper step of the main tunnel, excavation is carried out using the mining method. Horizontal excavation is continued from the upper step of the main tunnel, and the middle step of the main tunnel is excavated on the upper step of the main tunnel after penetration. The upward slope section of the gradual pilot tunnel is excavated in the reverse direction. That is, when the excavation of the upper step of the main tunnel meets the distance specified in the expansion plan, the middle step of the main tunnel and the corresponding gradual pilot tunnel slope of the same height are excavated, so that the upper step of the main tunnel and the middle step of the main tunnel maintain the set excavation step distance; S5. As the middle step of the main tunnel continues to be excavated horizontally forward, the lower step of the main tunnel is excavated on the middle step of the main tunnel after it is penetrated, and the downslope section of the gradually changing pilot tunnel slope is excavated in the opposite direction. That is, when the excavation of the middle step of the main tunnel meets the distance specified in the expansion plan, the lower step of the main tunnel and its corresponding gradually changing pilot tunnel slope of the same height are excavated, so that the middle step of the main tunnel and the lower step of the main tunnel maintain the set excavation step distance, and the small-section pilot tunnel is continuously excavated into a large-section main tunnel, and the tunnel is excavated through; S6. Implement the tunnel invert filling to form the foundation pavement. Pour the filling material evenly into the formwork after vibration, ensuring that there are no gaps or uneven areas. Curing is carried out to ensure the strength and stability of the material. Then, secondary lining is carried out to complete the cross-section gradient construction.
[0022] During the excavation of the pilot tunnel, transitional pilot tunnel, and main tunnel in steps S2-S5, the surrounding rock in front of the excavation face is reinforced with advanced small conduits. The surrounding rock is reinforced through grouting of the advanced small conduits. The advanced small conduit support is used in conjunction with a steel frame, with the ends of the small conduits welded to the I-beam frame. Furthermore, the application of advanced small conduits ensures the stability of the excavation.
[0023] In step S3, during the process of digging the gradual guide tunnel, as shown in the attached Figure 5 、 6 As shown, an infrared light guide 8 is used to guide the gradually changing cross-section with infrared light. The infrared light guide 8 includes a support frame 81, an equipment frame 82 that can be rotated and locked about a third axis X3 on the support frame 81, and four infrared light lamps 83 on the upper, lower, left, and right sides of the equipment frame 82, which are respectively pivoted about a first axis X1. The axis centerlines of the first axis X1 of the upper and lower lamps extend in the left-right direction, and the axis centerlines of the first axis X1 of the left and right lamps extend in the up-down direction. An angle locking mechanism 84 is provided between each infrared light lamp 83 and the equipment frame 82. The axis centerline of the third axis X3 extends in the left-right direction.
[0024] The support frame 81 includes a main frame 811 that can be raised and lowered, and a plurality of adjustment legs 812 fixed on the main frame 811 and spreading downward and outward. The lower end of the main frame 811 has a downward-arched arc chassis, and the lower ends of the adjustment legs 812 respectively have spherical supports. The bottom of the main frame 811 has a spirit level. By adjusting the length of the adjustment legs 812 respectively, the main frame 811 can be made vertical to adapt to the uneven ground of the diversion tunnel during excavation.
[0025] As attached Figure 6 As shown, the infrared light lamp 83 includes a lamp housing, a plurality of infrared light sources 831 arranged side by side in the lamp housing facing the same direction, a spherical collimating lens installed in front of each infrared light source 831, a cylindrical lens and a slit aperture arranged in sequence in front of the spherical collimating lens, and an anti-reflection protective window fixedly covered on the front of the lamp housing.
[0026] Each angle locking mechanism 84 is used to lock the angle of the corresponding infrared light 83 after rotating around the first axis. In this embodiment, as shown in the attached Figure 6As shown, each angle locking mechanism 84 includes an adjustment screw 841 connected to the side wall of the device frame 82, which rotates about the second axis X2, and a slide plate 842 fixed to the infrared light 83. The slide plate 842 has a slide groove, into which the adjustment screw is inserted, and the adjustment screw 841 has a positioning nut. The slide plate 842 rotates around the first axis X1 to the desired position and is then clamped and positioned on the adjustment screw 841 by two positioning nuts. This angle locking mechanism 84 is adjusted and locked according to the groove pattern, achieving accurate angle adjustment within a certain angle range. Other locking mechanisms can also be used. In theory, any structure that can lock two rotating parts can be applied.
[0027] During use, the infrared light guide instrument 8 is placed in front of the pilot tunnel, and the level and height are adjusted. The angle of the equipment frame 82 is reset to zero and placed horizontally. The adjustment angle of the four infrared light lamps 83 relative to the equipment frame is reset to zero. According to the planned gradient excavation slope of the upper, lower, left, and right sides of the pilot tunnel between the small section of the pilot tunnel and the upper step section of the main tunnel, the infrared light guide instrument 8 is rotated 15° upward around the third axis X3 and locked in place. The left lamp in the infrared light guide instrument 8 is adjusted and locked so that its light is emitted in a direction of 15° to the left, and the right lamp in the infrared light guide instrument 8 is adjusted and locked so that its light is emitted in a direction of 15° to the right. When the four infrared light lamps are turned on, the infrared light emitted is projected onto the excavation section in front, forming four infrared light spots, which serve as excavation guidance. Workers carry out excavation construction within the range framed by the four infrared light spots.
[0028] A monitoring system is installed in the gradual guide tunnel. The monitoring system includes displacement sensors and stress sensors. Displacement sensors are installed on the top and side walls of the gradual guide tunnel every 5-8 meters, and stress sensors are installed on steel frames and anchor rods to monitor the stress conditions of the surrounding rock deformation support structure in real time. The data of the displacement sensors and stress sensors are transmitted to the control center in real time through a wireless transmission system. The control center analyzes the data and dynamically adjusts the support parameters of the support structure according to the monitoring data, and notifies the staff in real time to add steel frames and anchor rods according to the set specifications and forms, steel frame spacing, and anchor rod density to ensure construction safety and efficiency.
[0029] In summary, the present invention provides a technical solution for a continuous, gradual tunnel construction method for expanding a small cross-section to a larger one: The present invention achieves a smooth transition to a larger cross-section by directly expanding the pilot tunnel upward to form a main tunnel upper step. The gradual pilot tunnel formed by the expansion is then subjected to primary support and secondary lining to form permanent support. After the main tunnel upper step formed by the gradual pilot tunnel expansion is advanced, middle and lower steps are excavated to achieve tunnel expansion from the pilot tunnel to the main tunnel. A small, advanced guide tube is applied to ensure the stability of the gradual pilot tunnel.
[0030] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made in accordance with the spirit of the present invention are intended to be covered by the scope of protection of the present invention.
Claims
1. A method for constructing a continuous and gradual tunnel from a small cross-section to a large cross-section, characterized in that: The following steps are involved: S1. Design a detailed excavation plan from the small-section pilot tunnel to the upper step of the large-section main tunnel. The excavation plan includes the excavation range, the excavation slope within the range of 8° to 30°, the distance from the pilot tunnel to the main tunnel, and the intermediate geological conditions. Prepare and configure corresponding gradient pilot tunnel support measures. S2. Excavate the small-section approach tunnel to the planned mileage of the large-section main tunnel; S3. Excavate upward along the planned excavation slope from the pilot tunnel toward the upper step of the main tunnel to form a gradual pilot tunnel. The cross section of the gradual pilot tunnel changes continuously from the small cross section of the pilot tunnel to the upper step section of the main tunnel. S4. After the gradual pilot tunnel is excavated to the upper step of the main tunnel, continue to excavate horizontally from the upper step of the main tunnel, and excavate the middle step of the main tunnel on the upper step of the main tunnel after it is penetrated, and then excavate the upper slope section of the gradual pilot tunnel in the reverse direction; S5. As the horizontal excavation of the middle step of the main tunnel continues, the lower step of the main tunnel is excavated on the middle step of the main tunnel after it is penetrated. In the reverse direction, the gradually changing downslope section of the pilot tunnel is excavated horizontally. The small-section pilot tunnel is continuously expanded into a large-section main tunnel, and the tunnel is excavated through. S6. Implement the tunnel's invert filling and secondary lining to complete the section gradient construction.
2. The method for constructing a tunnel with a continuous gradual change from a small cross-section to a large cross-section according to claim 1, characterized in that: It also includes steps S2-S5, in which, during the excavation process, the surrounding rock in front of the excavation face is reinforced and supported by advanced small conduits. The surrounding rock is reinforced by grouting with advanced small conduits. The advanced small conduit support is used in conjunction with the steel frame, and the end of the small conduit is welded to the I-beam frame into one.
3. The method for constructing a tunnel with a continuous gradual change from a small cross-section to a large cross-section according to claim 1, characterized in that: In step S1, the excavation expansion plan also includes setting support parameters for the gradual pilot tunnel support structure according to the surrounding rock conditions. The support parameters include the specifications and forms of the steel frame and anchor rods, the steel frame spacing, and the anchor rod density.
4. The method for constructing a tunnel with a continuous gradual change from a small cross-section to a large cross-section according to claim 1, characterized in that: In step S3, a support structure including anchor rods and steel frames is adopted for permanent support of the gradual guide tunnel under construction according to the surrounding rock conditions.
5. The method for constructing a tunnel with a continuous gradual change from a small cross-section to a large cross-section according to claim 1, characterized in that: In step S3, during the construction of the gradual guide tunnel, secondary lining construction is performed on the small-section guide tunnel.
6. The method for constructing a tunnel with a continuous gradual change from a small cross-section to a large cross-section according to claim 1, characterized in that: In step S3 and step S4, the excavation of the gradual guide tunnel and the excavation of the upper steps of the main tunnel are respectively carried out using the mining method.
7. The method for constructing a tunnel with a continuous gradual change from a small cross-section to a large cross-section according to claim 1, characterized in that: In the step S4, when the excavation of the upper step of the main tunnel is advanced to meet the distance specified in the expansion plan, the middle step of the main tunnel and the corresponding gradient guide tunnel slope of the same height are excavated, so that the upper step of the main tunnel and the middle step of the main tunnel maintain the set excavation step distance. In the step S5, when the excavation of the middle step of the main tunnel is advanced to meet the distance specified in the expansion plan, the lower step of the main tunnel and the corresponding gradient guide tunnel slope of the same height are excavated, so that the middle step of the main tunnel and the lower step of the main tunnel maintain the set excavation step distance.
8. The method for constructing a tunnel with a continuous gradual change from a small cross-section to a large cross-section according to claim 1, characterized in that: In step S6, an inverted arch filling construction is performed to form a foundation road surface. The filling material is evenly poured into the formwork after vibration to ensure that there are no gaps and uneven areas. The pouring is then cured to ensure the strength and stability of the material.
9. The method for constructing a tunnel with a continuous gradual change from a small cross-section to a large cross-section according to claim 1, characterized in that: In the step S3, during the process of expanding the gradual guide tunnel, an infrared light guide instrument (8) is used to guide the gradual section with infrared light. The infrared light guide instrument (8) includes a support frame (81), an equipment frame (82) arranged on the support frame (81), and infrared light lamps (83) arranged on the four walls of the equipment frame (82) around pivots. An angle locking mechanism (84) is provided between each infrared light lamp (83) and the equipment frame (82). The infrared light lamp (83) includes a lamp housing, a plurality of infrared light sources (831) arranged side by side in the lamp housing, a spherical collimating lens installed in front of each infrared light source, a cylindrical lens arranged outside the spherical collimating lens, a slit diaphragm, and an anti-reflection protection window fixed on the lamp housing. When in use, by adjusting the angle of each infrared light lamp (83), the infrared rays emitted by the four infrared light lamps are projected onto the excavation section to form a light spot guidance.
10. The method for constructing a tunnel with a continuous gradual change from a small cross-section to a large cross-section according to claim 1, characterized in that: In step S3, the gradual guide tunnel is provided with a monitoring system, which includes displacement sensors and / or stress sensors. The displacement sensors are installed on the top and side walls of the gradual guide tunnel, and the stress sensors are installed on the steel frames and anchor rods. The system monitors the stress conditions of the surrounding rock deformation support structure in real time and dynamically adjusts the support parameters of the support structure according to the monitoring data. The data of the displacement sensors and / or stress sensors are transmitted to the control center in real time through the wireless transmission system. The control center sends a notification of adjusting the support parameters in real time according to the data analysis results.