Control method for temporary lateral movement of tunnel fans

Abstract

The present invention discloses a cross-sectional structure for temporary transverse movement of a tunnel fan and a control method thereof. The cross-sectional structure comprises a shield section, the shield section is arranged in clearance and has a surplus space on the top, and a movable fan is arranged in the shield section; the control method comprises S1, the length L1 of the inlet ground section of the input tunnel, the length L2 of the open section, the length L3 of the buried section, and the tunnel design vehicle speed V1; S2, the checkpoint records the vehicle speed V2, and the inlet detection equipment records the vehicle type to distinguish whether it is a large vehicle; the inlet detection equipment of the present invention detects whether the vehicle entering the shield section is a large vehicle, and transmits a signal to the signal receiver of the fan, thereby adjusting the position of the fan to facilitate the passage of different vehicles; and the shield section arranged in clearance has a relatively low cost, thereby reducing the cost of the project to a certain extent.

Description

Technical Field

[0001] The invention relates to the technical field of shield tunnels, and in particular to a cross-sectional structure for temporary transverse movement of a tunnel fan and a control method thereof. Background Art

[0002] With the rapid development of cities, the rapid growth of motor vehicle ownership, and the continuous increase in the proportion of residents' car travel, the city's demand for expressways is very urgent. The environmental sensitivity around urban elevated roads is very high, so underground passages are used more and more widely, among which underground roads with the least impact on the overall excavation of shield tunnels are particularly common. In order to meet the requirements of special vehicles and rescue vehicles for tunnel driving height in emergency situations, it is proposed to install movable fans in shield tunnels.

[0003] The shield method can effectively reduce the impact of construction and is widely used in crossing natural barriers such as rivers, railways, green parks, etc.; due to the clearance limit for vehicles, the shield radius increases, and its cost is proportional to the square of the radius. For example, the cost of a 13.0-meter shield is expanded to a 15.3-meter shield, and its economic efficiency is greatly reduced. The clearance has little effect on the cost of a rectangular shield tunnel, and the cost of a 3.2-meter clearance and a 4.5-meter clearance increases by 5%.

[0004] Therefore, technicians in this field are committed to solving the technical contradiction between shield specifications and large-scale passing vehicles. Summary of the invention

[0005] In view of the above-mentioned defects of the prior art, the technical purpose of the present invention is to solve the problem that the fan fixation in the shield tunnel is inconvenient for different vehicles to pass through.

[0006] To achieve the above technical objectives, the present invention provides a cross-sectional structure for temporary transverse movement of a tunnel fan, comprising a shield section, the shield section is arranged in clearance and has a remaining space above, and a movable fan is arranged in the shield section;

[0007] The movable fan at least comprises a fan, a translation track and a signal receiver.

[0008] Preferably, the shield section is a rectangular shield, which is arranged with a clearance of 3.2 meters and a remaining space of 1.3 meters on the top, and after the fan moves, a clearance of 4.5 meters is formed for large vehicles to travel.

[0009] Preferably, the shield section is a circular shield, which is arranged with a clearance of 3.2 meters and a remaining space of 1.1 meters on the top, and after the fan moves, a clearance of 4.3 meters is formed for large vehicles to travel.

[0010] The present invention also provides a method for controlling temporary lateral movement of a tunnel fan, comprising the following steps:

[0011] S1. The length L1 of the inlet ground section of the input tunnel, the length L2 of the open section, the length L3 of the buried section, and the designed vehicle speed V1 of the tunnel;

[0012] S2. The vehicle driving speed V2 recorded by the checkpoint, and the vehicle type is distinguished as a large vehicle by the inlet detection device;

[0013] S3. If the vehicle is a large vehicle, the signal is transmitted to the central processor through the signal transmission of the inlet detection device, calculate the moving time T1 of the fan in the shield section = (L1 + L2 + L3) / V1, calculate the vehicle driving time T2 = (L1 + L2 + L3) / V2, otherwise end the process;

[0014] S4. If T1 < T2, the speed limit and height limit device in the open section rises, and at the same time the fan in the shield section starts to translate;

[0015] S5. When the outlet detection device detects that the entering large vehicle drives out of the tunnel, if there are no new medium-sized or large vehicles entering the lane in the inlet lane, the fan moves back to its original position, otherwise the fan remains stationary, and repeat the above S4 step.

[0016] Advantages of the present invention:

[0017] Due to the above structure and method design of the present invention, the inlet detection device detects whether the vehicle entering the shield section is a large vehicle and emits a signal to the signal receiver of the fan, thereby adjusting the position of the fan to facilitate the passage of different vehicles; moreover, the shield section with a clear span layout has a relatively low construction cost, thus reducing the project cost to a certain extent. Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the position change of the fan when the structure of the present invention is applied to a rectangular shield;

[0019] Figure 2 It is a schematic diagram of the position change of the fan when the structure of the present invention is applied to a circular shield;

[0020] Figure 3 It is a schematic plan layout diagram of the structure of the present invention;

[0021] Figure 4 It is a schematic diagram of the working process of the method of the present invention.

[0022] In the figure: 1 fan, 2 translation track, 3 shield section, 4 inlet detection device, 5 inlet ground section, 6 open section, 7 buried section, 8 speed limit and height limit device, 9 outlet detection device. Detailed Embodiment

[0023] The concept, specific structure, and technical effects of the present invention will be further described below in conjunction with the accompanying drawings to fully understand the purpose, features, and effects of the present invention.

[0024] Embodiment:

[0025] As Figure 1 shown, a cross-sectional structure for the temporary transverse movement of a tunnel fan includes a shield section 3. The shield section 3 is arranged with a clear span and there is remaining space above it. A movable fan is provided inside the shield section 3. The movable fan includes at least a fan 1, a translation track 2, and a signal receiver (not shown in the figure).

[0026] Specifically, the fan 1 can adopt a jet fan.

[0027] Specifically, the shield section 3 is a rectangular shield. The rectangular shield has a clear span of 3.2 meters and there is 1.3 meters of remaining space above it. After the fan 1 moves, a clear span of 4.5 meters is formed for large vehicles to travel.

[0028] Specifically, as Figure 2 shown, the shield section 3 is a circular shield. The circular shield has a clear span of 3.2 meters and there is 1.1 meters of remaining space above it. After the fan 1 moves, a clear span of 4.3 meters is formed for large vehicles to travel.

[0029] As Figure 3 is a schematic plan layout of the structure of the present invention.

[0030] As Figure 4 shown, the present invention also discloses a control method for the above-mentioned cross-sectional structure of the temporary transverse movement of a tunnel fan, including the following steps:

[0031] S1. Input the length L1 of the entrance ground section 5 of the tunnel, the length L2 of the open section, the length L3 of the buried section 7, and the designed vehicle speed V1 of the tunnel;

[0032] S2. The卡口records the vehicle driving speed V2, and the entrance detection device 4 records the vehicle type to distinguish whether it is a large vehicle;

[0033] S3. If the vehicle is a large vehicle, the signal is transmitted to the central processor through the signal transmission of the entrance detection device 4. Calculate the movement time T1 of the fan 1 in the shield section 3 = (L1 + L2 + L3) / V1, and calculate the vehicle driving time T2 = (L1 + L2 + L3) / V2. Otherwise, end the process;

[0034] S4. If T1 < T2, the speed limit and height limit device 8 in the open section 6 rises, and at the same time, the fan 1 in the shield section 3 starts to translate;

[0035] S5. When the exit detection device 9 detects that a large vehicle has entered and exits the tunnel, if there is no new medium-sized or large vehicle entering the entrance lane, the fan 1 moves and resets, otherwise the fan 1 remains stationary and the above step S4 is repeated.

[0036] Working process and principle: An import detection device 4 is set at the exit of the intersection. If the vehicle entering the shield section 3 is a large vehicle, the car entering the shield section 3 is prompted to prohibit driving in the middle lane, and the vehicle speed is recorded. By calculating the distance from the starting point to the shield fan 1, the vehicle's driving time is obtained, and a signal is sent. After receiving the movement signal, the signal receiver at the fan 1 moves to the side so that there is enough safe height space for the large vehicle to pass. When the exit detection device 9 detects that the large vehicle drives out of the shield section 3 and enters the ground road, the shield fan is reset and the middle lane resumes the passage of cars. If a large vehicle enters the shield section 3 during this period, the fan 1 will not be reset.

[0037] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A control method for temporary transverse movement of a tunnel fan, applied to a cross-sectional structure for temporary transverse movement of a tunnel fan, wherein the cross-sectional structure comprises a shield section, wherein the shield section is arranged in a clear space and has a remaining space above, and a movable fan is arranged in the shield section; the movable fan comprises at least a fan, a translation track and a signal receiver; characterized in that: The control method includes the following steps: S1. Input the length L1 of the entrance ground section of the tunnel, the length L2 of the open section, the length L3 of the buried section, and the designed vehicle speed V1 of the tunnel; S2. The speed V2 of the vehicle is recorded at the checkpoint, and the entrance detection device records the vehicle type to distinguish whether it is a large vehicle; S3. If the vehicle is a large vehicle, the signal is transmitted to the central processor through the signal transmission of the entrance detection device, calculate the fan movement time T1 = (L1 + L2 + L3) / V1 in the shield section, calculate the vehicle travel time T2 = (L1 + L2 + L3) / V2, otherwise end the process; S4. If T1 < T2, the speed limit and height limit device in the open section rises, and at the same time the fan in the shield section starts to translate; S5. When the exit detection device detects that the large vehicle entering the tunnel has exited the tunnel, if there are no new medium-sized or large vehicles entering the lane at the entrance, the fan movement is reset, otherwise the fan remains stationary, and repeat the above S4 step.

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