A construction method for tunnel ventilation structure

Abstract

The present application discloses a method for constructing a tunnel ventilation structure, wherein during the construction of the main tunnel, a fan is arranged at the entrance of the main tunnel and a forced-in ventilation method is used for ventilation; during the construction of the main tunnel and the vertical shaft, fans are respectively arranged at the entrance of the main tunnel and the entrance of the vertical shaft and a forced-in ventilation method is used for ventilation; and after the vertical shaft and the main tunnel are connected, fans are respectively arranged inside the main tunnel and at the entrance of the vertical shaft and a forced-in ventilation method and a tunnel ventilation method is used for ventilation; that is, different ventilation methods or a combination of multiple ventilation methods are used in different construction stages to meet the ventilation needs of each construction stage, thereby ensuring the smooth progress of normal construction.

Description

Technical Field

[0001] The present application relates to the technical field of tunnel construction, and in particular to a construction method of a tunnel ventilation structure. Background Art

[0002] Tunnels are usually constructed using a "three-tunnel + four-shaft" construction plan. In order to achieve a long tunnel with a short break, additional working faces need to be opened in the left and right tunnels through the central guide tunnel. The ventilation of the newly opened working faces will be transported by the ventilation duct of the central guide tunnel. In order to ensure normal construction and safe operation of construction personnel, the oxygen content in the tunnel air is always maintained above 19.5% during the operation process. Tunnel construction ventilation should be able to provide the minimum air volume required for various operations in the tunnel. Each person should be supplied with 4m of fresh air. 3 / min. When using internal combustion machinery, the air supply volume should not be less than 4.5m 3 / (min.kV). The wind speed should not be less than 0.15m / s when the whole section is excavated, and should not be less than 0.25m / s in the pilot tunnel, but should not be greater than 6m / s.

[0003] However, the existing tunnel main tunnel construction opens up a new auxiliary working face through the middle guide tunnel. During the peak construction period, there are multiple working faces at the entrance, most of which are supplied with air through the middle guide tunnel. There are many construction working faces, and there are many pollution sources such as blasting smoke, internal combustion engine exhaust and vehicle dust in the tunnel. The air quality in the tunnel is poor. At the same time, the workers and construction machinery require a large amount of air during the tunnel construction process. If the ventilation structure is not set reasonably, it will affect the construction environment and construction efficiency. Summary of the invention

[0004] In order to solve the above technical problems, the present application is proposed. The embodiment of the present application provides a construction method of a tunnel ventilation structure, which solves the problem that the ventilation demand is difficult to meet during the above tunnel construction process.

[0005] The present application provides a method for constructing a tunnel ventilation structure, comprising: during the construction of a main tunnel, a fan is arranged at the entrance of the main tunnel and ventilation is performed by a forced-in ventilation method; during the construction of the main tunnel and the vertical shaft, fans are respectively arranged at the entrance of the main tunnel and the entrance of the vertical shaft and ventilation is performed by a forced-in ventilation method; and after the vertical shaft is connected with the main tunnel, fans are respectively arranged inside the main tunnel and at the entrance of the vertical shaft and ventilation is performed by a forced-in ventilation method and a tunnel ventilation method.

[0006] In one embodiment, when the left tunnel and the right tunnel of the main tunnel are constructed using one working face respectively, the fan is set at the entrance of the main tunnel and ventilation is performed by forced ventilation, including: a first fan is set at the entrance of the left tunnel to supply the first working face of the left tunnel; a third fan is set at the entrance of the right tunnel to supply the first working face of the right tunnel; and a second fan is set on the left side of the entrance of the service tunnel to supply the working face of the tunnel boring machine.

[0007] In one embodiment, when the left tunnel and the right tunnel of the main tunnel are constructed using multiple working faces respectively, the fan is set at the entrance of the main tunnel and ventilation is performed by forced ventilation, including: a first fan is set at the entrance of the left tunnel to supply the first working face of the left tunnel; a second fan is set on the left side of the entrance of the service tunnel to supply the other working faces of the left tunnel and the tunnel boring machine working face; a third fan is set at the entrance of the right tunnel to supply the first working face of the right tunnel; and a fourth fan is set on the right side of the entrance of the service tunnel to supply the other working faces of the right tunnel.

[0008] In one embodiment, when the left tunnel and the right tunnel of the main tunnel are constructed with multiple working faces respectively, fans are respectively set at the entrance of the main tunnel and the entrance of the vertical shaft and ventilation is performed by forced ventilation, including: a first fan is set at the entrance of the left tunnel to supply the first working face of the left tunnel; a second fan is set on the left side of the entrance of the service tunnel to supply the other working faces of the left tunnel; a third fan is set at the entrance of the right tunnel to supply the first working face of the right tunnel; a fourth fan is set on the right side of the entrance of the service tunnel to supply the other working faces of the right tunnel; and a fifth fan is set at the entrance of the vertical shaft to supply the working face of the tunnel boring machine.

[0009] In one embodiment, fans are respectively arranged inside the main tunnel and at the entrance of the vertical shaft, and ventilation is performed by push-in and tunnel ventilation, including: fans are arranged at the intersection of the main tunnel and the vertical shaft and close to the active entrance side, and the entrance of the main tunnel is used as the main conveying channel for fresh air and the vertical shaft is used as a smoke exhaust channel for ventilation.

[0010] In one embodiment, when the left tunnel and the right tunnel of the main tunnel are constructed with multiple working faces respectively, fans are respectively arranged inside the main tunnel and at the entrance of the shaft, and ventilation is performed by pressure-type and tunnel-type ventilation, including: a first fan is arranged inside the left tunnel to supply the first working face of the left tunnel; a second fan is arranged at the entrance of the shaft to supply the other working faces of the left tunnel and the tunnel boring machine working face; a third fan is arranged inside the right tunnel to supply the first working face of the right tunnel; and a fourth fan is arranged at the entrance of the shaft to supply the other working faces of the right tunnel.

[0011] In one embodiment, when the left tunnel and the right tunnel of the main tunnel are constructed with multiple working faces respectively, fans are respectively arranged inside the main tunnel and at the entrance of the shaft, and ventilation is performed by pressure-type and tunnel-type ventilation, including: a first fan is arranged inside the left tunnel to supply the first working face of the left tunnel; a second fan is arranged at the entrance of the shaft to supply the other working faces of the left tunnel; a third fan is arranged inside the right tunnel to supply the first working face of the right tunnel; a fourth fan is arranged at the entrance of the shaft to supply the other working faces of the right tunnel; and a fifth fan is arranged at the exit of the shaft to supply the working face of the tunnel boring machine.

[0012] In one embodiment, when the left and right holes of the main hole are constructed using one working face respectively, fans are respectively arranged inside the main hole and at the entrance of the shaft and ventilation is performed using push-in and tunnel ventilation methods, including: a first fan is arranged inside the left hole to supply the first working face of the left hole; and a third fan is arranged inside the right hole to supply the first working face of the right hole.

[0013] In one embodiment, arranging a first fan inside the left tunnel to supply a first working surface of the left tunnel includes: arranging a first fan inside the left tunnel 50 meters away from the shaft to supply a first working surface of the left tunnel.

[0014] In one embodiment, arranging a third fan inside the right tunnel to supply the first working surface of the right tunnel includes: arranging a third fan inside the right tunnel 50 meters away from the shaft to supply the first working surface of the right tunnel.

[0015] The construction method of the tunnel ventilation structure provided in the present application is as follows: during the construction of the main tunnel, a fan is set at the entrance of the main tunnel and a forced ventilation method is used for ventilation; during the construction of the main tunnel and the vertical shaft, fans are respectively set at the entrance of the main tunnel and the entrance of the vertical shaft and a forced ventilation method is used for ventilation; and after the vertical shaft and the main tunnel are connected, fans are respectively set inside the main tunnel and at the entrance of the vertical shaft and a forced ventilation method and a tunnel ventilation method are used for ventilation; that is, different ventilation methods or a combination of multiple ventilation methods are used in different construction stages to meet the ventilation needs of each construction stage, thereby ensuring the smooth progress of normal construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] By describing the embodiments of the present application in more detail in conjunction with the accompanying drawings, the above and other purposes, features and advantages of the present application will become more apparent. The accompanying drawings are used to provide a further understanding of the embodiments of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the present application and do not constitute a limitation of the present application. In the accompanying drawings, the same reference numerals generally represent the same parts or steps.

[0017] Figure 1 It is a schematic flow chart of a construction method of a tunnel ventilation structure provided by an exemplary embodiment of the present application.

[0018] Figure 2 It is a schematic diagram of the structure of construction equipment of a tunnel ventilation structure provided by an exemplary embodiment of the present application.

[0019] Figure 3 It is a structural diagram of an electronic device provided by an exemplary embodiment of the present application. DETAILED DESCRIPTION

[0020] Below, the exemplary embodiments according to the present application will be described in detail with reference to the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application, and it should be understood that the present application is not limited to the exemplary embodiments described here.

[0021] In order to achieve a short tunnel, the service tunnel of the tunnel in this application adopts the TBM (tunnel boring machine) method, and the double main tunnels of the tunnel are constructed by drilling and blasting. By taking advantage of the TBM's advance advantage in the service tunnel, an auxiliary working face of the main tunnel is opened at the crosswalk.

[0022] There are many auxiliary caverns in the tunnel, such as the vehicle tunnel, pedestrian tunnel, and communication air duct. Due to the problem of the process, the tunnel is constructed behind the face, which can easily cause damage to the ventilation duct during the tunnel excavation process. In addition, there are many mechanical equipment in the tunnel and the working surface is narrow. Mechanical equipment can easily cause damage to the ventilation duct when lifting, turning, or reversing.

[0023] The construction of the main tunnel of the tunnel opens up a new auxiliary working face through the middle guide tunnel. The organization of materials such as slag discharge and concrete transportation of the auxiliary working face and the TBM middle guide tunnel is a difficult point in tunnel construction. This application adopts two modes of trackless transportation and belt transportation. During the peak construction period, there are 7 working faces under construction at the same time. At the same time, considering that the air duct in the middle guide tunnel is close to the passing vehicles, the transportation of tunnel materials has a greater interference with tunnel ventilation.

[0024] During peak hours, air is supplied to 2 working faces in the left tunnel, 2 working faces in the right tunnel, and the TBM working face in the middle tunnel through the middle guide tunnel (2 ventilation ducts). This requires the fan to have large power and large air supply volume, and the material requirements for the ventilation duct are relatively high; in order to ensure the air supply volume, the ventilation duct design at the turning point must also be optimized.

[0025] The implementation of this application is described in detail below with reference to the accompanying drawings:

[0026] Figure 1 FIG. 1 is a flow chart of a construction method of a tunnel ventilation structure provided by an exemplary embodiment of the present application. Figure 1 As shown, the construction method of the tunnel ventilation structure includes the following steps:

[0027] Step 110: During the construction of the main tunnel, a fan is installed at the entrance of the main tunnel and ventilation is performed using a push-in ventilation method.

[0028] The construction process of the rectification tunnel can be divided into multiple stages according to the construction time. Since the construction work content in different stages is different, different ventilation structures and ventilation methods can be set for each stage to achieve the best ventilation effect in the corresponding stage.

[0029] Specifically, in the first stage: when the left and right tunnels of the main tunnel are constructed with one working face respectively, the first fan is set at the entrance of the left tunnel to supply the first working face of the left tunnel, and the second fan is set on the left side of the entrance of the service tunnel to supply the tunnel boring machine working face, and the third fan is set at the entrance of the right tunnel to supply the first working face of the right tunnel. And the first fan, the second fan and the third fan all adopt the pressure ventilation method. Three fans are used to ensure the construction needs of the left tunnel, the right tunnel and the tunnel boring machine working face.

[0030] The second stage: When two working faces are used for construction in the left and right tunnels of the main tunnel, the first fan is set at the entrance of the left tunnel to supply the first working face of the left tunnel, the second fan is set on the left side of the entrance of the service tunnel to supply the second working face of the left tunnel and the tunnel boring machine working face, the third fan is set at the entrance of the right tunnel to supply the first working face of the right tunnel, and the fourth fan is set on the right side of the entrance of the service tunnel to supply the second working face of the right tunnel. And the first fan, the second fan, the third fan and the fourth fan all adopt the pressure ventilation method.

[0031] The third stage: When the left and right tunnels of the main tunnel are constructed with three working faces respectively, the first fan is set at the entrance of the left tunnel to supply the first working face of the left tunnel, the second fan is set on the left side of the entrance of the service tunnel to supply the second working face, the third working face and the tunnel boring machine working face of the left tunnel, the third fan is set at the entrance of the right tunnel to supply the first working face of the right tunnel, and the fourth fan is set on the right side of the entrance of the service tunnel to supply the second working face and the third working face of the right tunnel. And the first fan, the second fan, the third fan and the fourth fan all adopt the pressure ventilation method.

[0032] The fourth stage: When the left and right tunnels of the main tunnel are constructed with two working faces respectively, the first fan is set at the entrance of the left tunnel to supply the first working face of the left tunnel, the second fan is set on the left side of the entrance of the service tunnel to supply the second working face of the left tunnel and the tunnel boring machine working face, the third fan is set at the entrance of the right tunnel to supply the first working face of the right tunnel, and the fourth fan is set on the right side of the entrance of the service tunnel to supply the second working face of the right tunnel. And the first fan, the second fan, the third fan and the fourth fan all adopt the pressure ventilation method.

[0033] The fifth stage: When the left and right tunnels of the main tunnel are constructed with three working faces respectively, the first fan is set at the entrance of the left tunnel to supply the first working face of the left tunnel, the second fan is set on the left side of the entrance of the service tunnel to supply the second working face, the third working face and the tunnel boring machine working face of the left tunnel, the third fan is set at the entrance of the right tunnel to supply the first working face of the right tunnel, and the fourth fan is set on the right side of the entrance of the service tunnel to supply the second working face and the third working face of the right tunnel. And the first fan, the second fan, the third fan and the fourth fan all adopt the pressure ventilation method.

[0034] Stage 6: When two working faces are used for construction in the left and right tunnels of the main tunnel, a first fan is set at the entrance of the left tunnel to supply the first working face of the left tunnel, a second fan is set on the left side of the entrance of the service tunnel to supply the second working face of the left tunnel and the tunnel boring machine working face, a third fan is set at the entrance of the right tunnel to supply the first working face of the right tunnel, and a fourth fan is set on the right side of the entrance of the service tunnel to supply the second working face of the right tunnel. And the first fan, the second fan, the third fan and the fourth fan all adopt the pressure ventilation method.

[0035] Stage 7: When three working faces are used for construction in the left and right tunnels of the main tunnel, a first fan is set at the entrance of the left tunnel to supply the first working face of the left tunnel, a second fan is set on the left side of the entrance of the service tunnel to supply the second working face, the third working face and the tunnel boring machine working face of the left tunnel, a third fan is set at the entrance of the right tunnel to supply the first working face of the right tunnel, and a fourth fan is set on the right side of the entrance of the service tunnel to supply the second working face and the third working face of the right tunnel. The first fan, the second fan, the third fan and the fourth fan all adopt a forced-in ventilation method.

[0036] Step 120: During the construction of the main tunnel and the vertical shaft, fans are respectively installed at the entrance of the main tunnel and the entrance of the vertical shaft, and ventilation is performed using a forced ventilation method.

[0037] During the construction of the main tunnel and the vertical shaft (the vertical shaft is not connected to the main tunnel at this time), fans are installed at the entrance of the main tunnel and the entrance of the vertical shaft for ventilation to achieve the best ventilation effect in the corresponding stage.

[0038] Specifically, the eighth stage: when the left and right tunnels of the main tunnel are constructed with three working faces respectively, the first fan is set at the entrance of the left tunnel to supply the first working face of the left tunnel, the second fan is set on the left side of the entrance of the service tunnel to supply the second and third working faces of the left tunnel, the third fan is set at the entrance of the right tunnel to supply the first working face of the right tunnel, the fourth fan is set on the right side of the entrance of the service tunnel to supply the second and third working faces of the right tunnel, and the fifth fan is set at the entrance of the shaft to supply the tunnel boring machine working face. And the first fan, the second fan, the third fan, the fourth fan and the fifth fan all adopt the pressure-in ventilation method.

[0039] Step 130: After the vertical shaft is connected with the main tunnel, fans are respectively installed inside the main tunnel and at the entrance of the vertical shaft, and ventilation is performed using push-in ventilation and tunnel ventilation methods.

[0040] In one embodiment, the specific implementation of step 130 may be: a fan is arranged at the intersection of the main tunnel and the shaft and close to the active entrance side, and the entrance of the main tunnel is used as the main conveying channel for fresh air and the shaft is used as the smoke exhaust channel for ventilation.

[0041] Specifically, the ninth stage: when the left and right tunnels of the main tunnel are constructed with three working faces respectively, a first fan is set inside the left tunnel to supply the first working face of the left tunnel, a second fan is set at the entrance of the shaft to supply the second working face, the third working face and the tunnel boring machine working face of the left tunnel, a third fan is set inside the right tunnel to supply the first working face of the right tunnel, and a fourth fan is set at the entrance of the shaft to supply the second working face and the third working face of the right tunnel. And the first fan, the second fan, the third fan and the fourth fan all adopt a forced-in ventilation method.

[0042] The tenth stage: When the left and right tunnels of the main tunnel are constructed with three working faces respectively, the first fan is set inside the left tunnel to supply the first working face of the left tunnel, the second fan is set at the entrance of the shaft to supply the second and third working faces of the left tunnel, the third fan is set inside the right tunnel to supply the first working face of the right tunnel, the fourth fan is set at the entrance of the shaft to supply the second and third working faces of the right tunnel, and the fifth fan is set at the exit of the shaft to supply the tunnel boring machine working face. And the first fan, the second fan, the third fan, the fourth fan and the fifth fan all adopt the pressure ventilation method.

[0043] Stage 11: When the left and right tunnels of the main tunnel are constructed with three working faces respectively, the first fan is set inside the left tunnel to supply the first working face of the left tunnel, the second fan is set at the entrance of the shaft to supply the second working face, the third working face and the tunnel boring machine working face of the left tunnel, the third fan is set inside the right tunnel to supply the first working face of the right tunnel, and the fourth fan is set at the entrance of the shaft to supply the second working face and the third working face of the right tunnel. And the first fan, the second fan, the third fan and the fourth fan all adopt the pressure-in ventilation method.

[0044] Stage 12: When the left and right tunnels of the main tunnel are constructed using one working surface respectively, a first fan is set inside the left tunnel to supply the first working surface of the left tunnel, and a third fan is set inside the right tunnel to supply the first working surface of the right tunnel.

[0045] In one embodiment, the first fan is arranged inside the left tunnel to supply the first working surface of the left tunnel, specifically: the first fan is arranged inside the left tunnel at a distance of 50 meters from the shaft to supply the first working surface of the left tunnel.

[0046] In one embodiment, a third fan is provided inside the right tunnel to supply the first working surface of the right tunnel, specifically: a third fan is provided inside the right tunnel at a distance of 50 meters from the vertical shaft to supply the first working surface of the right tunnel.

[0047] The construction method of the tunnel ventilation structure provided in the present application is as follows: during the construction of the main tunnel, a fan is set at the entrance of the main tunnel and a forced ventilation method is used for ventilation; during the construction of the main tunnel and the vertical shaft, fans are respectively set at the entrance of the main tunnel and the entrance of the vertical shaft and a forced ventilation method is used for ventilation; and after the vertical shaft and the main tunnel are connected, fans are respectively set inside the main tunnel and at the entrance of the vertical shaft and a forced ventilation method and a tunnel ventilation method are used for ventilation; that is, different ventilation methods or a combination of multiple ventilation methods are used in different construction stages to meet the ventilation needs of each construction stage, thereby ensuring the smooth progress of normal construction.

[0048] In order to meet the ventilation requirements of the construction process, this application calculates the ventilation requirements (such as air volume, etc.) according to the construction environment, and selects the corresponding fan power according to the ventilation requirements, thereby ensuring the normal progress of the construction. The specific air volume calculation method is as follows:

[0049] 1. Calculate the air volume based on the maximum number of people working in the tunnel at the same time:

[0050] Q = k × m × q;

[0051] Among them, k is the air volume reserve coefficient, usually k = 1.1-1.2; this application takes k = 1.2; m is the maximum number of people working in the cave at the same time; q is the amount of fresh air required per person per minute in the cave, usually in m 3 / min calculation; in the tunnel construction of this application, the amount of fresh air supplied per person in the tunnel is 4m 3 / min.

[0052] 2. Calculate the air volume based on the maximum amount of explosives blasted simultaneously:

[0053] (1) Pressurized ventilation

[0054]

[0055] Wherein, A is the amount of explosives to be blasted simultaneously (kg), which is 480kg in this application; S is the cross-sectional area of ​​the tunnel (㎡), which is 110㎡ in this application; L 通风长度 --The ventilation length to be improved after blasting is m; the value for this application is 100m; t--the ventilation time after blasting is min; the value for this application is 30min.

[0056] (2) Hybrid ventilation

[0057]

[0058] Among them, L 入口 --The distance from the air inlet to the working surface is calculated as 25m.

[0059] 3. Calculate the air volume according to the need for dilution of exhaust gas from internal combustion engines:

[0060] Q = q × H × k1 × k2;

[0061] Where H is the total kilowatts of the internal combustion engines used in the tunnel at the same time; q is the air volume required for each kW of internal combustion engines used in the tunnel at the same time, taking 3m 3 / min; k1--internal combustion engine utilization coefficient; k2--internal combustion engine simultaneous working coefficient.

[0062] 4. Calculate according to the minimum allowable wind speed in the cave:

[0063] Q = 60 × v × S;

[0064] Among them, v--minimum allowable wind speed in the tunnel m / s; 0.15m / s when full section is excavated, and 0.25m / s for others; S--cross-sectional area of ​​the tunnel m2, the value taken in this application is 110 m2.

[0065] Below, the air volume requirement in the tunnel construction of this application is specifically calculated:

[0066] 1. The ventilation parameters of the left and right holes are as follows:

[0067] Table 1 Main tunnel ventilation parameters

[0068]

[0069] The calculation result of air volume is:

[0070] Table 2 Main tunnel air volume calculation results

[0071]

[0072]

[0073] Based on the above analysis, the air volume required for main hole drilling and blasting is 1980m 3 / min.

[0074] 2. The ventilation parameters of the service tunnel are as follows:

[0075] Table 3 Ventilation parameters of service tunnel

[0076]

[0077] The calculation result of air volume is:

[0078] Table 4 Service tunnel air volume calculation

[0079]

[0080] Based on the above analysis, the required air volume for excavation of the service tunnel by TBM method is 1500m 3 / min.

[0081] 3. The ventilation parameters of the shaft are as follows:

[0082] Table 5 Shaft ventilation parameters

[0083]

[0084]

[0085] The calculation result of air volume is:

[0086] Table 6 Shaft air volume calculation

[0087]

[0088] Based on the above analysis, the required air volume for vertical shaft drilling and blasting is 855m 3 / min.

[0089] In order to meet the air volume requirements of the main tunnel, service tunnel and shaft in each of the above stages, the parameters of each fan in this application are statistically shown in the following table:

[0090] Table 7 Statistics of maximum air volume, air pressure and power of each fan

[0091] Fan air volume and pressure First fan Second fan The third fan Fourth fan Fifth fan <![CDATA[Air volume (m 3 / min)]]> 4644.35 6511.14 4566.2 4173.96 1938.02 Ventilation resistance (Pa) 5312.41 10638.16 5099.85 8235.64 2052.39 Calculated power(kw) 647.07 1427.85 610.72 613 54.79

[0092] Figure 2 Schematic diagram of the structure of the construction equipment of the tunnel ventilation structure provided by an exemplary embodiment of the present application. Figure 2 As shown, the construction equipment 20 of the tunnel ventilation structure includes: a first ventilation device 21, which is used to set a fan at the entrance of the main tunnel and adopt a forced ventilation method for ventilation during the construction of the main tunnel; a second ventilation device 22, which is used to set a fan at the entrance of the main tunnel and the entrance of the vertical shaft during the construction of the main tunnel and the vertical shaft, and adopt a forced ventilation method for ventilation; a third ventilation device 23, which is used to set a fan inside the main tunnel and at the entrance of the vertical shaft after the vertical shaft is connected with the main tunnel, and adopt forced and lane ventilation methods for ventilation.

[0093] The construction equipment of the tunnel ventilation structure provided in the present application is characterized in that during the construction of the main tunnel, a fan is arranged at the entrance of the main tunnel through the first ventilation device 21, and ventilation is carried out by a forced-in ventilation method; during the construction of the main tunnel and the vertical shaft, a fan is respectively arranged at the entrance of the main tunnel and the entrance of the vertical shaft by the second ventilation device 22, and ventilation is carried out by a forced-in ventilation method; and after the vertical shaft and the main tunnel are connected, a fan is respectively arranged inside the main tunnel and at the entrance of the vertical shaft by the third ventilation device 23, and ventilation is carried out by a forced-in ventilation method and a laneway ventilation method; that is, different ventilation methods or a combination of multiple ventilation methods are adopted in different construction stages to meet the ventilation needs of each construction stage, thereby ensuring the smooth progress of normal construction.

[0094] In one embodiment, the third ventilation device 23 can be further configured as follows: a fan is arranged at the intersection of the main tunnel and the vertical shaft and close to the active entrance side, and ventilation is performed using the entrance of the main tunnel as the main fresh air delivery channel and the vertical shaft as the smoke exhaust channel.

[0095] Below, reference Figure 3 The electronic device according to the embodiment of the present application is described. The electronic device may be any one or both of the first device and the second device, or a stand-alone device independent of them, and the stand-alone device may communicate with the first device and the second device to receive the collected input signal from them.

[0096] Figure 3 A block diagram of an electronic device according to an embodiment of the present application is illustrated.

[0097] like Figure 3 As shown, the electronic device 10 includes one or more processors 11 and a memory 12 .

[0098] The processor 11 may be a central processing unit (CPU) or other forms of processing units having data processing capabilities and / or instruction execution capabilities, and may control other components in the electronic device 10 to perform desired functions.

[0099] The memory 12 may include one or more computer program products, and the computer program product may include various forms of computer-readable storage media, such as volatile memory and / or non-volatile memory. The volatile memory may include, for example, random access memory (RAM) and / or cache memory (cache), etc. The non-volatile memory may include, for example, read-only memory (ROM), hard disk, flash memory, etc. One or more computer program instructions may be stored on the computer-readable storage medium, and the processor 11 may run the program instructions to implement the construction method of the tunnel ventilation structure of each embodiment of the present application described above and / or other desired functions. Various contents such as input signals, signal components, noise components, etc. may also be stored in the computer-readable storage medium.

[0100] In one example, the electronic device 10 may further include: an input device 13 and an output device 14 , and these components are interconnected via a bus system and / or other forms of connection mechanisms (not shown).

[0101] When the electronic device is a stand-alone device, the input device 13 may be a communication network connector, which is used to receive the collected input signals from the first device and the second device.

[0102] In addition, the input device 13 may also include, for example, a keyboard, a mouse, and the like.

[0103] The output device 14 can output various information to the outside, including the determined distance information, direction information, etc. The output device 14 can include, for example, a display, a speaker, a printer, a communication network and a remote output device connected thereto, and the like.

[0104] Of course, to simplify, Figure 3 Only some of the components related to the present application in the electronic device 10 are shown, and components such as a bus, an input / output interface, etc. are omitted. In addition, according to specific application situations, the electronic device 10 may also include any other appropriate components.

[0105] The computer program product may be written in any combination of one or more programming languages ​​to write program codes for performing the operations of the embodiments of the present application, including object-oriented programming languages, such as Java, C++, etc., and conventional procedural programming languages, such as "C" language or similar programming languages. The program code may be executed entirely on the user computing device, partially on the user device, as an independent software package, partially on the user computing device and partially on a remote computing device, or entirely on a remote computing device or server.

[0106] The computer readable storage medium can adopt any combination of one or more readable media. The readable medium can be a readable signal medium or a readable storage medium. The readable storage medium can include, for example, but is not limited to, a system, device or device of electricity, magnetism, light, electromagnetic, infrared, or semiconductor, or any combination of the above. More specific examples (non-exhaustive list) of readable storage media include: an electrical connection with one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0107] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

Claims

1. A construction method for a tunnel ventilation structure, characterized in that: include: During the construction of the main tunnel, a fan is arranged at the entrance of the main tunnel and ventilation is performed by a forced-in ventilation method; During the construction of the main tunnel and the vertical shaft, fans are respectively installed at the entrance of the main tunnel and the entrance of the vertical shaft, and ventilation is performed by a forced ventilation method; as well as After the vertical shaft is connected with the main tunnel, fans are respectively arranged inside the main tunnel and at the entrance of the vertical shaft, and ventilation is performed by pressure-in ventilation and tunnel-type ventilation; Wherein, when the left tunnel and the right tunnel of the main tunnel are constructed by multiple working faces respectively, the fans are respectively arranged inside the main tunnel and at the entrance of the shaft and ventilation is performed by pressure-type and lane-type ventilation, including: A fan is arranged at the intersection of the main tunnel and the vertical shaft and close to the entrance of the main tunnel, and ventilation is performed by using the entrance of the main tunnel as the main conveying channel for fresh air and the vertical shaft as the smoke exhaust channel; A first fan is arranged inside the left hole to supply the first working surface of the left hole; A second fan is arranged at the entrance of the shaft to supply other working surfaces of the left tunnel; A third fan is arranged inside the right hole to supply the first working surface of the right hole; A fourth fan is arranged at the entrance of the shaft to supply other working faces of the right tunnel; and A fifth fan is arranged at the outlet of the shaft to supply the working face of the tunnel boring machine; Wherein, the first fan is arranged inside the left hole to supply the first working surface of the left hole, including: A first fan is arranged inside the left tunnel at a distance of 50 meters from the shaft to supply the first working surface of the left tunnel; Wherein, the third fan is arranged inside the right hole to supply the first working surface of the right hole, including: A third fan is arranged inside the right tunnel at a distance of 50 meters from the vertical shaft to supply the first working face of the right tunnel.

Images