Road open-cut assembly type tunnel transverse channel structure and construction method thereof

Abstract

The invention discloses a road open-cut assembly type tunnel transverse channel structure, and belongs to the technical field of tunnel construction, the road open-cut assembly type tunnel transverse channel structure comprises a transverse channel transversely connected between a left line channel and a right line channel, the top of the transverse channel is provided with a smoke exhaust channel communicating with the left line channel and the right line channel, and a smoke exhaust pipe is installed in the smoke exhaust channel; a plurality of filter plate sets are installed in the smoke exhaust pipe side by side, each filter plate set comprises two filter plates installed on the inner walls of the two opposite sides of the smoke exhaust pipe respectively, notches are formed between the filter plates and the inner walls of the smoke exhaust pipe, the two filter plates in the same filter plate set are arranged in a staggered mode to form a broken-line-shaped smoke channel, and the smoke exhaust pipe is provided with a branch pipe communicating with the smoke exhaust pipe and the transverse channel. The branch pipes are arranged below the filter plates in a one-to-one correspondence manner, and collecting boxes are detachably mounted in the branch pipes. According to the smoke exhaust device, in the flowing process of smoke in the smoke exhaust pipe, dust in the smoke can be filtered through the filter plate, and the filtered dust falls into the collecting box and is conveniently discharged after being collected.

Description

Technical Field

[0001] The invention belongs to the technical field of tunnel construction, and in particular relates to a highway open-cut assembled tunnel cross-channel structure and a construction method thereof. Background Art

[0002] The tunnel cross passage is a structure that connects two parallel tunnels. During construction, it is excavated from the side of one tunnel to the side of another tunnel, thus forming a tunnel cross passage. The open cut method is a traditional construction method for tunnels and underground projects. Its main steps include: first excavating a foundation pit or trench from the surface to the designed elevation, then carrying out the main structure construction and waterproofing work in the foundation pit, and finally backfilling the earth to restore the ground.

[0003] For long or extra-long tunnels, in the event of a fire or other disaster, a smoke exhaust channel needs to be set up in order to quickly discharge the smoke in the tunnel to the roadway space. For example, the multifunctional cross-channel structure and construction method for tunnels disclosed in the prior art with the announcement number CN 113818901 B reduces the risks during tunnel construction and operation by setting a cross-hole structure of smoke exhaust with equal cross-sections. However, due to the high dust content inside the tunnel, the process of exhausting smoke from the smoke exhaust channel through a fan easily causes dust to accumulate in the smoke exhaust channel or block the fan, thus affecting the exhaust effect.

[0004] Therefore, it is necessary to propose a highway open-cut assembled tunnel cross-passage structure and a construction method thereof to solve the above problems. Summary of the invention

[0005] In view of this, the object of the present invention is to provide a highway open-cut assembled tunnel cross-channel structure and a construction method thereof, which is used to solve the problem in the prior art that the process of discharging smoke from the exhaust duct through a fan easily causes dust to accumulate in the exhaust duct or clog the fan, thereby affecting the exhaust effect.

[0006] In order to achieve the above object, the present invention provides the following technical solutions:

[0007] The present invention provides a cross-channel structure of an open-cut assembled tunnel for a highway, comprising a cross-channel laterally connected between a left-line channel and a right-line channel, a smoke exhaust channel connected to both the left-line channel and the right-line channel is arranged on the top of the cross-channel, a smoke exhaust pipe is installed in the smoke exhaust channel, a plurality of filter plate groups are installed side by side in the smoke exhaust pipe, the filter plate group comprises two filter plates respectively installed on the inner walls of the opposite sides of the smoke exhaust pipe, a notch is provided between the filter plate and the inner wall of the smoke exhaust pipe, two filter plates in the same filter plate group are staggered to form a broken-line smoke channel, a branch pipe connecting the smoke exhaust pipe and the cross-channel is provided on the smoke exhaust pipe, a plurality of branch pipes are arranged one-to-one below the filter plate, and a collection box is detachably installed in the branch pipe.

[0008] Furthermore, the top end of the filter plate is tilted in the opposite direction to the flow direction of the smoke.

[0009] Furthermore, a guide plate is arranged in the collection box, and the guide plate is rotatably connected to the inner wall of the collection box near the filter plate end, and the guide plate is inclined away from the filter plate end in a direction away from the smoke exhaust pipe, and a gap is arranged between the guide plate away from the filter plate end and the inner wall of the collection box.

[0010] Furthermore, locking blocks for fixing the guide plate are slidably mounted on the two opposite side walls in the collection box, and the locking blocks are provided with a bayonet that cooperates with the second end of the guide plate. The bayonet is connected or disconnected from the guide plate to lock or unlock the guide plate.

[0011] Furthermore, two opposite side walls in the collection box are provided with slide grooves, the extension direction of the slide grooves is consistent with the inclination direction of the guide plate, the locking block is slidably installed in the slide grooves, and a spring is fixedly connected between the locking block and the inner wall of the slide groove.

[0012] A construction method for a highway open-cut assembled tunnel cross-passage structure comprises the following steps:

[0013] S1: After the main tunnel excavation is completed, the tunnel prefabricated components of the left-line channel and the right-line channel are set up. The tunnel prefabricated components are prefabricated in one piece. A plurality of tunnel prefabricated components are spliced ​​along the extension direction of the left-line channel or the right-line channel to form the left-line channel or the right-line channel. The tunnel prefabricated components located at the transverse channel are provided with notches that match the transverse channel, and the steel bars in the tunnel prefabricated components are arranged to avoid the notches;

[0014] S2: erecting transverse channel prefabricated components, wherein the transverse channel prefabricated components cooperate with the notch near the notch, and splicing a plurality of transverse channel prefabricated components along the extension direction of the transverse channel to form a transverse channel, wherein the transverse channel prefabricated components are provided with reserved openings corresponding to the branch pipes one by one;

[0015] S3: Install the smoke exhaust pipe so that the branch pipes on the smoke exhaust pipe are respectively inserted into the reserved openings;

[0016] S4: Backfill the earth above the smoke exhaust pipe to the ground to complete the construction of the cross channel structure.

[0017] The beneficial effects of the present invention are:

[0018] The present invention enables dust in the smoke to be filtered out through the filter plate during the flow of smoke in the smoke exhaust pipe, and the filtered dust falls into a collection box for easy collection and discharge, thereby preventing dust from accumulating in the smoke exhaust pipe to affect the smoke exhaust effect or cause fan blockage; and compared with a closed baffle, the filter plate has little effect on the smoke exhaust efficiency because it does not cause a change in the channel area of ​​the smoke exhaust pipe; and the setting of the notch can continue to keep the smoke flowing when the filter plate is blocked.

[0019] Other advantages, objectives and features of the present invention will be described in the following description and will be apparent to those skilled in the art to some extent, or those skilled in the art may be taught from the practice of the present invention. The objectives and other advantages of the present invention may be realized and obtained through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to make the purpose, technical solution and beneficial effects of the present invention clearer, the present invention provides the following drawings for illustration:

[0021] Figure 1 A schematic diagram of a tunnel structure according to an embodiment of the present invention;

[0022] Figure 2 A schematic cross-sectional view of a smoke exhaust pipe according to an embodiment of the present invention;

[0023] Figure 3 This is a schematic diagram of the structure of a collection box according to an embodiment of the present invention;

[0024] Figure 4 This is a schematic diagram of the splicing of tunnel prefabricated components and cross channel prefabricated components according to an embodiment of the present invention.

[0025] The markings in the accompanying drawings are as follows: left-line channel 1, right-line channel 2, transverse channel 3, smoke exhaust pipe 4, filter plate 5, notch 6, branch pipe 7, collection box 8, guide plate 801, slide groove 802, locking block 9, bayonet 901, spring 902. DETAILED DESCRIPTION

[0026] like Figures 1 to 4 As shown, the present invention provides a cross channel structure of an open-cut assembled tunnel for a highway, comprising: a cross channel 3 laterally connected between a left-line channel 1 and a right-line channel 2, a smoke exhaust channel is arranged on the top of the cross channel 3, the smoke exhaust channel is communicated with the left-line channel 1 and the right-line channel 2, a smoke exhaust pipe 4 is installed in the smoke exhaust channel, a plurality of groups of filter plates 5 are installed side by side in the smoke exhaust pipe 4, the filter plate 5 groups include two filter plates 5 respectively installed on the inner walls of the opposite sides of the smoke exhaust pipe 4, a notch 6 is arranged between the filter plate 5 and the inner wall of the smoke exhaust pipe 4, two filter plates 5 in the same group of filter plates 5 are staggered to form a broken line-shaped smoke channel, a branch pipe 7 connecting the smoke exhaust pipe 4 and the cross channel 3 is arranged on the smoke exhaust pipe 4, a plurality of the branch pipes 7 are arranged one by one below the filter plate 5, and a collection box 8 is detachably installed in the branch pipe 7.

[0027] In this solution, fire curtains are provided at the connections between the left-line channel 1, the right-line channel 2 and the horizontal channel 3. When smoke is sucked in by the fan, the smoke passes through the smoke exhaust pipe 4 and the dust in the smoke is filtered by the filter plate 5, so that the dust falls into the collection box 8, and the dust is poured out by disassembling the collection box 8.

[0028] According to the present solution, dust in the smoke can be filtered out through the filter plate 5 during the smoke flow in the smoke exhaust pipe 4, and the filtered dust falls into the collection box 8 for easy collection and discharge, thereby preventing dust from accumulating in the smoke exhaust pipe 4 to affect the smoke exhaust effect or cause fan blockage; and compared with a closed baffle, the filter plate 5 has little effect on the smoke exhaust efficiency because it does not cause a change in the channel area of ​​the smoke exhaust pipe 4; and the setting of the notch 6 can continue to keep the smoke flowing when the filter plate 5 is blocked.

[0029] In one embodiment of the present invention, the top of the filter plate 5 is tilted in the opposite direction of the flue gas flow direction, so that when the flue gas passes through the filter plate 5, dust can fall easily.

[0030] In one embodiment of the present invention, a guide plate 801 is provided on the collection box 8, and the first end of the guide plate 801 is rotatably connected to the inner wall of the collection box 8, and the second end of the guide plate 801 is inclined in a direction away from the smoke exhaust pipe 4, and a gap is provided between the second end of the guide plate 801 and the inner wall of the collection box 8 to facilitate dust to slide along the guide plate 801 and fall into the collection box 8 from the gap.

[0031] In this solution, the dust falling from the filter plate 5 slides through the guide plate 801 and falls into the collection box 8 from the gap to prevent the dust from flowing back from the collection box 8 to the smoke exhaust pipe 4 due to the negative pressure when the fan is exhausting air.

[0032] In one embodiment of the present invention, locking blocks 9 for fixing the guide plate 801 are slidably installed on the two opposite side walls of the collection box 8, and the locking blocks 9 are provided with a bayonet 901 that cooperates with the second end of the guide plate 801. The bayonet 901 is connected or disconnected from the guide plate 801 to lock or unlock the guide plate 801.

[0033] In the present solution, the locking block 9 is U-shaped. When the sliding locking block 9 connects the bayonet 901 with the guide plate 801, the guide plate 801 cannot rotate, so as to fix the guide plate 801 and prevent the negative pressure from causing the guide plate 801 to shake. When the sliding locking block 9 disengages the buckle 901 from the guide plate 801, the guide plate 801 can rotate, so as to open the collection box 8 and pour out the dust inside.

[0034] In one embodiment of the present invention, a slide groove 802 is provided on the opposite side walls of the collection box 8, the extension direction of the slide groove 802 is consistent with the inclination direction of the guide plate 801, the locking block 9 is slidably installed in the slide groove 802, and a spring 902 is fixedly connected between the locking block 9 and the inner wall of the slide groove 802.

[0035] In this solution, a spring 902 is provided to ensure stability of the guide plate 801 in a locked state, thereby preventing the locking block 9 from sliding down in an inclined direction to separate from the guide plate 801 .

[0036] A construction method for a highway open-cut assembled tunnel cross-passage structure comprises the following steps:

[0037] S1: After the main tunnel excavation is completed, Figure 4 , erecting the tunnel prefabricated components 10 of the left lane 1 and the right lane 2, the tunnel prefabricated components 10 are prefabricated in one piece, the tunnel prefabricated components 10 located at the transverse channel 3 are provided with a notch 11 that matches the transverse channel 3, and the steel bars in the tunnel prefabricated components 10 are arranged to avoid the notch 11;

[0038] S2: erecting a transverse channel prefabricated component 12, wherein the transverse channel prefabricated component 12 cooperates with the notch 11, wherein a reserved opening 13 corresponding to each branch pipe 7 is reserved on the transverse channel prefabricated component 12;

[0039] S3: Install the smoke exhaust pipe 4 so that the branch pipes 7 on the smoke exhaust pipe 4 are respectively inserted into the reserved openings;

[0040] S4: Backfill the earth above the smoke exhaust pipe 4 to the ground to complete the construction of the cross channel structure.

[0041] Finally, it should be noted that the above preferred 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 through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. A highway open-cut assembled tunnel transverse passage structure, comprising a transverse passage laterally connected between a left-lane passage and a right-lane passage, characterized in that: A smoke exhaust channel connected to the left-line channel and the right-line channel is arranged on the top of the transverse channel, a smoke exhaust pipe is installed in the smoke exhaust channel, a plurality of filter plate groups are installed side by side in the smoke exhaust pipe, the filter plate group comprises two filter plates respectively installed on the inner walls on opposite sides of the smoke exhaust pipe, a notch is arranged between the filter plate and the inner wall of the smoke exhaust pipe, two filter plates in the same filter plate group are staggered to form a zigzag smoke channel, the smoke exhaust pipe is provided with a branch pipe connecting the smoke exhaust pipe and the transverse channel, a plurality of branch pipes are arranged one by one below the filter plate, a collection box is detachably installed in the branch pipe.

2. The highway open-cut assembled tunnel cross-passage structure according to claim 1 is characterized by: The top end of the filter plate is tilted in the opposite direction to the flow direction of the smoke.

3. The open-cut assembled tunnel cross-passage structure for highway according to claim 1 is characterized by: A guide plate is arranged in the collection box, and the guide plate is rotatably connected to the inner wall of the collection box near the filter plate end. The guide plate is inclined away from the filter plate end in a direction away from the smoke exhaust pipe, and a gap is arranged between the guide plate away from the filter plate end and the inner wall of the collection box.

4. The highway open-cut assembled tunnel cross-passage structure according to claim 1 is characterized by: The two opposite side walls in the collection box are slidably mounted with locking blocks for fixing the guide plate, and the locking blocks are provided with a bayonet that cooperates with the second end of the guide plate. The bayonet is connected or disconnected with the guide plate to lock or unlock the guide plate.

5. The highway open-cut assembled tunnel cross-passage structure according to claim 1 is characterized by: The two opposite side walls in the collection box are both provided with slide grooves, the extension direction of the slide grooves is consistent with the inclination direction of the guide plate, the locking block is slidably installed in the slide groove, and a spring is fixedly connected between the locking block and the inner wall of the slide groove.

6. A construction method for a highway open-cut assembled tunnel cross-passage structure as claimed in any one of claims 1 to 5, characterized in that: The following steps are involved: S1: After the main tunnel excavation is completed, the tunnel prefabricated components of the left-line channel and the right-line channel are set up. The tunnel prefabricated components are prefabricated in one piece. A plurality of tunnel prefabricated components are spliced ​​along the extension direction of the left-line channel or the right-line channel to form the left-line channel or the right-line channel. The tunnel prefabricated components located at the transverse channel are provided with notches that match the transverse channel, and the steel bars in the tunnel prefabricated components are arranged to avoid the notches; S2: erecting transverse channel prefabricated components, wherein the transverse channel prefabricated components cooperate with the notch near the notch, and splicing a plurality of transverse channel prefabricated components along the extension direction of the transverse channel to form a transverse channel, wherein the transverse channel prefabricated components are provided with reserved openings corresponding to the branch pipes one by one; S3: Install the smoke exhaust pipe so that the branch pipes on the smoke exhaust pipe are respectively inserted into the reserved openings; S4: Backfill the earth above the smoke exhaust pipe to the ground to complete the construction of the cross channel structure.

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