A slagging system in an arch hole

Abstract

The utility model relates to arch bridge construction technical field, concretely relates to a kind of arch seat hole inner slagging-off system, including construction platform, further include slagging-off funnel, and slagging-off funnel is set in the upper of construction platform;Rail, rail is connected with construction platform, and rail includes hole outside section and hole inside section, one end of hole outside section is located in the upper of slagging-off funnel, and the other end of hole outside section extends towards arch seat hole mouth;One end of hole inside section is connected with the end of hole outside section away from slagging-off funnel, and the other end of hole inside section extends to arch seat hole inside;Slagging-off car, slagging-off car includes carriage, and the top of carriage is provided with inlet, and the bottom of carriage is provided with outlet, and outlet is provided with the cover that can open and close;Winch and towrope, winch is connected with construction platform;One end of towrope is connected with winch, and the other end of towrope is connected with slagging-off car.The utility model can overcome the problem that the existing slagging-off method is inefficient and cannot adapt to the arch seat foundation with large inclination angle.

Description

Technical Field

[0001] This utility model relates to the field of arch bridge construction technology, and in particular to a slag removal system inside an arch seat cavity. Background Technology

[0002] When constructing bridge arch foundations, it is necessary to first excavate a pit of the corresponding shape at the predetermined location of the arch foundation, and then pour concrete into the pit to form the arch foundation. Excavation of the arch foundation generates a large amount of slag, so it is necessary to remove the slag from the arch foundation in a timely manner, i.e., to carry out slag removal operations. Currently, slag removal operations generally use dump trucks or muck trucks, but the following problems have been found in practical applications: (1) Existing dump trucks and slag trucks use cargo boxes to load slag and have openings on the top of the cargo box to facilitate receiving slag from the top; however, when it is necessary to unload the slag, an excavator is required to remove the slag from the cargo box one shovel at a time, which is time-consuming and labor-intensive, and will result in additional excavator usage costs.

[0003] (2) As the arch foundation excavation work proceeds, the shape of the pit will gradually match the shape of the arch foundation. Therefore, when the arch is designed with a large inclination angle, the ground of the pit will also have a corresponding angle. However, the existing dump trucks and slag trucks are generally wheeled self-propelled vehicles, and their climbing ability is limited when fully loaded, so they are difficult to adapt to the construction of arch foundations with large inclination angles.

[0004] In summary, existing slag removal methods suffer from low slag removal efficiency and are unable to adapt to arch foundations with large inclination angles. Therefore, there is an urgent need to develop a new slag removal system and corresponding slag removal method. Utility Model Content

[0005] The purpose of this invention is to overcome the problems of low slag removal efficiency and inability to adapt to arch foundations with large inclination angles in existing slag removal methods, and to provide a slag removal system inside the arch foundation.

[0006] In a first aspect, this utility model provides a slag removal system inside an arch-shaped tunnel, including a construction platform, and further comprising: A slag chute is installed above the construction platform. The top of the slag chute has a receiving port, and the bottom of the slag chute has a discharge port. A slag chute hole is provided on the construction platform, and the discharge port is connected to the slag chute hole. The track is connected to the construction platform. The track includes an external section and an internal section. One end of the external section is located above the slag chute, and the other end of the external section extends toward the arch entrance. One end of the internal section is connected to the end of the external section away from the slag chute, and the other end of the internal section extends into the arch entrance. The muck removal car consists of a frame and a carriage. The frame is equipped with wheels at the bottom, and the carriage is connected to the frame. The top of the carriage has a feed inlet, and the bottom of the carriage has a discharge outlet. The discharge outlet is equipped with an openable cover. The muck removal car can travel along the track by means of the wheels. The winch and traction rope are connected; one end of the traction rope is connected to the winch, and the other end is connected to the muck truck.

[0007] In this scheme, during the slag removal operation, the slag removal car can first be moved along the track to the arch seat hole by controlling the hoist's operation. Then, the slag is transferred into the car through the feed inlet on the top of the car. Next, the slag removal car is moved along the track to the top of the slag chute by controlling the hoist's operation. Then, the cover plate at the bottom of the car is opened, and the slag can fall spontaneously from the car's discharge port under the action of gravity. It then enters the slag chute through the receiving port and falls from the bottom of the slag chute and leaves the construction platform.

[0008] As can be seen from the above, this solution has an inlet and an outlet at the top and bottom of the muck truck, respectively, and is equipped with a chute and tracks at both ends leading to the arch cavity and above the chute. After the muck truck collects the excavated slag from the arch cavity, it can be moved above the chute, and then the cover can be opened to unload the slag by gravity. This can greatly improve the efficiency of the unloading operation, reduce the risk of the muck truck overturning, and eliminate the additional design and construction costs of the muck truck tipping mechanism.

[0009] Meanwhile, this solution uses a winch to pull the muck truck along the track. Compared to existing wheeled self-propelled vehicles, this solution's maximum gradient depends on the maximum traction force provided by the winch, rather than being limited by the adhesion between the tires and the ground, thus adapting to the construction of arch foundations with larger inclination angles. Furthermore, this solution places the winch, which powers the muck truck, on the construction platform, preventing falling objects from damaging the winch and causing the muck truck to lose power, become immobile, or even slip and cause a safety accident. Moreover, even if the winch malfunctions, its maintenance and repair are more convenient because it is located on an open construction platform.

[0010] Preferably, it also includes columns, one end of which is connected to the construction platform or the slope inside the arch seat, and the other end of which is connected to the track, with at least two columns spaced apart along the length of the track.

[0011] This solution provides one specific method for setting up the track.

[0012] Preferably, at least one column is provided with a wedge-shaped pad between it and the track. The two sides of the wedge-shaped pad along the height direction abut against the track and the column respectively. The thickness of the wedge-shaped pad gradually increases or decreases along the length direction of the track.

[0013] To achieve the goals of matching the slope of the tunnel section with the inclination angle of the arch seat, ensuring a smooth transition between the tunnel section and the tunnel section, and ensuring that the end of the tunnel section can reach above the slag chute, it is necessary to control the slope at various points on the track. Therefore, this solution sets up wedge-shaped pads between the columns and the track, which can adjust the slope of the track at corresponding positions by adjusting the slope of the wedge-shaped pads themselves and the installation position of the wedge steel plates.

[0014] Preferably, at least two adjacent columns are also connected by diagonal bracing.

[0015] This solution can improve the overall stability of the track.

[0016] Preferably, a number of steering pulleys are spaced apart along the length of the track, and the traction rope passes around the steering pulleys and connects to the slag discharge car.

[0017] The winch has a large self-weight and needs to resist the lateral load transmitted by the traction rope during operation. Therefore, the connection structure between the winch and the construction platform needs to have great strength and rigidity. However, due to the need to pull the muck truck, if a steering pulley is not installed, the winch needs to be set at the end of the track. This can easily cause the winch to be located outside the coverage area of ​​the construction platform, thus requiring the construction platform to be expanded and strengthened, which in turn increases the structural complexity and construction cost of the construction platform.

[0018] Based on the above issues, this solution adds a steering pulley to the winch and traction rope. On the one hand, the steering pulley can precisely control the direction of the traction rope, thereby avoiding the traction rope from rubbing against other structures, such as the arch foundation or track, which could lead to damage to the traction rope. On the other hand, it also means that the winch no longer has to be placed at the end of the track, but can be placed at other locations on the construction platform. By changing the direction of the steering pulley, the traction rope can be connected to the muck truck on the track. This allows workers to more rationally arrange the position of the winch according to the size and stress conditions of the construction platform, thus avoiding the need for additional modifications and reinforcements to the construction platform.

[0019] Preferably, the area of ​​the inlet is smaller than the area of ​​the top of the carriage, and the inlet is located near one end of the carriage along the length of the track; the height of the inlet near the middle of the carriage along the length of the track is higher than the height of the other end of the inlet.

[0020] When the muck truck travels within the inclined arched tunnel, its posture also tilts accordingly, resulting in one end of the truck bed's top opening being higher than the other, making it easy for slag to spill from the lower end. Therefore, this design makes the area of ​​the feed inlet smaller than the area of ​​the truck bed's top, and positions the feed inlet towards one end of the truck bed along the track's length. In other words, in this design, the top of the truck bed is open at one end along the track's length while the other end is closed. When the muck truck travels within the arched tunnel, configuring the closed end of the truck bed's top near the bottom of the slope and the end with the feed inlet near the top of the slope allows the closed top of the truck bed to block slag, thus preventing spillage.

[0021] With one end of the feed inlet higher than the other, it's as if a corner of the car body has been cut off. This allows for an increase in the feed inlet area without reducing the area of ​​the enclosed portion of the car body's top surface, thus improving the efficiency of slag loading operations.

[0022] Preferably, the height of the end of the outer section away from the arch entrance is higher than the height of the other end of the outer section.

[0023] This design places the outer section of the tunnel higher at one end and lower at the other along the track length. On the one hand, this reduces the height difference between the outer and inner sections near the arch entrance, facilitating a smooth transition between them and preventing interference between the connection point and the bottom of the muck car. On the other hand, it also allows the muck car to move spontaneously into the arch under gravity, eliminating the need for the winch to actively pull the muck car into the arch. Instead, the winch only needs to actively pull the muck car towards the top of the chute, thus reducing the design complexity and manufacturing cost of the traction system.

[0024] Preferably, a slag chute is also provided below the construction platform, with one end of the slag chute connected to the slag chute hole and the other end of the slag chute extending downward along the height direction.

[0025] In construction projects on steep terrains such as mountains and canyons, construction platforms often have a certain height and are supported on the slope by support columns at the bottom. For such construction platforms, if a chute is dug on the platform and the slag is unloaded directly through the chute, the slag will splash in all directions after leaving the chute, which will damage the support columns of the construction platform and negatively affect the structural safety of the construction platform. Therefore, this solution connects a chute pipe below the chute, which can limit the trajectory of the slag to the inside of the chute pipe, thereby preventing the slag from splashing in all directions and damaging the construction platform and its support columns.

[0026] Preferably, the slag chute and the slag chute are detachably connected.

[0027] Preferably, a vehicle-stopping device is also provided at the end of the track away from the arch opening.

[0028] Compared with the prior art, the beneficial effects of this utility model are as follows: This invention provides a slag removal system for arch foundations. By setting inlet and outlet ports at the top and bottom of the slag removal vehicle, and connecting it to a slag chute and tracks leading to the arch foundation and above the slag chute respectively, the system allows the slag removal vehicle to be moved above the slag chute after collecting the excavated slag from the arch foundation. The cover can then be opened to unload the slag using gravity, significantly improving unloading efficiency and reducing operating costs. Furthermore, this invention uses a winch to pull the slag removal vehicle along the tracks. Compared to existing wheeled self-propelled vehicles, the maximum gradient of this invention depends on the maximum traction force provided by the winch, rather than being limited by the adhesion between the tires and the ground, thus enabling it to adapt to the construction of arch foundations with larger inclination angles. Attached Figure Description

[0029] Figure 1 This is a side view of the slag removal system inside the arch seat tunnel according to the present invention. Figure 2 This is a partially enlarged side view of the slag removal system inside the arch seat tunnel according to this utility model. Figure 3 This is a three-dimensional structural diagram of a slag removal vehicle for a slag removal system inside an arched tunnel according to this utility model. Figure 4 This is a three-dimensional structural diagram of the muck removal car of the muck removal system in the arch seat tunnel of this utility model, in the hidden car body state. Figure 5 This is a three-dimensional structural diagram of the cover plate of the slag discharge vehicle of the slag discharge system in the arch seat tunnel according to this utility model. Figure 6 This is a side view of the slag removal vehicle of the slag removal system in the arch seat tunnel according to this utility model. Figure 7 This is a side sectional view of the slag removal vehicle at the first telescopic rod of a slag removal system in an arched tunnel according to this utility model. Figure 8 This is a side sectional view of the slag removal vehicle at the locking pin of a slag removal system in an arched tunnel according to this utility model. Figure 9 yes Figure 8 A magnified schematic diagram of the partial structure at point A in the middle; Figure 10 This is a side sectional view of the slag removal vehicle of the arch seat tunnel slag removal system of this utility model in the state of loading slag material. Figure 11 This is a schematic diagram of the zoning of the arch abutment excavation area in Example 1. Figure 1 ; Figure 12 This is a schematic diagram of the zoning of the arch abutment excavation area in Example 1. Figure 2 ; Figure 13 This is a schematic diagram of the arch abutment excavation method in Example 1. Figure 1 ; Figure 14 This is a schematic diagram of the arch abutment excavation method in Example 1. Figure 2 ; Figure 15 This is a schematic diagram of the arch abutment excavation method in Example 1. Figure 3 ; Figure 16 This is a schematic diagram of the arch abutment excavation method in Example 1. Figure 4 ; Figure 17 This is a schematic diagram of the arch abutment excavation method in Example 1. Figure 5 ; Figure 18 This is a schematic diagram of the arch abutment excavation method in Example 1. Figure 6 ; icon: 100 - Construction platform; 110 - Slag chute; 200 - Slag chute funnel; 300 - Track; 301 - External section of tunnel; 302 - Internal section of tunnel; 310 - Column; 320 - Diagonal brace; 330 - Support beam; 400 - Slag removal car; 410 - Car frame; 411 - Traveling wheel; 412 - Mounting frame; 413 - Traction connection point; 414 - Pump station; 420 - Car body; 421 - Top sealing plate; 430 - Cover plate; 431 - Ear plate; 432 - Limiting plate; 4321 - Locking hole; 433 - Strip hole; 434 - Hinge shaft; 440 - First telescopic rod; 450 - Second telescopic rod; 451 - Locking pin; 500 - Winch; 510 - Traction rope; 520 - Steering pulley; 600-Arch base; 601-Upper excavation area; 602-Passage area; 6021-Unexcavated part; 603-Support area; 6031-Triangular support wall; 604-Arch frame; 6041-Arch leg; 700-Slag material. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to specific embodiments. However, it should not be construed as limiting the scope of the present invention to the following embodiments; all technologies implemented based on the content of the present invention fall within the scope of the present invention.

[0031] Unless otherwise specified, the use of terms such as "upper," "lower," "left," "right," "center," "inner," and "outer" to indicate orientation or positional relationships in the description of specific embodiments of this utility model is based on the orientation or positional relationships shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product / equipment / device is typically placed during use. These terms are merely for the purpose of facilitating the description of the utility model solution or simplifying the description in specific embodiments, enabling those skilled in the art to quickly understand the solution, and do not indicate or imply that a specific device / component / element must have a specific orientation, or be constructed and operated in a specific positional relationship. Therefore, they should not be construed as limitations on this utility model.

[0032] Furthermore, the use of terms such as "horizontal," "vertical," "suspended," and "parallel" does not imply that the corresponding device / component / element must be absolutely horizontal, vertical, suspended, or parallel, but rather that it can be slightly tilted or have a deviation. For example, "horizontal" merely means that its direction is more horizontal relative to "vertical," not that the structure must be completely horizontal, but can be slightly tilted. Alternatively, it can be simplified to mean that the corresponding device / component / element, when set in a "horizontal," "vertical," "suspended," or "parallel" direction, can have an error / deviation of ±10% relative to the corresponding direction, more preferably within ±8%, more preferably within ±6%, more preferably within ±5%, and more preferably within ±4%. As long as the corresponding device / component / element is within the error / deviation range, it can still achieve its function in the present invention.

[0033] Furthermore, the use of terms such as "first," "second," and "third" in terminology is merely for distinguishing descriptions of identical or similar components and should not be interpreted as emphasizing or implying the relative importance of a particular component.

[0034] Furthermore, in the description of the embodiments of this utility model, "several", "multiple", and "several" represent at least two. The number can be any number, such as two, three, four, five, six, seven, eight, or nine, and can even exceed nine.

[0035] Furthermore, in the description of the technical solution of this utility model, unless otherwise explicitly specified / limited / restricted, the terms "set up," "install," "connect," "link," "equipped with," "laid out," and "arranged" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to common connection methods in the art, such as welding, riveting, bolting, and threaded connections. Such connections can be mechanical, electrical, or communication connections; they can be direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components.

[0036] Example 1 like Figures 1 to 18 As shown, a muck removal system inside an arch abutment 600 includes a construction platform 100, a muck chute 200, a track 300, a muck removal vehicle 400, a winch 500, and a traction rope 510. The muck chute 200 is positioned above the construction platform 100, with a receiving port at the top and a discharge port at the bottom. A muck chute is provided on the construction platform 100, and the discharge port communicates with the muck chute. The track 300 is connected to the construction platform 100 and includes an external section 301 and an internal section 302. One end of the external section 301 is located above the muck chute 200, and the other end extends toward the opening of the arch abutment 600. The internal section 302... 2 One end is connected to the end of the external section 301 away from the slag chute 200, and the other end of the internal section 302 extends into the arch seat 600; the slag removal car 400 includes a frame 410 and a car body 420. The bottom of the frame 410 is provided with a traveling wheel 411, the car body 420 is connected to the frame 410, the top of the car body 420 is provided with a feed inlet, the bottom of the car body 420 is provided with a discharge outlet, and the discharge outlet is provided with an openable cover plate 430; the slag removal car 400 can travel along the track 300 by traveling wheel 411; the winch 500 is connected to the construction platform 100; one end of the traction rope 510 is connected to the winch 500, and the other end of the traction rope 510 is connected to the slag removal car 400.

[0037] exist Figures 1 to 2 ,as well as Figures 6 to 18 Arrows are also used to indicate the various directions in this embodiment, where the X-axis is parallel to the height direction of the cross-section of the arch 600; the Y-axis and U-axis are both parallel to the horizontal direction, with the Y-axis parallel to the width direction of the cross-section of the arch 600 and the U-axis perpendicular to the Y-axis; the Z-axis is parallel to the length direction of the arch 600; and the W-axis is parallel to the direction of the plumb bob. It should be noted that... Figure 8 In order to facilitate the distinction between the inner walls of the arch frame 604 and the arch seat 600, the distance between the inner walls of the arch frame 604 and the arch seat 600 has been artificially increased. This does not mean that the inner walls of the arch frame and the arch seat 600 are separated from each other. The unexcavated part 6021 of the passage area 602 and the support area 603 use different profile lines only to distinguish the unexcavated part 6021 and the support area 603, but they are essentially both unexcavated rock masses.

[0038] In an optional embodiment, at least two columns 310 are provided below both the outer section 301 and the inner section 302 of the track 300, and the columns 310 are spaced apart along the length of the track 300; the end of the column 310 in the outer section 301 away from the outer section 301 is connected to the construction platform 100, and the end of the column 310 in the inner section 302 away from the inner section 302 is connected to the inner slope of the arch seat 600; the specific structural form of the column 310 includes, but is not limited to, steel pipe column, concrete column or steel-concrete structure column.

[0039] In the above embodiment, the end of the column 310 of the tunnel section 302 that is away from the tunnel section 302 is inserted into the rock strata of the tunnel slope of the arch seat 600 by at least 50cm.

[0040] In the above embodiment, at least two columns 310 are spaced apart along the width direction of the track 300, and crossbeams can be further connected between two adjacent columns 310 along the width direction of the track 300, thereby further increasing the support effect of the columns 310 on the track 300.

[0041] In the above embodiment, a bottom support beam 330 is provided on the construction platform 100. The bottom support beam 330 is arranged along the length direction of the track 300. The bottom support beam 330 is connected to the construction platform 100 by a plurality of clamps spaced apart along its length direction. Each column 310 located above the construction platform 100 is connected to the top surface of the bottom support beam 330 to transfer the load to the construction platform 100 more evenly.

[0042] In an optional embodiment, at least one column 310 is further provided between the column 300 and the track 300. The two sides of the wedge-shaped pad along the height direction abut against the track 300 and the column 310 respectively. The thickness of the wedge-shaped pad (the dimension along the height direction) gradually increases or decreases along the length of the track 300. The specific position of the wedge-shaped pad depends on the slope adjustment requirements of the track 300. For example, wedge-shaped pads can be provided between each column 310 and the track 300, or pads can be provided only at some key locations, such as the two ends of the external section 301 and the internal section 302 of the tunnel and the corresponding column 310.

[0043] In the above embodiments, the wedge-shaped pad and the column 310, as well as the wedge-shaped pad and the track 300, are fixedly connected, for example, by welding or by threaded connections, thereby ensuring the stability of the connection between the track 300 and the column 310. Alternatively, the position of the wedge-shaped pad along the length of the track 300 can be adjusted. For example, multiple mounting holes are provided on the column 310 along the length of the track 300 for the wedge-shaped pad, and the position of the wedge-shaped pad can be adjusted by connecting it to different mounting holes; or the wedge-shaped pad can be slidably connected to the top of the column 310, with the sliding direction along the length of the track 300, and a jack is provided between the wedge-shaped pad and the column 310. The position of the wedge-shaped pad can be adjusted by the extension and retraction of the jack, thereby enabling real-time changes in the slope of the track 300.

[0044] In an optional embodiment, at least two adjacent columns 310 are further connected by diagonal braces 320. The specific location and parameters of the diagonal braces 320 are determined according to the support requirements of the track 300, and as follows: Figure 2 As shown, two or more diagonal braces 320 can be set between two adjacent columns 310 to form an X-shaped structure.

[0045] In an optional embodiment, a plurality of steering pulleys 520 are spaced apart along the length of the track 300, and the traction rope 510 passes around the steering pulleys 520 and connects to the slag discharge car 400. The specific location of the steering pulleys 520 depends on the tension and steering requirements of the traction rope 510, for example... Figure 1 and Figure 2 As shown, steering pulleys 520 are provided on the side of the tunnel section 301 away from the arch seat 600 opening and on both sides of the arch seat 600 opening along the length of the track 300. The former is used to reverse the direction of the traction rope 510 so that the winch 500 is positioned in the middle of the tunnel section 301, preventing the winch 500 from exceeding the range of the construction platform 100. At the same time, it can also change the direction of the traction rope 510, which originally extends along the length of the track 300, to the horizontal direction, so that the winch 500 is not subjected to the vertical component force but only the horizontal component force, which can reduce the difficulty of the anchoring force analysis and anchoring method design of the winch 500. The latter is used to guide the traction rope 510 to turn with the track 300 at the arch seat 600 opening, preventing the traction rope 510 from directly scraping the arch seat 600 structure at the arch seat 600 opening.

[0046] In an optional embodiment, the height of one end of the track 300 outside the opening 301, away from the arch abutment 600, is higher than the height of the other end of the track 301 outside the opening. That is, as... Figure 1 As shown, the end of the external section 301 near the slag chute 200 is higher, while the end near the arch 600 opening is lower, and the height of the end of the external section 301 near the slag chute 200 is higher than the material inlet of the slag chute 200.

[0047] In optional implementations, such as Figure 2 As shown, the outer section 301 and the inner section 302 are connected by an arc transition section to achieve a smooth transition between the outer section 301 and the inner section 302 as much as possible, and to prevent interference between the connection between the outer section 301 and the inner section 302 and the bottom of the slag removal vehicle 400.

[0048] In an optional implementation, the distance between the end of the tunnel section 302 of the track 300 away from the tunnel section 301 and the end face of the arch 600 opening is greater than or equal to 6m. This is because when the arch 600 is excavated downwards to less than 6m, the existing excavator can directly transfer the slag 700 to the construction platform 100 through its boom. Furthermore, if the arch 600 is not excavated downwards to a sufficient depth, the installation conditions of the tunnel section 302 and the slag removal vehicle 400 cannot be met. Therefore, this solution is mainly for cases where the arch 600 is excavated downwards to a depth greater than or equal to 6m.

[0049] In an optional embodiment, a car-stopping device is also provided at the end of the track 300 away from the opening of the arch seat 600 to prevent the slag car 400 from rushing out from the end of the track 300; the car-stopping device can be a product that has been purchased directly, or a stop block or stop beam can be welded directly to the end of the track 300 as a car-stopping device.

[0050] In optional embodiments, the specific structural form of the track 300 includes, but is not limited to, a single-track track 300 or a double-track track 300. For example... Figure 3 and Figure 4 As shown, in order to facilitate the unloading of slag from the slag discharge car 400, a double track 300 can be used. Correspondingly, the slag discharge car 400 is provided with two rows of traveling wheels 411 along the width direction of the frame 410. The car body 420 is located between the two rows of traveling wheels 411, so that when the cover plate 430 at the bottom of the car body 420 is opened, the slag material 700 can fall between the two tracks 300.

[0051] In an optional embodiment, a slag chute 110 is also provided below the construction platform 100. One end of the slag chute 110 is connected to the slag chute hole, and the other end of the slag chute 110 extends downward toward the ground along the height direction.

[0052] In the above embodiments, the slag chute 110 needs to withstand the impact of the slag material 700 and is therefore prone to wear. Therefore, the slag chute 110 can be detachably connected to the slag chute hole to facilitate the replacement of damaged slag chute 110. Specific forms of detachable connection include, but are not limited to, flange connection, tenon and mortise connection, or snap-fit ​​connection.

[0053] In the above embodiments, the distance between the lower end of the slag chute 110 and the ground is greater than or equal to 2m and less than or equal to 3m. This can prevent the slag material 700 from splashing everywhere due to the bottom of the slag chute 110 being too high, thereby damaging the surrounding equipment and structure. It can also prevent the slag material 700 from not having enough space to spread due to the bottom of the slag chute 110 being too low, thereby causing the bottom of the slag chute 110 to be easily blocked, and also prevent the slag material 700 from not having enough operating space to transfer due to the bottom of the slag chute 110 being too low.

[0054] In an optional embodiment, the projection of the slag chute 200 onto the ground is located at the bottom of the cliff slope, for example... Figure 1 As shown, the slag chute 200 is located between the two steel pipe columns 310 furthest from the arch 600 opening, so that when the slag 700 falls from the bottom of the slag chute 200, the slag 700 can directly reach the bottom of the slope, instead of the slag 700 falling on the slope surface of the cliff and being given horizontal velocity by the slope surface, causing the slag 700 to be splashed around and damage the surrounding equipment and existing structures.

[0055] In optional implementations, such as Figure 1 and Figure 2 As shown, the cross-sectional dimension of the upper end of the slag chute 200 is larger than that of the lower end.

[0056] In an optional embodiment, the area of ​​the inlet of the carriage 420 is smaller than the area of ​​the top of the carriage 420, and the inlet is located near one end of the carriage 420 along the length of the track 300; the height of the inlet near the middle of the carriage 420 along the length of the track 300 is higher than the height of the other end of the inlet.

[0057] In optional implementations, such as Figure 4 As shown, the frame 410 is a frame-shaped steel structure made of square steel splicing, with a hollow middle section, in order to facilitate the subsequent connection of the carriage 420 and maximize the discharge port area of ​​the carriage 420.

[0058] In optional implementations, such as Figures 7 to 8 As shown, the carriage 420 has a box-like structure, but its bottom (lower end along the W-axis) does not have an end plate, thus allowing the entire bottom of the carriage 420 to serve as a discharge port; its top (upper end along the W-axis) only has a top sealing plate 421 on one side along the U-axis, and the length of the top sealing plate 421 along the U-axis is less than the corresponding length of the carriage 420, thus only closing a portion of the top area of ​​the carriage 420, while leaving the other portion open as a feed inlet; and a corner of the carriage 420 is cut off at the end where the feed inlet is located, thus forming a shape where the feed inlet is higher at one end and lower at the other along the U-axis, so that when the carriage 420... Figure 10As shown, when the top sealing plate 421 is tilted due to the terrain, it can block the slag 700 and prevent the slag 700 from falling. The tilt of the inlet itself can offset part of the terrain tilt, so that the inlet is closer to the horizontal than the terrain, which makes it easier for the excavator to dump the slag 700 into it.

[0059] In optional embodiments, the opening and closing method of the cover plate 430 includes, but is not limited to, translational, swinging, or folding. For example, a slide rail, lead screw, or rack with a length arranged along the U-axis can be provided at the discharge port, and a slider can be slidably connected on the slide rail, a lead screw nut can be threadedly connected on the lead screw, or a gear can be meshed on the rack. Then, the cover plate 430 can be fixedly connected to the slider, the cover plate 430 can be fixedly connected to the lead screw nut, or the cover plate 430 can be rotatably connected to the gear.

[0060] In an optional embodiment, the cover plate 430 is pivotally connected to the frame 410, and the axis of the pivotal connection is arranged along the traveling direction of the traveling wheel 411. For example Figure 5 As shown, a number of ear plates 431 are provided at intervals on one side of the cover plate 430, and ear plates 431 are also provided at corresponding positions on the frame 410. The through hole axis on the ear plate 431 is arranged along the U-axis direction, so that when the cover plate 430 and the ear plate 431 of the frame 410 are connected to each other through a rotating shaft, the cover plate 430 can swing around the ear plate 431.

[0061] In the above embodiments, the means of driving the cover plate 430 to swing include, but are not limited to, an electric motor, a hydraulic motor, or a rotary cylinder.

[0062] The above embodiment also includes a first telescopic rod 440, the length of which is perpendicular to the traveling direction of the wheel 411. The two ends of the first telescopic rod 440 are respectively hinged to the frame 410 and the cover plate 430, with the hinge axis arranged along the traveling direction of the wheel 411; for example... Figure 3 and Figure 4 As shown, a mounting bracket 412 is provided on the upper surface of the frame 410, and the mounting bracket 412 extends upward along the height direction; one end of the first telescopic rod 440 is hinged to the mounting bracket 412, and the other end of the first telescopic rod 440 passes through the strip hole 433 on the cover plate 430 and is hinged to the hinge pin 434 in the cover plate 430, so that when the first telescopic rod 440 extends or retracts, the first telescopic rod 440 can drive the cover plate 430 to swing relative to the frame 410.

[0063] In an optional embodiment, the first telescopic rod 440 is located on at least one side of the cover plate 430 along the traveling direction of the traveling wheel 411. For example... Figure 7 As shown, the cover plate 430 is provided with first telescopic rods 440 on both sides along the U-axis direction.

[0064] In an optional embodiment, a locking hole 4321 is provided on the cover plate 430, and the axis of the locking hole 4321 is arranged along the traveling direction of the traveling wheel 411; a locking pin 451 is movably connected on the frame 410, and the axis of the locking pin 451 is arranged along the traveling direction of the traveling wheel 411, and the position of the locking pin 451 along the traveling direction of the traveling wheel 411 is adjustable; when the cover plate 430 is fastened to the discharge port, the axis of the locking pin 451 and the locking hole 4321 can be aligned, and the locking pin 451 can be inserted into or removed from the locking hole 4321.

[0065] In the above embodiment, a limiting plate 432 is provided on the cover plate 430, the normal direction of the limiting plate 432 is arranged along the U-axis direction, and a locking hole 4321 is provided in the limiting plate 432; a corresponding limiting hole is provided at the bottom of the carriage 420, so that when the cover plate 430 is fastened to the discharge port, as Figure 9 As shown, the limiting plate 432 can be inserted into the limiting hole, and the locking pin 451 can be further inserted into the locking hole 4321 to lock the position of the cover plate 430.

[0066] In the above embodiment, the length of the locking hole 4321 along the W-axis is greater than its length along the Y-axis, thereby reducing the control accuracy requirements of the locking pin 451.

[0067] In the above embodiments, the movable connection between the locking pin 451 and the frame 410 can be achieved in a variety of ways. For example, a slide rail, lead screw, or rack with a length arranged along the U-axis can be provided on the frame 410, and a slider can be slidably connected on the slide rail, a lead screw nut can be threaded on the lead screw, or a gear can be meshed on the rack. Then, the locking pin 451 can be fixedly connected to the slider, the locking pin 451 can be fixedly connected to the lead screw nut, or the locking pin 451 can be rotatably connected to the gear.

[0068] In the above embodiment, a second telescopic rod 450 is connected to the frame 410, and the telescopic direction of the second telescopic rod 450 is set along the traveling direction of the traveling wheel 411; the locking pin 451 is connected to the free end of the second telescopic rod 450.

[0069] In optional embodiments, the first telescopic rod 440 may be in the form of, but is not limited to, an electric telescopic rod, a hydraulic rod, or a pneumatic telescopic rod; similarly, the second telescopic rod 450 may also be in the form of, but is not limited to, an electric telescopic rod, a hydraulic rod, or a pneumatic telescopic rod.

[0070] In the above embodiments, if either the first telescopic rod 440 or the second telescopic rod 450 is a hydraulic rod, then it can be as follows: Figure 3 As shown, a pump station 414 is also provided on the frame 410 for driving the extension and retraction of the hydraulic rod.

[0071] In optional implementations, such as Figure 4As shown, there are two cover plates 430, which are respectively connected to the two sides of the discharge port along the width direction of the frame 410.

[0072] In an optional embodiment, a towing connection point 413 is connected to the frame 410, the towing connection point 413 including a towing ring and / or a towing hook. For example Figure 3 and Figure 4 As shown, a strip steel plate is welded to one end of the frame 410 along the U-axis near the feed port as a traction connection point 413. The strip steel plate has a round hole to facilitate the threading of the traction rope 510.

[0073] In an optional embodiment, the traveling wheel 411 has a flange on at least one side along its axial direction to facilitate the traveling wheel 411 to travel stably on the track 300.

[0074] like Figures 10 to 18 As shown, the slag removal system inside the arch seat tunnel in Embodiment 1 can refer to the following steps when performing slag removal operations: SA, Install a slag chute 200, a track 300, and a slag removal car 400 on the construction platform 100.

[0075] SB, close the cover plate 430, and use the winch 500 to move the slag truck 400 along the track 300 to the arch seat 600 hole; use the excavator to put the slag material 700 generated by the excavation operation into the truck body 420 from the feed port.

[0076] SC. The slag car 400 is moved along the track 300 by the winch 500 to the top of the receiving port of the slag chute 200, and the cover plate 430 is opened to let the slag 700 fall into the slag chute 200, and then the slag chute leaves the construction platform 100.

[0077] In an optional implementation, in SA, when the distance between the bottom surface of the excavated arch seat 600 pit and the end face of the arch seat 600 opening is greater than or equal to 6m, the inner section 302 of the track 300 is then installed inside the arch seat 600.

[0078] In an optional implementation, the following steps are also included: A1. Calculate the ratio E between the slag removal time of a single cycle at the arch support and the construction time of a single cycle at the arch support, according to the following formula: E=(a×roundup(B / b)) / C In the formula, a represents the single muck removal time, which can be taken as min; B represents the single cycle excavation volume, which can be taken as m^3; b represents the single muck removal volume of the muck truck 400, which can be taken as m^3; C represents the single cycle construction time of the arch seat 600, which can be taken as min; and roundup represents the round-up function.

[0079] A2. Determine whether E is less than the predetermined threshold. If yes, continue construction. If no, adjust the speed of winch 500 or improve the specifications of winch 500 until E is less than the predetermined threshold.

[0080] It should be noted that A1~A2 and SA~SC are not ordered. For example, A1~A2 can be executed before SA~SC to verify in advance whether the operation rhythm of the slag removal operation and the excavation operation are matched; or A1~A2 can be executed simultaneously with SA~SC to judge in real time whether the operation rhythm of the slag removal operation and the excavation operation are matched based on the actual construction situation.

[0081] In the above implementation, the predetermined threshold in A2 can be 0.1.

[0082] In an optional implementation, the excavation operation in SB includes the following steps: S1. Divide the arch seat 600 into an upper excavation area 601 and a lower excavation area along the first direction; the first direction is parallel to the height direction of the arch seat 600 cross-section. Divide the lower excavation area into a passage area 602 and two support areas 603 located on both sides of the passage area 602 along the second direction; the second direction is parallel to the width direction of the arch seat 600 cross-section. Divide the support area 603 into several strip segments along the third direction, which is parallel to the length direction of the arch seat 600. Then, divide each strip segment into smaller rhomboid segments along the first direction, and then divide each rhomboid segment into equilateral triangular areas along the plumb line. Figure 12 The triangular region filled with grid profile lines and the inverted triangular region ( Figure 12 (The triangular region in the middle that is not filled with grid profile lines); Let the equilateral triangular region located on the nth layer along the plumb line be the nth-order triangular support wall 6031, n=1, 2, 3...

[0083] S2. Excavate the upper excavation area 601 so that the working face of the upper excavation area 601 is parallel to the XOY plane, and set arch frames 604 at intervals in the upper excavation area 601 along the third direction until the working face of the upper excavation area 601 is advanced along the third direction to be flush with or lower than the bottom surface of the nth triangular support wall 6031.

[0084] S3. Excavate the lower excavation area until the face of the tunnel area 602 is advanced along the plumb line to be flush with the bottom surface of the nth triangular support wall 6031, and form the nth triangular support wall 6031 on both sides of the tunnel area 602; then extend the arch frame 604 to connect with the side of the nth triangular support wall 6031 facing the upper excavation area 601, so that the load of the arch frame 604 can be transferred to the bottom surface of the lower excavation area through the triangular support wall 6031 along the first direction; as the number of cycles increases, the bottom surface of the lower excavation area will gradually be exposed. At this time, the arch leg 6041 in the corresponding area can be extended to connect with the exposed bottom surface of the lower excavation area, thereby directly transferring the load to the bottom surface of the lower excavation area.

[0085] When excavating the lower excavation area in S3, the passage area 602 can be excavated along the plumb line to form a horizontal working face (i.e., the top surface of the unexcavated part 6021), which facilitates the parking and movement of construction equipment. The methods for extending the arch frame 604 in S3 include, but are not limited to: connecting different numbers of arch legs 6041 to one end of the arch frame 604 facing the triangular support wall 6031, thereby changing the length of the arch frame 604 (this extension method will be used as an example in the following descriptions); or directly using an adjustable length arch frame 604 or arch legs 6041. It should be noted that for the support area 603, when forming the first-order triangular support wall 6031, only the passage area 602 needs to be excavated, without excavating the support area 603. The rock mass of the unexcavated support area 603 will naturally form the first-order triangular support wall 6031. However, when n≥2, not only is it necessary to excavate the passage area 602, but also to excavate the (n-1)th-order triangular support wall 6031 and the inverted triangular area below the (n-1)th-order triangular support wall 6031 in order to form (expose) the nth-order triangular support wall 6031.

[0086] S4. Repeat S2 to S3, incrementing the value of n by one each time, until the face of the upper excavation zone 601 advances to the bottom of the arch seat 600 (e.g. Figure 12 At the second elevation position in the middle), the excavation work of the upper excavation area 601 is completed, and jump to S4.

[0087] S5. Repeat S3, incrementing the value of n by one each time, until the face of the tunnel area 602 is advanced to be flush with the bottom surface of the last triangular support wall 6031; excavate the remaining part of the lower excavation area, extend the arch leg 6041 of the arch frame 604 to connect with the bottom surface of the lower excavation area, and complete the excavation operation of the arch seat 600.

[0088] In this embodiment, the arch base 600 is divided into an upper excavation area 601, a passage area 602, and a support area 603, and different excavation methods are adopted for the upper excavation area 601, the passage area 602, and the support area 603 respectively. The face of the upper excavation area 601 advances along the third direction, which can keep the cross-sectional shape and size of the upper excavation area 601 unchanged. Therefore, the shape and size of the arch frame 604 installed in the upper excavation area 601 can also remain uniform. Thus, there is no need to design different excavation plans and arch frame 604 support plans for different cross-sections, thereby improving the excavation efficiency and speed of the upper excavation area 601.

[0089] For the support area 603, this embodiment divides the support area 603 into several levels of triangular support walls 6031, and gradually excavates downwards as the tunnel face 602 advances. On the one hand, this makes the normal direction of the side of the triangular support wall 6031 facing the upper excavation area 601 parallel to the first direction. Thus, when the arch frame 604 is connected to the triangular support wall 6031, the load transfer direction in the arch frame 604 is consistent with the load transfer direction after the arch seat 600 is completed. This is beneficial to maximize the use of the design strength of the arch frame 604 to ensure the safety of construction inside the tunnel during excavation, and also to reduce the design difficulty of the arch frame 604 and reduce the risk of deformation or even damage to the arch frame 604 during construction due to loads that are inconsistent with the actual operating state of the arch seat 600.

[0090] Furthermore, when excavating the support area 603 layer by layer downwards to form triangular support walls 6031 of various stages, this embodiment only needs to continuously extend the arch frame 604 along the first direction to keep the arch frame 604 supported on the triangular support wall 6031. Since the arch frame 604 itself is set along the first direction, this embodiment can also keep the load direction inside the arch frame 604 parallel to the setting direction of the arch frame 604 while continuously extending the arch frame 604, avoiding the load transmission direction from forming an angle with the setting direction of the arch frame 604, which would cause eccentric compression inside the arch frame 604 and ultimately lead to instability. After the excavation work reaches the elevation below the bottom elevation of the arch seat 600 opening, the bottom surface of the lower excavation area will gradually be exposed. At this time, the arch frame 604 can be connected to the exposed bottom surface of the lower excavation area, so that the connection state of this part of the arch frame 604 is consistent with the state after the arch seat 600 is completed, and there is no need to extend this part of the arch frame 604 further.

[0091] For the passage area 602, since the passage area 602 does not involve the support of the arch frame 604, this embodiment advances the working face of the passage area 602 in the vertical direction. On the one hand, it can form a working plane in the upper part of the passage area 602 that can be used to move and park construction equipment, so as to improve the excavation efficiency of the upper excavation area 601 and the support area 603, and facilitate the excavator to transfer the slag material 700 into the muck truck 400; on the other hand, it can also reduce the excavation difficulty of the passage area 602 itself.

[0092] In an optional embodiment, the thickness of the triangular support wall 6031 along the second direction is T, and T gradually increases in the direction away from the upper excavation area 601, so that the projection of the triangular support wall 6031 on the horizontal plane is a right trapezoid, which is equivalent to thickening the triangular support wall 6031 whose projection is rectangular. When blasting is carried out on the upper excavation area 601 or the passage area 602, if a flying stone hits the triangular support wall 6031, the thickened area will first come into contact with the flying stone and absorb the impact of the flying stone, thereby avoiding the area where the triangular support wall 6031 is connected to the arch frame 604 from being directly hit by flying stones and being damaged, which would lead to the bottom of the arch frame 604 being suspended. Furthermore, the shorter side of the projection of the triangular support wall 6031 on the horizontal plane is closer to the upper excavation area 601, and the longer side is closer to the opening of the arch seat 600. On the one hand, this can reduce the encroachment of the thickened area on the passage area 602, thus leaving more room for the excavation equipment to move. On the other hand, it also makes the side of the triangular support wall 6031 that is close to the passage area 602 a sloping surface, which can guide flying rocks away from the direction of the arch frame 604, thereby further reducing the probability of damage to the part where the triangular support wall 6031 is connected to the arch frame 604, the arch frame 604, and the section 302 inside the tunnel. In an optional implementation, in S3, when n is greater than one and the (n-1)th triangular support wall 6031 needs to be excavated, the (n-1)th triangular support wall 6031 on one side is excavated first, and the corresponding side of the arch frame 604 is connected to the bottom surface of the nth triangular support wall 6031 or the lower excavation area; then the triangular support wall 6031 on the other side is excavated and the corresponding arch frame 604 is extended; that is, the triangular support walls 6031 on both sides of the arch seat 600 are not excavated at the same time, but one side is excavated first and then the other side is excavated, so as to avoid the situation that both sides of the arch frame 604 are suspended, thereby improving the safety of construction inside the tunnel; the specific order can be either left to right or right to left.

[0093] In an optional implementation, in S3, when n is greater than two and it is necessary to excavate the (n-1)th triangular support wall 6031, for the (n-1)th triangular support wall 6031 on one side, the (n-1)th triangular support wall 6031 away from the arch seat 600 opening can be excavated first, and the corresponding arch frame 604 can be connected to the exposed nth triangular support wall 6031 or the bottom surface of the lower excavation area. Then, the (n-1)th triangular support wall 6031 near the arch seat 600 opening and the corresponding arch frame 604 can be extended. This implementation can avoid the situation where one side of the arch frame 604 is completely suspended, thereby further improving the safety of construction inside the tunnel.

[0094] In an optional implementation, when the advancing depth of the working face of the upper excavation zone 601 along the third direction is less than or equal to m meters, a water-cooled drill is used to advance the working face; when the advancing depth of the working face of the upper excavation zone 601 along the third direction is greater than m meters, a drill-and-blast method is used to advance the working face; the value of m is matched with the trajectory of the blasting debris so that the debris cannot fly out of the arch 600 opening, or so that when the debris reaches the arch 600 opening, most of its kinetic energy has been dissipated, thereby greatly reducing or even completely avoiding damage to the track 300 or other structures near the arch 600 opening caused by the debris; the trajectory of the debris can be determined by the cross-sectional dimensions of the arch 600, the inclination angle of the working face of the upper excavation zone 601, and the advance parameters for each cycle.

[0095] In an optional implementation, when excavating the tunnel area 602 in S3, the tunnel face of the tunnel area 602 is first advanced by drilling and blasting on the side of the tunnel area 602 closest to the upper excavation area 601, and then the tunnel face of the tunnel area 602 is advanced by water-jet drilling on the side of the tunnel area 602 closest to the tunnel entrance slope. The distribution width of the drilling and blasting construction area and the water-jet drilling construction area is determined according to the actual situation.

[0096] In this embodiment, when excavating the passage area 602, the drill-and-blast method is used only on the side of the passage area 602 closest to the upper excavation area 601. During blasting, the rock mass on the side of the passage area 602 away from the upper excavation area 601 can be used as a temporary protective measure for the track 300. Then, the remaining part is excavated by water-jet drilling, which can greatly reduce the probability of damage to the track 300.

[0097] In an optional implementation, the following steps are also included: setting a steering pulley 520 at the opening of the arch seat 600 and setting a winch 500 on the construction platform 100; connecting a traction rope 510 to the construction equipment (e.g., an excavator or a loader), with the end of the traction rope 510 away from the construction equipment passing around the steering pulley 520 and connecting to the winch 500; when the construction equipment needs to enter or exit the arch seat 600, the winch 500 is used to pull the construction equipment to move, so as to avoid the slope of the slope inside the arch seat 600 exceeding the maximum climbing slope of the construction equipment, which would prevent the construction equipment from entering or exiting the arch seat 600.

[0098] The above content is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A slag removal system inside an arch-shaped tunnel, comprising a construction platform (100), characterized in that, Also includes: A slag chute (200) is provided above the construction platform (100). The top of the slag chute (200) is provided with a receiving port, and the bottom of the slag chute (200) is provided with a discharge port. A slag chute hole is provided on the construction platform (100), and the discharge port is connected to the slag chute hole. The track (300) is connected to the construction platform (100). The track (300) includes an external section (301) and an internal section (302). One end of the external section (301) is located above the slag chute (200), and the other end of the external section (301) extends toward the opening of the arch seat (600). One end of the internal section (302) is connected to the end of the external section (301) away from the slag chute (200), and the other end of the internal section (302) extends into the arch seat (600). A slag removal vehicle (400) includes a frame (410) and a carriage (420). The frame (410) is provided with wheels (411) at the bottom. The carriage (420) is connected to the frame (410). The top of the carriage (420) is provided with a feed inlet, and the bottom of the carriage (420) is provided with a discharge outlet. The discharge outlet is provided with an openable cover plate (430). The slag removal vehicle (400) can travel along the track (300) via the wheels (411). A winch (500) and a traction rope (510) are provided. The winch (500) is connected to the construction platform (100). One end of the traction rope (510) is connected to the winch (500), and the other end of the traction rope (510) is connected to the slag removal vehicle (400).

2. The slag removal system inside the arch seat tunnel according to claim 1, characterized in that, It also includes columns (310), one end of which is connected to the construction platform (100) or the slope inside the arch (600) and the other end of which is connected to the track (300). At least two columns (310) are distributed at intervals along the length of the track (300).

3. The slag removal system inside the arch seat tunnel according to claim 2, characterized in that, At least one of the columns (310) and the track (300) is provided with a wedge-shaped pad, the two sides of the wedge-shaped pad along the height direction respectively abutting the track (300) and the column (310), and the thickness of the wedge-shaped pad gradually increases or decreases along the length direction of the track (300).

4. The slag removal system inside the arch seat tunnel according to claim 2, characterized in that, At least two adjacent columns (310) are also connected by diagonal braces (320).

5. A slag removal system for an arch-shaped tunnel according to any one of claims 1 to 4, characterized in that, A number of steering pulleys (520) are spaced apart along the length of the track (300), and the traction rope (510) passes around the steering pulleys (520) and connects to the slag discharge car (400).

6. A slag removal system for an arch-shaped tunnel according to any one of claims 1 to 4, characterized in that, The area of ​​the inlet is smaller than the area of ​​the top of the carriage (420). The inlet is located near one end of the carriage (420) along the length of the track (300). The height of the inlet near the middle of the carriage (420) along the length of the track (300) is higher than the height of the other end of the inlet.

7. A slag removal system for an arch-shaped tunnel according to any one of claims 1 to 4, characterized in that, The height of the end of the outer section (301) away from the opening of the arch (600) is higher than the height of the other end of the outer section (301).

8. A slag removal system for an arch-shaped tunnel according to any one of claims 1 to 4, characterized in that, Below the construction platform (100) is a slag chute (110), one end of which is connected to the slag chute hole, and the other end of which extends downward along the height direction.

9. A slag removal system inside an arch-shaped tunnel according to claim 8, characterized in that, The slag chute (110) is detachably connected to the slag chute.

10. A slag removal system for an arch-shaped tunnel according to any one of claims 1 to 4, characterized in that, A vehicle-stopping device is also provided at the end of the track (300) away from the opening of the arch (600).

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