Smoke and dust collecting and treating device for vertical shaft TBM tunneling construction

Abstract

The utility model discloses a smoke and dust collecting and processing device for vertical shaft TBM tunneling construction, and belongs to the technical field of vertical shaft construction. A smoke and dust collecting and processing device for shaft TBM tunneling construction comprises a sealing cover fixed to the top of a shaft body and further comprises a water mist room used for dust falling and a smoke exhaust part used for extracting dust, the input end of the smoke exhaust part penetrates through the sealing cover and extends into the shaft body, and the output end of the smoke exhaust part is communicated with the interior of the water mist room. A plurality of groups of high-pressure water mist pipes are fixedly arranged in the water mist room; the sealing cover is arranged on the top of the vertical shaft body, the water mist room is fixedly arranged on the outer side of the vertical shaft body, smoke dust powder in the vertical shaft body can be pumped out through the smoke exhaust fan and conveyed into the water mist room, and the dust falling effect is achieved under the action of the high-pressure water mist spray head. The problem that dust is diffused outwards in the vertical shaft TBM tunneling process is solved from the source, and the influence of construction on the environment and resident life is reduced.

Description

Technical Field

[0001] This utility model relates to the field of vertical shaft construction technology, and in particular to a device for collecting and treating smoke and dust during vertical shaft TBM tunneling. Background Technology

[0002] In recent years, with the continuous development of society, the importance attached to the South-to-North Water Diversion Project, and the continuous development of high-speed rail and subway, our country has become the country with the most and most complex and diverse tunnels in the world. When tunnel operations were first started, the methods used were relatively backward, the risk factor was relatively high, the amount of dust was relatively large, and the noise pollution was serious. However, at present, with the development of the times and the continuous improvement of the level of science and technology, we have begun to pay attention to the technological development of tunnels, starting from aspects such as safety and rationality, mechanical construction, rational planning and environmental protection.

[0003] However, both traditional manual drilling and blasting and TBM technology construction generate dust and harmful gases during the construction process. Especially in the construction of vertical shaft TBMs, some of the rock cut by the equipment cannot be discharged in time. After being repeatedly cut and ground by the cutterhead, it will turn into powder, resulting in a significant increase in dust concentration. Furthermore, many tunnels are now being constructed in various protected areas and forests, where residents inevitably live. Without dust suppression measures, it will cause great harm to the environment and residents' lives.

[0004] Currently, the main method for dust suppression during tunnel construction is through forced-in or extraction ventilation. While this method can expel dust from the tunnel, it causes significant environmental pollution outside. Water mist dust suppression is also used in tunnels, but large amounts of water should not be used inside, especially since vertical shafts already contain a large amount of powdery rock debris. Direct use of water mist dust suppression would cause the water-dust mixture to fall and accumulate on the equipment under gravity, thus affecting construction. Therefore, it is essential to address the issue of smoke and dust from vertical shaft TBM excavation spreading outside the tunnel, and to resolve the impact of construction on the environment and residents' lives at its source. Utility Model Content

[0005] The purpose of this invention is to solve the problem of inconvenience in handling smoke and dust generated during vertical shaft construction in the existing technology, and to propose a smoke and dust collection and treatment device for vertical shaft TBM tunneling construction.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A dust collection and treatment device for vertical shaft TBM tunneling construction includes a cover fixed to the top of the shaft body, a water mist chamber for dust suppression, and a smoke exhaust section for dust extraction. The input end of the smoke exhaust section extends through the cover into the shaft body, and the output end of the smoke exhaust section is connected to the inside of the water mist chamber. Multiple sets of high-pressure water mist pipes are fixedly installed inside the water mist chamber, and each high-pressure water mist pipe is fixedly equipped with a high-pressure water mist nozzle.

[0008] To minimize the impact on the construction process, preferably, the top of the cover has an opening, and a baffle is provided on the opening.

[0009] To facilitate the extraction of smoke and dust, preferably, the smoke exhaust section includes a smoke exhaust fan, the input end of which extends through the cover into the main body of the shaft, and the output end of which is connected to one end of the water mist chamber through a duct.

[0010] To facilitate the fixing of the air duct, a fixing plate is further fixedly installed on the outer wall of the water mist chamber, a fixing clamp is fixedly installed on the fixing plate, and a movable clamp is installed on the fixing plate by bolts. The air duct is arranged between the fixing clamp and the movable clamp, and a shock-absorbing pad is fixedly installed between the fixing plate and the outer wall of the water mist chamber.

[0011] Furthermore, rubber pads are fixedly provided on the inner walls of both the fixed clamp and the movable clamp, and the inside of the rubber pads abuts against the outer wall of the air duct.

[0012] Preferably, a drain pipe with a valve is fixedly installed at the bottom of the water mist chamber, and an exhaust hole is opened at the other end of the water mist chamber. An arc-shaped cover is fixedly installed on the end face of the exhaust hole inside the water mist chamber, and an installation frame is fixedly installed on the outer end face of the exhaust hole. A filter screen is fixedly installed at one end of the installation frame that extends into the exhaust hole.

[0013] Compared with the prior art, this utility model provides a fume and dust collection and treatment device for vertical shaft TBM tunneling construction, which has the following beneficial effects:

[0014] 1. This dust collection and treatment device for vertical shaft TBM excavation construction uses a cover to cover the top of the vertical shaft body, and then a smoke exhaust fan is fixedly installed on the cover. A water mist chamber is fixedly installed on the outside of the vertical shaft body. The smoke exhaust fan can draw the dust from the vertical shaft body and transport it into the water mist chamber. Under the action of high-pressure water mist pipes and high-pressure water mist nozzles, the dust suppression effect can be achieved. This can solve the problem of dust spreading outward during vertical shaft TBM excavation from the source, complete the dust suppression before the dust spreads, save a lot of dust suppression costs, reduce the impact of construction on the environment and residents' lives, and ensure the progress of the project.

[0015] 2. This dust collection and treatment device for vertical shaft TBM excavation construction uses fixed and movable clamps to fix the air duct to the outer wall of the water mist chamber, reducing shaking during use. Furthermore, a shock-absorbing pad is fixed between the fixed plate and the water mist chamber to reduce vibration and ensure normal use. Rubber pads are also fixed to the inner walls of the fixed and movable clamps, which not only improves the fixing effect of the air duct and prevents damage to the air duct, but also has a certain buffering and shock absorption effect.

[0016] The parts of this device not described herein are the same as or can be implemented using existing technologies. This utility model uses a cover to cover the top of the shaft body, and then a smoke exhaust fan is fixedly installed on the cover. A water mist chamber is fixedly installed on the outside of the shaft body. The smoke exhaust fan can extract the dust and powder inside the shaft body and transport it into the water mist chamber. Under the action of high-pressure water mist pipes and high-pressure water mist nozzles, a dust suppression effect can be achieved, solving the problem of dust spreading outward during the shaft TBM excavation process from the source. Dust suppression is completed before dust spreads, saving a lot of dust suppression costs, reducing the impact of construction on the environment and residents' lives, and ensuring the progress of the project. Attached Figure Description

[0017] Figure 1 This utility model presents a structural schematic diagram of a fume and dust collection and treatment device for vertical shaft TBM tunneling construction. Figure 1 ;

[0018] Figure 2 This utility model presents a structural schematic diagram of a fume and dust collection and treatment device for vertical shaft TBM tunneling construction. Figure 2 ;

[0019] Figure 3 This utility model presents a structural schematic diagram of a fume and dust collection and treatment device for vertical shaft TBM tunneling construction. Figure 3 ;

[0020] Figure 4 This utility model proposes a device for collecting and treating smoke and dust during vertical shaft TBM tunneling. Figure 3 Enlarged view of section A;

[0021] Figure 5 This is a schematic diagram of the structure of a fixing clamp for a smoke and dust collection and treatment device for vertical shaft TBM tunneling construction proposed in this utility model.

[0022] In the diagram: 1. Shaft body; 2. Cover; 3. Baffle; 4. Exhaust fan; 5. Air duct; 6. High-pressure water mist pipe; 7. Water mist chamber; 701. Exhaust vent; 702. Arc-shaped cover; 8. Sewage pipe; 9. Fixing plate; 901. Fixing clamp; 902. Movable clamp; 903. Rubber pad; 904. Shock-absorbing pad; 10. Mounting frame; 11. Filter screen. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0024] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] Example:

[0026] Reference Figures 1-5 A dust collection and treatment device for vertical shaft TBM excavation includes a cover 2 fixed to the top of the vertical shaft body 1. The cover 2 is a rotating disc-shaped structure, preferably made of aluminum alloy. The outer wall of the vertical shaft body 1 and the bottom of the cover 2 are fixedly connected by a triangular bracket. A sealing gasket is fixedly installed on the bottom end face of the cover 2 and the top end face of the vertical shaft body 1 to reduce the leakage of smoke. Anti-rust paint is fixedly installed on the cover 2. An opening is provided at the top of the cover 2, and a cover 3 is provided on the opening. The opening allows personnel, materials and equipment to enter and exit the vertical shaft body 1. It also includes a water mist chamber 7 for dust suppression and a smoke exhaust section for dust extraction. The input end of the smoke exhaust section extends into the shaft body 1 through the cover 2, and the output end of the smoke exhaust section is connected to the water mist chamber 7. Multiple sets of high-pressure water mist pipes 6 are fixedly installed in the water mist chamber 7. There are two to ten sets of high-pressure water mist pipes 6, preferably four sets. High-pressure water mist nozzles are fixedly installed on each set of high-pressure water mist pipes 6.

[0027] In use, the top of the shaft body 1 is covered by the cover 2, and a smoke exhaust fan 4 is fixedly installed on the cover 2. A water mist chamber 7 is fixedly installed on the outside of the shaft body 1. The smoke exhaust fan 4 can draw out the smoke and dust in the shaft body 1 and transport it into the water mist chamber 7. Under the action of the high-pressure water mist pipe 6 and the high-pressure water mist nozzle, the dust suppression effect can be achieved. This can solve the problem of dust spreading outward during the shaft TBM excavation process from the source, complete the dust suppression before the dust spreads, save a lot of dust suppression costs, reduce the impact of construction on the environment and residents' lives, and ensure the progress of the project.

[0028] Reference Figures 1-3 Here, we design the smoke exhaust section as a smoke exhaust fan 4. The input end of the smoke exhaust fan 4 extends into the vertical shaft body 1 through the cover 2, and the output end of the smoke exhaust fan 4 is connected to one end of the water mist chamber 7 through the air duct 5. There are multiple sets of smoke exhaust fans 4. Here, we prefer two sets. When in use, by starting the smoke exhaust fan 4, air is drawn from the vertical shaft body 1, and the smoke and dust generated during construction can be transported to the water mist chamber 7 through the air duct 5, so as to deal with the smoke and dust in time and improve the use effect.

[0029] Reference Figure 1 , Figure 3 and Figure 5 A fixing plate 9 is fixedly installed on the outer wall of the water mist chamber 7. A fixing clip 901 is fixedly installed on the fixing plate 9. A movable clip 902, corresponding to the fixing clip 901, is detachably installed on the fixing plate 9 via bolts. The air duct 5 is placed between the fixing clip 901 and the movable clip 902 to fix the air duct 5. A shock-absorbing pad 904 is fixedly installed between the fixing plate 9 and the outer wall of the water mist chamber 7. Rubber pads 903 are fixedly installed on the inner walls of both the fixing clip 901 and the movable clip 902. The duct 5 abuts against the outer wall. During use, the duct 5 can be fixed to the outer wall of the mist chamber 7 by using the fixed clamp 901 and the movable clamp 902, reducing shaking during use. In addition, a shock-absorbing pad 904 is fixedly installed between the fixed plate 9 and the mist chamber 7 to reduce vibration and ensure normal use. Furthermore, a rubber pad 903 is fixedly installed on the inner wall of the fixed clamp 901 and the movable clamp 902, which not only improves the fixing effect of the duct 5 and avoids damaging the duct 5, but also has a certain buffering and shock-absorbing effect.

[0030] Reference Figures 2-4A drain pipe 8 with a valve is fixedly installed at the bottom of the water mist chamber 7. An inclined surface is fixedly installed at the bottom inner part of the water mist chamber 7, with the inlet of the drain pipe 8 located at the bottom of the inclined surface. An exhaust port 701 is opened at the other end of the water mist chamber 7. An arc-shaped cover 702 is fixedly installed on the end face of the exhaust port 701 inside the water mist chamber 7. The opening of the arc-shaped cover 702 faces downwards, providing a certain degree of obstruction to the flue gas and preventing it from flowing directly to the exhaust port 701. A valve is fixedly installed on the outer end face of the exhaust port 701. The system includes a mounting frame 10, which is fixed to the outer wall of the mist chamber 7 with screws. A filter screen 11 is fixedly installed at one end of the mounting frame 10 that extends into the exhaust port 701. During use, a drain pipe 8 is fixedly installed on the mist chamber 7 to facilitate the treatment of the smoke and dust collected inside the mist chamber 7. An exhaust port 701 is provided on the mist chamber 7 to facilitate the discharge of gas inside the mist chamber 7. The filter screen 11 installed in the exhaust port 701 can reduce the amount of smoke and dust carried by the gas during discharge and improve the performance.

[0031] In this invention, the TBM tunneling machine generates a large amount of dust and smoke during the tunneling process in the shaft body 1. Under the action of ventilation, this dust and smoke moves towards the tunnel entrance and is blocked by the aluminum alloy cover 2. At this time, it can be discharged in a concentrated manner by the exhaust fan 4 and enters the water mist room 7 through the air duct 5. In the water mist room 7, the high-pressure water mist system is used to reduce the dust into mud and water, and finally discharge it through the sewage pipe 8.

[0032] In practical use, a 10m diameter, 2mm thick aluminum alloy cover 2 is installed at the opening of the main shaft 1, and reinforced with 5cm angle steel to prevent deformation. The cover 2 is treated with anti-rust paint to prevent rusting, and fixed inside the opening on all four sides. A 3m long and 3m wide movable opening is set on the door for personnel, materials, and equipment to enter and exit. Preferably, two 1.1m diameter circular smoke exhaust outlets are set on the door, and each is equipped with a 1.1m diameter fan 4 with a power of 4kW. The dust discharged by the smoke exhaust fans 4 is connected to a 5m high, 5m long at the bottom, and 3m wide water mist chamber 7 using a duct 5. The high-pressure water mist pipes 6 are arranged at 1m intervals, each 2.8m long, and a high-pressure water mist nozzle is set at 0.4m intervals. The water mist chamber 7 can be constructed using prefabricated materials. During construction, a sewage system must be in place and the chamber must be airtight to prevent dust leakage.

[0033] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A smoke dust collecting and processing device for shaft TBM tunneling construction, comprising a cover (2) fixed on the top of a shaft body (1), characterized in that, It also includes a water mist chamber (7) for dust suppression. And a smoke exhaust section for extracting dust, the input end of the smoke exhaust section extends into the shaft body (1) through the cover (2), the output end of the smoke exhaust section is connected to the water mist chamber (7), and multiple sets of high-pressure water mist pipes (6) are fixedly installed in the water mist chamber (7), and each high-pressure water mist pipe (6) is fixedly equipped with a high-pressure water mist nozzle.

2. A smoke and dust collecting and processing device for vertical shaft TBM tunneling construction according to claim 1, characterized in that, The top of the cover (2) has an opening, and a cover (3) is provided on the opening.

3. A smoke and dust collecting and processing device for vertical shaft TBM tunneling construction according to claim 1, characterized in that, The smoke exhaust unit includes a smoke exhaust fan (4), the input end of which extends through the cover (2) into the shaft body (1), and the output end of which is connected to one end of the water mist chamber (7) through the air duct (5).

4. The dust collection and treatment device for vertical shaft TBM tunneling construction according to claim 3, characterized in that, A fixing plate (9) is fixedly installed on the outer wall of the water mist chamber (7). A fixing clamp (901) is fixedly installed on the fixing plate (9). A movable clamp (902) is detached from the fixing plate (9) by bolts. The air duct (5) is arranged between the fixing clamp (901) and the movable clamp (902). A shock-absorbing pad (904) is fixedly installed between the fixing plate (9) and the outer wall of the water mist chamber (7).

5. A dust collection and treatment device for vertical shaft TBM tunneling construction according to claim 4, characterized in that, Both the fixed clamp (901) and the movable clamp (902) are fixedly provided with rubber pads (903) on their inner walls, and the inside of the rubber pads (903) abuts against the outer wall of the air duct (5).

6. A dust collection and treatment device for vertical shaft TBM tunneling construction according to claim 1, characterized in that, The bottom of the water mist chamber (7) is fixedly provided with a drain pipe (8) with a valve, and the other end of the water mist chamber (7) is provided with an exhaust hole (701). An arc-shaped cover (702) is fixedly provided on the end face of the exhaust hole (701) inside the water mist chamber (7). An installation frame (10) is fixedly provided on the outer end face of the exhaust hole (701). A filter screen (11) is fixedly provided on one end of the installation frame (10) extending into the exhaust hole (701).

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