Automatic slag collecting structure in vertical shaft excavation process

Abstract

The utility model relates to an automatic slag collecting structure in a vertical shaft excavation process. The device is suitable for the technical field of engineering construction slag removal. According to the technical scheme, a rock ballast pool is arranged at the position, corresponding to a vertical shaft, in a tunnel below the vertical shaft, a water collecting pool is arranged beside the rock ballast pool, a channel capable of enabling accumulated water in the pool to flow into the water collecting pool is formed in the side wall of the rock ballast pool, and a water filtering mechanism is arranged at the position of the channel. After slag charge and wastewater in the vertical shaft fall into the rock ballast pool below the vertical shaft, the slag charge and the wastewater can be distinguished through the water filtering mechanism, so that the slag charge and the wastewater can be conveniently and separately treated subsequently.

Description

Technical Field

[0001] The utility model relates to an automatic slag collection structure in the process of shaft excavation, which is applicable to the technical field of slag removal in engineering construction. Background Art

[0002] For vertical shafts with greater depth, the most commonly used tunnel excavation method in China is the shield method, which is the SBE construction of vertical shafts. The excavation sequence of large-scale vertical shafts is: pilot hole → counter-hole expansion → SBE full-section excavation. During counter-hole expansion, the counter-hole drill is lifted from bottom to top, and the slag naturally sinks to the bottom of the shaft; during SBE full-section excavation, the rotary drilling rig excavates from top to bottom, and the slag slides to the bottom of the shaft through the counter-hole. During excavation, a large amount of construction water is required for equipment excavation, and construction wastewater will naturally pour down along the shaft wall, causing the slag pile at the bottom of the shaft to mix with the wastewater. The slag with wastewater is prone to cause environmental pollution when it is transported out, and the slag-water mixture also requires secondary treatment. Utility Model Content

[0003] The technical problem to be solved by the utility model is to enable slag to be automatically collected during the shaft excavation process and to achieve slag-water separation.

[0004] The technical scheme adopted by the utility model is: an automatic collection structure for slag materials during shaft excavation, a slag pool is arranged in a tunnel below the shaft at a position corresponding to the shaft, a water collecting pool is arranged beside the slag pool in the tunnel, a channel is formed on the side wall of the slag pool so that the accumulated water in the slag pool can flow to the water collecting pool, and a water filtering mechanism is arranged at the channel.

[0005] The slag pool is formed by a concrete retaining wall arranged on the bottom surface of the tunnel and the side walls on both sides of the tunnel.

[0006] The water filtering mechanism comprises a water filtering steel plate arranged in the channel, the water filtering steel plate is formed with water filtering holes, a steel mesh frame is arranged on one side of the water filtering steel plate close to the water collecting tank, and at least one steel cage is arranged in the steel mesh frame along the water flow direction.

[0007] The slag pool walls on both sides of the channel are provided with vertically arranged clamping grooves, and channel steels are installed in the clamping grooves on both sides of the channel. The openings of the channel steels are all facing the direction of the water filter steel plates, and the water filter steel plates can be clamped from top to bottom in the channel steels on both sides of the channel.

[0008] The slag pool is formed by a concrete retaining wall arranged on the bottom surface of the tunnel and the side walls on both sides of the tunnel.

[0009] The bottom of the slag pool is sloped toward the water collection pool.

[0010] A sewage pump is arranged in the water collection tank.

[0011] A float liquid level switch is connected to the sewage pump, which can automatically pump out water according to the increase of water level.

[0012] The beneficial effects of the utility model are as follows: by arranging a slag pool in the tunnel under the vertical shaft, during the construction of the vertical shaft, the slag and waste water in the vertical shaft can fall into the slag pool under the vertical shaft, playing a role in collecting the slag and waste water; by arranging a water collection pool at the downstream position of the slag pool and arranging a channel connecting the slag pool and the water collection pool on the side wall of the slag pool, it is convenient for the waste water in the slag pool to flow into the water collection pool through the channel, realizing the separation of the slag and the waste water, so as to facilitate the subsequent separate treatment of the slag and the waste water; by arranging a water filtering mechanism in the channel between the slag pool and the water collection pool, arranging a water filtering steel plate with water filtering holes in the channel between the slag pool and the water collection pool, and arranging a reinforced stone cage on the side close to the water collection pool on the water filtering steel plate, when the waste water in the slag pool flows into the water collection pool through the channel, the slag in the slag pool can be prevented from flowing into the water collection pool along with the waste water under the action of the water filtering mechanism. Description of the Drawings

[0013] Figure 1 : Structural cross-sectional view of the vertical shaft and the tunnel in the utility model.

[0014] Figure 2 : Structural plan view of the utility model.

[0015] Figure 3 : Structural schematic diagram of the water filtering steel plate in the utility model.

[0016] Figure 4 : Structural schematic diagram of the steel bar grid in the utility model.

[0017] Figure 5 : Schematic diagram of the installation of the reinforced stone cage in the steel bar grid in the utility model.

[0018] Figure 6 : Structural plan view of the water filtering mechanism in the utility model.

[0019] In the figure: 1, slag pool; 2, concrete retaining wall; 3, water filtering mechanism; 4, water filtering steel plate; 5, steel bar grid; 6, first reinforced stone cage; 7, second reinforced stone cage; 8, lifting hook; 9, water collection pool; 10, sewage pump; 11, tunnel; 12, vertical shaft. Detailed Description of the Preferred Embodiment

[0020] The following further detailed description of the present utility model is given in conjunction with the drawings and through embodiments. The following embodiments are explanations of the present utility model, and the present utility model is not limited to the following embodiments.

[0021] This embodiment is an automatic collection structure for slag during the excavation of a vertical shaft 12. A tunnel 11 is made under the vertical shaft 12, and the slag and waste water generated during the excavation of the vertical shaft 12 will fall into the tunnel 11 under the action of gravity.

[0022] In this embodiment, a slag pond 1 is arranged at a position corresponding to the shaft 12 in the tunnel 11. Among them, two concrete retaining walls 2 are arranged in the tunnel 11. The wall thickness of the concrete retaining wall 2 is 300 mm and the height is 1000 mm. The two ends of the concrete retaining wall 2 are respectively connected to the side walls on both sides of the tunnel 11. The bottom of the concrete retaining wall 2 is provided with dowel bars, and the concrete retaining wall 2 is anchored to the bottom plate of the tunnel 11 through the dowel bars. In this way, the concrete wall and the side wall of the tunnel 11 enclose to form the slag pond 1.

[0023] In this embodiment, a sump 9 is arranged beside the slag pond 1 in the tunnel 11. A channel is made on the concrete side wall on one side of the slag pond 1. The channel communicates the slag pond 1 with the sump 9, and the waste water accumulated in the slag pond 1 can flow into the sump 9 through the channel. The slag left in the slag pond 1 is transported by an excavator.

[0024] In this embodiment, a slope is made at the bottom of the slag pond 1 towards the sump 9, and the slope of the slope is 5%. In this way, it is convenient for the waste water in the slag pond 1 to flow into the sump 9.

[0025] In this embodiment, a water filtering mechanism 3 is arranged at the channel of the slag pond 1. Among them, a water filtering steel plate 4 is arranged in the channel of the slag pond 1. The water filtering steel plate 4 is provided with water filtering holes. On the side of the water filtering steel plate 4 close to the sump 9, a steel bar grid 5 is arranged. At least one steel bar gabion is arranged in the steel bar grid 5 along the water flow direction, and the steel bar gabion is filled with crushed stones. In this way, when the waste water in the slag pond 1 flows into the sump 9, the water filtering steel plate 4 and the steel bar gabion play a filtering role, and it can prevent the slag in the slag pond 1 from falling into the sump 9.

[0026] In this embodiment, clamping grooves arranged in the vertical direction are made on the walls of the slag pond 1 on both sides of the channel. Channel steel is installed in the clamping grooves on both sides of the channel, and the openings of the channel steel all face the direction of the water filtering steel plate 4. The water filtering steel plate 4 can be clamped in the channel steel on both sides of the channel from top to bottom. In this way, it is convenient to realize the insertion of the water filtering steel plate 4. The water filtering steel plate 4 is a steel plate with a thickness of 20 mm, and the plate surface is integrally punched by a punching machine. The diameter of the water filtering hole d = 20 mm, the spacing of the water filtering holes is 20 mm, and the water filtering holes are arranged in a matrix; the water filtering steel plate 4 can block the slag with a particle size ≥ 20 mm.

[0027] In this embodiment, two steel bar gabions are arranged inside the steel bar cage. The steel bar gabion close to the water filtering steel plate 4 is the first steel bar gabion 6, and the first steel bar gabion 6 is filled with the first graded crushed stone; the steel bar gabion far from the water filtering steel plate 4 is the second steel bar gabion 7, and the second steel bar gabion 7 is filled with the second graded crushed stone. The particle size of the first graded crushed stone is larger than that of the second graded crushed stone. The first steel bar gabion 6 can block the crushed stone with a particle size < 20 mm, and the second steel bar gabion 7 can block the sediment. Thus, when the wastewater in the slag pond 1 flows through the channel into the sump 9, it will sequentially pass through the water filtering steel plate 4, the first steel bar gabion 6 and the second steel bar gabion 7. This plays a good filtering role for the wastewater.

[0028] In this embodiment, the steel bar grid 5 is welded by angle irons with a size of 50 mm × 50 mm × 3 mm. The steel bar grid 5 is fixed on the side of the tunnel 11 and is closed, and an opening is made in the steel bar grid 5, so as to facilitate the placement of the steel bar gabion into the steel bar grid 5.

[0029] In this embodiment, a lifting hook 8 is arranged on the steel bar gabion. Thus, it is convenient to install the steel bar gabion through a hoisting device.

[0030] In this embodiment, a sewage pump 10 is arranged in the sump 9. A float level switch is connected to the sewage pump 10, and the float level switch floats on the wastewater in the sump 9. Thus, after the wastewater level in the sump 9 reaches a certain depth, the sewage pump 10 can be automatically started to realize the automatic pumping of the wastewater in the sump 9.

[0031] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. An automatic collection structure for slag during shaft excavation, characterized in that: A slag pond (1) is provided at a position corresponding to the vertical shaft (12) in the tunnel (11) below the vertical shaft (12). A sump (9) is provided beside the slag pond (1) in the tunnel (11). A channel that can allow the accumulated water in the slag pond (1) to flow into the sump (9) is made on the side wall of the slag pond (1), and a water filtering mechanism (3) is provided at the channel.

2. The automatic collection structure for slag during the shaft excavation process according to claim 1, characterized in that: The water filtering mechanism (3) has a water filtering steel plate (4) arranged in the channel. The water filtering steel plate (4) is made with water filtering holes. A steel bar grid (5) is arranged on the side of the water filtering steel plate (4) close to the sump (9). At least one steel bar gabion is arranged in the steel bar grid (5) along the water flow direction.

3. The automatic collection structure for slag during the shaft excavation process according to claim 2, characterized in that: Mounting grooves arranged in the vertical direction are made on the side walls of the slag pond (1) on both sides of the channel. Channels are installed in the mounting grooves on both sides of the channel, and the openings of the channels all face the direction of the water filtering steel plate (4). The water filtering steel plate (4) can be clamped in the channels on both sides of the channel from top to bottom.

4. The automatic collection structure for slag during shaft excavation according to claim 1, wherein: The slag pond (1) is formed by enclosing a concrete retaining wall (2) arranged on the bottom surface of the tunnel (11) and the side walls on both sides of the tunnel (11).

5. The automatic collection structure for slag during the shaft excavation process according to claim 1, wherein: The bottom of the slag pond (1) is made with a slope facing the sump (9).

6. The automatic collection structure for slag during shaft excavation according to claim 1, characterized in that: A sewage pump (10) is provided in the sump (9).

7. The automatic collection structure for slag during shaft excavation according to claim 6, characterized in that: A float level switch is connected to the sewage pump (10), and it can automatically drain by pumping according to the rising water level.

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