Automatic slag collecting structure in vertical shaft excavation process

Abstract

The invention relates to an automatic slag collecting structure in the vertical shaft excavation process. The device is suitable for the technical field of engineering construction slag removal. According to the technical scheme, according to the automatic slag collecting structure in the vertical shaft excavation process, 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 invention 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. Summary of the invention

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

[0004] The technical solution adopted by the present invention is: an automatic slag collection structure during shaft excavation, a slag pool is arranged in a tunnel below the shaft at a position corresponding to the shaft, a water collection pool is arranged next to the slag pool in the tunnel, a channel is formed on the side wall of the slag pool to allow the accumulated water in the slag pool to flow into the water collection 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 present invention are as follows: the present invention sets a slag pool in the tunnel below the vertical shaft, so that during the construction of the vertical shaft, slag and wastewater in the vertical shaft fall into the slag pool below the vertical shaft, thereby collecting the slag and wastewater; the present invention sets a water collecting pool at a downstream position of the slag pool, and sets a channel connecting the slag pool and the water collecting pool on the side wall of the slag pool, so that the wastewater in the slag pool flows into the water collecting pool through the channel, thereby achieving the distinction between slag and wastewater, thereby facilitating the subsequent separate treatment of slag and wastewater; the present invention sets a water filtering mechanism in the channel between the slag pool and the water collecting pool, arranges a water filtering steel plate with water filtering holes in the channel between the slag pool and the water collecting pool, and arranges a reinforced gabion on the side of the water filtering steel plate close to the water collecting pool, so that when the wastewater in the slag pool flows into the water collecting pool through the channel, the slag in the slag pool can be prevented from flowing into the water collecting pool with the wastewater under the action of the water filtering mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 : Structural cross-sectional view of the shaft and tunnel in the present invention.

[0014] Figure 2 : Structural plan view of the present invention.

[0015] Figure 3 : A schematic structural diagram of a water filter steel plate in the present invention.

[0016] Figure 4 : The structural schematic diagram of the steel bar grid in the present invention.

[0017] Figure 5 : Schematic diagram of the steel bar gabion installed in the steel bar grid among the present invention.

[0018] Figure 6 : The structural plan view of the water filtering mechanism in the present invention.

[0019] In the figure: 1. Slag pool; 2. Concrete retaining wall; 3. Water filtering mechanism; 4. Water filtering steel plate; 5. Steel grid; 6. First steel cage; 7. Second steel cage; 8. Hook; 9. Water collecting tank; 10. Sewage pump; 11. Tunnel; 12. Vertical shaft. DETAILED DESCRIPTION

[0020] The present invention will be further described in detail below with reference to the accompanying drawings and by way of examples. The following examples are intended to explain the present invention but the present invention is not limited to the following examples.

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

[0022] In this embodiment, a slag pool 1 is provided in the tunnel 11 at a position corresponding to the shaft 12. Two concrete retaining walls 2 are arranged in the tunnel 11, and the wall of the concrete retaining wall 2 is 300 mm thick and 1000 mm high. The two ends of the two concrete retaining walls 2 are respectively connected to the side walls of the tunnel 11. The bottom of the concrete retaining wall 2 is provided with dowels, and the concrete retaining wall 2 is anchored and connected to the bottom plate of the tunnel 11 through the dowels. In this way, the concrete wall and the side wall of the tunnel 11 enclose a slag pool 1.

[0023] In this embodiment, a water collecting tank 9 is arranged beside the slag pool 1 in the tunnel 11. A channel is formed on the concrete side wall of one side of the slag pool 1, and the channel connects the slag pool 1 and the water collecting tank 9, and the wastewater accumulated in the slag pool 1 can flow into the water collecting tank 9 through the channel. The slag material left in the slag pool 1 is transported by an excavator.

[0024] In this embodiment, a slope is formed at the bottom of the slag pool 1 toward the water collecting pool 9, and the slope has a gradient of 5%. In this way, waste water in the slag pool 1 can flow into the water collecting pool 9.

[0025] In this embodiment, a water filtering mechanism 3 is provided at the channel of the slag pool 1. A water filtering steel plate 4 is arranged in the channel of the slag pool 1, and a water filtering hole is formed on the water filtering steel plate 4. A steel mesh frame 5 is arranged on the side of the water filtering steel plate 4 close to the water collecting tank 9. At least one steel cage is arranged in the steel mesh frame 5 along the water flow direction, and the steel cage is filled with crushed stones. In this way, when the wastewater in the slag pool 1 flows into the water collecting tank 9, the water filtering steel plate 4 and the steel cage play a filtering role, which can prevent the slag in the slag pool 1 from falling into the water collecting tank 9.

[0026] In this embodiment, the walls of the slag pool 1 on both sides of the channel are provided with mounting grooves arranged in the vertical direction, and channel steels are installed in the mounting grooves on both sides of the channel, and the openings of the channel steels are all facing the direction of the water filter steel plate 4, and the water filter steel plate 4 can be mounted in the channel steels on both sides of the channel from top to bottom. In this way, it is convenient to insert the water filter steel plate 4. The water filter steel plate 4 is a 20mm thick steel plate, and the plate surface is punched by a punching machine. The water filter hole d = 20mm, the water filter hole spacing is 20mm, and the water filter holes are arranged in a matrix; the water filter steel plate 4 can block slag with a particle size ≥ 20mm.

[0027] In this embodiment, two reinforced gabions are arranged in the steel mesh cage. The reinforced gabion close to the water filter steel plate 4 is the first reinforced gabion 6, which is filled with the first graded gravel; the reinforced gabion far away from the water filter steel plate 4 is the second reinforced gabion 7, which is filled with the second graded gravel. The particle size of the first graded gravel is larger than that of the second graded gravel. The first reinforced gabion 6 can block gravel with a particle size of less than 20 mm, and the second reinforced gabion 7 can block mud and sand. In this way, the wastewater in the slag pool 1 will pass through the water filter steel plate 4, the first reinforced gabion 6 and the second reinforced gabion 7 in sequence when flowing into the water collection pool 9 through the channel. This has a good filtering effect on the wastewater.

[0028] In this embodiment, the steel bar grid 5 is welded by angle irons with a size of 50mm×50mm×3mm. The steel bar grid 5 is fixed on the tunnel 11 and closed on the side of the steel bar grid 5. The steel bar grid 5 is formed with openings to facilitate the placement of steel gabions from the steel bar grid 5 into the steel bar grid 5.

[0029] In this embodiment, a lifting hook 8 is provided on the steel bar gabion so as to facilitate installation of the steel bar gabion by means of a lifting and hoisting device.

[0030] In this embodiment, a sewage pump 10 is provided in the water collection tank 9, and a float liquid level switch is connected to the sewage pump 10, and the float liquid level switch floats on the wastewater in the water collection tank 9. In this way, when the water level of the wastewater in the water collection tank 9 reaches a certain depth, the sewage pump 10 can be automatically turned on to realize the automatic pumping and drainage of the wastewater in the water collection tank 9.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An automatic slag collection structure during shaft excavation, characterized in that: A slag pool (1) is arranged in a tunnel (11) below the vertical shaft (12) at a position corresponding to the vertical shaft (12); a water collecting pool (9) is arranged beside the slag pool (1) in the tunnel (11); a channel is formed on the side wall of the slag pool (1) so that the accumulated water in the slag pool (1) can flow into the water collecting pool (9); and a water filtering mechanism (3) is arranged at the channel.

2. The automatic slag collection structure during shaft excavation according to claim 1, characterized in that: The water filtering mechanism (3) comprises a water filtering steel plate (4) arranged in the channel, the water filtering steel plate (4) is provided with water filtering holes, a steel mesh frame (5) is arranged on one side of the water filtering steel plate (4) close to the water collecting tank (9), and at least one steel cage is arranged in the steel mesh frame (5) along the water flow direction.

3. The automatic slag collection structure during shaft excavation according to claim 2, characterized in that: The walls of the slag pool (1) on both sides of the channel are provided with mounting grooves arranged in the vertical direction, and channel steels are installed in the mounting grooves on both sides of the channel, and the openings of the channel steels are all oriented towards the water filter steel plate (4). The water filter steel plate (4) can be mounted in the channel steels on both sides of the channel from top to bottom.

4. The automatic slag collection structure during shaft excavation according to claim 1, characterized in that: The slag pool (1) is formed by 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 slag collection structure during shaft excavation according to claim 1, characterized in that: The bottom of the slag pool (1) is provided with a slope toward the water collection pool (9).

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

7. The automatic slag collection structure during shaft excavation according to claim 6, characterized in that: A float liquid level switch is connected to the sewage pump (10) so that the sewage can be automatically pumped out according to the increase of the water level.

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