Long inclined shaft TBM (Tunnel Boring Machine) external circulating water system

Abstract

The utility model discloses a long inclined shaft TBM external circulating water system, which is characterized by comprising a rainwater collecting pool (1), a water storage tank (2), an inclined shaft water storage tank (3) and a settling pond (4), the rainwater collecting pool (1) is connected with the water storage tank (2) through a pipeline, the water storage tank (2) is communicated with the inclined shaft water storage tank (3) through a pipeline, and the inclined shaft water storage tank (3) is connected with the TBM external circulating water system through a pipeline. The settling ponds (4) are mainly used for settling accumulated water pumped out of the tunnel, the settling ponds (4) are arranged in multiple stages, and the settling pond of the last stage is connected with the water storage tank (2) through a pipeline. The rainwater collection pool system is mainly used for collecting rainwater on a mountain around construction; the three-stage sedimentation tank system is mainly used for precipitating sewage pumped out of a tunnel and then supplying the sewage to the TBM for use; the device is suitable for local conditions, saves cost and is convenient to construct.

Description

Technical Field

[0001] The utility model relates to the technical field of TBM construction, especially for the external circulating water system of TBM with a long inclined shaft. Background Technique

[0002] TBM is a large comprehensive construction equipment integrating machinery, electricity, hydraulics and pneumatics to realize tunnel construction automation. A large amount of circulating water is required during the TBM construction process to reduce the heat generated during equipment operation, improve the construction environment and ensure the occupational health of construction personnel.

[0003] According to the design data, the total water demand of the whole TBM is Q_TBM_required = 45 m³ / h (pressure 5 - 8 bar, T ≤ 25 °C), and the maximum water demand is 54.72 m 3 / h. Calculated according to 54.72 m 3 / h, with the daily working hours calculated as 20 h, the total water demand is 1094.4 m 3 .

[0004] For the conventional external circulating water system in the city, tap water is generally used for circulating water. A water storage tank is established, and an external circulating water with sufficient pressure is provided for the TBM through a booster pipeline pump. However, in general, the surrounding conditions during TBM construction are relatively complex, there is no tap water, no suitable water source intake point, and the groundwater cannot meet the water demand for TBM construction. Therefore, in order to provide external circulating water with sufficient pressure for TBM construction, a reasonable layout method for the external circulating water system is urgently needed. There is no relevant report on the layout of the external circulating water system of the same type of open TBM in domestic literature; Content of the Utility Model

[0005] The purpose of the utility model is to solve the problem of water resource shortage, and provides an external circulating water system for TBM construction under complex conditions.

[0006] To solve the above problems, the utility model is realized through the following technical solutions:

[0007] An external circulating water system for a long inclined shaft TBM, which includes a rainwater collection pool, a sedimentation tank, a water storage tank, and an inclined shaft water storage tank. The rainwater collection pool is connected to the water storage tank through a pipeline, the water storage tank is connected to the inclined shaft water storage tank through a pipeline, the inclined shaft water storage tank is connected to the TBM external circulating water system through a pipeline, and the sedimentation tank is mainly used for sedimentation of the accumulated water pumped out of the tunnel. The sedimentation tank is provided with multiple stages, and the last stage sedimentation tank is connected to the water storage tank through a pipeline.

[0008] Furthermore, the rainwater collection pool is constructed with C30 reinforced concrete, with a length of 15 m, a width of 10 m, a depth of 3 m, a thickness of 0.3 m, and a storage capacity of 450 m 3 .

[0009] Further, the water storage tank is fabricated by welding 6-mm steel plates. It is 9 m long, 3 m wide, and 3 m deep, with a storage capacity of 162 m 3 .

[0010] Further, the inclined shaft water storage tank is fabricated by welding 6-mm steel plates. The water storage tank is trapezoidal in shape, 9 m long, 0.7 m wide, 0.5 m high at the upper edge, 2.8 m high at the lower edge, and has a storage capacity of 10 m 3 .

[0011] Further, the sedimentation tank is made of C30 reinforced concrete, 120 m long, 25 m wide, 4 m deep, 0.3 m thick, and has a storage capacity of 12,000 m 3 .

[0012] The rainwater collection tank mainly collects rainwater from the mountains around the construction site; the sedimentation tank precipitates the accumulated water pumped out from the tunnel and then supplies it for the use of the TBM; the water storage tank mainly stores water on the ground, and the water collected from rainwater and the sedimentation tank is pumped into the water storage tank for storage; the inclined shaft water storage tank mainly serves as a transfer water tank for the external circulation water system of the TBM. Using the principle of high water level difference, it provides external circulation water with sufficient pressure for the TBM to meet the construction requirements of the TBM.

[0013] The utility model has the following beneficial effects:

[0014] 1. Recycling the construction wastewater in the tunnel saves costs and reduces the external drainage volume;

[0015] 2. Collecting mountain water and rainwater during the dry season has a relatively low cost;

[0016] 3. Utilizing the characteristics of a long inclined shaft with a large slope, a high-level water tank is arranged to meet the demand for the pressure of the external circulation water, breaking the conventional layout method of the external circulation water.

[0017] The utility model is reasonably designed, saves costs, and solves the problems of insufficient external circulation water and pressure in TBM construction. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0019] Figure 1 It is a general schematic diagram of the external circulation water system for TBM construction of the present utility model.

[0020] In the figure, 1 is a rainwater collection pool, 2 is a water storage tank, 3 is an inclined shaft water storage tank, 4 is a three-stage sedimentation tank, and 5 is a water pump. Detailed implementation manner

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] As Figure 1 shown, a long inclined shaft TBM external circulating water system includes a rainwater collection pool 1, a water storage tank 2, an inclined shaft water storage tank 3, and a sedimentation tank 4. The rainwater collection pool 1 is connected to the water storage tank 2 through a pipeline. The water storage tank 2 is connected to the inclined shaft water storage tank 3 through a pipeline. The inclined shaft water storage tank 3 is connected to the TBM external circulating water system through a pipeline. The sedimentation tank 4 mainly sediments the accumulated water pumped out of the tunnel. The sedimentation tank 4 is provided with three to four levels, and the last-level sedimentation tank is connected to the water storage tank 2 through a pipeline.

[0023] Preferably, the rainwater collection pool is constructed with C30 reinforced concrete to ensure the strength of the pool. Its length is 15 m, width is 10 m, depth is 3 m, thickness is 0.3 m, and storage capacity is 450 m 3 .

[0024] Preferably, the water storage tank is fabricated by welding 6-mm steel plates, which is convenient for installation and recycling. Its length is 9 m, width is 3 m, depth is 3 m, and storage capacity is 162 m 3 , and two can be used.

[0025] Preferably, the inclined shaft water storage tank is fabricated by welding 6-mm steel plates. The water storage tank is trapezoidal. The length of the water storage tank is 9 m, width is 0.7 m, the upper height of the water storage tank is 0.5 m, the lower height of the water storage tank is 2.8 m, and the storage capacity is about 10 m 3 .

[0026] Preferably, the sedimentation tank is constructed with C30 reinforced concrete. Since the sewage discharge volume in the tunnel is large and a large sedimentation space is required, the strength of sedimentation must be ensured. Its length is 120 m, width is 25 m, depth is 4 m, thickness is 0.3 m, and storage capacity is 12000 m 3 .

[0027] The rainwater collection pond mainly collects rainwater from the mountains around the construction site; the three-stage sedimentation tank sedimentates the accumulated water pumped out from the tunnel and then supplies it for the use of the TBM; the water storage tank is mainly for storing water on the ground, and the water collected from rainwater and the sedimentation tank is pumped into the water storage tank for preservation; the inclined shaft water storage tank mainly serves as a transfer water tank for the external circulation water system of the TBM. Using the principle of high water level difference, it provides external circulation water with sufficient pressure for the TBM to meet the construction requirements of the TBM.

[0028] The mountain spring and rainwater collection pond is cast with C30 reinforced concrete and belongs to a high-level water tank. It is set below the TBM spoil ground according to the site conditions. The spoil ground serves as a natural filtration system for mountain spring and rainwater. The filtered water is stored in the rainwater collection pond to meet the requirements of temporary water storage. It flows into the water storage tank by gravity through a φ200mm water pipe.

[0029] The sedimentation tank is set in a low-lying area near the entrance of the TBM inclined shaft according to the site conditions and is divided into three stages of sedimentation to meet the sedimentation requirements of the wastewater pumped up from the tunnel. The wastewater in the tunnel is pumped into the three-stage sedimentation tank through a φ300mm water pipe by a pump station, and the sedimentated water is pumped into the water storage tank 2 through a φ200mm water pipe by a water pump 5.

[0030] The water storage tank 2 is connected to the inclined shaft water storage tank 3 through a φ200mm water pipe.

[0031] The inclined shaft water storage tank 3 conducts the transfer of the external circulation water of the TBM. It is set at the position of the tunnel mileage 900m in the inclined shaft and extends to the TBM through a φ200mm water pipe. The height difference to the TBM in the tunnel meets the requirements of the water pressure for the external circulation of the TBM.

[0032] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A long inclined shaft TBM external circulation water system, characterized by: It comprises a rainwater collection pool (1), a water storage tank (2), an inclined well water storage tank (3), and a sedimentation tank (4). The rainwater collection pool (1) is connected to the water storage tank (2) via a pipeline, the water storage tank (2) is connected to the inclined well water storage tank (3) via a pipeline, the inclined well water storage tank (3) is connected to the TBM external circulation water system via a pipeline, and the sedimentation tank (4) is mainly used to precipitate the accumulated water pumped out of the tunnel. The sedimentation tank (4) is arranged in multiple stages, wherein the last stage sedimentation tank is connected to the water storage tank (2) via a pipeline.

2. The long inclined shaft TBM external circulation water system according to claim 1 is characterized by: The rainwater collection pool (1) is constructed of C30 reinforced concrete and is 15m long, 10m wide, 3m deep, 0.3m thick, and has a storage capacity of 450m 3 .

3. The long inclined shaft TBM external circulation water system according to claim 1 is characterized by: The water tank (2) is made of 6mm steel plate welding and is 9m long, 3m wide, 3m deep, and has a storage capacity of 162m 3 .

4. The long inclined shaft TBM external circulation water system according to claim 1 is characterized by: The inclined well water storage tank (3) is made of 6mm steel plate welding and is trapezoidal in shape with a storage capacity of 10m 3 .

5. The long inclined shaft TBM external circulation water system according to claim 1 is characterized by: The sedimentation tank (4) is constructed of C30 reinforced concrete and is 120 m long, 25 m wide, 4 m deep, 0.3 m thick, with a storage capacity of 12,000 m 3 .

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