Shield launching well structure also serving as mining method tunnel construction channel

Abstract

The utility model discloses a shield launching shaft structure concurrently serving as a mining method tunnel construction channel, which comprises an underground diaphragm wall vertical shaft communicated with a shield tunnel, the underground diaphragm wall vertical shaft comprises an underground diaphragm wall which defines a quadrangle, a side wall is arranged at the lower part of the underground diaphragm wall, a first bottom plate is arranged at the bottom of the side wall, and a second bottom plate is arranged at the bottom of the first bottom plate. A plurality of groups of waist beams are arranged above the side walls, and a plurality of diagonal beams are arranged between the waist beams; the first bottom plate is provided with an inverted wall vertical shaft extending downwards, the inverted wall vertical shaft is composed of an inverted well wall and a second bottom plate, and the inverted well wall is communicated with an underlying tunnel. According to the utility model, the requirements of shield launching, shield tunnel construction and underlying mining method tunnel construction can be simultaneously met, the total construction cost is lower, and the construction management is convenient.

Description

Technical Field

[0001] This utility model relates to the field of tunnel construction technology in water conservancy and hydropower engineering, and in particular to a shield launching shaft structure that also serves as a tunnel construction passage in mining methods. Background Technology

[0002] With the rapid development of the social economy, the number of water diversion tunnel projects in my country is gradually increasing. Under some complex geological conditions, mining methods and shield tunneling methods can be used simultaneously. Specifically, in soft soil or soft rock conditions, shield tunneling is used to achieve continuous excavation; when it is necessary to pass through hard rock sections or other conditions unfavorable to shield tunneling, mining methods are used to excavate a section of the tunnel, thereby improving the overall construction efficiency. However, sometimes, in order to avoid buildings or unfavorable geological zones, it is necessary to lay part of the mining method tunnel underground. In this case, it is necessary to consider how to set up construction shafts to smoothly transport equipment, materials, and excavated soil while meeting the requirements of construction economy. Summary of the Invention

[0003] To address the aforementioned problems, this utility model provides a shield tunneling starting shaft structure that is low-investment, safe, and reliable, and can also serve as a tunneling access point in mining operations. Specifically, the following technical solution can be adopted:

[0004] The shield launching shaft structure of this utility model, which also serves as a tunnel construction passage in the mining method, includes a diaphragm wall shaft connected to the shield tunnel. The diaphragm wall shaft includes a diaphragm wall forming a quadrilateral shape. The lower part of the diaphragm wall is provided with a side wall, and the bottom of the side wall is provided with a first base plate. Multiple sets of waist beams are provided above the side wall, and multiple supporting beams are provided between the waist beams. A downwardly extending inverted wall shaft is provided on the first base plate. The inverted wall shaft is composed of an inverted shaft wall and a second base plate. The inverted shaft wall is connected to the tunnel below.

[0005] The diaphragm wall shaft is a rectangular structure that meets the requirements for the assembly and launch of the tunnel boring machine.

[0006] The bottom of the diaphragm wall extends below the first base slab and is located above the lower tunnel.

[0007] The underground continuous wall and side wall have a first opening that connects to the shield tunnel.

[0008] Both the waist beam and the supporting beam are located above the shield tunnel.

[0009] The ends of the support beams are provided with reinforcing ribs that connect to the waist beams.

[0010] The top of the inverted well wall is provided with an outwardly turned-up edge structure that is connected to the first bottom plate, and the inverted well wall is connected to the lower tunnel through a second opening.

[0011] The cross-section of the inverted wall shaft is circular.

[0012] The lower tunnel is a tunnel constructed using the mining method.

[0013] This utility model provides a shield tunneling launching shaft structure that also serves as a passageway for mining tunnel construction. It employs a diaphragm wall shaft to meet the requirements of both shield launching and shield tunnel construction. Simultaneously, an inverted wall shaft, connected to the diaphragm wall shaft, is constructed below it to accommodate the needs of underground mining tunnel construction. The inverted wall shaft extends downwards from the base of the diaphragm wall shaft, reducing both the overall footprint and the total excavation work, thus lowering overall construction costs. Furthermore, the inverted wall shaft and the diaphragm wall shaft can share muck removal and hoisting equipment, further reducing project investment and facilitating construction management. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model.

[0015] Figure 2 yes Figure 1 AA section view.

[0016] Figure 3 yes Figure 1 BB cross-section diagram. Detailed Implementation

[0017] The embodiments of this utility model will be described in detail below with reference to the accompanying drawings. These embodiments are implemented based on the technical solution of this utility model and provide detailed implementation methods and specific operation processes. However, the protection scope of this utility model is not limited to the following embodiments.

[0018] like Figure 1-3As shown, the shield tunneling launching shaft structure of this utility model, which also serves as a tunneling access point for mining methods, includes a diaphragm wall shaft 2 connected to the shield tunnel 1. To meet the requirements for shield machine assembly and launching, as well as the needs for muck removal and material transportation, the diaphragm wall shaft 2 adopts a rectangular structure. The diaphragm wall shaft 2 is excavated by an excavator. To maintain structural stability, a quadrilateral underground continuous wall 3 is installed along the shaft wall, extending below the bottom plate (i.e., below the first bottom plate 4) of the diaphragm wall shaft 2. A side wall 5 is installed near the bottom of the inner side of the underground continuous wall 3. The bottom of the side wall 5 is connected to the first bottom plate 4. Multiple sets of waist beams 6 are installed above the side wall 5, and multiple supporting beams 7 are installed between the waist beams 6. In this embodiment, the waist beams 6 and the supporting beams 7 are both located above the shield tunnel 1. The supporting beams 7 are arranged in three layers from top to bottom, with two beams arranged side-by-side in each layer, dividing the diaphragm wall shaft 2 into three hoisting openings. Each end of the supporting beam 7 is provided with a reinforcing rib 8 connected to the waist beam 6, thereby further improving the stability of the overall structure. The aforementioned diaphragm wall 3 and side wall 5 are provided with a first opening 9 for connecting the shield tunnel 1.

[0019] The mining method construction tunnel (i.e., the lower tunnel 10) is located below the diaphragm wall 3 of the diaphragm wall shaft 2. An inverted wall shaft 11, used to meet the needs of slag removal and material transportation during the construction of the lower tunnel 10, is located below the diaphragm wall shaft 2. Specifically, a circular hole is opened in the first bottom plate 4 of the diaphragm wall shaft 2 for excavating and constructing the inverted wall shaft 11. The inverted wall shaft 11 consists of an inverted shaft wall 12 and a second bottom plate 13. The second bottom plate 13 is circular and located below the lower tunnel 10. The top of the inverted shaft wall 12 is provided with an outwardly flanged structure 14 that connects to the first bottom plate 4. A second opening 15 is opened in the inverted shaft wall 12 near the second bottom plate 13, and the second opening 15 is used to connect to the lower tunnel 10.

[0020] The diaphragm wall shaft 2 mentioned above should be designed with specific dimensions according to the construction needs of the shield tunnel 1, so as to meet the needs of shield launching and the operation needs of construction materials and equipment in the later stage; while the inverted wall shaft 11 is used to meet the construction needs of the underpass mining method tunnel.

[0021] This utility model can simultaneously meet the needs of shield tunneling initiation, shield tunnel construction passage, and underground mining method tunnel construction passage. It is beneficial to reduce project investment and facilitate construction management. It is especially suitable for shallow-buried soil tunnel construction shafts that involve both shield tunneling and mining methods.

[0022] It should be noted that in the description of this utility model, terms such as "front", "rear", "left", "right", "vertical", "horizontal", "inner", and "outer" indicating orientation or positional relationship are 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.

Claims

1. A shield tunneling starting shaft structure that also serves as a passageway for mining tunnel construction, characterized in that: The system includes a diaphragm wall shaft connected to the shield tunnel. The diaphragm wall shaft comprises a diaphragm wall forming a quadrilateral shape. The lower part of the diaphragm wall is provided with a side wall. The bottom of the side wall is provided with a first base plate. Multiple sets of waist beams are provided above the side wall. Multiple bracing beams are provided between the waist beams. An inverted wall shaft extending downward is provided on the first base plate. The inverted wall shaft is composed of an inverted shaft wall and a second base plate. The inverted shaft wall is connected to the tunnel below.

2. The shield launching shaft structure that also serves as a tunnel passage in mining operations, as described in claim 1, is characterized in that: The diaphragm wall shaft is a rectangular structure that meets the requirements for the assembly and launch of the tunnel boring machine.

3. The shield launching shaft structure that also serves as a tunnel passage in mining operations, as described in claim 1, is characterized in that: The bottom of the diaphragm wall extends below the first base slab and is located above the lower tunnel.

4. The shield launching shaft structure that also serves as a tunnel passage in mining operations, as described in claim 1, is characterized in that: The underground continuous wall and side wall have a first opening that connects to the shield tunnel.

5. The shield launching shaft structure that also serves as a tunnel passage in mining operations, as described in claim 1, is characterized in that: Both the waist beam and the supporting beam are located above the shield tunnel.

6. The shield launching shaft structure that also serves as a tunnel passage in mining operations, as described in claim 1, is characterized in that: The ends of the support beams are provided with reinforcing ribs that connect to the waist beams.

7. The shield launching shaft structure that also serves as a tunnel passage in mining operations, as described in claim 1, is characterized in that: The top of the inverted well wall is provided with an outwardly turned-up edge structure that is connected to the first bottom plate, and the inverted well wall is connected to the lower tunnel through a second opening.

8. The shield launching shaft structure that also serves as a tunnel passage in mining operations, as described in claim 1, is characterized in that: The cross-section of the inverted wall shaft is circular.

9. The shield launching shaft structure that also serves as a tunnel passage in mining operations, as described in claim 1, is characterized in that: The lower tunnel is a tunnel constructed using the mining method.

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