Vertical shaft structure for meeting construction of tunnels with different elevations

Abstract

The utility model discloses a vertical shaft structure for satisfying different elevation tunnel construction, which comprises a vertical shaft main body extending downwards from the ground, the vertical shaft main body is divided into a deep well and a shallow well which are arranged in parallel through a diagonal bracing plate, the deep well is arranged close to one side of a low tunnel, and the shallow well is arranged close to one side of a high tunnel. The side wall of the deep well is provided with a first open hole communicated and connected with the low tunnel, and the side wall of the shallow well is provided with a second open hole communicated with the high tunnel. According to the utility model, the deep well and the shallow well are arranged in parallel, so that the investment of vertical well excavation is reduced; the deep well is connected with the low tunnel, the shallow well is connected with the high tunnel, the requirements for daily deslagging and material and equipment transportation of the tunnel can be met, meanwhile, due to the fact that the deep well and the shallow well are adjacently arranged, deslagging equipment, hoisting equipment and the like can be jointly used, project construction investment is further reduced, and construction management is facilitated.

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 vertical shaft structure for tunnel construction at different elevations. Background Technology

[0002] With the rapid development of the social economy, the number of water diversion tunnel projects in my country has gradually increased. To avoid structures or unfavorable geological zones, some tunnels need to be lowered or raised, resulting in abrupt changes in tunnel elevation and the creation of tunnels at different elevations. Since these tunnels are buried underground, construction adits and shafts are required for construction. For tunnels at different elevations, multiple construction adits or shafts are typically needed to meet the needs of muck removal, material and equipment transportation. However, this multi-adits / shaft construction method not only involves significant investment but also further increases project costs due to the need for multiple sets of muck removal equipment. Summary of the Invention

[0003] To address the aforementioned problems, this utility model provides a shaft structure with a relatively low investment amount for tunnel construction at different elevations. Specifically, the following technical solution can be adopted:

[0004] The present invention describes a shaft structure for accommodating tunnel construction at different elevations, comprising a shaft body extending downwards from the ground. The shaft body is divided into a deep shaft and a shallow shaft arranged in parallel by a support plate. The deep shaft is located closer to the lower tunnel, and the shallow shaft is located closer to the higher tunnel. The sidewall of the deep shaft has a first opening that is connected to the lower tunnel, and the sidewall of the shallow shaft has a second opening that is connected to the higher tunnel.

[0005] The bottom of the deep well is a first bottom plate, and the bottom of the shallow well is a second bottom plate. The first bottom plate is set below the low tunnel elevation, and the second bottom plate is set below the high tunnel elevation, and the second bottom plate is set above the low tunnel elevation.

[0006] The supporting plate is a flat plate structure, with its bottom set on the second base plate and its top flush with the top surface of the shaft body.

[0007] The supporting plate is vertically downward along the symmetrical center of the top surface of the shaft body, and the bottom of the supporting plate is located at the inner edge of the second base plate.

[0008] The deep well below the supporting plate has a cylindrical structure.

[0009] The vertical shaft structure provided by this utility model for tunnel construction at different elevations adopts a parallel arrangement of deep and shallow shafts to reduce the investment in vertical shaft excavation. The deep shaft is connected to the low-lying tunnel, and the shallow shaft is connected to the high-lying tunnel, which can meet the daily needs of tunnel muck removal, material and equipment transportation. At the same time, since the deep and shallow shafts are set up adjacent to each other, muck removal equipment, hoisting equipment, etc. can be used together, further reducing the project construction investment and facilitating construction management. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the structure of this utility model.

[0011] Figure 2 yes Figure 1 AA section view.

[0012] Figure 3 yes Figure 1 BB cross-section diagram. Detailed Implementation

[0013] 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.

[0014] like Figure 1-3 As shown, the vertical shaft structure of this utility model for accommodating tunnel construction at different elevations includes a vertical shaft main body extending downward from the ground. The vertical shaft main body is divided into a deep shaft 1 and a shallow shaft 2 arranged in parallel. The deep shaft 1 is located on the side closer to the low tunnel 3, and the shallow shaft 2 is located on the side closer to the high tunnel 4. The side wall of the deep shaft 1 is provided with a first opening 5 that is connected to the low tunnel 3, and the side wall of the shallow shaft 2 is provided with a second opening 6 that is connected to the high tunnel 4.

[0015] The aforementioned deep well 1 and shallow well 2 can share a set of hoisting and muck removal equipment. The daily muck removal, material and equipment transportation of the low tunnel 3 and the daily muck removal, material and equipment transportation of the high tunnel 4 can be carried out alternately, which not only reduces equipment investment but also ensures the smooth progress of construction.

[0016] The bottom of the deep shaft 1 is a first base plate 7, and the bottom of the shallow shaft 2 is a second base plate 8. The first base plate 7 is set below the elevation of the low tunnel 3, and the second base plate 8 is set below the elevation of the high tunnel 4, but higher than the elevation of the low tunnel 3. The main body of the shaft is excavated in sections above the second base plate 8. After each certain depth of excavation, the support plate 9 is constructed until the elevation of the second base plate 8 is reached. At this point, the bottom of the support plate 9 is set on the second base plate 8. Then, excavation continues downward on one side of the support plate 9 until the elevation of the first base plate 7 is reached. It can be seen that, apart from the difference in excavation elevation, the deep shaft 1 and the shallow shaft 2 are mainly separated by the support plate 9. The support plate 9 is usually a concrete flat plate structure, with its bottom set on the second base plate 8 and its top flush with the top surface of the main shaft. In addition to separating the deep shaft 1 and the shallow shaft 2, it also supports the main shaft, improving the overall stability of the main shaft. In this embodiment, the shaft wall of the main body includes two straight segments of equal length and two symmetrically arranged semi-circular arc segments. The support plate 9 is vertically downward along the center of symmetry of the main body of the shaft, that is, the top is located at the center of the straight segment on the top surface of the main body of the shaft, and the bottom is located at the inner edge of the second base plate 8, thereby symmetrically separating the deep well 1 and the shallow well 2 where the support plate 9 is located. Furthermore, the ends of the support plate 9 are respectively provided with chamfered structures at the connection with the two straight segments of the shaft wall to improve the support performance of the support plate 9. The deep well below the support plate 9 adopts an easy-to-excavate cylindrical structure, which is tangent to the projection of the support plate 9.

[0017] After the main shaft construction is completed, a first opening 5 is made on the side wall of deep shaft 1, and the first opening 5 is connected to the low tunnel 3, so that deep shaft 1 serves as the construction passage for low tunnel 3. A second opening 6 is made on the side wall of shallow shaft 2, and the second opening 6 is connected to the high tunnel 4, so that shallow shaft 2 serves as the construction passage for high tunnel 4.

[0018] This utility model adopts a single vertical shaft to meet the construction needs of tunnels at different elevations. The above-mentioned method of excavating deep and shallow shafts in parallel not only facilitates construction management but also reduces project investment, making it very suitable for the construction of vertical shafts for shallow-buried tunnels with soil at different elevations.

[0019] 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 shaft structure for accommodating tunnel construction at different elevations, characterized in that: The system includes a vertical shaft body extending downward from the ground. The vertical shaft body is divided into a deep shaft and a shallow shaft arranged in parallel by a support plate. The deep shaft is located near the lower tunnel, and the shallow shaft is located near the higher tunnel. The sidewall of the deep shaft is provided with a first opening that is connected to the lower tunnel, and the sidewall of the shallow shaft is provided with a second opening that is connected to the higher tunnel.

2. The shaft structure for tunnel construction at different elevations as described in claim 1, characterized in that: The bottom of the deep well is a first bottom plate, and the bottom of the shallow well is a second bottom plate. The first bottom plate is set below the low tunnel elevation, and the second bottom plate is set below the high tunnel elevation, and the second bottom plate is set above the low tunnel elevation.

3. The shaft structure for tunnel construction at different elevations according to claim 2, characterized in that: The supporting plate is a flat plate structure, with its bottom set on the second base plate and its top flush with the top surface of the shaft body.

4. The shaft structure according to claim 3 for accommodating tunnel construction at different elevations, characterized in that: The supporting plate is vertically downward along the symmetrical center of the top surface of the shaft body, and the bottom of the supporting plate is located at the inner edge of the second base plate.

5. The shaft structure according to claim 3 for accommodating tunnel construction at different elevations, characterized in that: The deep well below the supporting plate has a cylindrical structure.

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