Structure of horse-shoe shaped large-section gas storage chamber

Abstract

The utility model discloses a structure of horseshoe shape large section gas storage chamber, its horseshoe shape large section gas storage chamber structure form mainly includes chamber circular gas storage cavity, sealing layer, the concrete second lining of the outer edge of the inner edge being circular with the chamber outer contour one, concrete primary support layer and the anchor rod arranged at two bottom corners. The utility model uses bottom corner anchor rod to release the stress that chamber has concentrated in the early excavation stage bottom corner in advance, and can control the surrounding rock sliding that chamber bottom corner produces in the gas storage stage, improves the shear resistance of whole, controls the uniform deformation of surrounding rock, reduces stress concentration. Use the irregular lining to make the chamber inner contour present the circular section of uniform stress, further reduce stress concentration. The combination of both complements each other, improves the gas storage capacity of horseshoe shape chamber together, guarantees the stability and the sealing property of chamber.

Description

Technical Field

[0001] This utility model relates to the field of energy storage equipment, specifically to the structure of a horseshoe-shaped large-section gas storage chamber. Background Technology

[0002] Currently, large-scale energy storage technologies mainly include pumped hydro storage, battery energy storage, and compressed air energy storage. Compared with other large-scale energy storage technologies, compressed air energy storage has advantages such as long lifespan, high safety, relatively short construction period, and flexible site selection. However, the construction cost of underground gas storage structures is the decisive factor in whether large-scale compressed air energy storage power plants have economic value and promotion prospects. However, building an underground artificial chamber as a compressed air energy storage facility requires certain economic and time costs, which will reduce the economic benefits of compressed air energy storage power plants.

[0003] Therefore, converting existing abandoned underground spaces such as mine shafts and storage facilities into underground compressed air energy storage chambers is an effective measure to reduce the operation and maintenance costs of compressed air energy storage power stations. It will also significantly shorten the construction cycle, allow for earlier commissioning, and generate economic benefits.

[0004] However, most of the existing abandoned mine shafts are horseshoe-shaped chambers. Horseshoe-shaped chambers are prone to stress concentration in terms of structural stress, which leads to limited pressure bearing capacity and problems such as instability and insufficient sealing. Therefore, there is an urgent need for a structural form that can ensure the stability and sealing of large-section horseshoe-shaped chambers while withstanding high internal pressure. Utility Model Content

[0005] In view of the above-mentioned shortcomings in the prior art, this utility model provides a horseshoe-shaped large-section gas storage chamber structure.

[0006] To achieve the aforementioned objectives, the technical solution adopted by this utility model is as follows: A horseshoe-shaped large-section gas storage chamber structure includes: a chamber body with a horseshoe-shaped cross-section, a sealing layer disposed inside the chamber body, a secondary concrete lining layer disposed outside the sealing layer, a primary concrete support layer disposed outside the secondary concrete lining layer, and anchor bolts disposed at the two bottom corners of the chamber body; wherein the sealing layer, the secondary concrete lining layer, and the primary concrete support layer are arranged sequentially from the inside to the outside and are tightly fitted together.

[0007] Furthermore, the sealing layer is tightly fitted with the secondary concrete lining layer, the secondary concrete lining layer is tightly fitted with the primary concrete support layer, and the primary concrete support layer is tightly fitted with the outline of the chamber body, without any gaps.

[0008] Furthermore, the concrete grade and strength used in the secondary concrete lining layer are greater than those in the primary concrete support layer.

[0009] Furthermore, the anchor rods are arranged at the two bottom corners of the chamber body, within a range of no more than 1 meter centered on the bottom corners, and one end of the anchor rod penetrates more than 2 meters into the surrounding rock, while the other end penetrates into the primary concrete support layer.

[0010] Furthermore, the inner contour of the secondary concrete lining layer is a circular cross-section.

[0011] This utility model has the following beneficial effects: 1. Using bottom corner anchors to pre-release the concentrated stress at the bottom corner of the chamber during the early excavation stage can also control the surrounding rock slippage at the bottom corner of the chamber during the gas storage stage, improve the overall shear resistance, control the uniform deformation of the surrounding rock, and reduce stress concentration.

[0012] 2. The use of irregular lining creates a circular cross-section with uniform stress distribution within the chamber, further reducing stress concentration. The two complement each other, working together to improve the gas storage capacity of the horseshoe-shaped chamber and ensure its stability and sealing. Attached Figure Description

[0013] Figure 1 The horseshoe-shaped chamber is described as a structural form of a horseshoe-shaped large-section gas storage chamber.

[0014] Figure 2 This is a cross-sectional view of a horseshoe-shaped gas storage chamber.

[0015] Figure 3 This is a partially enlarged schematic diagram of the structure of a horseshoe-shaped large-section gas storage chamber. Detailed Implementation

[0016] The specific embodiments of this utility model are described below to enable those skilled in the art to understand this utility model. However, it should be understood that this utility model is not limited to the scope of the specific embodiments. For those skilled in the art, as long as various changes are within the spirit and scope of this utility model as defined and determined by the appended claims, these changes are obvious. All utility model creations utilizing the concept of this utility model are within the scope of protection.

[0017] The cross-section of the underground chamber described in this utility model is as follows: Figure 1 As shown, this is a horseshoe-shaped chamber, located within rock at a certain depth. The chamber's cross-sectional characteristics include two base angles forming right angles or significant angles.

[0018] The horseshoe-shaped cross-section gas storage chamber structure of this utility model mainly includes, from the inside out, a circular gas storage cavity, a sealing layer, a concrete secondary lining with an inner edge that is circular and an outer edge that is consistent with the outer contour of the chamber, a concrete primary support layer, and anchor rods arranged at the two bottom corners.

[0019] The sealing layer fits tightly and seamlessly with the secondary concrete lining, the secondary concrete lining and the primary concrete support layer, and the primary concrete support layer and the original outline of the chamber.

[0020] The concrete grade and strength used in the secondary concrete lining are greater than those of the primary concrete support layer.

[0021] The bottom corner anchors are arranged at the two bottom corners of the chamber, with the bottom corner of the chamber as the center, within a range of no more than 1m. One end of the bottom corner anchor is required to penetrate more than 2m into the rock mass, and the other end is required to penetrate into the initial concrete support layer.

[0022] In this embodiment, as Figure 2 and Figure 3 As shown, in the horseshoe-shaped chamber 1 within the surrounding rock 2, a concrete primary support layer 3 and bottom corner anchors 5 are applied on its foundation. One end of the bottom corner anchor 5 penetrates more than 2m into the surrounding rock, and the other end penetrates into the concrete primary support layer 3. A concrete secondary lining 4 is then applied, specifically, the strength of the concrete secondary lining 4 is higher than that of the concrete primary support layer 3, and the two are tightly bonded. The outer contour of the concrete secondary lining 4 is consistent with the contour of the chamber, and the inner contour is circular. A sealing layer 6 is applied to the inner contour of the concrete secondary lining, and the two are tightly bonded.

[0023] This utility model uses specific embodiments to illustrate the principle and implementation of the utility model. The above description of the embodiments is only for the purpose of helping to understand the method and core idea of ​​the utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​the utility model. Therefore, the content of this specification should not be construed as a limitation of the utility model.

[0024] Those skilled in the art will recognize that the embodiments described herein are intended to help the reader understand the principles of this invention, and should be understood that the scope of protection of this invention is not limited to such specific statements and embodiments. Those skilled in the art can make various other specific modifications and combinations based on these technical teachings disclosed in this invention without departing from the essence of this invention, and these modifications and combinations are still within the scope of protection of this invention.

Claims

1. A structure for a horseshoe-shaped large-section gas storage chamber, characterized in that, Includes: a horseshoe-shaped chamber body embedded in the surrounding rock (2), a sealing layer (6) set inside the chamber body, a secondary concrete lining layer (4) set outside the sealing layer (6), a primary concrete support layer (3) set outside the secondary concrete lining layer (4), and anchor rods (5) set at the two bottom corners of the chamber body.

2. The structure of a horseshoe-shaped large-section gas storage chamber according to claim 1, characterized in that, The sealing layer (6) is tightly fitted and seamlessly connected with the secondary concrete lining layer (4), the secondary concrete lining layer (4) and the primary concrete support layer (3), and the primary concrete support layer (3) and the outline of the chamber body (1).

3. The structure of a horseshoe-shaped large-section gas storage chamber according to claim 1, characterized in that, The concrete grade and strength used in the secondary concrete lining layer (4) are greater than those of the primary concrete support layer (3).

4. The structure of a horseshoe-shaped large-section gas storage chamber according to claim 1, characterized in that, The anchor bolts are arranged at the two bottom corners of the chamber body, within a range of no more than 1 meter centered on the bottom corners, with one end of the anchor bolt penetrating more than 2 meters into the surrounding rock and the other end penetrating into the primary concrete support layer.

5. The structure of a horseshoe-shaped large-section gas storage chamber according to claim 1, characterized in that, The inner contour of the secondary concrete lining layer (4) is a circular cross section.

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