Laminated sealing lining structure, underground garage of compressed air energy storage power station and construction method of underground garage

Abstract

The invention provides a stacked sealing lining structure, a compressed air energy storage power station underground garage and a construction method of the compressed air energy storage power station underground garage, and belongs to the technical field of compressed air energy storage devices. The laminated sealing lining structure comprises frameworks, a plurality of sealing layers and a fastening assembly, a hollowed-out face is formed between the frameworks, the frameworks are matched with the sealing layers, after the sealing layers are arranged on the hollowed-out face of the frameworks, every two adjacent sealing layers in the longitudinal direction are in lap joint through a lap joint strip, the fastening assembly is fixedly arranged on the lap joint strip, and therefore the sealing layers are connected into a whole. The free edges of the sealing layers are filled in the sealing layer clamping grooves, so that every two adjacent sealing layers in the warp direction are in lap joint through the lap joint strips, the lap joint strips are fixed through the fastening assemblies, and therefore the sealing layers are prevented from shifting or disengaging, and air tightness is guaranteed. The underground garage comprises a concrete lining layer and the sealing lining structure. By means of the construction method, the garage can be obtained. The sealing structure is easy and convenient to construct, high in working efficiency, excellent in sealing performance and low in manufacturing cost.

Description

Technical Field

[0001] This invention relates to the field of compressed air energy storage technology, and in particular to a layered sealed inner lining structure, an underground chamber for compressed air energy storage power stations, and a construction method thereof. Background Technology

[0002] Compressed air energy storage (CASS) technology is an environmentally friendly, efficient, large-capacity, long-term physical energy storage technology. It does not require fossil fuels and emits no harmful substances, making it environmentally friendly. This technology significantly improves the spatiotemporal structure of power grid generation and consumption, enhances the grid's peak-shaving capacity, and solves the intermittency problem of renewable energy. In my country, this technology is being widely promoted and applied. However, the sealing structure of underground tunnels in existing CASS power plants is often not ideal, and construction efficiency is low. Summary of the Invention

[0003] In view of this, the present invention provides a layered sealed inner lining structure, an underground silo for compressed air energy storage power stations, and a construction method thereof, which is simple to construct, highly efficient, has excellent sealing performance, and is inexpensive, thus making it more suitable for practical use.

[0004] To achieve the first objective mentioned above, the technical solution of the layered sealing liner structure provided by the present invention is as follows:

[0005] The layered sealing liner structure provided by the present invention includes a skeleton (2), multiple sealing layers (5), and fastening components.

[0006] The skeleton (2) forms a hollow surface between its members.

[0007] The frame (2) is adapted to the sealing layer (5). When the sealing layer (5) is installed on the hollow surface of the frame (2), it overlaps with the adjacent two sealing layers (5) through the overlap strip. The fastening component is fixedly installed on the overlap strip, so that the multiple sealing layers (5) are connected into one.

[0008] The layered sealing liner structure provided by this invention can also be further implemented using the following technical measures.

[0009] Preferably, the skeleton (2) includes a warp skeleton (21) and a weft skeleton (22).

[0010] The warp skeleton (21) and weft skeleton (22) interweave to form a cylindrical shape, and the hollow is formed between two adjacent warp skeletons (21) and two adjacent weft skeletons (22).

[0011] Preferably, the layered sealing liner structure further includes an arc-shaped skeleton (23).

[0012] The arc-shaped frame (23) is the warp frame of the latitudinal frame (22) near both ends of the frame (2).

[0013] The diameter of the axial latitudinal skeleton (22) near the end of the cylindrical structure gradually decreases.

[0014] One end of the arc-shaped frame (23) is connected to the larger diameter latitudinal frame (22), and the other end of the arc-shaped frame (23) is connected to the smaller diameter latitudinal frame (22), so that the diameter of the cylindrical shape gradually shrinks at both ends of the axial direction to form a dome.

[0015] Preferably, the fastening assembly includes a first connector (10), a second connector (21a), a fastening bolt (8), and a fastening nut (11).

[0016] The concrete lining layer (1) has a groove (9) in the radial direction.

[0017] The first connector (10) is accommodated within the groove (9), and the first connector (10) also has a first receiving groove on its inner side.

[0018] The first sealing layer (5a) is provided with a first overlapping strip (3a) along the warp direction, and the second sealing layer (5b) is provided with a second overlapping strip (4b) along the warp direction. The first overlapping strip (3a) and the second overlapping strip (4b) are a type of overlapping strip (3), wherein the first type of overlapping strip (3) is an overlapping strip extending toward the outside of the sealing layer (5). After the first overlapping strip (3a) and the second overlapping strip (4b) overlap, they are accommodated in the first receiving groove.

[0019] The second connector (21a) is embedded between the overlapping first sealing layer (5a) and second sealing layer (5b).

[0020] The fastening bolt (8) passes through the second connector (21a), the first lap strip (3a), and the second lap strip (4b) and ends inside the first connector (10); the fastening bolt (11) is screwed to the free end of the fastening bolt (8) located outside the second connector (21a).

[0021] Preferably, the first connector (10) has a first edge of a first predetermined width on both sides of the first receiving groove, such that the first sealing layer (5a) and the second sealing layer (5b) are at least partially on the first edge.

[0022] Preferably, the fastening assembly includes a third connector (21b), a fastening bolt (8), and a fastening nut (11).

[0023] The third sealing layer (5c) is provided with a third overlapping strip (6c) along the warp direction, and the fourth sealing layer (5d) is provided with a fourth overlapping strip (7d) along the warp direction. The third overlapping strip (6c) and the fourth overlapping strip (6d) are a second type of overlapping strip (4), wherein the second type of overlapping strip (4) is an overlapping strip extending toward the inside of the sealing layer (5).

[0024] The third connector (21b) forms a second receiving groove facing the concrete lining layer 1.

[0025] After the third overlapping strip (6c) and the fourth overlapping strip (7d) are joined together, they are accommodated in the second accommodating groove.

[0026] The fastening bolt (8) passes through the third connector (21b), the third lap strip (6c), and the fourth lap strip (7d) and terminates within the concrete lining layer (1); the fastening bolt (11) is screwed to the free end of the fastening bolt (8) located outside the third connector (21b).

[0027] Preferably, the third connector (21b) has a second edge with a second set width on both sides of the second receiving groove, such that the third sealing layer (5c) and the fourth sealing layer (5d) are at least partially pressed between the first edge and the concrete lining layer (1).

[0028] To achieve the second objective mentioned above, the technical solution for the underground tunnel of the compressed air energy storage power station provided by this invention is as follows:

[0029] The compressed air energy storage power station underground cavern provided by the present invention includes a concrete lining layer (1) and a layered sealed inner lining structure provided by the present invention.

[0030] The layered sealed inner lining structure is fixedly installed on the inner wall of the concrete lining layer (1).

[0031] To achieve the third objective mentioned above, the technical solution for the construction method of the underground cavern of the compressed air energy storage power station provided by this invention is as follows:

[0032] The construction method for the underground chamber of the compressed air energy storage power station provided by this invention includes the following steps:

[0033] The frame (2) is arranged on the inner wall of the underground cavern of the compressed air energy storage power station, so that a hollow surface is formed between the frames (2);

[0034] The sealing layer (5) is spread out in the hollow surface, and the free edge of the sealing layer (5) is filled in the sealing layer locking groove, so that multiple sealing layers (5) are connected into one to form the stacked sealing liner structure;

[0035] The layered sealed inner lining structure is fixedly installed on the inner wall of the concrete lining layer (1).

[0036] The construction method for the underground cavern of the compressed air energy storage power station provided by this invention can be further implemented by the following technical measures.

[0037] Preferably, the construction method for the underground chamber of the compressed air energy storage power station further includes the following steps:

[0038] An air storage test was conducted on the underground chamber of the compressed air energy storage power station to determine the sealing performance of the underground chamber;

[0039] Real-time monitoring is conducted to identify potential air leakage points in the underground chamber of the compressed air energy storage power station.

[0040] Preferably, in the process of real-time monitoring of possible air leakage points in the underground chamber of the compressed air energy storage power station, the possible air leakage points include: the connection between the sealing layer (5) and the fixed base plate (3), the connection between the fixed base plate (3) and the frame (2), the connection between the fixed base plate (3) and the concrete lining layer (1), and one or more locations within the sealing layer (5) itself.

[0041] Preferably, real-time monitoring of potential gas leakage points in the underground cavern specifically includes the following steps:

[0042] Gas flow monitoring instruments are installed at possible leak points in the underground chamber of the compressed air energy storage power station, and location tags are set for each gas flow monitoring instrument;

[0043] An alarm threshold is set for the gas flow monitoring instrument based on its location.

[0044] When an abnormal gas flow alarm is detected, the location of the leak in the underground chamber of the compressed air energy storage power station is determined based on the location label of the gas flow monitoring instrument that triggered the alarm.

[0045] The layered sealing lining structure provided by this invention utilizes the sealing layer retaining groove formed by the skeleton 2 to connect the sealing layer 5. The free edges of the sealing layer 5 are filled into the retaining groove, allowing two radially adjacent sealing layers 5 to overlap via an overlap strip, which is then fixed using fastening components. This prevents the sealing layer 5 from shifting or detaching, ensuring airtightness. Therefore, when formed inside the concrete lining layer 1 of the underground chamber of a compressed air energy storage power station, its construction period is shorter and the cost is lower than that of welded steel plates. It possesses excellent sealing performance, and its components are easy to replace and maintain. While ensuring tightness, its airtightness meets usage requirements. Furthermore, the sealing layer 5 has a short construction period, and its components can be prefabricated. Compared to the disadvantages of traditional steel plate linings requiring on-site welding, it saves considerable construction time and reduces costs. During maintenance, damaged areas can be directly replaced. Attached Figure Description

[0046] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0047] Appendix Figure 1 An axial cross-sectional view of the internal structure of the underground chamber of a stacked compressed air energy storage power station provided in an embodiment of the present invention;

[0048] Appendix Figure 2 A partial axial cross-sectional view of the internal structure of the underground chamber of the stacked compressed air energy storage power station provided in an embodiment of the present invention;

[0049] Appendix Figure 3 This is a partial cross-sectional three-dimensional structural schematic diagram of the underground cavern of the stacked compressed air energy storage power station provided in Embodiment 1 of the present invention;

[0050] Appendix Figure 4 This is a schematic diagram showing the connection relationship between the first sealing layer 5a and the second sealing layer 5b and the concrete lining layer 1 in the underground cavern of the stacked compressed air energy storage power station provided in Embodiment 1 of the present invention.

[0051] Appendix Figure 5 A three-dimensional structural diagram of the sealing layer 5 with a first type of overlapping strip involved in the underground cavern of the stacked compressed air energy storage power station provided in Embodiment 1 of the present invention;

[0052] Appendix Figure 6 This is a partial cross-sectional three-dimensional structural diagram of the underground chamber of the stacked compressed air energy storage power station provided in Embodiment 2 of the present invention;

[0053] Appendix Figure 7This is a schematic diagram showing the connection relationship between the third sealing layer 5c and the fourth sealing layer 5d and the concrete lining layer 1 in the underground cavern of the stacked compressed air energy storage power station provided in Embodiment 2 of the present invention.

[0054] Appendix Figure 8 This is a three-dimensional structural diagram of the sealing layer 5 with a second type of overlapping strip involved in the underground cavern of the stacked compressed air energy storage power station provided in Embodiment 2 of the present invention.

[0055] Explanation of reference numerals in the attached figures:

[0056] 1-Concrete lining layer, 2-Frame, 21-Warp frame, 22-Weft frame, 23-Arc frame, 3, 4-First type of overlap strip, 5-Sealing layer, 6, 7-Second type of overlap strip, 8-Fasting bolt, 9-Groove, 10-First connector, 11-Fasting nut, 21a-Second connector, 21b-Third connector, 3a-First overlap strip, 4b-Second overlap strip, 5a-First sealing layer, 5b-Second sealing layer, 5c-Third sealing layer, 5d-Fourth sealing layer, 6c-Third overlap strip, 7d-Fourth overlap strip. Detailed Implementation

[0057] In view of this, the present invention provides a layered sealed inner lining structure, an underground silo for compressed air energy storage power stations, and a construction method thereof, which is simple to construct, highly efficient, has excellent sealing performance, and is inexpensive, thus making it more suitable for practical use.

[0058] To further illustrate the technical means and effects adopted by the present invention to achieve its intended purpose, the following, in conjunction with the accompanying drawings and preferred embodiments, details the specific implementation, structure, features, and effects of a layered sealed inner lining structure, an underground compressed air energy storage power station, and its construction method according to the present invention. In the following description, different "embodiments" or "embodiments" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics in one or more embodiments can be combined in any suitable form.

[0059] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that there can be three relationships, such as A and / or B. Specifically, it can mean that A and B can be included at the same time, A can exist alone, or B can exist alone, and any of the above three situations can be met.

[0060] Layered sealing liner structure

[0061] See appendix Figure 1 - Appendix Figure 8The layered sealing liner structure provided in this embodiment of the invention includes a skeleton 2, multiple sealing layers 5, and fastening components. A perforated surface is formed between the skeleton 2. The skeleton 2 is adapted to the sealing layers 5. After the sealing layers 5 are installed on the perforated surface of the skeleton 2, they overlap with adjacent sealing layers (5) via an overlap strip. The fastening components are fixedly installed on the overlap strip, thereby connecting the multiple sealing layers (5) into a single unit.

[0062] The layered sealing lining structure provided in this embodiment of the invention can connect the sealing layer 5 using the sealing layer retaining groove formed by the skeleton 2. The free edges of the sealing layer 5 are filled into the retaining groove, allowing two radially adjacent sealing layers 5 to overlap via an overlap strip, which is then fixed using fastening components. This prevents the sealing layer 5 from shifting or coming off, ensuring airtightness. Therefore, when formed inside the concrete lining layer 1 of the underground chamber of a compressed air energy storage power station, its construction period is shorter and the cost is lower than that of welded steel plates. It possesses good sealing performance, and its components are easy to replace and maintain. Under the premise of ensuring tightness, its airtightness meets the usage requirements. Furthermore, the sealing layer 5 has a short construction period, and the components can be prefabricated. Compared to the disadvantage of traditional steel plate lining requiring on-site welding, it can save a lot of construction time and reduce costs. During maintenance, damaged parts can be directly replaced.

[0063] The skeleton 2 includes a warp skeleton 21 and a weft skeleton 22. The warp skeleton 21 and the weft skeleton 22 interweave to form a cylindrical shape, creating openings between adjacent warp skeletons 21 and adjacent weft skeletons 22. In this embodiment, the warp skeleton 21 and the weft skeleton 22 are evenly distributed, thus enabling the isotropic layered sealing liner structure provided by this embodiment of the invention. When prefabricating the sealing layer 5, only a standard prefabricated sealing layer 5 needs to be manufactured to facilitate replacement when components are damaged.

[0064] The stacked sealing liner structure provided in this embodiment of the invention also includes an arc-shaped skeleton 23. The arc-shaped skeleton 23 is the warp skeleton of the weft skeleton 22 near both ends of the skeleton 2. The diameter of the weft skeleton 22 gradually decreases near the ends of the cylindrical structure. One end of the arc-shaped skeleton 23 is connected to the larger diameter weft skeleton 22, and the other end is connected to the smaller diameter weft skeleton 22, causing the diameter of the cylindrical structure to gradually shrink at both ends in the axial direction, forming a dome. In this case, because the stacked sealing liner structure provided in this embodiment of the invention also includes the arc-shaped skeleton 23, a dome can be formed at both ends in the axial direction, thus making the application range of the stacked sealing liner structure provided in this embodiment of the invention wider. In this case, the sealing layer 5 between two adjacent arc-shaped skeletons 23 has different specifications than the sealing layer 5 between the warp skeleton 21 and the weft skeleton 22. Therefore, it is necessary to prefabricate replacement sealing layer 5 components according to the dimensions of the arc-shaped skeleton 23.

[0065] This invention provides two embodiments of a layered sealing liner structure:

[0066] Example 1

[0067] See Appendix Figure 3 Appendix Figure 4 and attached Figure 5 In the layered sealing liner structure provided in Embodiment 1 of the present invention, the fastening assembly includes a first connector 10, a second connector 21a, a fastening bolt 8, and a fastening nut 11. The concrete lining layer 1 has a groove 9 in the radial direction. The first connector 10 is accommodated in the groove 9. The first connector 10 also has a first receiving groove on its inner side. The first sealing layer 5a has a first overlapping strip 3a in the radial direction. The second sealing layer 5b has a second overlapping strip 4b in the radial direction. The first overlapping strip 3a and the second overlapping strip 4b are first type overlapping strips 3. The first type overlapping strip 3 is an overlapping strip extending towards the outside of the sealing layer 5. After the first overlapping strip 3a and the second overlapping strip 4b overlap, they are accommodated in the first receiving groove. The second connector 21a is embedded between the overlapping first sealing layer 5a and the second sealing layer 5b. The fastening bolt 8 passes through the second connector 21a, the first overlapping strip 3a, and the second overlapping strip 4b and ends in the first connector 10. The fastening bolt 11 is screwed to the free end of the fastening bolt 8 located outside the second connector 21a. In this configuration, the first overlapping strip 3a and the second overlapping strip 4b are embedded to form a continuous sealing layer 5 inside the compressed air energy storage underground chamber, which reduces stress concentration and thus improves the service life of the compressed air energy storage power station chamber provided in this embodiment of the invention. However, this requires creating grooves 9 on the inner wall of the concrete lining layer 1, which increases the construction steps of the concrete lining layer 1 itself.

[0068] The first connector 10 has first edges of a first predetermined width on both sides of the first receiving groove, such that the first sealing layer 5a and the second sealing layer 5b are at least partially on the first edges. In this case, since the first connector 10 has first edges of a first predetermined width on both sides of the first receiving groove, the connection stability between the first connector 10 and the first sealing layer 5a and the second sealing layer 5b can be guaranteed.

[0069] Example 2

[0070] See appendix Figure 6 Appendix Figure 7 and attached Figure 8 In the layered sealing lining structure provided in Embodiment 1 of the present invention, the fastening assembly includes a third connector 21b, a fastening bolt 8, and a fastening nut 11. A third overlapping strip 6c is provided along the warp direction in the third sealing layer 5c, and a fourth overlapping strip 7d is provided along the warp direction in the fourth sealing layer 5d. The third overlapping strip 6c and the fourth overlapping strip 6d are a second type of overlapping strip 4, wherein the second type of overlapping strip 4 extends towards the inner side of the sealing layer 5. The third connector 21b forms a second receiving groove towards the concrete lining layer 1. After the third overlapping strip 6c and the fourth overlapping strip 7d overlap, they are received within the second receiving groove. The fastening bolt 8 simultaneously passes through the third connector 21b, the third overlapping strip 6c, and the fourth overlapping strip 7d and terminates within the concrete lining layer 1. The fastening bolt 11 is screwed to the free end of the fastening bolt 8 located outside the third connector 21b. In this case, the third sealing layer 5c and the fourth sealing layer 5d form the third overlapping strip 6c and the fourth overlapping strip 7d on the inner side of the concrete lining layer 1, eliminating the need to open grooves in the concrete lining layer 1. Therefore, the construction scheme for the concrete lining layer 1 itself is simpler. However, in the layered sealing lining structure provided in Embodiment 2 of the present invention, due to the setting of the third connector 21b, the inner wall of the underground cavern of the compressed air energy storage power station provided in Embodiment 2 of the present invention will have an internal protrusion formed by the third connector 21b.

[0071] The third connector 21b has second edges of a second predetermined width on both sides of the second receiving groove, such that the third sealing layer 5c and the fourth sealing layer 5d are at least partially pressed between the first edge and the concrete lining layer 1. In this case, because the third connector 21b has second edges of a second predetermined width on both sides of the second receiving groove, the connection stability of the third sealing layer 5c and the fourth sealing layer 5d can be ensured during pressing.

[0072] Compressed air energy storage power station underground cavern

[0073] The compressed air energy storage power station underground chamber provided by the present invention includes a concrete lining layer 1 and a layered sealed inner lining structure provided by the present invention. The layered sealed inner lining structure is fixedly installed on the inner wall of the concrete lining layer 1.

[0074] The layered sealing lining structure provided in this embodiment of the invention is formed inside the concrete lining layer 1 of the underground chamber of a compressed air energy storage power station. Its construction period is shorter and the cost is lower than that of welded steel plates. It possesses excellent sealing performance, and its components are easy to replace and maintain. While ensuring tightness, its airtightness meets the usage requirements. Furthermore, the sealing layer 5 has a short construction period, and its components can be prefabricated. Compared to the disadvantages of traditional steel plate linings requiring on-site welding, it saves considerable construction time and reduces costs. During maintenance, damaged parts can be directly replaced.

[0075] Construction method of underground cavern for compressed air energy storage power station

[0076] The construction method for the underground chamber of the compressed air energy storage power station provided by this invention includes the following steps:

[0077] Step S1: Install the frame 2 on the inner wall of the underground cavern of the compressed air energy storage power station, so that the frames 2 form a hollow surface;

[0078] Step S2: Spread the sealing layer 5 in the hollow surface, and fill the free edge of the sealing layer 5 into the sealing layer mounting groove, so that multiple sealing layers 5 are connected into one to form a stacked sealing liner structure.

[0079] Step S3: Fix the layered sealed inner lining structure to the inner wall of the concrete lining layer 1.

[0080] The construction method for the underground silo of a compressed air energy storage power station provided in this embodiment of the invention enables the layered sealed lining structure provided in this embodiment to be formed inside the concrete lining layer 1 of the underground silo of the compressed air energy storage power station. Its construction period is shorter and the cost is lower than that of welded steel plates. It possesses excellent sealing performance, and its components are easy to replace and maintain. Under the premise of ensuring tightness, its airtightness meets the usage requirements. Furthermore, the sealing layer 5 has a short construction period, and its components can be prefabricated. Compared with the traditional steel plate lining which requires on-site welding, it can save a lot of construction time and reduce costs. During maintenance, damaged parts can be directly replaced.

[0081] The construction method for the underground cavern of the compressed air energy storage power station also includes the following steps:

[0082] Gas storage tests were conducted on the underground chamber of the compressed air energy storage power station to determine the sealing performance of the underground chamber;

[0083] Real-time monitoring is conducted to identify potential air leakage points in the underground chambers of the compressed air energy storage power station.

[0084] In this situation, by monitoring potential leak points in underground chambers in real time, any leaks can be detected and remedied promptly.

[0085] In the process of real-time monitoring of potential air leakage points in the underground chamber of the compressed air energy storage power station, the potential air leakage points include: the connection between the sealing layer 5 and the fixed base plate 3, the connection between the fixed base plate 3 and the frame 2, the connection between the fixed base plate 3 and the concrete lining layer 1, and one or more locations within the sealing layer 5 itself. In this way, it is possible to accurately monitor potential air leakage points in the underground chamber in real time.

[0086] The real-time monitoring of potential gas leakage points in underground caverns specifically includes the following steps:

[0087] At potential leak points in the underground chamber of the compressed air energy storage power station, gas flow monitoring instruments are installed, and location labels are set for each gas flow monitoring instrument.

[0088] Set alarm thresholds for the gas flow monitoring instrument based on its location;

[0089] When an abnormal gas flow alarm is detected, the location of the leak in the underground chamber of the compressed air energy storage power station is determined based on the location label of the gas flow monitoring instrument that triggered the alarm.

[0090] In this situation, once a potential leak occurs in the underground chamber, the leak location can be accurately determined based on the alarm information and the location label of the gas flow monitoring instrument, allowing for emergency repair measures to be taken.

[0091] Although preferred embodiments of the invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the invention.

[0092] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A layered sealing liner structure, characterized in that, Includes a frame (2), multiple sealing layers (5), and fastening components. The skeleton (2) forms a hollow surface between its members. The frame (2) is adapted to the sealing layer (5). When the sealing layer (5) is installed on the hollow surface of the frame (2), it overlaps with the adjacent two sealing layers (5) through the overlap strip. The fastening component is fixedly installed on the overlap strip, so that the multiple sealing layers (5) are connected into one.

2. The layered sealing liner structure according to claim 1, characterized in that, The skeleton (2) includes a longitudinal skeleton (21) and a latitudinal skeleton (22). The warp skeleton (21) and weft skeleton (22) interweave to form a cylindrical shape, and the hollow is formed between two adjacent warp skeletons (21) and two adjacent weft skeletons (22).

3. The layered sealing liner structure according to claim 2, characterized in that, It also includes an arc-shaped frame (23), The arc-shaped frame (23) is the warp frame of the latitudinal frame (22) near both ends of the frame (2). The diameter of the axial latitudinal skeleton (22) near the end of the cylindrical structure gradually decreases. One end of the arc-shaped frame (23) is connected to the larger diameter latitudinal frame (22), and the other end of the arc-shaped frame (23) is connected to the smaller diameter latitudinal frame (22), so that the diameter of the cylindrical shape gradually shrinks at both ends of the axial direction to form a dome.

4. The layered sealing liner structure according to claim 1, characterized in that, The fastening assembly includes a first connector (10), a second connector (21a), a fastening bolt (8), and a fastening nut (11). The concrete lining layer (1) has a groove (9) in the radial direction. The first connector (10) is accommodated within the groove (9), and the first connector (10) also has a first receiving groove on its inner side. The first sealing layer (5a) is provided with a first overlapping strip (3a) along the warp direction, and the second sealing layer (5b) is provided with a second overlapping strip (4b) along the warp direction. The first overlapping strip (3a) and the second overlapping strip (4b) are a type of overlapping strip (3), wherein the first type of overlapping strip (3) is an overlapping strip extending toward the outside of the sealing layer (5). After the first overlapping strip (3a) and the second overlapping strip (4b) overlap, they are accommodated in the first receiving groove. The second connector (21a) is embedded between the overlapping first sealing layer (5a) and second sealing layer (5b). The fastening bolt (8) passes through the second connector (21a), the first lap strip (3a), and the second lap strip (4b) and ends inside the first connector (10); the fastening bolt (11) is screwed to the free end of the fastening bolt (8) located outside the second connector (21a).

5. The layered sealing liner structure according to claim 4, characterized in that, The first connector (10) has a first edge of a first predetermined width on both sides of the first receiving groove, such that the first sealing layer (5a) and the second sealing layer (5b) are at least partially on the first edge.

6. The layered sealing liner structure according to claim 1, characterized in that, The fastening assembly includes a third connector (21b), a fastening bolt (8), and a fastening nut (11). The third sealing layer (5c) is provided with a third overlapping strip (6c) along the warp direction, and the fourth sealing layer (5d) is provided with a fourth overlapping strip (7d) along the warp direction. The third overlapping strip (6c) and the fourth overlapping strip (6d) are a second type of overlapping strip (4), wherein the second type of overlapping strip (4) is an overlapping strip extending toward the inside of the sealing layer (5). The third connector (21b) forms a second receiving groove facing the concrete lining layer 1. After the third overlapping strip (6c) and the fourth overlapping strip (7d) are joined together, they are accommodated in the second accommodating groove. The fastening bolt (8) passes through the third connector (21b), the third lap strip (6c), and the fourth lap strip (7d) and terminates within the concrete lining layer (1); the fastening bolt (11) is screwed to the free end of the fastening bolt (8) located outside the third connector (21b).

7. The layered sealing liner structure according to claim 6, characterized in that, The third connector (21b) has a second edge with a second set width on both sides of the second receiving groove, such that the third sealing layer (5c) and the fourth sealing layer (5d) are at least partially pressed between the first edge and the concrete lining layer (1).

8. An underground chamber for a compressed air energy storage power station, characterized in that, Includes a concrete lining layer (1) and a layered sealed inner lining structure as described in any of claims 1-7. The layered sealed inner lining structure is fixedly installed on the inner wall of the concrete lining layer (1).

9. The construction method of the underground chamber of the compressed air energy storage power station according to claim 8, characterized in that, Includes the following steps: The frame (2) is arranged on the inner wall of the underground cavern of the compressed air energy storage power station, so that a hollow surface is formed between the frames (2); The sealing layer (5) is spread out in the hollow surface, and the free edge of the sealing layer (5) is filled in the sealing layer locking groove, so that multiple sealing layers (5) are connected into one to form the stacked sealing liner structure; The layered sealed inner lining structure is fixedly installed on the inner wall of the concrete lining layer (1).

10. The construction method for the underground chamber of the compressed air energy storage power station according to claim 9, characterized in that, It also includes the following steps: An air storage test was conducted on the underground chamber of the compressed air energy storage power station to determine the sealing performance of the underground chamber; Real-time monitoring is conducted on potential air leakage points in the underground chamber of the compressed air energy storage power station. Preferably, during the step of real-time monitoring of possible air leakage points in the underground chamber of the compressed air energy storage power station, the possible air leakage points include: the connection between the sealing layer (5) and the fixed base plate (3), the connection between the fixed base plate (3) and the frame (2), the connection between the fixed base plate (3) and the concrete lining layer (1), and one or more of the parts of the sealing layer (5) itself; Preferably, real-time monitoring of potential gas leakage points in the underground cavern specifically includes the following steps: Gas flow monitoring instruments are installed at possible leak points in the underground chamber of the compressed air energy storage power station, and location tags are set for each gas flow monitoring instrument; An alarm threshold is set for the gas flow monitoring instrument based on its location. When an abnormal gas flow alarm is detected, the location of the leak in the underground chamber of the compressed air energy storage power station is determined based on the location label of the gas flow monitoring instrument that triggered the alarm.

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