Compression air energy storage power station underground cavern with compression combined seal inner liner structure and construction method thereof

Abstract

The application provides a compression strip type combined sealing inner lining structure, a compressed air energy storage power station underground cavern and a construction method thereof, and belongs to the technical field of compressed air energy storage devices. The compression strip type combined sealing inner lining structure comprises a framework, a fixed bottom plate and a plurality of sealing layers. The framework forms a hollow surface between the frameworks. A compression strip is arranged at the center of the framework. When the framework is assembled with the fixed bottom plate, the compression strip is centered with the bottom of the fixed bottom plate, a sealing layer clamping groove is formed between the compression strip and the fixed bottom plate, the sealing layers are spread in the hollow surface, and the free edges of the sealing layers are filled in the sealing layer clamping groove, so that the plurality of sealing layers are connected to form the compression strip type combined sealing inner lining structure. The underground cavern comprises a concrete lining layer and the sealing inner lining structure provided by the application, and the sealing inner lining structure is fixedly arranged on the inner wall of the concrete lining layer. The construction method of the underground cavern can obtain the cavern. The construction method is simple, efficient, has excellent sealing performance, and is low in cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of compressed air energy storage devices, in particular to a compression strip type combined sealing lining structure, a compressed air energy storage power station underground cavern and a construction method thereof. BACKGROUND

[0002] The compressed air energy storage technology is an environmentally friendly and efficient large-capacity long-time physical energy storage technology, which does not need to use fossil fuels and does not emit harmful substances, and is therefore friendly to the environment. The technology has a significant improvement effect on the time and space structure of power generation and power consumption of the power grid, and at the same time enhances the peak regulation capacity of the power grid and solves the intermittency problem of renewable energy. In China, this technology is being promoted and applied on a large scale. However, the sealing structure of the compressed air energy storage power station underground cavern in the prior art is usually not ideal in performance, and the construction efficiency is low. SUMMARY

[0003] Therefore, the present application provides a compression strip type combined sealing lining structure, a compressed air energy storage power station underground cavern and a construction method thereof, which are simple to construct, high in work efficiency, excellent in sealing performance and low in cost, and are therefore more suitable for practical use.

[0004] In order to achieve the first purpose, the technical scheme of the compression strip type combined sealing lining structure provided by the present application is as follows:

[0005] The compression strip type combined sealing lining structure provided by the present application comprises a framework (2), a fixed bottom plate (3) and a plurality of sealing layers (5),

[0006] The frameworks (2) form a hollow surface therebetween,

[0007] The framework (2) is provided with a compression strip (4) at the center thereof, and when the framework (2) is assembled with the fixed bottom plate (3), the compression strip (4) is centered with the bottom of the fixed bottom plate (3), and a sealing layer clamping groove is formed between the compression strip (4) and the fixed bottom plate (3),

[0008] The sealing layer (5) is spread in the hollow surface, and the free edge of the sealing layer (5) is stuffed in the sealing layer clamping groove, so that a plurality of the sealing layers (5) are connected to form the compression strip type combined sealing lining structure.

[0009] The compression strip type combined sealing lining structure provided by the present application can further be realized by the following technical measures.

[0010] Preferably, the framework (2) comprises a warp framework (21) and a weft framework (22),

[0011] The warp frames (21) and the weft frames (22) are interwoven to form a cylindrical shape, and the hollows are formed between adjacent two warp frames (21) and adjacent two weft frames (22).

[0012] As a preferred embodiment, the arc-shaped frame (23) is further included.

[0013] The arc-shaped frame (23) is a weft frame (22) near the two ends of the frame (2).

[0014] The diameter of the weft frame (22) near the axial end of the cylindrical shape gradually decreases.

[0015] One end of the arc-shaped frame (23) is connected to the weft frame (22) with a larger diameter, and the other end of the arc-shaped frame (23) is connected to the weft frame (22) with a smaller diameter, so that the diameter of the cylindrical shape gradually decreases at the two axial ends to form a dome.

[0016] As a preferred embodiment,

[0017] From the radial section of the frame (2), the first protruding part of the pressing strip (4) is formed towards the bottom of the fixed bottom plate (3).

[0018] From the radial section of the fixed bottom plate (3), the fixed bottom plate (3) includes a second bottom and two second protruding parts, and the two second protruding parts are respectively fixedly connected to the second bottom through one side thereof.

[0019] So that two sealing layer clamping grooves are respectively formed between the first protruding part and the second protruding part.

[0020] As a preferred embodiment, the pressing strip type combined sealing inner liner structure further includes at least one third protruding part.

[0021] The third protruding part is fixedly connected to the second protruding part, and the protruding direction of the third protruding part is towards the first protruding part, so that the sealing layer clamping groove has at least one detour.

[0022] As a preferred embodiment, the third protruding part adjacent to the bottom of the fixed bottom plate (3) is defined as a first detour protruding part.

[0023] The gap formed between the first detour protruding part and the fixed bottom plate (3) is greater than the thickness of the sealing layer (5).

[0024] As a preferred embodiment, the free edge of the sealing layer (5) is provided with a fourth protruding part, and the third protruding part forms a recess part at a position corresponding to the fourth protruding part, so that a wavy engagement surface is formed between the sealing layer (5) and the recess part.

[0025] As preferred, the pressing strip (4) is formed into a cage structure by interweaving longitudinal ribs and transverse ribs, and a sealing layer clamping groove is formed between the cage structure and the fixed bottom plate (3).

[0026] In order to achieve the second purpose, the underground cavern of the compressed air energy storage power station provided by the application has the following technical solutions:

[0027] The underground cavern of the compressed air energy storage power station provided by the application comprises a concrete lining layer (1) and a pressing strip type combined sealing inner lining structure provided by the application,

[0028] The pressing strip type combined sealing inner lining structure is fixedly arranged on the inner wall of the concrete lining layer (1).

[0029] The underground cavern of the compressed air energy storage power station provided by the application can further achieve the following technical measures.

[0030] As preferred, the underground cavern of the compressed air energy storage power station further comprises a fastener (7),

[0031] The fastener (7) passes through the framework (2) and the fixed bottom plate (3) and is stopped in the concrete lining layer (1).

[0032] As preferred, the fastener (7) is an anchor rod.

[0033] As preferred, the inner wall of the concrete lining layer (1) is provided with a receiving groove,

[0034] The receiving groove is matched with the shape of the fixed bottom plate (3), so that the fixed bottom plate (3) is embedded in the receiving groove.

[0035] In order to achieve the third purpose, the construction method of the underground cavern of the compressed air energy storage power station provided by the application has the following technical solutions:

[0036] The construction method of the underground cavern of the compressed air energy storage power station provided by the application comprises the following steps:

[0037] The fixed bottom plate (3) is arranged on the inner wall of the underground cavern of the compressed air energy storage power station;

[0038] The framework (2) is arranged on the inner wall of the underground cavern of the compressed air energy storage power station, so that the framework (2) and the fixed bottom plate (3) are assembled, a sealing layer clamping groove is formed between the framework (2) and the fixed bottom plate (3), and a hollow surface is formed between the framework (2).

[0039] The sealing layer (5) is spread in the hollowed-out surface, and the free edge of the sealing layer (5) is filled in the sealing layer clamping groove, so that a plurality of sealing layers (5) are connected to form the compression strip type combined sealing inner lining structure.

[0040] The compression strip type combined sealing inner lining structure is fixedly arranged on the inner wall of the concrete lining layer (1).

[0041] The construction method of the compressed air energy storage power station underground cavern provided by the application can also further realize the following technical measures.

[0042] As preferred, the construction method of the compressed air energy storage power station underground cavern further comprises the following steps before the step of arranging the fixed bottom plate (3) on the inner wall of the compressed air energy storage power station underground cavern:

[0043] The accommodation groove corresponding to the fixed bottom plate (3) is excavated on the inner wall of the concrete lining layer (1), and the shape of the accommodation groove is matched with that of the fixed bottom plate (3), so that the fixed bottom plate (3) can be embedded in the accommodation groove.

[0044] As preferred, the construction method of the compressed air energy storage power station underground cavern further comprises the following steps:

[0045] The gas storage test is carried out on the compressed air energy storage power station underground cavern to determine the sealing performance of the underground cavern.

[0046] The possible air leakage points of the compressed air energy storage power station underground cavern are monitored in real time.

[0047] As preferred, during the step of monitoring the possible air leakage points of the compressed air energy storage power station underground cavern in real time, the possible air leakage points include one or more of the following: the connection between the sealing layer (5) and the fixed bottom plate (3), the connection between the fixed bottom plate (3) and the framework (2), the connection between the fixed bottom plate (3) and the concrete lining layer (1), and the part of the sealing layer (5) itself.

[0048] As preferred, monitoring the possible air leakage points of the underground cavern in real time specifically comprises the following steps:

[0049] A gas flow monitoring instrument is arranged at the possible air leakage point of the compressed air energy storage power station underground cavern, and a position label is arranged for each gas flow monitoring instrument.

[0050] An alarm threshold is set for the gas flow monitoring instrument according to the position of the gas flow monitoring instrument.

[0051] When the gas flow abnormality warning occurs, according to the position label of the alarm gas flow monitoring instrument, the air leakage point of the compressed air energy storage power station underground cavern is determined.

[0052] The compression strip type combined sealing inner liner structure provided by the application can connect the sealing layer 5 by using the sealing layer clamping groove formed between the framework 2 and the fixed bottom plate 3 after assembly, wherein the free edge of the sealing layer 5 is filled in the sealing layer clamping groove, so that the sealing layer 5 and the sealing layer clamping groove are embedded, thereby avoiding displacement or dislocation of the sealing layer 5, and ensuring air tightness. Therefore, the sealing layer 5 is formed on the inner side of the concrete lining layer 1 of the compressed air energy storage power station underground cavern, and the construction period is shorter than that of the welded steel plate, the cost is lower, the sealing performance is good, and the parts are easy to replace and maintain. Under the premise of ensuring the fastening, the air tightness can meet the use requirements. In addition, the sealing layer 5 has a short construction period, the components can be prefabricated, and compared with the traditional steel plate lining which needs to be welded on site, a lot of construction period can be saved, and the cost is also lower. When overhauling, the damaged place can be directly replaced. BRIEF DESCRIPTION OF DRAWINGS

[0053] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The detailed description is made with reference to the accompanying drawings.

[0054] ATTACHMENT Figure 1 The internal perspective axial cross-sectional structure diagram of the compressed air energy storage power station underground cavern provided by the embodiment of the application is shown in the figure.

[0055] ATTACHMENT Figure 2 The internal perspective axial cross-sectional structure diagram of the compressed air energy storage power station underground cavern provided by the embodiment of the application is shown in the figure. Figure 1 The local enlarged structure schematic diagram of part A in the figure is shown in the figure.

[0056] ATTACHMENT Figure 3 The internal perspective axial cross-sectional structure diagram of the compressed air energy storage power station underground cavern provided by the embodiment of the application is shown in the figure.

[0057] ATTACHMENT Figure 4 The internal perspective axial cross-sectional structure diagram of the compressed air energy storage power station underground cavern provided by the embodiment of the application is shown in the figure. Figure 3 The local enlarged structure schematic diagram of part B in the figure is shown in the figure.

[0058] ATTACHMENT Figure 5 The internal perspective axial cross-sectional structure diagram of the compressed air energy storage power station underground cavern provided by the embodiment of the application is shown in the figure.

[0059] ATTACHMENT Figure 6 The internal perspective axial cross-sectional structure diagram of the compressed air energy storage power station underground cavern provided by the embodiment of the application is shown in the figure. Figure 5 The local enlarged structure schematic diagram of part C in the figure is shown in the figure.

[0060] ATTACHMENT Figure 7A schematic diagram of the cooperation relationship between the anchor rod and the concrete lining layer in the compressed air energy storage power station underground cavern provided by the embodiment of the present application is shown in the figure.

[0061] The Figure 8 The Figure 7 A partial enlarged structural schematic diagram of the middle D part is shown in the figure.

[0062] The Figure 9 A schematic diagram of the cooperation relationship between the fixed bottom plate and the concrete lining layer in the compressed air energy storage power station underground cavern provided by the embodiment of the present application is shown in the figure.

[0063] The Figure 10 The Figure 9 A partial enlarged structural schematic diagram of the middle E part is shown in the figure.

[0064] The Figure 11 Another perspective partial three-dimensional structural diagram of the compressed air energy storage power station underground cavern provided by the embodiment of the present application is shown in the figure.

[0065] The Figure 12 The Figure 11 A partial enlarged structural schematic diagram of the middle F part is shown in the figure.

[0066] Explanation of the reference signs:

[0067] 1-concrete lining layer, 2-skeleton, 21-longitudinal skeleton, 22-weft skeleton, 23-arc skeleton, 3-fixed bottom plate, 4-compression strip, 5-sealing layer, 6-lock nut, 7-fastener, 8-welding seam. DETAILED DESCRIPTION

[0068] Therefore, the present application provides a compression strip type combined sealing lining structure, a compressed air energy storage power station underground cavern and a construction method thereof, which are simple in construction, high in working efficiency, excellent in sealing performance, low in cost and more suitable for practical use.

[0069] In order to further illustrate the technical means and effects taken by the present application to achieve the predetermined invention purposes, the specific implementation, structure, features and effects of a compression strip type combined sealing lining structure, a compressed air energy storage power station underground cavern and a construction method thereof according to the present application are described in detail as follows in combination with the accompanying drawings and preferred embodiments. In the following description, different "an embodiment" or "embodiments" do not necessarily refer to the same embodiment. In addition, the specific features, structures or characteristics in one or more embodiments can be combined in any suitable form.

[0070] The term "and / or", used herein merely describes an associated relationship, which means that there can be three relationships, for example, A and / or B, which specifically means that A and B can exist simultaneously, A can exist alone, B can exist alone, and any one of the above three cases can exist.

[0071] Compression seal liner structure

[0072] Referring to the drawings Figure 1 -attached Figure 12 The compression strip type combined sealing inner liner structure provided by the embodiment of the present application comprises a framework 2, a fixed bottom plate 3 and a plurality of sealing layers 5. The framework 2 forms a hollow surface therebetween. The framework 2 is provided with a compression strip 4 at the center thereof. When the framework 2 and the fixed bottom plate 3 are assembled, the compression strip 4 is centered with the bottom of the fixed bottom plate 3, and a sealing layer clamping groove is formed between the compression strip 4 and the fixed bottom plate 3. The sealing layer 5 is spread in the hollow surface, and the free edge of the sealing layer 5 is filled in the sealing layer clamping groove, so that the plurality of sealing layers 5 are connected to form a compression strip type combined sealing inner liner structure.

[0073] The compression strip type combined sealing inner liner structure provided by the embodiment of the present application can connect the sealing layer 5 by using the sealing layer clamping groove formed between the framework 2 and the fixed bottom plate 3 after the assembly of the framework 2 and the fixed bottom plate 3. The free edge of the sealing layer 5 is filled in the sealing layer clamping groove, so that the sealing layer 5 and the sealing layer clamping groove are fitted, thereby avoiding the displacement or outflow of the sealing layer 5, and ensuring the air tightness.

[0074] The framework 2 comprises a warp framework 21 and a weft framework 22. After the warp framework 21 and the weft framework 22 are interwoven, a cylindrical shape is formed, and a hollow surface is formed between the adjacent two warp frameworks 21 and the adjacent two weft frameworks 22. In this embodiment, the warp framework 21 and the weft framework 22 are uniformly distributed, so that the compression strip type combined sealing inner liner structure provided by the embodiment of the present application is isotropic. When the sealing layer 5 is prefabricated, only a standard prefabricated sealing layer 5 needs to be made to replace the damaged parts.

[0075] In the structure of the combined sealing inner liner with the pressing strip, the arc-shaped framework 23 is a warp framework near the ends of the framework 2, and the diameter of the warp framework 22 near the ends in the axial direction of the cylinder gradually decreases. One end of the arc-shaped framework 23 is connected to the warp framework 22 with a larger diameter, and the other end of the arc-shaped framework 23 is connected to the warp framework 22 with a smaller diameter, so that the diameter of the cylinder gradually decreases at the two ends in the axial direction to form a dome. In this case, the combined sealing inner liner with the pressing strip further comprises the arc-shaped framework 23, so that the dome is formed at the two ends in the axial direction, and the application range of the combined sealing inner liner with the pressing strip is wider. In this case, the sealing layer 5 between the two adjacent arc-shaped frameworks 23 has a different specification from the sealing layer 5 between the warp framework 21 and the warp framework 22, so that the sealing layer 5 parts for replacement need to be additionally prepared according to the size of the arc-shaped framework 23.

[0076] In the structure of the combined sealing inner liner with the pressing strip, the arc-shaped framework 23 is a warp framework near the ends of the framework 2, and the diameter of the warp framework 22 near the ends in the axial direction of the cylinder gradually decreases. One end of the arc-shaped framework 23 is connected to the warp framework 22 with a larger diameter, and the other end of the arc-shaped framework 23 is connected to the warp framework 22 with a smaller diameter, so that the diameter of the cylinder gradually decreases at the two ends in the axial direction to form a dome. In this case, the combined sealing inner liner with the pressing strip further comprises the arc-shaped framework 23, so that the dome is formed at the two ends in the axial direction, and the application range of the combined sealing inner liner with the pressing strip is wider. In this case, the sealing layer 5 between the two adjacent arc-shaped frameworks 23 has a different specification from the sealing layer 5 between the warp framework 21 and the warp framework 22, so that the sealing layer 5 parts for replacement need to be additionally prepared according to the size of the arc-shaped framework 23.

[0077] In the structure of the combined sealing inner liner with the pressing strip, the arc-shaped framework 23 is a warp framework near the ends of the framework 2, and the diameter of the warp framework 22 near the ends in the axial direction of the cylinder gradually decreases. One end of the arc-shaped framework 23 is connected to the warp framework 22 with a larger diameter, and the other end of the arc-shaped framework 23 is connected to the warp framework 22 with a smaller diameter, so that the diameter of the cylinder gradually decreases at the two ends in the axial direction to form a dome. In this case, the combined sealing inner liner with the pressing strip further comprises the arc-shaped framework 23, so that the dome is formed at the two ends in the axial direction, and the application range of the combined sealing inner liner with the pressing strip is wider. In this case, the sealing layer 5 between the two adjacent arc-shaped frameworks 23 has a different specification from the sealing layer 5 between the warp framework 21 and the warp framework 22, so that the sealing layer 5 parts for replacement need to be additionally prepared according to the size of the arc-shaped framework 23.

[0078] In the structure of the combined sealing inner liner with the pressing strip, the arc-shaped framework 23 is a warp framework near the ends of the framework 2, and the diameter of the warp framework 22 near the ends in the axial direction of the cylinder gradually decreases. One end of the arc-shaped framework 23 is connected to the warp framework 22 with a larger diameter, and the other end of the arc-shaped framework 23 is connected to the warp framework 22 with a smaller diameter, so that the diameter of the cylinder gradually decreases at the two ends in the axial direction to form a dome. In this case, the combined sealing inner liner with the pressing strip further comprises the arc-shaped framework 23, so that the dome is formed at the two ends in the axial direction, and the application range of the combined sealing inner liner with the pressing strip is wider. In this case, the sealing layer 5 between the two adjacent arc-shaped frameworks 23 has a different specification from the sealing layer 5 between the warp framework 21 and the warp framework 22, so that the sealing layer 5 parts for replacement need to be additionally prepared according to the size of the arc-shaped framework 23.

[0079] The free edge of the sealing layer 5 is provided with a fourth protruding part, and the third protruding part forms a recessed part corresponding to the fourth protruding part, so that a wavy engagement surface is formed between the sealing layer 5 and the recessed part. In this case, the engagement surface between the sealing layer 5 and the recessed part can further ensure the stability of the cooperation between the sealing layer 5 and the framework 2 and the fixed bottom plate 3.

[0080] The pressing strip 4 is formed into a cage structure by interweaving longitudinal ribs and transverse ribs, and the cage structure forms a sealing layer clamping groove between the cage structure and the fixed bottom plate 3. In this case, by the cage structure, the damping between the sealing layer 5 and the framework 2 and the fixed bottom plate 3 can be increased, and the difficulty of the sealing layer 5 being pulled out from the framework 2 and the fixed bottom plate 3 is higher, so that the stability of the combined sealing lining structure with the pressing strip provided by the embodiment of the application is further ensured, and the air tightness of the combined sealing lining structure with the pressing strip provided by the embodiment of the application is further ensured.

[0081] Underground cavern for compressed air energy storage power plant

[0082] The underground cavern of the compressed air energy storage power station provided by the application comprises a concrete lining layer 1 and the combined sealing lining structure with the pressing strip provided by the application. The combined sealing lining structure with the pressing strip is fixedly arranged on the inner wall of the concrete lining layer 1.

[0083] The combined sealing lining structure with the pressing strip provided by the embodiment of the application is formed on the inner side of the concrete lining layer 1 of the underground cavern of the compressed air energy storage power station. The construction period is shorter than that of the welded steel plate, the cost is lower, the sealing performance is good, and the replacement of parts is convenient and easy to maintain. The air tightness can meet the use requirements under the premise that the fastening stability is ensured. In addition, the sealing layer 5 has a short construction period, the components can be prefabricated, and compared with the traditional steel plate lining which needs to be welded on site, a lot of construction period can be saved, and the cost is also lower. When overhauling, the damaged parts can be directly replaced.

[0084] The underground cavern of the compressed air energy storage power station further comprises a fastener 7. The fastener 7 passes through the framework 2 and the fixed bottom plate 3 and stops in the concrete lining layer 1. In this case, the combined sealing lining structure with the pressing strip provided by the embodiment of the application is fixed in the concrete lining layer 1 by the fastener 7, so that the possibility of displacement of the combined sealing lining structure with the pressing strip provided by the embodiment of the application in the concrete lining layer 1 is reduced, and the implementation stability of the underground cavern of the compressed air energy storage power station provided by the embodiment of the application is ensured.

[0085] The fastener 7 is an anchor rod. In this case, the anchor rod is used as the framework 2, the fixed bottom plate 3 and the concrete lining layer 1 of the underground cavern of the compressed air energy storage power station, and the technical scheme is simple, convenient and low in cost.

[0086] The inner wall of the concrete lining layer 1 is provided with a receiving groove. The receiving groove is matched with the shape of the fixed bottom plate 3, so that the fixed bottom plate 3 is embedded in the receiving groove. In this case, the limiting effect of the side wall of the receiving groove itself can be used to prevent the fixed bottom plate 3 from being displaced relative to the concrete lining layer 1, so that the application stability of the compressed air energy storage power station underground cavern provided by the embodiment of the present application is better.

[0087] Method of construction of underground cavern for compressed air energy storage power plant

[0088] The construction method of the compressed air energy storage power station underground cavern provided by the present application comprises the following steps:

[0089] Step S1: arranging a fixed bottom plate 3 on the inner wall of the compressed air energy storage power station underground cavern;

[0090] Step S2: arranging a framework 2 on the inner wall of the compressed air energy storage power station underground cavern, so that the framework 2 and the fixed bottom plate 3 are assembled, a sealing layer clamping groove is formed between the framework 2 and the fixed bottom plate 3, and a hollow surface is formed between the framework 2;

[0091] Step S3: spreading a sealing layer 5 in the hollow surface, and filling the free edge of the sealing layer 5 in the sealing layer clamping groove, so that a plurality of sealing layers 5 are connected to form a compression strip type combined sealing lining structure;

[0092] Step S4: fixing the compression strip type combined sealing lining structure on the inner wall of the concrete lining layer 1.

[0093] The construction method of the compressed air energy storage power station underground cavern provided by the embodiment of the present application can form the compression strip type combined sealing lining structure provided by the embodiment of the present application on the inner side of the concrete lining layer 1 of the compressed air energy storage power station underground cavern. The construction period is shorter than that of the welded steel plate, the cost is lower, the sealing performance is good, the parts are easy to replace, and the maintenance is easier. Under the premise that the fastening property is guaranteed, the air tightness can meet the use requirement. In addition, the sealing layer 5 has a short construction period, the components can be prefabricated, and compared with the traditional steel plate lining which needs to be welded on site, a lot of construction period can be saved, and the cost is also lower. When overhauling, the damaged place can be directly replaced.

[0094] The construction method of the compressed air energy storage power station underground cavern further comprises the following steps before the step of arranging the fixed bottom plate 3 on the inner wall of the compressed air energy storage power station underground cavern:

[0095] A receiving groove is excavated on the inner wall of the concrete lining layer 1 at a position corresponding to the fixed bottom plate 3. The receiving groove is matched with the shape of the fixed bottom plate 3, so that the fixed bottom plate 3 can be embedded in the receiving groove.

[0096] In this case, the displacement of the fixed bottom plate 3 to the concrete lining layer 1 can be avoided by the limiting effect of the sidewall of the accommodating groove itself, so that the application stability of the compressed air energy storage power station underground cavern provided by the embodiment of the application is better.

[0097] The construction method of the compressed air energy storage power station underground cavern further includes the following steps:

[0098] The sealing performance of the underground cavern is determined by carrying out a gas storage test on the compressed air energy storage power station underground cavern.

[0099] The possible air leakage points of the compressed air energy storage power station underground cavern are monitored in real time.

[0100] In this case, the possible air leakage points of the underground cavern can be monitored in real time, and the air leakage can be known and remedied in time once it occurs.

[0101] In the step of monitoring the possible air leakage points of the compressed air energy storage power station underground cavern in real time, the possible air leakage points include one or more of the following: the connection between the sealing layer 5 and the fixed bottom plate 3, the connection between the fixed bottom plate 3 and the framework 2, the connection between the fixed bottom plate 3 and the concrete lining layer 1, and a part of the sealing layer 5 itself. In this case, the possible air leakage points of the underground cavern can be accurately monitored in real time.

[0102] In the step of monitoring the possible air leakage points of the compressed air energy storage power station underground cavern in real time, the possible air leakage points include one or more of the following: the connection between the sealing layer 5 and the fixed bottom plate 3, the connection between the fixed bottom plate 3 and the framework 2, the connection between the fixed bottom plate 3 and the concrete lining layer 1, and a part of the sealing layer 5 itself. In this case, the possible air leakage points of the underground cavern can be accurately monitored in real time.

[0103] In the step of monitoring the possible air leakage points of the compressed air energy storage power station underground cavern in real time, the possible air leakage points include one or more of the following: the connection between the sealing layer 5 and the fixed bottom plate 3, the connection between the fixed bottom plate 3 and the framework 2, the connection between the fixed bottom plate 3 and the concrete lining layer 1, and a part of the sealing layer 5 itself. In this case, the possible air leakage points of the underground cavern can be accurately monitored in real time.

[0104] The alarm threshold of the gas flow monitoring instrument is set according to the position of the gas flow monitoring instrument.

[0105] When the gas flow anomaly alarm occurs, the air leakage point of the compressed air energy storage power station underground cavern is determined according to the position label of the alarm gas flow monitoring instrument.

[0106] In this case, once the air leakage occurs at the possible air leakage point of the underground cavern, the air leakage point of the underground cavern can be accurately determined according to the alarm information and the position label of the gas flow monitoring instrument, so that emergency repair measures can be taken.

[0107] Although the preferred embodiments of the application have been described, those skilled in the art can make further changes and modifications to the embodiments once they know the basic inventive concept. Therefore, the appended claims are intended to be interpreted as including all the preferred embodiments and all the changes and modifications falling within the scope of the application.

[0108] It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application cover modifications and variations of this application provided they come within the scope of the appended claims and their equivalents.

Claims

1. A gasketed composite seal liner structure characterized by, The skeleton (2), the fixed bottom plate (3) and a plurality of sealing layers (5), The skeleton (2) forms a hollow surface between the skeletons (2), The skeleton (2) is provided with a pressing strip (4) at the center of the skeleton (2), when the skeleton (2) is assembled with the fixed bottom plate (3), the pressing strip (4) is centered with the bottom of the fixed bottom plate (3), and a sealing layer clamping groove is formed between the pressing strip (4) and the fixed bottom plate (3), The sealing layer (5) is spread in the hollow surface, and the free edge of the sealing layer (5) is filled in the sealing layer clamping groove, so that a plurality of sealing layers (5) are connected to form a pressing strip type combined sealing lining structure. From the radial section of the skeleton (2), the pressing strip (4) forms a first protruding part towards the bottom of the fixed bottom plate (3); From the radial section of the fixed bottom plate (3), the fixed bottom plate (3) includes a second bottom and two second protruding parts, the two second protruding parts are respectively fixedly connected to the second bottom through one side thereof, So that the first protruding part and the second protruding part form two sealing layer clamping grooves respectively; Further comprising at least one third protruding part, The third protruding part is fixedly connected to the second protruding part, and the protruding direction of the third protruding part is towards the first protruding part, so that the sealing layer clamping groove has at least one detour.

2. The gusseted combined inner liner structure according to claim 1, characterized by, The skeleton (2) includes a warp skeleton (21) and a weft skeleton (22), The warp skeleton (21) and the weft skeleton (22) are interwoven to form a cylindrical shape, and the hollow surface is formed between adjacent two warp skeletons (21) and adjacent two weft skeletons (22).

3. The gusseted combined inner liner structure according to claim 2, characterized by, Further comprising an arc-shaped skeleton (23), The arc-shaped skeleton (23) is the weft skeleton (22) near the two ends of the skeleton (2), The diameter of the weft skeleton (22) near the axial end of the cylindrical shape gradually decreases, One end of the arc-shaped skeleton (23) is connected to the weft skeleton (22) with a larger diameter, and the other end of the arc-shaped skeleton (23) is connected to the weft skeleton (22) with a smaller diameter, so that the diameter of the cylindrical shape gradually shrinks at the axial ends to form a dome.

4. The gusseted combined inner liner structure according to claim 1, characterized by, The third protruding part adjacent to the bottom of the fixed bottom plate (3) is defined as a first level detour protruding part, The gap formed between the first level detour protruding part and the fixed bottom plate (3) is greater than the thickness of the sealing layer (5).

5. The gusseted combined inner liner structure according to claim 1, wherein The free edge of the sealing layer (5) is provided with a fourth protruding part, and the third protruding part forms a recess part at a position corresponding to the fourth protruding part, so that a wave-shaped engagement surface is formed between the sealing layer (5) and the recess part.

6. The gusseted combined inner liner structure according to claim 1, wherein The pressing strip (4) is formed into a cage structure by interweaving longitudinal ribs and transverse ribs, and the cage structure forms a sealing layer clamping groove with the fixed bottom plate (3).

7. A compressed air energy storage power plant underground cavern, characterized in that, The pressing strip type combined sealing lining structure is fixedly arranged on the inner wall of the concrete lining layer (1). Further comprising a fastener (7), 8. The compressed air energy storage power plant cavern of claim 7, wherein, ​ The fastener (7) penetrates through the framework (2) and the fixed bottom plate (3) and stops in the concrete lining layer (1).

9. The compressed air energy storage power plant cavern of claim 8, wherein, The fastener (7) is an anchor rod.

10. The compressed air energy storage power plant cavern of claim 7, wherein, The inner wall of the concrete lining layer (1) is provided with a receiving groove, The receiving groove is matched with the shape of the fixed bottom plate (3), so that the fixed bottom plate (3) is embedded in the receiving groove.

11. The method of constructing an underground cavern for a compressed air energy storage power plant according to any one of claims 7-10, characterized in that, The method comprises the following steps: The fixed bottom plate (3) is arranged on the inner wall of the compressed air energy storage power station underground cavern; The framework (2) is arranged on the inner wall of the compressed air energy storage power station underground cavern, so that the framework (2) and the fixed bottom plate (3) are assembled, a sealing layer clamping groove is formed between the framework (2) and the fixed bottom plate (3), and the framework (2) forms a hollow surface; The sealing layer (5) is spread in the hollow surface, and the free edge of the sealing layer (5) is filled in the sealing layer clamping groove, so that a plurality of sealing layers (5) are connected to form the compression strip type combined sealing lining structure; The compression strip type combined sealing lining structure is fixedly arranged on the inner wall of the concrete lining layer (1).

12. The method of claim 11, wherein the method further comprises: The compressed air energy storage power station underground cavern is the compressed air energy storage power station underground cavern of claim 10, and the construction method of the compressed air energy storage power station underground cavern further comprises the following steps before the step of arranging the fixed bottom plate (3) on the inner wall of the compressed air energy storage power station underground cavern: A receiving groove is excavated on the inner wall of the concrete lining layer (1) at a position corresponding to the fixed bottom plate (3), and the receiving groove is matched with the shape of the fixed bottom plate (3), so that the fixed bottom plate (3) can be embedded in the receiving groove.

13. The method of constructing a compressed air energy storage power plant cavern according to claim 11, wherein, The construction method of the compressed air energy storage power station underground cavern further comprises the following steps: A gas storage test is carried out on the compressed air energy storage power station underground cavern to determine the sealing performance of the underground cavern; The possible leakage points of the compressed air energy storage power station underground cavern are monitored in real time.

14. The method of claim 13, wherein the method further comprises: During the step of monitoring the possible leakage points of the compressed air energy storage power station underground cavern in real time, the possible leakage points include one or more of the connection between the sealing layer (5) and the fixed bottom plate (3), the connection between the fixed bottom plate (3) and the framework (2), the connection between the fixed bottom plate (3) and the concrete lining layer (1), and the part of the sealing layer (5) itself.

15. The method of claim 13, wherein the method further comprises: The real-time monitoring of the possible leakage points of the underground cavern comprises the following steps: A gas flow monitoring instrument is arranged at the possible leakage points of the compressed air energy storage power station underground cavern, and a position label is set for each gas flow monitoring instrument; An alarm threshold is set for the gas flow monitoring instrument according to the position of the gas flow monitoring instrument; When an abnormal gas flow alarm occurs, the position of the gas flow monitoring instrument is determined according to the position label of the alarm gas flow monitoring instrument, and the leakage point of the compressed air energy storage power station underground cavern is determined.

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