Dome sealing lining structure and construction method of tripod-type underground rock-lined cavern

Abstract

The present invention discloses a dome sealing lining structure and construction method for a tripod-type underground rock-lined cavern, which belongs to the field of compressed air energy storage technology. The tripod-type underground rock-lined cavern is arranged inside the surrounding rock, and a concrete lining layer is arranged between the tripod-type underground rock-lined cavern and the surrounding rock; wherein, the dome sealing lining structure of the tripod-type underground rock-lined cavern includes a dome frame, a columnar frame, a fan-ring type airtight layer and a column-ring type airtight layer, the dome frame and the columnar frame respectively provide a tripod bottom plate type connector, and the columnar frame is fixedly connected to the bottom of the dome frame through the tripod bottom plate type connector; the fan-ring type airtight layer is fixedly connected between the dome frames through the tripod bottom plate type connector, and the column-ring type airtight layer is fixedly connected between the columnar frames through the tripod bottom plate type connector, together constituting the dome sealing lining structure of the underground rock-lined cavern. Compared with the integral steel plate sealing layer, it is more convenient to install, has higher work efficiency and lower cost.

Description

Technical Field

[0001] The present invention relates to the technical field of compressed air energy storage, and in particular to a dome sealing lining structure of a tripod-type underground rock-lined cavern and a construction method thereof. Background Art

[0002] Compressed air energy storage systems primarily utilize surface steel tanks / pipes, salt caverns, and artificially lined chambers as high-pressure air storage vessels. Currently, large-scale storage installations rely primarily on salt caverns and artificially lined chambers. As industrialization continues, artificially lined chambers will become a widely used gas storage method. Unlike conventional underground chambers, artificially lined chambers designed specifically for gas storage must withstand high internal pressures, high temperature fluctuations, and high-frequency alternating loads, posing new challenges to the design of the chamber's sealing layer.

[0003] In traditional designs, steel plates are often used as sealing materials. However, due to their high cost and good thermal insulation properties, they perform poorly under high-temperature loads. Recent studies have shown that rubber materials have the basic conditions to become the sealing layer of high-pressure gas storage chambers. They are not only low-cost, but also have excellent mechanical properties and sealing properties. However, traditional rubber gas storage materials are usually manufactured as a monolithic structure, so there are some difficulties in the installation process of underground gas storage chambers. In traditional construction, workers often go down from the top of the cave to the bottom of the vertical shaft for hoisting operations, which is extremely difficult and dangerous. How to design a sealing lining structure that is easy to install, highly efficient, has excellent sealing performance, is lower in cost, and is safe to construct has become a problem that needs to be solved urgently. Summary of the Invention

[0004] In view of this, the present invention provides a dome sealing lining structure and construction method for a tripod-type underground rock-lined cavern. Compared with the integral sealing layer, it is more convenient to install, has higher work efficiency and lower cost, and is therefore more suitable for practical use.

[0005] In order to achieve the first objective above, the present invention provides a technical solution for a dome sealing lining structure of a tripod-type underground rock-lined cavern as follows:

[0006] The present invention provides a dome sealing lining structure of a tripod-type underground rock-lined cavern, wherein the tripod-type underground rock-lined cavern is arranged inside surrounding rocks (25), and a concrete lining layer (1) is arranged between the tripod-type underground rock-lined cavern and the surrounding rocks (25);

[0007] The dome sealing lining structure of the tripod-type underground rock-lined cavern comprises a dome frame (3), a columnar frame (26), a fan-ring type airtight layer (4) and a columnar ring type airtight layer (27), wherein the dome frame (3) and the columnar frame (26) respectively provide tripod bottom plate type connectors.

[0008] The columnar frame (26) is fixedly connected to the bottom of the dome frame (3) via the tripod base plate connector;

[0009] The fan-ring type airtight layer (4) is fixedly connected between the dome frames (3) through the tripod base plate type connector, and the column-ring type airtight layer (27) is fixedly connected between the columnar frames (26) through the tripod base plate type connector, so that the fan-ring type airtight layer (4) and the column-ring type airtight layer (27) together constitute the dome sealing lining structure of the underground rock-lined cavern.

[0010] The dome sealing lining structure of the tripod-type underground rock-lined cavern provided by the present invention can be further implemented by adopting the following technical measures.

[0011] Preferably, the dome frame (3) comprises a spherical shell plate (9), an annular frame (10), a plurality of arc-shaped frames (11), an outer ring frame (12), an inner ring frame (13), a radial frame (14) and an annular platform (2).

[0012] The inner diameter of the annular skeleton (10) is equal to the diameter of the spherical shell plate (9), and the annular skeleton (10) is fixedly arranged at the outer ring of the spherical shell plate (9);

[0013] The diameter of the outer ring skeleton (12) is greater than the diameter of the inner ring skeleton (13), and the diameter of the inner ring skeleton (13) is greater than the diameter of the spherical shell plate (9);

[0014] One end of the arc-shaped skeleton (11) is fixedly connected to the annular skeleton (10), and the other end of the arc-shaped skeleton (11) is fixedly connected to the outer ring skeleton (12);

[0015] One end of the radial skeleton (14) is fixedly connected to the outer ring skeleton (12), and the other end of the radial skeleton (14) is fixedly connected to the inner ring skeleton (13), so that an annular belt is formed between the outer ring skeleton (12) and the inner ring skeleton (13);

[0016] The annular platform (2) is arranged in the annular belt, wherein the annular platform (2) is fixedly connected between the outer ring frame (12), the inner ring frame (13) and the radial frame (14) via a foot frame bottom plate type connecting piece;

[0017] One end of the columnar skeleton (26) is fixedly connected to the inner ring skeleton (13);

[0018] The spherical shell plate (9) is sealed in the construction shaft.

[0019] Preferably, the tripod bottom plate type connector includes a first tripod bottom plate type connector, a second tripod bottom plate type connector, a third tripod bottom plate type connector, a fourth tripod bottom plate type connector and a fifth tripod bottom plate type connector.

[0020] The first footrest base plate type connecting member is provided at the connection between the annular skeleton (10) and the fan-ring type airtight layer (4);

[0021] The second footrest bottom plate type connecting member is provided at the connection between the arc-shaped frame (11) and the fan-ring type airtight layer (4);

[0022] The third footrest base plate type connecting member is provided at the connection between the outer ring frame (12), the fan ring type airtight layer (4), and the annular platform (2);

[0023] The fourth footrest base plate type connecting member is provided at the connection between the annular platform (2) and the column ring type airtight layer (27);

[0024] The fifth footrest base plate type connecting piece is provided at the connection between the column ring type airtight layer (27) and the columnar skeleton (26).

[0025] Preferably, the first tripod base plate type connecting member comprises a first fixed base plate (15) and a first tripod (16), and after the first tripod base plate type connecting member is cut along the axis direction and unfolded,

[0026] The first fixed base plate (15) has a length direction and a width direction,

[0027] The first leg (16) has a length direction and a width direction. The first leg (16) is provided with a connecting portion and a hook portion. The hook portion is provided at the top of the connecting portion so that the hook portion has a protrusion toward the connecting portion in the length direction of the first leg (16).

[0028] The first leg (16) is fixedly connected to the first fixed base plate (15) along the length direction of the first fixed base plate (15) by using its connecting portion, so that a clamping opening having a semi-open accommodating space is formed between the hook portion of the first leg (16) and the first fixed base plate (15), and the height of the semi-open accommodating space close to the connecting portion of the first leg (16) is h1, and the height of the semi-open accommodating space close to the open side position of the first leg (16) is h2, and h1>h2.

[0029] Preferably, the second tripod base plate type connecting member comprises a second fixed base plate (17) and a second tripod (18). After the second tripod base plate type connecting member is cut along the axis direction and unfolded, the cross section of the second tripod (18) is umbrella-shaped.

[0030] The second fixed base plate (17) has a length direction and a width direction,

[0031] The second leg (18) has a length direction and a width direction. The second leg (18) is provided with a connecting portion and an umbrella-shaped portion. The umbrella-shaped portion is provided on the top of the connecting portion so that the umbrella-shaped portion has protrusions on both sides of the length direction of the second leg (18) toward the connecting portion.

[0032] The second leg (18) is fixedly connected to the second fixed base plate (17) along the length direction of the second fixed base plate (17) by using its connecting portion, so that a semi-open accommodating space clamp is formed between the umbrella-shaped portion of the second leg (18) and the second fixed base plate (17), and the height of the semi-open accommodating space close to the connecting portion of the second leg (18) is h3, and the height of the semi-open accommodating space close to the open side position of the second leg (8) is h4, and h3>h4.

[0033] Preferably, the fifth leg bottom plate type connecting member comprises a fifth fixed bottom plate (23) and a fifth leg (28). After the fifth leg bottom plate type connecting member is cut along the axis direction and unfolded, the cross section of the fifth leg (28) is umbrella-shaped.

[0034] The fifth fixed base plate (23) has a length direction and a width direction,

[0035] The fifth leg (28) has a length direction and a width direction, and the fifth leg (18) is provided with a connecting portion and an umbrella-shaped portion, wherein the umbrella-shaped portion is provided at the top of the connecting portion so that the umbrella-shaped portion has protrusions on both sides of the length direction of the fifth leg (28) toward the connecting portion.

[0036] The fifth leg (28) is fixedly connected to the fifth fixed base plate (23) along the length direction of the fifth fixed base plate (23) by using its connecting portion, so that a semi-open accommodating space clamp is formed between the umbrella-shaped portion of the fifth leg (28) and the fifth fixed base plate (23), and the height of the semi-open accommodating space close to the connecting portion of the fifth leg (28) is h5, and the height of the semi-open accommodating space close to the open side position of the fifth leg (28) is h6, and h5>h6.

[0037] Preferably, the fourth leg bottom plate type connecting member comprises a fourth fixed bottom plate (21) and a fourth leg (22). After the fourth leg bottom plate type connecting member is cut along the axis direction and unfolded, the cross section of the fourth leg (22) is umbrella-shaped.

[0038] Observing from the radial cross section of the fourth fixed base plate (21), the fourth fixed base plate (21) has a folded corner facing away from the fourth leg, and two connecting wings are formed at the two folded corners of the fourth fixed base plate (21);

[0039] The fourth leg (22) has a length direction and a width direction, and is provided with a connecting portion and an umbrella-shaped portion, wherein the umbrella-shaped portion is provided at the top of the connecting portion so that the umbrella-shaped portion has a protrusion toward the connecting portion toward the two connecting wings of the fourth leg (22).

[0040] The fourth leg (22) is fixedly connected to the fourth fixed base plate (22) along the length direction of the fourth fixed base plate (21) by using its connecting portion, so that a semi-open accommodating space clamp is formed between the umbrella-shaped portion of the fourth leg (22) and the two connecting wings of the fourth fixed base plate (22).

[0041] Preferably, the third tripod base plate type connecting member comprises a third fixed base plate (19) and a third tripod (20). After the third tripod base plate type connecting member is cut along the axis direction and unfolded, the cross section of the third tripod (20) is umbrella-shaped.

[0042] Observing from the radial cross section of the third fixed base plate (19), the third fixed base plate (19) has a folded corner facing the direction close to the third leg frame, and two connecting wings are formed at the two folded corners of the third fixed base plate (19);

[0043] The third leg (20) has a length direction and a width direction, and is provided with a connecting portion and an umbrella-shaped portion, wherein the umbrella-shaped portion is provided at the top of the connecting portion so that the umbrella-shaped portion has a protrusion toward the connecting portion toward the two connecting wings of the third leg (20).

[0044] The third leg (20) is fixedly connected to the third fixed base plate (20) along the length direction of the third fixed base plate (19) by using its connecting portion, so that a semi-open accommodating space clamp is formed between the umbrella-shaped portion of the third leg (20) and the two connecting wings of the third fixed base plate (20).

[0045] Preferably, the dome sealing lining structure of the tripod-type underground rock-lined cavern further comprises an extension portion (29) and a sliding safety lock (5).

[0046] The extension portion (29) extends from the connection portion of the third leg (20) toward the distal end.

[0047] The sliding safety lock (5) comprises a first connecting portion and a second connecting portion,

[0048] The sliding safety lock catch (5) is arranged on the extension portion (29) through the first connecting portion, so that the sliding safety lock catch (5) can slide along the extension portion (29).

[0049] One end of the second connection portion is fixedly connected to the first connection portion, and the other end of the second connection portion is used to connect to an external accessory component.

[0050] Preferably, the dome sealing lining structure of the tripod-type underground rock-lined cavern further comprises a limiter (30) and a roller (31).

[0051] The limiting member (30) is fixedly arranged at the end of the extension portion (29).

[0052] The first connecting portion of the sliding safety lock (5) is provided with a box-type structure.

[0053] The box-type structure is engaged with the limiting member (30), forming an accommodating space between the box-type structure and the limiting member (30), the roller (31) being arranged in the accommodating space, and the rolling direction of the roller (31) being consistent with the sliding direction of the sliding safety lock (5).

[0054] Preferably, the outline size of the roller (31) is adapted to the size of the accommodating space.

[0055] Preferably, the dome sealing lining structure of the tripod-type underground rock-lined cavern further comprises an anchor rod (6) and a gasket (32).

[0056] The anchor rod (6) passes through the connecting portion of the third leg (20) and the extension portion (29), and a nut is used to fix the anchor rod (6), and the other end of the anchor rod (6) is fixed to the inside of the surrounding rock (25). The gasket (32) is arranged between the limiter (30) and the nut, wherein the inner diameter of the gasket (32) is larger than the diameter of the anchor rod (6) and smaller than the inner diameter of the nut, and the outer diameter of the gasket (32) is larger than the outer diameter of the nut.

[0057] Preferably, the accessory components include a construction hanging basket.

[0058] In order to achieve the second objective, the present invention provides a dome sealing lining structure and construction method for a tripod-type underground rock-lined cavern as follows:

[0059] The construction method of the dome sealing lining structure of the tripod-type underground rock-lined cavern provided by the present invention comprises the following steps:

[0060] Drilling connection holes on the concrete lining layer (1),

[0061] The dome frame (3) and the column frame (26) are arranged inside the concrete lining layer (1), and the dome frame (3) and the column frame (26) are connected and fixed to the concrete lining layer (1) using connecting bolts and the fixing base plate of the footrest base plate type connecting piece provided by the dome frame (3) and the column frame (26);

[0062] The fan-ring type airtight layer (4) and the column-ring type airtight layer (27) are connected between the dome frame (3) and the columnar frame (26) to obtain the dome sealing lining structure of the tripod-type underground rock-lined cavern.

[0063] The construction method of the dome sealing lining structure of the tripod-type underground rock-lined cavern provided by the present invention can be further implemented by adopting the following technical measures.

[0064] Preferably, the construction method of the dome sealing lining structure of the tripod-type underground rock-lined cavern further comprises the following steps:

[0065] Experimental gas storage is carried out inside the dome sealing lining structure of the tripod-type underground rock-lined cavern to determine the sealing performance and monitor possible leakage points.

[0066] By applying the dome sealing lining structure of the tripod-type underground rock-lined cavern provided by the embodiment of the present invention, there is no need to provide an integral sealing lining structure in the concrete lining layer 1 during the construction process. Instead, a skeleton is first laid out in the concrete lining layer 1, and then the airtight layer is connected between the skeletons to finally form the dome sealing lining structure of the underground rock-lined cavern. Compared with the integral sealing layer, the dome sealing lining structure of the underground rock-lined cavern is more convenient to install, more efficient and less expensive. BRIEF DESCRIPTION OF THE DRAWINGS

[0067] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present invention. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0068] Figure 1 A cross-sectional view showing the relationship between the sealed chamber, concrete lining, and surrounding rock structure involved in the dome sealed lining structure of the tripod-type underground rock-lined chamber provided in an embodiment of the present invention;

[0069] Figure 2 A three-dimensional schematic diagram of a sealed cavern combined dome sealing lining structure involved in the dome sealing lining structure of a tripod-type underground rock-lined cavern provided in an embodiment of the present invention;

[0070] Figure 3An axial cross-sectional view of a sealed cavern annular platform involved in the dome sealed lining structure of a tripod-type underground rock-lined cavern provided in an embodiment of the present invention;

[0071] Figure 4 An axial cross-sectional view of a spherical shell plate of a sealed cavern dome, which is involved in the dome sealing lining structure of a tripod-type underground rock-lined cavern provided by an embodiment of the present invention;

[0072] Figure 5 A schematic diagram of the connection between the sliding safety lock connection device and the outer ring frame involved in the dome sealing lining structure of the tripod-type underground rock-lined cavern provided by an embodiment of the present invention;

[0073] Figure 6 A three-dimensional schematic diagram of a fan-ring type airtight layer involved in the dome sealing lining structure of a tripod-type underground rock-lined cavern provided in an embodiment of the present invention;

[0074] Figure 7 A cross-sectional view of a first tripod base plate type connector involved in the dome sealing lining structure of a tripod type underground rock lined cavern provided by an embodiment of the present invention;

[0075] Figure 8 A cross-sectional view of a second tripod base plate connector involved in the dome sealing lining structure of a tripod-type underground rock-lined cavern provided by an embodiment of the present invention;

[0076] Figure 9 A cross-sectional view of a third tripod base plate connector involved in the dome sealing lining structure of a tripod-type underground rock-lined cavern provided by an embodiment of the present invention;

[0077] Figure 10 A cross-sectional view of a fourth tripod base plate type connector involved in the dome sealing lining structure of a tripod type underground rock lined cavern provided by an embodiment of the present invention;

[0078] Figure 11 A cross-sectional view of a fifth tripod base plate connector involved in the dome sealing lining structure of a tripod-type underground rock-lined cavern provided by an embodiment of the present invention;

[0079] Figure 12 A cross-sectional view of the junction of the annular steel frame and the arc-shaped frame involved in the dome sealing lining structure of the tripod-type underground rock-lined cavern provided by an embodiment of the present invention;

[0080] Figure 13 A flowchart of the steps of a construction method for a dome sealing lining structure of a tripod-type underground rock-lined cavern provided in an embodiment of the present invention.

[0081] Description of reference numerals:

[0082] 1-concrete lining layer, 2-annular platform, 3-dome frame, 4-fan-ring airtight layer, 5-sliding safety lock, 6-anchor rod, 7-first bolt, 8-second bolt, 9-spherical shell plate, 10-annular frame, 11-arc-shaped frame, 12-outer ring frame, 13-inner ring frame, 14-radial frame, 15-first fixed base plate, 16-first tripod, 17-second fixed base plate, 18-second tripod, 19-third fixed base plate, 20-third tripod, 21-fourth fixed base plate, 22-fourth tripod, 23-fifth fixed base plate, 24-weld, 25-surrounding rock, 26-column frame, 27-column-ring airtight layer, 28-fifth tripod, 29-extension part, 30-limiting part, 31-roller, 32-gasket. DETAILED DESCRIPTION

[0083] In view of this, the present invention provides a dome sealing lining structure and construction method for a tripod-type underground rock-lined cavern. Compared with the integral steel plate sealing layer, it is more convenient to install, has higher work efficiency and lower cost, and is therefore more suitable for practical use.

[0084] To further illustrate the technical means and effectiveness of the present invention in achieving its intended objectives, the following, in conjunction with the accompanying drawings and preferred embodiments, describes in detail the specific implementation, structure, features, and effectiveness of a tripod-type underground rock-lined vault sealing lining structure and construction method for the present invention. In the following description, different references to "one embodiment" or "embodiment" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, or characteristics of one or more embodiments may be combined in any suitable manner.

[0085] The term "and / or" in this article is merely a description of the association relationship between associated objects, indicating that three relationships may exist. For example, A and / or B, specifically understood as: A and B may be included at the same time, A may exist alone, or B may exist alone, and any of the above three situations may exist.

[0086] Dome sealing lining structure of tripod type underground rock lined cavern

[0087] See attached Figure 1 -Attached Figure 12An embodiment of the present invention provides a dome sealing lining structure for a tripod-type underground rock-lined storage. The tripod-type underground rock-lined storage is disposed within surrounding rock 25, and a concrete lining layer 1 is disposed between the tripod-type underground rock-lined storage and the surrounding rock 25. The dome sealing lining structure of the tripod-type underground rock-lined storage includes a dome frame 3, a columnar frame 26, a fan-ring type airtight layer 4, and a column-ring type airtight layer 27. The dome frame 3 and the columnar frame 26 each provide a tripod bottom plate type connector. The columnar skeleton 26 is fixedly connected to the bottom of the dome skeleton 3 through a tripod base plate type connector; the fan-ring type airtight layer 4 is fixedly connected between the dome skeletons 3 through a tripod base plate type connector, and the column-ring type airtight layer 27 is fixedly connected between the columnar skeletons 26 through a tripod base plate type connector, so that the fan-ring type airtight layer 4 and the column-ring type airtight layer 27 together constitute the dome sealing lining structure of the underground rock-lined cavern.

[0088] By applying the dome sealing lining structure of the tripod-type underground rock-lined cavern provided by the embodiment of the present invention, there is no need to provide an integral sealing lining structure in the concrete lining layer 1 during the construction process. Instead, a skeleton is first laid out in the concrete lining layer 1, and then the airtight layer is connected between the skeletons to finally form the dome sealing lining structure of the underground rock-lined cavern. Compared with the integral sealing layer, the dome sealing lining structure of the underground rock-lined cavern is more convenient to install, more efficient and less expensive.

[0089] The dome framework 3 comprises a spherical shell plate 9, an annular frame 10, multiple curved frames 11, an outer ring frame 12, an inner ring frame 13, a radial frame 14, and an annular platform 2. The inner diameter of the annular frame 10 is equal to the diameter of the spherical shell plate 9 and is fixedly mounted on the outer ring of the spherical shell plate 9. The diameter of the outer ring frame 12 is larger than that of the inner ring frame 13, which in turn is larger than the diameter of the spherical shell plate 9. One end of the curved frame 11 is fixedly connected to the annular frame 10, and the other end is fixedly connected to the outer ring frame 12. One end of the radial frame 14 is fixedly connected to the outer ring frame 12, and the other end is fixedly connected to the inner ring frame 13, forming an annular band between the outer and inner ring frames 12 and 13. The annular platform 2 is positioned within the annular band and is fixedly connected to the outer, inner, and radial frames 14 via a tripod-type connector. One end of the columnar frame 26 is fixedly connected to the inner ring frame 13. The spherical shell plate 9 is sealed in the construction shaft. In this case, the dome frame 3 is easy to form, and when the tripod base plate type connector is used to connect to the dome frame 3, the connection reliability is high.

[0090] Among them, the tripod bottom plate type connector includes a first tripod bottom plate type connector, a second tripod bottom plate type connector, a third tripod bottom plate type connector, a fourth tripod bottom plate type connector and a fifth tripod bottom plate type connector. The first tripod bottom plate type connector is arranged at the connection between the annular skeleton 10 and the fan-ring type airtight layer 4. The second tripod bottom plate type connector is arranged at the connection between the arc skeleton 11 and the fan-ring type airtight layer 4. The third tripod bottom plate type connector is arranged at the connection between the outer ring skeleton 12 and the fan-ring type airtight layer 4 and the annular platform 2. The fourth tripod bottom plate type connector is arranged at the connection between the annular platform 2 and the columnar ring type airtight layer 27. The fifth tripod bottom plate type connector is arranged at the connection between the columnar ring type airtight layer 27 and the columnar skeleton 26. In this case, different forms of tripod bottom plate type connectors can be arranged according to the specific conditions of different connection parts for better adaptability.

[0091] The first tripod-base connector includes a first fixed base plate 15 and a first leg 16. After the first tripod-base connector is cut and unfolded along its axis, the first fixed base plate 15 has a length and a width. The first leg 16 has a length and a width. The first leg 16 includes a connecting portion and a hook portion. The hook portion is disposed at the top of the connecting portion, such that the hook portion has a protrusion toward the connecting portion in the lengthwise direction of the first leg 16. The first leg 16 is fixedly connected to the first fixed base plate 15 via its connecting portion along the lengthwise direction of the first fixed base plate 15, forming a semi-open accommodating space between the hook portion of the first leg 16 and the first fixed base plate 15. The height of the semi-open accommodating space near the connecting portion of the first leg 16 is h1, and the height of the semi-open accommodating space near the open side of the first leg 16 is h2, where h1>h2. In this manner, the fan-ring airtight layer 4 can be connected to the annular frame 10 using this semi-open accommodating space clamp, providing high connection reliability.

[0092] The second tripod base plate connector includes a second fixed base plate 17 and a second tripod 18. After the second tripod base plate connector is cut along its axis and unfolded, the second tripod 18 has an umbrella-shaped cross-section. The second fixed base plate 17 has a length and a width. The second tripod 18 has a length and a width. The second tripod 18 includes a connecting portion and an umbrella-shaped portion. The umbrella-shaped portion is disposed at the top of the connecting portion, such that the umbrella-shaped portion has protrusions on both sides of the length of the second tripod 18 toward the connecting portion. The second tripod 18 is fixedly connected to the second fixed base plate 17 along its length, forming a semi-open accommodating space between the umbrella-shaped portion of the second tripod 18 and the second fixed base plate 17. The height of the semi-open accommodating space near the connecting portion of the second tripod 18 is h3, and the height of the semi-open accommodating space near the open side of the second tripod 8 is h4, where h3>h4. In this case, the fan-ring type airtight layer 4 can be connected to the arc-shaped skeleton 11 by using the semi-open accommodating space clamp, and the connection reliability is high.

[0093] The fifth leg-mounted connector includes a fifth fixed base plate 23 and a fifth leg 28. When the fifth leg-mounted connector is cut along its axis and unfolded, the fifth leg 28 has an umbrella-shaped cross-section. The fifth fixed base plate 23 has a length and a width. The fifth leg 28 has a length and a width. The fifth leg 18 comprises a connecting portion and an umbrella-shaped portion. The umbrella-shaped portion is disposed at the top of the connecting portion, with projections on both sides of the umbrella-shaped portion along the length of the fifth leg 28. The fifth leg 28 is fixedly connected to the fifth fixed base plate 23 via its connecting portion along its length, forming a semi-open accommodating space between the umbrella-shaped portion of the fifth leg 28 and the fifth fixed base plate 23. The height of the semi-open accommodating space near the connecting portion of the fifth leg 28 is h5, and the height of the semi-open accommodating space near the open side of the fifth leg 28 is h6, where h5>h6. In this case, the column-ring type airtight layer 27 can be connected to the columnar skeleton 26 by using the semi-open accommodation space clamp, and the connection reliability is high.

[0094] The fourth leg-base connector comprises a fourth fixed base plate 21 and a fourth leg 22. When the fourth leg-base connector is cut and unfolded along its axis, the fourth leg 22 has an umbrella-shaped cross-section. Viewed from a radial cross-section of the fourth fixed base plate 21, the fourth fixed base plate 21 has a folded angle facing away from the fourth leg, with two connecting wings formed at the two folded angles. The fourth leg 22 has a lengthwise and widthwise direction. It comprises a connecting portion and an umbrella-shaped portion. The umbrella-shaped portion is positioned at the top of the connecting portion, with projections protruding toward the connecting portion and the two connecting wings of the fourth leg 22. The fourth leg 22 is fixedly connected to the fourth fixed base plate 22 along its lengthwise direction via its connecting portion, creating a semi-open accommodating gap between the umbrella-shaped portion of the fourth leg 22 and the two connecting wings of the fourth fixed base plate 22. In this manner, the column-ring airtight layer 27 can be connected to the annular platform 2 using this semi-open accommodating gap, providing high connection reliability.

[0095] The third leg-mount base connector comprises a third fixed base plate 19 and a third leg 20. When the third leg-mount base connector is cut along its axis and unfolded, the third leg 20 has an umbrella-shaped cross-section. Viewed from a radial cross-section of the third fixed base plate 19, the third fixed base plate 19 has a folded angle toward the third leg, with two connecting wings formed at the two folded angles. The third leg 20 has a lengthwise and widthwise direction. The third leg 20 comprises a connecting portion and an umbrella-shaped portion. The umbrella-shaped portion is disposed at the top of the connecting portion, with the umbrella-shaped portion protruding toward the connecting portion and the two connecting wings of the third leg 20. The third leg 20 is fixedly connected to the third fixed base plate 20 along its lengthwise direction via its connecting portion, forming a semi-open accommodating space between the umbrella-shaped portion of the third leg 20 and the two connecting wings of the third fixed base plate 20. In this case, the fan-ring airtight layer 4 and the annular platform 2 can be connected to the outer ring skeleton 12 by using the semi-open accommodating space clamp, and the connection reliability is high.

[0096] Among them, the dome sealing lining structure of the tripod-type underground rock-lined cavern also includes an extension part 29 and a sliding safety lock buckle 5. The extension part 29 extends from the connection part of the third tripod 20 to the distal end. The sliding safety lock buckle 5 includes a first connection part and a second connection part. The sliding safety lock buckle 5 is arranged on the extension part 29 through the first connection part, so that the sliding safety lock buckle 5 can slide along the extension part 29. One end of the second connection part is fixedly connected to the first connection part, and the other end of the second connection part is used to connect external accessories. In this case, the extension part 29 and the sliding safety lock buckle 5 can be used to connect external accessories. In this embodiment, the accessories include a construction hanging basket, which makes the construction process more convenient.

[0097] Among them, the dome sealing lining structure of the tripod-type underground rock-lined cavern also includes a limiter 30 and a roller 31. The limiter 30 is fixedly arranged at the end of the extension 29. The first connecting portion of the sliding safety lock 5 is provided with a box-type structure. The box-type structure is embedded with the limiter 30, and an accommodating space is formed between the box-type structure and the limiter 30. The roller 31 is arranged in the accommodating space, and the rolling direction of the roller 31 is consistent with the sliding direction of the sliding safety lock 5. In this case, the roller 31 can be used to convert the sliding friction force during the sliding process of the sliding safety lock 5 into rolling friction force, making sliding more convenient.

[0098] The outline size of the roller 31 is adapted to the size of the accommodating space. In this case, the sliding safety lock catch 5 can be prevented from tilting during the sliding process.

[0099] The dome sealing lining structure of the tripod-type underground rock-lined storage also includes an anchor rod 6 and a gasket 32. The anchor rod 6 passes through the connection portion and the extension portion 29 of the third tripod 20. A nut is used to secure the anchor rod 6, and the other end of the anchor rod 6 is fixed to the interior of the surrounding rock 25. The gasket 32 ​​is positioned between the stopper 30 and the nut. The inner diameter of the gasket 32 ​​is larger than the diameter of the anchor rod 6 but smaller than the inner diameter of the nut, and the outer diameter of the gasket 32 ​​is larger than the outer diameter of the nut. In this manner, the connection of the anchor rod 6 is more stable.

[0100] Wherein, accessory parts comprise construction hanging basket. In this case, the tools used in the construction process can be placed in the construction hanging basket, and the construction process is more convenient.

[0101] Dome sealing lining structure and construction method of tripod-type underground rock-lined cavern

[0102] See attached Figure 13 The construction method of the dome sealing lining structure of the tripod-type underground rock-lined cavern provided by the present invention comprises the following steps:

[0103] Step S1: Drill connection holes on the concrete lining layer 1.

[0104] Step S2: Arrange the dome frame 3 and the column frame 26 inside the concrete lining layer 1, and use the connecting bolts and the fixing base plate of the footrest base plate type connector provided by the dome frame 3 and the column frame 26 to connect and fix the dome frame 3 and the column frame 26 to the concrete lining layer 1;

[0105] Step S3: Connect the fan-ring type airtight layer 4 and the column-ring type airtight layer 27 between the dome frame 3 and the columnar frame 26 to obtain the dome sealing lining structure of the tripod-type underground rock-lined cavern.

[0106] By applying the dome sealing lining structure of the tripod-type underground rock-lined cavern provided by the embodiment of the present invention, there is no need to provide an integral sealing lining structure in the concrete lining layer 1 during the construction process. Instead, a skeleton is first laid out in the concrete lining layer 1, and then the airtight layer is connected between the skeletons to finally form the dome sealing lining structure of the underground rock-lined cavern. Compared with the integral sealing layer, the dome sealing lining structure of the underground rock-lined cavern is more convenient to install, more efficient and less expensive.

[0107] The construction method of the dome sealing lining structure of the tripod-type underground rock-lined cavern further includes the following steps:

[0108] Step S4: Conduct experimental gas storage inside the dome sealing lining structure of the tripod-type underground rock-lined cavern to determine the sealing performance and monitor possible leakage points.

[0109] In this case, once the dome sealing lining structure of the tripod-type underground rock-lined cavern leaks, timely measures can be taken to repair it.

[0110] Although the preferred embodiments of the present invention have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention.

[0111] Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if such changes and modifications fall within the scope of the claims and their equivalents, the present invention is intended to include such changes and modifications.

Claims

1. A dome sealing lining structure of a tripod-type underground rock-lined cavern, characterized in that: The tripod-type underground rock-lined cavern is arranged inside the surrounding rock (25), and a concrete lining layer (1) is arranged between the tripod-type underground rock-lined cavern and the surrounding rock (25); The dome sealing lining structure of the tripod-type underground rock-lined cavern comprises a dome frame (3), a columnar frame (26), a fan-ring type airtight layer (4) and a columnar ring type airtight layer (27), wherein the dome frame (3) and the columnar frame (26) respectively provide tripod bottom plate type connectors. The columnar frame (26) is fixedly connected to the bottom of the dome frame (3) via the tripod base plate connector; The fan-ring type airtight layer (4) is fixedly connected between the dome frames (3) through the tripod base plate type connector, and the column-ring type airtight layer (27) is fixedly connected between the columnar frames (26) through the tripod base plate type connector, so that the fan-ring type airtight layer (4) and the column-ring type airtight layer (27) together constitute the dome sealing lining structure of the underground rock-lined cavern; The dome frame (3) comprises a spherical shell plate (9), an annular frame (10), a plurality of arc-shaped frames (11), an outer ring frame (12), an inner ring frame (13), a radial frame (14) and an annular platform (2). The inner diameter of the annular skeleton (10) is equal to the diameter of the spherical shell plate (9), and the annular skeleton (10) is fixedly arranged at the outer ring of the spherical shell plate (9); The diameter of the outer ring skeleton (12) is greater than the diameter of the inner ring skeleton (13), and the diameter of the inner ring skeleton (13) is greater than the diameter of the spherical shell plate (9); One end of the arc-shaped skeleton (11) is fixedly connected to the annular skeleton (10), and the other end of the arc-shaped skeleton (11) is fixedly connected to the outer ring skeleton (12); One end of the radial skeleton (14) is fixedly connected to the outer ring skeleton (12), and the other end of the radial skeleton (14) is fixedly connected to the inner ring skeleton (13), so that an annular belt is formed between the outer ring skeleton (12) and the inner ring skeleton (13); The annular platform (2) is arranged in the annular belt, wherein the annular platform (2) is fixedly connected between the outer ring frame (12), the inner ring frame (13) and the radial frame (14) via a foot frame bottom plate type connecting piece; One end of the columnar skeleton (26) is fixedly connected to the inner ring skeleton (13); The spherical shell plate (9) is sealed in the construction shaft; The tripod bottom plate type connecting member includes a first tripod bottom plate type connecting member, a second tripod bottom plate type connecting member, a third tripod bottom plate type connecting member, a fourth tripod bottom plate type connecting member and a fifth tripod bottom plate type connecting member, The first footrest base plate type connecting member is provided at the connection between the annular skeleton (10) and the fan-ring type airtight layer (4); The second footrest base plate type connecting member is provided at the connection between the arc-shaped frame (11) and the fan-ring type airtight layer (4); The third footrest base plate type connecting member is provided at the connection between the outer ring frame (12), the fan ring type airtight layer (4), and the annular platform (2); The fourth footrest base plate type connecting member is provided at the connection between the annular platform (2) and the column ring type airtight layer (27); The fifth footrest base plate type connecting piece is provided at the connection between the column ring type airtight layer (27) and the columnar skeleton (26).

2. The dome sealing lining structure of the tripod-type underground rock-lined cavern according to claim 1 is characterized in that: The first tripod bottom plate type connecting member comprises a first fixed bottom plate (15) and a first tripod (16). After the first tripod bottom plate type connecting member is cut along the axis direction and unfolded, The first fixed base plate (15) has a length direction and a width direction, The first leg (16) has a length direction and a width direction. The first leg (16) is provided with a connecting portion and a hook portion. The hook portion is provided at the top of the connecting portion so that the hook portion has a protrusion toward the connecting portion in the length direction of the first leg (16). The first leg (16) is fixedly connected to the first fixed base plate (15) along the length direction of the first fixed base plate (15) by using its connecting portion, so that a clamping opening having a semi-open accommodating space is formed between the hook portion of the first leg (16) and the first fixed base plate (15), and the height of the semi-open accommodating space close to the connecting portion of the first leg (16) is h1, and the height of the semi-open accommodating space close to the open side position of the first leg (16) is h2, and h1>h2.

3. The dome sealing lining structure of the tripod-type underground rock-lined cavern according to claim 1 is characterized in that: The second tripod base plate type connecting member comprises a second fixed base plate (17) and a second tripod (18). After the second tripod base plate type connecting member is cut along the axis direction and unfolded, the cross section of the second tripod (18) is umbrella-shaped. The second fixed base plate (17) has a length direction and a width direction, The second leg (18) has a length direction and a width direction. The second leg (18) is provided with a connecting portion and an umbrella-shaped portion. The umbrella-shaped portion is provided on the top of the connecting portion so that the umbrella-shaped portion has protrusions on both sides of the length direction of the second leg (18) toward the connecting portion. The second leg (18) is fixedly connected to the second fixed base plate (17) along the length direction of the second fixed base plate (17) by using its connecting portion, so that a semi-open accommodating space clamp is formed between the umbrella-shaped portion of the second leg (18) and the second fixed base plate (17), and the height of the semi-open accommodating space close to the connecting portion of the second leg (18) is h3, and the height of the semi-open accommodating space close to the open side position of the second leg (18) is h4, and h3>h4.

4. The dome sealing lining structure of the tripod-type underground rock-lined cavern according to claim 1 is characterized in that: The fifth leg bottom plate type connecting member comprises a fifth fixed bottom plate (23) and a fifth leg (28). After the fifth leg bottom plate type connecting member is cut along the axis direction and unfolded, the cross section of the fifth leg (28) is umbrella-shaped. The fifth fixed base plate (23) has a length direction and a width direction, The fifth leg (28) has a length direction and a width direction, and the fifth leg (18) is provided with a connecting portion and an umbrella-shaped portion, wherein the umbrella-shaped portion is provided at the top of the connecting portion so that the umbrella-shaped portion has protrusions on both sides of the length direction of the fifth leg (28) toward the connecting portion. The fifth leg (28) is fixedly connected to the fifth fixed base plate (23) along the length direction of the fifth fixed base plate (23) by using its connecting portion, so that a semi-open accommodating space clamp is formed between the umbrella-shaped portion of the fifth leg (28) and the fifth fixed base plate (23), and the height of the semi-open accommodating space close to the connecting portion of the fifth leg (28) is h5, and the height of the semi-open accommodating space close to the open side position of the fifth leg (28) is h6, and h5>h6.

5. The dome sealing lining structure of the tripod-type underground rock-lined cavern according to claim 1 is characterized in that: The fourth leg bottom plate type connecting member comprises a fourth fixed bottom plate (21) and a fourth leg (22). After the fourth leg bottom plate type connecting member is cut along the axis direction and unfolded, the cross section of the fourth leg (22) is umbrella-shaped. Observing from the radial cross section of the fourth fixed base plate (21), the fourth fixed base plate (21) has a folded corner facing away from the fourth leg, and two connecting wings are formed at the two folded corners of the fourth fixed base plate (21); The fourth leg (22) has a length direction and a width direction, and is provided with a connecting portion and an umbrella-shaped portion, wherein the umbrella-shaped portion is provided at the top of the connecting portion so that the umbrella-shaped portion has a protrusion toward the connecting portion toward the two connecting wings of the fourth leg (22). The fourth leg (22) is fixedly connected to the fourth fixed base plate (21) along the length direction of the fourth fixed base plate (21) by using its connecting portion, so that a semi-open accommodating space clamp is formed between the umbrella-shaped portion of the fourth leg (22) and the two connecting wings of the fourth fixed base plate (21).

6. The dome sealing lining structure of the tripod-type underground rock-lined cavern according to claim 1 is characterized in that: The third tripod base plate type connecting member comprises a third fixed base plate (19) and a third tripod (20). After the third tripod base plate type connecting member is cut along the axis direction and unfolded, the cross section of the third tripod (20) is umbrella-shaped. Observing from the radial cross section of the third fixed base plate (19), the third fixed base plate (19) has a folded corner facing the direction close to the third leg frame, and two connecting wings are formed at the two folded corners of the third fixed base plate (19); The third leg (20) has a length direction and a width direction, and is provided with a connecting portion and an umbrella-shaped portion, wherein the umbrella-shaped portion is provided at the top of the connecting portion so that the umbrella-shaped portion has a protrusion toward the connecting portion toward the two connecting wings of the third leg (20). The third leg (20) is fixedly connected to the third fixed base plate (19) along the length direction of the third fixed base plate (19) by using its connecting portion, so that a semi-open accommodating space clamp is formed between the umbrella-shaped portion of the third leg (20) and the two connecting wings of the third fixed base plate (19).

7. The dome sealing lining structure of the tripod-type underground rock-lined cavern according to claim 6 is characterized in that: It also includes an extension (29) and a sliding safety lock (5), The extension portion (29) extends from the connection portion of the third leg (20) toward the distal end. The sliding safety lock (5) comprises a first connecting portion and a second connecting portion, The sliding safety lock catch (5) is arranged on the extension portion (29) through the first connecting portion, so that the sliding safety lock catch (5) can slide along the extension portion (29). One end of the second connection portion is fixedly connected to the first connection portion, and the other end of the second connection portion is used to connect to an external accessory component.

8. The dome sealing lining structure of the tripod-type underground rock-lined cavern according to claim 7 is characterized in that: It also includes a limiting member (30) and a roller (31), The limiting member (30) is fixedly arranged at the end of the extension portion (29). The first connecting portion of the sliding safety lock (5) is provided with a box-type structure. The box-type structure is engaged with the limiting member (30), forming an accommodating space between the box-type structure and the limiting member (30), the roller (31) being arranged in the accommodating space, and the rolling direction of the roller (31) being consistent with the sliding direction of the sliding safety lock (5).

9. The dome sealing lining structure of the tripod-type underground rock-lined cavern according to claim 8 is characterized in that: The outline size of the roller (31) is adapted to the size of the accommodating space.

10. The dome sealing lining structure of the tripod-type underground rock-lined cavern according to claim 8, characterized in that: It also includes an anchor rod (6) and a gasket (32), The anchor rod (6) passes through the connecting portion of the third leg (20) and the extension portion (29), and a nut is used to fix the anchor rod (6), and the other end of the anchor rod (6) is fixed to the inside of the surrounding rock (25). The gasket (32) is arranged between the limiter (30) and the nut, wherein the inner diameter of the gasket (32) is larger than the diameter of the anchor rod (6) and smaller than the inner diameter of the nut, and the outer diameter of the gasket (32) is larger than the outer diameter of the nut.

11. The dome sealing lining structure of the tripod-type underground rock-lined cavern according to claim 7, characterized in that: The accessory parts include a construction hanging basket.

12. The construction method of the dome sealing lining structure of the tripod type underground rock lined cavern according to any one of claims 1 to 11, characterized in that: The following steps are involved: Drilling connection holes on the concrete lining layer (1), The dome frame (3) and the column frame (26) are arranged inside the concrete lining layer (1), and the dome frame (3) and the column frame (26) are connected and fixed to the concrete lining layer (1) using connecting bolts and the fixing base plate of the footrest base plate type connecting piece provided by the dome frame (3) and the column frame (26); The fan-ring type airtight layer (4) and the column-ring type airtight layer (27) are connected between the dome frame (3) and the columnar frame (26) to obtain the dome sealing lining structure of the tripod-type underground rock-lined cavern.

13. The construction method of the dome sealing lining structure of the tripod-type underground rock-lined cavern according to claim 12 is characterized in that: The following steps are also included: Experimental gas storage is carried out inside the dome sealing lining structure of the tripod-type underground rock-lined cavern to determine the sealing performance and monitor possible leakage points.

Images