Footplate style form, sealed liner construction, underground chamber and method of construction

Abstract

The application provides a foot frame bottom plate type shaping piece, a sealed lining structure, an underground chamber and a construction method, and belongs to the technical field of compressed air energy storage. The framework comprises a fixed bottom plate and an umbrella-shaped foot frame. The umbrella-shaped foot frame is provided with a connecting part and an umbrella-shaped part. The umbrella-shaped part is arranged at the top of the connecting part, so that the umbrella-shaped part has protrusions on both sides of the length direction of the umbrella-shaped foot frame. The umbrella-shaped foot frame is fixedly connected to the fixed bottom plate in the length direction, forming a half-open type containing space clamping opening. The height of the half-open type containing space close to the connecting part of the umbrella-shaped foot frame is greater than the height of the half-open type containing space close to the open side of the umbrella-shaped foot frame. The sealed lining structure comprises an airtight layer and the foot frame bottom plate type shaping piece. The underground chamber comprises a concrete lining layer and the sealed lining structure. The sealed lining structure is fixedly arranged on the inner wall of the concrete lining layer through the fixed bottom plate of the foot frame bottom plate type shaping piece. The construction period is shorter than that of the welded steel plate, and the cost is lower.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of compressed air energy storage, in particular to a foot frame bottom plate type forming piece, a sealed lining structure, an underground chamber and a construction method. BACKGROUND

[0002] Compressed air energy storage technology is a large-capacity long-time physical energy storage technology, which does not involve the combustion of fossil fuels, does not emit any harmful substances, and is more environmentally friendly. It can greatly improve the time and space structure of power generation and power consumption of the power grid, increase the peak shaving capacity of the power grid, solve the intermittency problem of renewable energy, and is being widely promoted and applied in China. Compressed air energy storage systems mainly use ground steel tanks / steel pipes, salt rock caves and artificial lining chambers as high-pressure air storage containers. Large-scale storage devices currently rely on salt caves and artificial lining chambers. With the gradual promotion of industrialization, artificial lining chambers will gradually become a widely used gas storage method. Unlike general underground chambers, artificial lining chambers dedicated to gas storage will withstand high internal pressure, high temperature changes and high frequency alternating loads, which poses new challenges to the design of the sealing layer of the chamber. SUMMARY

[0003] Therefore, the present application provides a foot frame bottom plate type forming piece, a sealed lining structure, an underground chamber and a construction method. The foot frame bottom plate type forming piece can be combined to form a sealed lining structure, and the underground chamber is constructed. The sealed lining structure is formed on the inner wall of the underground chamber. The construction period is shorter than that of welded steel plates, and the cost is lower, so it is more suitable for practical use.

[0004] In order to achieve the first purpose, the technical scheme of the foot frame bottom plate type forming piece provided by the present application is as follows:

[0005] The foot frame bottom plate type forming piece (2) is annular, and the foot frame bottom plate type forming piece (2) comprises a fixed bottom plate (7) and an umbrella-shaped foot frame (8). After cutting and unfolding the foot frame bottom plate type forming piece (2) along the axial direction,

[0006] The fixed bottom plate (7) has a length direction and a width direction,

[0007] The umbrella-shaped foot frame (8) has a length direction and a width direction, and the umbrella-shaped foot frame (8) is provided with a connecting portion and an umbrella-shaped portion. The umbrella-shaped portion is arranged at the top of the connecting portion, so that the umbrella-shaped portion has protrusions on both sides of the length direction of the umbrella-shaped foot frame (8) towards the connecting portion,

[0008] The umbrella-shaped leg support (8) is fixedly connected to the fixed bottom plate (7) along the length direction of the fixed bottom plate (7) by the connecting part of the umbrella-shaped leg support (8), so that a semi-open containing space gap is formed between the umbrella-shaped part of the umbrella-shaped leg support (8) and the fixed bottom plate (7), the height of the semi-open containing space gap near the connecting part of the umbrella-shaped leg support (8) is h1, the height of the semi-open containing space gap near the open side of the umbrella-shaped leg support (8) is h2, and h1>h2.

[0009] The foot support bottom plate type shaping member provided by the application can also be further implemented by the following technical measures.

[0010] Preferably, the connecting part and the umbrella-shaped part of the umbrella-shaped leg support (8) are integrally formed.

[0011] Preferably, the umbrella-shaped leg support (8) is fixedly connected to the fixed bottom plate (7) by a fastening bolt, or the umbrella-shaped leg support (8) is integrally formed with the fixed bottom plate (7).

[0012] Preferably, the foot support bottom plate type shaping member (2) is made of corrosion-resistant steel.

[0013] Preferably,

[0014] The foot support bottom plate type shaping member (2) is integrally formed in a ring shape,

[0015] Alternatively,

[0016] The foot support bottom plate type shaping member (2) comprises a plurality of foot support bottom plate type shaping assemblies, and the plurality of foot support bottom plate type shaping assemblies are abutted and spliced in the width direction to form the foot support bottom plate type shaping member (2) in a ring shape.

[0017] In order to achieve the second purpose, the sealing inner liner structure provided by the application has the following technical scheme:

[0018] The sealing inner liner structure provided by the application comprises an airtight layer (3) and at least one foot support bottom plate type shaping member (2) provided by the application,

[0019] The airtight layer (3) is arranged on the foot support bottom plate type shaping member (2) by the gap with the semi-open containing space.

[0020] The sealing inner liner structure provided by the application can also be further implemented by the following technical measures.

[0021] Preferably, the airtight layer (3) is made of a material that can be deformed under pressure.

[0022] As preferred, the edge of the airtight layer (3) is provided with a fitting part which is fitted with the semi-open containing space clamp, and the airtight layer (3) is arranged on the foot plate type forming piece (2) through the fitting part.

[0023] As preferred, the foot plate type forming piece (2) comprises a plurality of,

[0024] The centers of the plurality of annular foot plate type forming pieces (2) are coaxial, and the plurality of annular foot plate type forming pieces (2) are connected into one through the airtight layer (3);

[0025] The airtight layer (3) is connected to the foot plate type forming piece (2) through the clamp with the semi-open containing space, so that the sealing lining structure becomes a cylindrical sealing lining structure.

[0026] As preferred, the plurality of annular foot plate type forming pieces (2) are uniformly arranged along the axial direction of the cylindrical sealing lining structure.

[0027] In order to achieve the third purpose, the underground chamber provided by the application has the following technical scheme:

[0028] The underground chamber provided by the application comprises a concrete lining layer (1) and a sealing lining structure provided by the application,

[0029] The inner wall of the concrete lining layer (1) is cylindrical,

[0030] The sealing lining structure is fixedly arranged on the inner wall of the concrete lining layer (1) through the fixed bottom plate (10) of the foot plate type forming piece (2).

[0031] In order to achieve the fourth purpose, the construction method of the underground chamber provided by the application has the following technical scheme:

[0032] The construction method of the underground chamber provided by the application comprises the following steps:

[0033] According to the inner diameter of the underground chamber, the annular foot plate type forming piece (2) is fixedly arranged on the inner wall of the underground chamber, so that the outer diameter of the annular foot plate type forming piece (2) is matched with the inner diameter of the underground chamber.

[0034] The airtight layer (3) is embedded in the annular foot plate type forming piece (2) through the clamp with the semi-open containing space, so that the inner wall of the underground chamber forms the sealing lining structure provided by the application.

[0035] The construction method of the underground chamber provided by the application can further be realized by the following technical measures.

[0036] As preferred, according to the inner diameter of the underground chamber, the outer diameter of the footboard type forming piece (2) in annular shape is adapted to the inner diameter of the underground chamber, which specifically includes the following steps:

[0037] Drilling the first connecting holes on the inner wall of the underground chamber;

[0038] Adjusting the position of the footboard type forming piece (2) so that the second connecting holes of the footboard type forming piece (2) correspond to the position of the first connecting holes on the inner wall of the underground chamber;

[0039] Rotating the stud (5) into the first connecting holes and the second connecting holes at the same time, so that the footboard type forming piece (2) is fixed to the inner wall of the underground chamber.

[0040] As preferred, after the step of embedding the airtight layer (3) in the hollowed inner part through the semi-open type containing space clamping so that the inner wall of the underground chamber forms the sealing lining structure provided by the present application, the following steps are further included:

[0041] Conducting a gas storage test on the underground chamber to determine the sealing performance of the underground chamber;

[0042] Real-time monitoring is conducted on the possible air leakage points of the underground chamber.

[0043] As preferred, during the step of real-time monitoring on the possible air leakage points of the underground chamber, the possible air leakage points include: the connection between the airtight layer (3) and the footboard type forming piece (2), the connection between the connecting part and the umbrella-shaped part of the footboard type forming piece (2), the connection between the fixed chassis of the footboard type forming piece (2) and the inner wall of the underground chamber, and one or more parts of the airtight layer (3) itself.

[0044] As preferred, the real-time monitoring on the possible air leakage points of the underground chamber specifically includes the following steps:

[0045] Setting gas flow monitoring instruments at the possible air leakage points of the underground chamber, and setting position labels for each gas flow monitoring instrument;

[0046] Setting alarm thresholds for the gas flow monitoring instruments according to their positions;

[0047] When an abnormal gas flow alarm occurs, determining the air leakage points of the underground chamber according to the position labels of the alarm gas flow monitoring instruments.

[0048] The umbrella-shaped foot frame bottom plate type forming part 2 can be embedded with the air-tight layer 3 by the semi-open containing space formed by the umbrella-shaped foot frame bottom plate type forming part 2, and the height of the semi-open containing space near the connecting part of the umbrella-shaped foot frame is greater than the height of the semi-open containing space near the open side of the umbrella-shaped foot frame, so that the umbrella-shaped foot frame bottom plate type forming part 2 is embedded between the outer edge of the bulk foot frame 8 and the air-tight layer 3, thereby avoiding displacement or falling out of the air-tight layer 3 and ensuring air-tightness. Therefore, the umbrella-shaped foot frame bottom plate type forming part 2 is formed on the inner side of the concrete lining layer 1 of the underground chamber. 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. The air-tightness can meet the use requirements under the premise that the fastening property is guaranteed. Since the umbrella-shaped foot frame bottom plate type forming part 2 is annular, the underground chamber lining can always be annular and isotropic. In addition, the air-tight layer 3 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 part can be directly replaced. BRIEF DESCRIPTION OF DRAWINGS

[0049] 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 drawings are for purposes of illustration only and are not intended to be limiting, of the application. Like reference numerals are used to refer to like elements throughout. In the drawings:

[0050] FIG. 1 is a schematic view of a typical cross-sectional structure of an underground chamber according to an embodiment of the present application; Figure 1

[0051] FIG. 2 is a schematic view of a partial enlarged structure of part A in FIG. 1; Figure 2 Figure 1 FIG. 3 is a schematic view of a partial structure of an axial cross-section of an underground chamber according to an embodiment of the present application;

[0052] FIG. 4 is a schematic view of a partial enlarged structure of part B in FIG. 3; Figure 3 FIG. 5 is a schematic view of a typical cross-section of an umbrella-shaped foot frame bottom plate type forming part according to an embodiment of the present application;

[0053] Figure 4 FIG. 6 is a schematic view of a structure of an umbrella-shaped foot frame bottom plate type forming part in an annular shape and adapted to an inner wall of an underground chamber according to an embodiment of the present application; Figure 3 FIG. 7 is a schematic view of a structure of an umbrella-shaped foot frame bottom plate type forming part in an annular shape and adapted to an inner wall of an underground chamber according to an embodiment of the present application;

[0054] Figure 5 FIG. 8 is a schematic view of a structure of an umbrella-shaped foot frame bottom plate type forming part in an annular shape and adapted to an inner wall of an underground chamber according to an embodiment of the present application;

[0055] Figure 6 FIG. 9 is a schematic view of a structure of an umbrella-shaped foot frame bottom plate type forming part in an annular shape and adapted to an inner wall of an underground chamber according to an embodiment of the present application;

[0056] Figure 7 ​​​​A perspective view of a typical direction of a footboard type forming piece in the form of a ring provided in an embodiment of the present application;

[0057] Figure 8 A perspective view of a typical direction of a sealing lining structure provided in an embodiment of the present application. DETAILED DESCRIPTION

[0058] Therefore, the present application provides a footboard type forming piece 2, a sealing lining structure, an underground chamber and a construction method, the footboard type forming piece 2 can be combined to form a sealing lining structure, and the underground chamber is constructed, so that the sealing lining structure is formed on the inner wall of the underground chamber, and the sealing performance of the underground chamber can be significantly improved, thereby being more suitable for practical use.

[0059] The inventor has made strenuous efforts and found that,

[0060] The traditional design idea is to use a steel plate as a sealing material, but the steel plate sealing cost is high, the chamber has good heat preservation performance, and the high temperature load lasts for a long time. Research shows that rubber material has the basic conditions for application in the sealing layer of a high-pressure gas storage chamber, and has low unit cost, good mechanical properties and sealing performance, but the traditional rubber gas storage material is manufactured as an integral structure at the factory, and it is very difficult to install in an underground gas storage chamber. How to design and install a combined sealing lining structure which is simple and can ensure the sealing performance has become a problem to be solved.

[0061] In order to further illustrate the technical means and effects taken by the present application to achieve the predetermined object, the following will combine the drawings and preferred embodiments to specifically and clearly explain the footboard type forming piece 2, the sealing lining structure, the underground chamber and the construction method according to the present application, the specific implementation, structure, characteristics and effects thereof, as follows. 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.

[0062] The term "and / or" in this paper is only a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which specifically means that A and B can exist at the same time, A can exist alone, B can exist alone, and any one of the above three cases can exist.

[0063] footing plate type former 2

[0064] Referring to the drawings Figure 1 to the drawings Figure 6The foot rack bottom plate type forming piece 2 provided by the embodiment of the present application is annular, and the foot rack bottom plate type forming piece 2 comprises a fixed bottom plate 7 and an umbrella-shaped foot rack 8. After the foot rack bottom plate type forming piece 2 is cut along the axial direction and unfolded, the fixed bottom plate 7 has a length direction and a width direction, the umbrella-shaped foot rack 8 has a length direction and a width direction, the umbrella-shaped foot rack 8 is provided with a connecting portion and an umbrella-shaped portion, the umbrella-shaped portion is arranged at the top of the connecting portion, the umbrella-shaped portion has protrusions towards both sides of the length direction of the umbrella-shaped foot rack 8, the umbrella-shaped foot rack 8 is fixedly connected to the fixed bottom plate 7 along the length direction of the fixed bottom plate 7 by using the connecting portion, a semi-open containing space gap is formed between the umbrella-shaped portion of the umbrella-shaped foot rack 8 and the fixed bottom plate 7, the height of the semi-open containing space close to the connecting portion of the umbrella-shaped foot rack 8 is h1, the height of the semi-open containing space close to the open side of the umbrella-shaped foot rack 8 is h2, and h1 > h2.

[0065] The foot rack bottom plate type forming piece 2 provided by the embodiment of the present application can embed the air-tight layer 3 in the semi-open containing space gap formed by the foot rack bottom plate type forming piece 2. Since the height of the semi-open containing space close to the connecting portion of the umbrella-shaped foot rack is greater than the height of the semi-open containing space close to the open side of the umbrella-shaped foot rack, the umbrella-shaped foot rack 8 can be embedded between the outer side edge of the umbrella-shaped foot rack 8 and the air-tight layer 3, so that the air-tight layer 3 is prevented from being displaced or removed, and the air-tightness is ensured. Therefore, the air-tight layer 3 is formed on the inner side of the concrete lining layer 1 of the underground chamber. The construction period of the air-tight layer 3 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 maintain, the air-tightness can meet the use requirements under the premise that the fastening performance is ensured, the air-tight layer 3 is annular, so that the lining of the underground chamber is always annular and isotropic. In addition, the air-tight layer 3 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, the air-tight layer 3 can save a lot of construction period and has a lower cost. When the air-tight layer 3 is maintained, the damaged part can be directly replaced.

[0066] In this case, the connecting portion and the umbrella-shaped portion are integrally formed, and there is no connecting joint between the connecting portion and the umbrella-shaped portion, so that stress concentration is avoided, and the service life of the umbrella-shaped foot rack 8 is prolonged.

[0067] In this case, the connecting portion and the umbrella-shaped portion are integrally formed, and there is no connecting joint between the connecting portion and the umbrella-shaped portion, so that stress concentration is avoided, and the service life of the umbrella-shaped foot rack 8 is prolonged.

[0068] The foot support bottom plate type shaping piece 2 is made of corrosion-resistant steel. The carbon content is less than 2.11%, and the iron-carbon alloy contains no other alloy elements except for iron, carbon, and limited amounts of silicon, manganese, phosphorus, sulfur and other impurities. The carbon content of industrial carbon steel is generally 0.05% to 1.35%. The performance of corrosion-resistant steel mainly depends on the carbon content. As the carbon content increases, the strength and hardness of the steel increase, and the plasticity, toughness and weldability decrease. Compared with other steels, corrosion-resistant steel is the earliest to be used, has low cost, wide performance range, and is used in the largest amount. It is suitable for water, steam, air, hydrogen, ammonia, nitrogen and petroleum products and other media with a nominal pressure PN of 32.0 MPa and a temperature of -30-425℃. Commonly used grades include WC1, WCB, ZG25, and high-quality steels 20, 25, 30, and low-alloy structural steel 16Mn. Therefore, the application of corrosion-resistant steel to the foot support bottom plate type shaping piece 2 provided in the embodiment of the application can improve the strength of the foot support bottom plate type shaping piece 2.

[0069] The foot support bottom plate type shaping piece 2 is integrally formed in a ring shape, or the foot support bottom plate type shaping piece 2 includes a plurality of foot support bottom plate type shaping assemblies, and the plurality of foot support bottom plate type shaping assemblies are butted together from the width direction to form the foot support bottom plate type shaping piece 2 in a ring shape. When the foot support bottom plate type shaping piece 2 in a ring shape is integrally formed, it has no connecting joint, which not only avoids stress concentration, but also avoids breaking from the connecting joint, thereby improving the service life of the foot support bottom plate type shaping piece 2 in a ring shape. When the foot support bottom plate type shaping piece 2 in a ring shape is formed by butting together the plurality of foot support bottom plate type shaping assemblies from the width direction, it is more convenient to assemble on the inner wall of the underground chamber. In practice, the selection can be made according to the needs.

[0070] sealing liner structure

[0071] The sealing liner structure provided by the application comprises a gas-tight layer 3 and at least one foot support bottom plate type shaping piece 2 provided by the application. The gas-tight layer 3 is arranged on the foot support bottom plate type shaping piece 2 by a clamp having a semi-open containing space.

[0072] The umbrella-shaped foot frame bottom plate type forming piece 2 can embed the air-tight layer 3 in the semi-open containing space formed by the umbrella-shaped foot frame bottom plate type forming piece 2, and the height of the semi-open containing space near the connecting part of the umbrella-shaped foot frame is greater than the height of the semi-open containing space near the open side of the umbrella-shaped foot frame, so that the umbrella-shaped foot frame bottom plate type forming piece 2 can be embedded in the air-tight layer 3, and the air-tight layer 3 can be prevented from moving or falling out, and the air-tightness is ensured. Therefore, the air-tight layer 3 is formed on the inner side of the concrete lining layer 1 of the underground chamber. 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 easy. The air-tightness can meet the use requirements under the premise that the fastening performance is ensured. Since the umbrella-shaped foot frame bottom plate type forming piece 2 is annular, the underground chamber lining can always be annular and isotropic. In addition, the air-tight layer 3 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 part can be directly replaced.

[0073] The air-tight layer 3 is made of a material that can be deformed under pressure. In this case, the air-tight layer 3 can be deformed under pressure, so that the embedding stability between the umbrella-shaped foot frame bottom plate type forming piece 2 and the air-tight layer 3 is stronger.

[0074] The edge of the air-tight layer 5 is provided with an embedding part matched with the semi-open containing space, and the air-tight layer 5 is arranged on the umbrella-shaped foot frame bottom plate type forming piece 2 through the embedding part. In this embodiment, the embedding part can be a protrusion matched with the semi-open containing space, so that the air-tight layer 3 and the umbrella-shaped foot frame bottom plate type forming piece 2 can be better matched.

[0075] The sealing lining structure is a sealing lining structure arranged on a cylindrical inner wall, and the umbrella-shaped foot frame bottom plate type forming piece 2 includes a plurality of umbrella-shaped foot frame bottom plate type forming pieces. The plurality of umbrella-shaped foot frame bottom plate type forming pieces are coaxial at the center of the circle, and the plurality of umbrella-shaped foot frame bottom plate type forming pieces are connected into one through the air-tight layer 3; the air-tight layer 3 is connected to the umbrella-shaped foot frame bottom plate type forming piece 2 through the semi-open containing space, so that the sealing lining structure becomes a cylindrical sealing lining structure. In this case, the air-tight layer 3 is arranged between the plurality of umbrella-shaped foot frame bottom plate type forming pieces to form a hollow, and the air-tight layer 3 is embedded between the plurality of umbrella-shaped foot frame bottom plate type forming pieces, so that the air-tight layer 3 can be prevented from moving between the umbrella-shaped foot frame bottom plate type forming pieces, and the air-tightness of the sealing lining structure formed by the umbrella-shaped foot frame bottom plate type forming piece 2 is further ensured. In addition, the plurality of umbrella-shaped foot frame bottom plate type forming pieces are equivalent to having a plurality of ribbed bars, so that the strength of the umbrella-shaped foot frame bottom plate type forming piece 2 can be ensured, and the possibility of deformation of the sealing lining structure can be reduced, and the service life is prolonged.

[0076] The plurality of ring-shaped foot support bottom plate type shaping members 2 are uniformly arranged along the axial direction of the cylindrical sealing inner lining mechanism.

[0077] underground chamber

[0078] The underground chamber provided by the present application comprises a concrete lining layer 1 and the sealing inner lining structure provided by the present application. The inner wall of the concrete lining layer 1 is cylindrical, and the sealing inner lining structure is fixedly arranged on the inner wall of the concrete lining layer 1 through the fixed bottom plate 7 of the foot support bottom plate type shaping member 2.

[0079] The foot support bottom plate type shaping member 2 provided by the embodiment of the present application can embed the air-tight layer 3 in the semi-open type containing space clamping portion formed by the foot support bottom plate type shaping member 2, wherein the height of the semi-open type containing space close to the connecting portion of the umbrella-shaped foot support is greater than the height of the semi-open type containing space close to the open side of the umbrella-shaped foot support, so that the semi-open type containing space can be embedded between the outer edge of the bulk foot support 8 and the air-tight layer 3, thereby avoiding the displacement or dislocation of the air-tight layer 3 and ensuring the air-tightness. Therefore, the foot support bottom plate type shaping member 2 is formed on the inner side of the concrete lining layer 1 of the underground chamber. The construction period of the foot support bottom plate type shaping member 2 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 of the foot support bottom plate type shaping member 2 can meet the use requirements under the premise that the fastening performance is guaranteed. Since the foot support bottom plate type shaping member 2 is ring-shaped, the inner lining of the underground chamber can always be ring-shaped and isotropic. In addition, the air-tight layer 3 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.

[0080] construction method of underground chamber

[0081] The construction method of the underground chamber provided by the present application comprises the following steps:

[0082] According to the inner diameter of the underground chamber, the ring-shaped foot support bottom plate type shaping member 2 is fixedly arranged on the inner wall of the underground chamber, so that the outer diameter of the ring-shaped foot support bottom plate type shaping member 2 is matched with the inner diameter of the underground chamber.

[0083] The air-tight layer 3 is embedded in the ring-shaped foot support bottom plate type shaping member 2 through the semi-open type containing space clamping portion, so that the inner wall of the underground chamber forms the sealing inner lining structure provided by the present application.

[0084] The scaffold base plate type fixing component 2 provided in this embodiment of the invention can embed an airtight layer 3 through the semi-open accommodating space it forms. Since the height of the semi-open accommodating space near the connecting part of the umbrella-shaped scaffold is greater than the height of the semi-open accommodating space near the open side of the umbrella-shaped scaffold, an interlocking mechanism can be formed between the outer edge of the bulk scaffold 8 and the airtight layer 3, thereby preventing displacement or detachment of the airtight layer 3 and ensuring airtightness. Therefore, it is formed inside the concrete lining layer 1 of the underground chamber. Its construction period is shorter than that of welded steel plates, its cost is lower, it has good sealing performance, and its components are easy to replace and maintain. Under the premise of ensuring tightness, its airtightness meets the usage requirements. Because the scaffold base plate type fixing component 2 is annular, it can ensure that the lining of the underground chamber remains annular and isotropic. In addition, the construction period for this airtight layer is short, and the components can be prefabricated. Compared with the traditional steel plate lining, which requires on-site welding, it can save a lot of construction time and the cost will be lower. During maintenance, the damaged parts can be directly replaced.

[0085] The process of fixing an annular scaffold base plate type shaping component 2 on the inner wall of the underground chamber according to the inner diameter of the underground chamber, so that the annular scaffold base plate type shaping component 2 fits the inner wall of the underground chamber, specifically includes the following steps:

[0086] Drill the first type of connection hole on the inner wall of the underground chamber;

[0087] Adjust the position of the scaffold base plate type fixing component 2 so that the second type of connection hole of the scaffold base plate type fixing component 2 corresponds to the position of the first type of connection hole on the inner wall of the underground chamber;

[0088] Screw the set bolts 5 into the first type of connection hole and the second type of connection hole at the same time, so that the base plate type fixing part 2 of the scaffold is fixed to the inner wall of the underground chamber.

[0089] In this case, the sealing lining structure can be stably fixed to the inner wall of the concrete lining layer 1 of the underground chamber through the first type of connection hole, the second type of connection hole, and the set bolt 5, and the cost is low.

[0090] The procedure, following the step of embedding the airtight layer 3 into the hollow space through a clamp with a semi-open accommodating space, thereby forming the sealed inner lining structure provided by the present invention on the inner wall of the underground chamber, further includes the following steps:

[0091] Gas storage tests were conducted in the underground chamber to determine its sealing performance.

[0092] Real-time monitoring is conducted to identify potential air leaks in the underground chambers.

[0093] In this case, the possible air leakage points of the underground chamber can be monitored in real time, and once air leakage occurs, it can be known and remedied in time.

[0094] In the step of monitoring the possible air leakage points of the underground chamber in real time, the possible air leakage points include: the connection between the air-tight layer 3 and the foot rack bottom plate type forming part 2, the connection between the connecting part of the foot rack bottom plate type forming part 2 and the umbrella-shaped part, the connection between the fixed bottom frame of the foot rack bottom plate type forming part 2 and the inner wall of the underground chamber, and one or more parts of the air-tight layer 3 itself. In this case, the possible air leakage points of the underground chamber can be accurately monitored in real time.

[0095] In the step of monitoring the possible air leakage points of the underground chamber in real time, the possible air leakage points include: the connection between the air-tight layer 3 and the foot rack bottom plate type forming part 2, the connection between the connecting part of the foot rack bottom plate type forming part 2 and the umbrella-shaped part, the connection between the fixed bottom frame of the foot rack bottom plate type forming part 2 and the inner wall of the underground chamber, and one or more parts of the air-tight layer 3 itself. In this case, the possible air leakage points of the underground chamber can be accurately monitored in real time.

[0096] At the possible air leakage points of the underground chamber, gas flow monitoring instruments are arranged, and each gas flow monitoring instrument is provided with a position label;

[0097] According to the position of the gas flow monitoring instrument, an alarm threshold is set for the gas flow monitoring instrument;

[0098] When the gas flow abnormal alarm occurs, the position of the air leakage point of the underground chamber is determined according to the position label of the alarm gas flow monitoring instrument.

[0099] In this case, once the possible air leakage points of the underground chamber leak, the air leakage point of the underground chamber 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.

[0100] Although the preferred embodiments of the present 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 changes and modifications falling within the scope of the present application.

[0101] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A sealed liner structure, characterized by, The sealing lining structure comprises an air-tight layer (3) and at least one foot-stand bottom plate type shaping piece (2), The foot-stand bottom plate type shaping piece (2) is annular, and comprises a fixed bottom plate (7) and an umbrella-shaped foot-stand (8), The fixed bottom plate (7) has a length direction and a width direction, The umbrella-shaped foot-stand (8) has a length direction and a width direction, and is provided with a connecting part and an umbrella-shaped part, the umbrella-shaped part is arranged on the top of the connecting part, and the umbrella-shaped part has protrusions on both sides of the length direction of the umbrella-shaped foot-stand (8) towards the connecting part, The umbrella-shaped foot-stand (8) is fixedly connected to the fixed bottom plate (7) along the length direction of the fixed bottom plate (7) by the connecting part, so that a clamping opening with a semi-open containing space is formed between the umbrella-shaped part of the umbrella-shaped foot-stand (8) and the fixed bottom plate (7), the height of the semi-open containing space near the connecting part of the umbrella-shaped foot-stand (8) is h1, and the height of the semi-open containing space near the open side of the umbrella-shaped foot-stand (8) is h2, h1>h2; The air-tight layer (3) is arranged on the foot-stand bottom plate type shaping piece (2) through the clamping opening with the semi-open containing space; The connecting part and the umbrella-shaped part of the umbrella-shaped foot-stand (8) are integrally formed; The umbrella-shaped foot-stand (8) is fixedly connected to the fixed bottom plate (7) by a fastening bolt, or the umbrella-shaped foot-stand (8) is integrally formed with the fixed bottom plate (7).

2. The sealed liner structure of claim 1, wherein, The foot-stand bottom plate type shaping piece (2) is made of corrosion-resistant steel.

3. The sealing lining structure according to claim 1, wherein The foot-stand bottom plate type shaping piece (2) is annular and integrally formed, Or, The foot-stand bottom plate type shaping piece (2) comprises a plurality of foot-stand bottom plate type shaping components, and the foot-stand bottom plate type shaping components are spliced together from the width direction to form the annular foot-stand bottom plate type shaping piece (2).

4. The sealed liner structure of claim 1, wherein, The air-tight layer (3) is made of a material that can be deformed under pressure.

5. The sealed liner structure of claim 1, wherein, The edge of the air-tight layer (3) is provided with an embedding part embedded in the clamping opening with the semi-open containing space, and the air-tight layer (3) is arranged on the foot-stand bottom plate type shaping piece (2) through the embedding part.

6. The sealed liner structure of claim 1, wherein, The sealing lining structure is a sealing lining structure arranged on a cylindrical inner wall, The foot-stand bottom plate type shaping piece (2) comprises a plurality of The centers of the plurality of annular foot-stand bottom plate type shaping pieces (2) are coaxial, and the plurality of annular foot-stand bottom plate type shaping pieces (2) are connected together by the air-tight layer (3); The air-tight layer (3) is connected to the foot-stand bottom plate type shaping piece (2) through the clamping opening with the semi-open containing space, so that the sealing lining structure is a cylindrical sealing lining structure.

7. The sealed liner structure of claim 6, wherein, The plurality of annular foot-stand bottom plate type shaping pieces (2) are uniformly arranged along the axial direction of the cylindrical sealing lining structure.

8. An underground chamber, characterized in that, The sealing lining structure comprises a concrete lining layer (1) and the sealing lining structure according to any one of claims 1-7, The inner wall of the concrete lining layer (1) is cylindrical, The sealing lining structure is fixedly arranged on the inner wall of the concrete lining layer (1) through the fixed bottom plate (7) of the footboard type forming piece (2).

9. A method of constructing an underground chamber, characterised in that, The method comprises the following steps: According to the inner diameter of the underground chamber, the footboard type forming piece (2) is fixedly arranged on the inner wall of the underground chamber in a ring shape, so that the outer diameter of the ring-shaped footboard type forming piece (2) is matched with the inner diameter of the underground chamber. The air-tight layer (3) is embedded in the ring-shaped footboard type forming piece (2) through the clamp with a semi-open containing space, so that the inner wall of the underground chamber forms the sealing lining structure according to any one of claims 1-7.

10. The method of mining a subterranean chamber as claimed in claim 9 wherein, According to the inner diameter of the underground chamber, the footboard type forming piece (2) is fixedly arranged on the inner wall of the underground chamber in a ring shape, so that the outer diameter of the ring-shaped footboard type forming piece (2) is matched with the inner diameter of the underground chamber. The first connecting hole is drilled on the inner wall of the underground chamber. The position of the footboard type forming piece (2) is adjusted, so that the second connecting hole of the footboard type forming piece (2) corresponds to the position of the first connecting hole on the inner wall of the underground chamber. The stud bolt (5) is screwed into the first connecting hole and the second connecting hole at the same time, so that the footboard type forming piece (2) is fixed on the inner wall of the underground chamber.

11. The method according to claim 9, wherein, After the step of embedding the air-tight layer (3) in the ring-shaped footboard type forming piece (2) through the clamp with a semi-open containing space, so that the inner wall of the underground chamber forms the sealing lining structure according to any one of claims 1-7, the method further comprises the following steps: The sealing performance of the underground chamber is determined by carrying out a gas storage test on the underground chamber. The possible air leakage points of the underground chamber are monitored in real time.

12. The method of mining a subterranean chamber as claimed in claim 11 wherein, During the step of monitoring the possible air leakage points of the underground chamber in real time, the possible air leakage points include one or more of the following: the connection between the air-tight layer (3) and the footboard type forming piece (2), the connection between the connecting part and the umbrella-shaped part of the footboard type forming piece (2), the connection between the fixed bottom plate (10) of the footboard type forming piece (2) and the inner wall of the underground chamber, and a part of the air-tight layer (3) itself.

13. The method according to claim 11, wherein, The step of monitoring the possible air leakage points of the underground chamber in real time comprises the following steps: A gas flow monitoring instrument is arranged at the possible air leakage points of the underground chamber, and a position label is set for each gas flow monitoring instrument. An alarm threshold value 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 air leakage point of the underground chamber is determined according to the position label of the alarm gas flow monitoring instrument.

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