Sealing plug structure of underground water-sealed stone cave oil depot

Abstract

The utility model discloses a sealing plug structure of an underground water-sealed cavern oil depot, which relates to the technical field of underground water-sealed cavern construction and comprises a plugging component and a reinforcing support component. The plugging assembly comprises two groups of arc-shaped plugging covers, a plugging piece and a reinforcing piece, and the plugging piece and the reinforcing piece are respectively embedded into an external rock wall; the reinforced supporting assembly comprises a plurality of sets of supporting columns arranged between the two sets of plugging pieces, and filling pieces are arranged between the supporting columns. The two arc-shaped plugging covers are arranged, and the plugging pieces and the reinforcing pieces are arranged on the arc-shaped plugging covers, so that the connecting strength between the arc-shaped plugging covers and the rock wall of the roadway is improved, and the anti-pressure ability of the arc-shaped plugging covers is improved; the local pressure resistance and the overall pressure resistance of the joint of the arc-shaped plugging cover and the supporting column are improved, the arc-shaped plugging cover, the plugging piece, the reinforcing piece and the supporting column are connected into a whole through the filling piece, the overall compressive strength is guaranteed, a large number of roadways do not need to be excavated, the construction amount is reduced, and the construction cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of underground water-sealed cavern construction technology, specifically to a sealing plug structure for an underground water-sealed rock cavern oil depot. Background Technology

[0002] An underground water-sealed oil cavern is a man-made chamber of a specific shape and volume, excavated from rock below the groundwater level, used to store petroleum and other products. During construction, the oil storage chambers of an underground water-sealed oil cavern are connected to the surface through a first connecting tunnel, a vertical shaft, and a second connecting tunnel. After construction, sealing plugs are used to isolate each oil storage chamber, and sealing plugs are also used to seal the inlet and outlet shafts, forming independent, sealed storage spaces. Therefore, the sealing plugs in an underground water-sealed oil cavern play a crucial role in isolating the cavern from the external environment.

[0003] Utility model patent CN206205934U discloses a sealing plug for an underground water-sealed oil cavern tunnel, comprising a sealing plug body embedded in the rock mass between a first connecting tunnel and a second connecting tunnel. The sealing plug body has a frustum-shaped structure, with at least six filling grouting pipes and four venting pipes arranged at the arch of the sealing plug body. At least fifteen contact grouting pipes are arranged around the sealing plug body, and the filling grouting pipes are equipped with grout-stopping plugs. The filling grouting pipes, the venting pipes, and the contact grouting pipes all pass through concrete. The contact surface with the surrounding rock is at least 10cm; the sealing plug is a reinforced concrete sealing plug with a frustum structure, which can withstand the pressure between different caverns; the setting of filling grouting pipe, venting pipe and contact grouting pipe ensures that the part in contact with the rock mass will not leak, thus achieving isolation of the oil storage cavern; in this patent, the sealing plug has a frustum structure, which requires more excavation, resulting in further loss of rock mass stress, as well as an increase in construction time and cost. During the concrete pouring process, the large volume of concrete is prone to generating heat of hydration, which leads to a decrease in concrete strength and greater construction difficulty. Utility Model Content

[0004] The main purpose of this utility model is to provide a sealing plug structure for underground water-sealed rock cavern oil depots, which solves the problems of large excavation volume, high construction difficulty and high construction cost of existing frustum-shaped oil cavern sealing plugs.

[0005] To achieve the above objectives, this utility model provides a sealing plug structure for an underground water-sealed rock cavern oil depot, comprising:

[0006] The sealing assembly includes two sets of arc-shaped sealing covers arranged opposite each other and sealing elements disposed on the edges of the arc-shaped sealing covers; the concave ends of the two sets of arc-shaped sealing covers are arranged opposite each other; multiple sets of reinforcing elements are spaced apart on the edges of the arc-shaped sealing covers; the sealing elements and the reinforcing elements are respectively embedded in the external rock wall;

[0007] The reinforced support assembly includes multiple sets of support columns disposed between two sets of sealing components; a filler is provided between the support columns.

[0008] As a further improvement of this utility model, the arc-shaped sealing cover is provided with reinforcing mesh inside, and the edge of the arc-shaped sealing cover abuts against the external rock wall.

[0009] As a further improvement of this utility model, the reinforcing mesh includes circular stirrups located on the periphery and arc-shaped main bars intersecting within the circular stirrups; fine mesh is provided on both sides of the arc-shaped main bars.

[0010] As a further improvement of this utility model, the sealing component includes a sealing ring; the sealing ring and the large opening end of the arc-shaped sealing cover are located on the same plane, a reinforcing mesh ring is provided inside the sealing ring, and a water-stop strip is provided on the outer wall of the sealing ring.

[0011] As a further improvement of this utility model, the reinforcing member includes a reinforcing column; the reinforcing column is provided with a reinforcing mesh column, the reinforcing mesh column is connected to the reinforcing mesh rib, the reinforcing column is arranged at intervals along the circumference of the arc-shaped sealing cover, the reinforcing column is inclined relative to the arc-shaped sealing cover, and the radial direction of the reinforcing column is towards the center of the arc-shaped sealing cover.

[0012] As a further improvement of this utility model, the support column includes a support mesh; the support mesh is connected to the reinforcing mesh; the filling element includes plain concrete filled in two sets of arc-shaped sealing covers.

[0013] The beneficial effects of this utility model are reflected in:

[0014] By setting up two sets of arc-shaped sealing covers and installing sealing and reinforcing components on them, the connection strength between the arc-shaped sealing covers and the roadway rock wall is improved, thus enhancing the compressive strength of the arc-shaped sealing covers. By connecting the two sets of arc-shaped sealing covers with support columns, the local compressive strength and overall compressive strength at the connection between the arc-shaped sealing covers and the support columns are improved. Furthermore, by using filling components, the arc-shaped sealing covers, sealing components, reinforcing components, and support columns are connected as a whole, ensuring overall compressive strength. This method eliminates the need for extensive roadway excavation, reducing construction work and lowering construction costs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the connection structure between the sealing plug structure and the rock wall of an underground water-sealed rock cave oil depot according to this utility model;

[0016] Figure 2 This is a schematic diagram of the overall structure of a sealing plug structure for an underground water-sealed rock cavern oil depot according to the present invention;

[0017] Figure 3 This is a schematic diagram of the internal support mesh structure of a sealing plug structure for an underground water-sealed rock cave oil depot according to this utility model;

[0018] Explanation of reference numerals in the attached figures:

[0019] 1. Arc-shaped sealing cover; 2. Sealing component; 3. Reinforcing component; 4. Support column; 5. Filler component; 6. Reinforcing mesh; 7. Rock wall; 8. Circular stirrup; 9. Arc-shaped main reinforcement; 10. Fine reinforcement mesh; 11. Sealing ring; 12. Reinforcing mesh ring; 13. Waterstop strip; 14. Reinforcing vertical reinforcement; 15. Reinforcing ring reinforcement; 16. Reinforcing column; 17. Reinforcing mesh column; 18. Straight reinforcement; 19. Reinforcing frame; 20. Supporting mesh. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the described embodiments are merely some, not all, of the embodiments of this utility model. Unless otherwise specified, the embodiments and features described in this application can be combined with each other. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0021] In one embodiment, see Figure 1 , 2 This utility model discloses a sealing plug structure for an underground water-sealed rock cave oil depot, comprising a sealing component and a reinforcing support component.

[0022] The sealing assembly includes two sets of arc-shaped sealing covers 1 arranged opposite each other and sealing elements 2 arranged on the edge of the arc-shaped sealing covers 1. The concave ends of the two sets of arc-shaped sealing covers 1 are arranged opposite each other. Multiple sets of reinforcing elements 3 are arranged at intervals on the edge of the arc-shaped sealing covers 1. The sealing elements 2 and reinforcing elements 3 are respectively embedded in the outer rock wall 7. The reinforcement support assembly includes multiple sets of support columns 4 arranged between the two sets of sealing elements 2. Filler elements 5 are arranged between the support columns 4.

[0023] Further, see Figure 3 The arc-shaped sealing cover 1 is equipped with a reinforcing mesh 6 inside, and the edge of the arc-shaped sealing cover 1 abuts against the outer rock wall 7.

[0024] Preferably, the arc-shaped sealing cover 1 is a hollow hemisphere, and the diameter of the arc-shaped sealing cover 1 is consistent with the inner diameter of the outer sealed roadway.

[0025] Further, see Figure 3 The reinforcing mesh 6 includes a circular stirrup 8 located on the periphery and an arc-shaped main bar 9 intersecting within the circular stirrup 8. Fine reinforcing mesh 10 is provided on both sides of the arc-shaped main bar 9.

[0026] Preferably, the circular stirrups 8 and the arc-shaped main reinforcement 9 are spot-welded together and then tied together with iron wire, and the fine mesh 10 is tied to the arc-shaped main reinforcement 9 with iron wire.

[0027] In the above configuration, the arched end of the arc-shaped sealing cover 1 faces the inside of the tunnel. After the concrete is poured, the outer edge of the arc-shaped sealing cover 1 is connected to the inner wall of the tunnel to provide support for sealing the tunnel. The circular stirrups 8 and the arc-shaped main reinforcement 9 inside the arc-shaped sealing cover 1 improve the compressive strength of the arc-shaped sealing cover 1.

[0028] Further, see Figure 2 The sealing component 2 includes a sealing ring 11, which is located on the same plane as the large end of the arc-shaped sealing cover 1. A reinforcing mesh ring 12 is provided inside the sealing ring 11, and a water-stop strip 13 is provided on the outer wall of the sealing ring 11.

[0029] Preferably, the reinforcing mesh ring 12 includes reinforcing vertical ribs 14 and reinforcing ring ribs 15 disposed on the reinforcing vertical ribs 14. The reinforcing vertical ribs 14 and the reinforcing ring ribs 15 are spot welded together and then tied together with iron wire in a cross pattern.

[0030] Preferably, the end of the arc-shaped main reinforcement 9 that extends beyond the circular stirrup 8 is adjusted to be perpendicular to the circular stirrup 8 to form a reinforcing vertical reinforcement 14.

[0031] In the above setup, after the reinforced mesh ring 12 is poured with concrete, it is connected to the inner wall of the tunnel. When sealing the ring 11 during construction, a groove needs to be opened in the inner wall of the tunnel in advance, the reinforced mesh ring 12 is placed into the groove, and then concrete is poured. The concrete is connected to the inner wall of the tunnel, and the sealing is ensured by the waterstop strip 13.

[0032] Further, see Figure 1 , 2 The reinforcing member 3 includes a reinforcing column 16, and a reinforcing mesh column 17 is provided inside the reinforcing column 16. The reinforcing mesh column 17 is connected to the reinforcing mesh 6. The reinforcing columns 16 are spaced apart along the circumference of the arc-shaped sealing cover 1. The reinforcing columns 16 are inclined relative to the arc-shaped sealing cover 1, and the radial direction of the reinforcing columns 16 is towards the center of the arc-shaped sealing cover 1.

[0033] Preferably, the reinforced grid column 17 is formed by multiple sets of straight bars 18 and an outer steel reinforcement frame 19.

[0034] Further, see Figure 1 , 2 The support column 4 includes a support mesh 20, which is connected to a reinforcing mesh 6; the filler 5 includes plain concrete filled in two sets of arc-shaped sealing covers 1.

[0035] Preferably, the supporting mesh reinforcement 20 has the same structure as the reinforcing mesh column 17. Multiple sets of supporting mesh reinforcement 20 are arranged at intervals along the horizontal direction. The supporting mesh reinforcement 20 is arranged from the center of the arc-shaped mesh cover to the surrounding area. The supporting mesh reinforcement 20 is a rectangular column structure, which is made by binding rectangular steel hoops around four sets of steel bars.

[0036] In the above configuration, the reinforcing column 16 is inclined to the inner wall of the roadway to provide support for the arc-shaped sealing cover 1 and improve the compressive strength of the arc-shaped sealing cover 1. The supporting mesh 20 is provided between the two sets of arc-shaped sealing covers 1 and provides support from the concave end of the arc-shaped sealing cover 1. This improves the overall compressive strength of the arc-shaped sealing cover 1 and enhances the local support capacity at the connection point between the supporting mesh 20 and the arc-shaped mesh cover.

[0037] In this embodiment, two sets of grooves embedded in the rock wall 7 are opened at intervals at the sealing position in the tunnel. Vertical grooves are opened at intervals and at an incline between the two sets of grooves. The reinforcing mesh 6 is located in the tunnel, the reinforcing mesh ring 12 is located in the groove, the reinforcing mesh column 17 is located in the vertical groove, and the supporting mesh 20 is located between the two sets of reinforcing mesh 6 to complete the construction of the steel mesh frame. The waterstop strip 13 is installed on the inner wall of the groove. After the template is erected at the arch end of the two sets of reinforcing mesh 6, concrete is injected under pressure between the two sets of reinforcing mesh 6 and fully vibrated. For the groove and vertical groove at the top of the tunnel, grouting pipes need to be installed separately to ensure full grouting.

[0038] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A sealing plug structure for an underground water-sealed rock cavern oil depot, characterized in that, include: The sealing assembly includes two sets of arc-shaped sealing covers (1) arranged opposite to each other, and sealing elements (2) arranged on the edge of the arc-shaped sealing covers (1); the concave ends of the two sets of arc-shaped sealing covers (1) are arranged opposite to each other; multiple sets of reinforcing elements (3) are provided at intervals on the edge of the arc-shaped sealing covers (1); the sealing elements (2) and the reinforcing elements (3) are respectively embedded in the external rock wall (7); The reinforced support assembly includes multiple sets of support columns (4) disposed between two sets of sealing elements (2); the support columns (4) are provided with filler elements (5).

2. The sealing plug structure for an underground water-sealed rock cavern oil depot according to claim 1, characterized in that: The arc-shaped sealing cover (1) is provided with reinforcing mesh (6) inside, and the edge of the arc-shaped sealing cover (1) abuts against the outer rock wall (7).

3. The sealing plug structure for an underground water-sealed rock cavern oil depot according to claim 2, characterized in that: The reinforcing mesh (6) includes a circular stirrup (8) located on the periphery and an arc-shaped main bar (9) intersecting within the circular stirrup (8); fine mesh (10) is provided on both sides of the arc-shaped main bar (9).

4. The sealing plug structure for an underground water-sealed rock cavern oil depot according to claim 3, characterized in that: The sealing component (2) includes a sealing ring (11); the sealing ring (11) and the large end of the arc-shaped sealing cover (1) are located on the same plane, the sealing ring (11) is provided with a reinforcing mesh ring (12), and the sealing ring (11) is provided with a water-stop strip (13) on its outer wall.

5. The sealing plug structure for an underground water-sealed rock cavern oil depot according to claim 4, characterized in that: The reinforcing member (3) includes a reinforcing column (16); the reinforcing column (16) is provided with a reinforcing mesh column (17), the reinforcing mesh column (17) is connected to the reinforcing mesh rib (6), the reinforcing column (16) is spaced apart along the circumference of the arc-shaped sealing cover (1), the reinforcing column (16) is inclined relative to the arc-shaped sealing cover (1), and the radial direction of the reinforcing column (16) is towards the center of the arc-shaped sealing cover (1).

6. The sealing plug structure for an underground water-sealed rock cavern oil depot according to claim 5, characterized in that: The support column (4) includes a support mesh (20); the support mesh (20) is connected to the reinforcing mesh (6); the filler (5) includes plain concrete filled in two sets of arc-shaped sealing covers (1).

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