Bedrock freezing vertical shaft outer layer steel plate composite shaft wall and steel plate descending assembling device

Abstract

The invention provides a bedrock freezing vertical shaft outer-layer steel plate composite well wall and steel plate descending assembling device, which comprises an inner-layer well wall and an outer-layer well wall, a thin interlayer made of a metal plate is arranged between the inner-layer well wall and the outer-layer well wall, and meanwhile, the metal plate is also used as a template for pouring the outer-layer well wall. The thin interlayer made of the metal plate is adopted, the water sealing effect of the thin interlayer is better, meanwhile, the metal plate can also serve as a formwork for pouring of the outer-layer well wall, the workload of formwork erecting and disassembling during pouring of the outer-layer well wall is greatly reduced, and the metal plate serving as the formwork is easier to align and straighten; the construction mode is relatively simple and convenient, and the construction period can be shortened.

Description

Technical Field

[0001] The present invention relates to the technical field of construction of freezing vertical shafts in bedrock, and particularly relates to an outer steel plate composite shaft lining for a freezing vertical shaft in bedrock and a device for assembling the steel plate underground. Background Art

[0002] The statements herein only provide background art related to the present invention and do not necessarily constitute prior art.

[0003] For current freezing vertical shafts in bedrock, by adopting a composite shaft lining, the composite shaft lining is divided into an inner shaft lining, an outer shaft lining, and a thin interlayer located between the inner and outer shaft linings. The outer shaft lining mainly bears the freezing pressure and has a temporary support function, etc.; the inner shaft lining bears the hydrostatic pressure, and at the same time, the inner and outer shaft linings jointly bear the ground pressure.

[0004] When constructing the composite shaft lining, usually the formwork is first supported in the shaft, and then the outer shaft lining is poured. After the outer shaft lining solidifies, the formwork is removed and the thin interlayer is arranged, and then the formwork is supported again to pour the inner shaft lining. This construction method is relatively cumbersome, has a long construction period, and is not convenient enough. Summary of the Invention

[0005] To solve the deficiencies mentioned in the above background art, the present invention particularly provides an outer steel plate composite shaft lining for a freezing vertical shaft in bedrock and a device for assembling the steel plate underground that are convenient for construction.

[0006] To achieve the above object, the technical solution of the present invention is realized as follows: An outer steel plate composite shaft lining for a freezing vertical shaft in bedrock includes an inner shaft lining and an outer shaft lining. A thin interlayer made of a metal plate is arranged between the inner shaft lining and the outer shaft lining, and at the same time, the metal plate also serves as the formwork for pouring the outer shaft lining.

[0007] Further, a plurality of anchor bars are arranged on one side of the thin interlayer corresponding to the outer shaft lining.

[0008] Further, the outer shaft lining is made of cast-in-place plain concrete.

[0009] Further, the thin interlayer is composed of a plurality of metal cylinders combined from top to bottom.

[0010] A device for assembling the steel plate underground is used for assembling the thin interlayer composed of a plurality of metal cylinders as described above, and includes an inner support component corresponding to each metal cylinder. The inner support component includes a main rod body and a plurality of inner support plates annularly distributed around the main rod body. A telescopic device is arranged between the main rod body and the corresponding inner support plate to control the corresponding inner support plate to move towards and away from the main rod body, so as to tightly press against the inner wall of the corresponding metal cylinder from the inside of the corresponding metal cylinder and release the tight pressing against the inner wall of the metal cylinder;

[0011] When the upper and lower metal cylinders are butted together, the corresponding two main rod bodies are detachably assembled together.

[0012] Further, the telescopic device includes a screw rod fixedly connected to the inner support plate and a screw barrel rotatably arranged on the main rod body. The screw rod is in spiral fit with the screw barrel. The inside of the main rod body is hollow, and one end of the screw barrel extends into the inside of the main rod body.

[0013] A driving component is further arranged on the main rod body, and the driving component is used to drive each screw barrel to rotate.

[0014] It further includes a guiding member connected to the main rod body and the inner support plate, and is used to prevent the inner support plate from rotating relative to the main rod body.

[0015] Further, the driving component includes a rotating member and a transmission member. The transmission member includes a first bevel gear arranged at the end of the screw barrel and a second bevel gear meshing with each first bevel gear at the same time. The rotating member is used to drive the second bevel gear to rotate, so as to drive the corresponding screw barrel to rotate by each first bevel gear.

[0016] Further, the rotating member is a rotating rod rotatably arranged in the main rod body. The two ends of the rotating rod respectively extend out of the top and bottom of the main rod body, and are detachably connected to the rotating rods on the adjacent main rod bodies, and can drive the adjacent rotating rods to rotate. The rotating rod is connected to the second bevel gear, and the rotation of the rotating rod can drive the second bevel gear to rotate.

[0017] Further, the rotating rod can move up and down in the main rod body. The second bevel gear is located above the first bevel gear and is arranged on the rotating rod and can move up and down with the rotating rod. When lifting the inner support assembly, the lifting point is arranged on the rotating rod.

[0018] Further, it further includes a plurality of abutting components arranged at the wellhead. The abutting components include a telescopic unit and an abutting plate arranged at the telescopic end of the telescopic unit. Each telescopic unit drives the abutting plate to move, abuts against the outside of the metal cylinder at the wellhead, cooperates with the inner support assembly to fix the metal cylinder at the wellhead, and positions the metal cylinder.

[0019] The beneficial effects of the present invention are embodied in:

[0020] In the present invention, a thin interlayer made of metal plates is adopted, and its water sealing effect is better. At the same time, the metal plates can also serve as templates for pouring the outer well wall, greatly reducing the workload of formwork erection and removal during the pouring of the outer well wall, and it is easier to align and straighten the metal plates as templates; this construction method is relatively simple and convenient, and can shorten the construction period. Description of the Drawings

[0021] In the drawings:

[0022] Figure 1 This is the working state diagram of the steel plate downhole assembly device of the present invention;

[0023] Figure 2 This is the structural schematic diagram of the thin interlayer described in the present invention;

[0024] Figure 3 This is the structural schematic diagram of the inner support assembly described in the present invention;

[0025] Figure 4 This is the semi-sectional view of the plate of the inner support assembly described in the present invention.

[0026] Explanation of reference numerals in the drawings:

[0027] 1. Thin interlayer; 11. Anchor bar; 12. Metal cylinder;

[0028] 2. Inner support assembly; 21. Main rod body; 22. Inner support plate; 23. Screw rod; 24. Screw barrel; 241. First bevel gear; 25. Outer sleeve; 26. Guide sleeve; 27. Guide rod; 28. Rotating rod; 281. Second bevel gear; 282. Limit plate;

[0029] 3. Abutting member; 31. Telescopic unit; 32. Abutting plate. Detailed implementation manners

[0030] The following will further describe the present invention in detail with reference to the drawings and embodiments. Obviously, the described embodiments are only a part of the embodiments of the invention, rather than all the embodiments. Without conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the invention without creative efforts shall fall within the protection scope of the invention.

[0031] See Figures 1 to 4 。

[0032] The present invention discloses a composite shaft wall of an outer steel plate for a bedrock freezing vertical shaft, including an inner shaft wall and an outer shaft wall. A thin interlayer 1 made of a metal plate is arranged between the inner shaft wall and the outer shaft wall, and at the same time, the metal plate also serves as a formwork for pouring the outer shaft wall.

[0033] In the present invention, the thin interlayer 1 made of a metal plate has better water sealing effect. At the same time, the metal plate can also serve as a formwork for pouring the outer shaft wall, greatly reducing the workload of formwork erection and removal during the pouring of the outer shaft wall, and it is easier to align and straighten the metal plate as a formwork; this construction method is relatively simple and convenient, and can shorten the construction period.

[0034] Preferably, the thin interlayer 1 is made of a steel plate with a thickness of 10-15 mm.

[0035] In one embodiment, a plurality of anchor bars are provided on one side of the corresponding outer wall of the thin interlayer to increase the bonding degree with the outer wall.

[0036] In one embodiment, the outer wall is made of cast-in-place plain concrete. With this design, the cast-in-place plain concrete can be in close contact with the original rock with a better "biting degree", increasing the "embracing force" of the shaft, reducing the vertical force on the outer wall, so that it is no longer necessary to tie steel bars to the outer wall, further improving the construction convenience.

[0037] In one embodiment, the thin interlayer 1 is composed of a plurality of metal cylinders 12 from top to bottom. With this design, since it is rather difficult to manufacture and transport an integral metal thin interlayer 1, by splitting it into a plurality of metal cylinders 12, the metal cylinders 12 can be prefabricated on the ground, which is simple in operation, and is convenient for assembly operations such as hoisting, lowering, and welding.

[0038] Preferably, the adjacent upper and lower metal cylinders 12 are welded by full welding to ensure water tightness.

[0039] Preferably, some anti-corrosion treatments can be carried out on the thin interlayer 1. Specific anti-corrosion means can be any of the existing anti-corrosion means, and no specific limitation is made here.

[0040] The present invention also discloses a steel plate downhole assembly device for assembling the thin interlayer 1 composed of a plurality of metal cylinders 12 as described above, including an inner support assembly 2 corresponding to each metal cylinder 12. The inner support assembly 2 includes a main rod body 21 and a plurality of inner support plates 22 annularly distributed around the main rod body 21. A telescopic device is provided between the main rod body 21 and the corresponding inner support plate 22 for controlling the corresponding inner support plate 22 to move towards and away from the main rod body 21, so as to tightly press against the inner wall of the corresponding metal cylinder 12 from the inside of the metal cylinder 12 and release the tight pressing against the inner wall of the metal cylinder 12;

[0041] When the upper and lower metal cylinders 12 are butted together, the corresponding two main rod bodies 21 are detachably assembled together.

[0042] In specific implementation, through the setting of the inner support assembly 2, on the one hand, the inner support assembly 2 can tightly press against the inner wall of the metal cylinder 12 from the inside of the metal cylinder 12, so as to realize the hoisting of the metal cylinder 12 (no need to set lifting rings on the metal cylinder 12), facilitating the splicing between a plurality of metal cylinders 12. At the same time, the inner support assembly 2 can also be directly used as a support for the thin interlayer 1 to support the thin interlayer 1 as a formwork during the pouring process of the outer wall.

[0043] In one embodiment, the telescopic device includes a screw rod 23 fixedly connected to the inner support plate 22, and a screw barrel 24 rotatably disposed on the main rod body 21. The screw rod 23 is in screw fit with the screw barrel 24. The interior of the main rod body 21 is hollow, and one end of the screw barrel 24 extends into the interior of the main rod body 21;

[0044] A driving component is further disposed on the main rod body 21, and the driving component is used to drive each screw barrel 24 to rotate;

[0045] It further includes a guiding member, which is connected to the main rod body 21 and the inner support plate 22 and is used to prevent the inner support plate 22 from rotating relative to the main rod body 21. Through the relative rotation of the screw barrel 24 and the screw rod 23, the inner support plate 22 is further pushed to move.

[0046] Preferably, an outer sleeve 25 is disposed at the position of the main rod body 21 corresponding to each screw barrel 24. The outer sleeve 25 is rotatably fitted with the screw barrel 24 and sleeved outside the screw barrel 24 for supporting the screw barrel 24.

[0047] Preferably, the guiding member includes a guiding sleeve 26 fixed on the main rod body 21 and a guiding rod 27 fixed on the inner support plate 22. One end of the guiding rod 27 is slidably disposed in the guiding sleeve 26.

[0048] In one embodiment, the driving component includes a rotating member and a transmission member. The rotating member is used to drive the transmission member to rotate. The transmission member includes a first bevel gear 241 disposed at the end of the screw barrel 24 and a second bevel gear 281 that meshes with each first bevel gear 241 at the same time. The rotating member is used to drive the second bevel gear 281 to rotate, so that each first bevel gear 241 drives the corresponding screw barrel 24 to rotate.

[0049] Preferably, the rotating member can be a motor, and the motor drives the second bevel gear 281 to rotate.

[0050] In one embodiment, in order to further reduce costs, the rotating member is a rotating rod 28 rotatably disposed in the main rod body 21. Both ends of the rotating rod 28 extend out of the top and bottom of the main rod body 21 respectively, and are detachably connected to the rotating rod 28 on the adjacent main rod body 21 and can drive the adjacent rotating rod 28 to rotate. The rotating rod 28 is connected to the second bevel gear 281, and the rotation of the rotating rod 28 can drive the second bevel gear 281 to rotate.

[0051] In specific implementation, the staff can rotate the rotating rod 28 externally through an external power device or manually with the aid of tools (such as pipe wrenches), thereby driving the rotation of the second bevel gear 281 and further pushing the inner support plate 22 to move, so that the inner support plate 22 abuts against the inner wall of the metal cylinder 12; after the inner support plate 22 abuts against the inner wall of the metal cylinder 12, the inner support plate 22 and the metal cylinder 12 are hoisted above another metal cylinder 12 by hoisting, and then the two metal cylinders 12 are welded together by welding. When the pouring is completed, the rotating rod 28 can be reversed by means of an external force, and each rotating rod 28 rotates simultaneously to release the abutment of each inner support plate 22 against the inner wall of each metal cylinder 12, and then each inner support assembly 2 can be directly hoisted out by hoisting, which is relatively convenient to use.

[0052] Preferably, the rotating rods 28 on two adjacent main rod bodies 21 can be connected by means of inserting pins or bolts.

[0053] In one embodiment, the rotating rod 28 can move up and down within the main rod body 21. The second bevel gear 281 is located above the first bevel gear 241 and is arranged on the rotating rod 28 and can move up and down together with the rotating rod 28. When hoisting the inner support assembly 2, the hoisting point is set on the rotating rod 28. With this design, since the rotating rod 28 needs to be connected to the adjacent rotating rod 28, the reserved connection space on the rotating rod 28 can be used as the hoisting point; in addition, when hoisting, by setting the hoisting point on the rotating rod 28, the rotating rod 28 will move upward within the main rod body 21, bringing the second bevel gear 281 into contact and meshing with the first bevel gear 241. At this time, the rotation of the rotating rod 28 caused by various reasons such as external forces during the hoisting process will have no impact on the inner support plate 22, avoiding reducing the abutting force between the inner support plate 22 and the inner wall of the metal cylinder 12. At the same time, when assembling with the metal cylinder 12 below, during the alignment process of the metal cylinder 12, it is not easy to disturb the abutting force of the lower inner support plate 22 (during the alignment process of the metal cylinder 12, the two adjacent rotating rods 28 are first butted, and then the metal cylinder 12 is aligned. During the alignment process, due to the hoisting force on the two adjacent rotating rods 28, the rotating rod 28 will move upward).

[0054] Preferably, a limiting plate 282 is arranged on the rotating rod 28. By abutting against the main rod body 21, the limiting plate 282 limits the vertical moving distance of the rotating rod 28 relative to the main rod body 21, and at the same time conducts the hoisting force to the main rod body 21, and finally transmits it to the inner support plate 22 through each guiding member, outer sleeve 25, screw barrel 24 and screw rod 23.

[0055] In one embodiment, it further includes a plurality of abutting components 3 arranged at the wellhead. The abutting component 3 includes a telescopic unit 31 and an abutting plate 32 arranged at the telescopic end of the telescopic unit 31. Each telescopic unit 31 drives the abutting plate 32 to move and abut against the outside of the metal cylinder 12 at the wellhead, cooperate with the inner support assembly 2 to fix the metal cylinder 12 at the wellhead, and position the metal cylinder 12. With this design, after assembling one section of the metal cylinder 12, the corresponding section of the metal cylinder 12 can be lowered into the well. The abutting component 3 plays the role of fixing and centering the bottom metal cylinder 12.

[0056] Preferably, the telescopic unit 31 can be a hydraulic telescopic rod or an electric telescopic rod.

[0057] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

[0058] It should be noted that if there are directional indications (such as up and down) in the embodiments of the invention, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0059] In addition, the meaning of "and / or" appearing throughout the text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, or solution B, or the solution where A and B are satisfied simultaneously. In addition, if there are descriptions such as "first" and "second" in the embodiments of the invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, "a plurality" means two or more. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those skilled in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the invention.

Claims

1. A composite shaft lining with an outer steel plate for a bedrock frozen vertical shaft, comprising an inner shaft lining and an outer shaft lining, characterized in that, A thin interlayer (1) made of metal plates is provided between the inner shaft wall and the outer shaft wall. At the same time, the metal plates also serve as the formwork for the casting of the outer shaft wall.

2. The outer steel plate composite shaft lining of the bedrock freezing vertical shaft according to claim 1, characterized in that, A plurality of anchor bars (11) are provided on one side of the thin interlayer (1) corresponding to the outer shaft wall.

3. The outer steel plate composite shaft lining of the bedrock freezing vertical shaft according to claim 1 or 2, characterized in that, The outer shaft wall is cast with plain concrete.

4. The outer steel plate composite shaft lining of the bedrock freezing vertical shaft according to claim 1 or 2, characterized in that, The thin interlayer (1) is composed of a plurality of metal cylinders (12) from top to bottom.

5. A downhole assembly device for steel plates, characterized in that, It is used to assemble the thin interlayer (1) composed of a plurality of metal cylinders (12), including inner support components (2) corresponding to each metal cylinder (12). The inner support components (2) include a main rod body (21) and a plurality of inner support plates (22) annularly distributed around the main rod body (21). A telescopic device is provided between the main rod body (21) and the corresponding inner support plate (22) for controlling the corresponding inner support plate (22) to move towards and away from the main rod body (21) to tightly press against the inner wall of the corresponding metal cylinder (12) from the inside of the corresponding metal cylinder (12) and release the tight pressing against the inner wall of the metal cylinder (12). When the upper and lower metal cylinders (12) are butted together, the corresponding two main rod bodies (21) are detachably assembled together.

6. The steel plate downhole assembly device according to claim 5, wherein The telescopic device includes a screw rod (23) fixedly connected to the inner support plate (22) and a screw barrel (24) rotatably provided on the main rod body (21). The screw rod (23) is in spiral fit with the screw barrel (24). The inside of the main rod body (21) is hollow, and one end of the screw barrel (24) extends into the inside of the main rod body (21). A driving component is also provided on the main rod body (21), and the driving component is used to drive each screw barrel (24) to rotate. It also includes a guiding member connected to the main rod body (21) and the inner support plate (22) for preventing the inner support plate (22) from rotating relative to the main rod body (21).

7. The steel plate downhole assembly device according to claim 6, wherein The driving component includes a rotating member and a transmission member. The transmission member includes a first bevel gear (241) provided at the end of the screw barrel (24) and a second bevel gear (281) meshing with each first bevel gear (241) at the same time. The rotating member is used to drive the second bevel gear (281) to rotate, and then each first bevel gear (241) drives the corresponding screw barrel (24) to rotate.

8. The steel plate downhole assembly device according to claim 7, wherein The rotating member is a rotating rod (28) rotatably provided in the main rod body (21). The two ends of the rotating rod (28) respectively extend out of the top and bottom of the main rod body (21) and are detachably connected to the rotating rods (28) on the adjacent main rod bodies (21) and can drive the adjacent rotating rods (28) to rotate. The rotating rod (28) is connected to the second bevel gear (281), and the rotation of the rotating rod (28) can drive the second bevel gear (281) to rotate.

9. The steel plate downhole assembly device according to claim 8, characterized in that, The rotating rod (28) can move up and down in the main rod body (21). The second bevel gear (281) is located above the first bevel gear (241) and is provided on the rotating rod (28) and can move up and down with the rotating rod (28). When hoisting the inner support component (2), the hoisting point is set on the rotating rod (28).

10. The steel plate downhole assembly device according to any one of claims 5 to 9, characterized in that, It further includes a plurality of abutting members (3) provided at the wellhead. The abutting member (3) includes a telescopic unit (31) and an abutting plate (32) provided at the telescopic end of the telescopic unit (31). Each telescopic unit (31) drives the abutting plate (32) to move and abut against the outside of the metal cylinder (12) at the wellhead, cooperates with the inner support assembly (2) to fix the metal cylinder (12) at the wellhead, and positions the metal cylinder (12).

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