Standard ring pipe piece for sunken vertical shaft

Abstract

The utility model relates to a standard ring duct piece for a sunken vertical shaft. The standard ring duct piece mainly comprises a duct piece, a shear pin, a U-shaped stud component and a double-end stud, the pipe pieces are of a trapezoid-like structure, a complete annular structure is formed in a staggered joint splicing mode, the overall stability is improved, and construction site management is simplified. According to the utility model, the hoisting reliability and safety are enhanced by optimizing the design of the hoisting pin holes, and meanwhile, the sealing performance and the impermeability are improved by the sealing components arranged on the inner side and the outer side of the duct piece. The built-in steel plate structure facilitates installation of subsequent facilities, and the duct pieces do not need to be damaged. The stability and the shear resistance are further enhanced through the shear-resistant taper pins and the optimized connecting mode. By means of the innovative design, construction efficiency is improved, engineering safety is guaranteed, and technical progress and remarkable effects are shown.

Description

Technical Field

[0001] The utility model relates to the field of vertical shaft drilling construction, in particular to a standard ring segment for a sunken vertical shaft. Background Technique

[0002] In vertical shaft construction, the use of mechanical equipment for excavation and segment support has become a common construction method. With the progress of technology, the traditional construction method has gradually evolved into a way of sinking support by gradually assembling precast segments. This method requires the ability to achieve synchronous support for the excavated vertical shaft to ensure the stability of the shaft wall during the shaft excavation process. However, there are still many problems in the current precast segment technology.

[0003] First of all, each ring of the existing precast segments requires a combination of multiple types of segments, which not only increases the manufacturing difficulty of the segments but also makes standardization difficult. At the same time, the excessive types of segments lead to complex construction site management, occupy a large amount of space, and are not conducive to the smooth progress of the project. In addition, when assembling the segments, it is necessary to accurately confirm each segment, which undoubtedly increases the workload and difficulty of the construction personnel.

[0004] In terms of segment connection, at present, it mainly relies on bolts for connection, but this method makes the lateral shear resistance of the assembled segments relatively weak. Moreover, the existing sealing technology also has deficiencies, such as weak sealing ability and easy water leakage in a high water pressure environment. Especially at the corners of the segments, the sealing segments often lead to water leakage.

[0005] In addition, the inside of the current segments is all concrete structure, lacking connection devices with subsequent facilities. After the shaft construction is completed, when installing supporting facilities, it is often necessary to damage the segment structure, such as roughening or drilling holes, which undoubtedly reduces the overall performance of the segments.

[0006] In terms of hoisting, due to the large weight of a single segment, at present, it mainly uses studs, nuts and lifting tools for connection for hoisting. However, this connection method has safety hazards such as unreliable hoisting and easy falling of the segments. At the same time, in order to ensure the reliability of hoisting, the studs and the segments need to be tightened very tightly, which results in difficult installation and disassembly and low efficiency.

[0007] Therefore, in view of the problems and deficiencies in the existing technology, how to design a standard ring segment for a sunken vertical shaft through reasonable structural design to effectively improve the construction efficiency and ensure the project safety is an urgent problem to be solved by those skilled in the art at present. Content of the Utility Model

[0008] The purpose of the utility model is to provide a standard ring segment for a sunken vertical shaft in view of the problems in the background technique.

[0009] To achieve the above object, the technical solution of the utility model is to design a standard ring segment for a sunken vertical shaft, which is composed of segments, shear pins, U-shaped stud assemblies and double-headed studs. The segment has a "quasi-trapezoidal" structure. Each standard ring segment is formed by alternately arranging and connecting an even number of the segments in a forward and reverse manner. The segments are connected by 2 of the U-shaped stud assemblies on the left and right, and the segments are positioned by the shear pins and connected by the double-headed studs up and down.

[0010] Further, stud mounting holes and pin holes are uniformly arranged on the upper and lower parts of the segment. The shear pins are arranged in the pin holes, and the double-headed studs are arranged in the stud mounting holes. The stud mounting holes and the pin holes are arranged in an intersecting manner to ensure that when the segments are assembled with staggered joints, the stud mounting holes and the pin holes can be completely aligned.

[0011] Preferably, 2 pin holes are provided on each of the upper and lower parts of the segment.

[0012] Further, U-shaped stud mounting holes are provided at 2 upper and lower positions in the middle of the side part of the segment, and nut mounting counterbores are provided on the outer side of the segment corresponding to the U-shaped stud mounting holes.

[0013] Further, 2 lifting pin holes are provided on the outer side of the outer circle of the segment, and steel sleeves are arranged inside the lifting pin holes.

[0014] Further, 3 steel plates are provided on the inner side of the inner circle of the segment, and the steel plates are welded to the steel bars on the inner side of the segment. When the construction of the shaft is completed and auxiliary facilities are installed in the shaft, the steel plates on the segment can meet the welding connection between the auxiliary facilities and the segment to ensure the reliability of the installation of the auxiliary facilities.

[0015] Further, sealing grooves are provided on both sides of the upper part and the side part of the segment. The sealing grooves form a complete circle on the segment. A sealing assembly is arranged inside the sealing grooves. The sealing assembly protrudes a certain distance from the plane of the segment and a certain amount of compaction allowance is reserved. When a group of the segments are butted, relying on the self-weight of the segments, the protrusions of the sealing assembly can be completely flattened to ensure a certain pre-tension and improve the sealing reliability.

[0016] Preferably, the segment is made of reinforced concrete structure.

[0017] Further, the sealing assembly is an integral strip structure of composite material without joints at the corners, and has good sealing performance.

[0018] Preferably, the sealing assembly is provided with rings on the inner and outer sides of the segment.

[0019] Furthermore, the shear pin has a completely symmetrical double-headed conical structure, with a cylindrical surface in the middle, a rounded corner at the top, and a conical surface for transition therebetween, which is conducive to positioning and installation. When installing, there is no need to distinguish the direction, and the installation is more concise and convenient.

[0020] Furthermore, the U-shaped stud assembly includes a U-shaped stud and a nut. When the U-shaped stud assembly connects the segment, the nut is flat-pressed on the nut installation counterbore to ensure the reliability of the bolt connection.

[0021] Furthermore, a threaded sleeve is provided at the bottom of the stud installation holes above and below the segment. After the double-headed stud is screwed in, the upper part of the double-headed stud does not interfere with the threaded sleeve in the upper segment. When the screwing depth of the double-headed stud is insufficient, the threaded sleeve interferes with the double-headed stud, resulting in the segment not being able to be lowered completely to the bottom. The installation reliability of the double-headed stud is ensured by the length relationship among the installation position of the threaded sleeve, the hole depth, and the double-headed stud.

[0022] The utility model solves many problems of traditional precast segments in shaft construction by proposing a technical solution of using multiple standard segments to form a complete ring segment. First, the standardized segment with a "quasi-trapezoidal" structure and the staggered joint assembly method not only improves the stability of the overall structure but also reduces the manufacturing difficulty and improves product standardization. Second, through a single segment type, the discrimination difficulty of construction workers is reduced, thereby improving the installation efficiency and simplifying the construction site management. Third, the lifting pin holes enhance the reliability and safety of lifting, and at the same time optimize the lifting process. Fourth, the sealing components provided on the inner and outer sides of the segment and the jointless corner design significantly improve the sealing and anti-seepage performance of the segment, especially suitable for high-water-pressure environments. The built-in steel plate structure makes the installation of subsequent facilities more convenient without damaging the segment itself. At the same time, the shear conical pins and the optimized connection method further enhance the stability and shear resistance of the segment. In summary, the integrated application of these technical points not only greatly improves the construction efficiency but also ensures the safety of the project, demonstrating substantial technical progress and remarkable technical effects. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model, and those skilled in the art can obtain other drawings without creative efforts based on these drawings.

[0024] Figure 1 It is a schematic diagram of the overall structure of the present utility model.

[0025] Figure 2This is a schematic diagram of the inner side of the segment of the present utility model.

[0026] Figure 3 This is a schematic diagram of the outer side of the segment of the present utility model.

[0027] Figure 4 This is a schematic diagram of the shear pin of the present utility model.

[0028] Figure 5 This is a schematic diagram of the U-shaped stud assembly of the present utility model.

[0029] Figure 6 This is a schematic diagram of the threaded sleeve of the present utility model.

[0030] Wherein, 1 - segment, 11 - stud mounting hole, 12 - pin hole, 13 - U-shaped stud mounting hole, 14 - nut mounting counterbore, 15 - lifting pin hole, 16 - steel sleeve, 17 - steel plate, 18 - sealing groove, 19 - sealing assembly, 2 - shear pin, 21 - cylindrical surface, 22 - conical surface, 23 - fillet, 3 - U-shaped stud assembly, 31 - U-shaped stud, 32 - nut, 4 - double-headed stud, 41 - threaded sleeve. Detailed implementation manners

[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without making creative efforts belong to the scope of protection of the present utility model. In addition, it should be understood that the specific implementation manners described herein are only used to illustrate and explain the present utility model, and are not used to limit the present utility model. In the present utility model, unless otherwise stated, the orientation terms such as "upper" and "lower" generally refer to the upper and lower in the actual use or working state of the device, specifically the drawing direction in the accompanying drawings; and "inner" and "outer" refer to the outline of the device. Embodiment

[0032] As Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 and Figure 6 shown, a standard ring segment for a sinking vertical shaft includes a segment 1, a shear pin 2, a U-shaped stud assembly 3 and a double-headed stud 4.

[0033] In terms of the main structure, the segment 1 is designed with a "quasi-trapezoidal" structure. This shape facilitates the tight assembly of multiple segments 1 to form a complete ring structure. They are connected in an alternating arrangement of direct installation and inverted installation to ensure the stability of the overall structure. The stud mounting holes 11 are evenly arranged on the upper and lower parts of the segment 1 for installing double-headed studs 4 to achieve the longitudinal connection between segments 1. The pin holes 12 are also evenly distributed on the upper and lower parts of the segment for inserting shear pins 2 to enhance the lateral stability of the segment 1.

[0034] In terms of the connection and positioning components, the U-shaped stud assembly 3 includes a U-shaped stud 31 and a nut 32. This assembly is flat-pressed on the nut mounting counterbore 14 by the nut 32 to ensure the reliability of the bolt connection and achieve the tight connection between segments 1. The shear pin 2 is designed as a completely symmetrical double-headed conical structure with a cylindrical surface 21 in the middle and a rounded corner 23 at the top, which is beneficial for positioning and installation. It improves the shear resistance between segments 1 and enhances the stability of the overall structure. The threaded sleeve 41 is installed at the bottom of the stud mounting hole 11 and used in conjunction with the double-headed stud 4 to ensure the installation reliability of the double-headed stud 4 and prevent the stud from being screwed in too deep, resulting in the segment 1 not being able to be lowered completely to the bottom.

[0035] In terms of the hoisting and load-bearing structure, the hoisting pin hole 15 is located on the outer ring side of the segment 1 and is equipped with a steel sleeve 16 to enhance the reliability and safety of hoisting. The steel plate 17 is placed inside the inner ring side of the segment 1 and is welded to the steel bars on the inner side of the segment 1 to facilitate the installation of subsequent facilities and increase the load-bearing capacity of the segment 1.

[0036] In terms of the sealing and waterproof structure, the sealing groove 18 is set on both the upper and side parts of the segment 1 to form a complete circle. This design ensures the sealing performance when the segments 1 are butted. The sealing component 19 adopts an integral strip structure of composite materials without joints at the corners, improving the sealing performance, especially suitable for high water pressure environments. This component protrudes a certain distance from the plane of the segment 1 and reserves a certain amount of compaction to ensure the tightness when the segments are butted.

[0037] Specific construction method:

[0038] First, according to the engineering requirements and geological conditions, select standard segments for the sunk vertical shaft with appropriate specifications and quantities. Check whether the segment 1 is intact, especially key parts such as the hoisting pin hole 15 and the stud mounting hole 11.

[0039] Use the hoisting equipment to lift the segment through the hoisting pin hole 15 on the segment 1 and slowly lower it to the vertical shaft position. During the lowering process, ensure that the segment is aligned with the already installed segment or the shaft wall for subsequent connection operations.

[0040] For lateral connection, the adjacent two segments 1 are tightly connected together by using the U-shaped stud assembly 31. Ensure that the nuts are tightened to guarantee the stability between the segments. For longitudinal connection, the upper and lower segments 1 are connected by the double-end studs 4 and the threaded sleeves 41. Pay attention to the screwing depth of the studs to ensure that it will not interfere with the installation of the previous ring of segments 1. Shear pins 2 are inserted into the pin holes 12 of the segments 1 to enhance the lateral stability and shear resistance of the segments 1.

[0041] The sealing assembly 19 is installed in the sealing assembly installation groove 18 of the segment 1 to ensure good sealing at the joints between the segments 1. After the installation is completed, check the joints and conduct necessary waterproof tests to ensure the sealing performance of the segments.

[0042] Finally, by using the steel plates 17 on the inner ring side of the segment 1, subsequent facilities such as drainage pipes and cable brackets are welded to the segment to meet the usage requirements.

[0043] The above has introduced in detail a standard ring segment for a sunken vertical shaft provided by the present utility model. Specific examples are used herein to elaborate on the principles and implementation manners of the present invention. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present invention, several improvements and modifications can still be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. A standard annular segment for a sunken vertical shaft, comprising a segment (1), a shear pin (2), a U-shaped stud assembly (3) and a stud (4), characterized in that: The pipe segment (1) has a "quasi-trapezoidal" structure. Each standard ring pipe segment is composed of an even number of pipe segments (1) which are alternately arranged and connected in a normal and inverted manner. The left and right pipe segments (1) are connected by two U-shaped stud assemblies (3). The upper and lower pipe segments (1) are positioned by the shear pins (2) and connected by the stud studs (4).

2. A standard annular segment for a sunken vertical shaft according to claim 1, characterized in that: The pipe segment (1) is evenly provided with stud mounting holes (11) at the top and bottom, and two pin holes (12) are respectively provided at the top and bottom of the pipe segment (1). The shear pin (2) is arranged in the pin hole (12), and the stud (4) is arranged in the stud mounting hole (11). The stud mounting hole (11) and the pin hole (12) are arranged to intersect each other. U-shaped stud mounting holes (13) are provided at two locations at the top and bottom of the middle of the side of the pipe segment (1), and nut mounting countersunk holes (14) are provided on the outer side of the pipe segment corresponding to the U-shaped stud mounting holes (13).

3. A standard annular segment for a sunken vertical shaft according to claim 2, characterized in that: Two hanging pin holes (15) are arranged on the outer ring side of the pipe segment (1), and steel sleeves (16) are arranged inside the hanging pin holes (15). Three steel plates (17) are arranged on the inner ring side of the pipe segment (1), and the steel plates (17) are welded to the steel bars on the inner side of the pipe segment (1).

4. A standard annular segment for a sunken vertical shaft according to claim 2, characterized in that: The upper part and both sides of the tube segment (1) are provided with sealing grooves (18), the sealing grooves (18) forming a complete circle on the tube segment (1), and the sealing components (19) are provided inside the sealing grooves (18), the sealing components (19) protrude from the tube segment (1).

5. A standard annular segment for a sunken vertical shaft according to claim 4, characterized in that: The sealing component (19) is an integral strip structure of a composite material and has no joints at the corners.

6. A standard annular segment for a sunken vertical shaft according to claim 5, characterized in that: The sealing assembly (19) is provided with two circles inside and outside the tube segment (1).

7. A standard annular segment for a sunken vertical shaft according to claim 6, characterized in that: The shear pin (2) is a completely symmetrical double-headed conical structure, with a cylindrical surface (21) in the middle and a rounded corner (23) at the top, with a conical surface (22) in between.

8. A standard annular segment for a sunken vertical shaft according to claim 7, characterized in that: The U-shaped stud assembly (3) comprises a U-shaped stud (31) and a nut (32); when the U-shaped stud assembly (3) is connected to the pipe segment (1), the nut (32) is pressed flat on the nut mounting countersunk hole (14).

9. A standard annular segment for a sunken vertical shaft according to claim 8, characterized in that: The bottoms of the stud mounting holes (11) on the upper and lower segments (1) are provided with threaded sleeves (41), and after the studs (4) are screwed in, the upper parts of the studs (4) do not interfere with the threaded sleeves (41) in the upper segment (1).

10. A standard annular segment for a sunken vertical shaft according to any one of claims 1 to 9, characterized in that: The pipe segment (1) is a reinforced concrete structure.

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