Construction method for graded installation of vertical shaft equipment

Abstract

The construction method comprises the steps that before the vertical shaft equipment is installed, original pipelines in a vertical shaft are dismantled, a double-layer hanging scaffold is manufactured, a lifting system is installed on the vertical shaft, and the double-layer hanging scaffold is placed in the vertical shaft and connected with the lifting system; a double-layer hanging scaffold is adopted as a working platform, and shaft components are installed from a well mouth from top to bottom through the double-layer hanging scaffold; after the lowermost layer of shaft component is installed, the double-layer hanging scaffold falls to the shaft bottom and is dismantled; a cage is installed at the bottom of a well, the cage is connected with a lifting system to serve as a pipeline installation operation platform, a drainage pipeline is installed from bottom to top from the bottom of the well through the cage, and finally vertical shaft equipment installation is completed. According to the construction method for installing the vertical shaft equipment for several times, the shaft equipment preparation period can be shortened, the construction cost is reduced, installation construction is easy to organize, workers are easy to operate, the construction efficiency is improved, and the safety risk is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of mine installation engineering construction, and in particular to a construction method for installing shaft equipment in stages. Background Art

[0002] After the return air and drainage shaft of an underground mine is dug and built, it is necessary to install the shaft equipment in the vertical shaft. The main installation contents of the shaft equipment include: installation of steel beams and brackets, installation of ladder rooms, installation of drainage pipes, installation of cable brackets, installation of cables, etc.

[0003] Vertical shaft equipment usually adopts a one-time molding installation method from top to bottom or from bottom to top, such as a quick installation method for ultra-deep vertical shaft equipment with application number 201910936000.5. This method requires the production of multi-layer (≥3 layers) hanging plates, which have complex structures, long processing time and high costs. During installation, the lifting and lowering of the hanging plates are frequent, the construction organization is complicated, and the construction efficiency is reduced. In addition, construction personnel need to perform different operations on the working platforms on each layer of the hanging plate, which poses safety issues for three-dimensional cross-parallel operations. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a construction method for the phased installation of vertical shaft equipment that can shorten the preparation period of shaft equipment, reduce construction costs, make installation and construction easy to organize, and be easy for workers to operate, thereby improving construction efficiency, solving the problem of multi-layer cross-operation in the one-time installation method, and reducing safety risks.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0006] A construction method for installing shaft equipment in stages, comprising the following steps:

[0007] S1. Before installing the equipment in the vertical shaft, remove the original pipelines in the vertical shaft, make a double-layer lifting platform, install the lifting system on the vertical shaft, and place the double-layer lifting platform in the vertical shaft and connect it to the lifting system;

[0008] S2. Use a double-layer hanging platform as the working platform to install the shaft components from top to bottom from the wellhead through the double-layer hanging platform;

[0009] S3. After the installation of the bottom shaft components is completed, the double-layer hanging plate is lowered to the bottom of the well and removed;

[0010] S4. Install a cage at the bottom of the well and connect it to the lifting system to serve as a pipeline installation work platform. Install drainage pipes from the bottom of the well upward through the cage to finally complete the installation of the vertical shaft equipment.

[0011] As a further improvement of the above technical solution:

[0012] The shaft components include cable supports, cables, steel beams and ladders.

[0013] The cable support, cables, steel beams and ladders are installed at one time from top to bottom along with the double-layer hanging platform.

[0014] The cable bracket and cable installation: the cable bracket is transferred to the double-layer hanging tray, the cable is suspended and lowered using a stabilizing vehicle, the cable bracket and the lowered end of the cable are continuously lowered along with the double-layer hanging tray, and the installer fixes the cable bracket on the well wall and lays the cable on the cable bracket;

[0015] The steel beam and ladder are installed as follows: the double-layer hanging platform is lowered layer by layer, the steel beam and ladder are installed layer by layer along with the double-layer hanging platform, and the ladder is fixed on the steel beam.

[0016] The interlayer spacing of the double-layer hanging tray is 2.5 to 4 meters.

[0017] The double-layer hanging platform includes an upper platform body, a lower platform body and multiple columns. Each of the columns is connected between the upper platform body and the lower platform body, and is arranged at intervals around the circumference of the upper platform body and the lower platform body. The top of the column is provided with a lifting ear for connecting to the lifting system.

[0018] A pedestrian ladder is arranged between the upper tray body and the lower tray body.

[0019] The upper disk body and the lower disk body are both provided with fences on their circumferences.

[0020] A plurality of telescopic legs are provided on the circumference of the double-layer hanging platform, and the telescopic legs are used to support the inner wall of the vertical shaft when the double-layer hanging platform is suspended.

[0021] The cage is a three-layer steel cage structure with a layer spacing of 2.5 to 3m.

[0022] Compared with the prior art, the advantages of the present invention are:

[0023] The construction method for the phased installation of shaft equipment of the present invention adopts innovative steps, firstly, the shaft components are installed from top to bottom by using a double-layer hanging plate, and then the drainage pipes are installed from bottom to top by replacing the double-layer hanging plate with a hanging cage, and finally the shaft equipment installation of the shaft is completed. Compared with the existing method of installing shaft components and drainage pipes from bottom to top or from top to bottom by using hanging plates of more than three layers, on the one hand, it avoids making hanging plates of more than three layers, and adopts a double-layer hanging plate with a simple structure and easier processing, which can shorten the shaft equipment preparation period and reduce construction costs; on the other hand, the phased installation method of first installing shaft components from top to bottom and then installing drainage pipes from bottom to top reduces the lifting times of the double-layer hanging plate, and the installation construction is easy to organize and easy for workers to operate, which improves the construction efficiency. In addition, the phased installation can be installed on the same layer, which solves the problem of multi-layer cross-operation in the one-time molding installation method and reduces safety risks. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a flow chart of the construction method for installing shaft equipment in stages according to the present invention.

[0025] Figure 2 It is a schematic diagram of the main structure of a double-layer hanging plate of the construction method for installing shaft equipment in stages according to the present invention.

[0026] Figure 3 It is a schematic diagram of the top view of the double-layer hanging plate of the construction method for installing shaft equipment in stages according to the present invention.

[0027] Figure 4 It is a three-dimensional structural schematic diagram of a double-layer hanging plate of the construction method for installing shaft equipment in stages according to the present invention.

[0028] Figure 5 It is a structural schematic diagram of a hoist cage of a construction method for installing shaft equipment in stages according to the present invention.

[0029] The symbols in the figure represent:

[0030] 1. Vertical shaft; 2. Double-layer lifting platform; 21. Upper platform; 22. Upper platform; 23. Column; 24. Lifting lug; 25. Pedestrian ladder; 26. Fence; 3. Cage; 4. Lifting system. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0032] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "assemble", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] Figures 1 to 5 An embodiment of the construction method for installing shaft equipment in stages according to the present invention is shown. The construction method for installing shaft equipment in stages according to this embodiment includes the following steps:

[0036] S1. Before the equipment is installed in the vertical shaft 1, the original pipelines in the vertical shaft 1 are removed, and a double-layer hanging plate 2 is made and a lifting system 4 is installed on the vertical shaft 1. The double-layer hanging plate 2 is placed in the vertical shaft 1 and connected to the lifting system 4.

[0037] S2, using a double-layer hanging plate 2 as a working platform, and installing the wellbore components from top to bottom from the wellhead through the double-layer hanging plate 2;

[0038] S3. After the installation of the bottommost shaft components is completed, the double-layer hanging plate 2 is dropped to the bottom of the well and removed;

[0039] S4. Install the cage 3 at the bottom of the well and connect the cage 3 to the lifting system 4 to serve as a pipeline installation work platform. Install the drainage pipeline from the bottom to the top through the cage 3, and finally complete the equipment installation of the vertical shaft 1.

[0040] This construction method for the phased installation of shaft equipment adopts innovative steps. First, the shaft components are installed from top to bottom through the double-layer hanging plate 2, and then the drainage pipes are installed from bottom to top by replacing the double-layer hanging plate 2 with the hanging cage 3, and finally the installation of the shaft equipment 1 is completed. Compared with the existing method of installing shaft components and drainage pipes from bottom to top or from top to bottom through hanging plates of more than three layers, on the one hand, it avoids making hanging plates of more than three layers, and adopts a double-layer hanging plate 2 with a simple structure and easier processing, which can shorten the shaft equipment preparation period and reduce construction costs; on the other hand, the phased installation method of first installing shaft components from top to bottom and then installing drainage pipes from bottom to top reduces the number of lifting and lowering of the double-layer hanging plate 2, makes the installation and construction easy to organize, and is easy for workers to operate, which improves construction efficiency. In addition, phased installation can be carried out on the same layer, which solves the problem of multi-layer cross-operation in the one-time molding installation method and reduces safety risks.

[0041] Furthermore, in this embodiment, the shaft components include cable supports, cables, steel beams and ladders.

[0042] Furthermore, in this embodiment, the cable bracket, cable, steel beam and ladder are installed from top to bottom at one time along with the double-layer hanging plate 2. All shaft components are made of fixed-size materials, and fastener-type installation materials are used between cables and ladders. Except for the pipeline welding connection, which requires hot work, the rest of the installation is a routine operation, and the overall installation process is simple and efficient.

[0043] Furthermore, in this embodiment,

[0044] Cable support and cable installation: The cable support is transferred to the double-layer hanging tray 2, and the cable is suspended and lowered using a stabilizing vehicle. The cable support and the lowered end of the cable are continuously lowered along with the double-layer hanging tray 2. The installer fixes the cable support on the well wall and lays the cable on the cable support;

[0045] Installation of steel beams and ladders: The double-layer hanging platform 2 descends layer by layer, and the steel beams and ladders are installed layer by layer along with the double-layer hanging platform 2. The ladder is fixed on the steel beam to complete the installation of the ladder room.

[0046] Specifically, the installation process of the ladder room is as follows: put the double-layer hanging plate 2 in place → drill the anchor hole → install the anchor → install the ladder beam bracket and calibrate → install the ladder beam → install the ladder beam → install the ladder platform → install the ladder → install the fence. After the construction of one layer of ladder room is completed, the double-layer hanging plate 2 is lowered and stabilized, and then the next layer of ladder room is constructed. The lowering depth of the double-layer hanging plate 2 in each cycle is based on the designed layer spacing. In this way, from top to bottom, the installation of the ladder room and steel beams in the entire shaft is completed at one time.

[0047] Furthermore, in this embodiment, the interlayer distance between the double-layer hanging plates 2 is 2.5 to 4 m.

[0048] Furthermore, in the present embodiment, the double-layer hanging plate 2 comprises an upper plate body 21, a lower plate body 22 and a plurality of columns 23, each column 23 is connected between the upper plate body 21 and the lower plate body 22, and is arranged at intervals around the circumference of the upper plate body 21 and the lower plate body 22, and the top of the column 23 is provided with a lifting lug 24 for connecting with the lifting system 4. The lifting system 4 is connected with the lifting lug 24 at the top of each column 23 to lift the double-layer hanging plate 2. Preferably, an opening is provided on the upper plate body 21 for the installation personnel to go up and down the pedestrian ladder 25, and the opening can be covered with a cover plate, which is opened when the installation personnel go up and down.

[0049] Furthermore, in this embodiment, a pedestrian ladder 25 is provided between the upper tray 21 and the lower tray 22 .

[0050] Furthermore, in this embodiment, fences 26 are provided around the upper disk body 21 and the lower disk body 22 .

[0051] Furthermore, in this embodiment, a plurality of telescopic legs (not shown in the drawings) are provided on the circumference of the double-layer hanging plate 2, and the telescopic legs are used to hold the inner wall of the shaft 1 when the double-layer hanging plate 2 is suspended. When the double-layer hanging plate 2 is suspended, the telescopic legs on the circumference of the double-layer hanging plate 2 are held tightly against the inner wall of the shaft 1 to improve the overall stability. Preferably, a plurality of telescopic legs are provided on the circumference of both the upper plate body 21 and the lower plate body 22.

[0052] Furthermore, in this embodiment, the cage 3 is a three-layer steel cage structure with a layer spacing of 2.5 to 3 meters. Each platform of the cage 3 is densely paved with patterned steel plates, and a pedestrian ladder is provided between the layers.

[0053] Cage 3 was installed and put into use after passing the trial run acceptance.

[0054] Furthermore, the installers stand on the cage 3 operating platform and the installed ladder platform to fix and weld the drainage pipes from the bottom of the well upwards; at this time, only the drainage pipe installation work is carried out, which can avoid the cross-operation safety risks caused by the one-time installation method.

[0055] Furthermore, the drainage pipe installation process: the drainage pipe is slowly lowered by a lifting winch. The length of each lowering of the drainage pipe should be determined according to the position of the ladder room and the allowable lifting height of the derrick. When appropriate, 2 to 3 pipes can be pre-connected at the wellhead, and then hoisted to the working surface. The installers stand on the ladder room platform and the cage 3 platform to receive and carry out pipe butt welding, and at the same time fix the drainage pipe on the pipe bearing beam.

[0056] Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Any technician familiar with the art can make many possible changes and modifications to the technical solution of the present invention by using the technical content disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A construction method for installing shaft equipment in stages, characterized in that: The steps include: S1. Before the equipment is installed in the vertical shaft (1), the original pipelines in the vertical shaft (1) are removed, and a double-layer hanging plate (2) is made and a lifting system (4) is installed on the vertical shaft (1). The double-layer hanging plate (2) is placed in the vertical shaft (1) and connected to the lifting system (4); S2, using a double-layer hanging plate (2) as a working platform, and installing the wellbore components from top to bottom from the wellhead through the double-layer hanging plate (2); S3. After the installation of the bottommost shaft components is completed, the double-layer hanging plate (2) is lowered to the bottom of the shaft and removed; S4. Install a hoist cage (3) at the bottom of the well and connect the hoist cage (3) to the lifting system (4) to serve as a pipeline installation work platform. Install drainage pipes from the bottom of the well upward through the hoist cage (3), and finally complete the equipment installation of the vertical shaft (1).

2. The construction method for installing shaft equipment in stages according to claim 1 is characterized in that: The shaft components include cable supports, cables, steel beams and ladders.

3. The construction method for installing shaft equipment in stages according to claim 2 is characterized in that: The cable support, cables, steel beams and ladders are installed at one time from top to bottom along with the double-layer hanging plate (2).

4. The construction method for installing shaft equipment in stages according to claim 3 is characterized in that: The cable support and cable installation: the cable support is transferred to the double-layer hanging tray (2), the cable is suspended and lowered using a stabilizing vehicle, the cable support and the lowered end of the cable are continuously lowered along with the double-layer hanging tray (2), and the installation personnel fix the cable support on the well wall and lay the cable on the cable support; The steel beam and the ladder are installed as follows: the double-layer hanging plate (2) is lowered layer by layer, and the steel beam and the ladder are installed layer by layer along with the double-layer hanging plate (2), and the ladder is fixed on the steel beam.

5. The construction method for installing shaft equipment in stages according to any one of claims 1 to 4, characterized in that: The interlayer distance between the double-layer hanging trays (2) is 2.5 to 4 m.

6. The construction method for installing shaft equipment in stages according to claim 5 is characterized in that: The double-layer hanging plate (2) comprises an upper plate body (21), a lower plate body (22) and a plurality of columns (23), each of the columns (23) being connected between the upper plate body (21) and the lower plate body (22) and being arranged at intervals around the circumference of the upper plate body (21) and the lower plate body (22), and the top of the column (23) is provided with a lifting ear (24) for connecting to a lifting system (4).

7. The construction method for installing shaft equipment in stages according to claim 6 is characterized in that: A pedestrian ladder (25) is provided between the upper tray (21) and the lower tray (22).

8. The construction method for installing shaft equipment in stages according to claim 6 is characterized in that: The upper disk body (21) and the lower disk body (22) are both provided with fences (26) on their circumferences.

9. The construction method for installing shaft equipment in stages according to any one of claims 1 to 4, characterized in that: A plurality of telescopic legs are provided on the circumference of the double-layered hanging plate (2), and the telescopic legs are used to support the inner wall of the vertical shaft (1) when the double-layered hanging plate (2) is suspended.

10. The construction method for installing shaft equipment in stages according to any one of claims 1 to 4, characterized in that: The cage (3) is a three-layer steel cage structure with a layer spacing of 2.5 to 3 m.

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