An overall hoisting operation platform for a shaft in an ultra-deep shaft and its construction method

Abstract

The present invention discloses an integral hoisting operation platform for a shaft in a super-deep shaft. The operation platform includes embedded screws, wall-attached members, outer operation frame bases, outer operation frames and inner operation frames. The construction method is as follows: First, construct the bottom shaft by traditional construction techniques and embed the embedded screws in the shaft wall; sequentially install the wall-attached members, outer operation frame bases, outer operation frames and inner operation frames; personnel complete the construction of the upper shaft on the operation platform, and embed the embedded screws in the shaft wall during shaft construction; after form removal, install the wall-attached members of this layer, and use a hoisting device to lift the outer operation frame base and the outer operation frame as a whole upward and place them on the foldable steel plates of the wall-attached members, lift the inner operation frame upward, and place the base on the foldable steel plates of the inner wall-attached members; and so on, layer by layer from bottom to top to complete the construction of the shaft. The structure of the present invention is simple, safe and reliable, can be reused, is easy to operate, has high construction efficiency, and can effectively save the construction period and cost.

Description

Technical Field

[0001] The present invention relates to the technical field of shaft construction, and specifically to an integral lifting operation platform for a shaft in an ultra-deep vertical shaft, its construction method, and construction method. Background Art

[0002] In traditional shaft construction, most often a fastener-type steel pipe scaffold is erected from the bottom to the top. Due to the large amount of occupation of scaffold steel pipes and pipe clamps, the rental cost is relatively high. Moreover, the installation and disassembly speed of the scaffold body is relatively slow, affecting the shaft construction efficiency. And during the erection process of the scaffold body, situations such as insecure erection and inadequate safety protection measures often occur, which are major hazards in construction.

[0003] If hydraulic climbing formwork construction is used for the shaft, it has the disadvantages of complex equipment, cumbersome processes, and relatively large equipment costs. Moreover, the shaft requires double-sided formwork support inside and outside. The internal space is limited and not suitable for climbing formwork construction. For the inner side of the shaft, only a floor-standing operation frame can be erected or a lifting operation platform can be used. Different platform forms are used on the inner and outer sides, increasing the complexity and operation difficulty of the plan. Therefore, there is an urgent need for a shaft construction operation platform and construction method that can be efficient, simple, and safe. Summary of the Invention

[0004] In order to overcome the technical defects such as complex equipment, cumbersome processes, and relatively large equipment costs existing in the traditional shaft construction method in the prior art, the present invention provides an integral lifting operation platform for a shaft in an ultra-deep vertical shaft and its construction method, solving the above technical problems.

[0005] The present invention achieves the above object through the following technical solutions. An integral lifting operation platform for a shaft in an ultra-deep vertical shaft includes embedded screw rods, wall-attached members, outer operation frame bases, outer operation frames, and inner operation frames. The embedded screw rods are embedded in the shaft wall of the shaft. The wall-attached members are installed on the outer wall of the shaft through the embedded screw rods. The outer operation frame bases are fixedly installed on the wall-attached members. The outer operation frames are fixedly connected to the outer operation frame bases and are arranged around the outside of the shaft. The inner operation frames are placed inside the shaft.

[0006] The embedded screw rod includes a water stop sheet, an intermediate screw rod, a connecting sleeve, a tapered rubber pad, an end screw rod, a nut gasket, and a nut. The water stop sheet is welded at the middle position between two intermediate screw rods. External threads are provided at both ends of the intermediate screw rod. A connecting sleeve is welded to one end of the end screw rod. A tapered rubber pad is installed at the middle position between the two. External threads are provided at the other end and are equipped with a nut gasket and a nut. Internal threads are provided at the other end of the connecting sleeve, and the thread specifications are adapted to the external threads of the intermediate screw rod. Before embedding, the intermediate screw rod with the water stop sheet is connected to the end screw rod through the connecting sleeve. After installation, the tail distance between the two tapered rubber pads is the same as the shaft wall thickness.

[0007] The wall-attached member includes a wall-attached member outer frame, a foldable steel plate and a pressing plate. The wall-attached member outer frame is welded by steel plates. There are two round holes with the same diameter corresponding to the positions of the embedded screw rods on the steel plate on the side close to the shaft. Shaft holes matching the foldable steel plate are opened on the steel plates on both sides. The foldable steel plate is hinged at the shaft holes on both sides of the wall-attached member outer frame. The pressing plate is arranged on the bottom plate of the wall-attached member outer frame. When the outer operation frame is lifted upward, the foldable steel plate is pushed upward by the base of the outer operation frame and folds upward. When not under thrust, it relies on gravity to reset and fits horizontally on the pressing plate.

[0008] The bases of the outer operation frames are arranged around the shaft. The frame body includes lower horizontal steel sections, vertical steel sections, diagonal bracket steel sections and upper horizontal steel sections. The lower horizontal steel sections and the upper horizontal steel sections are located on the foldable steel plates of the wall-attached members. One end of the diagonal bracket steel section is connected to the vertical steel section, and the other end is connected to the upper horizontal steel section to form a diagonal bracing structure. Steel plates are laid on the top platforms of the upper horizontal steel sections, and outer operation frame positioning steel plates and lifting lugs are installed. The lifting lugs are connected to the top lifting beam through lifting tools. Positioning pulleys are installed at the contact positions between the inner sides of the vertical steel sections and the outer wall of the shaft.

[0009] The outer operation frame is stacked vertically by a plurality of single-layer outer operation frames arranged around the shaft. The inner side is 300 mm away from the outer edge of the shaft. The bottom of the outer contour is closely attached to the outer operation frame positioning steel plate. The sides of the outer operation frame are sealed with wire meshes. Ladders are installed on both sides. A flat opening door is installed on the first layer. Outer operation frame assembly docking joints are arranged at the four corners of the outer operation frame to realize the splicing connection between adjacent layers. Bolts are used for fixing between each layer.

[0010] The inner operation frame is a frame structure welded by the bottom platform of the inner operation frame and vertical rods distributed around. It is located on the foldable steel plates of the wall-attached members. Retractable inner operation frame positioning pulleys are installed on the vertical rods of the inner operation frame and are folded outward to press tightly against the side wall before the inner operation frame body is lifted. Lifting points are arranged at the top of the inner operation frame, and a ladder is arranged on one side.

[0011] For the above-mentioned integral lifting operation platform for the shaft in the ultra-deep shaft, the arrangement spacing of the embedded screw rods in the vertical direction is the same as the single-layer construction height of the shaft, and they are horizontally arranged at the central position around the shaft, and the distance from the top surface of the current layer of the shaft is 500 mm.

[0012] For the above-mentioned integral lifting operation platform for the shaft in the ultra-deep shaft, the height of the single-layer outer operation frame is 1.8 m - 2.0 m, and the total height of the outer operation frame is more than 1.2 m higher than the single-layer construction height.

[0013] The above-mentioned integral hoisting operation platform for the shaft in ultra-deep shaft. The outer dimension of the inner operation frame is adapted to the wall-attached members on the inner side of the shaft, and the overlapping length with the foldable steel plate is not less than 100 mm. The single-layer height of the inner operation frame is 1.8 m - 2.0 m, and the number of layers of the frame can be determined according to the single-layer construction height of the shaft. The total height of the frame is greater than the single-layer construction height by 1.2 m.

[0014] When the integral hoisting operation platform for the shaft of the present invention is under construction, the construction of the shaft is mainly completed through the following steps:

[0015] S1: Construct the bottom shaft according to the traditional construction process, and embed embedded screw rods in the middle of the side walls around the bottom shaft at a position 500 mm below the top surface of the bottom shaft wall.

[0016] S2: Install the wall-attached members, the outer operation frame base, the outer operation frame and the inner operation frame in sequence.

[0017] S3: Workers carry out steel bar binding, formwork installation and concrete pouring on the operation platform, and construct all the shafts above the bottom shaft. When constructing all the shafts above the bottom shaft, accurately embed embedded screw rods at the corresponding positions on the shaft wall.

[0018] S4: After the formwork of the upper shaft is removed, place each component firmly inside the outer operation frame and the inner operation frame, install the wall-attached members of this layer, and carry out concrete curing.

[0019] S5: After the concrete strength reaches the requirement, use a hoisting device to tow the steel wire rope to lift the hoisting spreader, lift the outer operation frame base, the outer operation frame and the removed formwork materials as a whole to a position 300 mm above the wall-attached members, and then lower the outer operation frame so that it is placed on the foldable steel plate of the wall-attached members on the outer side of the shaft.

[0020] S6: Turn out the inner operation frame positioning pulleys at the four vertical poles of the inner operation frame and press them tightly against the side wall, use a hoisting device to lift the inner operation frame upward, fix it on the foldable steel plate of the wall-attached members on the inner side of the shaft, and then retract the inner operation frame positioning pulleys.

[0021] S7: Repeat steps S3 to S6 to complete the construction of the shaft layer by layer from bottom to top.

[0022] S8: Use a hoisting device to lift out the outer operation frame and the inner operation frame. While dealing with the tension bolt holes on the shaft for formwork reinforcement, remove the wall-attached members, take out the conical rubber pads, remove the connecting sleeves and end screw rods, and seal the holes with slightly expanded cement mortar to complete the entire construction process of the shaft.

[0023] Generally speaking, compared with the prior art, the above technical solution conceived by the present invention can achieve the following beneficial effects: The overall lifting operation platform for the shaft in the ultra-deep shaft of the present invention has a simple structure, is safe and reliable, and can be reused. When using the overall lifting operation platform described in the present invention during specific construction, the operation is simple, the construction efficiency is high, and the construction period and cost can be effectively saved. Description of the Drawings

[0024] The following further details the specific implementation manners of the present invention with reference to the drawings, where:

[0025] Figure 1 is the overall structural schematic diagram of an overall lifting operation platform for a shaft in an ultra-deep shaft of the present invention;

[0026] Figure 2 is the cross-sectional view of an overall lifting operation platform for a shaft in an ultra-deep shaft of the present invention;

[0027] Figure 3 is the split structural schematic diagram of the embedded screw described in the present invention;

[0028] Figure 4 is the structural schematic diagram of the wall-attached member described in the present invention;

[0029] Figure 5 is the connection relationship schematic diagram of the embedded screw and the wall-attached member described in the present invention;

[0030] Figure 6 is the structural schematic diagram of the base of the outer operation frame described in the present invention;

[0031] Figure 7 is the structural schematic diagram of the outer operation frame described in the present invention;

[0032] Figure 8 is the structural schematic diagram of the inner operation frame described in the present invention;

[0033] In the figures: 1 - shaft, 2 - embedded screw, 3 - wall-attached member, 4 - base of the outer operation frame, 5 - outer operation frame, 6 - inner operation frame, 7 - hoisting beam, 21 - water stop plate, 22 - intermediate screw, 23 - connecting sleeve, 24 - conical rubber pad, 25 - end screw, 26 - nut gasket, 27 - nut, 31 - outer frame of the wall-attached member, 32 - foldable steel plate, 311 - round hole, 33 - pressing plate, 41 - lower horizontal section steel, 42 - positioning pulley, 43 - vertical section steel, 44 - inclined corbel section steel, 45 - hoisting ear, 46 - positioning steel plate of the outer operation frame, 47 - upper horizontal section steel, 51 - single-layer outer operation frame, 511 - ladder, 512 - flat door, 513 - docking joint for assembling the outer operation frame, 61 - bottom platform of the inner operation frame, 62 - positioning pulley of the inner operation frame, 63 - ladder, 64 - hoisting point. Specific Embodiments

[0034] As Figure 1 and Figure 2 shown, it is a schematic diagram of the overall structure and a sectional view of an overall lifting operation platform for a shaft in a super-deep shaft, including embedded screws 2, wall-attached members 3, outer operation frame bases 4, outer operation frames 5, and inner operation frames 6. The embedded screws 2 are embedded in the shaft wall of the shaft 1. The wall-attached members 3 are installed on the outer wall of the shaft 1 through the embedded screws 2. The outer operation frame bases 4 are installed and fixed on the wall-attached members 3. The outer operation frames 5 are fixedly connected to the outer operation frame bases 4 and are arranged around the outside of the shaft 1. The inner operation frames 6 are placed inside the shaft 1.

[0035] As Figure 3 shown, it is a schematic diagram of the split structure of the embedded screw 2 of the invention, including a water stop sheet 21, an intermediate screw 22, a connecting sleeve 23, a tapered rubber pad 24, an end screw 25, a nut gasket 26, and a nut 27. The water stop sheet 21 is welded at the middle position between the two intermediate screws 22. External threads are provided at both ends of the intermediate screw 22. A connecting sleeve 23 is welded to one end of the end screw 25. A tapered rubber pad 24 is installed at the middle position between the two. External threads are provided at the other end and are equipped with a nut gasket 26 and a nut 27. Internal threads are provided at the other end of the connecting sleeve 23, and the thread specifications are adapted to the external threads of the intermediate screw 22. Before embedding, the intermediate screw 22 with the water stop sheet 21 is connected to the end screw 25 through the connecting sleeve 23. After installation, the tail distance of the two tapered rubber pads 24 is the same as the wall thickness of the shaft 1.

[0036] As Figure 4 shown, it is a schematic diagram of the structure of the wall-attached member 3 of the present invention, including a wall-attached member outer frame 31, a foldable steel plate 32, and a pressing plate 33. The wall-attached member outer frame 31 is welded by steel plates. Two round holes 311 with the same diameter corresponding to the positions of the embedded screws 2 are left on the steel plate on the side close to the shaft 1. Shaft holes matching the foldable steel plate 32 are provided on the steel plates on both sides. The foldable steel plate 32 is hinged at the shaft holes on both sides of the wall-attached member outer frame 31. The pressing plate 33 is arranged on the bottom plate of the wall-attached member outer frame 31. The foldable steel plate 32 is pushed upward by the outer operation frame base 4 when the outer operation frame 5 is lifted upward, and relies on gravity to reset and fit horizontally on the pressing plate 33 when not under thrust.

[0037] When installing the wall-attached member 3, align the round holes 311 on the steel plate on the side close to the shaft with the embedded screws 2. After the embedded screws 2 pass through, install and tighten the nut gasket 26 and the two nuts 27. The schematic diagram of the connection relationship between the embedded screw 2 and the wall-attached member 3 is as Figure 5 shown.

[0038] As Figure 6As shown in the figure, it is a schematic structural diagram of the outer operation frame base 4 of the present invention. The outer operation frame base 4 is arranged around the wellbore. The frame body includes a lower horizontal steel section 41, a vertical steel section 43, an inclined corbel steel section 44, and an upper horizontal steel section 47. The lower horizontal steel section 41 and the upper horizontal steel section 47 are located on the foldable steel plate 32 of the wall-attached member 3. One end of the inclined corbel steel section 44 is connected to the vertical steel section 43, and the other end is connected to the upper horizontal steel section 47 to form a diagonal bracing structure. The top platform of the upper horizontal steel section 47 is paved with steel plates, and an outer operation frame positioning steel plate 46 and a lifting ear 45 are installed. The lifting ear 45 is connected to the top lifting beam 7 through a lifting tool. A positioning pulley 42 is installed at the position where the inner side of the vertical steel section 43 contacts the outer wall of the wellbore.

[0039] As Figure 7 shown in the figure, it is a schematic structural diagram of the outer operation frame 5 of the present invention. The outer operation frame 5 is stacked vertically by a plurality of single-layer outer operation frames 51 arranged around the wellbore. The distance between its inner side and the outer edge of the wellbore 1 is 300 mm. The bottom of the outer contour is closely attached to the outer operation frame positioning steel plate 46. The side of the outer operation frame 5 is sealed with wire mesh, and ladders 511 are installed on both sides. A single-leaf door 512 is installed on the first layer. Outer operation frame assembly docking joints 513 are provided at the four corners of the outer operation frame 5 to realize the splicing connection between adjacent layers, and bolts are used for fixation between each layer;

[0040] As Figure 8 shown in the figure, it is a schematic structural diagram of the inner operation frame 6 of the present invention. The inner operation frame 6 is a frame structure formed by welding the bottom platform 61 of the inner operation frame and the vertical poles distributed around. It is located on the foldable steel plate 32 of the wall-attached member 3. Retractable inner operation frame positioning pulleys 62 are installed on the vertical poles of the inner operation frame 6, which are folded outwards and tightened against the side wall before the lifting of the inner operation frame 6 body. Lifting points 64 are provided at the top of the inner operation frame 6, and a ladder 63 is provided on one side.

[0041] When constructing the overall lifting operation platform of the wellbore, the construction of the wellbore is mainly completed through the following steps:

[0042] Step 1: Construct the bottom wellbore according to the traditional construction process, and embed embedded screw rods 2 in the middle of the side walls around the wellbore at a position 500 mm below the top surface of the wellbore wall;

[0043] Step 2: Install the wall-attached member 3, the outer operation frame base 4, the outer operation frame 5, and the inner operation frame 6 in sequence;

[0044] Step 3: Workers carry out steel bar binding, formwork installation, and concrete pouring on the operation platform to complete the construction of all layers of the wellbore above the bottom wellbore. When constructing all layers of the wellbore above the bottom wellbore, embedded screw rods 2 are accurately embedded at the corresponding positions on the wellbore wall;

[0045] Step 4: After the formwork of the upper-layer shaft 1 is removed, place each component inside the outer operating scaffold 5 and the inner operating scaffold 6 and fix them firmly. Install the wall-attached member 3 of this layer and carry out concrete curing;

[0046] Step 5: After the concrete strength reaches the requirement, use the hoisting equipment to tow the steel wire rope to lift the hoisting beam 7. Lift the outer operating scaffold base 4, the outer operating scaffold 5 and the removed formwork materials as a whole to a position 300 mm above the wall-attached member 3, and then lower the outer operating scaffold 5 so that it is placed on the foldable steel plate 32 of the wall-attached member 3 on the outside of the shaft 1;

[0047] Step 6: Turn out the inner operating scaffold positioning pulleys 62 around the vertical poles of the inner operating scaffold 6 to press tightly against the side wall. Use the hoisting equipment to lift the inner operating scaffold 6 upward and fix it on the foldable steel plate 32 of the wall-attached member 3 on the inside of the shaft 1, and then retract the inner operating scaffold positioning pulleys 62;

[0048] Step 7: Repeat Steps 3 to 6 to complete the construction of the shaft 1 layer by layer from bottom to top;

[0049] Step 8: Use the hoisting equipment to lift out the outer operating scaffold 5 and the inner operating scaffold 6. While dealing with the tension bolts holes on the shaft 1 for formwork reinforcement, remove the wall-attached member 3, take out the conical rubber pad 24, remove the connecting sleeve 23 and the end screw rod 25, and use slightly expanding cement mortar to seal the holes to complete the entire construction process of the shaft 1.

[0050] Those skilled in the art can easily understand that the above is only a preferred embodiment of the present invention and is not used to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An overall lifting operation platform for a shaft in an ultra-deep shaft, characterized in that It includes embedded bolts, wall-attached members, outer operation frame bases, outer operation frames and inner operation frames. The embedded bolts are embedded in the shaft wall of the shaft. The wall-attached members are installed on the outer wall of the shaft through the embedded bolts. The outer operation frame bases are fixedly installed on the wall-attached members. The outer operation frames are fixedly connected to the outer operation frame bases and are arranged around the outside of the shaft. The inner operation frames are placed inside the shaft. The embedded bolts include water stop sheets, intermediate bolts, connecting sleeves, tapered rubber pads, end bolts, nut washers and nuts. The water stop sheets are welded at the middle positions of two intermediate bolts. Before embedding, the intermediate bolts with water stop sheets are connected to the end bolts through the connecting sleeves. The nut washers and nuts are installed on the external thread sections of the end bolts. After installation, the tail distances of the two tapered rubber pads are the same as the shaft wall thickness. The vertical layout spacing of the embedded bolts is the same as the single-layer construction height of the shaft and is horizontally arranged at the central positions on the four sides of the shaft, and the distance from the top surface of the current-layer shaft is 500 mm. The wall-attached members include wall-attached member outer frames, foldable steel plates and pressing plates. The wall-attached member outer frames are welded by steel plates. There are two round holes with the same diameter corresponding to the positions of the embedded bolts on the steel plate on the side close to the shaft. Shaft holes matching the foldable steel plates are opened on the steel plates on both sides. The foldable steel plates are hinged at the shaft holes on both sides of the wall-attached member outer frames. The pressing plates are arranged on the bottom plates of the wall-attached member outer frames. When the outer operation frame is lifted upward, the foldable steel plates are pushed upward by the outer operation frame bases and fold upward. When not under thrust, they rely on gravity to reset and fit horizontally on the pressing plates. The outer operation frame bases are arranged around the shaft. The frame body includes lower horizontal steel profiles, vertical steel profiles, inclined corbel steel profiles and upper horizontal steel profiles. The lower horizontal steel profiles and the upper horizontal steel profiles are located on the foldable steel plates of the wall-attached members. One end of the inclined corbel steel profiles is connected to the vertical steel profiles, and the other end is connected to the upper horizontal steel profiles to form a diagonal bracing structure. Steel plates are laid on the top platforms of the upper horizontal steel profiles, and outer operation frame positioning steel plates and lifting lugs are installed. The lifting lugs are connected to the top lifting beam through lifting tools. Positioning pulleys are installed at the contact positions between the inner sides of the vertical steel profiles and the outer wall of the shaft. The outer operation frames are stacked vertically by a plurality of single-layer outer operation frames arranged around the shaft. The inner side is 300 mm away from the outer edge of the shaft. The bottom of the outer contour is closely attached to the outer operation frame positioning steel plates. The height of the single-layer outer operation frame is 1.8 m - 2.0 m, and the total height of the outer operation frame is more than 1.2 m higher than the single-layer construction height. The inner operation frames are frame structures welded by inner operation frame bottom platforms and vertical rods distributed around. They are located on the foldable steel plates of the wall-attached members. Removable inner operation frame positioning pulleys are installed on the vertical rods of the inner operation frames and are folded outward to press against the side walls before the inner operation frame body is lifted. Lifting points are provided at the tops of the inner operation frames, and a ladder is provided on one side.

2. The integral hoisting operation platform for a shaft in an ultra-deep shaft according to claim 1, characterized in that, The outer dimensions of the inner operation frames are adapted to the wall-attached members inside the shaft, and the overlapping length with the foldable steel plates is not less than 100 mm.

3. The overall lifting operation platform for the shaft in the ultra-deep shaft according to claim 2, characterized in that, The single-layer height of the internal operation scaffold is 1.8m - 2.0m. The number of scaffold layers can be determined according to the single-layer construction height of the shaft, and the total height of the scaffold is more than 1.2m higher than the single-layer construction height.

4. A construction method for an overall hoisting operation platform of a shaft in an ultra-deep shaft as described in claim 1, characterized in that , The construction method includes the following construction steps: S1: Construct the bottom shaft according to the traditional construction technology, and embed embedded screw rods in the middle of the side walls around the bottom shaft at a position 500mm below the top surface of the bottom shaft wall. S2: Install the wall-attached members, the outer operation scaffold base, the outer operation scaffold and the internal operation scaffold in sequence. S3: Workers carry out steel bar binding, formwork installation and concrete pouring on the operation platform to complete the construction of all layers of the shaft above the bottom shaft. When constructing all layers of the shaft above the bottom shaft, accurately embed embedded screw rods at the corresponding positions on the shaft wall. S4: After the formwork of the upper layer of the shaft is removed, place each component firmly inside the outer operation scaffold and the internal operation scaffold, install the wall-attached members of this layer, and carry out concrete curing. S5: After the concrete strength reaches the requirement, use a hoisting device to tow the steel wire rope to lift the hoisting beam, lift the outer operation scaffold base, the outer operation scaffold and the removed formwork materials as a whole to a position 300mm above the wall-attached members, and then lower the outer operation scaffold so that it is placed on the foldable steel plate of the wall-attached member on the outside of the shaft. S6: Turn out the internal operation scaffold positioning pulleys at the four vertical poles of the internal operation scaffold to press tightly against the side wall, use a hoisting device to lift the internal operation scaffold upward, fix it on the foldable steel plate of the wall-attached member on the inside of the shaft, and then retract the internal operation scaffold positioning pulleys. S7: Repeat steps S3 to S6 to complete the construction of the shaft layer by layer from bottom to top. S8: Use a hoisting device to lift out the outer operation scaffold and the internal operation scaffold. While dealing with the pull bolts holes on the shaft for formwork reinforcement, remove the wall-attached members, take out the conical rubber pads, remove the connecting sleeves and end screw rods, and seal the holes with slightly expanding cement mortar to complete the entire construction process of the shaft.

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