JP2009084049A - Asbestos removing work method in elevator shaft - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a working method capable of removing asbestos in an elevator shaft in an extremely short period of time. <P>SOLUTION: This asbestos removing work method sets an area including a plurality of floors in the elevator shaft 1 as a work space 11 and work floors 14 are arranged at a lowest floor in the work space and at one or more floors above it. The work space is cured by a sheet material to prevent dust from leaking from the work space to outside and each work floor is cured by the sheet material to prevent the removed asbestos and the like from falling down from the work floor. An operator enters from an entrance 17 of each floor arranged with the work floor 14 on the respective floor and asbestos in the elevator shaft is removed at the plurality of floors in parallel. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an operation method for removing asbestos present in an elevator shaft in an existing building.

  In existing buildings, asbestos is often used as a fireproof coating for metal materials and the like, and asbestos is spray-coated on H-shaped steel and the like used as column materials and beam materials in the elevator shaft. In recent years, health problems due to suction of asbestos dust have been pointed out, and asbestos has been banned. For existing asbestos, it is desired to remove, contain, enclose, etc. asbestos in order to prevent scattering due to deterioration and scattering at the time of building demolition. Removal of asbestos in the elevator shaft is desired.

  Conventionally, asbestos in an elevator shaft has been removed by the following procedure. That is, as shown in FIG. 11, in the elevator shaft 1, the elevator car 2 is retracted upward, and enters the elevator shaft 1 from a preset specific floor (usually the lowest floor) to enter the specific floor and A scaffold 3 having a plurality of floors 4 and elevating stairs 5 is assembled so as to be positioned thereon, and the inner surface of the elevator shaft 1 is made of a sheet material so that dust does not leak outside from the space below the elevator car 2. Each work floor 4 is cured with a sheet material so as to prevent asbestos-removed material from falling downward from each work floor 4, and a front room 7a, an air shower room 7b, a changing room (protection) at the entrance of a specific floor A washing machine 7 equipped with a clothing desorption chamber) 7c and the like is installed so that the worker can safely enter and exit the elevator shaft, and the suction shaft connected to the dust removal suction device 8 is connected to the elevator shaft 1. An operator enters the elevator shaft 1 through the washing equipment 7 in a state where negative pressure is sucked into the elevator shaft 1 through the duct 9, and the asbestos in the elevator shaft 1 is removed by using the scaffold 3 (asbestos of asbestos). In order to prevent scattering, spraying of wetting agent, scraping off of asbestos, bagging of removed asbestos, discharging etc.) are performed. At this time, the Occupational Safety and Health Act has a provision that “avoid vertical work as much as possible.” First, the asbestos in the vicinity is removed using the work floor 4 on the top floor of the scaffold 3, and then The operation of moving to the work floor 4 below and removing asbestos in the vicinity thereof is sequentially repeated to remove asbestos in the entire area below the elevator car 2 in the elevator shaft 1. After removing asbestos, cleaning and curing are removed, and then, as necessary, a fireproof covering restoration work for covering the asbestos removal target with a fireproof material is performed, and then the scaffold is removed. Then, lower the elevator car that has been retreated above the elevator shaft, lay a work floor on the floor suitable for work in the upper area of the elevator shaft, build a scaffold on it, and Asbestos removal, fireproof coating restoration, etc. are performed according to procedures.

  However, in the above-described prior art, a high scaffold is assembled in a narrow elevator shaft, and asbestos removal is sequentially performed from the top floor of the scaffold. Therefore, the construction period is extremely long. For example, an elevator shaft of about 10 floors is required. There was a problem that a construction period of 15 to 20 days was required for the construction. In existing buildings, it is not possible to stop the elevator for a long period of time due to entanglement with tenants, especially when there is only one elevator in the building. Although it is said that it is necessary to remove this, it is not possible to implement it easily.

  The present invention has been made in view of such a situation, and it is an object of the present invention to provide a work method capable of removing asbestos in an elevator shaft in a very short period of time, for example, two days on soil and sun. .

  In the invention according to claim 1 of the present invention, in order to be able to remove asbestos in the elevator shaft in a short period of time, an area extending over a plurality of floors in the elevator shaft is set as a work space, and the elevator car is placed in the work space. A process of providing a work floor on the lowest floor in the work space and one or more floors above the work space, and an operator on the work floor from the entrance of each floor where the work floor is provided. It is configured to have a process of removing asbestos in the elevator shaft in parallel on the upper and lower floors.

  In the invention according to claim 2, in order to enable asbestos removal in the elevator shaft to be performed in a shorter period of time, an area extending over a plurality of floors in the elevator shaft is set as a work space, and the elevator car is disposed in the work space. The process of providing work floors on all the floors in the work space while being positioned outside, and an operator enters the work floor from the entrance / exit of each floor where the work floor is provided, and in parallel on the upper and lower floors It is set as the structure which has the process of removing asbestos in an elevator shaft.

  The invention according to claim 3 is the above-described asbestos removal work method according to claim 1 or 2, wherein at least a part of the work floor is detachable from a guide rail provided vertically in the elevator shaft. The guide rail is held by using a support jig provided with a mechanism.

  The invention according to claim 4 is the asbestos removal work method according to any one of claims 1 to 3, wherein the work is performed so that dust does not leak outside from the work space after the work floor is installed. A process of curing the space with a sheet material and curing each work floor with a sheet material so that asbestos-removed materials do not fall downward from each work floor, and a process of providing washing facilities at the entrances and exits of each floor where the work floor is provided And a step of providing a means for sucking negative pressure in the work space, and in a state where the work space is sucked negative pressure, an operator enters the corresponding work floor through each washing equipment, The asbestos removal in the elevator shaft is performed in parallel.

  The invention according to claim 5 is the asbestos removal work method according to any one of claims 1 to 4, wherein the work floor on the lowest floor is removed prior to installation of the work floor in the work space. A safety net is attached below the installation position of another work floor, and then the work floor is installed.

  The invention according to claim 6 is characterized in that asbestos removal of the entire elevator shaft is performed by repeating the steps described in any one of claims 1 to 5 for other regions in the elevator shaft. It is what.

  The invention according to claim 7 is the asbestos removal work method according to any one of claims 1 to 6, wherein the asbestos removal is performed prior to the removal of the work floor after the step of removing asbestos. It is characterized by providing a process for performing fireproof coating on the object.

  In the asbestos removal work method of the invention according to claim 1 of the present application, when asbestos removal of the work space set over a plurality of floors in the elevator shaft, work floors are formed on a plurality of floors including the lowest floor in the work space, Asbestos removal is performed on multiple floors at the same time by adopting a configuration that allows workers to enter and exit the elevator shaft from the entrance / exit of the floor where the work floor is formed, and removes asbestos in parallel on multiple floors where the work floor is installed. Therefore, the work period can be greatly shortened, and it is not necessary to assemble a high scaffold as in the prior art, and the work period can be shortened from this point of view. In this case, the multiple floors are preferably 3 floors or more, more preferably 4 floors or more, and most preferably all floors.

  In the invention which concerns on Claim 2, a work floor is provided in all the floors of the work space set over the several floors in the elevator shaft, respectively, an operator enters on a work floor from the entrance and exit of each floor, and it is parallel on the upper and lower floors. By adopting a configuration for removing asbestos in the elevator shaft, the work period can be further shortened.

  In the invention according to claim 3, at least a part of the work floor is attached to the guide rail by using a support jig provided with a rail clip mechanism that can be attached to and detached from the guide rail provided vertically in the elevator shaft. By having the structure to be held, the work floor can be attached to a desired height, for example, the work floor can be attached at a position away from the upper surface of the beam in the elevator shaft, and the asbestos applied to the upper surface of the beam Can be removed without interfering with the work floor.

  In the invention according to claim 4, the work space is cured with a sheet material, and each work floor is cured with a sheet material so that the asbestos removal material does not fall downward from each work floor. Since each washing equipment is provided with a means for sucking negative pressure in the work space, the work space is passed through each washing equipment on the corresponding work floor in a state where the work space is sucked with negative pressure. Asbestos can be removed from the elevator shaft in parallel on the upper and lower floors, and asbestos can be reliably prevented from scattering into the surrounding environment.

  In the invention according to claim 5, prior to the installation of the work floor, a safety net is attached below the installation location of the work floor, and then the work floor is installed. Therefore, the work floor can be attached in parallel on the upper and lower floors, and the work period can be shortened from this point.

  In the invention which concerns on Claim 6, the asbestos removal of the whole elevator shaft can be performed in a short period of time by repeating the process of any one of Claim 1-5 about the other area | region in an elevator shaft. it can.

  In the invention according to claim 7, the work floor provided for removing asbestos can be used to perform fireproof coating on the target from which asbestos has been removed, and not only asbestos removal but also fireproof coating restoration work can be performed in a short period of time. it can.

  Hereinafter, preferred embodiments of the asbestos removal work method of the present invention will be described. FIG. 1 is a schematic cross-sectional view showing a partial region of an elevator shaft in a state in which the asbestos removal work method according to an embodiment of the present invention is performed. FIG. 2 shows another region of the elevator shaft in which the asbestos removal work method is carried out. It is a schematic sectional drawing shown in the state which does, and the same code | symbol is attached | subjected to the same part as the prior art example shown in FIG. In FIG. 1, first, an area extending over a plurality of floors in the elevator shaft 1 is set as a work space 11 for removing asbestos at a time. After the asbestos removal in the work space 11 as described later, as shown in FIG. 2, the work space 12 is set in another area in the elevator shaft 1 to remove the asbestos. Therefore, the asbestos removal work method of this embodiment divides the entire elevator shaft 1 into a plurality of work spaces and sequentially removes asbestos. The work space 11 to be set first is set from the lower end or the upper end of the elevator shaft. The number of floors included in the work spaces 11 and 12 is based on the total number of floors of the elevator shaft, how many times the elevator shaft is divided to remove asbestos, the number of washable equipment that can be used, the number of workers that can be input, etc. It is preferable to set the number of floors in the work space equal to each time as much as possible from the viewpoint of shortening the work period. For example, for an elevator shaft with 10 floors in total, the work to be set first The space 11 is preferably 5th or 6th floor, and the work space 12 to be set next time is preferably 5th or 4th floor.

  After an area extending over a plurality of floors in the elevator shaft 1 is set in the work space 11, work is performed on the lowest floor in the work space 11 with the elevator car 2 positioned outside (above or below) the work space 11. A floor 14 is provided, and a safety net 15 and a work floor 14 are provided on each floor above. These work floors 14 and safety nets 15 can be installed using the existing beams and guide rails in the elevator shaft 1 by opening the door 18 of the doorway 17 on each floor and entering the elevator shaft 1. Troublesome work such as building a scaffold is not required. In addition, in order to perform the up-and-down operation | work in the elevator shaft 1 safely, each safety net 15 is installed below the installation position of the work floor 15, and the installation work of the work floor 14 is performed after that. If the safety net 15 is installed first, the safety net prevents parts, tools, etc. from falling, so it is possible to work on the top and bottom of the safety net in parallel, thereby shortening the construction period. it can. When the floor below the lowest floor (the bottom surface of the elevator shaft 1) can be used as a work floor, the work floor 14 may be omitted by using it as the work floor.

  As described above, the work floor 14 may be installed using existing beams or guide rails in the elevator shaft 1. For example, a work floor may be mounted on an existing beam using an appropriate support jig, or work may be performed using a support jig having a rail clip mechanism at a desired height position of a vertical guide rail. Although a floor may be attached, it is particularly preferable that at least a part of the work floor 14 is attached to the guide rail. In other words, the existing beam may be covered with asbestos, and when the work floor is held on the beam, the work floor and supporting jig are replaced and the height after removing the asbestos cover to some extent. Adjustment is required, but when the work floor is held on the guide rail, the work floor can be installed at a height that is appropriately separated from the upper surface of the existing beam, and it will interfere with the work floor. Asbestos can be removed from the upper surface of the beam. Hereinafter, an example of a structure for attaching the work floor 14 to the guide rail will be described.

  FIG. 3 is a schematic horizontal sectional view of the elevator shaft 1. In the elevator shaft 1, vertical guide rails 21 and 21 for guiding both side surfaces of the elevator car 2 and vertical surfaces for guiding both side surfaces of the counterweight 24 are shown. Guide rails 22 are provided. The guide rails 21 and 22 have a substantially T-shaped cross section, and include flange portions 21a and 22a and guide portions 21b and 22b perpendicular to the flange portions 21a and 22a. A support jig for supporting the work floor 14 can be attached using the flange portions 21a and 22a.

  FIG. 4 is a schematic horizontal sectional view of the elevator shaft 1 showing a state in which the support jigs 26 and 27 are attached to the guide rails 21 and 22. As shown in FIGS. 5 and 6, the support jig 26 attached to the guide rail 21 for the elevator car is substantially U-shaped and has a support body 29 with both ends extending outwardly at right angles. The clip member 30 for pressing and fixing the flange portion 21 a of the guide rail 21 to the flat portion 29 a at the center of the support 29, the bolt 31 and the nut 32 that fasten the support 29 and the clip member 30, and the support 29 A long support member 35 having an L-shaped cross section, which is fixed to the flange portions 29c at both ends by bolts 33 and nuts 34, is provided. With this configuration, the support body 29 is positioned at a desired height position of the guide rail 21, and the clip member 30 is fastened to the support body 29 with the bolt 31 and the nut 32, whereby the support jig 26 is fixed to the desired position of the guide rail 21. The support jig 26 can be removed from the guide rail 21 by removing the bolt 31 and the nut 32. The support 29, the clip member 30, the bolt 31, the nut 32, and the like constitute a rail clip mechanism in which the support jig 26 can be attached to and detached from the guide rail. In the state where the pair of support jigs 26 and 26 are attached to the guide rails 21 and 21 arranged to face each other, the support member 35 described above is supported so that the support members 35 on both sides are horizontal and parallel to each other. 29 is attached.

  The support jig 27 attached to the counterweight guide rail 22 also includes a substantially U-shaped support 29A and a flat portion 29a at the center of the support 29A, as shown in FIGS. Are provided with a clip member 30 for pressing and fixing the flange portion 22a of the guide rail 22, and a bolt 31 and a nut 32 for fastening the support body 29A and the clip member 30 to the support rail 29A. The support jig 27 can be fixed at a desired height position of the guide rail 22 by fastening the clip member 30 to the support body 29A with the bolt 31 and the nut 32, and the bolt 31. The support jig 27 can be removed from the guide rail 22 by removing the nut 32. Accordingly, the support 29A, the clip member 30, the bolt 31, the nut 32, and the like constitute a rail clip mechanism in which the support jig 27 can be attached to and detached from the guide rail. The support jig 27 further includes a clamp member 37 attached to one side plate portion 29b of the support 29A and a long tubular support member 38 held by the clamp member 37. Here, in the state where the pair of support jigs 27 and 27 are attached to the guide rails 22 and 22 arranged so as to face each other, the clamp members 37 and 37 on both sides can support the single support member 38. It is attached to the support 29A so that it can be held horizontally and at a right angle to the support member 35 of the support jig 26.

  Thus, as shown in FIG. 4, the pair of support jigs 26, 26 are attached to the pair of guide rails 21, 21 at a desired height, and the scaffolds are attached to the pair of support members 35, 35 arranged on both sides. A plate, for example, an extensible scaffolding plate 40 is supported, and a pair of support jigs 27, 27 are attached to the pair of guide rails 22, 22 so as to have a desired height, and the support member 38 and the extensible scaffolding plate 40 are attached. The work floor 14 can be formed at a desired height by supporting the other scaffold plates 41, 42 and the like. Here, the height of the work floor 14 may be determined so as not to interfere with the removal of asbestos on the upper surface of the beam positioned below the work floor 14. The lengths of the support members 35 and 38 may be appropriately determined according to the size of the work floor 14 to be formed.

  In the above-described embodiment, the pair of support jigs 26 and 26 are attached to the pair of guide rails 21 and 21 so that the support body 26 and the support members 35 and 35 are outside. Not only this but as shown in FIG. 9, you may attach so that it may become inside. Further, the other support jigs 27 and 27 may be attached so that the clamp members 37 and 37 and the support member 38 are on the inner side (the elevator car side) with respect to the pair of guide rails 22 and 22. However, as shown in FIG. 4, if the support jigs 26 and 27 are attached to the guide rails 21 and 22 so that the support members 35 and 38 are on the outer side, the elevator car 2 and the counterweight 24 do not interfere with the elevation. It can be installed in advance at an appropriate timing at night when the elevator is not used, and there is an advantage that the operation period for removing asbestos can be shortened by completely stopping the operation of the elevator. Furthermore, in the above embodiment, the support member 35 is made of an L-shaped strip, and the support member 38 is a tubular member. However, the support members 35 and 38 have these cross-sectional shapes. Not limited to this, any one that can support the scaffold plate can be used.

  After the work floor 14 is installed, the ceiling surface and side surfaces of the work space 11 are cured with a sheet material (not shown) such as a plastic film or a plastic sheet so that dust does not leak from the work space 11 to the outside. At this time, a portion where asbestos to be removed is present is naturally exposed. Each work floor 14 is also cured with a sheet material (not shown) such as a plastic film or a plastic sheet so that asbestos-removed materials, tools, etc. do not fall downward from the work floor 14. In addition, after the work floors 14 are cured, air can be circulated between the floors, and a part of the work space 11 can be sucked with a negative pressure, so that the whole area of the work space 11 can be set to a negative pressure. Keep it like that. The structure that allows air to flow between the floors is not particularly limited. As shown in FIG. 1, the short pipe 45 that communicates the upper and lower sides of the work floor 14 has an upper end on the upper surface side of the work floor 14. It is preferable to be provided so as to protrude about 10 to 50 cm from the floor surface. Providing such a short tube 45 provides an advantage that asbestos accumulated on the work floor 14 does not fall downward through the short tube 45. Also, asbestos falls by closing the upper end of the short pipe 45 and providing an opening on the side surface at a position distant from the floor to distribute the upper and lower floors, or by opening an appropriate interval above the upper end opening of the short pipe 45 Changes such as providing a protective cover may be made.

  Next, the washing facilities 7 are provided at the entrances 17 of each floor where the work floor 14 is provided. The washing apparatus 7 is also called a security house, and includes a front room 7a, an air shower room 7b, a changing room (a protective clothing and a removable room) 7c, and the like. Next, the dust removal suction device 8 is installed on the lowest floor, and the suction duct 9 connected thereto is passed through the elevator shaft 1. Thereby, it becomes possible to hold | maintain the working space 11 in the elevator shaft 1 in a negative pressure state. In addition, you may perform installation of the washing apparatus 7 and installation of the dust removal suction apparatus 8 before performing the curing in the elevator shaft 1 or installing the work floor 14 and the safety net 15.

  After the above preparation is completed, the dust removal suction device 8 is operated to keep the work space 11 of the elevator shaft 1 in a negative pressure state, and in that state, the operator passes the washing equipment 7 on each floor, and the worker wears protective clothing. It wears on the work floor 14 of each floor, and asbestos removal work is performed in parallel with each floor. That is, an asbestos scattering prevention humectant is sprayed on the existing asbestos, the asbestos is scraped off with a scraper, a knife or the like, and the asbestos removal product is bagged and discharged. Since these operations are performed in parallel on each floor, they are up and down operations. However, there is no fear of dropping of tools or the like because a work floor 14 is provided between the floors and is cured with a sheet material (not shown). Can be safely implemented. Moreover, since the safety net 15 is also provided, it is safer. And since asbestos removal is performed in parallel on each floor, asbestos removal can be performed in a much shorter period of time compared with the case where asbestos removal is performed one floor from the top as in the past.

  When the removal of asbestos in the work space 11 is completed, the sheet material used for curing is removed. The removed sheet material, the asbestos-removed material packed in the bag, and the like are packed in the changing room 7c of the scouring facility 7 and carried outside. In addition, the worker takes off the protective clothing in the changing room 7c, packs it in a bag, and carries it out. Thus, the worker enters and exits through the washing apparatus 7, and carries out asbestos-removed materials and the like to prevent asbestos from scattering outside the system.

  After the removal of asbestos in the elevator shaft 1 is completed, if necessary, the surface of the metal material to be removed of asbestos is covered with a refractory heat insulating material or the like, and the refractory coating is restored. This operation can also be performed in a very short period of time by using the work floor 14 provided on each floor, and thereafter, each washing equipment 7, the work floor 14, the safety net 15 and the like are removed. Thus, the asbestos removal work for the work space 11 in the elevator shaft is completed.

  Next, the work space 12 is set as shown in FIG. 2 in the area following the work space 11 from which asbestos has been removed first, and the elevator car 2 is moved to a position outside the work space 12. The asbestos removal work is performed in the same manner as the work described above for the work space 11 shown. That is, work floors 14 and safety nets 15 are installed on each floor in the elevator shaft 1, and curing is performed. Washing equipment 7 is installed in front of the doorway 17 on each floor, and asbestos removal work is performed in parallel on each floor. Perform fireproof covering restoration work as necessary. Thereafter, each washing equipment 7, work floor 14, safety net 15 and the like are removed. Thus, the asbestos removal work for the work space 12 in the elevator shaft is completed. When the asbestos removal of the entire area of the elevator shaft 1 is completed by the asbestos removal of the work space 11 and the work space 12, the work is finished. If there is a region where asbestos removal has not yet been performed, the asbestos removal operation is performed in the same manner as described above.

  As described above, in this embodiment, in the work spaces 11 and 12 set over a plurality of floors in the elevator shaft, the work floors are provided on the respective floors, and the washing facilities 7 in which workers enter and exit are provided. Since the asbestos removal work is performed in parallel on each floor, the asbestos removal and the fireproof covering restoration work can be performed in a very short period of time. For example, the work spaces 11 and 12 for the elevator shaft on the 10th floor By completing asbestos removal and fireproof covering restoration work on 5 floors each, work can be completed in 2 days.

  In the above-described embodiment, the work floor 14 is provided on each floor in the work spaces 11 and 12, and the washing equipment 7 is installed in front of the doorway 17 on each floor, and is parallel to all the floors. Asbestos removal and fireproof covering restoration work are performed, but it is not necessary to install the work floor 17 and the washing equipment 7 on every floor, for example, every other floor, every second floor, etc. Changes may be made. FIG. 10 shows an embodiment in that case, a work floor 14 is provided on the lowermost floor of the work space 11, and a safety net 15 and a work floor 14 are provided on the upper floor of the first floor, and Washing equipment 7 is provided in front of the doorway 17 on the floor where the work floor 14 is provided. In this embodiment, asbestos removal and fireproof covering restoration work for the second floor are performed using the respective work floors 14 and using an appropriate step or ladder. Even in this case, since the asbestos removal and the fireproof covering restoration work can be performed in parallel in the upper and lower directions, the work period can be shortened compared to the case where the work is sequentially performed from the top as in the conventional example shown in FIG. be able to. In addition, in order to perform work for two floors from one work floor 14, it may be better to provide a scaffold than using a step ladder or a ladder, but the scaffold in that case may be low and simple, It is possible to work efficiently by building a simple scaffold.

  The preferred embodiments of the present invention have been described above, but the present invention is not limited to these embodiments and can be appropriately changed within the scope of the claims. For example, in the embodiment shown in the drawings, asbestos removal is performed in a state where the working space is sucked to a negative pressure, and there is an advantage that the asbestos dust can be extremely reliably prevented from being scattered to the surrounding environment. By increasing the degree of sealing of the work space, negative pressure suction may be omitted. Moreover, although the washing apparatus 7 is provided in front of the entrance / exit of the floor in which the work floor 14 is provided, this may be omitted in some cases.

Schematic sectional view showing a partial region of the elevator shaft in a state in which the asbestos removal work method according to one embodiment of the present invention is carried out Schematic sectional view showing another region of the elevator shaft in a state where the asbestos removal work method is carried out Schematic horizontal sectional view of elevator shaft Schematic horizontal cross-sectional view of the elevator shaft showing the support rail attached to the guide rail Schematic plan view showing a state where the support jig 26 is attached to the guide rail 21 (A) is a schematic front view taken along the line AA in FIG. 5, and (b) is a schematic side view taken along the line BB in FIG. Schematic plan view showing a state where the support jig 27 is attached to the guide rail 22 (A) is a schematic front view taken along the line AA in FIG. 7, and (b) is a schematic side view taken along the line BB in FIG. Schematic plan view showing a state where the support jig 26 is attached to the guide rail 21 in a manner different from that shown in FIG. Schematic sectional view showing a partial region of the elevator shaft in a state in which the asbestos removal work method of the embodiment different from that shown in FIG. 1 is carried out Schematic sectional view showing a partial region of the elevator shaft in a state where a conventional asbestos removal work method is carried out

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Elevator shaft 2 Elevator car 3 Scaffolding 4 Work floor 5 Stairs 7 Washing equipment 7a Front room 7b Air shower room 7c Changing room (Desorption room for protective clothing, etc.)
8 Dust removal suction device 9 Suction duct 11, 12 Work space 14 Work floor 15 Safety net 17 Entrance / exit 18 Door 21, 22 Guide rail 24 Counterweight 26, 27 Support jig 29, 29A Support 30 Clip member 31, 32 Bolt, Nut 33, 34 Bolt, nut 35 Support member 37 Clamp member 38 Support member 40 Telescopic scaffold plate 41, 42 Scaffold plate 45 Short tube

Claims (7)

  The work space is set on the lowest floor in the work space and one or more floors above the work space with the elevator car positioned outside the work space, and an area extending over multiple floors in the elevator shaft. And an asbestos removal operation method in the elevator shaft, which includes a step in which an operator enters the work floor from the entrance / exit of each floor where the work floor is provided, and performs asbestos removal in the elevator shaft in parallel on the upper and lower floors.   A step of setting a work space on a plurality of floors in an elevator shaft and setting a work floor on each floor in the work space with the elevator car positioned outside the work space; An asbestos removal work method in an elevator shaft, which includes a step in which an operator enters the work floor from an entrance / exit of each floor and removes asbestos in the elevator shaft in parallel on the upper and lower floors.   At least a part of the work floor is held by the guide rail using a support jig provided with a rail clip mechanism that can be attached to and detached from a guide rail provided vertically in an elevator shaft. Item 3. An asbestos removal work method in an elevator shaft according to item 1 or 2.   After the work floor is installed, the work space is cured with a sheet material so that dust does not leak to the outside from the work space, and each work floor is removed from the work floor so that asbestos-removed materials do not fall downward. In the state where the step of curing in, the step of providing the washing equipment respectively at the entrance and exit of each floor provided with the work floor, the step of providing means for sucking negative pressure in the work space, the work space in the state of sucking the negative pressure 4. The asbestos according to claim 1, wherein an operator enters the corresponding work floor through each washing equipment and removes asbestos in the elevator shaft in parallel on the upper and lower floors. 5. To remove asbestos in the elevator shaft.   Prior to installation of the work floor in the work space, a safety net is attached below the installation position of other work floors excluding the work floor on the lowest floor, and then the work floor is installed. Item 5. An asbestos removal work method in an elevator shaft according to any one of Items 1 to 4.   An asbestos removal work method in an elevator shaft, wherein asbestos removal of the entire elevator shaft is performed by repeating the steps according to any one of claims 1 to 5 for other regions in the elevator shaft. .   The asbestos removal work method according to any one of claims 1 to 6, wherein, after the step of removing asbestos, a step of performing a fireproof coating on the target from which the asbestos has been removed is provided prior to the removal of the work floor. Asbestos removal work method in the elevator shaft characterized by this.

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