JP5559526B2 - Sealing device and sealing method for organic solvent working area in soundproof house in shield construction - Google Patents

Description

  The present invention relates to an organic solvent in a soundproof house in shield construction that can prevent health problems caused by an operator inhaling the organic solvent in a segment seal pasting work area (ie, “organic solvent work”) in the soundproof house. The present invention relates to a sealing device and a sealing method for a work area.

  There are various operations and facilities in the soundproof house that is installed at the start shaft of tunnel shield and propulsion work. For example, in the muddy water type and earth pressure type shield methods, there are seal sticking work areas of segments divided by reinforced concrete and steel members used for lining a shield tunnel.

  Since tunnels are often constructed below groundwater, the joint surfaces of the segments need to be waterproof to withstand groundwater pressure, and generally a water expansion system seal is affixed. Since organic solvents such as toluene, xylene, styrene and the like are used for the sticking of the seal, it is an organic solvent operation accompanied by an organic gas.

As a ventilation method in such a soundproof house, an air intake duct and an exhaust duct are usually provided in a single direction as general ventilation, and a method of performing ventilation while mixing and diluting organic solvent vapor is adopted.
In general ventilation, mixed and diluted contaminated air is diffused into the soundproof house and partial contamination of the air is generated. Moreover, ventilation efficiency is inferior, and there are cases where it is inappropriate as ventilation for organic solvent work with stickers.

  A conventional example of a ventilator in a soundproof house of this type will be outlined with reference to FIGS.

  The ventilation device of the soundproof house 151 shown in the same figure is provided with the same height on the front side wall of the house body 152 having a large rectangular parallelepiped box shape as a whole, with side walls on the front, rear, left and right sides and a ceiling, for example. Eleven exhaust ducts 154 are arranged in a row, and for example, eleven intake ducts 153 are arranged on the rear side wall at the same height, and the intake ducts 153 and the exhaust ducts 154 are arranged substantially in the same row. .

  The eleven intake ducts 153 provided on the rear side wall are arranged at a lower position of the side wall. Further, eleven exhaust ducts 154 provided on the front side wall are arranged at a higher position on the side wall.

  In the conventional ventilation device of the soundproof house 151, the intake duct 153 and the exhaust duct 154 are provided in a single direction as a whole ventilation, and the power fan is provided only in the normal exhaust duct 154.

  In FIG. 23, reference numeral 155 is an electric weight shutter, reference numeral 156 is an opening / closing door for an operator, and in FIG. 24, reference numeral 157 is an overhead traveling crane.

  In the configuration of the conventional ventilation device of the soundproof house 151, the harmful gas, dust, air supply air for ventilation in the mine, the heat generated by the mechanical equipment, the flow of the airflow in the soundproof house 151 Ventilation measures are not always sufficient.

  In particular, in the configuration of the ventilation device of the soundproof house 151 by the conventional general ventilation method described above, for example, contaminated air based on the organic solvent generated in the segment seal pasting work area 158 in the soundproof house 151 is diffused in the soundproof house 151. There is a problem that the density of partially contaminated air is generated. Moreover, ventilation efficiency is inferior, and it is insufficient as a sealing measure and ventilation measure in the organic solvent work area where the segment is pasted.

  Patent Document 1 discloses excavation provided at a construction site for shield construction including a sand pit for storing and temporarily storing excavated sediment, a soundproof house provided with a guide rail for traveling a mobile backhoe, and the like. A facility for collecting and transporting earth and sand has been proposed. However, in the case of Patent Document 1, it is presumed that measures for sealing and ventilation are not necessarily sufficient.

JP 2004-204590 A

  The problem to be solved by the present invention is that prevention of health problems caused by workers inhaling organic solvents in the segment seal pasting work (organic solvent work) area in the soundproof house provided at the starting shaft base of the shield tunnel. There is no sealing device or sealing method in this area that can contribute to the improvement of the problem.

An apparatus according to the present invention is a sealing device for an organic solvent working area in a soundproof house in shield construction, and the organic solvent working area is formed by four wall panels on the front, rear, left and right sides of a house body formed in the soundproof house. The base of a frame formed in a rectangular shape and disposed in any one of the wall panel side regions is rotatably connected to the wall panel, and the organic solvent working region is rotated from the wall panel side. an upper covering body which covers the top, the the base shaft member attached to the front of the upper covering body, strip-shaped transparent sheet group was suspended in goodwill shape overlapping up to the floor from the base shaft body, both side portions of said upper covering body A base shaft attached to the base, a belt-like transparent sheet group suspended from the base to the floor, a base transparent body attached to the rear of the upper cover, and a base to the floor and sheets, said The part covering body to said wall panel side, and the side covering the upper portion of the organic solvent working area, an upper covering body drive means adapted to drive rotation over, the most important feature to have.

  According to the first aspect of the present invention, in the organic solvent working area in the soundproof house provided at the start shaft base of the shield tunnel, the organic solvent working area can be sealed and combined with the ventilation device, thereby Can prevent health problems caused by inhalation of organic solvent, and the adoption of a layered warm-type transparent sheet makes it very easy for workers to enter and exit the organic solvent work area, improving work efficiency, and transparent sheet. By adopting, it is possible to see the workers in the organic solvent work area from the outside, which is excellent in terms of occupational safety, and also realizes a sealing device for the organic solvent work area in the soundproof house in shield construction that demonstrates dustproof effect Can be provided.

  According to the second aspect of the present invention, the same effect as that of the first aspect of the invention can be obtained by applying it to the organic solvent working area in the soundproof house, and the extendable base shaft body attached to the front portion of the upper cover. By adopting the above, it is possible to realize and provide a sealing device for the organic solvent working area in the soundproof house in shield construction that can cope with the size of the organic solvent working area.

According to the invention described in claim 3, in the organic solvent working area in the soundproof house provided at the starting shaft base of the shield tunnel, the same effect as that of the invention described in claim 1 is obtained, and the upper cover support / moving means is provided. by to support the side portion of said wall panel side, the movement can be driven along the wall panel wall, organic solvents workspace in the soundproof house in corresponding can shield construction even when an organic solvent workspace is wide Can be realized and provided.

  According to the invention described in claim 4, in the organic solvent working area in the soundproof house provided at the start shaft base of the shield tunnel, the same effect as that of the invention described in claim 1 is obtained, and the frame body supporting / moving means is provided. The organic solvent working area in the soundproof house in the shield construction that can be moved on the rail laid on the floor of the organic solvent working area while supporting the frame body by a rotating wheel, and can cope with the case where the organic solvent working area is wide Can be realized and provided.

  According to invention of Claim 5, based on the structure of the sealing device based on invention of Claim 1, in the organic solvent work area | region in a soundproof house, an organic solvent work area | region can be sealed, and it combines with a ventilation apparatus. By doing so, health hazards caused by workers inhaling organic solvents can be prevented, and work efficiency can be improved, occupational safety can be improved, and a dustproof effect can also be expected. The organic solvent working area sealing method can be realized and provided.

  According to the invention described in claim 6, based on the configuration of the sealing device according to the invention described in claim 2, the organic solvent working area can be sealed in the organic solvent working area in the soundproof house, and the combination with the ventilation device can be performed. By doing so, the same effect as that of the invention of claim 5 can be achieved, and a method for sealing the organic solvent working area in the soundproof house can be realized and provided in shield construction that can cope with the size of the organic solvent working area. be able to.

  According to the seventh aspect of the invention, based on the configuration of the sealing device according to the third aspect of the invention, the organic solvent working area can be sealed in the organic solvent working area in the soundproof house, and the combination with the ventilation device can be performed. In addition to achieving the same effect as that of the invention described in claim 5, a method for ventilating the organic solvent working area in the soundproof house that can cope with the case where there are a plurality of organic solvent working areas is realized. Can be provided.

  According to the invention described in claim 8, based on the configuration of the sealing device according to the invention described in claim 4, the organic solvent working area can be sealed in the organic solvent working area in the soundproof house, and the combination with the ventilation device can be performed. In addition to achieving the same effect as the invention according to claim 5, a method for sealing the organic solvent working area in the soundproof house that can cope with the case where the organic solvent working area exists in a plurality of places is realized. Can be provided.

FIG. 1 is a schematic plan view showing a state where a ceiling of a soundproof house including a sealing device according to Embodiment 1 of the present invention is removed. FIG. 2 is a schematic front view of the soundproof house including the sealing device according to the first embodiment. FIG. 3 is a schematic rear (rear) view of the soundproof house including the sealing device according to the first embodiment. FIG. 4 is a schematic block diagram of the entire control system including the sealing device according to the first embodiment. FIG. 5 is an explanatory diagram showing the ventilation flow at the lower position of the side wall during daytime work in the soundproof house including the sealing device according to the first embodiment. FIG. 6 is an explanatory view showing the ventilation flow at the middle position of the side wall during daytime work in the soundproof house including the sealing device according to the first embodiment. FIG. 7 is an explanatory diagram showing the ventilation flow at the upper position of the side wall during daytime work in the soundproof house including the sealing device according to the first embodiment. FIG. 8 is an explanatory diagram showing the ventilation flow during daytime work in the shaft ventilation facility area and the segment seal pasting work area in the soundproof house according to the first embodiment. FIG. 9 is an enlarged explanatory view showing the ventilation flow during the daytime work in the segment seal pasting work area and the shaft ventilation equipment area in which the sealing device in the soundproof house according to the first embodiment is arranged. FIG. 10 is a schematic perspective view illustrating the configuration of the ventilation device according to the first embodiment. FIG. 11 is a diagram illustrating a plane, a front surface, and a side surface of the segment piece according to the first embodiment. FIG. 12 is a plan view showing the assembled segments according to the first embodiment. FIG. 13 is a table format showing the management concentration of the organic solvent. FIG. 14 is a table format showing an outline of installation of equipment in the organic law. FIG. 15 is a diagram showing an outline of application exclusion. FIG. 16 is an enlarged explanatory view showing the ventilation flow during the daytime work in the segment seal pasting work area and the shaft ventilation equipment area where the sealing device in the soundproof house according to the second embodiment of the present invention is arranged. FIG. 17 is a schematic side view of a segment seal pasting work area in which the sealing device in the soundproof house according to the second embodiment is arranged. FIG. 18 is a schematic enlarged side view of a segment seal pasting work area in which a sealing device in a soundproof house according to Embodiment 3 of the present invention is arranged. FIG. 19 is a schematic side view of a segment seal pasting work area in which a sealing device in a soundproof house according to Embodiment 4 of the present invention is arranged. FIG. 20 is a schematic side view of a segment seal pasting work area in which only a frame constituting the sealing device in the soundproof house according to the fourth embodiment is arranged. FIG. 21 is an explanatory diagram illustrating a moving state of the sealing device in the soundproof house according to the fourth embodiment. FIG. 22 is a schematic front view of the sealing device in the soundproof house according to the fourth embodiment. FIG. 23 is a schematic plan view of a state where a ceiling of a soundproof house including a conventional ventilation device is removed. FIG. 24 is a schematic longitudinal sectional view of a soundproof house including a conventional ventilation device. FIG. 25 is a schematic front view of a soundproof house including a conventional ventilation device. FIG. 26 is a schematic rear (rear) view of a soundproof house including a conventional ventilation device.

  The present invention provides a shield that can contribute to the prevention of health problems caused by an operator inhaling an organic solvent in a segment seal pasting work (organic solvent work) area in a soundproof house provided at a starting tunnel base of a shield tunnel. An object of the present invention is to realize and provide a sealing device and a sealing method for an organic solvent working area in a soundproof house in construction, and the organic solvent working area is sealed in the soundproof house in a shield construction. An upper cover that is disposed in the wall panel side region in the interior and is pivotally connected to the wall panel and covers the upper part of the organic solvent working area in a state of being rotated from the wall panel side, Stretchable base shaft attached to the base, strip-shaped transparent sheet group that hangs from the base shaft to the floor, and hangs in a warm and warm manner, on both sides of the upper cover The base shaft body that is attached, the belt-like transparent sheet group that hangs down from the base shaft body to the floor, and the base shaft body that is attached to the rear of the upper cover, and the base shaft body that hangs down from the base body to the floor The sheet and the upper cover are realized by a structure having a wall panel side and upper cover driving means for rotationally driving over the side covering the upper part of the organic solvent working area.

  Hereinafter, a sealing device and a sealing method for an organic solvent working area in a soundproof house in shielding work according to Embodiment 1 of the present invention will be described in detail with reference to the drawings.

  FIG. 1 shows an entire ventilation system including a sealing device 20 in an organic solvent working area (segment seal pasting work area) of a soundproof house 1 in shield construction according to the first embodiment. It is installed in the house body 2 of the soundproof house 1 shown in FIG. 1 to FIG. 3 which is provided with a soundproof structure in the form of a large rectangular parallelepiped box with a side wall (side wall panel) and a ceiling as a whole. It is configured to perform exhaust.

  In addition, in FIG. 1, the positional relationship of the front-back and left-right about the house main body 2 is defined as shown in the figure, and the following description is given.

  Inside the house body 2 of the soundproof house 1, there are a segment seal pasting work area 3 mixed with an organic solvent, equipment for transporting vehicles such as large trucks, excavated soil carry-in / out work area 4, and modifier. Excavation soil reforming work area 5 by mixing, an air supply device that communicates with the vertical shaft 10 at the front outer side position of the house main body 2 to perform internal air supply, internal exhaust, and vertical shaft ventilation equipment region 6 equipped with an exhaust device, various mechanical equipment Has a mechanical equipment installation area 7 and a muddy water tank group installation area 8 necessary for the muddy water type shield.

  That is, the segment seal pasting work area 3 is at the left rear corner in FIG. 1 of the house body 2, and the equipment and excavating soil loading / unloading work area 4 is at the front and rear sides of the substantially central part in FIG. The excavated soil reforming work area 5 is located on the right side of the equipment and excavated soil loading / unloading work area 4 and close to the rear side wall. 1, the mechanical equipment installation area 7 is installed at the right rear corner of the house body 2 in FIG. 1, and the water tank group installation area 8 is installed at the right front corner of the house body 2 in FIG. 1. ing.

  As shown in FIG. 2, an electric weight shutter 9 is provided on the front side wall of the house main body 2 so as to enter and exit the carriage at a position near the center of the house body. An opening / closing door 11 is provided, and an opening / closing door 11 for an operator is provided on the right side wall of the house body 2 as shown in FIG. FIG. 3 shows an outline of the rear surface of the house body 2.

Next, the entire ventilation system will be described in detail.
As shown in FIG. 1, the ventilation system has at least three side walls of the house main body 2, that is, three side walls on the front side, the rear side, and the left side. In addition, a plurality of intake fans (intake fans) 21 as exhaust means and exhaust fans (exhaust fans) 31 as exhaust means are provided in the same row and in the same row.

  More specifically, a total of 14 intake fans 21 and exhaust fans 31 in the width direction are arranged in a row on each of the front and rear side walls of the house body 2.

  That is, nine intake fans 21 and five exhaust fans 31 are arranged in a row on the front side wall of the house body 2.

  In addition, five intake fans 21 and nine exhaust fans 31 are arranged in a row on the rear side wall of the house body 2.

  The installation state of the 14-piece intake fan 21 and the exhaust fan 31 will be individually described below in accordance with each region described above.

  Front and rear side walls facing each other across the shaft ventilation facility region 6 and the segment seal pasting work region 3 (the front side and the rear side on the left side of the equipment and excavated soil loading / unloading work region 4 in FIG. 1) The five exhaust fans 31, the three intake fans 21 and the two exhaust fans 31 constituting the ventilation device 20 according to the present embodiment are arranged in a row.

  Among these, on the front side wall, five exhaust fans 31 are placed on the upper side of the side wall of the house body 2 (in FIG. 1, C with an octagonal frame: represented in a form in which a capital letter C is surrounded by an octagonal frame: the same applies hereinafter). Lined up.

  On the other hand, on the rear side wall, three intake fans 21 and two exhaust fans 31 are arranged alternately in order from the left side. Among these, the first, third and fifth intake fans 21 from the left are arranged at the upper side wall position (C with octagonal frame), and the second and fourth exhaust fans 31 are at the lower side wall position (A with an octagonal frame). ).

  As a result, each of the first, third, and fifth from the left of the front side wall between the front and rear side walls facing each other across the vertical shaft ventilation facility area 6 and the segment seal pasting work area 3 The exhaust fan 31 and the first, third, and fifth intake fans 21 from the left on the rear side wall face each other in the same row and in the same row.

  Next, three intake fans 21 or exhaust fans 31 are arranged in a row on the front and rear side walls facing each other across the equipment and excavated soil loading / unloading work area 4.

  Among these, on the front side wall, three intake fans 21 are arranged at the lower side wall position (with octagonal frame A), the middle side wall position (with octagonal frame B), and the upper side wall position (with octagonal frame C). Is arranged.

  On the other hand, on the rear side wall, one intake fan 21 and two exhaust fans 31 are arranged in the order of the exhaust fan 31, the intake fan 21, and the exhaust fan 31 from the left side, and one intake fan. Reference numeral 21 denotes an upper side wall position (C with an octagonal frame), and two exhaust fans 31 are arranged at lower side wall positions (A with an octagonal frame).

  As a result, the left and right intake fans 21 on the front side wall and the left side exhaust fan on the rear side wall are located between the front and rear side walls facing each other across the equipment and excavated soil loading / unloading work area 4. 31 and the central intake fan 21 on the front side wall and the central intake fan 21 on the rear side wall are opposed to each other in the same stage.

  Next, three intake fans 21 or three exhaust fans 31 are arranged in a row on the front and rear side walls facing each other across the excavated soil reforming work area 5.

  Among them, three intake fans 21 are arranged in a row on the front side wall. Of the three intake fans 21, the first and third intake fans 21 are in the lower side wall position (A with an octagonal frame) of the house body 2, and the second intake fan 21 is in the middle position of the side wall of the house body 2 ( B) with octagonal frame.

  On the other hand, on the rear side wall, although not shown, one intake fan 21 and two exhaust fans 31 with a wind direction cover are arranged in the order of the exhaust fan 31, the intake fan 21, and the exhaust fan 31 from the left side. In addition, one intake fan 21 is disposed at the upper side wall position (C with octagonal frame), and two exhaust fans 31 are disposed at the lower side wall position (A with octagonal frame).

  As a result, the front and rear side walls facing each other across the excavated soil reforming work area 5 are the first and third intake fans 21 on the front side wall and the first and third side walls on the rear side wall. The exhaust fan 31 is opposed to the same stage in the same row.

  Next, three intake fans 21 or three exhaust fans 31 are arranged in a row on the front and rear side walls facing each other across the water tank group installation area 8 and the mechanical equipment installation area 7. Yes.

  Among them, three intake fans 21 are arranged in a row on the front side wall. Of the three intake fans 21, the first and third intake fans 21 are in the lower side wall position (A with an octagonal frame) of the house body 2, and the second intake fan 21 is in the middle position of the side wall of the house body 2 ( B) with octagonal frame.

  On the other hand, three exhaust fans 31 are arranged in a row on the rear side wall. Of the three exhaust fans 31, the first and third exhaust fans 31 are in the upper side wall position (C with octagonal frame) of the house body 2, and the second exhaust fan 31 is in the middle position of the side wall of the house body 2. (B with octagonal frame).

  As a result, in the front and rear side walls facing each other across the water tank group installation area 8 and the mechanical equipment installation area 7, the central intake fan 21 in the front side wall and the central exhaust in the rear side wall are arranged. The fans 31 face each other in the same row and in the same row.

  A total of four intake fans 21 are arranged in the width direction on the left side wall of the house body 2. Of the four intake fans 21, the two intake fans 21 facing the shaft ventilation facility region 6 are arranged at the side wall lower position (A with an octagonal frame).

  Further, each of the two intake fans 21 constituting the ventilator 20 according to the present embodiment on the left side wall facing the segment seal pasting work area 3 is arranged at the middle position of the side wall (B with octagonal frame). Yes.

  Next, the sealing device 20 according to the first embodiment will be described in more detail with reference to FIGS. 8, 9, and 10.

  The sealing device 20 according to the present embodiment is disposed in the segment seal pasting work area 3 as shown in FIG.

  The sealing device 20 is attached to the upper part of the segment seal pasting work area 3 below the overhead traveling crane 32, and is attached to and detached from the projecting end side of the upper cover 22 via the base shaft 30. A first side cover 23 that is attached as a transparent sheet group by placing a belt-like transparent sheet 29 that can be attached and covers the front side surface (front part) of the segment sticking work area 3 in a warm and warm manner; The base shaft bodies 30a and 30b attached to both sides of the upper cover 22, and the transparent sheets 29 are stacked from the base shaft bodies 30a and 30b to the floor, respectively, and are suspended in a warm shape to form a belt-like transparent sheet group. 2, a third side cover 23a, 23b, a base shaft 30c attached to the rear portion of the upper cover 22, and a transparent sheet 29a hanging from the base shaft 30c to the floor, for example, Serial and an upper covering body 22 has an upper covering body drive means 24 for driving rotation, the.

  Around the sealing device 20, the upper side of the segment seal pasting work area 3 attached to the left side wall and surrounded by the upper cover 22 and the side cover 23, and the front end side and the rear end side Are attached to the lower side of the rear side wall corresponding to the segment seal pasting work area 3 and the organic solvent gas generated by the organic solvent operation is sent to the lower side of the rear side wall. In addition, two exhaust fans 31 are provided for exhausting to the outside of the rear of the house main body 2 from the two locations on the center left side and the center right side of the segment seal pasting work area 3.

  The upper cover 22 employs a lightweight steel frame and includes a base end side frame 25 formed in a rectangular shape. The base end frame 25 is pivotally supported on a rear wall by a pivot support 28. In addition, the base shaft body 30 is attached to the protruding end side portion of the base end side frame 25 and the transparent sheet 27 is stretched. Further, base shaft bodies 30 a and 30 b are attached to both side portions of the base end side frame 25, and a transparent sheet 29 is stretched. Further, a base shaft body 30c is attached to the base portion of the base end side frame 25, and a seat 29a is stretched.

  The upper cover drive means 24 is disposed on the electric winch 34 installed on the floor surface (or ground) on the rear side wall in the segment seal pasting work area 3 and on the upper side wall behind the segment seal pasting work area 3. A pulley 35, and a suspension wire 36 having one end wound around the electric winch 34 and hung around the outer periphery of the pulley 35 and the other end engaged with the protruding end of the base frame 25 are provided. 9, when the electric wire winch 34 is rotated based on the operation of the operation switch 37, the suspension wire 36 is wound or fed out so that the base frame 25 of the upper cover 22 is positioned along the rear side wall as shown in FIG. 9. And a position that covers the upper portion of the segment seal pasting work area 3 and is rotated by approximately 90 degrees.

  In FIGS. 9 and 10, reference numeral 38 denotes a stopper for the base frame 25 fixed to the rear side wall.

The first side cover 23 is a rod-like member that is detachably attached to a protruding end side portion of the base end side frame 25 that is rotated by approximately 90 degrees in a manner such as hooking (not shown). It is a strip-shaped transparent sheet group that hangs from the base shaft body 30 to the floor and hangs down in a warming manner, and the adjacent long sides of the strip-shaped transparent sheets 29 are polymerized, and the air on the front and rear sides of the transparent sheet group It is configured to block.
The second and third side surface covers 23a and 23b have the same configuration.

  In addition, the first side surface covering member 23 uses a band-like transparent sheet group that hangs down in a warm and warm manner as described above, so that an operator inside the segment seal pasting work area 3 can be visually recognized from the outside. In addition, the operator can freely move in and out of the segment seal pasting work area 3 by separating between the transparent sheets 29. The second and third side surface coverings 23a and 23b also exhibit similar actions and effects.

  Next, a control system related to the entire ventilation system will be described with reference to FIG.

  The entire ventilation system includes a shield, a daytime work mode in the soundproof house 1 for propulsion work, a night work mode, a keyboard for setting a ceiling ventilation mode, an input unit 41 including a touch panel, and the daytime of the ventilator according to this embodiment. A program memory 42 preliminarily storing operation programs relating to the work mode, night work mode, and ceiling ventilation mode, a total of 32 intake fans 21 and exhaust fans 31, a total of 32 on / off drive units 43, various character information, and the like And a control unit 40 for individually controlling the on / off driving units 43 based on an operation program corresponding to each mode set by the input unit 41.

  The entire ventilation system further includes an operation switch 37 for turning on and off the electric winch 34 constituting the sealing device 20 according to the first embodiment.

  Next, an overall ventilation method including the sealing device 20 in the soundproof house 1 will be described with reference to FIGS.

  When the operator operates the input unit 41 and sets the daytime work mode, the control unit 40 individually controls the on / off drive units 43 based on the operation program corresponding to the set daytime work mode, The intake fan 21 and the exhaust fan 31 are turned on in the manner shown in FIGS. 5 to 7, and ventilation of each area in the soundproof house 1 is performed as follows.

  That is, the ventilation flow (A layer ventilation flow with an octagonal frame) by the intake fans 21 and the exhaust fans 31 at the lower side wall position (A with the octagonal frame) in the soundproof house 1 in this case is performed as shown in FIG. .

  Specifically, as shown in FIG. 5, intake air from two intake fans 21 arranged on the left side wall is supplied in the shaft ventilation facility area 6, and provided in the rear side wall in the segment seal pasting work area 3. Exhaust by the two exhaust fans 31 is executed, and in the equipment and excavated soil carry-in / out work area 4, exhaust by the two exhaust fans 31 provided on the rear side wall is executed, and the excavated soil reforming work area 5, intake by one intake fan 21 provided on the front side wall and exhaust by two exhaust fans 31 provided on the rear side wall are executed. In the tank group installation region 8, 2 provided on the front side wall is executed. Intake by the individual intake fans 21 is executed.

  Moreover, the ventilation flow (B layer ventilation flow with an octagon frame) by each intake fan 21 and the exhaust fan 31 of the side wall middle position (B with the octagon frame) in the soundproof house 1 is as shown in FIG.

  Specifically, in the segment seal pasting work area 3, suction is performed by two intake fans 21 arranged on the left side wall, and in the excavated soil reforming work area 5, one intake fan arranged on the front side wall. In the mechanical equipment installation area 7 and the water tank group installation area 8, intake by one intake fan 21 arranged on the front side wall and one exhaust fan provided on the rear side wall are performed. Exhaust by 31 is executed.

  Furthermore, the ventilation flow (C layer ventilation flow with an octagonal frame) by each intake fan 21 and exhaust fan 31 at the upper side wall position (C with an octagonal frame) in the soundproof house 1 is as shown in FIG.

  Specifically, in the shaft ventilation facility region 6 and the segment seal pasting work region 3, intake by three intake fans 21 arranged on the rear side wall and five exhaust fans 31 arranged on the front side wall are provided. In the equipment and excavation soil loading / unloading work area 4, the intake by the three intake fans 21 arranged on the front side wall and the one intake fan 21 arranged on the rear side wall are performed. Inhalation is executed.

  In the excavated soil reforming work area 5, exhaust is performed by one exhaust fan 31 disposed on the rear side wall, and in the mechanical equipment installation area 7, exhaust by two exhaust fans 31 disposed on the rear side wall is performed. Executed.

  Among the A, B, and C layer ventilation flows with the octagonal frame shown in FIGS. 5 to 7 described above, the state of each layer ventilation flow described above in the shaft ventilation facility region 6 and the segment seal pasting work region 3 (the upper portion) FIG. 8 shows the case where the cover 22 and the side cover 23 are not used.

  That is, since the mine exhaust from the inside of the pit is exhausted to the top of the shaft, the exhaust flow from the shaft 10 in the shaft ventilation facility region 6 can be quickly exhausted by the exhaust fan 31 at the lower side wall position (A with an octagonal frame). .

  Moreover, fresh air is supplied into the shield mine from the intake fan 21 provided at the lower side wall position (A with an octagonal frame) of the left side wall through the vertical shaft ventilation facility region 6.

  Further, since the organic solvent gas generated in the segment seal pasting operation area 3 in the segment seal pasting work area 3 is heavier than air and settles, it is not diffused by the exhaust fan 31 at the rear side wall lower position (A with the octagonal frame). It is possible to exhaust in the shortest airflow area.

  Furthermore, since an airflow region is formed by the intake fan 21 and the exhaust fan 31 in the same row at the upper side wall position (C with an octagonal frame) in the soundproof house 1, the organic solvent gas is placed in the lower position in the soundproof house 1. It becomes possible to exhaust while confining in position.

  Next, a ventilation method of the segment seal pasting work area 3 including the sealing device 20 according to the present embodiment will be described in detail with reference to FIG.

  In this ventilation method, the segment seal is attached in a state where the upper cover 22 is rotated by approximately 90 degrees from the rear side wall by the upper cover driving means 24 using the electric winch 34, the pulley 35 and the suspension wire 36. Cover the top of region 3.

  Next, the base shaft body 30 is detachably attached to the projecting end side portion of the upper cover body 22 rotated approximately 90 degrees, and a plurality of transparent sheets 29 are stacked to form a belt-like transparent sheet group. It hangs down to the floor. Further, the base shaft bodies 30a and 30b are attached to both side portions of the upper cover 22, and a group of transparent sheets 29 made of a plurality of transparent sheets 29 are suspended and suspended down to the floor. Further, the base shaft 30c is attached to the base of the base end side frame 25, and the seat 29a is suspended down to the floor.

  Thus, a sealed space is formed by the transparent sheet 29 and the sheet 29a so as to surround the upper portion, the front side surface, the both side surfaces, and the rear surface of the segment seal pasting work area 3, and from above the segment seal pasting work area 3 The flow of airflow to the side and rear is interrupted.

  Next, the two intake fans 21 attached to the left side wall intake air from the outside of the sealed segment seal pasting work area 3 toward the upper side, and two exhausts attached to the rear side wall. The organic solvent gas generated by the organic solvent operation is exhausted from the rear portion of the rear side wall of the rear side wall of the segment seal pasting work area 3 to the outside.

  Thereby, the organic solvent gas that slightly leaks from the sealed segment seal pasting work area 3 can be exhausted to the outside.

  Ventilation efficiency of the segment seal pasting work area 3 according to the combination of the sealing device 20 in the segment seal pasting work area 3 according to the first embodiment described above and the sealing method using the sealing device 20 and ventilation by the ventilation system. In addition, the exposure time of the organic solvent gas to the worker who is working can be reduced.

  Further, according to the sealing device 20 and the sealing method using the sealing device 20, the upper cover 22, the first side cover 23, the second and third side covers 23a and 23b, and the sheet 29a are used. By installing the sealed space, the diffusion of the organic solvent gas to other work areas in the soundproof house 1 can be prevented, and the influence of the organic solvent gas on workers of other work can be prevented.

  Further, the concentrated exhaust from the sealed space has an advantage that it is easy to take an exhaust measure such as an exhaust location outside the soundproof house 1, dilution, and removal.

  Further, the sealing device 20 facilitates removal and storage of the upper cover 22, the first side cover 23, the second and third side covers 23a and 23b, and the seat 29a after use. There is also an advantage that it can be carried out and the handleability is simple.

  Furthermore, the sealing device 20 includes the transparent sheet 27 of the upper cover 22, the first side cover 23, the second and third side covers 23a and 23b, the superheated transparent sheet 29, and the sheet 29a. Thus, it is possible to exhibit a dustproof effect that can prevent dust from entering the segment seal pasting work area 3.

  In addition, the adoption of the layered warming type transparent sheet 29 makes it very easy for the operator to enter and exit the segment seal pasting work area 3 and the work efficiency is improved. Workers can be seen from the outside, and there is an advantage in terms of occupational safety.

  FIGS. 11 and 12 show an arcuate, five-part steel segment piece 45 and five steel segment pieces 45 for performing seal sticking using an organic solvent in the segment seal sticking work area 3 according to this embodiment. The assembly drawing of the cylindrical segment 46 of diameter 2000mm and width 1000mm used is shown.

  FIG. 13 shows an example of the management concentration of various organic solvents used in the segment seal pasting work area 3 according to this embodiment.

Next, specific examples of the seal sticking work (organic solvent business) in the segment sticking work area 3 according to this embodiment are as follows.
In other words, the applicable laws for sticking work are the Occupational Safety and Health Act, Organic Solvent Poisoning Prevention Rules (Organic Rules), and (Category: Type 2 Organic Solvents). FIG. 15 shows an outline of application exclusion.

(1) As the seal adhesive, for example, a chloroprene rubber solvent-type adhesive (mixture) such as toluene, hexane (n-hexane), ethyl acetate, cyclohexane or the like is used.

(2) Organic solvent consumption (standard)
Consider the standard minimum diameter of the shield. As the diameter increases, the work efficiency also improves, so the number of rings to which the seal is attached decreases, but the consumption increases.
A. Example of segment Steel segment ・ Outer diameter 2000mm (5 divisions)
・ Width 1000mm
B. Consumption • Amount of sticker used: 20 g / m
・ Seal sticking extension: 12.28m / Ring
・ Amount used per ring W1 = 20 × 12.28 = 245.6 g
C. Number of sticker segments per day Number 8 Ring Both numbers 16 Ring 2 days (32 Rings) (Normally 2 days)
Usage W2 = 245.6 × 32 = 7859.2g
D. Working time (usually 1 person) 6-8 hours (working place, skill level)
E. Time consumption Wh = 7859.2 / 6 = 1309.9 g / h

(3) Organic law exemption allowable consumption W (g) (Organic Law Article 3)
・ W = 2/5 × A = 2/5 × 150 = 60g
Here, A: workplace air volume ^(m 3), and 150 meters ³ If air volume is greater than 150 meters ^3.

(4) Application of organic laws, exemptions ・ Wh = 1309 g / h
・ W = 60g
・ Applied from Wh> W.

  Next, a sealing device 20A in an organic solvent working area in a soundproof house and a sealing method using the sealing device 20A in shield work according to Embodiment 2 of the present invention will be described with reference to FIGS.

  Since the basic configuration of the sealing device 20A according to the second embodiment is the same as that of the sealing device 20 according to the first embodiment, the same components are denoted by the same reference numerals, and detailed description thereof is omitted.

  In the sealing device 20A according to the second embodiment, the structure of the base shaft body 30 attached to the front portion of the upper cover body 22 is extendable with respect to the base end side frame 25, and a belt-like transparent sheet extends from the base shaft body 30 to the floor. A feature is that the first side cover 23 formed as a transparent sheet group is arranged in a warm and warm manner, and is arranged as a transparent sheet group.

  As a configuration example of the base shaft body 30, for example, a double structure in which a rectangular stretchable frame 26 is slidable with respect to the base end side frame 25, a transparent sheet 27 is stretched on the stretchable frame 26, and the protrusion An example in which the transparent sheet 29 is stacked from the end side and suspended in a warm manner can be given.

  FIG. 17 shows the region of the second side cover 23a with hatching.

  According to the sealing device 20A according to the second embodiment and the sealing method using the sealing device 20A, while exhibiting the same operation and effect as in the first embodiment, by adjusting the expansion / contraction position of the expansion / contraction frame 26, There is an advantage that the sealing range can be adjusted according to the size difference of the segment seal pasting work area 3.

  Next, the sealing device 20B in the organic solvent working area in the soundproof house in the shield construction according to the second embodiment of the present invention and the sealing method using the sealing device 20B will be described with reference to FIG.

  Since the basic configuration of the sealing device 20B according to the third embodiment is the same as that of the sealing device 20 according to the first embodiment, the same components are denoted by the same reference numerals, and detailed description thereof is omitted.

  The sealing device 20B according to the third embodiment replaces the shaft support portion 28 in the sealing device 20 according to the first embodiment with an upper covering of the side on the wall surface behind the upper cover 22 constituting the sealing device 20B itself. It is characterized by being configured to be supported by the body support / moving means 47 and to be driven to move along the wall surface.

  That is, the upper cover support / moving means 47 is a moving gantry in which the upper cover 22 is attached by engaging the moving guide wheels 48a and 48b with the rail 51 arranged vertically on the wall surface and in the horizontal (horizontal) direction. The moving gantry 49 is driven in the lateral (horizontal) direction using a coupling mechanism (not shown).

  Further, the upper cover 22 is rotatably supported by a support member 50 having one end attached to the movable frame 49.

  According to the sealing device 20B and the sealing method using the sealing device 20B according to the third embodiment, the same operation and effect as those in the first embodiment are exhibited, and the upper cover 22 and thus the sealing device 20B itself are mounted. There is an advantage that when the segment sticking work area 3 is wide, the sticking work can be divided and the loading and unloading of the segments can be performed simultaneously.

  Next, a sealing device 20C in an organic solvent working area in a soundproof house in shield construction according to Embodiment 4 of the present invention and a sealing method using the sealing device 20C will be described with reference to FIGS.

  In the sealing device 20C according to the fourth embodiment, the same components as those of the sealing device 20 according to the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

  The sealing device 20C according to the fourth embodiment employs a frame body 61 having a rectangular parallelepiped shape surrounding the segment seal pasting work area 3 instead of the structure of the sealing device 20 according to the first embodiment. The upper cover 22 is attached to the upper end surface of the body 61, the first side cover 23 is disposed on the front part of the frame 61, the second side cover 23 a and the third side cover 23 a on both sides of the frame 61. A side cover 23b is attached, and a sheet 29a similar to that described above is disposed at the rear of the frame 61.

  Further, a rotating wheel 63 is attached to the bottom of the four columns 62 constituting the frame body 61, thereby constituting a frame body supporting / moving means 65. As shown in FIG. 22, the frame support / moving means 65 includes a drive motor 66, and moves the sealing device 20 </ b> C with automatic power by the operation of the drive motor 66.

  Further, as shown in FIGS. 20 and 21, two rails 64 are laid on the floor of the segment seal pasting work area 3, and the rotary device 63 is placed on the rails 64 to illustrate the sealing device 20 </ b> C itself. 21 is movable in the direction indicated by the arrow.

  According to the sealing device 20C and the sealing method using the sealing device 20C according to the fourth embodiment, the same operation and effect as in the first embodiment are exhibited, and the sealing device 20C is supported by the frame support / moving means 65. Since it can be arbitrarily moved on the rail 63 laid on the segment seal attaching work area 3 itself, there is an advantage that it can easily cope with the case where the segment seal attaching work area 3 exists in a plurality of places.

  The sealing device and the sealing method of the present invention can be widely applied not only when applied to the work area where the above-described segment seal is applied, but also for sealing a building having various work places in which an organic solvent is used. .

DESCRIPTION OF SYMBOLS 1 Soundproof house 2 House body 3 Segment seal pasting work area 4 Excavation soil carrying in / out work area 5 Excavation soil reforming work area 6 Vertical ventilation equipment area 7 Mechanical equipment installation area 8 Water tank group installation area 9 Electric weight shutter 10 Vertical shaft 11 Opening / closing door 20 Sealing device 20A Sealing device 20B Sealing device 20C Sealing device 21 Intake fan 22 Upper cover 23 First side cover 23a Second side cover 23b Third side cover 24 Upper cover drive means 25 Base end side frame DESCRIPTION OF SYMBOLS 26 Telescopic frame 27 Transparent sheet 28 Shaft support part 29 Transparent sheet 30 Base shaft body 30a Base shaft body 30b Base shaft body 30c Base shaft body 31 Exhaust fan 32 Overhead traveling crane 34 Electric winch 35 Pulley 36 Suspension wire 37 Operation switch 38 Stopper 40 Control part 41 Input part 42 Program memory 43 On-off drive unit 4 DESCRIPTION OF SYMBOLS 4 Display part 45 Steel segment piece 46 Segment 47 Upper cover support / movement means 48a Movement guide wheel 48b Movement guide wheel 49 Movement stand 50 Support member 51 Rail 61 Frame body 62 Support | pillar 63 Rotary wheel 64 Rail 65 Frame body support / movement means 66 Drive motor

Claims (8)

A sealing device for an organic solvent working area in a soundproof house in shield construction,
The organic solvent working area is disposed in any one of the wall panel side areas of the front, rear, left and right wall panels of the house body formed in the soundproof house,
An upper cover covering the upper part of the organic solvent working area in a state where the base of the frame formed in a rectangular shape is rotatably connected to the wall panel and rotated from the wall panel side;
A base shaft body attached to the front portion of the upper cover, and a strip-shaped transparent sheet group that hangs down in a warm and warm manner from the base body to the floor,
A base shaft body attached to both sides of the upper cover, and a strip-shaped transparent sheet group that hangs down in a warm and warm manner from the base body to the floor,
A base shaft attached to the rear part of the upper cover, and a sheet suspended from the base body to the floor,
Upper cover driving means adapted to rotationally drive the upper cover over the wall panel side and the side covering the upper part of the organic solvent working area;
A device for sealing an organic solvent working area in a soundproof house in shield construction, characterized by comprising: A sealing device for an organic solvent working area in a soundproof house in shield construction,
The organic solvent working area is disposed in any one of the wall panel side areas of the front, rear, left and right wall panels of the house body formed in the soundproof house,
An upper cover covering the upper part of the organic solvent working area in a state where the base of the frame formed in a rectangular shape is rotatably connected to the wall panel and rotated from the wall panel side;
A stretchable base shaft attached to the front of the upper cover, and a strip-shaped transparent sheet group that hangs down in a warm and warm manner from the base shaft to the floor,
A base shaft body attached to both sides of the upper cover, and a strip-shaped transparent sheet group that hangs down in a warm and warm manner from the base body to the floor,
A base shaft attached to the rear part of the upper cover, and a sheet suspended from the base body to the floor,
Upper cover driving means adapted to rotationally drive the upper cover over the wall panel side and the side covering the upper part of the organic solvent working area;
A device for sealing an organic solvent working area in a soundproof house in shield construction, characterized by comprising: A sealing device for an organic solvent working area in a soundproof house in shield construction,
The organic solvent working area is disposed in any one of the wall panel side areas of the front, rear, left and right wall panels of the house body formed in the soundproof house,
An upper cover covering the upper part of the organic solvent working area in a state where the base of the frame formed in a rectangular shape is rotatably connected to the wall panel and rotated from the wall panel side;
A base shaft body attached to the front portion of the upper cover, and a strip-shaped transparent sheet group that hangs down in a warm and warm manner from the base body to the floor,
A base shaft body attached to both sides of the upper cover, and a strip-shaped transparent sheet group that hangs down in a warm and warm manner from the base body to the floor,
A base shaft attached to the rear part of the upper cover, and a sheet suspended from the base body to the floor,
To support the side portion of the wall panel side of said upper covering body, an upper covering body supporting and moving means adapted to move the drive along the wall panel wall,
A device for sealing an organic solvent working area in a soundproof house in shield construction, characterized by comprising: A sealing device for an organic solvent working area in a soundproof house in shield construction,
A frame of a frame structure having a rectangular parallelepiped shape surrounding the organic solvent working area;
An upper cover covering the upper part of the organic solvent working area attached to the upper end surface of the frame;
A base shaft body attached to the front of the frame body, and a strip-shaped transparent sheet group that hangs down from the base shaft body to the floor and hangs down in a warming manner,
A base shaft attached to both sides of the frame, and a strip-shaped transparent sheet group that hangs down from the base shaft to the floor and hangs down in a warm,
A base body attached to the rear part of the frame body, and a sheet hanging down from the base body to the floor,
A frame support / movement having a rotating wheel attached to the bottom of the column constituting the frame and a rail laid on the floor of the organic solvent working area, the frame being movable in the rail laying direction. Means,
A device for sealing an organic solvent working area in a soundproof house in shield construction, characterized by comprising: A method of sealing an organic solvent working area in a soundproof house in shield construction,
The organic solvent working area is disposed in any one of the wall panel side areas of the front, rear, left and right wall panels of the house body formed in the soundproof house,
A step of covering an upper portion of the organic solvent working area in a state in which an upper cover that pivotally connects a base portion of a rectangular frame to the wall panel is rotated from the wall panel side by an upper cover driving means. When,
A step of covering the front portion of the organic solvent workspace by a transparent sheet group of strip hanging down in goodwill shape overlapping the base shaft member attached to a front portion of the upper cover member up to the floor,
A step of covering both side portions of the organic solvent workspace by a transparent sheet group of strip hanging down in goodwill shape superimposed from the installed base shaft body on both sides up to the floor of the upper covering body,
A step of covering the upper portion of the organic solvent working area by a sheet hanging down up to the floor from the base shaft member attached to a rear portion of said upper covering body,
A method for sealing an organic solvent working area in a soundproof house in shield construction characterized by comprising: A method of sealing an organic solvent working area in a soundproof house in shield construction,
The organic solvent working area is disposed in any one of the wall panel side areas of the front, rear, left and right wall panels of the house body formed in the soundproof house,
A step of covering an upper portion of the organic solvent working area in a state in which an upper cover that pivotally connects a base portion of a rectangular frame to the wall panel is rotated from the wall panel side by an upper cover driving means. When,
Covering the front part of the organic solvent working area with a band-shaped transparent sheet group that hangs down in a warming manner from the stretchable base shaft attached to the front part of the upper cover to the floor; and
A step of covering both side portions of the organic solvent workspace by a transparent sheet group of strip hanging down in goodwill shape superimposed from the installed base shaft body on both sides up to the floor of the upper covering body,
A step of covering the upper portion of the organic solvent working area by a sheet hanging down up to the floor from the base shaft member attached to a rear portion of said upper covering body,
A method for sealing an organic solvent working area in a soundproof house in shield construction characterized by comprising: A method of sealing an organic solvent working area in a soundproof house in shield construction,
The organic solvent working area is disposed in any one of the wall panel side areas of the front, rear, left and right wall panels of the house body formed in the soundproof house,
Covering the upper part of the organic solvent working area with an upper cover that is driven to move by the upper cover support and moving means;
A step of covering the front portion of the organic solvent workspace by a transparent sheet group of strip hanging down in goodwill shape overlapping the base shaft member attached to a front portion of the upper cover member up to the floor,
A step of covering both side portions of the organic solvent workspace by a transparent sheet group of strip hanging down in goodwill shape superimposed from the installed base shaft body on both sides up to the floor of the upper covering body,
A step of covering both side portions of the organic solvent working area by said depending from the base shaft member attached to a rear portion of the upper cover member up to the floor sheet,
While supporting the side of the upper cover on the wall panel side, along the wall panel wall surface,
A method for sealing an organic solvent working area in a soundproof house in shield construction characterized by comprising: A method of sealing an organic solvent working area in a soundproof house in shield construction,
Covering the upper part of the organic solvent working area with an upper cover attached to the upper end surface of the frame of the frame structure having a rectangular parallelepiped shape surrounding the organic solvent working area;
Covering the front part of the organic solvent working area with a band-shaped transparent sheet group that is suspended from the base body attached to the front part of the frame body to the floor and suspended in a warming manner;
Covering both sides of the organic solvent working area with a band-shaped transparent sheet group that is suspended from the base body attached to both sides of the frame to the floor and suspended in a warming manner,
Covering the rear part of the organic solvent working area with a sheet hanging from the base body attached to the rear part of the frame to the floor;
A step of moving the frame body in the rail laying direction by a frame body supporting / moving means having a rotating wheel attached to the bottom of the column constituting the frame body and a rail laid on the floor of the organic solvent working area. When,
A method for sealing an organic solvent working area in a soundproof house in shield construction characterized by comprising:

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