JP2011084928A - Ventilating device and ventilating method for excavated soil reforming work area in soundproof house in shield/propulsion construction work - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ventilating device for an excavated-soil reforming work area in a soundproof house in shield/propulsion construction work, which precisely evacuates dust in the soundproof house, especially in the excavated-soil reforming work area so as to provide a favorable work environment in addition to an essential soundproofing function. <P>SOLUTION: The ventilating device for the excavated-soil reforming work area 5 in the soundproof house in the shield/propulsion construction having front and rear side walls facing the excavated soil reforming work area 5 includes air intake fans 21 arranged in rows at a lower position and a middle position on the front side wall, air outlet fans 31 arranged at a lower position on the rear side wall and air intake fans 21 arranged at an upper position on the rear side wall. Furthermore, the device includes a mist generator 45 which is suspended from a ceiling of the excavated-soil reforming work area 5 to be vertically movable and sprays water mist over the dust produced during the excavated-soil reforming work. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  In addition to the original soundproofing function, the present invention accurately exhausts dust especially in the excavated soil reforming work area in the soundproofed house to improve the working environment, and the excavated soil reforming work area in the soundproofed house in the propulsion work. The present invention relates to a ventilation device and a ventilation method.

  There are various operations and facilities in the soundproof house that is installed at the start shaft of shield and propulsion work.

  For example, the excavated soil of a muddy water type shield is divided into primary treated soil (sand, gravel, solid soil) and secondary treated soil by a muddy water treatment facility. In some cases, a reforming material such as a lime-based material or a lime-based material is stirred and mixed to be reformed, disposed, and recycled, and an excavated soil reforming work area is provided for this purpose, and this area is a dust work.

  In the case of this muddy water type shield system, the excavated soil treated by the primary treatment machine is stored in the earth and sand pit, where a modifier (cement-based, lime-based, etc.) is added, stirred and mixed in the backhoe, It is reformed to the required strength (uniaxial compressive strength, cone index) and loaded onto a work vehicle such as a dump truck.

  Also, in the case of excavated soil of earth pressure type shields, clay, polymer materials, etc. are generally added to plastically fluidize the shield soil. In the soundproof house, there is an excavation soil reforming work area for mixing and disposing and recycling cement-based and lime-based reforming materials, and in this case also dust work.

  Such special ventilation measures for dust work in the soundproof house have not been taken in the past, and are often performed in the entire ventilation in the soundproof house. This means that the dust is diffused into the soundproof house depending on the direction of the ventilation airflow.

  As described above, in the above-described soundproof house, in addition to the original soundproofing function, it is particularly required that the dust in the excavated soil reforming work area be accurately exhausted to improve the work environment.

  Regarding the dust work as described above, certain laws and regulations are made by the Industrial Safety and Health Act in order to ensure the safety of workers.

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

  The ventilation device of the soundproof house 51 shown in the same figure has, for example, the same height on the front side wall of the house main body 52 which has a large rectangular parallelepiped box shape as a whole with a ceiling, front and rear, left and right side walls. For example, eleven exhaust ducts 54 are arranged in a row, and for example, eleven intake ducts 53 are arranged on the rear side wall at the same height, and the intake ducts 53 and the exhaust ducts 54 are arranged in substantially the same row. .

  The eleven intake ducts 53 provided on the rear side wall are arranged at a lower position of the side wall. Further, the eleven exhaust ducts 54 provided on the front side wall are arranged at a higher position on the side wall.

  In a conventional ventilation device for a soundproof house 51, an intake duct 53 and an exhaust duct 54 are provided in a single direction as a whole ventilation, and a power fan is provided only in the normal exhaust duct 54.

  In the soundproof house 51, the excavated soil reforming work area 61 by mixing the modifying material, the segment seal pasting working area by mixing with an organic solvent (not shown), the equipment for transporting vehicles such as large trucks, and excavated soil carrying out. An entry work area is provided.

  In FIG. 14, reference numeral 55 denotes an electric weight shutter, reference numeral 56 denotes an operator opening / closing door, and in FIG. 15, reference numeral 57 denotes an overhead traveling crane.

  In such a conventional configuration of the ventilation device of the soundproof house 51, measures against ventilation such as dust generated in individual work in the soundproof house 51 are not necessarily sufficient.

  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 against ventilation such as dust are not always sufficient.

JP 2004-204590 A

  The problem to be solved by the present invention is that, in addition to the original soundproofing function, the shield and propulsion that can exhaust the dust in the soundproofing house, especially the excavated soil reforming work area, to improve the work environment. There is no ventilation device or ventilation method in the excavated soil reforming work area in the soundproof house during construction.

  The present invention is a ventilator for an excavated soil reforming work area in a soundproof house for shielding and propulsion work, and the excavated soil reforming work area performs excavated soil reforming work accompanied by dust scattering caused by mixing of the modifier. Yes, for example, at the front and rear side walls facing at least the excavated soil reforming work area in the four-sided side wall and the house body with a ceiling. A plurality of air intake means, exhaust means provided in an arrangement including facing arrangement, and a mist spraying means that is suspended from the ceiling of the excavated soil reforming work area and sprays water mist on dust generated during excavated soil reforming work, Mist from the mist spraying means by the air flow area formed by the intake means and exhaust means provided on the front and rear side walls facing the excavated soil reforming work area in the house body. The most important feature that is configured to force exhaust out of house body while preventing diffusion while containment dust to settle by preparative spraying.

  According to the first aspect of the present invention, the air flow area is formed by the intake means and the exhaust means provided on the front and rear side walls facing the excavated soil reforming work area in the soundproof house, and the mist spraying means Combined with mist spraying, in addition to the original soundproofing function, the dust in the soundproofing house, especially the excavated soil reforming work area, is precisely exhausted while sinking, and the worker's dust exposure is suppressed and the work environment is good. It is possible to realize and provide a ventilation device for the excavated soil reforming work area in the soundproof house in the shield and propulsion work.

  According to the second aspect of the present invention, the intake by the intake means on the front side wall facing the excavated soil reforming work area in the soundproof house, the intake by the intake means on the rear side wall, and the exhaust means on the rear side wall In addition to the original soundproofing function, the airflow area formed by the exhaust and the mist spraying means are used in combination with the original soundproofing function. Therefore, it is possible to realize and provide a shield capable of suppressing the dust exposure of the worker to improve the work environment and a ventilation device for the excavated soil reforming work area in the soundproof house in the propulsion work.

  According to the third aspect of the present invention, the intake by the intake means on the front side wall facing the excavated soil reforming work area in the soundproof house, the intake by the ceiling intake means, and the exhaust by the exhaust means on the rear side wall By forming the air flow area to be formed and using mist spraying from the mist spraying means in combination, in addition to the original soundproofing function, the dust in the excavated soil reforming work area in the soundproofing house is precisely exhausted while sinking. Therefore, it is possible to realize and provide a shield capable of suppressing the dust exposure of the worker and improving the work environment, and a ventilation device for the excavated soil reforming work area in the soundproof house in the propulsion work.

  According to the fourth aspect of the present invention, the ventilator according to the first aspect of the present invention is used to accurately exhaust air while allowing the dust in the excavated soil reforming work area in the soundproof house to settle, in addition to the original soundproofing function. In addition, it is possible to realize and provide a shield that can suppress the dust exposure of the worker and improve the work environment, and a ventilation method of the excavated soil reforming work area in the soundproof house in the propulsion work.

  According to the fifth aspect of the invention, using the ventilator of the second aspect of the invention, in addition to the original soundproofing function, the exhaust air is precisely exhausted while the dust in the soundproofing house, particularly in the excavated soil reforming work area, is settled. In addition, it is possible to realize and provide a shield that can suppress the dust exposure of the worker and improve the work environment, and a ventilation method of the excavated soil reforming work area in the soundproof house in the propulsion work.

  According to the invention of claim 6, claim 7 and claim 8, in addition to the original soundproof function, the ventilation device of the invention of claim 3 is used, particularly in the excavated soil reforming work area in the soundproof house. Realizes and provides a shield that can exhaust the dust accurately while letting the dust settle down, improve the working environment by suppressing dust exposure to the worker, and provide a ventilation method for the excavated soil reforming work area in the soundproof house during propulsion work can do.

FIG. 1 is a schematic plan view showing a ventilation device for the entire soundproof house including a ventilation device for an excavated soil reforming work area according to an embodiment of the present invention with the ceiling removed. FIG. 2 is a schematic plan view showing the ventilation device for the entire soundproof house according to the present embodiment with the ceiling removed. FIG. 3 is a schematic front view of a soundproof house including a ventilation device according to the present embodiment. FIG. 4 is a schematic rear (rear) view of the soundproof house including the ventilation device according to the present embodiment. FIG. 1 is a schematic diagram showing a configuration of a mist generator that constitutes a ventilating device for excavated soil reforming work area according to the present embodiment. FIG. 6 is a schematic block diagram of the control system of the ventilation apparatus according to the present embodiment. FIG. 7 is an explanatory view showing the ventilation flow at the lower position of the side wall in the soundproof house including the ventilation device according to the present embodiment. FIG. 8 is an explanatory view showing the ventilation flow at the middle position of the side wall in the soundproof house including the ventilation device according to the present embodiment. FIG. 9 is an explanatory diagram showing the ventilation flow at the upper position of the side wall in the soundproof house including the ventilation device according to the present embodiment. FIG. 10 is an explanatory diagram showing the ventilation flow in the excavated soil reforming work area in the soundproof house including the ventilation device according to the present embodiment. FIG. 11 is an explanatory view showing the ventilation flow at the upper position of the side wall in the soundproof house including the ventilation device according to the modified example to which the ceiling ventilation fan of this embodiment is added. FIG. 12 is an explanatory view showing the ventilation flow in the excavated soil reforming work area in the soundproof house according to the modified example to which the ceiling ventilation fan of this embodiment is added. FIG. 14 is an explanatory view showing the ventilation flow in the excavated soil reforming work area in the soundproof house according to the modification in which the ceiling ventilation fan of this embodiment is added and the overhead traveling crane is arranged. FIG. 14 is a schematic plan view of a state where a ceiling of a soundproof house including a conventional ventilation device is removed. FIG. 15 is a schematic longitudinal sectional view of a soundproof house including a conventional ventilation device. FIG. 16 is a schematic front view of a soundproof house including a conventional ventilation device. FIG. 17 is a schematic rear (rear) view of a soundproof house including a conventional ventilation device.

  In addition to the original soundproofing function, the present invention accurately exhausts dust especially in the excavated soil reforming work area in the soundproofed house to improve the working environment, and the excavated soil reforming work in the soundproofed house in the propulsion work A ventilation device for excavating soil reforming work area in a soundproof house for shielding and propulsion work, with the purpose of realizing and providing a ventilation device for the area, wherein the excavating soil reforming work area For performing excavation soil reforming work, for example, at least the front side and the rear side walls facing the excavation soil reforming work area in at least the four side walls and the house body with a ceiling, the lower position of the front side wall, Intake means arranged in the middle position, exhaust means provided in the lower position of the rear side wall, intake means provided in the upper position of the rear side wall, and the ceiling of the excavation soil reforming work area A mist spraying means that is suspended in a vertically movable manner and sprays a mist of water on dust generated during excavation soil reforming work, and intake air by an air suction means on the front side wall facing the excavation soil reforming work area, and Contains dust that settles by mist spraying from the mist spraying means that can adjust the spraying distance by vertical movement by the air flow area formed by intake by the suction means on the rear side wall and exhaust by the exhaust means on the rear side wall This was achieved by forcibly exhausting the outside of the house body while preventing diffusion in the state.

  Hereinafter, the ventilation apparatus and ventilation method of the excavated soil reforming work area in the soundproof house in the soundproof house in the propulsion work according to the embodiment of the present invention will be described in detail.

  The ventilator in the excavated soil reforming work area 5 in the soundproof house 1 in the soundproof house 1 in the propulsion work (hereinafter referred to as “the ventilator according to the present embodiment”) according to the present embodiment is, for example, the front, rear, left and right side walls, and the ceiling. 1 is installed in a part of the interior of the house body 2 in the soundproof house 1 shown in FIG. 1 which has a large rectangular parallelepiped box shape and has a soundproof structure. As shown in FIG. Dust generated in the excavated soil reforming work area 5 is forcibly exhausted to the outside of the house body 2.

  Here, first, the overall configuration of the soundproof house 1 will be described with reference to FIGS. 2 to 4. In addition, in FIG. 2, the positional relationship of front and rear, right and left about the said house main body 2 is defined as shown in the same 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, a shield, and a water tank group installation area 8 for supplying water necessary for propulsion work.

  That is, the segment seal pasting work area 3 is at the left rear corner in FIG. 2 of the house body 2, and the equipment and excavated soil loading / unloading work area 4 is at the front side and rear side 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. 2, the mechanical equipment installation area 7 is installed at the right rear corner of the house body 2 in FIG. 2, and the water tank group installation area 8 is installed at the right front corner of the house body 2 in FIG. 2. ing.

  As shown in FIG. 3, 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 transport vehicle located substantially on the ground side. 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. 4 shows a schematic configuration of the back surface (rear surface) of the house body 2.

  Next, the ventilation apparatus for the entire soundproof house 1 will be described in detail. As shown in FIG. 2, the ventilator has at least three side walls of the house 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, for example, a total of 14 intake fans 21 and exhaust fans 31 are arranged in the width direction on the front and rear side walls of the house body 2 in a row.

  That is, for example, nine intake fans 21 and, for example, 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 area 6 and the segment seal pasting work area 3 (the front side and the rear side on the left side of the equipment and excavated soil loading / unloading work area 4 in FIG. 2) For example, five intake fans 21 and exhaust fans 31 are arranged in a row on each side wall.

  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 (this is shown in FIG. 1 with an octagonal frame C: shown 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, for example, three intake fans 21 and, for example, two exhaust fans 31, are arranged in an alternating arrangement 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 shaft ventilation facility region 6 and the segment seal pasting work region 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, for example, three intake fans 21 or exhaust fans 31 are arranged in a row on the front and rear side walls facing each other with the equipment and excavated soil loading / unloading work area 4 interposed therebetween.

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

  On the other hand, on the rear side wall, for example, one intake fan 21 and, for example, 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. The intake fan 21 is arranged at the upper side wall position (C with octagonal frame), and the two exhaust fans 31 are arranged at the lower side wall position (A with 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, for example, three intake fans 21 or exhaust fans 31 are arranged in a row on the front and rear side walls facing each other with the excavated soil reforming work area 5 interposed therebetween.

  Among these, for example, 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, for example, one intake fan 21 with a wind direction cover and for example two exhaust fans 31 are arranged in 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 arranged at the upper side wall position (C with octagonal frame), and two exhaust fans 31 are arranged 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, for example, three intake fans 21 or, for example, 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. is doing.

  Among these, for example, 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, for example, 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. It is arranged at the position (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.

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

  Further, the two intake fans 21 facing the segment seal pasting work area 3 are disposed at the middle side wall position (B with octagonal frame).

  As shown in FIG. 11, a ceiling intake fan 33 as a ceiling intake means is provided on the ceiling of the excavated soil reforming work area 5 by mixing the modifying material in the soundproof house 1. Although not shown, a ceiling intake fan is also provided on the ceiling of the equipment and excavated soil carrying-in / out work area 4.

  Further, on the ceiling of the excavated soil reforming work area 5 due to the mixing of the reforming material, as shown in FIG. The mist generator 45 that is driven to descend is suspended, and the mist generator 45 is configured to spray water mist toward the excavated soil reforming work area 5 as will be described in detail later.

  Next, the control system of the ventilation apparatus according to the present embodiment will be described with reference to FIG.

  The ventilation apparatus according to the present embodiment includes a shield, an input unit 41 including a keyboard, a touch panel, etc. for setting a daytime work mode, a nighttime work mode, and a ceiling ventilation mode in the soundproof house 1 in propulsion work, and ventilation of the soundproof house 1 as a whole. A program memory 42 in which operation programs related to the daytime work mode, nighttime work mode, and ceiling ventilation mode of the apparatus are stored in advance, for example, a total of 32 intake fans 21, exhaust fans 31, ceiling intake fans 33, and each intake fan. 21. Each on / off drive unit 43 that drives each exhaust fan 31 on / off, a display unit 44 that displays various character information, etc., and the mist generator 45 is turned on / off, and the mist addition time, mist The on / off drive unit 47 for adjusting the addition amount and the on / off driving unit 47 based on the operation program corresponding to each mode set in the input unit 41. Driving unit 43, the individually controlled on-off drive unit 47 also has a control unit 40 for vertically moving the mist generator 45 by controlling the elevation driving section 46.

  Next, among the ventilators of the soundproof house 1 in the shield and propulsion work described above, especially the ventilator of the excavated soil reforming work area 5 in the soundproof house 1 according to the present embodiment, and the ventilating method using this ventilator. This will be described in detail.

  For example, during night work in the soundproof house 1, segment sticking work and carrying in segments, carrying out excavated soil, backfilling filling material that fills the gap between the segments and the ground, and other temporary equipment necessary for the construction of shafts Since there is no work, the ventilation amount required for the whole ventilation by the ventilation device of the soundproof house 1 is reduced, and the excavation soil reforming work area 5 is ventilated in the manner shown in FIG. 7 to FIG. 9 and FIG.

  That is, for example, when the operator operates the input unit 41 to set the night work mode, the control unit 40 controls the on / off drive units 43 based on the operation program corresponding to the set night work mode. Individually controlled, the intake fan 21 and the exhaust fan 31 are turned on in the manner shown in FIGS. 7 to 9 and 10, and ventilation of each region including the excavated soil reforming work region 5 in the soundproof house 1 is performed as follows. Run like this.

  Specifically, the ventilation flow (layer A ventilation flow with an octagonal frame) by each intake fan 21 and exhaust fan 31 at the lower side wall position (A with an octagonal frame) in the soundproof house 1 is performed as shown in FIG. Is called.

  That is, as shown in FIG. 7, intake air from two intake fans 21 arranged on the left side wall is supplied in the shaft ventilation facility area 6, and in the equipment and excavated soil carry-in / out work area 4, Exhaust by the exhaust fan 31 provided on the side wall is executed, and in the excavated soil reforming work area 5, intake from the two front intake fans 21 and exhaust by the two rear exhaust fans 31 are 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 an 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 one intake fan 21 disposed on the left side wall, and in the excavated soil reforming work area 5, one intake fan disposed on the front side wall. Inhalation by 21 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 area 6, exhaust is performed by three exhaust fans 31 disposed on the front side wall, and in the excavated soil reforming work area 5, one intake air disposed on the rear side wall. Intake by the fan 21 is executed, and in the mechanical equipment installation area 7, exhaust by the two exhaust fans 31 arranged on the rear side wall is executed.

  FIG. 10 shows the ventilation flow in the excavated soil reforming work area 5 based on the A, B, and C each layer ventilation flow with the octagonal frame shown in FIGS. 7 to 9 described above.

  That is, in the excavated soil reforming work area 5, air is sucked from the intake fan 21 provided at the front side wall lower position (A with octagonal frame) and the middle wall position (B with octagonal frame), and the rear side wall upper position. Intake is also performed from the intake fan 21 provided at (C with octagonal frame), and dust is exhausted by the exhaust fan 31 provided at the rear side wall lower position (A with octagonal frame).

  Further, in the excavated soil reforming work area 5, a mist spraying from the mist generator 45 is used in combination with the above-described exhaust of dust.

More specifically, the agitation and mixing of modifiers (cement-based, lime-based, etc.) in the excavation soil reforming work is classified into a mechanical type and a semi-mechanical type using a backhoe. The water content and the strength after modification (uniaxial compressive strength, cone index) vary, but are generally 30 to 100 kg / m ³ .

  And at the time of agitation and mixing of excavated soil and the modifier, there is a problem that dust is generated and diffuses into the soundproof house 1 depending on the direction of the ventilation airflow line.

  For this reason, in this embodiment, the mist generator 45 suspended from the ceiling of the excavated soil reforming work area 5 in the soundproof house 1 is sprayed with mist obtained by atomizing water (about 10 to 100 μm) to improve the particles. Prevents dust scattering by adhering to and promoting sedimentation.

  In this case, if the amount of mist applied is too large, the moisture content of the excavated soil increases, and the increase in the reforming material and the reforming time become longer, which is not economical. In addition, if the amount of mist applied is small, the dust scattering prevention effect is reduced.

For this reason, about 1 to 2 (L / min) is a suitable value for the amount of mist sprayed, for example, per agitation and mixing place with one backhoe (0.4 m ³ ).

  Furthermore, since the mist is a fine particle of water, the mist generator 45 is lifted or lowered by controlling the elevating drive unit 46 by the control unit 40 because the mist is partly dried and extinguished depending on the spray distance to the excavated soil. The spraying distance with the excavated soil to be modified is adjusted by the temperature, humidity, amount of the modifier added, stirring and mixing method in the soundproof house 1 to optimize the dust scattering prevention effect.

Thereby, for example, in the night work in the excavated soil reforming work area 5, an airflow area for containing dust is formed in the upper part of the soundproof house 1, and the rear side of the reforming material is promoted by promoting the sinking of the reforming material by mist spraying. The dust generated without being diffused by the exhaust fan 31 provided at the lower side wall position (A with the octagonal frame) is exhausted by the shortest air flow line to suppress the dust exposure of the operator.
Moreover, by setting it as the ventilation aspect in the soundproof house 1 mentioned above, the power saving by the reduction of the ventilation function with respect to an unnecessary location and the energy saving by the improvement of ventilation efficiency can be aimed at.

  Next, among the ventilators of the soundproof house 1 in the shield and propulsion work described above, in particular, the ventilator of the excavated soil reforming work area 5 in the soundproof house 1 according to the present embodiment, and the ventilating method using this ventilator. Modification examples will be described with reference to FIGS.

  In this modification, the ventilation flow (A-layer ventilation flow with an octagonal frame) by each intake fan 21 and exhaust fan 31 at the lower side wall position (A with an octagonal frame) in the soundproof house 1, and the middle position of the side wall (with an octagonal frame) B) The ventilation flow (B-layer ventilation flow with octagonal frame) by the respective intake fans 21 and exhaust fans 31 is the same as the case shown in FIGS. 7 and 8 described above, but the side wall upper position (C with octagonal frame) 9), the ventilation flow (C-layer ventilation flow with an octagonal frame) by the respective intake fans 21 and exhaust fans 31 is changed from that shown in FIG. 9, and the ceiling of the excavated soil reforming work area 5 is changed to a ceiling as shown in FIG. A feature is that an intake fan 33 (represented by D with an octagonal frame) is provided.

  In this case, the C-layer with octagonal frame and the D-layer ventilation flow with octagonal frame are exhausted by the three exhaust fans 31 arranged on the front side wall in the vertical ventilation facility region 6 as shown in FIG. In the excavated soil reforming work area 5, the intake by the ceiling intake fan 33 disposed on the ceiling is executed, and in the mechanical equipment installation area 7, the exhaust by the two exhaust fans 31 disposed on the rear side wall is performed. Executed.

  FIG. 12 shows each of the above-described layer ventilation flows in the excavated soil reforming work area 5, and intake air provided at the front side wall lower position (A with an octagonal frame) and the side wall middle position (with an octagonal frame B). Intake from the fan 21 and further from the ceiling intake fan 33 (with octagonal frame D) provided on the ceiling, and exhausted by the two exhaust fans 31 provided at the lower side wall side position (A with octagonal frame). To do.

  In this case as well, the mist generated from the mist generator 45 suspended from the ceiling of the soundproof house 1 is sprayed with mist that has been made into fine particles (about 10 to 100 μm) by using spraying together to promote the settling. Prevent dust scattering.

  Also in the case of the modification shown in FIGS. 11 and 12, for example, in the night work in the excavated soil reforming work area 5, an airflow area for containing dust is formed on the upper part of the excavated soil reforming work area 5, and Dust bombardment of workers by exhausting dust generated without diffusing by the exhaust fan 31 provided at the lower position of the rear side wall (A with octagonal frame) while promoting the settling of the reforming material by spraying mist. Can be suppressed.

Moreover, by setting it as the ventilation aspect in the soundproof house 1 mentioned above, the power saving by the reduction of the ventilation function with respect to an unnecessary location and the energy saving by the improvement of ventilation efficiency can be aimed at.
Furthermore, by adopting the ceiling intake fan 33, it is possible to optimize the internal ventilation amount according to the position and size of the excavated soil reforming work area 5.

  FIG. 13 shows each layer ventilation flow in the case where an overhead traveling crane 48 is provided near the ceiling of the excavated soil reforming work area 5, and is the same as that shown in FIG. The overhead traveling crane 48 is arranged in the vicinity of the ceiling of the excavated soil reforming work area 5 by controlling the elevating drive unit 46 to raise or lower the mist generator 45 so as not to collide with the overhead traveling crane 48 and to temporarily retreat. It is possible to cope with the soundproof house 1 accurately.

  According to the present embodiment described above, especially in the excavated soil reforming work area 5 in the soundproof house 1, the air current areas formed by the intake fans 21 and the exhaust fans 31, and the mist distribution by the mist generator 45. In combination with this, it is possible to realize and provide a ventilating device for the excavated soil reforming work area 5 that can accelerate the sedimentation of the dust and exhaust the dust with the shortest air flow line without diffusing, and can suppress the dust exposure of the operator. .

Further, the dust can be effectively prevented from diffusing by adjusting the scattering distance with respect to the modified soil by raising or lowering the mist generator 45 and adjusting the amount of mist added.
Furthermore, the scattering distance, particle size, and amount of mist spraying can be automatically controlled by measuring the temperature, humidity, etc. of the excavated soil reforming work area.

Furthermore, by promoting the sedimentation of the dust by using the mist together, the ventilation amount in the excavated soil reforming work area 5 can be reduced, and power saving and energy saving can be achieved.
Furthermore, the mist spraying also reduces the temperature of the reforming work area in summer and improves the working environment.

  The ventilation device and ventilation method of the present invention are not only applied to the above-mentioned shield and soundproof house in propulsion work, but also various types accompanied by generation of dust that modifies debris, rocks, minerals, etc. using a modifier. It can be widely applied for ventilation of soundproof structures in the work place.

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 21 Intake fan 31 Exhaust fan 33 Ceiling intake fan 40 Control unit 41 Input unit 42 Program memory 43 On-off drive unit 44 Display unit 45 Mist generator 46 Lift drive unit 47 On-off drive unit 48 Overhead traveling crane

Claims (8)

A ventilation device for excavating soil reforming work area in soundproof house in shield and propulsion work,
The excavated soil reforming work area is for performing excavated soil reforming work with dust scattering due to mixing of the reforming material,
4 side walls, and at least the front and rear side walls facing the excavated soil reforming work area in the house body with a ceiling, including a plurality of upper and lower stages, a plurality of rows in the side wall width direction, and the same stage and the same row opposite arrangement. A plurality of intake means, exhaust means provided in the arrangement;
Mist spraying means that is suspended from the ceiling of the excavated soil reforming work area and sprays water mist on dust generated during excavated soil reforming work;
Have
Dust that settles down by mist spraying from the mist spraying means is diffused in a confined state by the air flow area formed by the air intake means and exhaust means provided on the front and rear side walls facing the excavated soil reforming work area in the house body. A ventilating device for excavating soil reforming work area in a soundproof house in propulsion work, characterized by being configured to forcibly exhaust outside the house body while preventing the above. A ventilation device for excavating soil reforming work area in soundproof house in shield and propulsion work,
The excavated soil reforming work area is for performing excavated soil reforming work accompanied by dust scattering due to mixing of the modifying material,
4 side walls, and at least the front and rear side walls facing the excavated soil reforming work area in the house body with a ceiling, including a plurality of upper and lower stages, a plurality of rows in the side wall width direction, and the same stage and the same row opposite arrangement. A plurality of intake means, exhaust means provided in the arrangement;
Mist spraying means that is suspended from the ceiling of the excavated soil reforming work area so as to be movable up and down, and sprays water mist on dust generated during excavated soil reforming work,
Have
Scattered by vertical movement by an airflow area formed by intake air by the intake means on the front side wall facing the excavated soil reforming work area, intake air by the intake means on the rear side wall, and exhaust air by the exhaust means on the rear side wall A shield that is configured to forcibly exhaust dust outside of the house body while preventing the dust that settles by mist spraying from the mist spraying means that can adjust the distance from being contained in a contained state, in the soundproof house in the propulsion work Ventilator for excavated soil reforming work area. A ventilation device for excavating soil reforming work area in soundproof house in shield and propulsion work,
The excavated soil reforming work area is for performing excavated soil reforming work with dust scattering due to mixing of the reforming material,
4 side walls, and at least the front and rear side walls facing the excavated soil reforming work area in the house body with a ceiling, including a plurality of upper and lower stages, a plurality of rows in the side wall width direction, and the same stage and the same row opposite arrangement. A plurality of intake means, exhaust means provided in the arrangement;
Mist spraying means that is suspended from the ceiling of the excavated soil reforming work area and sprays water mist on dust generated during excavated soil reforming work;
Ceiling intake means arranged on the ceiling of the excavated soil reforming work area;
Have
Dust that settles down by mist spraying from the mist spraying means is diffused in a confined state by the air flow area formed by the air intake means and exhaust means provided on the front and rear side walls facing the excavated soil reforming work area in the house body. A ventilating device for excavating soil reforming work area in a soundproof house in propulsion work, characterized by being configured to forcibly exhaust outside the house body while preventing the above. A ventilation device for excavating soil reforming work area in soundproof house in shield and propulsion work,
The excavated soil reforming work area is for performing excavated soil reforming work with dust scattering due to mixing of the reforming material,
4 side walls, and at least the front and rear side walls facing the excavated soil reforming work area in the house body with a ceiling, including a plurality of upper and lower stages, a plurality of rows in the side wall width direction, and the same stage and the same row opposite arrangement. A plurality of intake means, exhaust means provided in the arrangement;
Mist spraying means that is suspended from the ceiling of the excavated soil reforming work area so as to be movable up and down, and sprays water mist on dust generated during excavated soil reforming work,
Ceiling intake means arranged on the ceiling of the excavated soil reforming work area;
Have
Scattering distance is adjusted by vertical movement according to the airflow area formed by the intake by the intake means on the front side wall facing the excavated soil reforming work area, the intake by the ceiling intake means and the exhaust by the exhaust means on the rear side wall Dust that settles by mist spraying from possible mist spraying means is forcibly exhausted outside the house body while preventing diffusion in a contained state,
A ventilation device for excavating soil reforming work area in a soundproof house in a shield and propulsion work, characterized in that dust generated by mixing of a reforming material is settled by mist spraying from the mist spraying means. It is a ventilation method for excavating soil reforming work area in soundproof house in shield and propulsion work,
The excavated soil reforming work area is for performing excavated soil reforming work with dust scattering due to mixing of the reforming material,
4 side walls, and at least the front and rear side walls facing the excavated soil reforming work area in the house body with a ceiling, including a plurality of upper and lower stages, a plurality of rows in the side wall width direction, and the same stage and the same row opposite arrangement. A process of intake and exhaust with a plurality of intake means, exhaust means provided in the arrangement;
From the mist spraying means that is suspended from the ceiling of the excavated soil reforming work area and sprays the mist of water to the dust generated during the excavated soil reforming work,
The ventilation method of the excavation soil reforming work area in the soundproof house in the shield and propulsion work characterized by the simultaneous progress of It is a ventilation method for excavating soil reforming work area in soundproof house in shield and propulsion work,
The excavated soil reforming work area is for performing excavated soil reforming work with dust scattering due to mixing of the reforming material,
4 side walls, and at least the front and rear side walls facing the excavated soil reforming work area in the house body with a ceiling, including a plurality of upper and lower stages, a plurality of rows in the side wall width direction, and the same stage and the same row opposite arrangement. A process of intake and exhaust with a plurality of intake means, exhaust means provided in the arrangement;
A mist spraying process in which the mist is disposed so as to be vertically movable from the ceiling of the excavated soil reforming work area, and a mist is sprayed on the dust generated during the excavated soil reforming work,
A process of sinking dust caused by mixing of the reforming material by mist spraying from a mist spraying means that is suspended from the ceiling of the excavated soil reforming work area and can be moved up and down and the spraying distance is adjustable;
The ventilation method of the excavation soil reforming work area in the soundproof house in the shield and propulsion work characterized by the simultaneous progress of It is a ventilation method for excavating soil reforming work area in soundproof house in shield and propulsion work,
The excavated soil reforming work area is for performing excavated soil reforming work with dust scattering due to mixing of the reforming material,
4 side walls, and at least the front and rear side walls facing the excavated soil reforming work area in the house body with a ceiling, including a plurality of upper and lower stages, a plurality of rows in the side wall width direction, and the same stage and the same row opposite arrangement. A plurality of intake means, exhaust means provided in the arrangement;
Mist spraying means that is suspended from the ceiling of the excavated soil reforming work area so as to be movable up and down, and sprays water mist on dust generated during excavated soil reforming work,
Ceiling intake means arranged on the ceiling of the excavated soil reforming work area;
Have
Dust that settles down by mist spraying from the mist spraying means is diffused in a confined state by the air flow area formed by the air intake means and exhaust means provided on the front and rear side walls facing the excavated soil reforming work area in the house body. A ventilation method for excavating soil reforming work area in a soundproof house in propulsion work, which is configured to forcibly exhaust the outside of the house body while preventing water. It is a ventilation method for excavating soil reforming work area in soundproof house in shield and propulsion work,
The excavated soil reforming work area is for performing excavated soil reforming work with dust scattering due to mixing of the reforming material,
4 side walls, and at least the front and rear side walls facing the excavated soil reforming work area in the house body with a ceiling, including a plurality of upper and lower stages, a plurality of rows in the side wall width direction, and the same stage and the same row opposite arrangement. A process of intake and exhaust with a plurality of intake means, exhaust means provided in the arrangement;
A mist spraying process in which the mist is disposed so as to be vertically movable from the ceiling of the excavated soil reforming work area, and a mist is sprayed on the dust generated during the excavated soil reforming work,
Ceiling intake process arranged on the ceiling of the excavated soil reforming work area;
Have
Scattering distance is adjusted by vertical movement according to the airflow area formed by the intake by the intake means on the front side wall facing the excavated soil reforming work area, the intake by the ceiling intake means and the exhaust by the exhaust means on the rear side wall Dust that settles due to mist spraying from possible mist spraying means is forcibly exhausted out of the house body while preventing diffusion in a confined state, and dust generated due to mixing of reformer is settled by mist spraying from the mist spraying means Ventilation method for excavated soil reforming work area in soundproof house for shield and propulsion work.

Images