JP2009256929A - Method of ventilating tunnel during excavation and ventilation system - Google Patents

Method of ventilating tunnel during excavation and ventilation system Download PDF

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JP2009256929A
JP2009256929A JP2008105535A JP2008105535A JP2009256929A JP 2009256929 A JP2009256929 A JP 2009256929A JP 2008105535 A JP2008105535 A JP 2008105535A JP 2008105535 A JP2008105535 A JP 2008105535A JP 2009256929 A JP2009256929 A JP 2009256929A
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dust collector
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JP5101376B2 (en
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Chiharu Kakihara
智春 柿原
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Maeda Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a method of ventilating a tunnel during the excavation and a ventilation system capable of reducing the operation costs of a blower and a dust collector by controlling the operations of the blower and the dust collector according to the contents of operations, particularly, near a facing in the tunnel. <P>SOLUTION: This tunnel ventilation system 10 used during the excavation includes the blower 13 having a blowing duct 14 extending toward the facing 12 and the dust collector 16 installed near the facing 12 and collecting dust generated from the facing. A controller 19 is electrically connected to the blower 13 and the dust collector 16. The controller 19 receives a signal from a dust concentration measuring sensor 20 to control the operations of the blower 13 and the dust collector 16. The controller 19 determines to which of a low concentration zone, an intermediate concentration zone, or a high concentration zone which are set beforehand an actual dust concentration value near the facing 12 belongs, selects the operating conditions of the blower 13 and the dust collector 16 according to the concentration zone, and controls the operation of the system under the conditions. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、掘削施工中のトンネル換気方法及び換気システムに関し、更に詳細には、掘削施工中のトンネル内を換気するために設置された送風機と集塵機とを粉塵濃度に応じて連動運転させる掘削施工中のトンネル換気方法及び換気システムに関する。   The present invention relates to a tunnel ventilation method and a ventilation system during excavation work, and more particularly, excavation work in which a blower installed to ventilate a tunnel during excavation work and a dust collector are operated in conjunction according to the dust concentration. The present invention relates to a tunnel ventilation method and a ventilation system.

掘削施工中のトンネル内では、大量の粉塵が発生することがあり、そのようなときトンネル内の空気は汚染され、作業者の健康にも大きな影響を与える。そのため、従来では、特許文献１及び特許文献２に開示されているようなトンネル換気システムが設置され、掘削施工中のトンネル内を換気して新鮮な空気を外部から取り込むようにしている。   A large amount of dust may be generated in the tunnel during excavation work, and in such a case, the air in the tunnel is contaminated, which greatly affects the health of workers. Therefore, conventionally, a tunnel ventilation system as disclosed in Patent Literature 1 and Patent Literature 2 is installed, and the inside of the tunnel under excavation work is ventilated to take in fresh air from the outside.

特許文献１に開示された発明の換気風量制御方法は、切羽から離れた確実に換気すべきエリアの後方に粉塵濃度センサを設置し、制御装置が、換気用風管の直径やトンネル掘削長に対応する長さ及び材質を計測して風管の圧力損失を算出し、この算出結果に基づいて、粉塵濃度センサの検出した粉塵濃度を所定値まで低下させるように送風機の運転をインバータ制御するものである。   In the ventilation air volume control method of the invention disclosed in Patent Document 1, a dust concentration sensor is installed behind an area that should be reliably ventilated away from the face, and the control device controls the diameter of the ventilation wind pipe and the tunnel excavation length. Measuring the corresponding length and material to calculate the pressure loss of the wind pipe, and based on this calculation result, inverter operation is controlled to reduce the dust concentration detected by the dust concentration sensor to a predetermined value It is.

また、特許文献２に開示された発明の施工中トンネル内の換気方法は、第１送風機によって坑外の新鮮な空気を風管から切羽に向かって送気する一方、切羽で発生した粉塵やヒュームを集塵機で捕集し、この集塵機で浄化した空気の一部をエアーカーテン帯域内に送り、その一部と風管から送気された坑外の新鮮な空気とを第２送風機で切羽に送気して切羽で発生する粉塵やヒュームを希釈するようにしたものである。具体的には、この特許文献２には、集塵機と２台の送風機とを用い、切羽から発生する粉塵やヒュームを希釈させるために、第１送風機により坑外から送気される新鮮な空気量Ｑ１と、集塵機で浄化され切羽に送気される一部の浄化空気量Ｑ３との総量（Ｑ１＋Ｑ３）が第２送風機の総風量Ｑ２より低くなるように調整することにより、トンネル換気に要する設備費や運転コストを低減させながら切羽から坑口に至る全トンネル内の空気を清浄化しようとするものである。
特開平８−１２１０９９号公報 特開２００２−２２１０００号公報 Moreover, the ventilation method in the tunnel under construction of the invention disclosed in Patent Document 2 is that the fresh air outside the mine is sent from the wind pipe toward the face by the first blower, while the dust and fume generated at the face Is collected by a dust collector, a part of the air purified by this dust collector is sent into the air curtain zone, and a part of the air and fresh fresh air sent from the wind pipe are sent to the face by the second blower. It is intended to dilute the dust and fumes generated at the face. Specifically, this Patent Document 2 uses a dust collector and two blowers, and in order to dilute dust and fume generated from the face, the amount of fresh air sent from the outside of the mine by the first blower Equipment cost required for tunnel ventilation by adjusting the total amount (Q1 + Q3) of Q1 and the amount of purified air Q3 that is purified by the dust collector and sent to the face to be lower than the total air volume Q2 of the second blower It is intended to clean the air in all tunnels from the face to the wellhead while reducing operating costs.
JP-A-8-121099 JP 2002-221000 A

しかし、特許文献１に開示された発明は、集塵機を備えるものではなく、単に、坑外の新鮮な空気を切羽に向かって送気する送風機の運転コストを下げるために粉塵センサが計測した粉塵濃度を見ながら送風機の運転をインバータ制御するものであり、集塵機と送風機とを連動させて運転した場合の運転コストを低減させるものではなかった。また、特許文献２に開示された発明では、集塵機と送風機とを連動して運転するものではあるが、第１送風機による風量を高めれば、集塵機の能力も、また第２送風機の風量も高める必要があり、この発明によっては、これらの運転コストを低減できるものではなかった。   However, the invention disclosed in Patent Document 1 does not include a dust collector, but simply measures the dust concentration measured by the dust sensor in order to reduce the operating cost of the blower that sends fresh air outside the well toward the face. The operation of the blower is controlled by inverter while watching the operation, and the operation cost when the dust collector and the blower are operated in conjunction with each other is not reduced. Further, in the invention disclosed in Patent Document 2, the dust collector and the blower are operated in conjunction with each other. However, if the air volume by the first blower is increased, the capacity of the dust collector and the air volume of the second fan need to be increased. According to the present invention, these operating costs cannot be reduced.

一般的に、掘削施工中のトンネル内における換気は、切羽の掘削や発破などの作業時に発生する粉塵を浄化するだけではなく、例えば、トンネル内が夏場では３０度以上の高温になることから、粉塵の発生量に拘わらず暑さ対策として送風機の風量を上げ、坑外の新鮮な空気を大量にトンネル内に送り込み、これにより坑内を冷却していることも事実である。そのような場合、従来では、坑内の換気のバランスを確保するために集塵機の風量も上がっていた。その結果、送風機及び集塵機の両方が最大出力で稼働することが多いことからそれらの運転に要する電気代などのコストが大幅に増え、これが工事費用を高騰させる一因ともなっている。   In general, ventilation in a tunnel during excavation not only purifies dust generated during work such as excavation and blasting of the face, but for example, because the temperature inside the tunnel is 30 degrees or higher in summer, Regardless of the amount of dust generated, it is also true that the air flow of the blower is increased as a countermeasure against heat, and a large amount of fresh air outside the mine is sent into the tunnel, thereby cooling the mine. In such a case, conventionally, in order to ensure the balance of ventilation in the mine, the air volume of the dust collector has also increased. As a result, since both the blower and the dust collector are often operated at the maximum output, the cost of electricity required for their operation is greatly increased, which is one factor that increases the construction cost.

本発明の目的は、かかる従来の問題点を解決するためになされたもので、トンネル内、特に切羽付近での作業内容に応じて送風機と集塵機の運転を制御することにより、これら送風機と集塵機の運転コストを低減させることが可能な掘削施工中のトンネル換気方法及び換気システムを提供することにある。   An object of the present invention is to solve such conventional problems, and by controlling the operation of the blower and the dust collector in accordance with the work contents in the tunnel, particularly in the vicinity of the face, the blower and the dust collector are controlled. It is an object of the present invention to provide a tunnel ventilation method and a ventilation system during excavation that can reduce operation costs.

本発明は、掘削施工中の前記トンネルの切羽へ向かって延びる送風ダクトを介して新鮮な空気を前記切羽に送気する送風機と、前記切羽の近くに設置され、該切羽及びその付近で発生する粉塵を捕集して浄化する集塵機との運転を制御装置により制御して掘削施工中のトンネル内を換気するトンネル換気方法であり、その特徴とするところは、前記トンネルの前記切羽に近い箇所に設置された粉塵濃度検出手段からの粉塵濃度実測値を前記制御装置に供給すること、前記粉塵濃度実測値が供給された前記制御装置における制御部が、前記制御装置の記憶装置に予め格納されている複数の設定粉塵濃度域のうちのいずれに属するかを判定し、これら設定粉塵濃度域に応じて、前記記憶装置に予め格納されている前記送風機及び前記集塵機の運転条件を選択して前記送風機及び前記集塵機の運転を制御することにある。   The present invention is a fan that sends fresh air to the face through a blow duct that extends toward the face of the tunnel during excavation, and is installed near the face and is generated near the face. It is a tunnel ventilation method that controls the operation with a dust collector that collects and purifies dust with a control device and ventilates the inside of the tunnel during excavation work, and its feature is in a location near the face of the tunnel Supplying the measured dust concentration value from the installed dust concentration detecting means to the control device, and the control unit in the control device supplied with the measured dust concentration value is stored in advance in the storage device of the control device. Of the plurality of set dust concentration areas, and the operation of the blower and the dust collector stored in advance in the storage device according to the set dust concentration areas Select matter is to control the operation of the blower and the dust collector.

本発明に係る掘削施工中のトンネル換気方法における一実施形態としては、前記粉塵濃度検出手段で計測された前記粉塵濃度実測値が、複数の前記設定粉塵濃度域のうち最も低い前記設定粉塵濃度域に属するとき、前記制御装置における前記制御部が、前記送風機による送風量を高くすると共に前記集塵機による吸引空気量を低下させ、前記粉塵濃度検出手段で計測された前記粉塵濃度実測値が複数の前記設定粉塵濃度域のうち最も高い前記粉塵濃度域に属するとき、前記制御装置における前記制御部が、前記送風機による送風量を低くすると共に前記集塵機による吸引空気量を高めることにある。   As one embodiment in the tunnel ventilation method during excavation construction according to the present invention, the measured dust concentration measured by the dust concentration detection means is the lowest set dust concentration region among the plurality of set dust concentration regions The control unit in the control device increases the amount of air blown by the blower and reduces the amount of air sucked by the dust collector, and the dust concentration actual measurement values measured by the dust concentration detecting means are a plurality of the measured values. When belonging to the highest dust concentration range among the set dust concentration regions, the control unit in the control device is to reduce the amount of air blown by the blower and increase the amount of air sucked by the dust collector.

本発明に係る掘削施工中のトンネル換気方法における他の実施形態としては、複数の前記設定粉塵濃度域が、低濃度域と、中濃度域と、高濃度域の三段階に区分されて前記記憶装置に格納され、前記粉塵濃度検出手段で計測された前記粉塵濃度実測値が前記中濃度域に属すると前記制御装置の前記制御部が判定したとき、前記送風機による送風量と前記集塵機による吸引空気量とをほぼ同じに調整するように運転制御をすることにある。   In another embodiment of the tunnel ventilation method during excavation work according to the present invention, the plurality of set dust concentration ranges are divided into three stages of a low concentration region, a medium concentration region, and a high concentration region, and the memory is stored. When the control unit of the control device determines that the measured dust concentration value stored in the apparatus and measured by the dust concentration detection means belongs to the medium concentration range, the amount of air blown by the blower and the suction air by the dust collector Operation control is performed so that the amount is adjusted to be substantially the same.

また、本発明は、掘削施工中のトンネル内を換気するトンネル換気システムであり、その特徴とするところは、掘削施工中の前記トンネルの切羽へ向かって延びる送風ダクトを介して新鮮な空気を前記切羽に送気する送風機と、前記切羽の近くに設置され、前記切羽及びその付近で発生する粉塵を捕集して浄化する集塵機と、前記切羽の近くに設置された粉塵濃度検出手段と、前記送風機、前記集塵機、及び前記粉塵濃度検出手段に電気的に接続され、前記粉塵濃度検出手段からの信号を受けて前記送風機及び前記集塵機の運転を制御する制御装置とから構成され、前記制御装置が、予め設定された複数の設定粉塵濃度域と、これら複数の前記設定粉塵濃度域に応じた前記送風機及び前記集塵機の運転条件を記憶した記憶装置と、前記粉塵濃度検出手段から供給される粉塵濃度実測値が前記記憶装置に記憶されている複数の前記設定粉塵濃度域のうちのいずれに属するかを判定し、前記設定粉塵濃度域に対応した前記送風機及び前記集塵機の運転条件を選択して前記送風機及び前記集塵機の運転を制御する制御部とを備えていることである。   Further, the present invention is a tunnel ventilation system for ventilating the inside of a tunnel under excavation construction, and the feature thereof is that fresh air is passed through a blower duct extending toward the face of the tunnel under excavation construction. A blower for supplying air to the face, a dust collector installed near the face, for collecting and purifying the dust generated near the face and the dust, a dust concentration detecting means installed near the face, and A control device that is electrically connected to the blower, the dust collector, and the dust concentration detection means, and that controls the operation of the blower and the dust collector in response to a signal from the dust concentration detection means; A plurality of preset dust concentration ranges, a storage device storing operating conditions of the blower and the dust collector according to the plurality of set dust concentration ranges, and the dust concentration The blower and the dust collector corresponding to the set dust concentration range are determined by determining which of the plurality of set dust concentration ranges stored in the storage device the actual measured dust concentration supplied from the detection means And a control unit that controls the operation of the blower and the dust collector by selecting the operating conditions.

本発明に係る掘削施工中のトンネル換気システムにおける一実施形態としては、前記制御装置の前記制御部は、前記粉塵濃度検出手段で計測された粉塵濃度実測値が、複数の前記設定粉塵濃度域のうち最も低い濃度域に属するときには前記送風機による送風量を高くすると共に前記集塵機による吸引空気量を低下させ、前記粉塵濃度検出手段で計測された前記粉塵濃度実測値が複数の前記設定粉塵濃度域のうち最も高い濃度域に属するときには前記送風機による送風量を低くすると共に前記集塵機による吸引空気量を高めることである。   As one embodiment in the tunnel ventilation system during excavation work according to the present invention, the control unit of the control device, the measured dust concentration measured by the dust concentration detection means is a plurality of the set dust concentration range Among them, when it belongs to the lowest concentration range, the amount of air blown by the blower is increased and the amount of air sucked by the dust collector is decreased, and the measured dust concentration value measured by the dust concentration detection means is a plurality of the set dust concentration regions. Among them, when belonging to the highest concentration range, the amount of air blown by the blower is lowered and the amount of air sucked by the dust collector is increased.

本発明に係る掘削施工中のトンネル換気システムにおける他の実施形態としては、複数の前記設定粉塵濃度域が、低濃度域と、中濃度域と、高濃度域の三段階に区分されて前記制御装置の前記記憶装置に記憶され、前記粉塵濃度検出手段で計測された前記粉塵濃度実測値が前記中低濃度域に属するとき、前記制御装置の前記制御部が、前記送風機による送風量と前記集塵機による吸引空気量とをほぼ同じに調整すべく運転を制御することである。   As another embodiment of the tunnel ventilation system during excavation work according to the present invention, the control is performed by dividing a plurality of the set dust concentration regions into three stages of a low concentration region, a medium concentration region, and a high concentration region. When the measured dust concentration value stored in the storage device of the apparatus and measured by the dust concentration detection means belongs to the medium to low concentration range, the control unit of the control device controls the amount of air blown by the blower and the dust collector. Is to control the operation so as to adjust the suction air amount by the same.

本発明に係る掘削施工中のトンネル換気方法及び換気システムによれば、トンネル内の切羽に向かって新鮮な空気を送風する送風機と切羽付近の粉塵を捕集する集塵機とは、粉塵濃度検出手段から供給される粉塵濃度実測値が、制御装置の記憶装置に予め格納された複数の設定粉塵濃度域のいずれの範囲に属するかを判定し、その判定結果に基づいて制御装置の記憶装置に予め記憶された送風機と集塵機の運転条件を選択して運転される。これにより、トンネル内での作業内容に応じて送風機と集塵機との運転をそれぞれ適正にコントロールすることができると共に、これら送風機と集塵機との運転コストを従来に比べて低減することができる。   According to the tunnel ventilation method and ventilation system during excavation work according to the present invention, the blower that blows fresh air toward the face in the tunnel and the dust collector that collects dust near the face are from the dust concentration detection means. It is determined whether the supplied dust concentration actual measurement value belongs to a range of a plurality of set dust concentration ranges stored in advance in the storage device of the control device, and stored in advance in the storage device of the control device based on the determination result It is operated by selecting the operating conditions of the blower and the dust collector. Thereby, while being able to control operation of a fan and a dust collector appropriately according to the contents of work in a tunnel, the operation cost of these fans and a dust collector can be reduced compared with the former, respectively.

具体的には、粉塵濃度検出手段で計測された粉塵濃度実測値が、制御装置の記憶装置に格納された複数の設定粉塵濃度域のうち最も低い濃度域に属するときには送風機による送風量を高くすると共に集塵機による吸引空気量を低下させ、また粉塵濃度検出手段で計測された粉塵濃度実測値が複数の設定粉塵濃度域のうち最も高い濃度域に属するときには送風機による送風量を低くするように制御装置の制御部が送風機と集塵機との運転を制御するので、粉塵濃度実測値がそれほど大きくないときでも送風機の送風量を多くし、他方、集塵機の運転出力を低くできるので、トンネル内を経済的に冷却することができ、その結果、従来のトンネル内換気方法に比べて、トンネル内の冷却効果を得ながらこれら送風機と集塵機との運転に掛かるコストを大幅に低減することができる。かかるトンネル換気システムにおける運転コストの低減化は、制御装置の記憶装置に予め格納された複数の設定粉塵濃度域を、低濃度域と、中濃度域と、高濃度域の三段階に区分すれば、なお一層の効果を得ることができる。   Specifically, when the measured dust concentration value measured by the dust concentration detection means belongs to the lowest concentration range among the plurality of set dust concentration regions stored in the storage device of the control device, the air flow rate by the blower is increased. In addition, the controller reduces the amount of air sucked by the dust collector and lowers the amount of air blown by the blower when the measured dust concentration measured by the dust concentration detection means belongs to the highest concentration range among a plurality of set dust concentration ranges. The controller controls the operation of the blower and the dust collector, so even when the measured dust concentration is not so large, the blower volume can be increased, while the operation output of the dust collector can be lowered, so the inside of the tunnel is economical. As a result, compared with conventional ventilation methods in tunnels, the cost of operating these blowers and dust collectors while obtaining a cooling effect in the tunnels can be obtained. It can be greatly reduced. In order to reduce the operation cost in such a tunnel ventilation system, a plurality of set dust concentration ranges stored in advance in the storage device of the control device can be divided into three levels: a low concentration range, a medium concentration range, and a high concentration range. Further effects can be obtained.

以下、本発明に係る掘削施工中のトンネル換気方法及び換気システムを図に示される好適な実施の形態について更に詳細に説明する。図１は、この発明の一実施形態に係る掘削施工中のトンネル換気システム（以下、トンネル換気システムと称する）１０を示すトンネル内の切羽付近における概略的な構成説明図である。このトンネル換気システム１０は、掘削施工中のトンネル１１における切羽１２へ向かって坑外の新鮮な空気を送気する送風機１３を備えている。掘削施工中のトンネル１１には、坑口（図示せず）から切羽１２に向かって延びる送風ダクト１４が設置され、送風機１３は、セントル１５より坑口側において送風ダクト１４の途中に設置されている。この実施形態では、直径１，４００ｍｍの送風ダクト１４が使用されている。   Hereinafter, a tunnel ventilation method and a ventilation system during excavation work according to the present invention will be described in more detail with respect to preferred embodiments shown in the drawings. FIG. 1 is a schematic configuration explanatory view in the vicinity of a face in a tunnel showing a tunnel ventilation system (hereinafter referred to as a tunnel ventilation system) 10 during excavation work according to an embodiment of the present invention. The tunnel ventilation system 10 includes a blower 13 that supplies fresh air outside the mine toward a face 12 in a tunnel 11 under excavation work. In the tunnel 11 under excavation construction, a blower duct 14 extending from a wellhead (not shown) toward the face 12 is installed, and the blower 13 is placed in the middle of the blower duct 14 on the wellhead side from the center 15. In this embodiment, an air duct 14 having a diameter of 1,400 mm is used.

切羽１２から所定距離だけ離れたトンネル内１１には集塵機１６が設置され、この集塵機１６からは吸引ダクト１７が切羽１２に向かって延びている。吸引ダクト１７の吸引口１７ａは、切羽１２から発生する粉塵１８が漂う切羽１２に近い付近の領域に位置決めされている。集塵機１６は、切羽１２で発生した粉塵１８を吸引ダクト１７によって吸い込み、内部のフィルタで粒子状汚染物質などを捕集して清浄化した後、浄化された空気を集塵機１６の坑口側に設けた排出口１６ａから排出する。送風機１３と集塵機１６との運転は、これらに電気的に接続された制御装置１９により制御される。制御装置１９は、送風機１３又は集塵機１６のいずれかの近くに設置されていてもよいが、後述する粉塵濃度計測センサ２０とも電気的に接続されるので、集塵機１６を設置する架台などに取り付けることが好ましい。   A dust collector 16 is installed in the tunnel 11 separated from the face 12 by a predetermined distance, and a suction duct 17 extends from the dust collector 16 toward the face 12. The suction port 17a of the suction duct 17 is positioned in a region near the face 12 where dust 18 generated from the face 12 drifts. The dust collector 16 sucks the dust 18 generated at the face 12 through the suction duct 17, collects particulate contaminants and the like with an internal filter and cleans it, and then provides purified air on the well opening side of the dust collector 16. It discharges from the discharge port 16a. The operation of the blower 13 and the dust collector 16 is controlled by a control device 19 electrically connected thereto. The control device 19 may be installed in the vicinity of either the blower 13 or the dust collector 16 but is also electrically connected to a dust concentration measurement sensor 20 to be described later, so it is attached to a gantry or the like on which the dust collector 16 is installed. Is preferred.

粉塵濃度検出手段である粉塵濃度計測センサ２０は、集塵機１６から延びる吸引ダクト１７の先端である吸引口１７ａに取り付けられるか、その付近の適当な固定部に設置されている。前述したようにこの粉塵濃度計測センサ２０は、制御装置１９に電気的に接続され、この粉塵濃度計測センサ２０からの出力信号は、常時、制御装置１９に入力されている。制御装置１９は、記憶装置と制御部とを含み、この記憶装置には、複数の粉塵濃度値が格納され、これらの粉塵濃度値によって予め設定された複数の設定粉塵濃度域が区分されている。また、制御装置１９に記憶装置には、これら複数の設定粉塵濃度域に応じた送風機１３と集塵機１６との運転条件が格納されている。   The dust concentration measuring sensor 20 which is a dust concentration detecting means is attached to a suction port 17a which is the tip of a suction duct 17 extending from the dust collector 16, or is installed at an appropriate fixing part in the vicinity thereof. As described above, the dust concentration measurement sensor 20 is electrically connected to the control device 19, and an output signal from the dust concentration measurement sensor 20 is always input to the control device 19. The control device 19 includes a storage device and a control unit, and a plurality of dust concentration values are stored in the storage device, and a plurality of preset dust concentration regions set in advance are classified according to these dust concentration values. . Further, the control device 19 stores operating conditions of the blower 13 and the dust collector 16 corresponding to the plurality of set dust concentration ranges in the storage device.

具体的には、制御装置１９は、所定の演算を行う中央処理装置と所定の条件を記憶する記憶装置とを有するマイクロプロセッサ（図示せず）により構成されている。この制御装置１９には、キーボードやテンキーユニットなどの入力装置、プリンタなどの出力装置、液晶ディスプレイやＣＲＴなどの表示装置（いずれも図示せず）をインターフェイスにより接続することができる。このトンネル換気システム１０の起動中、制御装置１９には、粉塵濃度計測センサ２０から切羽１２付近の粉塵濃度実測値が常時入力されている。制御装置１９の制御部は、記憶装置に格納されたアプリケーションプログラムを起動し、所定のオペレーティングシステムに従い、予め設定された複数の設定粉塵濃度域と、これら複数の設定粉塵濃度域に応じた送風機１３と集塵機１６の運転条件とを記憶する記憶手段と、粉塵濃度計測センサ２０から出力される切羽１２付近における粉塵濃度実測値が前述した複数の設定粉塵濃度域におけるいずれの範囲にあるかを判定する粉塵濃度判定手段と、この粉塵濃度判定手段で判定された結果として、送風機１３と集塵機１６の運転条件を選択する運転条件選択手段と、この運転条件選択手段に基づいて送風機１３と集塵機１６との運転を制御する運転制御手段とを実行する。   Specifically, the control device 19 is constituted by a microprocessor (not shown) having a central processing unit that performs a predetermined calculation and a storage device that stores a predetermined condition. The control device 19 can be connected to an input device such as a keyboard and a numeric keypad unit, an output device such as a printer, and a display device such as a liquid crystal display and a CRT (none of which are shown) via an interface. During the activation of the tunnel ventilation system 10, the measured dust concentration value near the face 12 is constantly input to the control device 19 from the dust concentration measurement sensor 20. The control unit of the control device 19 activates an application program stored in the storage device, and in accordance with a predetermined operating system, a plurality of preset dust concentration ranges set in advance, and a blower 13 corresponding to the plurality of set dust concentration ranges. And the storage means for storing the operating conditions of the dust collector 16 and the measured range of the dust concentration in the vicinity of the face 12 output from the dust concentration measurement sensor 20 is determined in which range in the plurality of set dust concentration ranges described above. As a result determined by the dust concentration determination means, the operation condition selection means for selecting the operation conditions of the blower 13 and the dust collector 16, and the blower 13 and the dust collector 16 based on the operation condition selection means. And an operation control means for controlling the operation.

図２のフローチャートに基づき、制御装置１９によって実行されるこのシステムのプロセスの詳細を説明すると、以下のとおりである。最初に、送風機１３が送風ダクト１４と共にトンネル１内に設置され、更に、集塵機１６と制御装置１９とが切羽１２の付近に設置される。制御装置１９は、送風機１３と集塵機１６とに電気的に接続される。制御装置１９には、インターフェイスを介してキーボードやテンキーユニットなどの入力装置、プリンタなどの出力装置、液晶ディスプレイやＣＲＴなどの表示装置が接続され、これらの入力装置と表示装置などを利用して掘削施工するトンネル１の大きさ、或いは地質など各種の条件に基づいて複数の粉塵濃度域（以下、設定粉塵濃度域、という）の範囲を設定する複数の粉塵濃度値が記憶装置に格納され、またこれら粉塵濃度域に基づいた送風機１３と集塵機１６との運転条件が記憶装置に格納される。これらの設定粉塵濃度域や運転条件が、制御装置１９の記憶装置に格納された後は、入力装置、出力装置、表示装置などを制御装置１９から取り外しておいてもよいことは言うまでもない。また、制御装置１９は、坑外又は坑内に設置されている作業管理事務所内のコンピュータと有線又は無線で接続しておくこともできる。このように制御装置１９が作業管理事務所内のコンピュータと接続されていれば、設定粉塵濃度域の範囲やそれに基づいた送風機１３と集塵機１６との運転条件などを新たに設定する際、又は変更する際の作業が容易である。   The details of the process of this system executed by the control device 19 will be described with reference to the flowchart of FIG. First, the blower 13 is installed in the tunnel 1 together with the blower duct 14, and further, the dust collector 16 and the control device 19 are installed in the vicinity of the face 12. The control device 19 is electrically connected to the blower 13 and the dust collector 16. An input device such as a keyboard and numeric keypad unit, an output device such as a printer, and a display device such as a liquid crystal display and a CRT are connected to the control device 19 through an interface. The input device and the display device are used for excavation. A plurality of dust concentration values for setting a plurality of dust concentration ranges (hereinafter referred to as set dust concentration regions) based on various conditions such as the size of the tunnel 1 to be constructed or geology are stored in a storage device, and The operating conditions of the blower 13 and the dust collector 16 based on these dust concentration ranges are stored in the storage device. It goes without saying that the input device, the output device, the display device and the like may be removed from the control device 19 after the set dust concentration range and the operating conditions are stored in the storage device of the control device 19. Moreover, the control apparatus 19 can also be connected with the computer in the work management office installed in the outside of a mine or a mine by wire or radio | wireless. If the control device 19 is connected to the computer in the work management office in this way, the range of the set dust concentration range and the operating conditions of the blower 13 and the dust collector 16 based on the range are newly set or changed. The work at the time is easy.

ここで説明する実施形態では、設定粉塵濃度域として粉塵濃度値が０．７ｍｇ／ｍ３以下の低濃度域、粉塵濃度値が０．７〜３．０ｍｇ／ｍ３の中濃度域、及び粉塵濃度値が３．０ｍｇ／ｍ３以上の高濃度域の三段階に区分されて記憶装置に格納されている。一般的に、トンネル１が山岳トンネルであるとき、切羽１２付近での粉塵濃度が、低濃度域の場合とは、切羽１２での削孔作業、装薬作業、及びロックボルト作業などの時に多く、また、中濃度域の場合とは、切羽１２近傍でのずり出し作業、及び吹き付け作業などの時に多く、さらに、高濃度域の場合とは、切羽１２の発破直後の時に多い。このように切羽１２付近の粉塵濃度実測値が、低濃度域にあるときには、送風機１３により送風ダクト１４を介して切羽１２に送気される坑外からの新鮮な空気の風量を、約１，６００ｍ３／ｍｉｎ、集塵機１６の運転出力を約１，０００ｍ３／ｍｉｎとし、これを送風機１３及び集塵機１６の第１運転条件とする。 In the described embodiment, the low density region dust concentration value is 0.7 mg / m 3 or less as set dust concentration range, the concentration range in the dust concentration value 0.7~3.0mg / m 3, and dust The concentration value is divided into three levels of a high concentration region of 3.0 mg / m 3 or more and stored in the storage device. In general, when the tunnel 1 is a mountain tunnel, the dust concentration in the vicinity of the face 12 is lower than that in the low-concentration range, and is often used for drilling work, charge work, rock bolt work, etc. In addition, the case of the medium concentration range is often performed during the projecting operation and the spraying operation in the vicinity of the face 12, and the case of the high concentration range is often immediately after the blast of the face 12. As described above, when the measured dust concentration near the face 12 is in the low concentration range, the air volume of fresh air from the outside of the well sent from the blower 13 to the face 12 through the air duct 14 is about 1, 600 m 3 / min, the operation output of the dust collector 16 is about 1,000 m 3 / min, and this is the first operating condition of the blower 13 and the dust collector 16.

また、切羽１２付近の粉塵濃度実測値が、中濃度域にあるときには、送風機１３により送風ダクト１４を介して切羽１２に送気される坑外からの新鮮な空気の風量を、約１，２００ｍ３／ｍｉｎ、集塵機１６の運転出力を約１，６５０ｍ３／ｍｉｎとし、これを送風機１３及び集塵機１６の第２運転条件とする。さらに、切羽１２付近の粉塵濃度実測値が、高濃度域にあるときには、送風機１３により送風ダクト１４を介して切羽１２に送気される坑外からの新鮮な空気の風量を、約１，２００ｍ３／ｍｉｎ、集塵機１６の運転出力を約２，０００ｍ３／ｍｉｎとし、これを送風機１３及び集塵機１６の第３運転条件とする。これを表にすると、下記のとおりである。 When the measured dust concentration near the face 12 is in the middle concentration range, the air volume of fresh air sent from the outside of the mine to the face 12 through the air duct 14 by the blower 13 is about 1,200 m. 3 / min, the operation output of the dust collector 16 is about 1,650 m 3 / min, and this is the second operation condition of the blower 13 and the dust collector 16. Furthermore, when the measured dust concentration near the face 12 is in the high concentration range, the air volume of fresh air from the outside of the mine that is sent to the face 12 through the air duct 14 by the blower 13 is about 1,200 m. 3 / min, the operation output of the dust collector 16 is about 2,000 m 3 / min, and this is the third operating condition of the blower 13 and the dust collector 16. This is shown in the table below.

Figure 2009256929
Figure 2009256929

このように低濃度域、中濃度域、及び高濃度域のそれぞれにおいて、送風機１３と集塵機１６との運転条件を前述したように選択したとき、いずれの場合でもセントル１５の後方（坑口側）における領域２１での粉塵濃度実測値は、約１ｍｇ／ｍ３となる。かかる低濃度域、中濃度域、及び高濃度域のそれぞれにおける送風機１３の送風量、集塵機１６の運転条件の選択は、長い期間に亘ってトンネル内での換気データを集め、分析した結果として得られたものである。 As described above, when the operating conditions of the blower 13 and the dust collector 16 are selected as described above in each of the low concentration region, the medium concentration region, and the high concentration region, in any case, at the rear side (the wellhead side) of the center 15. The actually measured value of the dust concentration in the region 21 is about 1 mg / m 3 . Selection of the air flow rate of the blower 13 and the operating conditions of the dust collector 16 in each of the low concentration range, medium concentration range, and high concentration range is obtained as a result of collecting and analyzing ventilation data in the tunnel over a long period of time. It is what was done.

制御装置１９の記憶装置には、例えば、上述した低濃度域、中濃度域、及び高濃度域の三段階に区分する各設定粉塵濃度値と、切羽１２付近での粉塵濃度実測値がこれら低濃度域、中濃度域、及び高濃度域のいずれかに属している場合における送風機１３と集塵機１６それぞれの運転条件とが記憶される（Ｓ−１及びＳ−２）。かかる粉塵濃度域や、送風機１３と集塵機１６の運転条件は、掘削施工中のトンネル１における各種の設計変更により適宜変更することができる（Ｓ−３）。切羽１２の近くに設置された粉塵濃度検出センサ２０からは、切羽１２の近傍における粉塵濃度実測値が制御装置１９に入力されると（Ｓ−４）、制御装置１９の制御部は、入力された粉塵濃度実測値が低濃度域に属するか否かを判定する（Ｓ−５）。   In the storage device of the control device 19, for example, the set dust concentration values classified into the above-described three levels of the low concentration region, the medium concentration region, and the high concentration region, and the actually measured dust concentration values near the face 12 are low. The operating conditions of the blower 13 and the dust collector 16 in the case of belonging to any of the concentration range, the medium concentration range, and the high concentration range are stored (S-1 and S-2). The dust concentration range and the operating conditions of the blower 13 and the dust collector 16 can be appropriately changed by various design changes in the tunnel 1 during excavation (S-3). When the measured dust concentration in the vicinity of the face 12 is input from the dust concentration detection sensor 20 installed near the face 12 to the control device 19 (S-4), the control unit of the control device 19 is input. It is determined whether the measured dust concentration actually belongs to the low concentration range (S-5).

粉塵濃度実測値が、例えば、低濃度域に属する０．７ｍｇ／ｍ３以下であった場合には、低濃度域に属すると判定され、制御装置１９の制御部は、送風機１３と集塵機１６とについて第１運転条件を選択し、送風機１３を１，６００ｍｇ／ｍ３の送風量になるように運転し、集塵機１６については、１，０００ｍｇ／ｍ３になるようにその運転を制御する（Ｓ−６）。図１は、切羽１２付近の粉塵濃度実測値が、低濃度域に属する場合、第１条件で運転される送風機１３からの送風量が集塵機１６による空気浄化量より多いので、集塵機１６により浄化された空気のほぼ全量は、トンネル１の坑口へ向かって流れる。 For example, when the actually measured dust concentration is 0.7 mg / m 3 or less belonging to the low concentration region, it is determined that the dust concentration belongs to the low concentration region, and the control unit 19 of the control device 19 includes the blower 13 and the dust collector 16. for selecting a first operating condition, operating the blower 13 so that the blowing rate of 1,600 mg / m 3, for the dust collector 16 controls the operation so as to 1,000mg / m 3 (S -6). FIG. 1 shows that when the measured dust concentration near the face 12 belongs to a low concentration range, the amount of air blown from the blower 13 operated under the first condition is larger than the amount of air purified by the dust collector 16, and thus is purified by the dust collector 16. Almost all of the air flows toward the tunnel 1 wellhead.

ところで、粉塵濃度実測値が低濃度域に属すると判定されなかった場合には、入力された粉塵濃度実測値が中濃度域に属するか否かを判定する（Ｓ−７）。粉塵濃度実測値が、例えば、中濃度域に属する０．７〜３．０ｍｇ／ｍ３の範囲にあった場合には、中濃度域に属すると判定され、制御装置１９の制御部は、送風機１３と集塵機１６とについて第２運転条件を選択し、送風機１３を１，２００ｍｇ／ｍ３の送風量になるように運転し、集塵機１６については、１，６５０ｍｇ／ｍ３になるようにその運転を制御する（Ｓ−８）。図３は、切羽１２付近の粉塵濃度実測値が、中濃度域に属する場合、第２条件で運転される送風機１３からの送風量が集塵機１６による空気浄化量より若干少ないので、集塵機１６により浄化された空気の一部は切羽１２の方向に流れながら、切羽１２付近の気圧バランスを保つような量の空気がトンネル１の坑口へ向かって流れる。 If it is not determined that the measured dust concentration value belongs to the low concentration range, it is determined whether the input measured dust concentration value belongs to the middle concentration range (S-7). For example, when the actually measured dust concentration is in the range of 0.7 to 3.0 mg / m 3 belonging to the medium concentration range, it is determined that the dust concentration belongs to the medium concentration region, and the control unit 19 of the control device 19 The second operating condition is selected for the dust collector 16 and the dust collector 16, the blower 13 is operated so as to have an air flow rate of 1,200 mg / m 3 , and the dust collector 16 is operated so as to be 1,650 mg / m 3. Is controlled (S-8). FIG. 3 shows that when the measured dust concentration in the vicinity of the face 12 belongs to the middle concentration range, the amount of air blown from the blower 13 operated under the second condition is slightly less than the amount of air purified by the dust collector 16. While a part of the air that has flowed in the direction of the face 12, an amount of air that maintains the atmospheric pressure balance near the face 12 flows toward the tunnel 1.

しかし、粉塵濃度実測値が中濃度域に属すると判定されなかった場合には、次に、入力された粉塵濃度実測値が高濃度域に属するかを判定する（Ｓ−９）。そして、送風機１３と集塵機１６とは前述した第３条件で運転される（Ｓ−１０）。粉塵濃度実測値が、例えば、高濃度域に属する３．０ｍｇ／ｍ３以上であった場合には、高濃度域に属すると判定され、制御装置１９の制御部は、送風機１３と集塵機１６とについて第３運転条件を選択し、送風機１３を１，２００ｍｇ／ｍ３の送風量になるように運転し、集塵機１６については、２，０００ｍｇ／ｍ３になるようにその運転を制御する（Ｓ−１０）。図４は、切羽１２付近の粉塵濃度実測値が、高濃度域に属する場合を示しており、第３条件で運転される集塵機１６による吸引空気量は、送風機１３からの送風量より非常に多い。そのため、切羽１２付近の漂う粉塵を含む大量の空気が集塵機１６に吸引されて浄化されるので、集塵機１６により浄化された空気の一部は切羽１２の方向にも流れて循環し、切羽１２付近の気圧バランスを保つような量の空気がトンネル１の坑口へ向かって流れる。しかし、粉塵濃度実測値が高濃度域に属すると判定されなかった場合には、入力された粉塵濃度実測値は低濃度域から再び判定が繰り返される。 However, if it is not determined that the measured dust concentration value belongs to the middle concentration range, it is next determined whether the input measured dust concentration value belongs to the high concentration range (S-9). And the air blower 13 and the dust collector 16 are drive | operated on the 3rd conditions mentioned above (S-10). For example, when the measured value of the dust concentration is 3.0 mg / m 3 or more belonging to the high concentration region, it is determined that the dust concentration belongs to the high concentration region, and the control unit 19 of the control device 19 The third operating condition is selected, the blower 13 is operated so as to have an air flow rate of 1,200 mg / m 3 , and the operation of the dust collector 16 is controlled so as to be 2,000 mg / m 3 (S -10). FIG. 4 shows a case where the measured dust concentration near the face 12 belongs to a high concentration region, and the amount of air sucked by the dust collector 16 operated under the third condition is much larger than the amount of air blown from the blower 13. . Therefore, since a large amount of air containing dust drifting near the face 12 is sucked into the dust collector 16 and purified, a part of the air purified by the dust collector 16 also flows in the direction of the face 12 and circulates in the vicinity of the face 12. An amount of air that maintains the atmospheric pressure balance flows toward the tunnel's wellhead. However, if it is not determined that the measured dust concentration value belongs to the high concentration range, the determination of the input measured dust concentration value is repeated from the low concentration range.

本発明に係る掘削施工中のトンネル換気システムにおける前述した実施形態では、送風機１３と集塵機１６の各運転条件を低濃度域の場合、中濃度域の場合、高濃度域の場合の三段階に区分したが、本発明において送風機１３及び集塵機１６の運転条件を定める区分が三段階である必要はなく、切羽１２付近での粉塵濃度域をさらに細かく区分けし、これらの区分に対応した送風機１３と集塵機１６との運転条件を設定することもできる。   In the above-described embodiment of the tunnel ventilation system during excavation work according to the present invention, each operating condition of the blower 13 and the dust collector 16 is divided into three stages: a low concentration region, a medium concentration region, and a high concentration region. However, in the present invention, the classification for determining the operating conditions of the blower 13 and the dust collector 16 does not have to be in three stages, and the dust concentration region near the face 12 is further finely divided, and the blower 13 and the dust collector corresponding to these classifications. The operation condition with 16 can also be set.

前述した説明から明らかなように、切羽１２付近の粉塵濃度実測値が低濃度域にある場合、トンネル１内が高温になっている時、従来であれば集塵機１６の運転出力低下に伴って送風機１３の運転出力も低下してトンネル１内の環境改善を図ることができなかったが、上述した本発明に係る掘削施工中のトンネル換気システムによれば、切羽１２付近での粉塵濃度実測値が低濃度域にあるときでも、予め設定された送風機１３の送風量が多い運転条件で運転されることから、トンネル１内に坑外の新鮮な空気を十分に送気することができ、しかも集塵機１６の運転出力は低いことから運転コストも抑えながらトンネル内の作業環境を向上させることができる。   As is clear from the above description, when the measured dust concentration near the face 12 is in a low concentration range, when the tunnel 1 is at a high temperature, the blower is conventionally accompanied by a decrease in the operation output of the dust collector 16. However, according to the tunnel ventilation system during excavation work according to the present invention described above, the actual measured value of the dust concentration in the vicinity of the face 12 can be obtained. Even when it is in the low concentration range, since it is operated under the operating conditions in which the preset blower 13 has a large amount of air flow, fresh air outside the mine can be sufficiently fed into the tunnel 1, and the dust collector Since the operation output of 16 is low, it is possible to improve the working environment in the tunnel while suppressing the operation cost.

切羽付近の粉塵濃度実測値が低濃度域にあるときのトンネルの切羽付近における概略的な構成説明図。FIG. 3 is a schematic configuration explanatory diagram near the face of a tunnel when the measured dust concentration near the face is in a low concentration range. 本発明に係る掘削施工中のトンネル換気システムの一例についての動作を示すフローチャート図。The flowchart figure which shows the operation | movement about an example of the tunnel ventilation system in the excavation construction which concerns on this invention. 切羽付近の粉塵濃度実測値が中濃度域にあるときのトンネルの切羽付近における概略的な構成説明図。FIG. 3 is a schematic configuration explanatory diagram near the face of the tunnel when the measured dust concentration near the face is in the middle concentration range. 切羽付近の粉塵濃度実測値が高濃度域にあるときのトンネルの切羽付近における概略的な構成説明図。FIG. 3 is a schematic configuration explanatory view near the face of a tunnel when the measured dust concentration near the face is in a high concentration region.

符号の説明Explanation of symbols

１０ 掘削施工中のトンネル換気システム
１１ 掘削施工中のトンネル
１２ 切羽
１３ 送風機
１４ 送風ダクト
１５ セントル
１６ 集塵機
１７ 吸引ダクト
１８ 切羽付近での粉塵
１９ 制御装置
２０ 粉塵濃度計測センサ（粉塵濃度検出手段） DESCRIPTION OF SYMBOLS 10 Tunnel ventilation system during excavation construction 11 Tunnel under excavation construction 12 Face 13 Blower 14 Air duct 15 Centle 16 Dust collector 17 Suction duct 18 Dust in the vicinity of face 19 Control device 20 Dust concentration measurement sensor (Dust concentration detection means)

Claims (6)

掘削施工中の前記トンネルの切羽へ向かって延びる送風ダクトを介して新鮮な空気を前記切羽に送気する送風機と、前記切羽の近くに設置され、該切羽及びその付近で発生する粉塵を捕集して浄化する集塵機との運転を制御装置により制御して掘削施工中のトンネル内を換気するトンネル換気方法において、
前記トンネルの前記切羽に近い箇所に設置された粉塵濃度検出手段からの粉塵濃度実測値を前記制御装置に供給すること、
前記粉塵濃度実測値が供給された前記制御装置における制御部が、前記制御装置の記憶装置に予め格納されている複数の設定粉塵濃度域のうちのいずれに属するかを判定し、これら設定粉塵濃度域に応じて、前記記憶装置に予め格納されている前記送風機及び前記集塵機の運転条件を選択して前記送風機及び前記集塵機の運転を制御することを特徴とする掘削施工中のトンネル換気方法。 A blower for sending fresh air to the face through a blow duct extending toward the face of the tunnel during excavation, and a dust installed near the face and collecting dust generated in the vicinity of the face In the tunnel ventilation method that controls the operation with the dust collector to be purified by the control device and ventilates the tunnel during excavation construction,
Supplying the control device with the measured dust concentration from the dust concentration detecting means installed at a location near the face of the tunnel;
The control unit in the control device to which the actual measured dust concentration value is supplied determines to which of a plurality of set dust concentration ranges stored in advance in the storage device of the control device, and these set dust concentrations A tunnel ventilation method during excavation, wherein the operation condition of the blower and the dust collector is controlled by selecting operation conditions of the blower and the dust collector stored in advance in the storage device according to the area. 前記粉塵濃度検出手段で計測された前記粉塵濃度実測値が、複数の前記設定粉塵濃度域のうち最も低い前記設定粉塵濃度域に属するとき、前記制御装置における前記制御部が、前記送風機による送風量を高くすると共に前記集塵機による吸引空気量を低下させ、前記粉塵濃度検出手段で計測された前記粉塵濃度実測値が複数の前記設定粉塵濃度域のうち最も高い前記粉塵濃度域に属するとき、前記制御装置における前記制御部が、前記送風機による送風量を低くすると共に前記集塵機による吸引空気量を高める請求項１に記載の掘削施工中のトンネル換気方法。   When the measured dust concentration value measured by the dust concentration detection means belongs to the lowest set dust concentration range among the plurality of set dust concentration regions, the control unit in the control device is configured to send an air flow rate by the blower. And the suction air amount by the dust collector is decreased, and when the measured dust concentration value measured by the dust concentration detecting means belongs to the highest dust concentration range among a plurality of the set dust concentration regions, the control is performed. The tunnel ventilation method during excavation construction according to claim 1, wherein the control unit in the apparatus lowers the amount of air blown by the blower and increases the amount of air sucked by the dust collector. 複数の前記設定粉塵濃度域が、低濃度域と、中濃度域と、高濃度域の三段階に区分されて前記記憶装置に格納され、前記粉塵濃度検出手段で計測された前記粉塵濃度実測値が前記中濃度域に属すると前記制御装置の前記制御部が判定したとき、前記送風機による送風量と前記集塵機による吸引空気量とをほぼ同じに調整するように運転制御をする請求項２に記載の掘削施工中のトンネル内換気方法。   The set dust concentration range is divided into three stages of a low concentration range, a medium concentration range, and a high concentration range, stored in the storage device, and measured by the dust concentration detection means. The operation control is performed such that when the control unit of the control device determines that the air concentration belongs to the medium concentration range, the air flow rate by the blower and the suction air amount by the dust collector are adjusted to be substantially the same. Of ventilation in tunnels during excavation work. 掘削施工中のトンネル内を換気するトンネル換気システムにおいて、
掘削施工中の前記トンネルの切羽へ向かって延びる送風ダクトを介して新鮮な空気を前記切羽に送気する送風機と、前記切羽の近くに設置され、前記切羽及びその付近で発生する粉塵を捕集して浄化する集塵機と、前記切羽の近くに設置された粉塵濃度検出手段と、前記送風機、前記集塵機、及び前記粉塵濃度検出手段に電気的に接続され、前記粉塵濃度検出手段からの信号を受けて前記送風機及び前記集塵機の運転を制御する制御装置とから構成され、
前記制御装置が、予め設定された複数の設定粉塵濃度域と、これら複数の前記設定粉塵濃度域に応じた前記送風機及び前記集塵機の運転条件を記憶した記憶装置と、前記粉塵濃度検出手段から供給される粉塵濃度実測値が前記記憶装置に記憶されている複数の前記設定粉塵濃度域のうちのいずれに属するかを判定し、前記設定粉塵濃度域に対応した前記送風機及び前記集塵機の運転条件を選択して前記送風機及び前記集塵機の運転を制御する制御部とを備えている掘削施工中のトンネル換気システム。 In the tunnel ventilation system that ventilates the tunnel during excavation construction,
A blower for sending fresh air to the face through a blow duct extending toward the face of the tunnel under excavation work, and a dust installed near the face and collecting dust generated in the vicinity of the face. A dust collector to be purified, a dust concentration detection means installed near the face, and electrically connected to the blower, the dust collector, and the dust concentration detection means, and receives a signal from the dust concentration detection means. And a control device for controlling the operation of the blower and the dust collector,
The control device supplies a plurality of preset dust concentration ranges set in advance, a storage device storing operating conditions of the blower and the dust collector according to the plurality of set dust concentration zones, and supplied from the dust concentration detection means It is determined which one of the plurality of set dust concentration areas stored in the storage device the actually measured dust concentration value belongs to, and operating conditions of the blower and the dust collector corresponding to the set dust concentration area are determined. A tunnel ventilation system during excavation construction comprising a control unit that selectively controls the operation of the blower and the dust collector. 前記制御装置の前記制御部は、前記粉塵濃度検出手段で計測された粉塵濃度実測値が、複数の前記設定粉塵濃度域のうち最も低い濃度域に属するときには前記送風機による送風量を高くすると共に前記集塵機による吸引空気量を低下させ、前記粉塵濃度検出手段で計測された前記粉塵濃度実測値が複数の前記設定粉塵濃度域のうち最も高い濃度域に属するときには前記送風機による送風量を低くすると共に前記集塵機による吸引空気量を高める請求項４に記載の掘削施工中のトンネル換気システム。   The control unit of the control device increases the amount of air blown by the blower when the measured dust concentration value measured by the dust concentration detection means belongs to the lowest concentration region among the plurality of set dust concentration regions. The suction air amount by the dust collector is reduced, and when the measured dust concentration value measured by the dust concentration detection means belongs to the highest concentration region among the plurality of set dust concentration regions, the amount of air blown by the blower is lowered and The tunnel ventilation system during excavation construction according to claim 4, wherein the amount of air sucked by the dust collector is increased. 複数の前記設定粉塵濃度域が、低濃度域と、中濃度域と、高濃度域の三段階に区分されて前記制御装置の前記記憶装置に記憶され、前記粉塵濃度検出手段で計測された前記粉塵濃度実測値が前記中低濃度域に属するとき、前記制御装置の前記制御部が、前記送風機による送風量と前記集塵機による吸引空気量とをほぼ同じに調整すべく運転を制御する請求項５に記載の掘削施工中のトンネル換気システム。
A plurality of the set dust concentration areas are divided into three stages of a low concentration area, a medium concentration area, and a high concentration area, stored in the storage device of the control device, and measured by the dust concentration detection means 6. The control unit of the control device controls the operation to adjust the amount of air blown by the blower and the amount of sucked air by the dust collector to be substantially the same when the actually measured dust concentration value belongs to the middle and low concentration range. Tunnel ventilation system during excavation as described in.
JP2008105535A 2008-04-15 2008-04-15 Tunnel ventilation method and ventilation system during excavation Active JP5101376B2 (en)

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CN102191935A (en) * 2011-04-14 2011-09-21 淮北矿业股份有限公司 Water vapor rotating jet dust settling device for comprehensive driving working face
CN103808488A (en) * 2014-02-17 2014-05-21 山东科技大学 Simulation experiment device for airborne dust transportation and control of tunneling roadways
CN104481570A (en) * 2014-11-29 2015-04-01 彝良驰宏矿业有限公司 Underground blind tunnel ventilation system
CN104632267A (en) * 2015-01-08 2015-05-20 孙辉 Setting method for automatically purifying air in long tunnel
JP2015212462A (en) * 2014-05-01 2015-11-26 大成建設株式会社 Tunnel ventilation method
JP2019094726A (en) * 2017-11-27 2019-06-20 国立大学法人山口大学 Air conditioning system and method for tunnel
CN110513139A (en) * 2019-10-18 2019-11-29 河南理工大学 A kind of underground flywheel makes mist automatic dustfall device
CN112412534A (en) * 2020-11-05 2021-02-26 国家能源集团乌海能源有限责任公司 Roadway tail gas treatment device and method
JP2023034567A (en) * 2021-08-31 2023-03-13 有限会社 伊藤 Ventilation method inside tunnel during tunnel construction
CN117055459A (en) * 2023-09-11 2023-11-14 辽宁艾特斯智能交通技术有限公司 Tunnel area equipment control system based on PLC
JP7486400B2 (en) 2020-10-26 2024-05-17 株式会社大林組 Ventilation system and ventilation method

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102191935A (en) * 2011-04-14 2011-09-21 淮北矿业股份有限公司 Water vapor rotating jet dust settling device for comprehensive driving working face
CN103808488A (en) * 2014-02-17 2014-05-21 山东科技大学 Simulation experiment device for airborne dust transportation and control of tunneling roadways
JP2015212462A (en) * 2014-05-01 2015-11-26 大成建設株式会社 Tunnel ventilation method
CN104481570A (en) * 2014-11-29 2015-04-01 彝良驰宏矿业有限公司 Underground blind tunnel ventilation system
CN104481570B (en) * 2014-11-29 2016-09-14 彝良驰宏矿业有限公司 A kind of down-hole dead face ventilating system
CN104632267A (en) * 2015-01-08 2015-05-20 孙辉 Setting method for automatically purifying air in long tunnel
JP2019094726A (en) * 2017-11-27 2019-06-20 国立大学法人山口大学 Air conditioning system and method for tunnel
CN110513139A (en) * 2019-10-18 2019-11-29 河南理工大学 A kind of underground flywheel makes mist automatic dustfall device
JP7486400B2 (en) 2020-10-26 2024-05-17 株式会社大林組 Ventilation system and ventilation method
CN112412534A (en) * 2020-11-05 2021-02-26 国家能源集团乌海能源有限责任公司 Roadway tail gas treatment device and method
JP2023034567A (en) * 2021-08-31 2023-03-13 有限会社 伊藤 Ventilation method inside tunnel during tunnel construction
JP7440096B2 (en) 2021-08-31 2024-02-28 島工業Ｈｄ株式会社 Ventilation method inside the tunnel during tunnel construction
CN117055459A (en) * 2023-09-11 2023-11-14 辽宁艾特斯智能交通技术有限公司 Tunnel area equipment control system based on PLC
CN117055459B (en) * 2023-09-11 2024-03-19 辽宁艾特斯智能交通技术有限公司 Tunnel area equipment control system based on PLC

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