JP4759754B2 - Transporting excavated soil in dam construction - Google Patents

Transporting excavated soil in dam construction Download PDF

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JP4759754B2
JP4759754B2 JP2007227403A JP2007227403A JP4759754B2 JP 4759754 B2 JP4759754 B2 JP 4759754B2 JP 2007227403 A JP2007227403 A JP 2007227403A JP 2007227403 A JP2007227403 A JP 2007227403A JP 4759754 B2 JP4759754 B2 JP 4759754B2
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excavated soil
access road
dam
aggregate
site
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JP2009057779A (en
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安夫 米田
逸郎 堺
則秀 石橋
清浩 戸澤
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Okumura Corp
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Description

本発明は、ダム提体の築造初期段階で行われる、ダム提体の基礎となる岩盤を露出させるための掘削工事で発生する掘削土を土捨て場に搬送するダム工事における掘削土の搬送方法に関する。   The present invention relates to a method for transporting excavated soil in a dam construction in which excavated soil generated in the excavation work for exposing the bedrock serving as the foundation of the dam pier is carried to an abandonment site, which is performed in an initial stage of dam pier construction. About.

ダム提体の築造工事では、先ず、河床、河岸を掘削してダム提体の基礎となる岩盤を露出させ、その後岩盤上にコンクリートを打設して、ダム提体を構築して行く。掘削工事では多量の掘削土が発生する。そして、従来は、掘削土をダム築造現場へのアクセス道路を介して土捨て場まで運搬している。ここで、アクセス道路から土捨て場までの運搬経路は集落を通らないように設定するが、場合によっては集落を通らざるを得なくなって、住民に騒音、振動等で迷惑をかけることがある。   In the construction of the dam body, first, the river bed and the riverbank are excavated to expose the bedrock that is the foundation of the dam body, and then concrete is placed on the bedrock to build the dam body. Excavation works generate a large amount of excavated soil. Conventionally, excavated soil is transported to a dump site via an access road to the dam construction site. Here, the transportation route from the access road to the dumping site is set so that it does not pass through the village, but in some cases, it is forced to pass through the village, which may cause inconvenience to the residents due to noise, vibration, and the like.

ところで、ダム提体の築造に際しては、河岸に骨材製造プラントを配置すると共に、完成時の提体頂部より高い場所にバッチャープラントを配置し、築造現場から然程離れていない場所に存する原石山で採取した骨材原料をコンベア装置により骨材製造プラントに搬送し、骨材製造プラントで製造された骨材をバッチャープラントに搬送してコンクリートを製造することがある（例えば、特許文献１参照）。
特開平７−１１６１８号公報（段落０００４、図１１、図１２） By the way, when constructing the dam body, an aggregate production plant is placed on the riverbank, and a batcher plant is placed higher than the top of the body at the time of completion, so that the rough is not far from the construction site. The aggregate raw material collected at the mountain is conveyed to an aggregate production plant by a conveyor device, and the aggregate produced at the aggregate production plant is conveyed to a batcher plant to produce concrete (for example, Patent Document 1). reference).
JP-A-7-11618 (paragraph 0004, FIG. 11, FIG. 12)

上記の如く原石山で骨材原料を採取する場合は、ダム築造現場へのアクセス道路とは別に原石山へのアクセス道路が設けられる。そして、ダム築造現場へのアクセス道路から土捨て場への経路が集落を回避できなくても、原石山へのアクセス道路から土捨て場への経路は集落を回避できることがある。   When the aggregate raw material is collected at the rough stone as described above, an access road to the rough stone is provided separately from the access road to the dam construction site. Even if the route from the access road to the dam construction site to the dump site cannot avoid the settlement, the route from the access road to the rough stone mountain to the dump site may be able to avoid the settlement.

本発明は、この点に着目し、集落を回避しての掘削土の運搬が可能になるように、掘削土を原石山へのアクセス道路を経由して土捨て場まで搬送できるようにしたダム工事における掘削土の搬送方法を提供することをその課題としている。   The present invention pays attention to this point, so that the excavated soil can be transported to the dumping site via the access road to the ore mountain so that the excavated soil can be transported while avoiding the village. The problem is to provide a method for transporting excavated soil in construction.

上記課題を解決するために、本発明は、ダム提体の築造初期段階で行われる、ダム提体の基礎となる岩盤を露出させるための掘削工事で発生する掘削土を土捨て場に搬送する方法であって、掘削土が発生するダム築造現場へのアクセス道路から土捨て場までの経路が集落を通り、原石山へのアクセス道路から土捨て場までの経路が集落を回避でき、掘削土が発生するダム築造現場から骨材製造プラントまでの経路が集落を回避できる場合において、原石山で採取した骨材原料を原石山へのアクセス道路から河岸に配置した骨材製造プラントへ搬送するためのコンベア装置を設置し、掘削工事で発生する掘削土を河岸に設けた道路を介してコンベア装置まで運搬した後、コンベア装置を骨材原料の搬送時とは逆方向に駆動して、掘削土をコンベア装置により原石山へのアクセス道路まで搬送し、このアクセス道路を介して土捨て場まで掘削土を運搬することを特徴とする。 In order to solve the above-mentioned problems, the present invention transports excavated soil generated in excavation work for exposing the bedrock that is the foundation of the dam dam to the earth dump site. The route from the access road to the dam construction site where the excavated soil is generated to the dump site passes through the village, and the route from the access road to the rough stone mountain to the dump site can avoid the village, and the excavated soil When the route from the site where the dam is generated to the aggregate production plant can avoid villages, the aggregate material collected at the ore mountain is transported from the access road to the ore mountain to the aggregate production plant located on the riverbank. After the excavation soil generated during excavation work is transported to the conveyor device via the road provided on the riverbank, the conveyor device is driven in the opposite direction to the conveyance of the aggregate raw material, Combe It conveyed to access roads to rough mountain by the device, wherein the transporting excavated soil to soil dump via the access road.

本発明によれば、掘削工事で発生する掘削土が原石山へのアクセス道路に搬送されるため、原石山へのアクセス道路から土捨て場への経路が集落を回避できる場合には、住民に騒音、振動等の迷惑をかけることなく土捨て場まで掘削土を運搬できる。また、本発明では、骨材原料用のコンベア装置を用いて掘削土を原石山へのアクセス道路まで搬送するため、掘削土用の別途のコンベア装置を設置せずに済み、合理的である。   According to the present invention, since the excavated soil generated in the excavation work is transported to the access road to the rough stone mountain, if the route from the access road to the rough stone mountain to the dumping site can avoid settlements, Excavated soil can be transported to a dump site without causing inconvenience such as noise and vibration. Further, in the present invention, since the excavated soil is conveyed to the access road to the rough ore using the conveyor device for the aggregate raw material, it is not necessary to install a separate conveyor device for the excavated soil, which is reasonable.

図１を参照して、仮想線で示されているのはこれから築造されるダム提体１である。図中２は河床、３はダム築造現場から然程離れていない場所に存する原石山、４は土捨て場、５は一般道路である。一般道路５からはダム築造現場へのアクセス道路６と、原石山３へのアクセス道路７とが分岐している。ここで、ダム築造現場へのアクセス道路６から土捨て場４までの経路は集落８を通らざるを得ないが、原石山３へのアクセス道路７から土捨て場４までの経路は集落８を回避できる。   With reference to FIG. 1, what is shown by the phantom line is a dam body 1 to be built. In the figure, 2 is a riverbed, 3 is a rough stone mountain that is not far from the dam construction site, 4 is a dumping site, and 5 is a general road. From the general road 5, an access road 6 to the dam construction site and an access road 7 to the rough stone mountain 3 are branched. Here, the route from the access road 6 to the dump site 4 to the dam construction site must pass through the village 8, but the route from the access road 7 to the rough stone mountain 3 to the dump site 4 goes to the village 8. Can be avoided.

原石山３で採取した骨材原料は、原石山３へのアクセス道路７から河岸に配置した骨材製造プラント９へコンベア装置１０により搬送される。コンベア装置１０は、原石山３へのアクセス道路７の脇に設置したホッパ１１と、ホッパ１１から河岸に至る傾斜コンベア１２と、傾斜コンベア１２の下端から払い出される骨材原料を受ける可動コンベア１３とで構成される。   The aggregate raw material collected at the raw stone mountain 3 is conveyed from the access road 7 to the raw stone mountain 3 to the aggregate manufacturing plant 9 arranged on the river bank by the conveyor device 10. The conveyor device 10 includes a hopper 11 installed on the side of the access road 7 to the rough stone 3, an inclined conveyor 12 that extends from the hopper 11 to the river bank, and a movable conveyor 13 that receives the aggregate raw material discharged from the lower end of the inclined conveyor 12. Consists of.

原石山３で採取された骨材原料はダンプトラック１４１で運搬されてホッパ１１に投入され、傾斜コンベア１２と可動コンベア１３とを介して骨材製造プラント９の側部のサージパイル１５に搬送される。サージパイル１５に山積みされた骨材原料ａは骨材製造プラント９に付設した投入コンベア９ａを介して骨材製造プラント９に投入され、該プラント９で細かく破砕されて骨材が製造される。製造された骨材は、完成時のダム提体１の頂部より高い場所に配置したバッチャープラント１６にコンベア１７を介して搬送される。そして、バッチャープラント１６において、セメント、骨材、砂、水を混練してコンクリートが製造される。製造されたコンクリートはケーブルクレーン等によりダム提体１の築造現場のコンクリート打設箇所に搬送される。 Aggregate material taken at rough mountain 3 is turned is conveyed by the dump truck 14 1 to the hopper 11, carried over the inclined conveyor 12 and the movable conveyor 13 to a surge pile 15 of the side of the aggregate production plant 9 Is done. Aggregate raw material a piled up on the surge pile 15 is input to the aggregate manufacturing plant 9 through an input conveyor 9a attached to the aggregate manufacturing plant 9, and is finely crushed in the plant 9 to produce aggregate. The manufactured aggregate is conveyed via a conveyor 17 to a batcher plant 16 arranged at a place higher than the top of the dam dam 1 at the time of completion. In the batcher plant 16, cement, aggregate, sand, and water are mixed to produce concrete. The manufactured concrete is transported to a concrete placement site at the construction site of the dam pier 1 by a cable crane or the like.

ここで、ダム提体１の築造工事では、先ず、河床２や河岸をダム提体１の築造箇所においてパワーシャベル１８等により掘削して、ダム提体１の基礎となる岩盤を露出させ、その後岩盤上にコンクリートを打設して、ダム提体１を構築して行く。掘削工事で発生する掘削土は土捨て場４に搬送する。ここで、ダム築造現場へのアクセス道路６から土捨て場４への経路は集落８を通らざるを得ないため、掘削土をこの経路で運搬したのでは、集落８の住民に騒音、振動等で迷惑をかける。   Here, in the construction work of the dam body 1, first, the river bed 2 and the riverbank are excavated with a power shovel 18 or the like at the construction site of the dam body 1 to expose the bedrock that is the foundation of the dam body 1, and then The concrete is put on the bedrock, and the dam pier 1 is constructed. The excavated soil generated during the excavation work is transported to the dump site 4. Here, the route from the access road 6 to the dumping site 4 to the dam construction site must pass through the village 8, so if excavated soil was transported by this route, noise, vibration, etc. to the residents of the village 8 Inconvenience.

一方、原石山３へのアクセス道路７から土捨て場４までの経路は集落８を通らないように設定できる。従って、掘削土を原石山３へのアクセス道路７を経由して土捨て場４に搬送することが望まれる。然し、この場合には、掘削土を如何にして原石山３へのアクセス道路７まで運び上げるかが問題になる。   On the other hand, the route from the access road 7 to the earthstone mountain 3 to the dump site 4 can be set so as not to pass through the village 8. Therefore, it is desired to transport the excavated soil to the dumping site 4 via the access road 7 to the rough ore 3. However, in this case, it becomes a problem how to carry the excavated soil to the access road 7 to the rough rock 3.

そこで、本実施形態では、掘削工事の開始前に骨材原料用の前記コンベア装置１０を設置し、このコンベア装置１０を用いることで上記の問題を解決している。以下、この点について詳述する。   Therefore, in the present embodiment, the above-described problem is solved by installing the conveyor device 10 for the aggregate raw material before using the excavation work and using the conveyor device 10. Hereinafter, this point will be described in detail.

本実施形態では、河岸に、コンベア装置１０を構成する傾斜コンベア１２の下端部側方に位置させて掘削土用の第１ホッパ１８を設置すると共に、第１ホッパ１８と傾斜コンベア１２の下端部とを結ぶ投入コンベア１９を設置している。また、原石山３へのアクセス道路７の脇に、骨材原料用のホッパ１１から離して掘削土用の第２ホッパ２０を設置し、更に、傾斜コンベア１２の上端部と第２ホッパ２０とを結ぶ払出しコンベア２１を設置している。   In the present embodiment, the first hopper 18 for excavating soil is installed on the riverbank at the lower end side of the inclined conveyor 12 constituting the conveyor device 10, and the lower ends of the first hopper 18 and the inclined conveyor 12 are installed. Is installed. Further, a second hopper 20 for excavating soil is installed on the side of the access road 7 to the rough rock 3 away from the aggregate material hopper 11, and the upper end of the inclined conveyor 12 and the second hopper 20 A payout conveyor 21 is installed.

そして、掘削土をダンプトラック１４２により河岸に設けた道路２２を介して第１ホッパ１８まで運搬して、該ホッパ１８に掘削土を投入する。第１ホッパ１８に投入された掘削土は投入コンベア１９により傾斜コンベア１２の下端部に搬送される。ここで、傾斜コンベア１２は、骨材原料の搬送時とは逆方向、即ち、下方から上方に搬送する方向に駆動され、掘削土は傾斜コンベア１２の下端部から上端部まで搬送される。傾斜コンベア１２の上端部まで搬送された掘削土は、払出しコンベア２１を介して第２ホッパ２０に投入され、第２ホッパ２０からダンプトラック１４３に積み込まれる。そして、このダンプトラック１４３により原石山３へのアクセス道路７から集落８を通らない経路で土捨て場４まで掘削土を運搬する。 By the dump truck 14 2 excavated soil and transported to the first hopper 18 through the road 22 which is provided on the banks, to put the excavated soil into the hopper 18. The excavated soil thrown into the first hopper 18 is conveyed to the lower end of the inclined conveyor 12 by the throwing conveyor 19. Here, the inclined conveyor 12 is driven in a direction opposite to that when the aggregate raw material is conveyed, that is, in a direction of conveying from below to above, and excavated soil is conveyed from the lower end to the upper end of the inclined conveyor 12. Excavated soil conveyed to the upper end of the inclined conveyor 12 is put into the second hopper 20 through the payout conveyor 21, it is loaded from the second hopper 20 to the dump truck 14 3. Then, carrying the excavated soil by the dump truck 14 3 from the access road 7 to the rough mountain 3 in a path that does not pass through the village 8 until the soil dump 4.

これにより、集落８の住民に騒音、振動等の迷惑をかけることを回避できる。また、掘削土を原石山３へのアクセス道路７まで骨材原料用のコンベア装置１０を用いて運び上げるため、掘削土用の別途のコンベア装置を設置せずに済み、合理的である。   Thereby, it is possible to avoid inconvenience such as noise and vibration to the residents of the village 8. Further, since the excavated soil is carried up to the access road 7 to the raw stone mountain 3 using the conveyor device 10 for the aggregate raw material, it is not necessary to install a separate conveyor device for the excavated soil, which is reasonable.

尚、傾斜コンベア１２は、ベルトコンベアやチェーンコンベアから成る所定長さの単位コンベアを複数連設して構成される。ここで、下方から上方への搬送を行う掘削土の搬送時は、図２（ａ）に示す如く、下側の単位コンベア１２Ｌと上側の単位コンベア１２Ｕの端部同士を下側の単位コンベア１２Ｌの端部が上になるようにオーバーラップさせ、上方から下方への搬送を行う骨材原料の搬送時は、図２（ｂ）に示す如く、下側の単位コンベア１２Ｌと上側の単位コンベア１２Ｕの端部同士を上側の単位コンベア１２Ｕの端部が上になるようにオーバーラップさせる必要がある。   The inclined conveyor 12 is configured by connecting a plurality of unit conveyors having a predetermined length including a belt conveyor and a chain conveyor. Here, when excavating soil is conveyed from below to above, as shown in FIG. 2A, the ends of the lower unit conveyor 12L and the upper unit conveyor 12U are connected to each other at the lower unit conveyor 12L. When the aggregate raw material is transported from the upper side to the lower side, the lower unit conveyor 12L and the upper unit conveyor 12U are transported as shown in FIG. 2 (b). It is necessary to overlap the end portions so that the end portion of the upper unit conveyor 12U is on the upper side.

そこで、各単位コンベア１２Ｌ，１２Ｕの端部寄りの部分を上下方向に傾動可能な傾動部１２Ｌａ，１２Ｕａで構成すると共に、上下にオーバーラップする各単位コンベア１２Ｌ，１２Ｕの端部１２Ｌｂ，１２Ｕｂを傾動部１２Ｌａ，１２Ｕａに着脱自在としている。そして、掘削工事の完了で掘削土の搬送が不要になったときは、図２（ａ）に示す状態から各単位コンベア１２Ｌ，１２Ｕの端部１２Ｌｂ，１２Ｕｂを一旦取外して、下側の単位コンベア１２Ｌの傾動部１２Ｌａを下方に傾動させると共に、上側の単位コンベア１２Ｕの傾動部１２Ｕａを上方に傾動させる。その後、各単位コンベア１２Ｌ，１２Ｕの端部１２Ｌｂ，１２Ｕｂを傾動部１２Ｌａ，１２Ｕａに取付けて、図２（ｂ）に示す状態にし、その後の骨材原料の搬送に備える。   Therefore, the portions near the ends of the unit conveyors 12L and 12U are configured by tilting portions 12La and 12Ua that can tilt in the vertical direction, and the end portions 12Lb and 12Ub of the unit conveyors 12L and 12U that overlap vertically are tilted. The parts 12La and 12Ua are detachable. When the excavation work is no longer required after the excavation work is completed, the end portions 12Lb and 12Ub of the unit conveyors 12L and 12U are temporarily removed from the state shown in FIG. The 12L tilting portion 12La is tilted downward, and the tilting portion 12Ua of the upper unit conveyor 12U is tilted upward. Thereafter, the end portions 12Lb and 12Ub of the unit conveyors 12L and 12U are attached to the tilting portions 12La and 12Ua, respectively, so as to be in the state shown in FIG.

本発明の実施形態の搬送方法を示す説明図。Explanatory drawing which shows the conveying method of embodiment of this invention. 実施形態の搬送方法で使用するコンベア装置の一部を示す側面図。The side view which shows a part of conveyor apparatus used with the conveying method of embodiment.

符号の説明Explanation of symbols

１…ダム提体、３…原石山、４…土捨て場、７…原石山へのアクセス道路、１０…コンベア装置、２２…河岸の道路。   DESCRIPTION OF SYMBOLS 1 ... Dam body, 3 ... Haraishiyama, 4 ... Soil dump, 7 ... Access road to Haraishiyama, 10 ... Conveyor device, 22 ... Riverside road

Claims (1)

ダム提体の築造初期段階で行われる、ダム提体の基礎となる岩盤を露出させるための掘削工事で発生する掘削土を土捨て場に搬送する方法であって、
掘削土が発生するダム築造現場へのアクセス道路から土捨て場までの経路が集落を通り、原石山へのアクセス道路から土捨て場までの経路が集落を回避でき、掘削土が発生するダム築造現場から骨材製造プラントまでの経路が集落を回避できる場合において、
原石山で採取した骨材原料を原石山へのアクセス道路から河岸に配置した骨材製造プラントへ搬送するためのコンベア装置を設置し、
掘削工事で発生する掘削土を河岸に設けた道路を介してコンベア装置まで運搬した後、コンベア装置を骨材原料の搬送時とは逆方向に駆動して、掘削土をコンベア装置により原石山へのアクセス道路まで搬送し、このアクセス道路を介して土捨て場まで掘削土を運搬することを特徴とするダム工事における掘削土の搬送方法。 A method of transporting excavated soil generated in excavation work to expose the bedrock that is the foundation of the dam dam to the earth dump,
The route from the access road to the dump site where the excavated soil is generated passes through the village, the route from the access road to the rough stone mountain to the dump site can avoid the village, and the dam is constructed where excavated soil is generated When the path from the site to the aggregate production plant can avoid settlements,
Installed a conveyor device to transport the aggregate raw material collected at the rough stone mountain from the access road to the rough stone mountain to the aggregate manufacturing plant located on the riverbank,
After the excavated soil generated during excavation work is transported to the conveyor device via the road provided on the riverbank, the conveyor device is driven in the opposite direction to the conveyance of the aggregate raw material, and the excavated soil is moved to the rough stone mountain by the conveyor device. A method for transporting excavated soil in a dam construction, characterized in that the excavated soil is transported to an access road and transported to the dump site via the access road.
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