JPH062483A - Precedently received material inserting device and precedent receiving construction method - Google Patents
Precedently received material inserting device and precedent receiving construction methodInfo
- Publication number
- JPH062483A JPH062483A JP16311192A JP16311192A JPH062483A JP H062483 A JPH062483 A JP H062483A JP 16311192 A JP16311192 A JP 16311192A JP 16311192 A JP16311192 A JP 16311192A JP H062483 A JPH062483 A JP H062483A
- Authority
- JP
- Japan
- Prior art keywords
- receiving material
- precedently
- ground
- face
- tunnel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は掘削中のトンネルの切羽
面から先受材を地中に挿入する先受材挿入装置及び先受
工法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a receiving material insertion device and a receiving method for inserting a receiving material into the ground from a face face of a tunnel being excavated.
【０００２】[0002]
【従来の技術】最近、未固結地山におけるトンネル工事
では、切羽安定、地表沈下防止のため、大規模な先受工
の施工が補助工法の主流になりつつある。2. Description of the Related Art Recently, in tunnel construction in unconsolidated ground, a large-scale preparatory construction has become the mainstream of the auxiliary construction method in order to stabilize the face and prevent subsidence.
【０００３】従来の先受工法は、油圧により先受材を直
接掘削中のトンネルの切羽面から押し込むか、ビットに
より切羽面の削孔を行った後、形成された孔に先受材を
挿入することにより行われていた。In the conventional receiving method, hydraulic pressure is used to push the receiving material directly from the face of the tunnel being excavated, or after drilling the face using a bit, the receiving material is inserted into the formed hole. It was done by doing.
【０００４】[0004]
【発明が解決しようとする課題】しかし、油圧により先
受材を直接掘削中のトンネルの切羽面から押し込む方法
は、地盤が比較的柔らかく、しかも、地中に存在する礫
分の量が少ない場所でないと先受材を挿入する際の負荷
が大きく、実施が困難である。このため、適用可能な地
山の範囲は狭い。However, the method of pushing the receiving material directly from the face of the tunnel being excavated by hydraulic pressure is a method where the ground is relatively soft and the amount of gravel existing in the ground is small. Otherwise, the load when inserting the receiving material is large and it is difficult to implement. Therefore, the range of applicable ground is narrow.
【０００５】一方、ビットにより切羽面の削孔を行った
後、先受材を挿入する方法においては、ビットによる掘
削の際に、地盤の柔らかい場所ではジャーミング等が生
じることが多く、削孔作業に長時間を要することが多
い。On the other hand, in the method of inserting the pre-bearing material after drilling the face face with the bit, during drilling with the bit, there are many cases where germing occurs in a soft place of the ground. Work often takes a long time.
【０００６】また、ビットによる掘削の後、ビットを引
き抜く際に、形成した孔が崩れて、先受材の挿入が困難
となる場合がある。本発明は上述した問題点を解決する
ためになされたものであり、適用可能な地山の範囲が広
く、しかも、効率的に先受材を挿入することが可能な先
受材挿入装置及び先受工法を提供することを目的とす
る。Further, after the bit is excavated, when the bit is pulled out, the hole formed may be collapsed, which makes it difficult to insert the receiving material. The present invention has been made in order to solve the above-mentioned problems, and has a wide range of applicable ground, and a receiving material insertion device and a receiving material capable of efficiently inserting a receiving material. The purpose is to provide a construction method.
【０００７】[0007]
【課題を解決するための手段】以上の目的を達成するた
め、本発明は、先受材を押圧することにより前記先受材
を掘削中のトンネルの切羽面から地中に挿入する先受材
挿入装置において、前記先受材挿入装置には前記先受材
をその押圧方向に往復振動させるバイブレータが備えら
れているように構成した。In order to achieve the above object, the present invention is directed to a receiving material for inserting the receiving material into the ground from a face face of a tunnel being excavated by pressing the receiving material. In the insertion device, the receiving material inserting device is configured to include a vibrator that reciprocally vibrates the receiving material in the pressing direction.
【０００８】また、先受材を押圧することにより前記先
受材を掘削中のトンネルの切羽面から地中に挿入する先
受工法において、前記先受材をその押圧方向に往復振動
させて挿入するように構成した。In addition, in a receiving method in which the receiving material is inserted into the ground from the face of a tunnel being excavated by pressing the receiving material, the receiving material is reciprocally oscillated in the pressing direction and inserted. Configured to do so.
【０００９】[0009]
【作用】本発明の先受材挿入装置によれば、先受材をそ
の押圧方向に往復振動させるバイブレータを備えている
ので、先受材を押圧方向に往復振動させながら地中に挿
入することが可能になる。According to the receiving material inserting device of the present invention, since the receiving material is provided with the vibrator that reciprocally vibrates in the pressing direction, the receiving material can be inserted into the ground while reciprocally vibrating in the pressing direction. Will be possible.
【００１０】一方、本発明の先受工法によれば、切羽面
から直接先受材を挿入するので、削孔作業が不要とな
り、その分、作業の省力化を図ることが可能になる。ま
た、先受材を押圧方向に往復振動させながら地中に挿入
するので、単に先受材を押し込む場合に比べ、適用地山
が拡がり、長尺のものを早く打込む事が可能となり、挿
入作業を迅速、確実に行うことが可能になる。On the other hand, according to the receiving method of the present invention, since the receiving material is inserted directly from the face of the face, the drilling work is not required, and the labor can be saved accordingly. Also, since the receiving material is inserted into the ground while reciprocatingly vibrating in the pressing direction, the applicable ground is wider than when simply pushing in the receiving material, and it is possible to drive long objects quickly. Work can be performed quickly and reliably.
【００１１】さらに、地山との共振を避けられるため全
体振動が小さくなり、振動が伝わる距離も短くなるため
地山のゆるみも小さく押さえられる。Further, since the resonance with the natural ground can be avoided, the overall vibration becomes small, and the distance through which the vibration is transmitted becomes short, so that the looseness of the natural ground can be suppressed small.
【００１２】[0012]
【実施例】以下、図面を参照して本発明の実施例につい
て説明する。図１は本発明に係る先受材挿入装置１０を
示す。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a receiving material insertion device 10 according to the present invention.
【００１３】図１において、本発明に係る先受材挿入装
置１０は掘削中のトンネル２０の切羽面２１の近傍に設
置されている。この先受材挿入装置１０は、車体１７
と、この車体１７の上面に搭載されたパワーユニット１
１と、車体１７の上面に立設した支柱１２ａ、１２ｂ
と、この支柱１２ａ、１２ｂに支持され、掘削方向に延
在するガイド１３とを備えている。In FIG. 1, the receiving material inserting device 10 according to the present invention is installed near the face 21 of the tunnel 20 during excavation. This receiving material insertion device 10 is provided with a vehicle body 17
And the power unit 1 mounted on the upper surface of the vehicle body 17.
1 and columns 12a and 12b standing on the upper surface of the vehicle body 17
And a guide 13 supported by the columns 12a and 12b and extending in the excavation direction.
【００１４】この車体１７はキャタピラ１４を備えてお
り、また、車体１７内にはキャタピラを駆動させるため
の駆動源（図示せず）が備えられており、これによっ
て、先受材挿入装置１０は掘削中のトンネル２０内を自
由に移動することができるように構成されている。The vehicle body 17 is provided with a caterpillar 14, and a drive source (not shown) for driving the caterpillar is provided in the vehicle body 17, whereby the receiving material inserting device 10 is provided. It is configured so that it can freely move inside the tunnel 20 during excavation.
【００１５】パワーユニット１１の内部には、後述する
油圧バイブレータ１５等を駆動させるための動力源（図
示せず）が備えられている。上記支柱１２ａ、１２ｂに
より支持されているガイド１３上には、このガイド１３
上を摺動可能な油圧バイブレータ１５が備えられてい
る。この油圧バイブレータ１５には、切羽面２１から地
中に挿入される先受材１６の一端が固定されている。Inside the power unit 11, there is provided a power source (not shown) for driving a hydraulic vibrator 15 and the like which will be described later. The guide 13 is mounted on the guide 13 supported by the columns 12a and 12b.
A hydraulic vibrator 15 slidable above is provided. One end of a receiving material 16 that is inserted into the ground from the facet 21 is fixed to the hydraulic vibrator 15.
【００１６】そして、油圧バイブレータ１５がガイド１
３上を切羽面２１方向に摺動することにより、先受材１
６が切羽面２１から地中に挿入されるように構成されて
いる。The hydraulic vibrator 15 guides the guide 1.
By sliding on the face 3 toward the face 21
6 is configured to be inserted into the ground from the face face 21.
【００１７】尚、油圧バイブレータ１５は、先受材１６
を地中に挿入するのに十分な力を得るため、また、低音
かつ低振動で先受材１６を挿入するため、油圧によりガ
イド１３上を摺動するように構成されている。The hydraulic vibrator 15 is made up of the receiving material 16
In order to obtain a sufficient force to insert into the ground, and to insert the receiving material 16 with low sound and low vibration, it is configured to slide on the guide 13 by hydraulic pressure.
【００１８】先受材１６は、掘削中のトンネル２０の切
羽面２１から地中に挿入されることにより、覆工が完了
するまでの間、土圧などの荷重を支え、掘削断面を保持
するものである。この先受材１６としてはシート型、パ
イプ型、鋼棒形等公知のタイプのものを用いることが可
能であり、また、短尺、長尺等そのサイズは問わない。By being inserted into the ground from the face 21 of the tunnel 20 during excavation, the receiving material 16 supports a load such as earth pressure and holds the excavated cross section until the lining is completed. It is a thing. As the receiving material 16, a known type such as a sheet type, a pipe type, a steel rod type can be used, and its size such as short length or long length may be used.
【００１９】また、この油圧バイブレータ１５は、先受
材１６をその進行方向に向かって、１，０００〜４，０
００回／分程度の超高速で往復振動させることができる
ように構成されている。Further, in the hydraulic vibrator 15, the receiving material 16 is 1,000 to 4,0 in the traveling direction.
It is configured to be capable of reciprocating vibration at an ultra-high speed of about 00 times / minute.
【００２０】従って、本発明に係る先受材挿入装置１０
においては、先受材１６をその進行方向に向かって超高
速で往復振動させながら、地中に挿入することが可能に
なる。Therefore, the receiving material inserting device 10 according to the present invention.
In the above, it becomes possible to insert the receiving material 16 into the ground while reciprocally vibrating at a super high speed in the traveling direction.
【００２１】次に、本発明に係る先受工法について説明
する。本発明に係る先受工法においては、掘削中のトン
ネル２０の切羽面２１に油圧バイブレータ１５に固定さ
れた先受材１６の先端を当接させる。そして、油圧バイ
ブレータ１５を稼働させて、先受材１６を水平方向に超
高速振動させる。この状態で油圧バイブレータ１５をガ
イド１３上で、トンネル２０の切羽面２１方向に移動さ
せて行く。Next, the preparatory method according to the present invention will be described. In the receiving method according to the present invention, the tip of the receiving material 16 fixed to the hydraulic vibrator 15 is brought into contact with the facet 21 of the tunnel 20 during excavation. Then, the hydraulic vibrator 15 is operated to vibrate the receiving material 16 in the horizontal direction at ultra-high speed. In this state, the hydraulic vibrator 15 is moved on the guide 13 toward the face 21 of the tunnel 20.
【００２２】これによって、油圧バイブレータ１５に取
り付けられた先受材１６は、その進行方向に超高速振動
しながら、次第に地中に挿入されて行く。このように本
発明に係る先受工法は、先受材１６をその進行方向に超
高速振動させながら地中に挿入させるものであるので、
単に油圧で先受材を挿入する場合に比べ、適応地山も拡
がり、長尺のものを素早く打込む事が可能となる。さら
に、地山との共振を避けられるため全体振動が小さくな
り、振動が伝わる距離も短くなるため、地山のゆるみも
小さく押さえられるという利点を有する。As a result, the receiving material 16 attached to the hydraulic vibrator 15 is gradually inserted into the ground while vibrating at a very high speed in the traveling direction. In this way, the receiving method according to the present invention is to insert the receiving material 16 into the ground while vibrating the receiving material 16 at an ultra-high speed in its traveling direction.
Compared to the case where the receiving material is simply inserted by hydraulic pressure, the applicable ground is widened, and it becomes possible to drive long objects quickly. Further, since the resonance with the natural ground can be avoided, the whole vibration becomes small, and the distance that the vibration is transmitted becomes short, so that there is an advantage that the looseness of the natural ground can be suppressed small.
【００２３】また、本発明に係るトンネル工事における
先受工法においては、ビットによる掘削や、ビットの引
き抜きの作業を行う必要がないので、作業の省力化、迅
速化を図ることが可能である。Further, in the tunnel receiving method according to the present invention, it is not necessary to excavate the bit or pull out the bit. Therefore, it is possible to save labor and speed up the work.
【００２４】このように先受材１６の挿入が行われた
後、再び切羽面２１の掘削が行われる。このとき、掘削
を行うトンネルの上面には、先受材１６が挿入されてい
るので、土砂が崩れ落ちることが防止され、掘削断面を
保持することが可能なる。After the receiving material 16 is inserted in this manner, the facet 21 is excavated again. At this time, since the receiving material 16 is inserted on the upper surface of the tunnel for excavation, the sediment is prevented from collapsing, and the excavated cross section can be held.
【００２５】尚、本発明は上述した実施例に限定される
ものではなく、適宜変更を加えることが可能である。例
えば、先受材挿入装置に、水を高圧で噴射するための高
圧噴射機と専用のパワーユニットを設け、先受材先端の
１ヶ所あるいは数ヶ所から水を高圧噴射することができ
るように構成することも可能である。このような構成を
採用することにより適応土質が広がり、玉石混り礫質
土、固結土さらには岩盤等（通常、弾性波測定値が２０
０ｋｇ／ｃｍ2程度以下）にも適用可能となる。この場
合の水圧としては、例えば１５０ｋｇｆ／ｃｍ2程度の
高圧とすることができる。The present invention is not limited to the above-mentioned embodiments, but can be modified appropriately. For example, the receiving material insertion device is provided with a high-pressure jetting machine for injecting water at high pressure and a dedicated power unit so that the high-pressure water can be injected from one or several points at the tip of the receiving material. It is also possible. By adopting such a configuration, the adaptive soil quality is expanded, and boulder-mixed gravel soil, solidified soil, rock mass, etc.
0 kg / cm 2 or less). The water pressure in this case may be a high pressure of, for example, about 150 kgf / cm 2 .
【００２６】[0026]
【発明の効果】以上のように構成した本発明によれば、
適用可能な地山の範囲が広く、しかも、効率的に先受材
を挿入することが可能になるという効果を奏する。According to the present invention configured as described above,
There is an effect that the range of applicable ground is wide, and the receiving material can be efficiently inserted.
【図１】本発明に係る先受材挿入装置を説明するための
全体概略図。FIG. 1 is an overall schematic diagram for explaining a receiving material insertion device according to the present invention.
１０・・・先受材挿入装置 １１・・・パワーユニット １２ａ、１２ｂ・・・支柱 １３・・・ガイド １４・・・キャタピラ １５・・・油圧バイブレータ １６・・・先受材 １７・・・車体 ２０・・・トンネル ２１・・・切羽面 10 ... Receiving material insertion device 11 ... Power unit 12a, 12b ... Strut 13 ... Guide 14 ... Caterpillar 15 ... Hydraulic vibrator 16 ... Receiving material 17 ... Vehicle body 20・ ・ ・ Tunnel 21 ・ ・ ・ Face
Claims (2)
掘削中のトンネルの切羽面から地中に挿入する先受材挿
入装置において、前記先受材挿入装置には前記先受材を
その押圧方向に往復振動させるバイブレータが備えられ
ていることを特徴とする先受材挿入装置。1. A receiving material inserting device for inserting the receiving material into the ground from a face face of a tunnel being excavated by pressing the receiving material, wherein the receiving material inserting device includes the receiving material. A receiving material insertion device, comprising: a vibrator that reciprocally vibrates in the pressing direction.
掘削中のトンネルの切羽面から地中に挿入する先受工法
において、前記先受材をその押圧方向に往復振動させて
挿入することを特徴とする先受工法。2. In a receiving method in which the receiving material is inserted into the ground from a face face of a tunnel being excavated by pressing the receiving material, the receiving material is reciprocally oscillated in the pressing direction and inserted. The receiving method which is characterized by
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16311192A JPH062483A (en) | 1992-06-22 | 1992-06-22 | Precedently received material inserting device and precedent receiving construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16311192A JPH062483A (en) | 1992-06-22 | 1992-06-22 | Precedently received material inserting device and precedent receiving construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH062483A true JPH062483A (en) | 1994-01-11 |
Family
ID=15767375
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16311192A Pending JPH062483A (en) | 1992-06-22 | 1992-06-22 | Precedently received material inserting device and precedent receiving construction method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH062483A (en) |
-
1992
- 1992-06-22 JP JP16311192A patent/JPH062483A/en active Pending
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