JP2005273430A - Excavating method and device - Google Patents

Excavating method and device Download PDF

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JP2005273430A
JP2005273430A JP2004123514A JP2004123514A JP2005273430A JP 2005273430 A JP2005273430 A JP 2005273430A JP 2004123514 A JP2004123514 A JP 2004123514A JP 2004123514 A JP2004123514 A JP 2004123514A JP 2005273430 A JP2005273430 A JP 2005273430A
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guide post
base machine
ground
swing angle
chain member
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Japanese (ja)
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Tomoaki Shimano
知明 嶌野
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Sanwa Kizai Co Ltd
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Sanwa Kizai Co Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a continuous wall construction method and an excavator using a simple, lightweight device without applying a portal frame method, and allowing autonomous erection without causing the inclination of a chain member and the horizontal turning of a vehicle to bend an excavated ditch during a soil improvement or continuous wall construction. <P>SOLUTION: A device wherein a guide post carrying the rotatable chain member is mounted in a vertically turnable manner to a base machine without having a portal frame is used, and the chain member is rotated in the stop state of the base machine to vertically turn the guide post to a set swing angle to excavate the ground. The guide post is then vertically turned in a reverse direction and returned to a vertical or reverse swing angle. In this state, the base machine is allowed to travel and to be excavated to the tip of the previously excavated swing angle, and the base machine is stopped to vertically turn the guide post to a set swing angle to excavate the ground. The above operation is repeated. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、地盤改良または地中に連続壁を造成するに適する掘削工法及びその装置に関する。  The present invention relates to an excavation method and an apparatus suitable for ground improvement or for creating a continuous wall in the ground.

地盤改良または地中に連続壁を造成する機械として、走行自在なベースマシンにガイドポストを装着し、外面に掘削刃が所定のピッチをもって突設されたチェーン部材を前記ガイドポストの外周面に無端回動自在に卷装した掘削装置が知られている。  As a machine to improve the ground or create a continuous wall in the ground, a guide post is mounted on a base machine that can run freely, and a chain member with drilling blades protruding at a predetermined pitch on the outer surface is endless on the outer peripheral surface of the guide post There is known a drilling rig that is rotatably mounted.

上記掘削装置では、そのガイドポストを地中に挿入する作業、所謂竪掘削は下記のようになされている。即ち、別途用意した竪穴掘削機により竪孔を掘削し、その竪孔にガイドポストを挿入するか、または、短尺のガイドポストを地中に掘削挿入しては次位のガイドポストを継ぎ足して順次掘削挿入して行くという手段が取られている。  In the excavator, the operation of inserting the guide post into the ground, so-called dredging is performed as follows. That is, excavate a borehole with a separately prepared borehole excavator and insert a guide post into the borehole, or insert a short guide post into the ground and add the next guide post sequentially. Means are taken to drill and insert.

そして、その後ベースマシンを走行させて地中を切り進んで行くが、地盤の掘削抵抗が大きいと、チェーン部材が傾いたり、車輌のカッター側のクローラが遅れると共に、反対側のクローラが先行して車輌が水平旋回したりするという問題があるため、その改善策として、ベースマシン停止状態でガイドポストを水平ガイドに沿わせて移動させ切り進む方式として、走行車輌の一側に枠組みをしたフレームを垂直に設け、このフレームの上下の水平部材をガイドとして垂直フレームを横方向に摺動自在に設けた装置、即ち門型フレームを有する装置が一般化されている(特許文献1参照)。  After that, the base machine is driven to cut through the ground, but if the excavation resistance of the ground is large, the chain member tilts, the crawler on the cutter side of the vehicle is delayed, and the crawler on the opposite side leads. Since the vehicle may turn horizontally, as a measure to improve it, a frame with a frame on one side of the traveling vehicle is used as a method of moving the guide post along the horizontal guide while the base machine is stopped. 2. Description of the Related Art A device that is provided vertically and that has a vertical frame slidable in the horizontal direction using horizontal members above and below the frame as a guide, that is, a device having a gate-type frame has been generalized (see Patent Document 1).

尚、ガイドポストを地中に挿入する作業、所謂建て込みに対する改善策として、チェーン部材の下端を地表に傾斜接地させ、チェーン部材の回動により地盤を掘削し得るようガイドポストを垂直旋回動自在に装着する方法が提案されている(特許文献2参照)。
特公平8−6348号公報 特開平9−209396号公報
As an improvement measure for the so-called erection of the guide post into the ground, the guide post can be swung vertically so that the lower end of the chain member can be grounded to the ground and the ground can be excavated by turning the chain member. A method of attaching to the camera has been proposed (see Patent Document 2).
Japanese Patent Publication No. 8-6348 JP-A-9-209396

しかるに上記門型フレームによるものでは、装置自体が高価なものとなっていると共に、安定度を上げるために門型フレームに見合うだけのカウンターウェイトをベースマシン後方に積む必要があり、装置全体の重量を重くする原因になっていた。  However, with the above-mentioned portal frame, the device itself is expensive, and in order to increase stability, it is necessary to load a counterweight suitable for the portal frame at the rear of the base machine. It was the cause that made heavier.

そこで、本発明は門型フレーム方式ではなく、簡略軽量な装置を用い、地盤改良または連続壁造成中にチェーン部材が傾いたり車輌が水平旋回し掘削溝が曲がったりすることがなく、自律建て込みも可能な連続壁の造成工法及びその掘削機を提供することにある。  Therefore, the present invention is not a gate-type frame system, uses a simple and lightweight device, does not tilt the chain member during horizontal improvement or continuous wall construction, the vehicle turns horizontally, and the excavation groove does not bend. Another object is to provide a continuous wall construction method and its excavator.

上記課題を解決する手段として本発明は、門型フレームを有さず、回転自在のチェーン部材を搭載したガイドポストがベースマシンに垂直旋回動自在に装着された装置を用い、ベースマシンを停止させた状態で、チェーン部材を回転させ、設定振れ角までガイドポストを垂直旋回させて地盤を掘削した後、ガイドポストを垂直逆旋回させて垂直または逆振れ角まで戻し、その状態にてベースマシンを先に掘削した振れ角先端部まで掘削走行し、次にベースマシンを停止して設定振れ角までガイドポストを垂直旋回させ、地盤を掘削するという操作を繰り返し行うことを特徴とする掘削工法及びその装置にある。  As a means for solving the above-mentioned problems, the present invention uses a device that does not have a portal frame and has a guide post mounted with a rotatable chain member mounted on the base machine so as to be vertically pivotable, and stops the base machine. In this state, rotate the chain member, vertically rotate the guide post to the set swing angle, excavate the ground, then rotate the guide post vertically reverse to return to the vertical or reverse swing angle, and in that state the base machine Excavation method characterized in that it excavates and travels to the tip of the deflection angle excavated first, then stops the base machine, vertically turns the guide post to the set deflection angle, and repeats the operation of excavating the ground and its In the device.

本発明によれば、まずベースマシンを停止させた状態でチェーン部材を回転させ、設定振れ角までガイドポストを垂直旋回させて地盤を掘削するため、掘削された扇形溝は所望の垂直方向及び進行方向精度を確保でき、次いで、先に掘削した振れ角先端部にガイドポストが到達するまで、この掘削された壁面を垂直方向及び進行方向のガイドとして掘削走行をおこなうため、曲りのない所望の掘削を行うことができる。  According to the present invention, in order to excavate the ground by first rotating the chain member with the base machine stopped and rotating the guide post vertically to the set swing angle, the excavated fan-shaped groove has the desired vertical direction and travel. The direction accuracy can be secured, and then the excavated wall is used as a guide in the vertical direction and the traveling direction until the guide post reaches the tip of the deflection angle excavated earlier, so that the desired excavation without bending is performed. It can be performed.

また、ガイドポストを水平ガイドに沿わせて移動させ切り進ませる装備、即ち門型フレーム装備が不要であるため、装置を軽量・簡略・安価にできる。  Further, since the equipment for moving the guide post along the horizontal guide and cutting it, that is, the gate-type frame equipment is unnecessary, the apparatus can be made lighter, simpler and cheaper.

勿論、該ガイドポストがベースマシンに垂直旋回動自在に装着されているので、特許文献2の自律建て込みも可能であり、高さ制限のある場所に用いる場合はリーダレスで用いることも可能である。  Of course, since the guide post is mounted on the base machine so as to be freely pivotable, it can be built in autonomously as disclosed in Patent Document 2, and can be used without a leader when used in places with height restrictions. is there.

以下、本発明を図面に示す実施の形態を参照して説明する。  The present invention will be described below with reference to embodiments shown in the drawings.

図1は本発明を実施するに用いる連続壁造成装置の一実施形態を示すもので、ベースマシン1は、左右のクローラ2,2を有し、これらクローラ2,2に取付けられた架台3,3の一側にリーダ4の下端が垂直状態に支持され、このリーダ4の中部と架台3の他端側とは補強用のステイ14,14により連結されている。  FIG. 1 shows one embodiment of a continuous wall forming apparatus used for carrying out the present invention. A base machine 1 has left and right crawlers 2 and 2, and a base 3 attached to these crawlers 2 and 2. 3, the lower end of the reader 4 is supported in a vertical state, and the middle part of the reader 4 and the other end of the mount 3 are connected by reinforcing stays 14 and 14.

このリーダ4にガイドポスト7上端の駆動部8を支持する支持部材10を介し、昇降部材9が取付けられており、昇降部材9はウィンチ(図示せず)からトップシーブ25を経由する昇降用ワイヤー26にて上下摺動自在に装着されており、該ガイドポスト7にはその上端の駆動部8内にスプロケットl2が、下端にはガイド輪13がそれぞれ軸支されており、これらスプロケット12とガイド輪13とにわたってチェーン部材5が卷装され、ガイドポスト7の外周に沿って無端回動自在とされている。  An elevating member 9 is attached to the leader 4 via a support member 10 that supports the drive unit 8 at the upper end of the guide post 7. The elevating member 9 is an elevating wire that passes from the winch (not shown) via the top sheave 25. 26, the guide post 7 is supported by a sprocket l2 in the drive section 8 at the upper end thereof, and a guide wheel 13 at the lower end thereof. A chain member 5 is fitted over the wheel 13 so as to be endlessly rotatable along the outer periphery of the guide post 7.

上記チェーン部材5の外面には、図4にその一部を示すように取付座15を介して掘削刃16,16・・・・が一定ピッチを持って取付けられており、前記スプロケット12には図3に示すように前記駆動部8に搭載された掘削用モータ17からギヤ18,19を通じて回転が与えられ、チェーン部材5が無端回動するようになっている。尚、この回転の伝達はギヤ以外のチェーンによるものであってもよい。  Excavation blades 16, 16,... Are attached to the outer surface of the chain member 5 with a fixed pitch via a mounting seat 15 as shown in part in FIG. As shown in FIG. 3, the excavation motor 17 mounted on the drive unit 8 is rotated through gears 18 and 19, so that the chain member 5 rotates endlessly. This rotation transmission may be by a chain other than the gear.

前記昇降部材9には前記支持部材10を介し、ガイドポスト7が垂直面内で旋回自在に装着されている。図示の実施形態では、図3に示すように前記昇降部材9にリングギヤ20が固着され、このリングギヤ20の内周に前記昇降部材9に固設の円形状のガイドリング21が旋回ベアリング22を介して回転自在に取付けられ、支持部材10固設の旋回用モータ23により、回動するピニオン24が前記前記リングギヤ20に噛合わされていて、前記旋回用モータ23の駆動によりピニオン24がリングギヤ20の周囲を回動することによって支持部材10、ガイドポスト7が共に垂直面内で旋回動されるように構成されている。  A guide post 7 is mounted on the elevating member 9 via the support member 10 so as to be rotatable in a vertical plane. In the illustrated embodiment, as shown in FIG. 3, a ring gear 20 is fixed to the elevating member 9, and a circular guide ring 21 fixed to the elevating member 9 is provided on the inner periphery of the ring gear 20 via a slewing bearing 22. The rotating pinion 24 is meshed with the ring gear 20 by a turning motor 23 fixedly supported by the support member 10. The driving of the turning motor 23 causes the pinion 24 to surround the ring gear 20. The support member 10 and the guide post 7 are both turned in a vertical plane by rotating the.

この垂直旋回動は、図6に示したように、昇降部材9に2台の油圧式シリンダ28,28を回動自在に設け、支持部材10上部両端にそれらピストンの先端を回動自在に連結し、昇降部材9と支持部材10とを支持点29で回転自在に軸支してなる装置を用い、シリンダ28,28の伸縮動作により旋回させる方法でもよい。  As shown in FIG. 6, this vertical turning motion is provided with two hydraulic cylinders 28, 28 rotatably on the lifting member 9, and the tip ends of the pistons are rotatably connected to both upper ends of the support member 10. Alternatively, a method in which the lifting member 9 and the support member 10 are pivotally supported by the support point 29 so as to be rotatable and rotated by the expansion and contraction of the cylinders 28 and 28 may be used.

尚、図4において符号27はガイドポスト7内の通路を通じて供給されるセメントミルク等の薬液抽出口である。  In FIG. 4, reference numeral 27 denotes a chemical liquid extraction port such as cement milk supplied through a passage in the guide post 7.

図5の(イ)〜(ヌ)の作用手順説明図に従い説明する。掘削時には、まず掘削開始場所でガイドポスト7を旋回用モータ23の駆動により垂直姿勢にした後、リーダ4先端のシーブを経由する昇降部材9昇降用ワイヤー26を操作して、ガイドポスト7の下端を接地(イ)させ、掘削用モータ17を駆動して、ギヤ18,19を通じスプロケット12を回動させ、チェーン部材5を無端回動させてその掘削刃16,16,・・・・により地盤を掘削しつつガイドポスト7を降下させ所定深さまで建て込む(ロ)。  A description will be given in accordance with the operational procedure explanatory diagrams of FIGS. At the time of excavation, the guide post 7 is first brought into a vertical posture by driving the turning motor 23 at the excavation start location, and then the lower / lower end of the guide post 7 is operated by operating the elevating / lowering member 9 via the sheave at the tip of the leader 4. Is grounded (a), the excavating motor 17 is driven, the sprocket 12 is rotated through the gears 18 and 19, the chain member 5 is rotated endlessly, and the ground is formed by the excavating blades 16, 16,. The guide post 7 is lowered while being excavated and built up to a predetermined depth (b).

次に、チェーン部材5を無端回動させながらガイドポスト7を、旋回用モータ23を駆動させて所定振れ角まで旋回させ、扇形の溝を掘削し(ハ)、旋回用モータ23の駆動を停止した後、ガイドポスト7を、旋回用モータ23を駆動させて垂直姿勢まで旋回させる(ニ)。  Next, while rotating the chain member 5 endlessly, the rotation of the guide post 7 by driving the turning motor 23 to a predetermined swing angle, excavating a fan-shaped groove (c), and stopping the turning motor 23 drive. After that, the guide post 7 is turned to the vertical posture by driving the turning motor 23 (d).

その後、ガイドポスト7を垂直姿勢の状態でクローラ2,2駆動してベースマシン1を、先に掘削した扇形溝の壁をガイドとして扇形溝の先端部まで前進させ(ホ)、クローラ2,2の駆動を停止し、その場所にて引き続きチェーン部材5を無端回動させながらガイドポスト7を、旋回用モータ23を駆動させて所定振れ角まで旋回させて扇形の溝を掘削し(ヘ)、旋回用モータ23の駆動を停止した後、ガイドポスト7を、旋回用モータ23を駆動させて逆振れ角まで旋回させる(ト)またその間に、ガイドポスト7内に設けられた薬液注出口27からセメントミルク等の薬液を注出して回動する掘削刃16,16,・・・・により土砂と混練攪拌し、地盤改良を行っていく。  Thereafter, the crawlers 2 and 2 are driven in a state where the guide post 7 is in the vertical posture, and the base machine 1 is advanced to the tip of the fan-shaped groove using the fan-shaped groove wall that has been excavated as a guide (e). The guide post 7 is driven to rotate to a predetermined deflection angle by driving the turning motor 23 while continuing to endlessly rotate the chain member 5 at that position to excavate a fan-shaped groove (f) After the drive of the turning motor 23 is stopped, the guide post 7 is turned to the reverse deflection angle by driving the turning motor 23 (g). Meanwhile, from the chemical solution outlet 27 provided in the guide post 7. The ground is improved by mixing and agitating with the earth and sand by the excavating blades 16, 16,.

尚このセメントミルクの注出は、図5の(ハ)、(ニ)等、ガイドポスト7が旋回している場合は、注出せず、土壁に対する注出量を管理しやすい手順(ホ)のみ注出し、(ハ)、(ニ)、(ホ)を繰り返す方法を取ってもよい。  Note that this cement milk is not poured out when the guide post 7 is swiveling, such as (c) and (d) in FIG. 5, and the procedure for easily managing the amount poured into the soil wall (e) It is also possible to take out only the same method and repeat (c), (d) and (e).

この後は、ガイドポスト7を逆振れ角の状態でクローラ2,2駆動してベースマシン1を、先に掘削した扇形溝の壁をガイドとして扇形溝の先端部まで前進させ(チ)、クローラ2,2の駆動を停止し、旋回掘削を行う操作を繰り返す(リ)。  Thereafter, the guide post 7 is driven in the crawlers 2 and 2 with the reverse swing angle, and the base machine 1 is advanced to the tip of the fan-shaped groove using the fan-shaped groove wall previously excavated as a guide (C). The operation of 2 and 2 is stopped, and the operation for performing the turning excavation is repeated (re).

尚、終端部においてはガイドポストを逆振れ角まで戻さず垂直姿勢の状態まで戻し旋回させ、最先端の扇形溝の先端部までベースマシン1前進させ(ヌ)、その場所でガイドポスト7を昇降用ワイヤーにて地上まで引き上げる。  At the end, the guide post is not returned to the reverse swing angle, but is swung back to the vertical posture, and the base machine 1 is advanced to the tip of the most advanced fan groove (n), and the guide post 7 is moved up and down at that location. Pull up to the ground with a wire.

このようにして、連続壁の造成は完了するが、地盤改良の場合は、連続壁と同様の方法にて改良を行った第1溝に並行して、第2溝を展開するという方法を繰り返し行うことで所望広さの地盤を改良することができる。  In this way, the creation of the continuous wall is completed, but in the case of ground improvement, the method of expanding the second groove in parallel with the first groove improved by the same method as the continuous wall is repeated. By doing so, it is possible to improve the ground of a desired area.

尚、作用説明図は省略するが、高さ制限等でリーダレス機(図示せず)を用いる場合は、ガイドポスト7を水平に保ち、ベースマシン1を施工場所に移動し、掘削開始位置にガイドポスト7の先端が接地するようガイドポスト7を旋回させる。  Although illustration of the operation is omitted, when a leaderless machine (not shown) is used due to height restrictions, etc., the guide post 7 is kept horizontal, the base machine 1 is moved to the construction site, and the excavation start position is set. The guide post 7 is rotated so that the tip of the guide post 7 is grounded.

次に、掘削用モータ17を駆動して、ギヤ18,19を通じスプロケット12を回動させ、チェーン部材5を無端回動させると共にガイドポスト7旋回させ、その掘削刃16,16,・・・・により地盤を掘削し所定振れ角まで掘削し、その後ガイドポスト7を垂直に戻し、先に掘削した扇形壁をガイドとして掘削開始位置まで掘削しながらクローラ2,2駆動してベースマシン1を戻す。  Next, the excavating motor 17 is driven to rotate the sprocket 12 through the gears 18, 19 to rotate the chain member 5 endlessly and to turn the guide post 7, and the excavating blades 16, 16,. Then, the ground is excavated and excavated to a predetermined deflection angle, and then the guide post 7 is returned vertically, and the base machine 1 is returned by driving the crawlers 2 and 2 while excavating to the excavation start position using the previously excavated fan-shaped wall as a guide.

その後、この状態で掘削方向にベースマシン1を、掘削済壁をガイドとして振れ角先端部まで進め、その後は上記実施例と同様の操作を行い、終点部は立て込み時の逆操作を行うことで造成が完了する。  Thereafter, in this state, the base machine 1 is advanced in the excavation direction to the tip of the deflection angle using the excavated wall as a guide, and thereafter the same operation as in the above embodiment is performed, and the end point is reversely operated when standing. The creation is completed.

本発明の一実施形態を示し、ガイドポストを垂直姿勢とした状態を示す側面図。  The side view which shows one Embodiment of this invention and shows the state which made the guide post the vertical attitude | position. 同、正面図。  Same as above, front view. ガイドポストの上部付近の一部を断面とした拡大側面図。  The enlarged side view which made a part of upper part vicinity of a guide post the cross section. ガイドポストの下端付近を示す拡大側面図。  The enlarged side view which shows the lower end vicinity of a guide post. (イ)〜(ヌ)は作用手順説明図。  (I)-(nu) is an operation procedure explanatory diagram. 本発明の他の実施形態における、垂直旋回機構部付近の側面図。  The side view of the vertical turning mechanism part vicinity in other embodiment of this invention.

符号の説明Explanation of symbols

1 ベースマシン
2 クローラ
4 リーダ
5 チェーン部材
7 ガイドポスト
8 駆動部
9 昇降部材
10 支持部材
11 リングギヤ
12 スプロケット
13 ガイド輪
14 ステイ
16 掘削刃
17 掘削用モータ
20 リングギヤ
21 ガイドリング
22 旋回ベアリング
23 旋回用モータ
24 ピニオン
27 注出口
28 油圧シリンダ
29 支持点
DESCRIPTION OF SYMBOLS 1 Base machine 2 Crawler 4 Leader 5 Chain member 7 Guide post 8 Drive part 9 Lifting member 10 Support member 11 Ring gear 12 Sprocket 13 Guide wheel 14 Stay 16 Excavation blade 17 Excavation motor 20 Ring gear 21 Guide ring 22 Swivel bearing 23 Rotation motor 23 24 Pinion 27 Outlet 28 Hydraulic cylinder 29 Support point

Claims (2)

地盤改良または地中に連続壁を造成する工事において、回転自在のチェーン部材を搭載したガイドポストがベースマシンに垂直旋回動自在に装着された装置を用い、ベースマシンを停止させた状態で、チェーン部材を回転させ、設定振れ角までガイドポストを垂直旋回させて地盤を掘削した後、ガイドポストを垂直逆旋回させて垂直または逆振れ角まで戻し、その状態にてベースマシンを先に掘削した振れ角先端部まで掘削走行を行い、次にベースマシンを停止して設定振れ角までガイドポストを垂直旋回させ、地盤を掘削するという操作を繰り返し行うことを特徴とする掘削工法。  For ground improvement or construction to create a continuous wall in the ground, use a device in which a guide post equipped with a rotatable chain member is mounted on the base machine so that it can be swiveled vertically. Rotate the member, rotate the guide post vertically to the set swing angle and excavate the ground, then rotate the guide post vertically reverse to return to the vertical or reverse swing angle, and the base machine excavated first in that state An excavation method characterized in that the excavation is performed by excavating to the tip of the corner, then stopping the base machine, vertically rotating the guide post to the set deflection angle, and excavating the ground. 掘削刃付チェーン部材を前記ガイドポストの外周面に無端回動自在に卷装した掘削装置において、ガイドポストを水平移動させる装備を有さず、該ガイドポストがベースマシンに垂直旋回動自在に装着されていることを特徴とする掘削装置。  The excavator equipped with a chain member with excavator blades on the outer peripheral surface of the guide post so as to be freely pivotable. The excavator does not have the equipment to move the guide post horizontally. Drilling rig characterized by being made.
JP2004123514A 2004-03-24 2004-03-24 Excavating method and device Pending JP2005273430A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010185213A (en) * 2009-02-12 2010-08-26 Sanwa Kizai Co Ltd Excavating device for reclaiming continuous underground wall
CN102425200A (en) * 2011-09-21 2012-04-25 辽宁抚挖重工机械股份有限公司 Trenching machine and construction method for anti-seepage and water-stopping wall

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010185213A (en) * 2009-02-12 2010-08-26 Sanwa Kizai Co Ltd Excavating device for reclaiming continuous underground wall
CN102425200A (en) * 2011-09-21 2012-04-25 辽宁抚挖重工机械股份有限公司 Trenching machine and construction method for anti-seepage and water-stopping wall

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