JP3396025B2 - Vertical excavation method and device - Google Patents
Vertical excavation method and deviceInfo
- Publication number
- JP3396025B2 JP3396025B2 JP10886899A JP10886899A JP3396025B2 JP 3396025 B2 JP3396025 B2 JP 3396025B2 JP 10886899 A JP10886899 A JP 10886899A JP 10886899 A JP10886899 A JP 10886899A JP 3396025 B2 JP3396025 B2 JP 3396025B2
- Authority
- JP
- Japan
- Prior art keywords
- cylindrical structure
- well
- tubular structure
- excavation
- connecting member
- 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.)
- Expired - Fee Related
Links
Landscapes
- Earth Drilling (AREA)
Description
【０００１】[0001]
【発明が属する技術分野】本発明は、回転掘削装置によ
り地中を垂直に掘削し、掘進に連れて掘削孔内に中空杭
やウエル等の筒状構造物を沈下する立型掘進装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vertical excavating device for vertically excavating the ground by a rotary excavating device and sinking a tubular structure such as a hollow pile or a well into an excavation hole as the excavation proceeds.
【０００２】[0002]
【従来の技術】従来、地表部で中空杭やウエル等の筒状
構造物を構築し、土砂を排除しながら筒状構造物を沈下
する立型掘進工法として、次ぎのものがある。2. Description of the Related Art Conventionally, there are the following vertical excavation methods for constructing a tubular structure such as a hollow pile or a well on the surface of the earth and sinking the tubular structure while removing sediment.
【０００３】その一つは、圧入工法であり、筒状構造物
の自重とアンカにより圧入し、沈下抵抗としては、筒状
構造物の周面摩擦と刃口抵抗である。One of them is a press-fitting method, in which the cylindrical structure is press-fitted by its own weight and an anchor, and the sinking resistance is the peripheral friction and the blade edge resistance of the cylindrical structure.
【０００４】他の一つは、ニューマチックケーソン工法
であり、筒状構造物の自重と積載重量（水）により圧入
し、沈下抵抗としては、筒状構造物の周面摩擦と刃口抵
抗である。その際、沈下の制御は、刃口室内の圧気の調
整で行う。The other is the pneumatic caisson method, in which the cylindrical structure is press-fitted by its own weight and the loaded weight (water), and the sinking resistance is the peripheral surface friction and the blade edge resistance of the cylindrical structure. is there. At this time, the subsidence is controlled by adjusting the pressure in the blade chamber.
【０００５】圧入工法において、ウエルを沈下させて立
坑を構築する場合、ウエルの内部をグラブバケット等の
方法で掘削を行いウエルを圧入していくが、地盤が硬い
場合、刃口抵抗が増加し、沈下不能となることがある。In the press-fitting method, when the well is submerged to construct a vertical shaft, the inside of the well is excavated by a method such as a grab bucket to press-fit the well, but when the ground is hard, the blade resistance increases. , It may become impossible to sink.
【０００６】また、圧入工法は、基本的には刃口の下に
残った地盤を筒状構造物の自重と圧入力で破壊しながら
沈下させるため、一瞬にして筒状構造物が沈下する等沈
下の制御は不可能である。[0006] Further, in the press-fitting method, basically, the ground remaining under the cutting edge is destroyed while being destroyed by the self-weight and pressure input of the cylindrical structure, so that the cylindrical structure is submerged in an instant. Settling control is impossible.
【０００７】次ぎに、ニューマチックケーソン工法は、
圧気室内の空気圧で筒状構造物の自重を支え、刃口の下
を人力又は機械で掘削を行い、減圧して、沈下させるた
め、沈下の制御は可能であるが、外部の水圧に勝る圧気
が必要なため、作業員の安全、管理が重要であると共
に、施工深度に限界がある。Next, the pneumatic caisson method is
The weight of the tubular structure is supported by the air pressure in the pressure chamber, and the bottom of the blade is excavated manually or mechanically to reduce the pressure and cause it to sink.Therefore, sinking can be controlled, but pressure that exceeds the external water pressure is possible. Therefore, the safety and management of workers are important and the construction depth is limited.
【０００８】[0008]
【発明が解決しようとする課題】本発明は、筒状構造物
の沈下を抑制している刃口抵抗を極力除去し、掘削に必
要な掘進推力及び回転力等の掘削反力を筒状構造物及び
回転掘削装置の自重と筒状構造物の周面摩擦とで確保
し、筒状構造物の沈下は筒状構造物及び回転掘削装置の
自重を用い、更に、筒状構造物の沈下を制御すること
で、従来の圧入工法やニューマチックケーソン工法の前
記問題点を解決することを目的とするものである。DISCLOSURE OF THE INVENTION The present invention eliminates as much as possible the blade edge resistance that suppresses the sinking of a cylindrical structure, and the excavation reaction force such as the thrust and the rotational force necessary for excavation is applied to the cylindrical structure. It is ensured by the self-weight of the object and the rotary excavator and the circumferential surface friction of the tubular structure, and the sinking of the tubular structure uses the self-weight of the tubular structure and the rotary excavator to further reduce the sinking of the tubular structure. Controlling is intended to solve the above-mentioned problems of the conventional press-fitting method and pneumatic caisson method.
【０００９】[0009]
【課題を解決するための手段】本発明によれば、回転掘
削装置（１）により地中を垂直に掘削し、掘進に連れて
掘削範囲に筒状構造物（Ｗ）を沈下させる立型掘進装置
において、前記回転掘削装置（１）は筒状構造物（Ｗ）
内に配置された回転駆動部（２）を有して支持部材
（５、６）で筒状構造物（Ｗ）に支持され、筒状構造物
（Ｗ）の外周部には昇降ジャッキ（７）が設けられ、昇
降ジャッキ（７）は２本の油圧ジャッキよりなり、基台
（８）には１対のロッド（９）が連結されてシリンダ
（１０）が昇降するようになっており、それらのシリン
ダ（１０）は連結部材（１１）で相互に連結されてお
り、該基台（８）にはガイドロッド（１２）が立設さ
れ、連結部材（１１）が昇降するように該ガイドロッド
（１２）の先端は基台（８）に立設された脚（１３）の
先端に連結された連結部材（１４）に連結され、そして
基台（８）には油圧ジャッキ（１６）で進退するピン
（１５Ａ）が設けられ、また前記連結部材（１１）には
同様に進退する別のピン（１５Ｂ）が設けられ、そして
筒状構造物（Ｗ）には前記各ピン（１５Ａ、１５Ｂ）を
支持する支持部材が設けられ、筒状構造物（Ｗ）及び回
転掘削装置（１）の自重で沈下する筒状構造物（Ｗ）を
前記昇降ジャッキ（７）でその沈下を制御するように構
成してある。According to the present invention, the vertical excavation is performed by vertically excavating the ground by the rotary excavator (1) and sinking the cylindrical structure (W) within the excavation range as the excavation proceeds. In the device, the rotary drilling device (1) is a tubular structure (W).
It has a rotary drive part (2) arranged inside and is supported by a tubular structure (W) by support members (5, 6), and an elevating jack (7) is provided on the outer peripheral part of the tubular structure (W). ) Is provided, the lifting jack (7) is composed of two hydraulic jacks, and a pair of rods (9) is connected to the base (8) so that the cylinder (10) can be raised and lowered. The cylinders (10) are connected to each other by a connecting member (11), and a guide rod (12) is erected on the base (8) so that the connecting member (11) moves up and down. The tip of the rod (12) is connected to a connecting member (14) connected to the tips of legs (13) standing on the base (8), and a hydraulic jack (16) is attached to the base (8). A pin (15A) for advancing and retreating is provided, and another pin (15) for advancing and retracting is similarly provided on the connecting member (11). ) Is provided, and the cylindrical structure (W) is provided with a support member that supports the pins (15A, 15B), and the cylindrical structure (W) and the rotary excavator (1) sink due to their own weight. The cylindrical structure (W) is controlled by the lifting jack (7) to control its sinking.
【００１０】[0010]
【００１１】[0011]
【００１２】[0012]
【００１３】筒状構造物をウエルとし、回転掘削装置に
より掘削した掘削孔にウエルを順次沈下して立坑を構築
するのに、本発明に係る工法は好適に採用される。The method according to the present invention is preferably used for constructing a vertical shaft by using a tubular structure as a well and successively sinking the well into a drill hole drilled by a rotary drilling device.
【００１４】また、筒状構造物は、中空杭であってもよ
く、ＰＣ杭又は鋼管杭が採用される。筒状構造物の断面
形状は、円形に限らず四角形のものであっても良い。Further, the tubular structure may be a hollow pile, and a PC pile or a steel pipe pile is adopted. The cross-sectional shape of the tubular structure is not limited to the circular shape and may be a quadrangular shape.
【００１５】回転掘削装置で全面掘削することにより、
筒状構造物の沈下抵抗が大幅に軽減されるため、大がか
りな圧入反力を確保する必要がなくなる。By excavating the entire surface with a rotary excavator,
Since the sinking resistance of the tubular structure is greatly reduced, it is not necessary to secure a large press-fit reaction force.
【００１６】また、全面掘削に必要な掘進推力及び回転
力等の掘削反力は、筒状構造物及び回転掘削装置の自重
と筒状構造物の周面摩擦で確保され、掘削反力を確保す
るための大型クレーンや反力杭等が必要なくなる。Further, the excavation reaction force such as the thrust force and the rotational force necessary for the entire surface excavation is secured by the self-weight of the tubular structure and the rotary excavator and the circumferential friction of the tubular structure, and the excavation reaction force is secured. It eliminates the need for large cranes or reaction piles to do so.
【００１７】また、筒状構造物は、筒状構造物及び回転
掘削装置の自重で沈下し、昇降ジャッキにより筒状構造
物の沈下が制御され、筒状構造物による周面摩擦が確保
されない場合でも、回転掘削装置の回転反力等を支える
ことができる。In the case where the tubular structure sinks due to its own weight of the tubular structure and the rotary excavator and the lifting jack controls the sinking of the tubular structure, the circumferential friction of the tubular structure cannot be secured. However, the rotation reaction force of the rotary excavator can be supported.
【００１８】[0018]
【発明の実施の形態】回転掘削装置により地中を垂直に
掘削し、掘削に連れて掘削孔内に筒状構造物を沈下する
立型掘進工法において、筒状構造物がウエルであって、
立坑を構築する場合を例に挙げ、本発明の実施例を説明
する。BEST MODE FOR CARRYING OUT THE INVENTION In a vertical excavation method of vertically excavating the ground by a rotary excavator and sinking a cylindrical structure in an excavation hole during excavation, the cylindrical structure is a well,
An example of the present invention will be described by taking the case of constructing a vertical shaft as an example.
【００１９】図１及び図２において、回転掘削装置１に
より、立坑を構築する地中を垂直に全面掘削する。掘削
土砂は、従来の態様にしたがいケーシングパイプ４を経
て地上に排出する。In FIGS. 1 and 2, the rotary excavator 1 vertically excavates the entire surface of the underground where a vertical shaft is constructed. The excavated earth and sand are discharged to the ground through the casing pipe 4 according to the conventional manner.
【００２０】掘削装置１は、回転駆動部２をウエルＷ内
に配置し、図２に示すように支持部材５、６によりウエ
ルＷに連結し、ウエルＷで支持する。また、掘削具の回
収のため、掘削翼３はケーシンパイプ４の上げ下げによ
る折曲げ式とする。In the excavator 1, the rotary drive unit 2 is arranged in the well W, and is connected to the well W by the supporting members 5 and 6 as shown in FIG. Further, in order to collect the excavation tool, the excavation blade 3 is of a bent type by raising and lowering the casein pipe 4.
【００２１】ウエルＷの外周部に昇降ジャッキ７が設置
されており、この昇降ジャッキ７は、通常、９０゜の間
隔を隔てて４基設ける。Elevating jacks 7 are installed on the outer peripheral portion of the well W, and normally four elevating jacks 7 are provided at intervals of 90 °.
【００２２】図３乃至図５は、昇降ジャッキ７の詳細を
示し、昇降ジャッキ７は、油圧ジャッキであって２本で
対をなし、基台８に左右一対のロッド９、９が連結さ
れ、シリンダ１０、１０が昇降するものであり、左右一
対のシリンダ１０、１０は連結部材１１で相互に連結さ
れている。FIGS. 3 to 5 show the details of the lifting jack 7. The lifting jack 7 is a hydraulic jack, and two jacks make a pair, and a pair of left and right rods 9, 9 are connected to a base 8. The cylinders 10 and 10 move up and down, and the pair of left and right cylinders 10 and 10 are connected to each other by a connecting member 11.
【００２３】基台８には、左右一対のガイドロッド１
２、１２が立設されており、ガイドロッド１２、１２の
先端は、基台８に立設された左右一対の脚１３、１３の
先端に設けた連結部材１４で連結されており、ガイドロ
ッド１２、１２でガイドされて、シリンダ１０、１０を
連結している連結部材１１が昇降する。The base 8 has a pair of left and right guide rods 1
2 and 12 are erected, and the tip ends of the guide rods 12 and 12 are connected by a connecting member 14 provided at the tips of a pair of left and right legs 13 and 13 erected on the base 8. Guided by 12, 12, the connecting member 11 connecting the cylinders 10, 10 moves up and down.
【００２４】基台８の略中央部には、ピン１５Ａが設け
られており、このピン１５Ａは、図６及び図７に示すよ
うに、油圧ジャッキ１６により進退する。そして、ピン
１５Ａの動きを規制するため、カイド溝１７とカイド溝
１７に係合するピン１８が設けられている。A pin 15A is provided at a substantially central portion of the base 8, and the pin 15A is moved forward and backward by a hydraulic jack 16 as shown in FIGS. Further, in order to restrict the movement of the pin 15A, a guide groove 17 and a pin 18 that engages with the guide groove 17 are provided.
【００２５】また、シリンダ１０、１０を連結している
連結部材１１の略中央部にも、同様なピン１５Ｂが設け
られている。A similar pin 15B is also provided at the substantially central portion of the connecting member 11 connecting the cylinders 10 and 10.
【００２６】ピン１５Ａ、１５Ｂは、断面四角形のもの
であって、ウエルＷには図８の展開図及び図９の断面図
に示すようにピン１５Ａ、１５Ｂの断面形状に対応した
四角形の孔Ｈが内外両面から穿設されており、ピン１５
Ａまたは１５Ｂが挿入されてウエルＷが支持されてい
る。なお、孔Ｈに代えピン１５Ａ、１５Ｂを支持する支
持部材であってもよい。The pins 15A and 15B have a quadrangular cross section, and the well W has a quadrangular hole H corresponding to the cross sectional shape of the pins 15A and 15B as shown in the developed view of FIG. 8 and the cross sectional view of FIG. Is drilled from both inside and outside, and pin 15
Well W is supported by inserting A or 15B. Instead of the hole H, a support member that supports the pins 15A and 15B may be used.
【００２７】その他、図１及び図２において、１９は昇
降ジャッキを設置するソイルモルタル、２０は作業足
場、２１はバルブユニット、２２はクローラークレー
ン、２３はセグメント組立を示す。In addition, in FIGS. 1 and 2, 19 is a soil mortar for installing a lifting jack, 20 is a work scaffold, 21 is a valve unit, 22 is a crawler crane, and 23 is a segment assembly.
【００２８】次ぎに、回転掘削装置で掘削した掘削孔内
にウエルを沈下して立坑を構築する場合を例に挙げ、作
業手順について説明する。Next, the working procedure will be described, taking as an example the case where a well is submerged in a borehole excavated by a rotary excavator to construct a vertical shaft.
【００２９】図１及び図２において、ウエルＷ内に回転
掘削装置１の回転駆動部２を配置して回転掘削装置１を
ウエルＷで支持し、回転掘削装置１により地中を垂直に
全面掘削する。1 and 2, the rotary drive unit 2 of the rotary excavator 1 is arranged in the well W to support the rotary excavator 1 with the well W, and the rotary excavator 1 excavates the entire surface of the ground vertically. To do.
【００３０】全面掘削することで、ウエルＷの沈下を抑
制している刃口抵抗を除去し、これにより沈下抵抗が大
幅に軽減されるため、大がかりな圧入反力を確保する必
要がなくなる。By excavating the entire surface, the cutting edge resistance that suppresses the sinking of the well W is removed, and the sinking resistance is greatly reduced. Therefore, it is not necessary to secure a large press-fitting reaction force.
【００３１】全面掘削に必要な掘進推力及び回転力等の
掘削反力は、ウエルＷ及び回転掘削装置１の自重とウエ
ルＷの周面摩擦で確保される。これにより、掘削反力を
確保するための大型クレーンや反力杭等が不要となり、
それに伴い広大な作業スペースの確保も必要がなくな
る。Excavation reaction forces such as a thrust force and a rotational force necessary for the entire surface excavation are secured by the weight of the well W and the rotary excavator 1 and the peripheral friction of the well W. This eliminates the need for large cranes or reaction piles to secure the excavation reaction force.
As a result, there is no need to secure a vast work space.
【００３２】昇降ジャッキ側のピン１５Ｂを油圧ジャッ
キ１６により突出させ、ピン１５ＢをウエルＷに形成し
た孔Ｈに挿入し、ウエルＷを昇降ジャッキ７で支持す
る。The pin 15B on the lifting jack side is projected by the hydraulic jack 16, the pin 15B is inserted into the hole H formed in the well W, and the well W is supported by the lifting jack 7.
【００３３】この状態で、昇降ジャッキ７をストローク
してウエルＷを沈下させる。昇降ジャッキ７の１ストロ
ークで、ウエルＷは１ｍ降下する。In this state, the lifting jack 7 is stroked to sink the well W. One stroke of the lifting jack 7 lowers the well W by 1 m.
【００３４】ウエルＷの沈下は、ウエルＷの自重とウエ
ルＷで支持した回転掘削装置１の自重で行われ、沈下の
制御は、昇降ジャッキ７で行う。昇降ジャッキ７は、ウ
エルＷの周面摩擦が確保できない場合、回転掘削装置１
の回転反力を支えることが可能である。The sinking of the well W is performed by the weight of the well W and the weight of the rotary excavator 1 supported by the well W, and the sinking is controlled by the lifting jack 7. The lifting jack 7 uses the rotary excavator 1 when the frictional surface of the well W cannot be secured.
It is possible to support the rotational reaction force of.
【００３５】昇降ジャッキ７がストローク・エンドに至
ったら、ウエルＷの外周部に設けた固定ピン１５Ａを油
圧ジャッキ１６で突出させて、ピン１５ＡをウエルＷに
形成した孔Ｈに挿入し、ウエルＷを固定ピン１５Ａで支
持する。When the lifting jack 7 reaches the stroke end, the fixing pin 15A provided on the outer peripheral portion of the well W is projected by the hydraulic jack 16 and the pin 15A is inserted into the hole H formed in the well W, so that the well W Is supported by the fixing pin 15A.
【００３６】次いで、昇降ジャッキ側のピン１５Ｂを後
退させて、ウエルＷの孔Ｈから抜き、昇降ジャッキ７を
初期位置に復帰させて、再び、昇降ジャッキ側のピン１
５Ｂを突出させて、ピン１５ＢをウエルＷに形成した孔
Ｈに挿入することで、ウエルＷを昇降ジャッキ７で支持
し、固定ピン１５Ａを後退させて、回転掘削装置１を盛
り替える。Then, the pin 15B on the lifting jack side is retracted, pulled out from the hole H of the well W, the lifting jack 7 is returned to the initial position, and the pin 1 on the lifting jack side is again provided.
By projecting 5B and inserting the pin 15B into the hole H formed in the well W, the well W is supported by the lifting jack 7 and the fixed pin 15A is retracted, and the rotary excavator 1 is refilled.
【００３７】次いで、昇降ジャッキ７をストロークして
ウエルＷを沈下させる。これにより、ウエルＷは計２ｍ
降下する。ウエルＷが２ｍ降下したら、地上部で構築し
たウエルＷをクローラ・クレーン２２で吊り上げウエル
Ｗの継ぎ足しを行う。Then, the lifting jack 7 is stroked to sink the well W. As a result, the well W has a total length of 2 m.
To descend. When the well W descends by 2 m, the well W constructed on the ground is lifted by the crawler crane 22 to replenish the well W.
【００３８】以後、同様の操作を繰り返して、ウエルを
掘削孔に順次沈下させ、立坑を構築する。Thereafter, the same operation is repeated to successively sink the wells into the excavation holes to construct a vertical shaft.
【００３９】[0039]
【発明の効果】本発明は、回転掘削装置で全面掘削する
ものであるので、ウエル等の筒状構造物の沈下抵抗が大
幅に軽減され、大がかりな圧入反力を確保する必要がな
い。According to the present invention, since the entire surface is excavated by the rotary excavator, the sinking resistance of a tubular structure such as a well is significantly reduced, and it is not necessary to secure a large press-fitting reaction force.
【００４０】また、全面掘削に必要な掘進推力及び回転
力等の掘削反力は、筒状構造物及び回転掘削装置の自重
と筒状構造物の周面摩擦で確保され、掘削反力を確保す
るための大型クレーンや反力杭等が必要なく、且つ、そ
れに伴う広大な作業スペースも不要となる。Further, the excavation reaction force such as the thrust force and the rotational force necessary for the entire surface excavation is secured by the self-weight of the tubular structure and the rotary excavator and the circumferential friction of the tubular structure, and the excavation reaction force is secured. There is no need for a large crane or a reaction pile to do so, and a vast work space associated therewith is also unnecessary.
【００４１】また、筒状構造物は、筒状構造物及び回転
掘削装置の自重で沈下し、昇降ジャッキにより筒状構造
物の沈下が制御され、筒状構造物による周面摩擦が確保
されない場合でも、回転掘削装置の回転反力等を支える
ことができ、更には、筒状構造物が一瞬に沈下する等の
不測の事態を起こさない。In the case where the tubular structure sinks due to the weight of the tubular structure and the rotary excavator and the sinking of the tubular structure is controlled by the elevating jack, the circumferential friction due to the tubular structure cannot be secured. However, it is possible to support the rotational reaction force of the rotary excavator and the like, and furthermore, the unexpected situation such as the cylindrical structure sinking in a moment does not occur.
【００４２】また、掘削に連れて掘削孔内にウエル等の
筒状構造物を推進して、孔壁をウエル等の筒状構造物で
保持するものであるので、崩落の危険が大幅に低減す
る。In addition, since a tubular structure such as a well is propelled into the excavation hole during excavation and the hole wall is held by the tubular structure such as the well, the risk of collapse is greatly reduced. To do.
【００４３】また、本発明は、筒状構造物の断面形状は
円形のものに限らず、断面四角形のものにも実施でき、
筒状構造物の推進を無人で実施することができて、省力
化及び安全性を図ることができる。Further, the present invention can be carried out not only when the cross-sectional shape of the cylindrical structure is circular, but also when the cross-sectional shape is square.
The cylindrical structure can be promoted unattended, and labor saving and safety can be achieved.
【図１】立坑構築に本発明を実施した全体側面図。FIG. 1 is an overall side view in which the present invention is applied to construct a vertical shaft.
【図２】要部の拡大側面図。FIG. 2 is an enlarged side view of a main part.
【図３】昇降ジャッキの正面図。FIG. 3 is a front view of the lifting jack.
【図４】昇降ジャッキの平面図。FIG. 4 is a plan view of the lifting jack.
【図５】昇降ジャッキの側面図。FIG. 5 is a side view of the lifting jack.
【図６】図３のＡーＡ線断面図。6 is a sectional view taken along the line AA of FIG.
【図７】図６の平面図。FIG. 7 is a plan view of FIG.
【図８】ウエルの展開図。FIG. 8 is a developed view of a well.
【図９】図８のＢ−Ｂ線断面図。9 is a sectional view taken along line BB of FIG.
１・・・回転掘削装置 ２・・・回転駆動部 ３・・・掘削翼 ４・・・ケーシングパイプ ５・・・支持部材 ６・・・支持部材 ７・・・昇降ジャッキ ８・・・基台 ９・・・ロッド １０・・・シリンダ １１・・・連結部材 １２・・・ガイドロッド １３・・・脚 １４・・・連結部材 １５・・・ピン １６・・・油圧ジャッキ １７・・・溝 １８・・・ピン １９・・・ソイルモルタル ２０・・・作業足場 ２１・・・バルブユニット ２２・・・クローラークレーン ２３・・・セグメント組立 1 ... Rotary drilling equipment 2 ... Rotation drive 3 ... Excavation wing 4 ... Casing pipe 5 ... Support member 6 ... Support member 7 ... Lifting jack 8: Base 9 ... Rod 10 ... Cylinder 11 ... Connecting member 12 ... Guide rod 13 ... legs 14 ... Connection member 15-pin 16 ... Hydraulic jack 17 ... Groove 18-pin 19 ... Soil mortar 20 ... Working scaffold 21 ... Valve unit 22 ... Crawler crane 23 ... Segment assembly
───────────────────────────────────────────────────── フロントページの続き (72)発明者 竹 内 聡 東京都港区元赤坂一丁目２番７号 鹿島 建設株式会社内 (72)発明者 加 藤 勝 之 東京都港区元赤坂一丁目３番８号 鹿島 建設株式会社東京支店内 (72)発明者 寺 田 憲 靖 東京都港区元赤坂一丁目３番８号 鹿島 建設株式会社東京支店内 (72)発明者 岡 直 彦 東京都港区元赤坂一丁目３番８号 鹿島 建設株式会社東京支店内 (56)参考文献 特開 平10−102975（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) E21D 1/03 - 1/06 E21D 5/04 - 5/11 E21B 7/00 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Satoshi Takeuchi 1-2-7 Moto-Akasaka, Minato-ku, Tokyo Kashima Construction Co., Ltd. (72) Inventor Katsuyuki Kato 1-3, Moto-Akasaka, Minato-ku, Tokyo No. 8 Kashima Construction Co., Ltd. in Tokyo branch (72) Inventor Ken Terada Yasushi Yasushi Moto Akasaka 1-3-8 Kashima Construction Co., Ltd. Tokyo branch (72) Inventor Naohiko Oka Minato-ku, Tokyo Former Akasaka 1-3-8 Kashima Construction Co., Ltd. Tokyo Branch (56) Reference JP-A-10-102975 (JP, A) (58) Fields investigated (Int.Cl. 7 , DB name) E21D 1 / 03-1/06 E21D 5/04-5/11 E21B 7/00
Claims (4)
掘削し、掘進に連れて掘削範囲に筒状構造物（Ｗ）を沈
下させる立型掘進装置において、前記回転掘削装置
（１）は筒状構造物（Ｗ）内に配置された回転駆動部
（２）を有して支持部材（５、６）で筒状構造物（Ｗ）
に支持され、筒状構造物（Ｗ）の外周部には昇降ジャッ
キ（７）が設けられ、昇降ジャッキ（７）は２本の油圧
ジャッキよりなり、基台（８）には１対のロッド（９）
が連結されてシリンダ（１０）が昇降するようになって
おり、それらのシリンダ（１０）は連結部材（１１）で
相互に連結されており、該基台（８）にはガイドロッド
（１２）が立設され、連結部材（１１）が昇降するよう
に該ガイドロッド（１２）の先端は基台（８）に立設さ
れた脚（１３）の先端に連結された連結部材（１４）に
連結され、そして基台（８）には油圧ジャッキ（１６）
で進退するピン（１５Ａ）が設けられ、また前記連結部
材（１１）には同様に進退する別のピン（１５Ｂ）が設
けられ、そして筒状構造物（Ｗ）には前記各ピン（１５
Ａ、１５Ｂ）を支持する支持部材が設けられ、筒状構造
物（Ｗ）及び回転掘削装置（１）の自重で沈下する筒状
構造物（Ｗ）を前記昇降ジャッキ（７）でその沈下を制
御するように構成したことを特徴とする立型掘進装置。1. A vertical excavation device for vertically excavating the ground by a rotary excavation device (1) and sinking a cylindrical structure (W) in the excavation range as the excavation proceeds. Has a rotation driving part (2) disposed in the tubular structure (W) and is a support member (5, 6) with the tubular structure (W).
Is supported by a cylindrical structure (W), and an elevating jack (7) is provided on the outer peripheral portion of the cylindrical structure (W). The elevating jack (7) is composed of two hydraulic jacks, and a base (8) has a pair of rods. (9)
Are connected to each other so that the cylinder (10) can be moved up and down. The cylinders (10) are connected to each other by a connecting member (11), and a guide rod (12) is attached to the base (8). And the tip of the guide rod (12) is connected to the connecting member (14) connected to the ends of the legs (13) standing on the base (8) so that the connecting member (11) moves up and down. Connected and hydraulic jack (16) on base (8)
Is provided with a pin (15A) that advances and retreats, and the connecting member (11) is provided with another pin (15B) that also advances and retreats, and the cylindrical structure (W) has the pins (15A).
A, 15B) is provided with a supporting member, and the cylindrical structure (W) and the cylindrical structure (W) that sinks due to its own weight of the rotary excavator (1) are pushed down by the lifting jack (7). A vertical excavation device characterized by being configured to control.
部材としてその内外面に前記ピンを挿入する孔を複数個
設けていることを特徴とする請求項１に記載の立型掘進
装置。2. The vertical excavation according to claim 1, wherein the cylindrical structure is provided with a plurality of holes for inserting the pins on its inner and outer surfaces as a support member for supporting the upright pins. apparatus.
ることを特徴とする請求項１又は２に記載の立型掘進装
置。3. The vertical excavation device according to claim 1, wherein the tubular structure is a well that constructs a vertical shaft.
する請求項１又は２に記載の立型掘進装置。4. The vertical excavation device according to claim 1, wherein the tubular structure is a hollow pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10886899A JP3396025B2 (en) | 1999-04-16 | 1999-04-16 | Vertical excavation method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10886899A JP3396025B2 (en) | 1999-04-16 | 1999-04-16 | Vertical excavation method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000297589A JP2000297589A (en) | 2000-10-24 |
| JP3396025B2 true JP3396025B2 (en) | 2003-04-14 |
Family
ID=14495634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10886899A Expired - Fee Related JP3396025B2 (en) | 1999-04-16 | 1999-04-16 | Vertical excavation method and device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3396025B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA3160587A1 (en) * | 2019-12-04 | 2021-06-10 | Patrick RENNKAMP | Device for sinking a vertical borehole |
-
1999
- 1999-04-16 JP JP10886899A patent/JP3396025B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2000297589A (en) | 2000-10-24 |
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