JPH02304194A - Excavator for reverse construction method - Google Patents
Excavator for reverse construction methodInfo
- Publication number
- JPH02304194A JPH02304194A JP1125193A JP12519389A JPH02304194A JP H02304194 A JPH02304194 A JP H02304194A JP 1125193 A JP1125193 A JP 1125193A JP 12519389 A JP12519389 A JP 12519389A JP H02304194 A JPH02304194 A JP H02304194A
- Authority
- JP
- Japan
- Prior art keywords
- excavation
- drill pipes
- drill
- construction method
- excavator
- 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.)
- Granted
Links
- 238000010276 construction Methods 0.000 title claims description 11
- 239000002002 slurry Substances 0.000 claims abstract description 7
- 238000009412 basement excavation Methods 0.000 abstract description 10
- 238000005553 drilling Methods 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000002706 hydrostatic effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Abstract
Description
【発明の詳細な説明】 ａ、 産業上の利用分野 本発明は、リバース工法用掘削機の改良に関する。[Detailed description of the invention] a. Industrial application field The present invention relates to an improvement of an excavator for reverse construction method.
ｂ、 従来の技術
リバース工法は、孔壁を適当な静水圧で押え、孔内から
ドリルパイプを通って、水を強制循環により循環させな
がら連続的に掘削作業を行なうことができ、あらゆる土
質に対してほとんどの場合、安定液を必要とせず、しか
も掘削ビットを１回ごとに上げ下げする必要もなく、ド
リルパイプの継足しのみで長深尺の掘削に適し、無騒音
、無振動工法であるため、従来、基礎杭などの施工に広
く用いられている。b. Conventional technology Reverse construction method can perform continuous excavation work while holding down the hole wall with appropriate hydrostatic pressure and forcing water to circulate from inside the hole through the drill pipe. On the other hand, in most cases, there is no need for stabilizing fluid, no need to raise and lower the drilling bit each time, and it is suitable for long and deep drilling by simply adding drill pipes, and is a noiseless and vibrationless construction method. Therefore, it has been widely used in the construction of foundation piles, etc.
Ｃ９発明が解決しようとする課題
しかし、現在用いられているリバース掘削機では、削孔
深度が深い場合、掘削稼動時間に占める非削孔時間の比
率が、削孔径により差は有るものの、ドリルパイプの接
続、サクションポンプの運転等に４０〜５０％を占める
状況にあり、この短縮が一つの課題であった。C9 Problems to be solved by the invention However, with currently used reverse drilling machines, when the drilling depth is deep, the ratio of non-drilling time to the drilling operation time varies depending on the drilling diameter, but the drill pipe connection, operation of suction pumps, etc. account for 40 to 50% of the total cost, and reducing this was an issue.
ｄ、 課題を解決するための手段
本発明は、上記課題を解決しようとするもので、その要
旨は、複数体のドリルパイプをテレスコープ式に嵌合し
、最内側のドリルパイプの下部にスラリーポンプ、ウィ
ングビットおよびその駆動装置を取付け、′これら装置
一式を地上に設けたウィンチから延びるワイヤによって
支持したことを特徴とするリバース工法用掘削機にある
。d. Means for Solving the Problems The present invention attempts to solve the above problems, and its gist is to fit a plurality of drill pipes in a telescopic manner, and to apply slurry to the lower part of the innermost drill pipe. This is an excavator for reverse construction, characterized in that a pump, a wing bit, and a driving device thereof are attached, and the set of these devices is supported by a wire extending from a winch installed on the ground.
ｅ、 作用
テレスコープ式に嵌合された複数体のドリルパイプを順
次に伸ばしながら削孔する。それによって、ドリルパイ
プの接続作業を必要とせずに、例えば、５０ｍ以上の深
度まで掘削できる。e. Drilling holes while sequentially extending multiple drill pipes fitted in a telescopic manner. Thereby, it is possible to excavate to a depth of 50 m or more, for example, without requiring a drill pipe connection operation.
ｆ、 実施例
第１図と第２図において、１はテレスコープ式に嵌合さ
れたドリルパイプであり、複数体のパイプ１＝、 ｌ
ｚ−’−・１１１からなる。f, Embodiment In FIGS. 1 and 2, 1 is a drill pipe fitted in a telescopic manner, and a plurality of pipes 1=, l
It consists of z-'-・111.
これらパイプ群は長さ方向には順次に繰出されるが、回
転方向には回動できないよう、形成されている。Although these pipe groups are sequentially paid out in the length direction, they are formed so that they cannot be rotated in the rotation direction.
図示のドリルパイプは３本のパイプからなり、各パイプ
は例えば１０ｍの長さをもつ。The illustrated drill pipe consists of three pipes, each pipe having a length of, for example, 10 m.
２は最内側のドリルパイプ１７の下端に取付けられた水
中スラリーポンプ、３は水中減速ギアモータである。2 is a submersible slurry pump attached to the lower end of the innermost drill pipe 17, and 3 is a submersible reduction gear motor.
４はギアモータ３の両側に配設されたアジャスタブルガ
イドであり、ギアモータ３を削孔内に適当位置にガイド
し、固定するためのものである。Adjustable guides 4 are arranged on both sides of the gear motor 3, and are used to guide and fix the gear motor 3 at an appropriate position within the drilled hole.
５はギヤモータ３に連結されたウィングビット、６は該
ウィングビット５の下端に設けられた吸泥孔であり、読
札は、水中スラリーポンプ２、ドリルパイプ１中を通っ
て地上の排水管７に連通している。5 is a wing bit connected to the gear motor 3; 6 is a suction hole provided at the lower end of the wing bit 5; is connected to.
８．８は地上に設けられたウィンチであり、該ウィンチ
によって巻上げ又は巻下げられるワイヤ９．９の下端が
、水中スラリーポンプ２の支持枠１０の上部に取付けら
れている。8.8 is a winch installed on the ground, and the lower end of a wire 9.9 that is hoisted up or lowered by the winch is attached to the upper part of the support frame 10 of the submersible slurry pump 2.
１１はウィンチ８，８の支持枠、１２は水の供給管、１
３はスタンドパイプ、１４は制御盤である。11 is a support frame for the winches 8, 8, 12 is a water supply pipe, 1
3 is a stand pipe, and 14 is a control panel.
上記装置を用い、リバース工法を行なう場合は、まず、
常法に従ってスタンドパイプ１３を建込み、ハンマーグ
ラブ（図示せず）で先掘りとしたのち、上記掘削機を杭
芯に合わせて垂直に配置し、アジャスタブルガイド４に
よって位置を決めてギヤモータ３を駆動し、ウイングビ
・ノド５で孔底を掘削する。When performing the reverse construction method using the above equipment, first,
After erecting the stand pipe 13 according to the usual method and pre-drilling with a hammer grab (not shown), the excavator is placed vertically along the pile core, the position is determined by the adjustable guide 4, and the gear motor 3 is driven. Then, the bottom of the hole is excavated with Wing Bee Nod 5.
それとともに、供給管１２から水を孔内に供給し、水中
スラリーポンプ２によって、掘削した土砂を水とともに
吸泥孔６から吸い上げ、ドリルパイプ１中を通って、排
水管７から排出する。At the same time, water is supplied into the hole from the supply pipe 12, and the submersible slurry pump 2 sucks up the excavated earth and sand together with water from the suction hole 6, passes through the drill pipe 1, and discharges it from the drain pipe 7.
水と土砂は、その後、分別され、水は再度、供給管１２
から孔内に供給される。The water and sediment are then separated, and the water is returned to the supply pipe 12.
is supplied into the hole from
こうして、ある程度の深さ削孔したならば、ウィンチ８
からワイヤを巻下げ、アジャスタブルガイド４を新たな
位置に移し、掘削する。In this way, once the hole has been drilled to a certain depth, the winch 8
The wire is lowered from the hole, the adjustable guide 4 is moved to a new position, and excavation is started.
以上の作業をくり返しながら削孔するが、その間、ドリ
ルパイプ１はテレスコープ式に伸長し、掘削深度に対応
する。The above operations are repeated to drill a hole, during which time the drill pipe 1 is extended in a telescopic manner to correspond to the depth of excavation.
かくして、図示の実施例の場合、水中スラリーポンプ２
、ギヤモータ３およびウィングビット５を含むドリル本
体の長さを約５ｍとすると、約３５ｍの深度まで、ドリ
ルパイプの接続作業を行なうことなく、削孔することが
できる。Thus, in the illustrated embodiment, submersible slurry pump 2
If the length of the drill body including the gear motor 3 and wing bit 5 is about 5 m, it is possible to drill a hole to a depth of about 35 m without connecting a drill pipe.
削孔後の鉄筋籠建込み、トレミー管建込み、スライム処
理、コンクリート打設、スタンドパイプ引抜きなどの各
工程は、従来のリバース工法と変わりない。After drilling, the processes such as reinforcing bar cage construction, tremie pipe construction, slime treatment, concrete pouring, and stand pipe extraction are no different from the conventional reverse construction method.
ｇ、 発明の効果
一５＝
本発明によれば、ドリルパイプ接続作業なしに連続削孔
ができ、削孔深度は５０ｍ以上を容易に削孔できるとい
う効果がある。g. Effects of the Invention 5= According to the present invention, continuous drilling can be performed without connecting a drill pipe, and drilling depths of 50 m or more can be easily achieved.
第１図は掘削開始前の本発明装置の立面図、第２図は掘
削中の本発明装置の立面図である。FIG. 1 is an elevational view of the apparatus of the present invention before the start of excavation, and FIG. 2 is an elevational view of the apparatus of the present invention during excavation.
Claims (1)
側のドリルパイプの下部にスラリーポンプ、ウィングビ
ットおよびその駆動装置を取付け、これら装置一式を地
上に設けたウィンチから延びるワイヤによって支持した
ことを特徴とするリバース工法用掘削機。A plurality of drill pipes are fitted in a telescopic manner, a slurry pump, a wing bit, and its driving device are attached to the bottom of the innermost drill pipe, and this set of devices is supported by a wire extending from a winch installed on the ground. An excavator for reverse construction method featuring:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1125193A JPH02304194A (en) | 1989-05-18 | 1989-05-18 | Excavator for reverse construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1125193A JPH02304194A (en) | 1989-05-18 | 1989-05-18 | Excavator for reverse construction method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02304194A true JPH02304194A (en) | 1990-12-17 |
| JPH0565680B2 JPH0565680B2 (en) | 1993-09-20 |
Family
ID=14904222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1125193A Granted JPH02304194A (en) | 1989-05-18 | 1989-05-18 | Excavator for reverse construction method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02304194A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016113754A (en) * | 2014-12-11 | 2016-06-23 | 株式会社菅原建設 | Drilling machine and drilling method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5654316A (en) * | 1979-10-11 | 1981-05-14 | Fujita Corp | Detector for concrete ceiling end level |
| JPS5947740U (en) * | 1982-09-18 | 1984-03-29 | 鹿島建設株式会社 | Pile hole internal observation device for on-site constructed piles |
| JPS6137436B2 (en) * | 1978-12-15 | 1986-08-23 | Hitachi Kenki Kk |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5947740B2 (en) * | 1977-04-20 | 1984-11-21 | 東レ株式会社 | Glue-free weaving method |
| JPS6137436A (en) * | 1984-07-31 | 1986-02-22 | Canon Inc | Cover for recording head |
-
1989
- 1989-05-18 JP JP1125193A patent/JPH02304194A/en active Granted
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6137436B2 (en) * | 1978-12-15 | 1986-08-23 | Hitachi Kenki Kk | |
| JPS5654316A (en) * | 1979-10-11 | 1981-05-14 | Fujita Corp | Detector for concrete ceiling end level |
| JPS5947740U (en) * | 1982-09-18 | 1984-03-29 | 鹿島建設株式会社 | Pile hole internal observation device for on-site constructed piles |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016113754A (en) * | 2014-12-11 | 2016-06-23 | 株式会社菅原建設 | Drilling machine and drilling method |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0565680B2 (en) | 1993-09-20 |
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