JPH079090B2 - Ground improvement device with bypass pipe or T-shaped pipe containing steel balls - Google Patents
Ground improvement device with bypass pipe or T-shaped pipe containing steel ballsInfo
- Publication number
- JPH079090B2 JPH079090B2 JP1171635A JP17163589A JPH079090B2 JP H079090 B2 JPH079090 B2 JP H079090B2 JP 1171635 A JP1171635 A JP 1171635A JP 17163589 A JP17163589 A JP 17163589A JP H079090 B2 JPH079090 B2 JP H079090B2
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- pipe
- rod
- ground improvement
- feeding hose
- 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 - Lifetime
Links
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Description
【発明の詳細な説明】 [産業上の利用分野] 本発明は地中に硬化材を注入する地盤改良工法において
ボーリングロッド先端に用いる制御弁及びそれを用いる
方法に関する。TECHNICAL FIELD The present invention relates to a control valve used at the tip of a boring rod in a ground improvement method for injecting a hardening material into the ground, and a method of using the control valve.
[従来の技術] 従来、地中に薬液を注入する地盤改良工法には、ボーリ
ングマシーンによりロッドを所定の深さまで挿入し、ス
イベルを介して硬化材を圧送し、地盤中に噴射注入しな
がらロッドを回転上昇するロッド注入法がある。この注
入法においては、ボーリングロッドを所定の深度まで挿
入する際には、ロッド先端に設けられた掘削刃により掘
削しつつ下方噴射孔から水を噴出させることによりロッ
ドの挿入空間を確保し、所定深度に達した時に一旦噴出
を中断し、スイベルを取り外した後ロッド上端から鋼球
を入れて落下させることにより該下方噴射孔を塞がし
め、その後、ロッドを回転上昇させながら、高圧にて硬
化材を圧送し、ロッド先端の側方噴射孔から硬化材を噴
出させることにより地盤中に注入する方法が行われてい
る。[Prior Art] Conventionally, in the ground improvement method of injecting a chemical solution into the ground, a rod is inserted to a predetermined depth by a boring machine, a hardening material is pressure-fed through a swivel, and the rod is injected and injected into the ground. There is a rod injection method of rotating and raising. In this injection method, when the boring rod is inserted to a predetermined depth, the rod insertion space is secured by ejecting water from the lower injection hole while excavating by the excavating blade provided at the rod tip. When the depth is reached, the jetting is temporarily stopped, the swivel is removed, the steel ball is dropped from the upper end of the rod to drop it, and then the lower jetting hole is closed. A method is used in which a material is pressure-fed and a hardened material is injected from a lateral injection hole at the tip of a rod to inject it into the ground.
[発明が解決しようとする課題] 如上の工程においては、ボーリング工程から硬化材注入
工程に移行する際のスイベル取り外し及び組立作業が不
可欠であるが、この作業が工程全体の中断をもたらすの
みならず、それ自体煩雑であり、また使用するロッドの
長さが所望深度に比して長い場合には、足場を要する高
所の作業となるという欠点を有する。[Problems to be Solved by the Invention] In the above process, swivel removal and assembly work at the time of shifting from the boring process to the hardening material injection process are indispensable, but this work not only causes interruption of the entire process. However, it has a drawback that it is complicated in itself, and if the length of the rod to be used is longer than the desired depth, the work is performed at a high place requiring a scaffold.
本発明は、該作業を簡略化すると共に、足場を必要とせ
ず、地面上においてより安全確実に行うことを目的とす
る。It is an object of the present invention to simplify the work and to perform it more safely and reliably on the ground without requiring a scaffold.
[課題を解決するための手段] 本発明は、下方噴射孔と側方噴射孔とを下端部に有する
ロッド本体を回転上下動機構に連繋させると共に、ロッ
ド上端はスイベル及び圧送ホースを介して高圧スラリー
ポンプに接続してなる地盤改良装置において、鋼球を内
蔵するバイパス管を着脱機構を介して圧送ホースの途中
に並列に接続し、該着脱機構の両側には、圧送ホース側
とバイパス管側のそれぞれにバルブを設けること、また
は、同様の装置において水平方向に固定された管とその
中間に接続され鉛直上方に伸びる枝管とから成るT字管
を着脱機構を介して圧送ホースの途中に直列に接続し、
該水平管には圧力計を設け、該鉛直管にはバルブを2個
設けるとともに、該2個のバルブの間に鋼球を内蔵する
ことを特徴とする地盤改良装置を提供するものである。[Means for Solving the Problems] According to the present invention, a rod main body having a lower injection hole and a side injection hole at the lower end is connected to a rotary up-and-down moving mechanism, and the upper end of the rod has a high pressure through a swivel and a pumping hose. In a ground improvement device connected to a slurry pump, a bypass pipe containing a steel ball is connected in parallel in the middle of a pressure-feeding hose via a detaching mechanism, and the pressure-feeding hose side and the bypass pipe side are provided on both sides of the attaching / detaching mechanism. Or a T-shaped tube consisting of a tube fixed horizontally in the same device and a branch tube connected vertically in the middle and extending vertically upward in a similar device is provided in the middle of the pressure-feeding hose via the attaching / detaching mechanism. Connect in series,
The present invention provides a ground improvement device characterized in that a pressure gauge is provided on the horizontal pipe, two valves are provided on the vertical pipe, and a steel ball is built in between the two valves.
[作用] 本発明は、以上の如く構成されているので、その使用に
あっては、ボーリングロッドが所定の深度に到達した際
に、バルブの開閉操作によりバイパス管またはT字管内
の鋼球を硬化材とともに圧送せしめ、ロッド先端まで移
送し下方噴射孔を圧送圧力により塞ぎ、硬化材を側方噴
射孔からのみ噴出させつつ、ロッドを回転上昇させて施
工することとなる。[Operation] Since the present invention is configured as described above, in use thereof, when the boring rod reaches a predetermined depth, the steel ball in the bypass pipe or the T-shaped pipe is opened and closed by opening and closing the valve. The hardened material is pressure-fed together with the hardened material, is transferred to the tip of the rod, and the lower injection hole is blocked by the pressure-feeding pressure.
[実施例] 以下、図を追って実施例を説明する。第1図の如く注入
ロッド10は、回転上下動機構11により、上下動操作及び
回転操作がなされるべく連繋されている。注入ロッド10
の下部先端には、第2図の如く、側方噴射孔17及び下方
噴射孔16が設けられている。Example An example will be described below with reference to the drawings. As shown in FIG. 1, the injection rod 10 is connected by a rotary vertical movement mechanism 11 so that vertical movement operation and rotation operation can be performed. Injection rod 10
As shown in FIG. 2, a side injection hole 17 and a lower injection hole 16 are provided at the lower tip of the.
注入ロッド10の上部先端は、スイベル12及び圧送ホース
13を介して高圧スラリーポンプ15に接続されている。The top end of the injection rod 10 has a swivel 12 and a pressure hose.
It is connected via a 13 to a high pressure slurry pump 15.
ロッドを地盤中に挿入する際には、水を送りながら掘削
しつつロッドを挿入するが、水はロッド先端の下方噴射
孔16及び側方噴射孔17の双方から噴出される。When inserting the rod into the ground, the rod is inserted while excavating while feeding water, but the water is jetted from both the lower jet hole 16 and the side jet hole 17 at the tip of the rod.
圧送ホース13の途中には、鋼球18の内蔵するバイパス管
14が着脱機構20を介して接続され、該着脱機構20の両側
には、圧送ホース側とバイパス管側それぞれにバルブ19
a、19b、19c、19dが設けられている。ロッドが所定深度
に達した時、硬化材を高圧にて圧送し、バルブ19a、19
b、19c、19dを開くことにより、鋼球18を硬化材と共
に、ロッド先端に移動せしめる。A bypass pipe containing a steel ball 18 is provided in the middle of the pressure-feeding hose 13.
14 are connected to each other through the attaching / detaching mechanism 20, and the valves 19 are provided on both sides of the attaching / detaching mechanism 20 on the pumping hose side and the bypass pipe side, respectively.
a, 19b, 19c and 19d are provided. When the rod reaches a predetermined depth, the hardened material is pumped under high pressure, and the valves 19a, 19
By opening b, 19c, and 19d, the steel ball 18 is moved to the tip of the rod together with the hardening material.
ロッド先端部に移動した鋼球18は第3図の如く下方噴射
孔16を塞ぎ、硬化材により圧送圧力により押し付けられ
る。その結果、硬化材は側方噴射孔からのみ噴出し、ロ
ッドを回転しながら上昇させることにより、地盤中への
硬化材注入が施工される。鋼球がロッド先端に移動した
後の硬化材圧送はバルブ19a、19b、19c、19dを閉じるこ
とにより圧送ホースのみで行う。The steel ball 18 that has moved to the tip of the rod closes the lower injection hole 16 as shown in FIG. 3, and is pressed by the hardening material by the pressure feeding pressure. As a result, the hardening material is ejected only from the side injection holes, and the hardening material is injected into the ground by rotating and raising the rod. After the steel ball has moved to the tip of the rod, the hardening material is pressure-fed by closing the valves 19a, 19b, 19c, and 19d only by the pressure-feeding hose.
いわゆるセメントミルクを硬化材として使用し、圧送圧
力を300kg f/cm2として上記の操作を行ったところ、所
望の効果が得られることが確認された。When so-called cement milk was used as a hardening material and the above-mentioned operation was carried out at a pressure feeding pressure of 300 kg f / cm 2 , it was confirmed that the desired effect was obtained.
第4図は、5つ目のバルブ19eをバイパス管に並列とな
る圧送ホースの部分に設けた実施例を示している。鋼球
18の移送の際、19a、19b、19c、19dの4つのバルブを開
くのみならず、19eを閉めることにより圧送圧力が分散
せずにバイパス管のみに伝達されるためより確実に所望
の結果が得られる。FIG. 4 shows an embodiment in which the fifth valve 19e is provided in the portion of the pressure-feeding hose which is in parallel with the bypass pipe. wrecking ball
At the time of transferring 18, not only the four valves 19a, 19b, 19c and 19d are opened, but also by closing 19e, the pumping pressure is not dispersed and is transmitted only to the bypass pipe, so that the desired result can be more reliably obtained. can get.
第5図は、バイパス管によらずに、T字管25により上記
効果を得る実施例である。該T字管25は、水平管とそれ
に対して枝分かれの形態により接続される鉛直管とから
構成され、該水平管には圧力計21、該鉛直管にはバルブ
23a、23bが設けられ、さらに該2個のバルブ間には鋼球
(24)を内蔵する。FIG. 5 shows an embodiment in which the above-mentioned effect is obtained by the T-shaped pipe 25 without using the bypass pipe. The T-shaped pipe 25 is composed of a horizontal pipe and a vertical pipe connected to the horizontal pipe in a branched manner. The horizontal pipe has a pressure gauge 21 and the vertical pipe has a valve.
23a and 23b are provided, and a steel ball (24) is built in between the two valves.
鋼球24移送にあっては、ポンプ15による水の圧送を中断
し、圧力計21により、水平管内の圧力が十分に下がった
ことを確認してバルブ23bを開く。鋼球24は重みにより
水平管内に落下する。その後バルブ23bを閉じ、硬化材
をポンプ15により圧送し、鋼球24を硬化材とともにロッ
ド先端に移動せしめる。その後の工程はバイパス管の場
合と同様である。T字管は、バイパス管と異なり、圧送
ホースに対して直列に接続されるので分圧の問題は生じ
ない。In transferring the steel balls 24, the pump 15 is stopped from pumping water, and the pressure gauge 21 confirms that the pressure in the horizontal pipe has sufficiently decreased, and the valve 23b is opened. The steel ball 24 falls into the horizontal pipe due to its weight. After that, the valve 23b is closed, and the hardening material is pumped by the pump 15 to move the steel ball 24 together with the hardening material to the tip of the rod. The subsequent steps are the same as in the case of the bypass pipe. Unlike the bypass pipe, the T-shaped pipe is connected in series to the pressure feeding hose, so that the problem of partial pressure does not occur.
[効果] 本発明は如上のごとく比較的単純な構成及び構造にて、
安全確実に硬化材の噴出方向を制御できるという効果を
有する。[Effect] The present invention has a relatively simple configuration and structure as described above.
It has an effect that the ejection direction of the hardened material can be controlled safely and reliably.
また、着脱機構、バルブ等の操作により、本発明に使用
する鋼球、バイパス管、T字管等は繰返し使用できる。Further, the steel ball, the bypass pipe, the T-shaped pipe and the like used in the present invention can be repeatedly used by operating the attaching / detaching mechanism, the valve and the like.
【図面の簡単な説明】 第1図は、バイパス管を有する地盤改良装置の全体、第
2図は、ロッドを地盤に挿入する際のロッド先端部、第
3図はロッドを回転させながら上昇させて地盤中に硬化
材を注入する際のロッド先端部、第4図は、バイパス管
に並列となる圧送ホースの部分にバルブを有する実施
例、第5図は、T字管を有する地盤改良装置を示してい
る。 10……注入ロッド 11……回転上下動機構 12……スイベル 13……圧送ホース 14……バイパス管 15……高圧スラリーポンプ 16……下方噴射孔 17……側方噴射孔 18……鋼球 19a、19b、19c、19d、19e……バルブ 20……着脱機構 21……圧力計 22……安全蓋 23a、23b……バルブ 24……鋼球 25……T字管 26……スタンドBRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is the whole ground improvement apparatus having a bypass pipe, FIG. 2 is the tip of the rod when the rod is inserted into the ground, and FIG. 4 is an embodiment in which a valve is provided at a portion of a pressure-feeding hose which is in parallel with a bypass pipe, and FIG. 5 is a ground improvement device having a T-shaped pipe. Is shown. 10 …… Injection rod 11 …… Rotating vertical movement mechanism 12 …… Swivel 13 …… Pressure feeding hose 14 …… Bypass pipe 15 …… High pressure slurry pump 16 …… Lower injection hole 17 …… Side injection hole 18 …… Steel ball 19a, 19b, 19c, 19d, 19e …… Valve 20 …… Detachable mechanism 21 …… Pressure gauge 22 …… Safety lid 23a, 23b …… Valve 24 …… Steel ball 25 …… Tee tube 26 …… Stand
Claims (3)
るロッド本体を回転上下動機構に連繋させると共に、ロ
ッド上端はスイベル及び圧送ホースを介して高圧スラリ
ーポンプに接続して成る地盤改良装置において、鋼球を
内蔵するバイパス管を着脱機構を介して圧送ホースの途
中に並列に接続し、該着脱機構の両側には、圧送ホース
側とバイパス管側それぞれにバルブを設けることを特徴
とする地盤改良装置。1. A ground comprising a rod main body having a lower injection hole and a side injection hole at its lower end connected to a rotary up-and-down moving mechanism, and an upper end of the rod connected to a high-pressure slurry pump via a swivel and a pressure-feeding hose. In the improved device, a bypass pipe containing a steel ball is connected in parallel in the middle of a pressure-feeding hose via a detaching mechanism, and valves are provided on both sides of the detaching mechanism on the pressure-feeding hose side and the bypass pipe side, respectively. A ground improvement device.
の部分の中間にバルブを設けることを特徴とする請求項
1記載の地盤改良装置。2. The ground improvement device according to claim 1, wherein a valve is provided in the middle of a portion of the pressure-feeding hose which is parallel to the bypass pipe.
るロッド本体を回転上下動機構に連繋させるとともに、
ロッド上端はスイベル及び圧送ホースを介して高圧スラ
リーポンプに接続して成る地盤改良装置において、水平
方向に固定された管とその中間に接続され鉛直上方に伸
びる枝管とから成るT字管を着脱機構を介して圧送ホー
スの途中に直列に接続し、該水平管には圧力計を設け、
該鉛直管にはバルブを2個設けるとともに、該2個のバ
ルブの間に鋼球の内蔵することを特徴とする地盤改良装
置。3. A rod main body having a lower injection hole and a side injection hole at its lower end is connected to a rotary up-and-down moving mechanism, and
In a ground improvement device in which the upper end of the rod is connected to a high-pressure slurry pump through a swivel and a pressure-feeding hose, a T-shaped pipe consisting of a horizontally fixed pipe and a vertically extending branch pipe connected to the pipe is attached and detached. Connected in series in the middle of the pressure-feeding hose via a mechanism, a pressure gauge is provided on the horizontal pipe,
A ground improvement device characterized in that two valves are provided in the vertical pipe, and a steel ball is built in between the two valves.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1171635A JPH079090B2 (en) | 1989-07-03 | 1989-07-03 | Ground improvement device with bypass pipe or T-shaped pipe containing steel balls |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1171635A JPH079090B2 (en) | 1989-07-03 | 1989-07-03 | Ground improvement device with bypass pipe or T-shaped pipe containing steel balls |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0336312A JPH0336312A (en) | 1991-02-18 |
JPH079090B2 true JPH079090B2 (en) | 1995-02-01 |
Family
ID=15926851
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1171635A Expired - Lifetime JPH079090B2 (en) | 1989-07-03 | 1989-07-03 | Ground improvement device with bypass pipe or T-shaped pipe containing steel balls |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH079090B2 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2001303541A (en) * | 2000-04-24 | 2001-10-31 | Onoda Chemico Co Ltd | Injection switching device |
US7949545B1 (en) | 2004-05-03 | 2011-05-24 | The Medical RecordBank, Inc. | Method and apparatus for providing a centralized medical record system |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5226001Y2 (en) * | 1971-09-14 | 1977-06-14 | ||
JPS49121305U (en) * | 1973-02-12 | 1974-10-17 |
-
1989
- 1989-07-03 JP JP1171635A patent/JPH079090B2/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
JPH0336312A (en) | 1991-02-18 |
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