JP3069976B2 - Method of kneading mixed pressure sand and solidifying agent - Google Patents
Method of kneading mixed pressure sand and solidifying agentInfo
- Publication number
- JP3069976B2 JP3069976B2 JP3275353A JP27535391A JP3069976B2 JP 3069976 B2 JP3069976 B2 JP 3069976B2 JP 3275353 A JP3275353 A JP 3275353A JP 27535391 A JP27535391 A JP 27535391A JP 3069976 B2 JP3069976 B2 JP 3069976B2
- Authority
- JP
- Japan
- Prior art keywords
- solidifying agent
- sand
- earth
- soil
- sediment
- 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
- Treatment Of Sludge (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、圧縮空気を使って土砂
を混気圧送する土砂と、土質改良用の固化剤とを混練す
る方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for kneading earth and sand for sending earth and sand at a mixed pressure using compressed air and a solidifying agent for improving the soil quality.
【０００２】[0002]
【従来の技術】従来、土砂と土質改良用の固化剤とをミ
キサー等の混練装置よって予め混練したものを、圧送し
て埋立地へ埋め立てることが行われていた。しかしなが
ら、ミキサー等の混練装置を使用するので、大量に混練
するには限界があり、また、費用も嵩むという問題があ
った。2. Description of the Related Art Heretofore, it has been practiced to knead earth and sand and a solidifying agent for improving soil quality in advance by kneading with a kneading device such as a mixer and to reclaim the land in a landfill. However, since a kneading device such as a mixer is used, there is a limit to kneading in a large amount, and there is a problem that the cost increases.
【０００３】[0003]
【発明の解決しようとする課題】本発明は、前記従来の
問題点を解決するためになされたものであり、ミキサー
等の混練装置を使用することなく、土砂と固化剤とを混
練することができる方法を提供することを解決課題とし
たものである。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and it is possible to knead earth and sand with a solidifying agent without using a kneading device such as a mixer. It is an object of the present invention to provide a method that can be used.
【０００４】[0004]
【課題を解決するための手段】本発明は、土砂プラグの
形成と崩壊とを繰り返す混気圧送により圧送されている
土砂に固化剤を供給し、混気圧送によって圧送される土
砂が土砂プラグの形成と崩壊とを繰り返すことにより土
砂と固化剤とを管路内で混練する混気圧送土砂と固化剤
の混練方法において、管路内に設けた土砂のプラグの検
出値の変化に応じて、固化剤供給装置を運転、停止させ
て圧送中の土砂中に一定の割合で固化剤を供給する混気
圧送土砂と固化剤の混練方法からなる。SUMMARY OF THE INVENTION According to the present invention, a solidifying agent is supplied to sediment which is being pumped by a mixed pressure feed in which formation and collapse of a sediment plug are repeated, and the sediment pumped by the mixed pressure feed is used for forming the plug. in soil and kneading method solidifying agent and the the mixed pressure feed sediment kneading in conduit solidifying agent by repeating the formation and collapse and, detection of the plug of sediment formed in the conduit
Starts and stops the solidifying agent supply device according to the change in output value.
Aeration that supplies a solidifying agent at a fixed rate into the soil being pumped
It consists of a method of kneading pumped earth and solidifying agent .
【０００５】[0005]
【実施例】以下図面を参照して本発明の実施例を説明す
るが、図１はその一実施例における土砂圧送管への固化
剤供給装置の要部断面で示す概略側面図で、図２は図１
のＡ−Ａ′方向の平断面図、そして図３は図２のＢ−
Ｂ′方向の正断面図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a schematic side view showing a cross section of a main part of a solidifying agent supply device for a sediment pressure feeding pipe in one embodiment. And FIG. 2 is FIG.
2 is a plan sectional view taken along the line AA 'of FIG.
It is a front sectional view of B 'direction.
【０００６】含水比の高い粘性土、例えば高濃度浚渫船
から送られる軟泥状の土砂を混気圧送した場合、図５に
示す管路３内の土砂Ｓに対し矢印Ａで示す圧縮空気を供
給すると、図５の管路３の下部に土砂Ｓが堆積し、圧縮
空気Ａが管路３の上部を流れていく状態から、図６のご
とく、堆積した土砂Ｓの上部が波立ってきて、次に、図
７のごとく土砂Ｓが管路３内をふさぎ、プラグをした状
態になり、その結果、土砂Ｓが圧縮空気Ａにより管路３
内に圧送され、さらに再び図５に近い状態に戻って、図
６および図７に示す現象が生じてそれを繰り返し、図８
のように土砂Ｓは管路３内でプラグの形成と崩壊とを繰
り返しながら管路３内を進むので、空気だけが送られて
いる部分と、土砂Ｓが送られている部分とが交互に通過
することになる。しかも土砂Ｓのプラグの長さＬは一定
ではない。When a viscous soil having a high water content, for example, soft muddy soil sent from a high-concentration dredger is sent under mixed pressure, compressed air indicated by an arrow A is supplied to the soil S in the pipe line 3 shown in FIG. From the state where the sediment S accumulates at the lower part of the pipe 3 and the compressed air A flows over the upper part of the pipe 3 in FIG. Then, as shown in FIG. 7, the soil S blocks the inside of the pipeline 3 and becomes plugged. As a result, the soil S is compressed by the compressed air A into the pipeline 3.
8 and returns to a state close to that of FIG. 5 again, and the phenomena shown in FIGS.
As the soil S travels in the pipe 3 while repeatedly forming and collapsing plugs in the pipe 3, the portion where only air is sent and the portion where soil S is sent alternately. Will pass. Moreover, the length L of the plug of the earth and sand S is not constant.
【０００７】そこで、図２において、軟泥状の土砂Ｓを
図８のごとく混気圧送する管路３の途中に、図３に示す
ような渦巻室１を介設し、その渦巻室１内に遠心翼車５
およびその駆動モータ６からなる水中サンドポンプ２を
設けると共に、その水中サンドポンプ２の吸引側に、図
１に示すように逆止弁７を介してホッパー８および、土
質改良用の固化剤Ｔの供給用の計量器９を接続してお
り、この計量器９のモータを10で示している。Therefore, in FIG. 2, a swirl chamber 1 as shown in FIG. 3 is provided in the middle of a pipe 3 for feeding ooze-like earth and sand S under mixed pressure as shown in FIG. Centrifugal impeller 5
A submersible sand pump 2 including a drive motor 6 is provided, and a hopper 8 and a solidifying agent T for soil improvement are provided on the suction side of the submersible sand pump 2 via a check valve 7 as shown in FIG. A meter 9 for supply is connected, and the motor of the meter 9 is indicated by 10.
【０００８】なお、計量器９上には固化剤Ｔを供給する
サイロ11が設けられ、さらにサイロ11の上部にはバッグ
フィルタ12が設けられている。次に、管路３の渦巻室１
から所定距離Ｄ離れた管路３内に、流速計13または流量
計が設けられている。そこで、管路３内を図８で説明し
たように混気圧送された土砂Ｓのプラグを流速計13また
は流量計の検出値の変化で検出して計量器９のモータ10
にその検出信号Ｇを送る。[0008] A silo 11 for supplying the solidifying agent T is provided on the measuring device 9, and a bag filter 12 is provided above the silo 11. Next, the spiral chamber 1 of the pipe 3
A flow meter 13 or a flow meter is provided in the pipe line 3 at a predetermined distance D from. Therefore, as described with reference to FIG. 8, the plug of the soil S sent under the mixed pressure is detected in the pipe 3 by a change in the detection value of the flow meter 13 or the flow meter, and the motor 10 of the measuring device 9 is detected.
To the detection signal G.
【０００９】流速計13または流量計を設けた管路３内の
地点から、固化剤供給用の計量器９を設けた地点まで、
土砂プラグが到達する時間をあらかじめ測定しておき、
流速計13または流量計の検出信号Ｇを受けてから所定時
間経過後に計量器９を作動させて、固化剤Ｔをホッパー
８内へ連続的に供給する。そこで、供給された固化剤Ｔ
は、矢印Ｒ方向に回転する遠心翼車５の遠心力により、
管路３内へ供給され、遠心翼車５の遠心力によりホッパ
ー８内へは吹き出すことがない。[0009] From a point in the conduit 3 where the flow meter 13 or the flow meter is provided to a point where the meter 9 for supplying the solidifying agent is provided.
Measure the time that the earth and sand plugs reach beforehand,
After a predetermined period of time has elapsed after receiving the detection signal G from the flow meter 13 or the flow meter, the measuring device 9 is operated to continuously supply the solidifying agent T into the hopper 8. Therefore, the supplied solidifying agent T
Is caused by the centrifugal force of the centrifugal impeller 5 rotating in the direction of arrow R.
It is supplied into the pipe 3 and does not blow out into the hopper 8 due to the centrifugal force of the centrifugal impeller 5.
【００１０】次に、流速計13または流量計で土砂Ｓのプ
ラグが通過したことを検知したら、所定時間経過後に計
量器９を停止して、固化剤Ｔの供給を停止する。この
時、遠心翼車５には何も供給されないので、管路３内の
圧送用の圧縮空気がホッパー８内へ吹き出そうとする
が、逆止弁７が機能してホッパー８内への吹き出しを防
止できる。Next, when the flow meter 13 or the flow meter detects that the plug of the earth and sand S has passed, the measuring device 9 is stopped after a predetermined time has elapsed, and the supply of the solidifying agent T is stopped. At this time, since nothing is supplied to the centrifugal impeller 5, the compressed air for pressure feeding in the pipeline 3 tries to blow out into the hopper 8, but the check valve 7 functions to blow out into the hopper 8. Can be prevented.
【００１１】すなわち、管路３内に設けた流速計13また
は流量計の土砂Ｓのプラグの検出値の変化に応じて計量
器９を適宜運転、停止させることにより、圧送中の土砂
Ｓ中に、一定の割合で固化剤Ｔを供給した後、固化剤Ｔ
を供給された混合泥Ｓt が図１の左側の管路３を圧送さ
れることになるが、この間遠心翼車５は常に矢印Ｒ方向
に回転させておくものとする。That is, by appropriately operating and stopping the measuring device 9 in accordance with a change in the detection value of the plug of the earth and sand S of the flow meter 13 or the flow meter provided in the pipeline 3, after supplying the solidifying agent T at a constant rate, solidifying agent T
Is fed through the pipeline 3 on the left side of FIG. 1 while the centrifugal impeller 5 is always rotated in the direction of arrow R.
【００１２】次に、図４は高濃度浚渫船15から混気圧送
により管路３内を圧送された軟泥状の土砂Ｓに、本発明
の装置を採用して固化剤Ｔを添加して埋立地16へ排出す
る連続処理システムを示しており、固化剤Ｔの供給量
は、流速計13からの検出信号Ｇを得て、図中20で示す本
発明の固化剤供給装置の計量器９の運転および停止によ
り調節される。Next, FIG. 4 shows that the solidifying agent T is added to the soft muddy soil S sent from the high-concentration dredger 15 through the pipeline 3 by the mixed pressure feeding method using the apparatus of the present invention, and the landfill is added. 16 shows a continuous processing system for discharging the solidifying agent T to the measuring device 9 of the solidifying agent supply device of the present invention shown in FIG. And adjusted by stopping.
【００１３】ここで、固化剤Ｔを添加した後、土砂Ｓと
固化剤Ｔとは土砂プラグの形成と崩壊とを繰り返すこと
により、混練手段を設けなくてもプラグフローミキシン
グによりＰで示す管路３の区間内で混練されるが、さら
に混練効果を高める必要のある場合には、管路３内の吐
出口付近にスタテックミキサー19のエレメントを挿入し
てもよい。このようなシステムにより埋立地16に投入さ
れる浚渫された軟泥化の土砂Ｓは、固化剤Ｔで強度が増
加し、埋立地の利用が早期に行える。Here, after adding the solidifying agent T, the soil S
The solidifying agent T is kneaded in the section of the conduit 3 indicated by P by plug flow mixing without providing a kneading means by repeating formation and collapse of the earth and sand plug. In some cases, an element of the static mixer 19 may be inserted near the discharge port in the pipeline 3. With such a system, the strength of the dredged sludge S, which is put into the landfill 16, is increased by the solidifying agent T , and the landfill can be used at an early stage.
【００１４】[0014]
【発明の効果】本発明は、土砂プラグの形成と崩壊とを
繰り返しながら土砂を混気圧送させ、その土砂プラグの
形成と崩壊とを繰り返す挙動を積極的に利用して土砂中
に均等に固化剤を混練させるようにしたから、特に他の
混練手段を設ける必要がなく、それによる経費の節減
と、混練手段の設置による故障の発生等の支障がない利
点を有する。また、管路内に設けた土砂のプラグの検出
値の変化に応じて、固化剤供給装置を運転、停止させる
ことにより、土砂プラグの形成と崩壊とを繰り返しなが
ら圧送されている土砂中に、一定の割合で固化剤を供給
することができる。 According to the present invention, the formation and collapse of earth and sand plugs
Repeatedly send the earth and sand mixed pressure, and
Active use of the behavior of repeated formation and collapse
Because the solidifying agent was kneaded evenly,
Eliminates the need for kneading means, thereby reducing costs
And there is no hindrance such as failure due to the installation of the kneading means.
Have a point . In addition, detection of earth and sand plugs installed in pipelines
Starts and stops the solidifying agent supply device according to the change in the value
By repeating the formation and collapse of sediment plugs,
Supply a solidifying agent at a certain rate
Can be done .
【図１】本発明の一実施例における土砂圧送管への固化
剤供給装置の要部断面で示す概略側面図である。FIG. 1 is a schematic side view showing a cross section of a main part of a device for supplying a solidifying agent to a sediment pressure pipe according to an embodiment of the present invention.
【図２】図１のＡ−Ａ′方向の平断面図である。FIG. 2 is a plan sectional view taken along the line AA 'of FIG.
【図３】図２のＢ−Ｂ′方向の正断面図である。FIG. 3 is a front sectional view taken along the line BB ′ of FIG. 2;
【図４】浚渫船からの軟泥状の土砂の混気圧送用管路に
本発明の装置を採用した例の連続処理システム図であ
る。FIG. 4 is a diagram showing a continuous processing system in which the apparatus of the present invention is employed in a pipeline for sending mixed pressure of ooze-like earth and sand from a dredger.
【図５】管路内の土砂に圧縮空気を供給した状態を示す
説明図である。FIG. 5 is an explanatory diagram showing a state in which compressed air is supplied to earth and sand in a pipeline.
【図６】図５の状態から土砂の上部が波立った状態を示
す説明図である。FIG. 6 is an explanatory view showing a state in which the upper portion of the earth and sand has waved from the state of FIG.
【図７】図６の状態から土砂が管内をプラグした状態を
示す説明図である。FIG. 7 is an explanatory view showing a state in which earth and sand are plugged in the pipe from the state of FIG. 6;
【図８】図５から図７までの状態の繰り返しにより混気
圧送される土砂のプラグの状態を示す説明図である。FIG. 8 is an explanatory diagram showing a state of a plug of earth and sand which is sent under mixed pressure by repeating the states of FIGS. 5 to 7;
１ 渦巻室 ２ 水中サンドポン
プ ３ 管路 ５ 遠心翼車 ７ 逆止弁 ９ 計量器 13 流速計 20 固化剤供給装置 Ｓ 土砂 Ｔ 固化剤DESCRIPTION OF SYMBOLS 1 Spiral chamber 2 Submersible sand pump 3 Pipe line 5 Centrifugal impeller 7 Check valve 9 Meter 13 Flowmeter 20 Solidifying agent supply device S Sediment T Solidifying agent
Claims (1)
気圧送により圧送されている土砂に固化剤を供給し、混
気圧送によって圧送される土砂が土砂プラグの形成と崩
壊とを繰り返すことにより土砂と固化剤とを管路内で混
練する混気圧送土砂と固化剤の混練方法において、管路
内に設けた土砂のプラグの検出値の変化に応じて、固化
剤供給装置を運転、停止させて圧送中の土砂中に一定の
割合で固化剤を供給する混気圧送土砂と固化剤の混練方
法。1. A method in which a solidifying agent is supplied to sediment that is being pumped by mixed-pressure feeding by repeating formation and collapse of a sediment plug, and the soil that is pumped by mixed-pressure feeding repeats formation and collapse of the sediment plug. Mixing pressure of soil and solidifying agent in a pipe
Solidifies in response to changes in the detected value of earth and sand plugs
Start and stop the dispensing device to keep a constant amount of
Mixing method of mixed pressure sand and solidifying agent to supply solidifying agent in proportion
Law .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3275353A JP3069976B2 (en) | 1991-10-23 | 1991-10-23 | Method of kneading mixed pressure sand and solidifying agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3275353A JP3069976B2 (en) | 1991-10-23 | 1991-10-23 | Method of kneading mixed pressure sand and solidifying agent |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29341499A Division JP3210648B2 (en) | 1999-10-15 | 1999-10-15 | Method of kneading earth and sand and solidifying agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05112965A JPH05112965A (en) | 1993-05-07 |
| JP3069976B2 true JP3069976B2 (en) | 2000-07-24 |
Family
ID=17554294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3275353A Expired - Fee Related JP3069976B2 (en) | 1991-10-23 | 1991-10-23 | Method of kneading mixed pressure sand and solidifying agent |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3069976B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013064279A (en) * | 2011-09-20 | 2013-04-11 | Seiho Industry Co Ltd | Reclamation method and reclamation apparatus for improved dredge soil |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH084051A (en) * | 1994-06-24 | 1996-01-09 | Ube Ind Ltd | Solidifying and force-feeding deice for soft mud |
| JPH0813541A (en) * | 1994-06-28 | 1996-01-16 | Ube Ind Ltd | Solidified pneumatic conveyor of sludge |
| JP3295621B2 (en) * | 1997-09-01 | 2002-06-24 | 東亜建設工業株式会社 | Method and apparatus for supplying and kneading additive material to earth and sand during mixed pressure feeding |
-
1991
- 1991-10-23 JP JP3275353A patent/JP3069976B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013064279A (en) * | 2011-09-20 | 2013-04-11 | Seiho Industry Co Ltd | Reclamation method and reclamation apparatus for improved dredge soil |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05112965A (en) | 1993-05-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |