JP2002285572A - Manufacturing method for fluidized treated soil and equipment - Google Patents
Manufacturing method for fluidized treated soil and equipmentInfo
- Publication number
- JP2002285572A JP2002285572A JP2001085083A JP2001085083A JP2002285572A JP 2002285572 A JP2002285572 A JP 2002285572A JP 2001085083 A JP2001085083 A JP 2001085083A JP 2001085083 A JP2001085083 A JP 2001085083A JP 2002285572 A JP2002285572 A JP 2002285572A
- Authority
- JP
- Japan
- Prior art keywords
- mud
- water
- muddy water
- soil
- water content
- 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.)
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Links
Landscapes
- Treatment Of Sludge (AREA)
- Accessories For Mixers (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、掘削工事において
発生する粘性土主体の泥土を流動化処理土として再利用
するための流動化処理土の製造方法および装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for producing fluidized soil for recycling mud mainly composed of clayey soil generated during excavation work as fluidized soil.
【０００２】[0002]
【従来の技術】近年、都市部におけるシールド工事にお
いては、建設副産物の発生量の抑制やリサイクルの推進
を図るため、建設発生土をインバート材や埋戻し材とし
て有効利用する流動化処理土工法を採用するケースが多
くなっている。2. Description of the Related Art In recent years, in a shielding work in an urban area, in order to suppress the generation amount of construction by-products and promote recycling, a fluidized soil construction method that effectively uses construction waste soil as invert material or backfill material has been adopted. More cases are being adopted.
【０００３】かかる流動化処理土工法は、粘性土を主体
とする泥土を解泥した後、解泥した泥水に固化材を添加
し混練して流動化処理土を製造し、この流動化処理土を
所定の埋戻し場所に打設し埋戻しを行う工法である。前
記固化材としては、通常、セメント、セメント系固化
材、石灰等のものが主に使用され、必要に応じて添加剤
等が加えられる。In the fluidized soil method, after the mud mainly composed of clayey soil is pulverized, a solidifying material is added to the pulverized muddy water and kneaded to produce a fluidized treated soil. Is placed in a predetermined backfill location to perform backfill. As the solidifying material, generally, cement, cement-based solidifying material, lime and the like are mainly used, and additives and the like are added as necessary.
【０００４】前記流動化処理土工法においては、従来よ
り、製造効率の向上や流動化処理土としての品質を確保
するために種々の方法や製造装置が提案されている。例
えば、特開平１１−４３９６７号公報においては、被処
理土から連続的に異物を除去する異物除去工程と、前記
工程を経た被処理土を密度を測定しながら混練槽に所定
の単位時間当たりの供給量で連続的に供給する被処理土
供給工程と、水または所定の密度の泥水を混練槽に所定
の単位時間当たりの供給量で連続的に供給する泥水供給
工程と、前記混練槽で前記被処理土と前記水または泥水
とを混合して得られる混合物に固化材を添加して混練す
ることで流動化処理土を連続的に得る混練工程と、前記
混練槽の混合物の密度およびフロー値を測定する測定工
程と、前記混合物の密度およびフロー値と、前記水また
は泥水および被処理土の密度から前記所定の混合比が得
られるに前記水または泥水および被処理土の単位時間当
たりの供給量を調節する供給量調節工程とを備えた流動
化処理土の製造方法および装置（従来例１）が提案され
ている。[0004] In the fluidized soil method, various methods and production apparatuses have been proposed in order to improve the production efficiency and ensure the quality of the fluidized soil. For example, in Japanese Unexamined Patent Application Publication No. 11-43967, a foreign matter removing step of continuously removing foreign matter from the soil to be treated, and the soil to be treated that has passed through the above-described step are measured in a kneading tank while measuring the density per unit time. A soil supply step for continuously supplying at a supply amount, a muddy water supply step for continuously supplying water or muddy water of a predetermined density to a kneading tank at a supply amount per a predetermined unit time, A kneading step of continuously adding fluidized soil by adding and solidifying a solidifying material to a mixture obtained by mixing the soil to be treated and the water or muddy water, and a density and a flow value of the mixture in the kneading tank. And measuring the density and flow value of the mixture and the density of the water or muddy water and the soil to be treated so that the predetermined mixing ratio is obtained, and supplying the water or muddy water and the soil to be treated per unit time. The amount Method and apparatus for producing fluid treatment soil and a supply amount regulation step of nodes (conventional example 1) has been proposed.
【０００５】また、特開２０００−１２０１０３号公報
においては、解泥処理設備と混練処理設備とを独立して
設置し、前記解泥処理設備において、解泥処理後の調整
泥土から振動スクリーンで礫分の除去を行うとともに、
調整泥土を調整泥槽土に一時的に貯留して均質化を図
り、解泥処理設備から混練処理設備に移送する配管中に
比重計を設けて比重を測定し、混練処理において前記比
重計測値を参考にして適切な給水量を決定する残土流動
化処理方法および設備（従来例２）が提案されている。In Japanese Patent Application Laid-Open No. 2000-120103, a mud treatment facility and a kneading treatment facility are installed independently. While removing the minute
The adjusted mud is temporarily stored in the adjusted mud tank soil to achieve homogenization, and a specific gravity meter is provided in a pipe that is transferred from the mud processing equipment to the kneading processing equipment, and the specific gravity is measured. A fluidization treatment method and equipment for remaining soil that determines an appropriate amount of water supply with reference to (2) is proposed.
【０００６】[0006]
【発明が解決しようとする課題】前記従来例１は、確か
に泥水の比重および固化材投入量を高精度で制御するこ
とが可能になるとともに、泥水の製造と、この泥水を用
いた流動化処理土の製造とを一つの混練槽で行うため装
置が簡素化される、省スペースで足りるなどの点で優れ
ている。しかし、解泥を行った泥水が規定値から外れる
場合には、所定の品質（比重、フロー値）が得られるま
で、再び解泥工程に送るループ系統の製造工程となって
いるため、泥土に対して添加される水の供給量の制御に
加えて、被処理土の供給量も制御しなければならないと
ともに、リターンされる泥水の比重は混練過程で絶えず
変化しており、この泥水の比重を考慮しながら添加量を
制御しなければならない。その結果、従来の方法よりも
制御項目が増え、制御が著しく複雑になるとともに、泥
水の比重やフロー値が規定値に安定するまでに時間が掛
かってしまうなどの問題がある。In the prior art 1, the specific gravity of the muddy water and the amount of the solidified material can be controlled with high accuracy, the muddy water is produced, and the muddy water is fluidized using the muddy water. Since the production of the treated soil is performed in one kneading tank, the apparatus is excellent in that the apparatus is simplified and space saving is sufficient. However, when the muddy water that has been deflocculated deviates from the specified value, it is a manufacturing process of a loop system that is sent again to the deflagration process until the predetermined quality (specific gravity, flow value) is obtained. In addition to controlling the amount of water added, the amount of soil to be treated must also be controlled, and the specific gravity of the returned mud is constantly changing during the kneading process. The amount added must be controlled while taking into account. As a result, there are problems that the number of control items increases as compared with the conventional method, the control becomes extremely complicated, and that it takes time until the specific gravity and the flow value of the muddy water are stabilized to the specified values.
【０００７】また、規定値を満足する場合には混練過程
で固化材を投入して混練した後、圧送ポンプにて所定の
打設場所に送ることができるが、ある時点で規定値から
外れることになった場合、再び泥水をループさせている
けれども、この経路切り替え時に、一時的に固化材が混
入されていない泥水が打設場所まで圧送されたり、固化
材が混入された泥水が再び泥水タンクを経て混練槽に戻
されることがあるため、局所的に流動化処理土の品質が
悪質になる、または混練槽内で固化材の硬化が始まり管
路の閉塞が発生するなどの虞があった。[0007] When the specified value is satisfied, the solidified material is charged and kneaded in the kneading process, and then can be sent to a predetermined setting place by a pressure feed pump. In this case, the muddy water is looped again, but when this route is switched, muddy water that is not mixed with the solidified material is temporarily pumped to the casting place, or the muddy water containing the solidified material is again returned to the mud tank. May be returned to the kneading tank after passing through, there is a risk that the quality of the fluidized soil is locally deteriorated, or that the solidified material starts to harden in the kneading tank and block the pipeline. .
【０００８】さらに、解泥処理を行う前に異物除去処理
を行うため、異物に付着した土や土塊も同時に除去され
てしまうため、泥土全量を効率的に処理できないなどの
問題があった。Furthermore, since the foreign matter removal treatment is performed before the demudification treatment, the soil and the lump adhering to the foreign matter are also removed at the same time, so that there is a problem that the entire amount of mud soil cannot be efficiently treated.
【０００９】一方、前記従来例２は、解泥処理を終え泥
水となった状態で異物除去を行うようにしているため、
泥土全量を効率的に処理可能になるとともに、解泥を終
えた泥水を調整泥水槽に複数バッチ分貯留するため、品
質（比重）のバラツキがあっても平均化されるなどのメ
リットはあるけれども、調整泥水槽に貯留された泥水毎
のバッチ処理となり連続処理が出来ないなどの問題があ
る。On the other hand, in the above-mentioned conventional example 2, foreign matter is removed in a state where muddy water has been obtained after the mud-removal treatment.
Although muddy soil can be treated efficiently, muddy water after demolition is stored in multiple batches in a regulated mud tank. Even if there is a variation in quality (specific gravity), it can be averaged. However, there is a problem that batch processing is performed for each mud stored in the adjusted mud tank and continuous processing cannot be performed.
【００１０】他方、この種の流動化処理土工法において
は、前述の如く、従来より品質の一定化（主に強度）を
図るために種々の工夫が成されているけれども、打設さ
れた流動化処理土について硬化後の強度を測定すると、
予想以上に強度のバラツキが生じていることが確認され
た。On the other hand, in this type of fluidized earth method, as described above, various devices have been conventionally devised in order to stabilize the quality (mainly strength). When the strength of the soil after hardening is measured,
It was confirmed that the variation in strength occurred more than expected.
【００１１】そこで本発明の主たる課題は、硬化後の強
度にバラツキの少ない一定品質の流動化土を効率良くか
つ精度良く得るための流動化処理土の製造方法および装
置を提供することにある。Accordingly, a main object of the present invention is to provide a method and an apparatus for producing a fluidized soil for efficiently and accurately obtaining a fluidized soil of constant quality with little variation in strength after hardening.
【００１２】[0012]
【課題を解決するための手段】本発明者等は、前記課題
を解決するために、一定の比重または含水比に調整され
た流動化処理土であっても、強度にバラツキを生じるの
かについて鋭意検討を重ねた結果、掘削される地盤の性
状変化によって泥土中に混入される砂等の含有率が異な
ると、これが原因して強度にバラツキが出ることを知見
した。Means for Solving the Problems In order to solve the above-mentioned problems, the present inventors have eagerly studied whether or not the strength of a fluidized soil which is adjusted to a certain specific gravity or water content will vary. As a result of repeated investigations, it was found that if the content of sand or the like mixed into the mud differs due to the change in the properties of the ground to be excavated, this causes variations in strength.
【００１３】また、より制御を簡単にしながら一定品質
の流動化処理土を得るには、目的とする含水比に徐々に
収束するような泥水調整方法を採ること、および固化材
混練前に所望含水比の泥水が得られる製造工程を採用す
ることが望ましいことを知見した。In order to obtain a fluidized soil of a constant quality while further simplifying the control, a method of adjusting muddy water so as to gradually converge to a desired water content ratio is adopted. It has been found that it is desirable to adopt a manufacturing process that can obtain a mud with a specific ratio.
【００１４】そこで前記課題を解決するための方法とし
て、加水しながら粘性土を主体とする泥土を解泥装置で
解泥し最終的に所望含水比の泥水を得る泥水製造工程
と、この泥水製造工程を経て得られた泥水に固化材を添
加・混練して流動化処理土を製造する固化材混練工程と
からなる流動化処理土の製造方法であって、前記泥水製
造工程は、解泥装置へ供給される泥土の流量および比重
を測定し、これら測定値に基づいて加水量を算出すると
ともに、該水量を前記解泥装置に添加しながら前記泥土
の解泥を行い、所望含水比よりも低い含水比の泥水に調
整する解泥工程と、前記解泥工程によって得られた泥水
からシルト・粘性土以外の主に砂、砂礫、貝殻、ガラ等
の不純混入物を除去する選別工程と、前記選別工程を経
た泥水を泥水調整槽に導き、泥水容量および泥水比重を
測定し、これら測定値に基づいて加水量を算出するとと
もに、該水量を前記泥水調整槽に添加・混合し、所望含
水比の泥水を得る泥水調整工程とからなることを特徴と
する流動化処理土の製造方法が提供される。Therefore, as a method for solving the above-mentioned problems, a muddy water producing step of demulsifying mud mainly composed of viscous soil with a demulsifier while adding water to finally obtain muddy water having a desired water content ratio, A solidifying material kneading step of adding and kneading a solidifying material to the muddy water obtained through the process to produce a fluidized soil, wherein the muddy water producing process comprises Measure the flow rate and specific gravity of the mud supplied to, and calculate the amount of water based on these measured values, de-mud the mud while adding the amount of water to the de-muxing device, than the desired water content ratio A demulsification step of adjusting to a low water content muddy water, and a sorting step of removing impurities such as mainly sand, gravel, shells, and shells other than silt and cohesive soil from the muddy water obtained by the demulsification step, The muddy water that has passed through the sorting process is supplied to a muddy water adjusting tank And calculating the amount of water based on the measured values, calculating the amount of water based on the measured values, and adding and mixing the amount of water to the mud adjusting tank to obtain a mud having a desired water content. A method for producing a fluidized treated soil is provided.
【００１５】この場合、前記選別工程においては、シル
トと砂との境界値となる粒径７５μｍを目標分級点とし
て選別を行うようにする。また、前記解泥装置は荷重計
を備え、泥土重量および加水量を検証するようにしてあ
ると、より高精度で泥水の含水比調整が行えるようにな
る。In this case, in the sorting step, sorting is performed using a particle size of 75 μm, which is a boundary value between silt and sand, as a target classification point. In addition, if the above-mentioned mud-removing apparatus is provided with a load cell and verifies the mud weight and the amount of water added, the water content ratio of the muddy water can be adjusted with higher accuracy.
【００１６】次いで、前記課題を解決するための装置と
して、加水しながら粘性土を主体とする泥土を解泥装置
で解泥し最終的に所望含水比の泥水を得る泥水製造設備
と、この泥水製造設備を経て得られた前記泥水に固化材
を添加・混練して流動化処理土を製造する固化材混練設
備とからなる流動化処理土の製造装置であって、前記泥
水製造設備は、供給される泥土の流量および比重の測定
に基づいて算出された加水量を添加しながら前記泥土の
解泥を行い、所望含水比よりも低い含水比の泥水に調整
する解泥装置と、前記解泥装置によって得られた泥水か
らシルト・粘性土以外の主に砂、砂礫、貝殻、ガラ等の
不純混入物を除去する選別装置と、前記選別装置を経た
泥水が貯留されるとともに、測定された泥水容量および
泥水比重に基づいて算出された加水量を添加・混合する
ことで所望含水比の泥水を得る泥水調整槽とを含むこと
を特徴とする流動化処理土の製造装置が提供される。Next, as a device for solving the above-mentioned problems, a muddy water production facility for demulling mud mainly composed of viscous soil with a dewatering device while adding water, and finally obtaining muddy water having a desired water content ratio, A fluidized treated soil production apparatus comprising a solidified material kneading facility for adding and kneading a solidified material to the muddy water obtained through the production facility to produce a fluidized treated soil, wherein the muddy water production facility comprises A muddy deagglomeration device for demulling the mud while adding the amount of water calculated based on the measurement of the flow rate and specific gravity of the mud to be performed, and adjusting the muddy water to a muddy water having a water content lower than a desired water content ratio; Sorting device that removes impurities such as sand, gravel, shells, and shells mainly from muddy water obtained by the device, other than silt and cohesive soil, and the muddy water that has passed through the separating device is stored and measured. Based on volume and mud density Apparatus for producing fluidizing treated soil, which comprises a mud adjusting tank to obtain a mud desired water content by adding and mixing the calculated amount of water is provided.
【００１７】この場合、前記選別装置として、シルトと
砂との境界値となる粒径７５μｍを目標分級点とする振
動篩い、遠心分離機または湿式サイクロンを用いること
ができる。また、前記解泥装置として、材料投入口を備
えるとともに、材料排出口を有する横型円筒状ドラムの
断面中心位置に水平方向に沿って回転駆動シャフトが配
設されるとともに、この回転駆動シャフトに対して、部
材長手方向に適宜の間隔でかつ隣接間で円周方向の固定
位置を互いに異ならせた複数のショベル羽根を備え、か
つ前記横型円筒状ドラムの底部側にチョッパー羽根が配
設された構造の混合機を用いることができる。In this case, a vibrating sieve, a centrifugal separator or a wet cyclone having a target classification point of 75 μm in particle size, which is a boundary value between silt and sand, can be used as the sorting device. In addition, as the above-mentioned mud separator, a rotary drive shaft is provided along a horizontal direction at a cross-sectional center position of a horizontal cylindrical drum having a material discharge port, and a material input port is provided. A plurality of shovel blades whose circumferential fixing positions are different from each other at appropriate intervals in the longitudinal direction of the member and adjacent to each other, and chopper blades are arranged on the bottom side of the horizontal cylindrical drum. Can be used.
【００１８】[0018]
【発明の実施の形態】以下、本発明の実施の形態につい
て図面を参照しながら詳述する。Embodiments of the present invention will be described below in detail with reference to the drawings.
【００１９】図１は本発明に係る流動化処理土の製造シ
ステムの全体図（その１）、図２は本発明に係る流動化
処理土の製造システムの全体図（その２）である。FIG. 1 is an overall view of a fluidized soil production system according to the present invention (No. 1), and FIG. 2 is an overall view of a fluidized soil production system according to the present invention (No. 2).
【００２０】泥土圧式シールド掘削は、主に粘性土や粘
性土を含む地層に適するシールド掘削工法であり、近年
は付帯設備が少なくて済む、作業ヤードおよび立坑用地
の縮小化に資するなどの理由から多用されている。泥土
圧式シールド掘削では、従来はベルトコンベアによる泥
土輸送が主流を占めていたが、近年は坑内の安全性確
保、排土作業の効率化などの理由からポンプ圧送方式が
多用されるようになってきている。Mud pressure shield excavation is a shield excavation method suitable mainly for clayey soils or layers containing clayey soils. In recent years, the number of incidental facilities has been reduced and the work yard and the shaft site have been reduced. It is heavily used. Conventionally, mud transportation using a belt conveyor has been the mainstream in mud pressure shield excavation.In recent years, however, pump pumping methods have been widely used for reasons such as ensuring safety inside the mine and improving the efficiency of earth removal work. ing.
【００２１】従来は、排出された泥土は専ら廃棄処理さ
れていたが、本発明では排出される泥土の一部をインバ
ート材や埋戻し土として有効利用することを目的とし
て、泥土圧シールド１からポンプ圧送される圧送ライン
を途中で分岐させて、一方側圧送ラインを土砂ホッパー
５に導くとともに、他方側圧送ラインを流動化処理土製
造システム６へ導き、流動化処理土を製造するようにし
ている。Conventionally, the discharged mud was exclusively disposed of. However, in the present invention, the mud pressure shield 1 is used to effectively utilize a part of the discharged mud as invert material or backfill soil. The pumping line fed by the pump is branched on the way, and the one-side pumping line is guided to the earth and sand hopper 5, and the other-side pumping line is guided to the fluidized treated soil production system 6 to produce fluidized treated soil. I have.
【００２２】具体的には、泥土圧式シールド掘削におけ
る泥土のポンプ圧送設備では、泥土圧式シールド１に設
備されたスクリューコンベア２の下側に圧送用ポンプ３
を置き、スクリューコンベア２から落下した泥土を受け
取り、圧送用配管４を通して搬出するようにし、前記圧
送用配管４を途中から分岐させて一方側圧送用配管４Ａ
を地上の土砂ホッパー５に導き、他方側圧送配管４Ｂを
流動化処理土製造システム６に導くようにしている。埋
戻し土として必要な量は掘削土の内の一部分であり、ま
た掘進過程では地層の変化により流動化処理土として不
適な砂層または砂を多く含む土層に遭遇する場合もある
ため、泥土流路を切り替え可能とし、発生泥土の内の所
望量をかつ流動化処理土として好適な土質性状のものを
流動化処理土として処理できるようにするためである。More specifically, in the mud pumping equipment for excavating the mud pressure shield, a pump 3 is provided below the screw conveyor 2 installed in the mud pressure shield 1.
To receive the mud dropped from the screw conveyor 2 and carry it out through the pressure feeding pipe 4. The pressure feeding pipe 4 is branched from the middle and the one side pressure feeding pipe 4 </ b> A
To the earth and sand hopper 5 on the ground, and the other side pressure feed pipe 4B to the fluidized soil production system 6. The required amount of backfill soil is a part of the excavated soil, and in the excavation process, due to changes in the geological layer, sometimes an unsuitable sand layer or soil layer containing a large amount of sand is encountered as fluidized soil. The reason for this is that the path can be switched so that a desired amount of the generated mud and soil properties suitable as fluidized soil can be treated as fluidized soil.
【００２３】前記流動化処理土製造システム６において
は、泥土の定量供給のために先ず、圧送された泥土が受
けホッパー７に投入される。この受けホッパー７に投入
された泥土は、スクリューコンベア８により中継ホッパ
ー９に投入された後、圧送ポンプ１０により泥土圧送管
１２を介して解泥装置１１に送られる。この解泥装置１
１に投入される泥土量および泥土比重は、前記泥土圧送
管１２の途中に配設した比重計１３、流量計１４により
測定され管理されるようになっている。前記比重計１３
としては、例えばγ線密度計、差圧式密度計などを使用
することができ、前記流量計１４としては、例えば電磁
流量計、差圧式流量計、超音波式流量計などを使用する
ことができる。In the fluidized soil production system 6, first, the fed mud is fed into a receiving hopper 7 for quantitatively supplying mud. The mud thrown into the receiving hopper 7 is thrown into the relay hopper 9 by the screw conveyor 8, and then sent to the mud separator 11 via the mud pressure feed pipe 12 by the pressure feed pump 10. This mud separator 1
The amount of mud and the specific gravity of the mud introduced into 1 are measured and managed by a specific gravity meter 13 and a flow meter 14 arranged in the middle of the mud pumping pipe 12. The hydrometer 13
For example, a γ-ray density meter, a differential pressure type density meter, or the like can be used. As the flow meter 14, for example, an electromagnetic flow meter, a differential pressure type flow meter, an ultrasonic type flow meter, or the like can be used. .
【００２４】一方、前記解泥装置１１には、清水槽１５
に貯留された水が、送水ポンプ１６により引き抜かれ送
水管１７を介して供給されるようになっている。解泥装
置１１に対する供給水量は前記送水管１７の途中に配設
した流量計１８により測定され管理されるようになって
いる。On the other hand, a fresh water tank 15
Is drawn out by a water supply pump 16 and supplied through a water supply pipe 17. The amount of water supplied to the mud separator 11 is measured and managed by a flow meter 18 provided in the middle of the water pipe 17.
【００２５】解泥装置１１に投入された泥土は、ここで
供給された水と共に混合・分散されスラリー状に解泥さ
れる。この解泥装置１１における解泥工程では、解泥装
置１１へ供給される泥土流量および泥土比重を測定し、
これら測定値に基づいて前記解泥装置１１へ供給する加
水量が算出される。この際の加水量は、泥水を所望含水
比（固化材投入前の最終含水比）よりも低くかつ好まし
くは近似する含水比とするための加水量である。仮に、
所望含水比が１７０％であるならば１４０〜１６０％程
度の含水比の泥水に調整される。The mud thrown into the mud separator 11 is mixed and dispersed together with the water supplied here, and is pulverized into a slurry. In the demulsification process in this demulsifier 11, the flow rate and the specific gravity of the mud supplied to the demulsifier 11 are measured.
Based on these measured values, the amount of water to be supplied to the mud separator 11 is calculated. The amount of water added at this time is an amount of water for making the muddy water content lower than the desired water content ratio (final water content ratio before the solidification material is charged) and preferably close to the desired water content ratio. what if,
If the desired water content is 170%, it is adjusted to muddy water having a water content of about 140 to 160%.
【００２６】すなわち、前記泥土圧送管１２に配設した
比重計１３、流量計１４の測定値から解泥装置１１に供
給される土の重量および水の重量を割り出し、所望含水
比よりも低くかつ近似する含水比に調整するための加水
量が演算され、この水量が解泥装置１１に供給される。
なお、前記泥土の比重計測および流量は、泥土圧シール
ド１からの圧送配管中に排土管理のために配設してある
比重計５０および流量計５１によって代用することもで
きる。また、特に解泥をバッチ処理で行う場合には、精
度向上のために前記解泥装置１１の下面側にロードセル
等の荷重計３０、３０を設け、泥土重量および加水量を
検証するようにしてもよい。That is, the weight of the soil and the weight of the water supplied to the mud separator 11 are determined from the measured values of the specific gravity meter 13 and the flow meter 14 disposed in the mud pumping pipe 12 and are lower than the desired water content ratio. The amount of water for adjusting to an approximate water content ratio is calculated, and this amount of water is supplied to the mud separator 11.
Note that the specific gravity measurement and the flow rate of the mud can be substituted by a specific gravity meter 50 and a flow meter 51 which are provided in the pumping pipe from the mud pressure shield 1 for discharging management. In particular, in the case of performing the deflocculation in a batch process, load cells 30, 30 such as load cells are provided on the lower surface side of the deflocculator 11 in order to improve the accuracy, and the mud weight and the amount of water added are verified. Is also good.
【００２７】ところで、前記解泥装置１１としては、図
３および図４に示されるスキ型ショベル羽根式高速混合
機が好適に用いられる。このスキ型ショベル羽根式高速
混合機１１は、上部に材料投入口２０ａを備えるととも
に、下部に開閉自在のゲートを備えた材料排出口２０ｂ
を有する横型円筒形状のドラム２０の断面中心位置に水
平方向に沿って回転シャフト２１が配設されるととも
に、前記横型円筒状ドラム２０の側部に前記回転シャフ
ト２１を回転駆動させる駆動源２２を配置した装置で、
前記回転シャフト２１には、部材長手方向に適宜の間隔
で、かつ隣接間で円周方向の固定位置を互いに異ならせ
ながら、図４に示される断面視で丁度円周方向を等分す
るように複数の、図示例では３本のショベル羽根２３、
２３…が設けられているとともに、前記ドラム２０の底
部側であってかつ前記ショベル羽根２３、２３…の間に
チョッパー羽根２４、２４を備えた構造の混合装置であ
る。なお、符号２５はエア抜き孔２５である。Incidentally, as the above-mentioned sludge removing apparatus 11, a ski-type shovel blade type high-speed mixer shown in FIGS. 3 and 4 is preferably used. The ski-type shovel blade-type high-speed mixer 11 has a material inlet 20a at an upper portion and a material outlet 20b having a gate which can be opened and closed at a lower portion.
A rotation shaft 21 is disposed along the horizontal direction at the center of the cross section of the horizontal cylindrical drum 20 having a horizontal axis, and a drive source 22 for rotating and driving the rotation shaft 21 is provided on a side of the horizontal cylindrical drum 20. With the placed device,
The rotating shaft 21 is divided at appropriate intervals in the longitudinal direction of the member and at circumferentially fixed positions between adjacent members so that the circumferential direction is exactly equally divided in the sectional view shown in FIG. 4. A plurality of, in the illustrated example, three excavator blades 23,
23 are provided and chopper blades 24, 24 are provided on the bottom side of the drum 20 and between the shovel blades 23, 23 .... Reference numeral 25 denotes an air vent hole 25.
【００２８】前記ショベル羽根２３は、主に泥土の混練
作用を担い、一方前記チョッパー羽根２４は主に高速剪
断分散作用を担うことで、粘性の高い泥土であっても完
全溶解が可能となる。すなわち、前記ショベル羽根２３
は泥土を浮遊拡散効果により三次元的に運動・撹拌し、
短時間で効率的に均質に混合するとともに、前記チョッ
パー羽根２４が泥土に高速剪断作用を与え、土塊状でか
つ粘性の高い泥土であっても完全にスラリー状に溶解す
ることが可能となる。The shovel blade 23 mainly plays a role of kneading mud, while the chopper blade 24 mainly plays a role of high-speed shearing and dispersing, so that even mud having high viscosity can be completely dissolved. That is, the shovel blade 23
Moves and stirs mud three-dimensionally by the floating diffusion effect,
In addition to mixing efficiently and homogeneously in a short time, the chopper blades 24 apply a high-speed shearing action to the mud, and even if the clay is clumpy and has high viscosity, it can be completely dissolved in a slurry.
【００２９】前述した構造および機能を備える解泥装置
（スキ型ショベル羽根式高速混合機）は、たとえば粉体
混合技術の分野で商品名：プローシェアーミキサー〔太
平洋機工株式会社製〕として市場に提供されているミキ
サーをそのまま使用することができる。なお、上記例で
はバッチ式解泥装置を用いたが、泥土を連続的に解泥処
理する場合には、横型円筒状ドラム２０の一方端側に材
料投入口を有するとともに、他方端側に材料排出口を有
し、材料を連続処理可能とした連続式スキ型ショベル羽
根式高速混合機を用いることができる。A mud-removing device (ski-type shovel blade-type high-speed mixer) having the above-described structure and function is provided on the market as, for example, a powder shear mixer (produced by Taiheiyo Kiko Co., Ltd.) in the field of powder mixing technology. The mixer that has been used can be used as it is. Note that, in the above example, a batch-type mud separator was used. However, when mud soil is to be continuously pulverized, a material input port is provided at one end of the horizontal cylindrical drum 20 and a material is provided at the other end. A continuous ski-type shovel blade-type high-speed mixer having a discharge port and capable of continuously processing materials can be used.
【００３０】解泥された泥土は、前記解泥装置１１の下
方側に配置されたアンダータンク１９に投入される。こ
のアンダータンク１９は、次工程の選別工程に泥水を定
量づつ供給するバッファ的役割を担う貯留槽である。な
お、図示例では、確認的にアンダータンク１９に設けた
比重計測装置２７、具体的にはアンダータンク１９から
引き抜いた泥水を再びアンダータンク１９に戻す循環路
２８中に比重計２９を設けた比重計測装置２７により泥
水比重を計測するようにしている。なお、この比重計測
装置２７は省略することが可能である。The mud which has been pulverized is put into an under tank 19 arranged below the pulverization apparatus 11. The under tank 19 is a storage tank that serves as a buffer to supply muddy water quantitatively to the next sorting step. In the illustrated example, a specific gravity measuring device 27 is provided in the under tank 19, specifically, a specific gravity meter 29 is provided in a circulation path 28 for returning muddy water drawn from the under tank 19 back to the under tank 19. The measuring device 27 measures the specific gravity of the muddy water. The specific gravity measuring device 27 can be omitted.
【００３１】前記解泥により、所望含水比よりも低い含
水比の泥水に一次調整された泥水は、選別機３１に掛け
られ、ここでシルト・粘性土以外の主に砂、砂礫、貝
殻、ガラ等の不純混入物が除去される。具体的には、前
記振動篩い、遠心分離機または湿式サイクロン等の選別
機３１を用い、シルトと砂との境界値となる粒径７５μ
ｍを目標分級点として、該分級点よりも大径のものを分
級・除去する。従来においても、解泥後の泥水から礫以
上（粒径２．０mm以上：JIS A 1204）の異物除去が行わ
れていたが、本方法では、砂（粒径７５μｍ〜２mm：JI
S A 1204）を含めて除去するようにしている。従来の場
合には、砂の混入を許容したまま流動化処理土が製造さ
れていたが、砂の混入率が掘削地盤の性状によって絶え
ず変化し、強度にバラツキを生じさせていたため、本方
法では砂以上の粒径物を基本的に除去し、シルトおよび
粘土を主たる土成分とすることにより強度にバラツキの
ない一定品質の流動化処理土が製造可能となる。The mud which has been primarily adjusted to a mud having a water content lower than the desired water content by the above-mentioned deliquescing is applied to a sorter 31, where it is mainly sand, gravel, shells, and shells other than silt / cohesive soil. Is removed. Specifically, using a vibrating sieve, a centrifugal separator or a sorter 31 such as a wet cyclone, a particle size of 75 μm, which is a boundary value between silt and sand, is used.
With m being the target classification point, those having a diameter larger than the classification point are classified and removed. In the past, foreign matter removal of more than gravel (particle size 2.0 mm or more: JIS A 1204) was performed from muddy water after deliquescing. However, in this method, sand (particle size 75 μm to 2 mm: JI
SA 1204). In the conventional case, fluidized soil was manufactured while allowing sand to be mixed in, but the sand mixing rate constantly changed due to the properties of the excavated ground, causing variations in strength, so in this method, By basically removing particles having a particle size equal to or larger than sand and using silt and clay as main soil components, it is possible to produce a fluidized treated soil having a constant quality without variation in strength.
【００３２】砂以上の粒径物が除去された一次泥水は、
ホッパ３２を経て次に泥水調整槽３３Ａ、３３Ｂに導入
され、ここで所望含水比の泥水に調整される。なお、２
つの泥水調整槽３３Ａ、３３Ｂを設けたのは、これらを
交互使用することで泥水調整を連続処理するためであ
り、製造時間に余裕がある場合には１槽でも構わない。[0032] The primary mud from which the particles larger than sand are removed is:
After passing through the hopper 32, it is introduced into the muddy water adjusting tanks 33A and 33B, where the muddy water is adjusted to have a desired water content. In addition, 2
The reason why the two muddy water adjusting tanks 33A and 33B are provided is to continuously perform muddy water adjustment by alternately using them, and if there is enough production time, one tank may be used.
【００３３】前記泥水調整槽３３Ａ、３３Ｂには、それ
ぞれ清水槽１５からの水供給路３４が形成されるととも
に、水路中間に配設された流量計３５により供給水量が
管理されるようになっている。In each of the muddy water adjusting tanks 33A and 33B, a water supply path 34 from the fresh water tank 15 is formed, and the amount of supplied water is controlled by a flow meter 35 disposed in the middle of the water path. I have.
【００３４】泥水調整槽３３Ａ（３３Ｂ）に投入された
泥水は、先ず循環路２８及び比重計２９からなる比重計
測装置２７により比重が計測されるとともに、レベル計
３７により泥水容量が計測され、泥水の土および水の重
量が夫々割り出され、所望の含水比とするための加水量
が算出される。そして、清水槽１５からポンプ２６によ
り送水管３４を通して前記加水量に相当する水が供給・
混合され、所望含水比の泥水に調整される。First, the specific gravity of the mud injected into the mud adjusting tank 33A (33B) is measured by the specific gravity measuring device 27 including the circulation path 28 and the specific gravity meter 29, and the mud volume is measured by the level meter 37. And the weight of soil and water are calculated respectively, and the amount of water for obtaining a desired water content ratio is calculated. Then, water corresponding to the amount of water is supplied from the fresh water tank 15 through the water supply pipe 34 by the pump 26.
It is mixed and adjusted to a muddy water having a desired water content.
【００３５】なお、前記レベル計３７としては、例えば
差圧式液面計、ダイヤフラム式液面計、静電容量式レベ
ル計、超音波式レベル計などを使用することができる。
また、静電容量式または電極式などのレベルスイッチを
配設し、所定量の泥水を泥水調整槽３３Ａ、３３Ｂに貯
留するようにしてもよい。As the level meter 37, for example, a differential pressure type liquid level meter, a diaphragm type liquid level meter, a capacitance type level meter, an ultrasonic level meter, or the like can be used.
Alternatively, a level switch of a capacitance type or an electrode type may be provided to store a predetermined amount of muddy water in the muddy water adjusting tanks 33A and 33B.
【００３６】所望含水比に調整された泥水は、次いで図
２に示されるように、泥水貯留槽３８、３８…に送ら
れ、ここに貯留された後、固化材混練工程に送られるよ
うになっている。これら泥水貯留槽３８、３８…は、必
要容積の貯留槽を構成するために連結管３９、３９…に
より夫々連結された貯留槽で、各泥水貯留槽３８、３８
…は撹拌羽根を備え、固形物等の凝集が生じないように
常時または適時、撹拌が行われている。The muddy water adjusted to the desired water content is then sent to the muddy water storage tanks 38, 38,... As shown in FIG. 2, where it is stored and then sent to the solidifying material kneading step. ing. These muddy water storage tanks 38 are connected by connecting pipes 39 to form a storage tank of a required volume.
Are provided with stirring blades, and are constantly or appropriately stirred so as to prevent aggregation of solids and the like.
【００３７】前記所望含水比に調整された泥水は、その
後、固化材混練機４０Ａ、４０Ｂに送られる。送給量は
泥水供給管の途中に配設された流量計４１によって測定
されるようになっている。前記固化材混練機４０Ａ、４
０Ｂには、前記泥水の他、固化材貯蔵槽４２Ａ、４２Ｂ
から固化材が前記流量計４１の計測値に基づいて算出さ
れた添加量に従って定量づつ供給されるようになってい
る。前記固化材としては、例えばセメント、セメント系
固化材、石灰などを用いることができる。なお、図示例
で、固化材混練系統を２系統としたのは、インバート埋
戻し用と駅部埋戻し用とで設計強度が異なり、固化材添
加量が異なっているためである。The muddy water adjusted to the desired water content is then sent to the solidifying material kneaders 40A and 40B. The feed rate is measured by a flow meter 41 provided in the middle of the muddy water supply pipe. The solidifying material kneading machine 40A, 4
0B, in addition to the mud, solidified material storage tanks 42A, 42B
Thus, the solidified material is supplied in a fixed amount according to the addition amount calculated based on the measurement value of the flow meter 41. As the solidifying material, for example, cement, cement-based solidifying material, lime, or the like can be used. In the illustrated example, two solidification material kneading systems are used because the design strength is different between the invert backfilling and the station backfilling, and the solidification material addition amount is different.
【００３８】ところで、前記固化材混練機４０Ａ、４０
Ｂとしては、種々の混練機を用いることができるが、こ
れらの中で特に連続処理に適するスパイラル・ピンミキ
サーが好適に使用される。このスパイラル・ピンミキサ
ーは、図５に示されるように、逆截頭円錐状のドラム４
４の内部に、所定の間隙を空けた状態で、投入口部に分
散ローター４５を内設するとともに、上面および周面に
多数のピン４６ａ…、４６ｂ…が植設されたミキシング
ローター４６を内設した構造の混合・混練機で、投入口
から投入された固化材は、高速回転する分散ローター４
５によって全周方向に均一に導入されるとともに、泥水
が前記分散ローター４５の内部を通り、投入材料と同様
に全周方向に均一に導入される。ドラム内に導入された
固化材および泥水は、ミキシングローター４６の上面に
スパイラル状に配列された一次分散用ピン４６ａ、４６
ａ…により一次的に粗剪断され、次いでミキシングロー
ター４６の回転力を受け渦流状に滞留している間に、周
面の二次分散ピン４６ｂ、４６ｂ…によって激しく剪断
される。Incidentally, the solidifying material kneaders 40A, 40A
As B, various kneaders can be used. Among them, a spiral pin mixer particularly suitable for continuous processing is suitably used. As shown in FIG. 5, the spiral pin mixer has an inverted frustoconical drum 4.
4, a dispersion rotor 45 is provided at the input port with a predetermined gap therebetween, and a mixing rotor 46 having a large number of pins 46a, 46b,. In the mixing / kneading machine having the installed structure, the solidified material supplied from the charging port is dispersed at a high speed by a dispersion rotor 4.
5, the muddy water is uniformly introduced in the entire circumferential direction, and the muddy water passes through the inside of the dispersion rotor 45 and is uniformly introduced in the entire circumferential direction similarly to the input material. The solidified material and mud introduced into the drum are separated from the primary dispersing pins 46 a and 46 arranged in a spiral on the upper surface of the mixing rotor 46.
a), and then violently sheared by the secondary dispersion pins 46b, 46b,.
【００３９】所定量の固化材が添加・混合された一方側
の流動化処理土は、圧送ポンプ４３Ａによりトンネル内
に送られインバートに打設され、他方側の流動化処理土
は圧送ポンプ４３Ｂにより駅部に送られ駅部上床に打設
される。The fluidized soil on one side to which a predetermined amount of solidified material has been added and mixed is sent into the tunnel by a pressure pump 43A and cast into an invert, and the fluidized soil on the other side is pushed by a pressure pump 43B. It is sent to the station and is placed on the upper floor of the station.
【００４０】[0040]
【発明の効果】以上詳説のとおり本発明によれば、硬化
後の強度にバラツキの少ない一定品質の流動化処理土を
効率良くかつ精度良く得ることが可能となる。As described in detail above, according to the present invention, it is possible to efficiently and accurately obtain a fluidized soil having a constant quality with little variation in strength after curing.
【図１】本発明に係る流動化処理土の製造システムの全
体図（その１）である。FIG. 1 is an overall view (part 1) of a system for producing fluidized soil according to the present invention.
【図２】本発明に係る流動化処理土の製造システムの全
体図（その２）である。FIG. 2 is an overall view (part 2) of the fluidized soil production system according to the present invention.
【図３】泥土の解泥に使用される解泥装置１１の一部破
断斜視図である。FIG. 3 is a partially broken perspective view of a mud-removing apparatus 11 used for mud-removing mud.
【図４】解泥装置１１の横断面図（図３のIV−IV線矢視
図）である。FIG. 4 is a cross-sectional view (a view taken along the line IV-IV in FIG. 3) of the mud separator 11.
【図５】スパイラル・ピンミキサーの断面構造図であ
る。FIG. 5 is a sectional structural view of a spiral pin mixer.
１…泥土圧シールド、２…スクリューコンベア、３…圧
送用ポンプ、４…圧送用配管、５…土砂ホッパー、６…
流動化処理土製造システム、７…受けホッパー、８…ス
クリューコンベア、９…中継ホッパー、１０…圧送ポン
プ、１１…解泥装置、１２…泥土圧送管、１３・２９・
５０…比重計、１４・１８・３５・４１・５１…流量
計、１５…清水槽、１９…アンダータンク、２０…横型
円筒状ドラム、２０ａ…材料投入口、２０ｂ…材料排出
口、２１…回転シャフト、２２…駆動源、２３…ショベ
ル羽根、２４…チョッパー羽根、２７…比重計測装置、
３１…選別機、３３Ａ・３３Ｂ…泥水調整槽、３７…レ
ベル計、３８…泥水貯留槽、４０Ａ・４０Ｂ…固化材混
練機、４２Ａ・４２Ｂ…セメント貯蔵槽DESCRIPTION OF SYMBOLS 1 ... Mud pressure shield, 2 ... Screw conveyor, 3 ... Pump for pumping, 4 ... Piping for pumping, 5 ... Sand hopper, 6 ...
Fluidized soil production system, 7: Receiving hopper, 8: Screw conveyor, 9: Relay hopper, 10: Pumping pump, 11: Mud separator, 12: Mud pumping pipe, 13.29.
50: Specific gravity meter, 14, 18, 35, 41, 51: Flow meter, 15: Fresh water tank, 19: Under tank, 20: Horizontal cylindrical drum, 20a: Material inlet, 20b: Material outlet, 21: Rotation Shaft, 22: drive source, 23: shovel blade, 24: chopper blade, 27: specific gravity measuring device,
31 ... sorter, 33A / 33B ... muddy water adjusting tank, 37 ... level gauge, 38 ... muddy water storage tank, 40A / 40B ... solidifying material kneader, 42A / 42B ... cement storage tank
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｃ０２Ｆ 11/00 Ｃ０２Ｆ 11/00 Ｃ ＺＡＢ ＺＡＢＡ (72)発明者 村本 利行 東京都中央区日本橋本町４丁目12番20号 佐藤工業株式会社内 (72)発明者 市野 道明 東京都新宿区西新宿６−24−１ 佐藤工業 株式会社東京支店内 (72)発明者 花田 行和 東京都新宿区西新宿６−24−１ 佐藤工業 株式会社東京支店内 (72)発明者 小林 拓 東京都新宿区西新宿６−24−１ 佐藤工業 株式会社東京支店内 (72)発明者 福岡 健一 東京都中央区日本橋本町４丁目12番20号 佐藤工業株式会社内 (72)発明者 軽込 茂 東京都新宿区西新宿６−24−１ 佐藤工業 株式会社東京支店内 Ｆターム(参考） 4D059 AA09 BJ01 CB06 CC04 EA01 EA02 EB01 4G035 AB46 AE01 4G037 BC01 BD04 BD07 EA03 4G078 AA03 AB20 BA01 BA11 DA26 DA28 DA30 EA20 ──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification code FI Theme coat ゛ (Reference) C02F 11/00 C02F 11/00 C ZAB ZABA (72) Inventor Toshiyuki Muramoto 4-chome, Nihonbashi Honcho, Chuo-ku, Tokyo No. 12-20 Inside Sato Kogyo Co., Ltd. (72) Michiaki Ichino 6-24-1, Nishi-Shinjuku, Shinjuku-ku, Tokyo Sato Kogyo Co., Ltd., Tokyo Branch (72) Yukikazu Hanada 6-Nishi Shinjuku, Shinjuku-ku, Tokyo 24-1 Sato Kogyo Co., Ltd. Tokyo Branch (72) Inventor Taku Kobayashi 6-2-4-1 Nishi Shinjuku, Shinjuku-ku, Tokyo Sato Kogyo Co., Ltd. Tokyo Branch (72) Inventor Kenichi Fukuoka 4-chome, Nihonbashi Honcho, Chuo-ku, Tokyo No. 12-20 Inside Sato Kogyo Co., Ltd. (72) Inventor Shigeru Karugome 6-24-1 Nishi Shinjuku, Shinjuku-ku, Tokyo F-term in Sato Kogyo Co., Ltd. Tokyo Branch (reference) 4D059 AA09 BJ01 CB06 CC04 EA01 EA02 EB01 4G035 AB46 AE01 4G037 BC01 BD04 BD07 EA03 4G078 AA03 AB20 BA01 BA11 DA26 DA28 DA30 EA20
Claims (6)
泥装置で解泥し最終的に所望含水比の泥水を得る泥水製
造工程と、この泥水製造工程を経て得られた泥水に固化
材を添加・混練して流動化処理土を製造する固化材混練
工程とからなる流動化処理土の製造方法であって、 前記泥水製造工程は、解泥装置へ供給される泥土の流量
および比重を測定し、これら測定値に基づいて加水量を
算出するとともに、該水量を前記解泥装置に添加しなが
ら前記泥土の解泥を行い、所望含水比よりも低い含水比
の泥水に調整する解泥工程と、 前記解泥工程によって得られた泥水からシルト・粘性土
以外の主に砂、砂礫、貝殻、ガラ等の不純混入物を除去
する選別工程と、 前記選別工程を経た泥水を泥水調整槽に導き、泥水容量
および泥水比重を測定し、これら測定値に基づいて加水
量を算出するとともに、該水量を前記泥水調整槽に添加
・混合し、所望含水比の泥水を得る泥水調整工程とから
なることを特徴とする流動化処理土の製造方法。1. A muddy water producing process in which a muddy mainly composed of a viscous soil is demulsified by a mudifying device while adding water, and finally muddy water having a desired water content ratio is solidified into muddy water obtained through the muddy water producing process. A solidified material kneading step of producing a fluidized treated soil by adding and kneading the material, wherein the muddy water producing step comprises: a flow rate and a specific gravity of the mud supplied to the mud separator. Is measured, the amount of water is calculated based on these measured values, and the mud is demudged while the amount of water is being added to the demulsifier to adjust the muddy water to a muddy water content lower than the desired water content ratio. A mud process; a sorting process for removing mainly impurities such as sand, gravel, shells, and shells other than silt and cohesive soil from the mud obtained by the mud-removing process; Guide the tank, measure the mud volume and mud density, Calculating the amount of water based on these measured values, adding and mixing the amount of water to the muddy water adjusting tank, and a muddy water adjusting step of obtaining a muddy water having a desired water content. Production method.
界値となる粒径７５μｍを目標分級点として選別を行う
請求項１記載の流動化処理土の製造方法。2. The method for producing a fluidized soil according to claim 1, wherein in the sorting step, sorting is performed using a particle size of 75 μm, which is a boundary value between silt and sand, as a target classification point.
よび加水量を検証するようにしてある請求項１〜２いず
れかに記載の流動化処理土の製造方法。3. The method for producing a fluidized soil according to claim 1, wherein the sludge removing apparatus is provided with a load cell so as to verify the mud weight and the amount of water added.
泥装置で解泥し最終的に所望含水比の泥水を得る泥水製
造設備と、この泥水製造設備を経て得られた前記泥水に
固化材を添加・混練して流動化処理土を製造する固化材
混練設備とからなる流動化処理土の製造装置であって、 前記泥水製造設備は、供給される泥土の流量および比重
の測定に基づいて算出された加水量を添加しながら前記
泥土の解泥を行い、所望含水比よりも低い含水比の泥水
に調整する解泥装置と、 前記解泥装置によって得られた泥水からシルト・粘性土
以外の主に砂、砂礫、貝殻、ガラ等の不純混入物を除去
する選別装置と、 前記選別装置を経た泥水が貯留されるとともに、測定さ
れた泥水容量および泥水比重に基づいて算出された加水
量を添加・混合することで所望含水比の泥水を得る泥水
調整槽とを含むことを特徴とする流動化処理土の製造装
置。4. A muddy water production facility for pulverizing mud mainly composed of viscous soil with a pulverizer while adding water, and finally obtaining a muddy water having a desired water content ratio, and the muddy water obtained through the muddy water production equipment. A fluidized treated soil production apparatus comprising a solidified material kneading facility for producing a fluidized treated soil by adding and kneading a solidified material, wherein the muddy water production equipment is used for measuring the flow rate and specific gravity of the supplied mud. Dewatering of the mud while adding the calculated amount of water based on the muddy water to adjust the muddy water content of the lower than the desired water content ratio, muddy water obtained by the demudging device, A sorting device that mainly removes impurities such as sand, gravel, shells, and shells other than soil, and the mud that has passed through the sorting device is stored, and the mud is calculated based on the measured mud volume and mud density. Adding and mixing the amount of water Fluidizing treatment soil preparation device which comprises a mud adjusting tank to obtain a mud water content ratio.
値となる粒径７５μｍを目標分級点とする振動篩い、遠
心分離機または湿式サイクロンを用いる請求項４記載の
流動化処理土の製造装置。5. The method for producing a fluidized soil according to claim 4, wherein a vibrating screen, a centrifugal separator, or a wet cyclone having a target classification point of 75 μm in particle size, which is a boundary value between silt and sand, is used as the sorting device. apparatus.
とともに、材料排出口を有する横型円筒状ドラムの断面
中心位置に水平方向に沿って回転駆動シャフトが配設さ
れるとともに、この回転駆動シャフトに対して、部材長
手方向に適宜の間隔でかつ隣接間で円周方向の固定位置
を互いに異ならせた複数のショベル羽根を備え、かつ前
記横型円筒状ドラムの底部側にチョッパー羽根が配設さ
れた構造の混合機を用いる請求項４、５いずれかに記載
の流動化処理土の製造装置。6. A rotary drive shaft is provided along the horizontal direction at the center of the cross section of a horizontal cylindrical drum having a material input port and a material discharge port. A plurality of shovel blades whose circumferential fixing positions are different from each other at appropriate intervals in the longitudinal direction of the member and adjacent to each other with respect to the shaft, and chopper blades are provided on the bottom side of the horizontal cylindrical drum. The apparatus for producing fluidized soil according to any one of claims 4 and 5, wherein a mixer having a structured structure is used.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001085083A JP2002285572A (en) | 2001-03-23 | 2001-03-23 | Manufacturing method for fluidized treated soil and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001085083A JP2002285572A (en) | 2001-03-23 | 2001-03-23 | Manufacturing method for fluidized treated soil and equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002285572A true JP2002285572A (en) | 2002-10-03 |
Family
ID=18940655
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001085083A Pending JP2002285572A (en) | 2001-03-23 | 2001-03-23 | Manufacturing method for fluidized treated soil and equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002285572A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007014927A (en) * | 2005-07-11 | 2007-01-25 | Takuma Co Ltd | Mud treatment method |
| JP2007190523A (en) * | 2006-01-20 | 2007-08-02 | Ps Mitsubishi Construction Co Ltd | Bagging and dewatering method and its equipment |
| KR100833408B1 (en) | 2003-12-30 | 2008-05-28 | 가부시키가이샤 치다 엔지니어링 | A method and a device for preparing lightweight solidified material, a cylindrical mixer device, a manufacturing device to prepare solidified material, and a device for controlling specific gravity |
| JP2008308837A (en) * | 2007-06-12 | 2008-12-25 | Ohbayashi Corp | Method and system for manufacturing fluidized soil |
| JP2010216205A (en) * | 2009-03-19 | 2010-09-30 | Ryudoka Shori Koho Sogo Kanri:Kk | Concentrated mud, method for manufacturing concentrated mud, and method for manufacturing fluidized treated soil |
| CN102507138A (en) * | 2011-10-24 | 2012-06-20 | 河北钢铁集团矿业有限公司 | Mine-filling pipage test method and special equipment |
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| JP2018025071A (en) * | 2016-08-12 | 2018-02-15 | 大成建設株式会社 | Preparation of fluidized soil, and pressure-feeding method and pressure-feeding system |
| CN110346284A (en) * | 2019-07-19 | 2019-10-18 | 江苏科技大学 | A kind of liquidation slurry attachment characteristic detection device and detection method |
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2001
- 2001-03-23 JP JP2001085083A patent/JP2002285572A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100833408B1 (en) | 2003-12-30 | 2008-05-28 | 가부시키가이샤 치다 엔지니어링 | A method and a device for preparing lightweight solidified material, a cylindrical mixer device, a manufacturing device to prepare solidified material, and a device for controlling specific gravity |
| JP2007014927A (en) * | 2005-07-11 | 2007-01-25 | Takuma Co Ltd | Mud treatment method |
| JP2007190523A (en) * | 2006-01-20 | 2007-08-02 | Ps Mitsubishi Construction Co Ltd | Bagging and dewatering method and its equipment |
| JP2008308837A (en) * | 2007-06-12 | 2008-12-25 | Ohbayashi Corp | Method and system for manufacturing fluidized soil |
| JP2010216205A (en) * | 2009-03-19 | 2010-09-30 | Ryudoka Shori Koho Sogo Kanri:Kk | Concentrated mud, method for manufacturing concentrated mud, and method for manufacturing fluidized treated soil |
| CN102507138A (en) * | 2011-10-24 | 2012-06-20 | 河北钢铁集团矿业有限公司 | Mine-filling pipage test method and special equipment |
| CN104964809A (en) * | 2015-07-16 | 2015-10-07 | 长沙矿山研究院有限责任公司 | Apparatus used for measuring filling slurry pipeline resistance loss parameter and method thereof |
| CN104964809B (en) * | 2015-07-16 | 2018-10-19 | 长沙矿山研究院有限责任公司 | A kind of device and method for measuring filling slurry resistance of ducting loss parameter |
| JP2018025071A (en) * | 2016-08-12 | 2018-02-15 | 大成建設株式会社 | Preparation of fluidized soil, and pressure-feeding method and pressure-feeding system |
| CN110346284A (en) * | 2019-07-19 | 2019-10-18 | 江苏科技大学 | A kind of liquidation slurry attachment characteristic detection device and detection method |
| CN110346284B (en) * | 2019-07-19 | 2024-03-26 | 江苏科技大学 | Fluidized slurry adhesion characteristic detection device and detection method |
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