JP3707064B2 - Mud and powder chemical mixing equipment - Google Patents
Mud and powder chemical mixing equipment Download PDFInfo
- Publication number
- JP3707064B2 JP3707064B2 JP27885296A JP27885296A JP3707064B2 JP 3707064 B2 JP3707064 B2 JP 3707064B2 JP 27885296 A JP27885296 A JP 27885296A JP 27885296 A JP27885296 A JP 27885296A JP 3707064 B2 JP3707064 B2 JP 3707064B2
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- mud
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- 239000000126 substance Substances 0.000 title claims description 67
- 239000000843 powder Substances 0.000 title claims description 32
- 239000003381 stabilizer Substances 0.000 claims description 19
- 239000003795 chemical substances by application Substances 0.000 description 18
- 238000007711 solidification Methods 0.000 description 16
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- 238000009412 basement excavation Methods 0.000 description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 3
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- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
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- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 description 1
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
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- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 1
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
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- VNSBYDPZHCQWNB-UHFFFAOYSA-N calcium;aluminum;dioxido(oxo)silane;sodium;hydrate Chemical compound O.[Na].[Al].[Ca+2].[O-][Si]([O-])=O VNSBYDPZHCQWNB-UHFFFAOYSA-N 0.000 description 1
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 description 1
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- KWLMIXQRALPRBC-UHFFFAOYSA-L hectorite Chemical compound [Li+].[OH-].[OH-].[Na+].[Mg+2].O1[Si]2([O-])O[Si]1([O-])O[Si]([O-])(O1)O[Si]1([O-])O2 KWLMIXQRALPRBC-UHFFFAOYSA-L 0.000 description 1
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Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/28—Dredgers; Soil-shifting machines mechanically-driven with digging tools mounted on a dipper- or bucket-arm, i.e. there is either one arm or a pair of arms, e.g. dippers, buckets
- E02F3/36—Component parts
- E02F3/40—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets
- E02F3/402—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with means for facilitating the loading thereof, e.g. conveyors
- E02F3/404—Dippers; Buckets ; Grab devices, e.g. manufacturing processes for buckets, form, geometry or material of buckets with means for facilitating the loading thereof, e.g. conveyors comprising two parts movable relative to each other, e.g. for gripping
Description
【0001】
【発明の属する技術分野】
本発明は新規な泥土と粉末薬品の混合装置、さらに詳しくは、例えば泥土の固化処理などに使用され、必要最適量の粉末薬品を粉塵をあまり生じさせることなく、連続的に泥土に添加して混合する装置に関するものである。
【0002】
【従来の技術】
河川、湖、沼などの浚渫土や、ヘドロ、スラッジ類などを処分する場合、水分含有量が多く流動性に富むため、通常のダンプトラックなどによる運搬作業を困難なものとしている。このため、従来はこれら浚渫土や、ヘドロ、スラッジ類などを、数カ月間中間処理場で自然脱水したり、石灰又はセメント系の固化剤、あるいは高分子系固化剤を混合して処理している。
石灰又はセメント系固化剤を用いて、含水率の高い浚渫土や、ヘドロ、スラッジ類などを処理する場合、処理後の泥土などが流動性を失って、取り扱いが容易な強度に達するまでには通常数十時間を要する。また、100kg/m3以上の大量の固化剤を添加しなければ、含水率の高い浚渫土や、ヘドロ、スラッジ類などを処理できないという問題がある。
これに対し、高分子系固化剤を用いて、含水率の高い浚渫土や、ヘドロ、スラッジ類などを処理する場合、高分子系固化剤を添加したのち、数分以内と短時間で流動性を失うことから、近年固化改質剤として、この高分子系のものが多用されている。
また、浚渫土埋立地や軟弱地盤などの安定化処理においても、前記固化剤が用いられている。
このような固化剤などの薬品を泥土(ヘドロやスラッジ類も含む)に添加し、混合する装置としては、該薬品が液体状である場合には、バックホーの車体に液体薬品を収容するタンクと該薬品を供給するポンプを搭載し、薬品供給管をバックホーのブームに沿って取付け、その先端に散布ノズルを装着して成る、薬品の連続供給が可能なバックホーと一体化した混合装置が提案されている(実開平1−164339号公報)。
一方、粉末薬品の場合には、粉末薬品供給システムを取付け、薬品の連続供給が可能なバックホーと一体化した混合装置は、これまで知られていない。これは、粉末薬品供給システムを、前記液体薬品の場合と同様に、本体後部に取付け、粉末を連続的に供給するには、乗継ぎを必要とし、技術的に難しいからである。したがって、粉末薬品を泥土に添加する方法としては、別途エア移送により、連続的に供給する方法、あるいはフレコンパックなどにより、バッチ式に添加する方法などが一般的に採用されている。
しかしながら、エア移送で粉末を連続的に供給する方法においては、装置が大型で複雑になり、かつ粉塵が生じるのを免れないなどの問題がある。また、フレコンパックなどによるバッチ式添加方法においては、人手を要し、手間がかかる上、粉塵が生じやすいなどの問題がある。
【0003】
【発明が解決しようとする課題】
本発明は、このような事情のもとで、例えば泥土の固化処理などに使用され、必要最適量の粉末薬品を、粉塵をあまり生じさせることなく、泥土に連続的に添加して均質に混合しうる、粉末薬品供給システムが取付けられたバックホーと一体化して成る混合装置を提供することを目的としてなされたものである。
【0004】
【課題を解決するための手段】
本発明者らは、前記目的を達成するために鋭意研究を重ねた結果、バケットスタビライザーを装着して成るバックホーのブームに粉末薬品供給システムを取付け、一体化した装置が、その目的に適合しうることを見い出し、この知見に基づいて本発明を完成するに至った。
すなわち、本発明は、ブームに連結したアームの先端部にバケットスタビライザーを装着して成るバックホーを有する装置において、上記ブームに粉末薬品タンク及び粉末薬品供給装置を取付けるとともに、この供給装置に連結し、粉末薬品を泥土に添加するための薬品供給管をアームに沿って取付けたことを特徴とする泥土と粉末薬品の混合装置を提供するものである。
【0005】
【発明の実施の形態】
本発明の混合装置は、泥土と粉末薬品を均質に混合するためのバックホーを有する装置であって、このバックホーは、ブームと、それに連結したアームと、その先端部に装着されたバケットスタビライザーと、該ブームに取付けられた粉末薬品タンク及び粉末薬品供給装置と、この供給装置に連結し、アームに沿って取付けられた粉末薬品供給管と、トラクタなどの車輌に搭載された本体(油圧ユニット、発電機なども含む)から構成されている。
次に、添付図面に従って、本発明の混合装置について説明する。
図1は、本発明の混合装置の1例の側面図であって、バックホーAは、キャビン2及び発電機10を有する本体1と、粉末薬品タンク4及び粉末薬品をタンク4から供給するための装置6が取付けられているブーム3と、このブーム3と連結し、作用する中心近くに、折り曲がり点が設置されたアーム5と、このアーム5に沿って取付けられ、上記粉末薬品供給装置6にフレキシブルチューブ8を介して連結している粉末薬品供給管7と、アーム5の先端部に装着されたバケットスタビライザー9とから構成されている。粉末薬品供給装置6はスクリュー・コンベアー方式が用いられるが、そのブレードはスクリュー、スプリング、リボンのいずれであってもよい。そしてブーム3とアーム5は、キャビン2内から泥土と薬品の混合状態を良く確認できるような位置に取付けられている。
粉末薬品供給装置6は、キャビン2内でオン・オフ操作及び供給量のコントロールが可能であり、この供給装置6により、タンク4内の粉末薬品を粉末薬品供給管7を介して、必要最適量を連続的に泥土に添加することが可能である。泥土に連続的に添加される粉末薬品は、バケットスタビライザー9によって、泥土と均質に混合される。
図2(a)は、バケットスタビライザー9の平面図であり、図2(b)は、バケットスタビライザーの手前側板を除いた状態の側面図である。バケットスタビライザー9の先端には、掘削用ブレード11が設けられ、バケットスタビライザー内には回転式の混合ブレード12が設けられている。混合ブレードはチェーン13により駆動され、その回転運動によって、泥土と粉末薬品が混合される。
図3は、本発明の混合装置におけるバケットスタビライザーにより、泥土と粉末薬品を混合する一態様の説明図である。泥土に粉末薬品を添加し、図3(a)に示すように、粉末薬品が添加された泥土を混合ブレードを停止した状態でバケットスタビライザーにより掘削する。バケットスタビライザーに泥土が満杯になった状態で、図3(b)に示すように、混合ブレードを回転しながらバケットスタビライザーを引き上げる。泥土と粉末薬品を混合し、図3(c)に示すように、バケットスタビライザー内から混合土を排出する。また粉末薬品を供給しながら掘削を行うこともできる。混合ブレードを回転することにより、泥土と粉末薬品を短時間で均質に混合することができるので、添加した粉末薬品を効果的に作用させることができる。
【0006】
本発明の混合装置は、泥土と粉末薬品を混合して泥土を改質する処理方法であれば、いずれの処理方法に対しても適用できるが、特に泥土の固化処理に適用するのが好ましい。ここで、泥土の固化処理としては、例えば、河川、湖、沼などの浚渫土や、ヘドロ、スラッジ類などの含水率の高いものを、運搬作業を容易にするために固化させる処理、浚渫土埋立地や軟弱地盤などを安定化させるための固化処理、植栽地盤の土壌を改良するための固化処理、建物、構造物の基礎工事としての固化処理、道路の路床改良のための固化処理、造地造成、ゴルフ場造成のための固化処理などが挙げられる。
また、泥土の改質に用いられる粉末薬品については、特に制限はなく、従来泥土改質に慣用されている種々のものを用いることができる。この粉末薬品としては、例えば粉末状の高分子系固化剤、無機水硬性物質、無機多孔性物質、膨潤性粘土鉱物などが挙げられる。ここで、高分子系固化剤としては、水溶性高分子化合物、例えばデンプン、マンナン、アルギン酸ソーダ、ローカストビーンガム、グアーガム、ペクチン、キサンタンガム、デキストラン、ゼラチン、ラムザンガム、ジェランガムなどの天然水溶性高分子化合物、ビスコース、メチルセルロース、エチルセルロース、カルボキシメチルセルロース、ヒドロキシプロピルセルロース、カチオン化セルロース、α化デンプン、カルボキシルデンプン、ジアルデヒドデンプン、カチオン化デンプン、デキストリン、ブリティシュゴム、カチオン化グアーガム、アニオン化グアーガム、メチルグリコールキトサンなどの半合成水溶性高分子化合物、ポリビニルアルコール、ポリビニルピロリドン、ポリ(メタ)アクリルアミド、ポリ(メタ)アクリル酸ソーダ、ポリエチレンオキサイド、ポリビニルメチルエーテルなどの合成高分子化合物などを挙げることができる。
また、無機水硬化性物質としては、水硬性を示す無機物質であれば、その種類を問わず使用することができる。このような物質としては、例えば、半水石膏、普通ポルトランドセメント、速硬性ポルトランドセメント、高炉セメント、その他の改良されたポルトランドセメント、アルミナセメント、カルシウムセメント、フライアッシュやポゾランを含有するセメント類、生石灰、消石灰、石灰系の土質改質剤などを挙げることができる。さらに無機多孔性物質としては、例えば、ゼオライト、パーライト、バーミキュライト、珪藻土焼成物、粘土鉱物多孔質焼成物、ケイ酸カルシウム焼成物などを挙げることができる。一方、膨潤性粘土鉱物としては、例えばモンモリロナイト、バイデライト、ノントロナイト、サポナイト、ヘクトライト、ソーコナイト、スチーブンサイト、膨潤性雲母などを挙げることができる。
これらの粉末薬品は単独で用いてもよいし、2種以上を組み合わせて用いてもよい。また、本発明の混合装置においては、この粉末薬品として、高分子系固化剤が好ましく用いられる。
【0007】
【実施例】
次に、本発明を実施例によりさらに詳細に説明する。
実施例
地下鉄シールド工事現場より、掘削泥土を採取した。この掘削泥土は含水率60重量%であり、固形分中粒径75μm未満のシルト、粘土分が29重量%、粒径75μm以上の砂分が47重量%であった。このものは、そのままではダンプによる搬出ができない泥状のものであるので、固化処理が必要である。
図1に示す混合装置を用い、その粉末薬品タンク4に、粉末状高分子系固化剤クリサットC−101[栗田工業(株)製]15kgを投入し、上記掘削泥土5m3にこの高分子系固化剤を連続的に添加しながら、バケットスタビライザー9により、掘削泥土と高分子系固化剤とを5分間混合した。
その結果、粉末状高分子系固化剤の添加量は、トータルで15kgであり、粉塵がほとんど生じることなく、掘削泥土と粉末状高分子系固化剤とが極めて均質に混合された。
また、混合直後の処理土を、モールドに充填して突き固めたのち、下面の直径100mm、上面の直径70mm、高さ60mmの円錘台で整形して試供体を作成した。次に、この試供体に、フローテーブル測定器により、50回の振動を与え、その拡がりを測定した。その結果、底部の拡がりは105×104mmで5%以下であり(10%以下であれば、運搬、山積みが可能)、ダンプにより処理土として搬出できた。
【0008】
【発明の効果】
本発明の混合装置は、バックホーに粉末薬品供給システムを取付け、一体化したものであって、粉末薬品タンクの小型化が可能で、かつ必要最適量の粉末薬品を連続的に泥土に添加しうる上、泥土と粉末薬品を極めて均質に混合することができ、泥土を所望の性状に容易に改質することができる。また、本発明の混合装置を使用することにより、粉末薬品の添加による粉塵の発生を大幅に抑制することができる。
本発明の混合装置は、例えば、河川、湖、沼などの浚渫土や、ヘドロ、スラッジ類などの含水率の高いものを、運搬作業を容易にするために固化させる処理、浚渫土埋立地や軟弱地盤などを安定化させるための固化処理、植栽地盤の土壌を改良するための固化処理、建物、構造物の基礎工事としての固化処理、道路の路床改良のための固化処理、造地造成、ゴルフ場造成のための固化処理などに好ましく用いられる。
【図面の簡単な説明】
【図1】図1は、本発明の混合装置の1例の側面図である。
【図2】図2は、本発明の混合装置におけるバケットスタビライザーの1例の平面図及び側面図である。
【図3】図3は、本発明の混合装置におけるバケットスタビライザーにより、泥土と粉末薬品を混合する一態様の説明図である。
【符号の説明】
1 バックホーの本体
2 キャビン
3 ブーム
4 粉末薬品タンク
5 アーム
6 粉末薬品供給装置
7 粉末薬品供給管
8 フレキシブルチューブ
9 バケットスタビライザー
10 発電機
11 掘削用ブレード
12 混合ブレード
13 チェーン
A バックホー[0001]
BACKGROUND OF THE INVENTION
The present invention is a novel mixing device for mud and powdered chemicals. More specifically, for example, it is used for solidification processing of mud and the necessary optimum amount of powdered chemicals is continuously added to mud without causing much dust. It relates to a mixing device.
[0002]
[Prior art]
When disposing of dredged soil such as rivers, lakes, and swamps, sludge, sludge, etc., it has a high water content and high fluidity, making it difficult to carry by ordinary dump trucks. For this reason, conventionally, these dredged soil, sludge, sludge, etc. are naturally dehydrated for several months at an intermediate treatment plant, or mixed with lime or cement-based solidifying agent or polymer-based solidifying agent. .
When processing dredged soil with high moisture content, sludge, sludge, etc. using lime or cement-based solidifying agent, the mud soil after processing loses its fluidity and reaches a strength that can be easily handled. Usually several tens of hours are required. In addition, there is a problem in that dredged soil, sludge, sludge and the like having a high water content cannot be treated unless a large amount of solidifying agent of 100 kg / m 3 or more is added.
On the other hand, when processing high-water content clay, sludge, sludge, etc. using a polymeric solidifying agent, the fluidity can be reached within a few minutes after adding the polymeric solidifying agent. In recent years, this polymer type is often used as a solidification modifier.
Moreover, the said solidifying agent is used also in stabilization processing, such as dredged land and soft ground.
As a device for adding and mixing chemicals such as solidifying agents to mud (including sludge and sludges), if the chemical is in liquid form, a tank for storing the liquid chemical in the body of the backhoe A mixing device integrated with a backhoe capable of continuous supply of chemicals is proposed, which is equipped with a pump for supplying the chemicals, a chemical supply pipe is mounted along the boom of the backhoe, and a spray nozzle is attached to the tip of the boom. (Japanese Utility Model Laid-Open No. 1-164339).
On the other hand, in the case of powdered chemicals, a mixing device integrated with a backhoe capable of continuously supplying chemicals with a powdered chemical supply system has not been known so far. This is because, as in the case of the liquid chemical, the powder chemical supply system is attached to the rear part of the main body, and it is technically difficult to continuously supply the powder, which requires a connection. Therefore, as a method for adding the powdered chemical to the mud, a method of continuously supplying it separately by air transfer or a method of adding it in a batch manner using a flexible container pack or the like is generally employed.
However, in the method of continuously supplying powder by air transfer, there is a problem that the apparatus is large and complicated, and dust is unavoidable. In addition, the batch-type addition method using a flexible container pack has problems such as requiring manpower and labor, and easily generating dust.
[0003]
[Problems to be solved by the invention]
Under such circumstances, the present invention is used for, for example, mud solidification processing, and the necessary and optimum amount of powdered chemical is continuously added to the mud without causing much dust and mixed uniformly. It is an object of the present invention to provide a mixing device integrated with a backhoe to which a powder chemical supply system is attached.
[0004]
[Means for Solving the Problems]
As a result of intensive studies to achieve the above object, the inventors of the present invention can attach a powder chemical supply system to a backhoe boom equipped with a bucket stabilizer, and an integrated device can meet the purpose. Based on this finding, the present invention has been completed.
That is, the present invention is a device having a backhoe formed by attaching a bucket stabilizer to the tip of an arm connected to a boom, and attaches a powder chemical tank and a powder chemical supply device to the boom, and connects to the supply device. An apparatus for mixing mud and powdered chemicals is provided, wherein a chemical supply pipe for adding powdered chemicals to mud is attached along an arm.
[0005]
DETAILED DESCRIPTION OF THE INVENTION
The mixing device of the present invention is a device having a backhoe for homogeneously mixing mud and powdered chemicals, and this backhoe includes a boom, an arm connected to the boom, and a bucket stabilizer attached to the tip of the boom. Powder chemical tank and powder chemical supply device attached to the boom, a powder chemical supply pipe connected to the supply device and attached along the arm, and a main body (hydraulic unit, power generation unit) mounted on a vehicle such as a tractor Machine).
Next, the mixing apparatus of the present invention will be described with reference to the accompanying drawings.
FIG. 1 is a side view of an example of a mixing apparatus according to the present invention. A backhoe A is used to supply a main body 1 having a cabin 2 and a
The powder chemical supply device 6 can be turned on / off in the cabin 2 and the supply amount can be controlled. By this supply device 6, the powder chemical in the tank 4 is supplied via the powder chemical supply pipe 7 to the necessary optimum amount. Can be continuously added to the mud. The powder chemical continuously added to the mud is homogeneously mixed with the mud by the
FIG. 2A is a plan view of the
FIG. 3 is an explanatory view of one mode of mixing mud and powdered chemicals with a bucket stabilizer in the mixing apparatus of the present invention. Powdered chemicals are added to the mud, and the mud containing the powdered chemicals is excavated by a bucket stabilizer with the mixing blade stopped as shown in FIG. In a state where the bucket stabilizer is full of mud, as shown in FIG. 3B, the bucket stabilizer is pulled up while rotating the mixing blade. The mud and the powdered chemical are mixed, and the mixed soil is discharged from the bucket stabilizer as shown in FIG. Drilling can also be performed while supplying powdered chemicals. By rotating the mixing blade, the mud and the powder chemical can be homogeneously mixed in a short time, so that the added powder chemical can be effectively operated.
[0006]
The mixing apparatus of the present invention can be applied to any processing method as long as it is a processing method for modifying mud by mixing mud and powdered chemicals, but is particularly preferably applied to mud solidification processing. Here, as the solidification treatment of mud, for example, a dredged soil such as rivers, lakes, and swamps, a sludge, sludges and the like with a high water content are solidified to facilitate transportation work, and dredged soil. Solidification treatment to stabilize landfills and soft ground, solidification treatment to improve soil on planting ground, solidification treatment as foundation work for buildings and structures, solidification treatment for road subgrade improvement , Land preparation, and solidification treatment for golf course creation.
Moreover, there is no restriction | limiting in particular about the powder chemical | medical agent used for modification | reformation of a mud, The various thing conventionally used for the mud modification can be used. Examples of the powder chemical include a powdery polymer solidifying agent, an inorganic hydraulic substance, an inorganic porous substance, and a swellable clay mineral. Here, as the polymer solidifying agent, water-soluble polymer compounds such as starch, mannan, sodium alginate, locust bean gum, guar gum, pectin, xanthan gum, dextran, gelatin, lambzan gum, gellan gum and the like. , Viscose, Methylcellulose, Ethylcellulose, Carboxymethylcellulose, Hydroxypropylcellulose, Cationized cellulose, Pregelatinized starch, Carboxyl starch, Dialdehyde starch, Cationized starch, Dextrin, British gum, Cationized guar gum, Anionized guar gum, Methyl glycol chitosan Semi-synthetic water-soluble polymer compounds such as polyvinyl alcohol, polyvinyl pyrrolidone, poly (meth) acrylamide, poly (meth) acrylate , And the like polyethylene oxide, synthetic polymer compounds such as polyvinyl methyl ether.
Moreover, as an inorganic water curable substance, if it is an inorganic substance which shows hydraulic property, it can be used regardless of the kind. Such materials include, for example, hemihydrate gypsum, ordinary Portland cement, fast-setting Portland cement, blast furnace cement, other improved Portland cement, alumina cement, calcium cement, cements containing fly ash and pozzolans, quicklime Slaked lime, lime-based soil modifier, and the like. Furthermore, examples of the inorganic porous material include zeolite, perlite, vermiculite, diatomaceous earth fired product, clay mineral porous fired product, calcium silicate fired product, and the like. On the other hand, examples of the swellable clay mineral include montmorillonite, beidellite, nontronite, saponite, hectorite, soconite, stevensite, and swellable mica.
These powder chemicals may be used alone or in combination of two or more. In the mixing apparatus of the present invention, a polymer solidifying agent is preferably used as the powder chemical.
[0007]
【Example】
Next, the present invention will be described in more detail with reference to examples.
Example Excavated mud was collected from the subway shield construction site. This excavated mud had a moisture content of 60% by weight, a silt having a particle size of less than 75 μm in the solid content, 29% by weight of clay, and 47% by weight of sand having a particle size of 75 μm or more. Since this is a mud that cannot be dumped as it is, solidification is required.
Using the mixing apparatus shown in FIG. 1, 15 kg of powdery polymer solidifying agent Chrysat C-101 [manufactured by Kurita Kogyo Co., Ltd.] is introduced into the powder chemical tank 4, and the polymer system is added to 5 m 3 of the excavation mud While continuously adding the solidifying agent, the excavation mud and the polymeric solidifying agent were mixed for 5 minutes by the
As a result, the total amount of the powdered polymer-based solidifying agent was 15 kg, and the drilling mud and the powdered polymer-based solidifying agent were mixed very homogeneously with almost no dust.
The treated soil immediately after mixing was filled into a mold and tamped, and then shaped by a frustum having a lower surface diameter of 100 mm, an upper surface diameter of 70 mm, and a height of 60 mm to prepare a sample. Next, this sample was subjected to 50 vibrations using a flow table measuring instrument, and its spread was measured. As a result, the expansion of the bottom portion was 105 × 104 mm and 5% or less (if it was 10% or less, it could be transported and piled up), and it could be carried out as treated soil by dumping.
[0008]
【The invention's effect】
The mixing device of the present invention is an integrated unit with a powder chemical supply system attached to the backhoe, which can reduce the size of the powder chemical tank and can continuously add the necessary and optimum amount of powder chemical to the mud. In addition, the mud and the powdered chemical can be mixed very homogeneously, and the mud can be easily modified to a desired property. Moreover, generation | occurrence | production of the dust by addition of a powder chemical | medical agent can be significantly suppressed by using the mixing apparatus of this invention.
The mixing device of the present invention is, for example, a process for solidifying dredged soil such as rivers, lakes, swamps, sludges, sludges, etc., in order to facilitate transportation work, Solidification treatment to stabilize soft ground, solidification treatment to improve soil of planting ground, solidification treatment as foundation work for buildings and structures, solidification treatment for road subgrade improvement, land preparation It is preferably used for solidification treatment for creation and golf course creation.
[Brief description of the drawings]
FIG. 1 is a side view of an example of a mixing apparatus according to the present invention.
FIG. 2 is a plan view and a side view of an example of a bucket stabilizer in the mixing apparatus of the present invention.
FIG. 3 is an explanatory view of an embodiment in which mud and powdered chemicals are mixed by a bucket stabilizer in the mixing apparatus of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Backhoe body 2 Cabin 3 Boom 4 Powdered chemical tank 5 Arm 6 Powdered chemical supply device 7 Powdered chemical supply pipe 8
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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JP27885296A JP3707064B2 (en) | 1996-09-30 | 1996-09-30 | Mud and powder chemical mixing equipment |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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JP27885296A JP3707064B2 (en) | 1996-09-30 | 1996-09-30 | Mud and powder chemical mixing equipment |
Publications (2)
Publication Number | Publication Date |
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JPH10102528A JPH10102528A (en) | 1998-04-21 |
JP3707064B2 true JP3707064B2 (en) | 2005-10-19 |
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JP27885296A Expired - Fee Related JP3707064B2 (en) | 1996-09-30 | 1996-09-30 | Mud and powder chemical mixing equipment |
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Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
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AUPP183498A0 (en) * | 1998-02-17 | 1998-03-12 | Adelaide Brighton Limited | Method and apparatus for incorporating binders during stabilisation |
DE19950435C1 (en) * | 1999-10-19 | 2001-03-29 | Dietmar Mothes Gmbh Strasen Un | Road surfacing machine has a pressure vessel containing a bonding agent linked through a control to the scoop separator to mix the topsoil with the agent and also separate boulders and stones in restricted spaces |
DE20108727U1 (en) * | 2001-05-25 | 2001-08-30 | Schenk Juergen | Tool for excavating and preparing surface layers, soil or rocky ground |
CN106926343A (en) * | 2017-04-25 | 2017-07-07 | 泉州市劲力工程机械有限公司 | A kind of multipurpose agitating device for being applied to site construction |
WO2020188035A1 (en) * | 2019-03-19 | 2020-09-24 | Suez Groupe | Method for processing excavated material |
CN115340269A (en) * | 2022-08-22 | 2022-11-15 | 东南大学 | Rural river sediment solidification conditioning and resource utilization method |
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