JPH0920889A - Material for improving drilled sludge - Google Patents
Material for improving drilled sludgeInfo
- Publication number
- JPH0920889A JPH0920889A JP7194158A JP19415895A JPH0920889A JP H0920889 A JPH0920889 A JP H0920889A JP 7194158 A JP7194158 A JP 7194158A JP 19415895 A JP19415895 A JP 19415895A JP H0920889 A JPH0920889 A JP H0920889A
- Authority
- JP
- Japan
- Prior art keywords
- soil
- mud
- water
- modifier
- added
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Treatment Of Sludge (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、掘削泥土の改質剤
に関する。さらに詳しくは、本発明は、石油井、ガス
井、地熱井、トンネル工事、浚渫工事、建設工事、その
他の工事現場で発生する掘削泥土や、ヘドロ、スラッジ
類を、再利用または廃棄が容易な形態に改質することが
できる掘削泥土の改質剤に関する。[0001] The present invention relates to a modifier for excavated mud. More specifically, the present invention makes it easy to reuse or dispose of excavated mud, sludge, and sludge generated at oil wells, gas wells, geothermal wells, tunnel construction, dredging construction, construction work, and other construction sites. The present invention relates to a drilling mud modifier that can be modified into a form.
【０００２】[0002]
【従来の技術】土木工事、建設工事、浚渫工事等におい
て発生する掘削泥土は、含水量が多く流動性に富むた
め、通常のダンプカーやトラック等による運搬作業を困
難なものとしている。このため、従来はこれら含水泥土
に石灰あるいはセメント系の固化剤を混合して処理した
り、水溶性高分子化合物または高吸水性樹脂を混合して
処理している。石灰あるいはセメント系固化剤を用い
て、含水率の高い掘削泥土を処理する場合、処理後の掘
削泥土が流動性を失い、取扱いが容易な強度に達するま
でには通常数十時間を要し、また、掘削泥土１ｍ3当た
り１００kg以上の大量の固化剤を添加しなければ、高含
水率の掘削泥土を処理できないという問題がある。一
方、水溶性高分子化合物または高吸水性樹脂等のみを用
いて、含水率の高い掘削泥土を処理する場合、処理後の
掘削泥土が流動性を失うまでの時間は、水溶性高分子化
合物または高吸水性樹脂添加後数分以内と短時間である
が、掘削泥土の含水率が非常に高い場合や、掘削泥土が
粘性土または有機性土である場合、処理土の強度が十分
には高くならないという欠点がある。2. Description of the Related Art Excavated mud generated in civil engineering work, construction work, dredging work, etc., has a high water content and a high fluidity, which makes it difficult to carry it by ordinary dump trucks and trucks. For this reason, conventionally, hydrated or cement-based solidifying agents are mixed with these hydrous mud and treated, or a water-soluble polymer compound or super absorbent polymer is treated. When treating excavated mud with a high water content using lime or a cement-based solidifying agent, the excavated mud after treatment loses fluidity and usually takes several tens of hours until it reaches a strength that is easy to handle, In addition, there is a problem that a high water content excavated mud cannot be treated unless a large amount of solidifying agent of 100 kg or more per 1 m 3 of excavated mud is added. On the other hand, when the excavated mud having a high water content is treated using only the water-soluble polymer compound or the superabsorbent resin, the time until the excavated mud after treatment loses the fluidity is Although it is a short time within a few minutes after adding the super absorbent resin, the strength of the treated soil is sufficiently high when the water content of the excavated mud is very high or the excavated mud is cohesive soil or organic soil. It has the drawback of not becoming.
【０００３】[0003]
【発明が解決しようとする課題】本発明は、含水量の多
い掘削泥土に添加することにより、短時間でその流動性
を失わせ、強度が大きく再利用の容易な処理土とするこ
とができる掘削泥土の改質剤を提供することを目的とし
てなされたものである。According to the present invention, by adding it to excavated mud having a high water content, its fluidity is lost in a short time, and a treated soil having high strength and easy reuse can be obtained. The purpose is to provide a modifier for excavated mud.
【０００４】[0004]
【課題を解決するための手段】本発明者は、上記の課題
を解決すべく鋭意研究を重ねた結果、掘削泥土の改質剤
に椰子屑（Ｃｏｉｒ ｐｉｔｈ）を含有せしめることに
より、椰子屑（Ｃｏｉｒ ｐｉｔｈ）の有する吸水効
果、繊維構造による補強効果等により、短時間で取扱い
の容易な処理土が得られることを見いだし、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、（１）椰子屑（Ｃｏｉｒ ｐｉｔｈ）を含有するこ
とを特徴とする掘削泥土の改質剤を提供するものであ
る。さらに、本発明の好ましい態様として、（２）水溶
性高分子化合物を含有する第(１)項記載の掘削泥土の改
質剤、（３）水溶性高分子化合物が天然水溶性高分子化
合物である第(２)項記載の掘削泥土の改質剤、（４）椰
子屑（Ｃｏｉｒ ｐｉｔｈ）と水溶性高分子化合物の重
量比が、１：１〜１００：１である第(２)〜(３)項記載
の掘削泥土の改質剤、（５）無機水硬性物質、無機多孔
性物質および膨潤性粘土鉱物から選ばれる１種または２
種以上の物質を含有する第(１)〜(４)項記載の掘削泥土
の改質剤、および、（６）椰子屑（Ｃｏｉｒ ｐｉｔ
ｈ）と無機水硬性物質、無機多孔性物質および膨潤性粘
土鉱物の重量比が、１：６０〜２０：１である第(５)項
記載の掘削泥土の改質剤、を挙げることができる。Means for Solving the Problems As a result of intensive studies to solve the above-mentioned problems, the present inventor has added a palm scrap (Coir pit) to a modifier for excavated mud to make a palm scrap ( It was found that the treated soil which can be easily handled in a short time can be obtained due to the water absorption effect of the core pit), the reinforcing effect by the fiber structure, etc., and the present invention has been completed based on this finding. That is, the present invention provides (1) a modifier for excavated mud, which is characterized by containing coconut trash. Further, as a preferred embodiment of the present invention, (2) a modifier for excavated mud containing the water-soluble polymer compound according to (1), and (3) the water-soluble polymer compound is a natural water-soluble polymer compound. (4) The modifier for excavated mud according to the item (2), (4) The weight ratio of the palm waste (Coir pit) to the water-soluble polymer compound is 1: 1 to 100: 1. One or two selected from (3) modifier for excavated mud, (5) inorganic hydraulic substance, inorganic porous substance and swelling clay mineral
A modifier for excavated mud according to any one of (1) to (4), which contains at least one kind of substance, and (6) Palm dust (Coir pit).
h) and the inorganic hydraulic substance, the inorganic porous substance, and the swelling clay mineral in a weight ratio of 1:60 to 20: 1. .
【０００５】本発明の改質剤は、石油井、ガス井、地熱
井、トンネル工事、浚渫工事、建設工事、その他の工事
現場で発生する掘削泥土や、ヘドロ、スラッジ類の改質
に使用することができる。本発明の改質剤によって処理
することができる掘削泥土の含水率の上限は特に問わ
ず、例えば、含水率が９０重量％に達するような高含水
率の掘削泥土も処理することができる。掘削泥土に対す
る改質剤の添加量は、掘削泥土の性状および所望する処
理土の性状により適切に選ぶことができるが、通常は掘
削泥土に対し３０重量％以下で十分である。本発明に用
いる椰子屑（Ｃｏｉｒ ｐｉｔｈ）は、ココヤシの実の
中果皮より繊維を採取したあとに残される、通常淡褐色
ないし暗褐色の短繊維状ないし粉状物質である。その性
状などは、Ａｌａｎ Ｗ. Ｍｅｅｒｏｗによって、「Ｔ
ｒｏｐｉｃＬｉｎｅ」 第６巻、第２号、第１〜４頁
（１９９３年）に紹介されているが、多量のリグニン及
びセルロースを含有し、吸水性を有する多孔性の物質で
ある。椰子屑（Ｃｏｉｒ ｐｉｔｈ）は、その特性とし
て吸水効果を有し、また繊維構造によって補強効果を発
揮する。掘削泥土に椰子屑（Ｃｏｉｒ ｐｉｔｈ）を添
加することにより急速に掘削泥土中の水分が吸収され、
処理土は繊維によって補強されるので、強度の大きい、
取扱いやすい固化した処理土が得られる。The reforming agent of the present invention is used for reforming excavated mud, sludge and sludge generated in oil wells, gas wells, geothermal wells, tunnel construction, dredging construction, construction construction and other construction sites. be able to. The upper limit of the water content of the excavated mud which can be treated by the modifier of the present invention is not particularly limited. For example, excavated mud having a high moisture content such that the water content reaches 90% by weight can also be treated. The amount of the modifier added to the excavated mud can be appropriately selected depending on the properties of the excavated mud and the properties of the desired treated soil, but usually 30% by weight or less based on the excavated mud is sufficient. The palm dust (Coir pit) used in the present invention is a light-brown or dark-brown short fibrous or powdery substance that is usually left after collecting fibers from the mesocarp of coconut. Alan W. Meerow describes its properties, etc.
“RopicLine”, Volume 6, No. 2, pages 1 to 4 (1993), it is a porous substance containing a large amount of lignin and cellulose and having water absorbency. Coconut waste has a water absorbing effect as its characteristic, and exhibits a reinforcing effect due to its fiber structure. Water in the excavated mud is rapidly absorbed by adding palm dust (Coir pit) to the excavated mud,
Since the treated soil is reinforced by fibers, it has high strength,
A solidified treated soil that is easy to handle is obtained.
【０００６】本発明の掘削泥土の改質剤には、必要に応
じて水溶性高分子化合物を含有せしめることができる。
使用する水溶性高分子化合物には特に制限はなく、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
ガム等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、ブリティッシュゴム、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等の半合
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等の合成高分子化合物等を挙げる
ことができる。これらの水溶性高分子化合物は、１種を
単独で使用することができ、あるいは２種以上を併用す
ることができる。水溶性高分子化合物は、増粘効果、吸
水効果、凝集効果等を有し、椰子屑（Ｃｏｉｒ ｐｉｔ
ｈ）を含有する掘削泥土の改質剤に含有せしめたとき、
効果的に掘削泥土を強度の大きい処理土に変換する。本
発明においては、椰子屑（Ｃｏｉｒ ｐｉｔｈ）と水溶
性高分子化合物の割合は、重量比で１：１〜１００：１
であることが好ましく、３：１〜３０：１であることが
さらに好ましい。これらの水溶性高分子化合物以外の物
質であっても、親水性であり、かつ増粘性、吸水性、凝
集性等を有する物質は、本発明に効果的に用いることが
できる。The modifying agent for excavated mud of the present invention may contain a water-soluble polymer compound, if necessary.
There is no particular limitation on the water-soluble polymer compound used, for example, starch, mannan, sodium alginate, locust bean gum, guar gum, pectin, xanthan gum, dextran, gelatin, ramzan gum, natural water-soluble polymer compounds such as gellan gum, bis. Of course, methyl cellulose, ethyl cellulose, carboxymethyl cellulose, hydroxypropyl cellulose, cationized cellulose, pregelatinized starch, carboxyl starch, dialdehyde starch, cationized starch, dextrin, British gum, cationized guar gum, anionized guar gum, methyl glycol chitosan, etc. Semi-synthetic water-soluble polymer, polyvinyl alcohol, polyvinylpyrrolidone, poly (meth) acrylamide, poly (meth) acrylic acid soda, Ethylene oxide, synthetic polymer compound of polyvinyl methyl ether and the like. These water-soluble polymer compounds may be used alone or in combination of two or more. The water-soluble polymer compound has a thickening effect, a water absorbing effect, an aggregating effect, etc.
h) when added to a drilling mud modifier,
Effectively transforms excavated mud into high-strength treated soil. In the present invention, the weight ratio of the coconut waste to the water-soluble polymer compound is 1: 1 to 100: 1.
Is preferable, and 3: 1 to 30: 1 is more preferable. Substances other than these water-soluble polymer compounds that are hydrophilic and have thickening properties, water absorption properties, cohesive properties, etc. can be effectively used in the present invention.
【０００７】本発明の改質剤においては、必要に応じ
て、無機水硬性物質、無機多孔性物質および膨潤性粘土
鉱物から選ばれる１種または２種以上の物質を含有せし
めることができる。本発明において、無機水硬性物質と
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、無水石膏、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、石灰系の土壌改
質剤等を挙げることができる。無機水硬性物質は、泥粒
子や有機物質と反応あるいは物理的な吸着による凝結効
果、水和による脱水効果等により掘削泥土の水分を吸収
するので、強度の大きい、取扱いやすい固化した処理土
が得られる。本発明に用いる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
ム焼成物等を挙げることができる。無機多孔性物質は、
空孔による吸水効果、粒径による補強効果等により掘削
泥土の固化に効果を発揮する。本発明方法に用いる膨潤
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、膨潤性雲母等を
挙げることができる。膨潤性粘土鉱物は、膨潤力による
吸水効果、粘土質による増粘効果等により掘削泥土を固
化し、適度の強度を与える。本発明において、椰子屑
（Ｃｏｉｒ ｐｉｔｈ）と無機水硬性物質、無機多孔性
物質または膨潤性粘土鉱物の使用割合は、重量比で１：
６０〜２０：１であることが好ましく、１：１０〜１
０：１であることがさらに好ましい。本発明の掘削泥土
の改質剤の添加量は、掘削泥土の土質あるいは含水率に
より異なり特に限定されないが、通常は掘削泥土１ｍ3
当たり０.１〜２００kgであり、好ましくは掘削泥土１
ｍ3当たり０.５〜１００kgである。本発明の改質剤の添
加により、掘削泥土に含まれる水分が吸収され椰子屑
（Ｃｏｉｒ ｐｉｔｈ）中の繊維状物質等により補強さ
れるので、取扱いの容易な強度を有する固化した処理土
となり、処理土の再利用および廃棄が容易となる。The modifier of the present invention may contain, if necessary, one or more substances selected from inorganic hydraulic substances, inorganic porous substances and swelling clay minerals. In the present invention, as the inorganic hydraulic substance, any inorganic substance exhibiting hydraulic properties can be used. Examples of such substances include hemihydrate gypsum, anhydrous gypsum, ordinary Portland cement, fast-setting Portland cement, blast furnace cement and other improved Portland cement, alumina cement, calcium cement, cement containing fly ash and pozzolan. Examples thereof include limes, quick lime, slaked lime, and lime-based soil modifiers. Inorganic hydraulic substances absorb the water content of excavated mud by reacting with mud particles or organic substances or by condensation by physical adsorption, dehydration by hydration, etc., so that solid treated soil with high strength and easy handling can be obtained. To be The inorganic porous material used in the present invention,
For example, zeolite, perlite, vermiculite,
Examples include diatomaceous earth fired products, clay mineral porous fired products, calcium silicate fired products, and the like. The inorganic porous material is
It exerts an effect on solidification of excavated mud by water absorption effect by pores and reinforcement effect by particle size. Examples of the swelling clay mineral used in the method of the present invention include montmorillonite, beidellite, nontronite, saponite, hectorite, sauconite, stevensite, and swelling mica. The swelling clay mineral solidifies the excavated mud by the water absorption effect due to the swelling force, the thickening effect due to the clay quality, and the like, and imparts appropriate strength. In the present invention, the use ratio of the coconut trash and the inorganic hydraulic substance, the inorganic porous substance or the swelling clay mineral is 1: by weight.
It is preferably 60 to 20: 1, and 1:10 to 1
More preferably, it is 0: 1. The addition amount of the modifying agent drilling mud of the present invention is not particularly limited depends soil or water content of the drilling mud, typically drilling mud 1 m 3
It is 0.1 to 200 kg per unit, preferably 1 excavated mud
It is 0.5 to 100 kg per m 3 . By the addition of the modifying agent of the present invention, the water contained in the excavated mud is absorbed and reinforced by the fibrous substances in the palm dust (Coir pit), etc., resulting in a solidified treated soil having a strength that is easy to handle, It is easy to reuse and dispose of the treated soil.
【０００８】本発明の改質剤は、椰子屑（Ｃｏｉｒ ｐ
ｉｔｈ）、水溶性高分子化合物、無機水硬性物質、無機
多孔性物質、膨潤性粘土鉱物の各成分を、あらかじめ混
合してワンパック型改質剤として使用し、各成分をそれ
ぞれ別々に掘削泥土に添加して使用し、あるいは、各成
分のうち何種かをあらかじめ混合し、残余の成分を別々
に添加して使用する等、各成分を任意の順序で添加して
使用することができる。これらの添加方法のうち、ワン
パック型改質剤として全成分を同時に添加し、あるい
は、水溶性高分子化合物を先に添加する方法が効果が良
好であるので望ましい。本発明の改質剤において、椰子
屑（Ｃｏｉｒ ｐｉｔｈ）、水溶性高分子化合物、無機
水硬性物質、無機多孔性物質および膨潤性粘土鉱物は、
ミル等を用いて粉砕し、粒径を１mm以下とすれば特に効
果的であるが、未粉砕または１mm以上の粒径の各成分も
使用することができる。本発明の改質剤は、各成分が乾
燥状態であるとき最も高い効果を示すが、スラリー状、
その他の形状でも使用することができる。本発明の改質
剤をスラリー状とすれば、高粘性液体用ポンプで輸送す
ることができる。本発明の改質剤は、掘削泥土と無撹拌
で接触させるだけでも効果を奏するが、掘削泥土に添加
したのち撹拌することにより、より高い効果を得ること
ができる。本発明の掘削泥土の改質剤において、椰子屑
（Ｃｏｉｒ ｐｉｔｈ）は、吸水効果および繊維構造に
よる補強効果によって、高含水率の掘削泥土を効果的に
固化する。水溶性高分子化合物は、吸水効果、増粘効
果、凝集効果等により、繊維状物質の効果を高め、より
強度のある改質土とし水の遊離等も防止する。無機水硬
性物質は、凝結効果、水和による脱水効果等により繊維
状物質の効果を高め、より強度のある改質土とし、雨水
による処理土の軟弱化を抑制する。無機多孔性物質は、
空孔による吸水効果、粒径による補強効果等により、よ
り低添加量でより効果的に掘削泥土を固化する。膨潤性
粘土鉱物は、膨潤力による吸水効果、粘土質による増粘
効果等により、より低添加量でより効果的に掘削泥土を
固化する。The modifier of the present invention is a coconut shaving (Coir p
ith), a water-soluble polymer compound, an inorganic hydraulic substance, an inorganic porous substance, and a swelling clay mineral are mixed in advance and used as a one-pack type modifier, and each component is separately excavated mud. Each of the components can be used by adding them in any order, for example, by mixing some of the components in advance and adding the remaining components separately. Among these addition methods, the method of adding all the components at the same time as the one-pack type modifier or the method of adding the water-soluble polymer compound first is preferable because the effect is good. In the modifier of the present invention, the coconut trash, the water-soluble polymer compound, the inorganic hydraulic substance, the inorganic porous substance and the swelling clay mineral are
It is especially effective if the particles are pulverized with a mill or the like to have a particle size of 1 mm or less, but it is also possible to use non-pulverized or each component having a particle size of 1 mm or more. The modifier of the present invention exhibits the highest effect when each component is in a dry state,
Other shapes can also be used. If the modifier of the present invention is made into a slurry, it can be transported by a high-viscosity liquid pump. The effect of the modifier of the present invention can be obtained only by bringing it into contact with the excavated mud without stirring. However, a higher effect can be obtained by adding the modified mud to the excavated mud and stirring it. In the modifier for excavated mud of the present invention, the palm dust (Cair pit) effectively solidifies the excavated mud having a high water content due to the water absorbing effect and the reinforcing effect of the fiber structure. The water-soluble polymer compound enhances the effect of the fibrous substance due to the water absorption effect, the thickening effect, the coagulation effect, etc., and makes the modified soil stronger and prevents the release of water. The inorganic hydraulic substance enhances the effect of the fibrous substance due to the coagulation effect, the dehydration effect due to hydration, etc., and becomes a stronger modified soil, and suppresses the weakening of the treated soil due to rainwater. The inorganic porous material is
Due to the water absorption effect of pores and the reinforcement effect of particle size, etc., the excavated mud is solidified more effectively with a lower addition amount. The swelling clay mineral solidifies the excavated mud more effectively with a lower addition amount due to the water absorption effect due to the swelling force, the thickening effect due to the clay quality, and the like.
【０００９】[0009]
【実施例】以下に、実施例を挙げて本発明をさらに詳細
に説明するが、本発明はこれらの実施例によりなんら限
定されるものではない。 実施例１ 地下鉄用トンネル工事現場より採取した掘削泥土（含水
率３１.５重量％、砂分［７５μｍ以上の粒子］４４.５
重量％）２リットルに、コーヒミルで乾式粉砕したＣｏ
ｉｒ ｆｉｂｅｒ ｐｉｔｈ（以下「椰子屑粉砕物」と
いう。）２００ｇを添加し、２分間撹拌した。１０分後
に山中式土壌硬度計により処理土の土壌強度を測定した
ところ、４.５kg／cm2であった。 実施例２ 実施例１と同じ泥土２リットルに、椰子屑粉砕物１００
ｇおよび天然高分子系改質剤［栗田工業(株)製、クリサ
ットＣ−１０１］６ｇを同時に添加し、２分間撹拌し
た。１０分後に山中式土壌硬度計により処理土の土壌強
度を測定したところ、４.５kg／cm2であった。 実施例３ 実施例１と同じ泥土２リットルに、椰子屑粉砕物１００
ｇ、天然高分子系改質剤［栗田工業(株)製、クリサット
Ｃ−１０１］６ｇおよび半水石膏６０ｇを同時に添加
し、２分間撹拌した。１０分後に山中式土壌硬度計によ
り処理土の土壌強度を測定したところ、５.０kg／cm2で
あった。 比較例１ 実施例１と同じ泥土２リットルに、天然高分子系改質剤
［栗田工業(株)製、クリサットＣ−１０１］１０ｇを添
加し、２分間撹拌した。１０分後に山中式土壌硬度計に
より処理土の土壌強度を測定したところ、０.４０kg／c
m2であった。椰子屑粉砕物を添加した実施例１、椰子屑
粉砕物および天然高分子系改質剤を添加した実施例２、
椰子屑粉砕物、天然高分子系改質剤および半水石膏を添
加した実施例３では、処理土の土壌強度が十分に向上し
ているが、天然高分子系改質剤のみを添加し、椰子屑粉
砕物を添加していない比較例１では、処理土の土壌強度
の向上は少ない。 実施例４ 実施例１と同じ泥土２リットルに、椰子屑粉砕物１００
ｇおよび合成高分子系改質剤［栗田工業(株)製、クリフ
ィックスＣＰ−６０４］６ｇを同時に添加し、２分間撹
拌した。１０分後に山中式土壌硬度計により処理土の土
壌強度を測定したところ、５.５kg／cm2であった。 実施例５ 実施例１と同じ泥土２リットルに、椰子屑粉砕物１００
ｇ、合成高分子系改質剤［栗田工業(株)製、クリフィッ
クスＣＰ−６０４］６ｇおよび半水石膏６０ｇを同時に
添加し、２分間撹拌した。１０分後に山中式土壌硬度計
により処理土の土壌強度を測定したところ、６.１kg／c
m2であった。 比較例２ 実施例１と同じ泥土２リットルに、合成高分子系改質剤
［栗田工業(株)製、クリフィックスＣＰ−６０４］１０
ｇを添加し、２分間撹拌した。１０分後に山中式土壌硬
度計により処理土の土壌強度を測定したところ、０.８
０kg／cm2であった。椰子屑粉砕物および合成高分子系
改質剤を添加した実施例４、椰子屑粉砕物、合成高分子
系改質剤および半水石膏を添加した実施例５では、処理
土の土壌強度が十分に向上しているが、合成高分子系改
質剤のみを添加し、椰子屑粉砕物を添加していない比較
例２では、処理土の土壌強度の向上は少ない。 実施例６ 容積５リットルのモルタルミキサーに、粉末粘土１,１
１１ｇと水道水８８９mlを取り、１分間撹拌し、含水率
４４.５重量％の泥土を調製した。この泥土に、椰子屑
粉砕物５０ｇ、ポルトランドセメント５０ｇを同時に添
加し、２分間撹拌した。４時間後および７２時間後に山
中式土壌硬度計により処理土の土壌強度を測定したとこ
ろ、４時間後には１.９kg／cm2、７２時間後には１５kg
／cm2であった。 実施例７ ポルトランドセメント５０ｇの代わりに石灰系土壌改質
剤［(株)カルシード製、グリーンライムＬＣ］５０ｇを
使用した以外は、実施例６と全く同じ操作を繰り返し
た。処理土の土壌強度は、４時間後には１.１kg／cm2、
７２時間後には６.６kg／cm2であった。 比較例３ 容積５リットルのモルタルミキサーに、粉末粘土１,１
１１ｇと水道水８８９mlを取り、１分間撹拌し、含水率
４４.５重量％の泥土を調製した。この泥土に、ポルト
ランドセメント１００ｇを添加し、２分間撹拌した。４
時間後および７２時間後に山中式土壌硬度計により処理
土の土壌強度を測定したところ、４時間後には０.６kg
／cm2、７２時間後には４.０kg／cm2であった。 比較例４ ポルトランドセメント１００ｇの代わりに石灰系土壌改
質剤［(株)カルシード製、グリーンライムＬＣ］１００
ｇを使用した以外は、比較例３と全く同じ操作を繰り返
した。処理土の土壌強度は、４時間後は０.７kg／cm2、
７２時間後は４.０kg／cm2であった。椰子屑粉砕物、ポ
ルトランドセメントまたは石灰系土壌改質剤を添加した
実施例６〜７の処理土は、椰子屑粉砕物を添加していな
い比較例３〜４の処理土よりも、いずれも高い土壌強度
を示した。EXAMPLES The present invention will be described in more detail with reference to the following Examples, which should not be construed as limiting the present invention. Example 1 Excavated mud collected from a subway tunnel construction site (water content 31.5% by weight, sand content [particles of 75 μm or more] 44.5)
(% By weight) to 2 liters of Co dry milled with a coffee mill
200 g of ir fiber pit (hereinafter, referred to as "pulverized coconut waste") was added and stirred for 2 minutes. After 10 minutes, the soil strength of the treated soil was measured by a Yamanaka soil hardness meter and found to be 4.5 kg / cm 2 . Example 2 2 liters of the same mud as in Example 1 was added with 100 pulverized coconut chips.
g and 6 g of a natural polymer modifier [Chrysat C-101, manufactured by Kurita Water Industries Ltd.] were added at the same time and stirred for 2 minutes. After 10 minutes, the soil strength of the treated soil was measured by a Yamanaka soil hardness meter and found to be 4.5 kg / cm 2 . Example 3 2 liters of the same mud as in Example 1 was added with 100 pulverized coconut scraps.
g, 6 g of a natural polymer modifier [Chrysat C-101 manufactured by Kurita Water Industries Ltd.] and 60 g of hemihydrate gypsum were added at the same time and stirred for 2 minutes. After 10 minutes, the soil strength of the treated soil was measured with a Yamanaka soil hardness meter, and it was 5.0 kg / cm 2 . Comparative Example 1 To 2 liters of the same mud as in Example 1, 10 g of a natural polymer modifier [Kurisat C-101 manufactured by Kurita Water Industries Ltd.] was added and stirred for 2 minutes. After 10 minutes, when the soil strength of the treated soil was measured with a Yamanaka soil hardness meter, it was 0.40 kg / c.
It was m 2. Example 1 in which pulverized coconut waste was added, Example 2 in which pulverized coconut waste and a natural polymer modifier were added,
In Example 3 in which the pulverized coconut waste, natural polymer modifier and hemihydrate gypsum were added, the soil strength of the treated soil was sufficiently improved, but only the natural polymer modifier was added, In Comparative Example 1 in which the pulverized coconut waste was not added, the soil strength of the treated soil was not significantly improved. Example 4 2 liters of the same mud as in Example 1 was added with 100 pulverized coconut chips.
g and 6 g of a synthetic polymer modifier [Kurifix CP-604 manufactured by Kurita Water Industries Ltd.] were added at the same time and stirred for 2 minutes. After 10 minutes, the soil strength of the treated soil was measured with a Yamanaka soil hardness meter, and it was 5.5 kg / cm 2 . Example 5 2 liters of the same mud as in Example 1 was added with 100 pulverized coconut scraps.
g, 6 g of a synthetic polymer modifier [Kurida Kogyo Co., Ltd., Cliffix CP-604] and 60 g of hemihydrate gypsum were added at the same time and stirred for 2 minutes. Ten minutes later, when the soil strength of the treated soil was measured with a Yamanaka soil hardness meter, it was 6.1 kg / c.
It was m 2. Comparative Example 2 A synthetic polymer modifier [Kurifix CP-604, manufactured by Kurita Water Industries Ltd.] 10 was added to 2 liters of the same mud as in Example 1.
g and stirred for 2 minutes. Ten minutes later, when the soil strength of the treated soil was measured with a Yamanaka soil hardness meter, it was 0.8
It was 0 kg / cm 2 . In Example 4 in which the pulverized coconut waste and the synthetic polymer modifier were added, and in Example 5 in which the pulverized coconut waste, the synthetic polymer modifier and hemihydrate gypsum were added, the soil strength of the treated soil was sufficient. However, in Comparative Example 2 in which only the synthetic polymer modifier is added and the pulverized coconut waste is not added, the soil strength of the treated soil is not significantly improved. Example 6 Powder clay 1,1 was added to a mortar mixer having a volume of 5 liters.
11 g and 889 ml of tap water were taken and stirred for 1 minute to prepare a mud having a water content of 44.5% by weight. To this mud, 50 g of pulverized coconut waste and 50 g of Portland cement were added at the same time, and the mixture was stirred for 2 minutes. The soil strength of the treated soil was measured with a Yamanaka soil hardness meter after 4 hours and 72 hours, and it was 1.9 kg / cm 2 after 4 hours and 15 kg after 72 hours.
/ Cm 2 . Example 7 The same operation as in Example 6 was repeated, except that 50 g of lime soil modifier [Green lime LC manufactured by Calceed Co., Ltd.] was used instead of 50 g of Portland cement. The soil strength of the treated soil is 1.1 kg / cm 2 after 4 hours,
After 72 hours, it was 6.6 kg / cm 2 . Comparative Example 3 In a mortar mixer having a volume of 5 liters, powdered clay 1,1
11 g and 889 ml of tap water were taken and stirred for 1 minute to prepare a mud having a water content of 44.5% by weight. 100 g of Portland cement was added to this mud and stirred for 2 minutes. Four
When the soil strength of the treated soil was measured with a Yamanaka soil hardness meter after an hour and 72 hours, it was 0.6 kg after 4 hours.
/ Cm 2 , and after 72 hours it was 4.0 kg / cm 2 . Comparative Example 4 Instead of 100 g of Portland cement, a lime soil modifier [Green lime LC] manufactured by Calceed Co., Ltd. 100
The exact same procedure as in Comparative Example 3 was repeated except that g was used. The soil strength of the treated soil is 0.7 kg / cm 2 after 4 hours,
After 72 hours, it was 4.0 kg / cm 2 . The treated soils of Examples 6 to 7 to which the pulverized coconut waste, Portland cement, or the lime-based soil modifier are added are all higher than the treated soils of Comparative Examples 3 to 4 to which the pulverized coconut waste is not added. It showed soil strength.
【００１０】[0010]
【発明の効果】本発明の掘削泥土の改質剤によれば、石
油井、ガス井、地熱井、トンネル工事、浚渫工事、建設
工事、その他の工事現場で発生する掘削泥土や、ヘド
ロ、スラッジ類を、短時間で移送可能な形態とし、再利
用または廃棄が容易な形態の処理土とすることができ
る。EFFECTS OF THE INVENTION According to the drilling mud modifier of the present invention, drilling mud, sludge and sludge generated in oil wells, gas wells, geothermal wells, tunnel construction, dredging construction, construction construction and other construction sites. It is possible to form the treated soil in a form that can be transferred in a short time and easily reused or discarded.
フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｃ０９Ｋ 17/50 Ｃ０９Ｋ 17/50 Ｐ Ｅ０２Ｆ 7/00 Ｅ０２Ｆ 7/00 Ｄ // Ｃ０９Ｋ 103:00 Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI Technical indication C09K 17/50 C09K 17/50 P E02F 7/00 E02F 7/00 D // C09K 103: 00
Claims (1)
ことを特徴とする掘削泥土の改質剤。1. A modifier for excavated mud, characterized in that it contains coconut dust.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19415895A JP3613412B2 (en) | 1995-07-06 | 1995-07-06 | Drilling mud modifier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19415895A JP3613412B2 (en) | 1995-07-06 | 1995-07-06 | Drilling mud modifier |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0920889A true JPH0920889A (en) | 1997-01-21 |
| JP3613412B2 JP3613412B2 (en) | 2005-01-26 |
Family
ID=16319892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19415895A Expired - Fee Related JP3613412B2 (en) | 1995-07-06 | 1995-07-06 | Drilling mud modifier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3613412B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11256154A (en) * | 1998-03-10 | 1999-09-21 | Oji Ryokka Kk | Soil improvement |
| JP2002177992A (en) * | 2000-12-07 | 2002-06-25 | Yoshino Gypsum Co Ltd | Soil treating material composition |
| JP2011231234A (en) * | 2010-04-28 | 2011-11-17 | Kureatera:Kk | Modifier for diggings |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5715786A (en) * | 1980-07-02 | 1982-01-27 | Hitachi Ltd | Door controller |
| JPH05317705A (en) * | 1992-05-15 | 1993-12-03 | Sekisui Plastics Co Ltd | Water-absorptive compression molded body |
| JPH07232148A (en) * | 1994-02-22 | 1995-09-05 | Sumitomo Seika Chem Co Ltd | Solidifying agent for treating surplus soil and surplus soil solidification treatment using the same |
| JPH08333571A (en) * | 1995-06-06 | 1996-12-17 | Sumitomo Seika Chem Co Ltd | Surplus soil solidification agent and solidification method |
-
1995
- 1995-07-06 JP JP19415895A patent/JP3613412B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5715786A (en) * | 1980-07-02 | 1982-01-27 | Hitachi Ltd | Door controller |
| JPH05317705A (en) * | 1992-05-15 | 1993-12-03 | Sekisui Plastics Co Ltd | Water-absorptive compression molded body |
| JPH07232148A (en) * | 1994-02-22 | 1995-09-05 | Sumitomo Seika Chem Co Ltd | Solidifying agent for treating surplus soil and surplus soil solidification treatment using the same |
| JPH08333571A (en) * | 1995-06-06 | 1996-12-17 | Sumitomo Seika Chem Co Ltd | Surplus soil solidification agent and solidification method |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11256154A (en) * | 1998-03-10 | 1999-09-21 | Oji Ryokka Kk | Soil improvement |
| JP2002177992A (en) * | 2000-12-07 | 2002-06-25 | Yoshino Gypsum Co Ltd | Soil treating material composition |
| JP4695254B2 (en) * | 2000-12-07 | 2011-06-08 | 吉野石膏株式会社 | Soil treatment material composition and soil treatment method |
| JP2011231234A (en) * | 2010-04-28 | 2011-11-17 | Kureatera:Kk | Modifier for diggings |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3613412B2 (en) | 2005-01-26 |
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