JP2554319B2 - Mud drilling method - Google Patents
Mud drilling methodInfo
- Publication number
- JP2554319B2 JP2554319B2 JP60081401A JP8140185A JP2554319B2 JP 2554319 B2 JP2554319 B2 JP 2554319B2 JP 60081401 A JP60081401 A JP 60081401A JP 8140185 A JP8140185 A JP 8140185A JP 2554319 B2 JP2554319 B2 JP 2554319B2
- Authority
- JP
- Japan
- Prior art keywords
- mud
- muddy water
- viscosity
- water
- excavation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims description 18
- 238000005553 drilling Methods 0.000 title description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 49
- 238000009412 basement excavation Methods 0.000 claims description 20
- GPRLSGONYQIRFK-UHFFFAOYSA-N hydron Chemical compound [H+] GPRLSGONYQIRFK-UHFFFAOYSA-N 0.000 claims description 6
- 229920002907 Guar gum Polymers 0.000 claims description 4
- 229910021538 borax Inorganic materials 0.000 claims description 4
- 235000010417 guar gum Nutrition 0.000 claims description 4
- 239000004328 sodium tetraborate Substances 0.000 claims description 4
- 235000010339 sodium tetraborate Nutrition 0.000 claims description 4
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 claims description 3
- 239000004327 boric acid Substances 0.000 claims description 3
- 239000000665 guar gum Substances 0.000 claims description 3
- 229960002154 guar gum Drugs 0.000 claims description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000000440 bentonite Substances 0.000 description 5
- 229910000278 bentonite Inorganic materials 0.000 description 5
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 5
- 238000010276 construction Methods 0.000 description 5
- 239000002689 soil Substances 0.000 description 5
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 description 3
- 239000004927 clay Substances 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000003113 alkalizing effect Effects 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010979 pH adjustment Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 239000013049 sediment Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 description 2
- 244000303965 Cyamopsis psoralioides Species 0.000 description 1
- WQZGKKKJIJFFOK-QTVWNMPRSA-N D-mannopyranose Chemical compound OC[C@H]1OC(O)[C@@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-QTVWNMPRSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 229920000161 Locust bean gum Polymers 0.000 description 1
- 229920000715 Mucilage Polymers 0.000 description 1
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 1
- 244000046052 Phaseolus vulgaris Species 0.000 description 1
- 241000286862 Siliqua Species 0.000 description 1
- 239000002535 acidifier Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
- 235000011116 calcium hydroxide Nutrition 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 238000003895 groundwater pollution Methods 0.000 description 1
- 235000021374 legumes Nutrition 0.000 description 1
- 239000000711 locust bean gum Substances 0.000 description 1
- 235000010420 locust bean gum Nutrition 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- -1 or roasted Bingham Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000002562 thickening agent Substances 0.000 description 1
Landscapes
- Bulkheads Adapted To Foundation Construction (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Description
【発明の詳細な説明】 ≪産業上の利用分野≫ 本発明は泥水掘削工法に関し、特に泥水粘度の調節を
行ないながら施工する泥水掘削工法に関する。DETAILED DESCRIPTION OF THE INVENTION << Industrial Application Field >> The present invention relates to a muddy water excavation method, and more particularly to a muddy water excavation method performed while adjusting the viscosity of the muddy water.
≪従来技術≫ 周知のように、都市土木分野などの建設工事では、地
中壁，タンクの周壁、基礎杭などを泥水掘削工法によっ
て構築している。<Prior art> As is well known, in construction works such as in the field of urban civil engineering, underground walls, peripheral walls of tanks, foundation piles, etc. are constructed by a mud excavation method.
この工法は、ベントナイトなどの粘土を水に懸濁さ
せ、分散剤、増粘剤などを添加して泥水を作り、地盤を
溝状あるいは円形断面状に掘削しながらこれを充満し、
所定の深度まで掘削した後、内部の泥水とコンクリート
を置換し、コンクリートを硬化させることで地中に壁や
杭を構築する。In this method, clay such as bentonite is suspended in water, a dispersant, a thickener, etc. are added to make muddy water, and this is filled while excavating the ground in a groove or circular cross section,
After excavating to a specified depth, the muddy water inside is replaced with concrete and the concrete is hardened to build walls and piles underground.
溝状あるいは円形断面の掘削孔内に充満する泥水は、
孔壁の崩壊を防止するとともに、掘削土砂の搬出の際に
土砂に流動性を付与して搬出を容易にする機能も要求さ
れる。The muddy water that fills the trench hole with a groove or circular cross section is
In addition to preventing collapse of the hole wall, it is also required to have a function of imparting fluidity to the earth and sand when carrying out the excavated earth and sand to facilitate the carry-out.
つまり、この種の工法では、安全に施工するために、
泥水が掘削孔内に充満されていることが不可欠である
が、掘削地盤が例えば砂礫地盤の如き透水性であると、
泥水が周辺地盤に過剰に浸透流失し、泥水を常時掘削孔
内に充満させることが困難となる。地盤中への過剰な浸
透流失は、逸泥と呼ばれ、工事の安全性を阻害するだけ
でなく、地下水の汚染原因ともなる。In other words, in this kind of construction method, in order to construct safely,
It is essential that muddy water is filled in the drill hole, but if the drilling ground is water permeable, such as gravel ground,
The muddy water excessively permeates into the surrounding ground, making it difficult to constantly fill the drill hole with muddy water. Excessive seepage into the ground is called mud, which not only hinders the safety of construction but also causes groundwater pollution.
そこで、従来は過剰な逸泥を防止する方法として、ベ
ントナイトの混入量を多くして泥水の濃度を上げたり、
ファイバ，おがくずなどを混入したり、さらにはカルボ
キシメチルセルロース（CMC）を添加して泥水の粘土を
上げる手段が提案されている。Therefore, conventionally, as a method of preventing excessive sludge, increasing the concentration of bentonite to increase the concentration of mud,
It has been proposed to add fibers, sawdust, etc., or to add carboxymethyl cellulose (CMC) to raise clay in mud.
≪発明が解決しようとする問題点≫ しかしながら、泥水の濃度や粘度を上げると、掘削機
の進退動が難しくなる。<< Problems to be Solved by the Invention >> However, if the concentration or viscosity of muddy water is increased, it is difficult to move the excavator back and forth.
また、ファイバー，おが屑などを混入すると、これが
掘削機にからむなどして同様に進退動を困難にする。Further, if fibers, sawdust, or the like are mixed in, they will be entangled in the excavator and make it difficult to move back and forth.
一方、使用された泥水は、ベントナイトが高価なた
め、通常回収して再使用に供されているが、CMCを混入
するとそのまま廃棄すると公害問題となるし、ファイバ
ーなどはベントナイトと分離しなければならず、この作
業が面倒であった。On the other hand, the used muddy water is usually collected and reused because bentonite is expensive, but if CMC is mixed and discarded as it is, it will cause pollution problems, and fibers and the like must be separated from bentonite. This work was troublesome.
この発明は上述した従来の問題点に鑑みなされたもの
であって、その目的とするところは、泥水の過剰な流出
を防止し、掘削地盤の地層の変化に応じて容易かつ効率
的な掘削が可能となり、しかも回収再使用も簡単に行え
る泥水掘削工法を提供することにある。The present invention has been made in view of the above-mentioned conventional problems, and an object thereof is to prevent excessive outflow of muddy water and enable easy and efficient excavation in accordance with changes in the formation of the excavated ground. It is to provide a mud excavation method that can be recovered and reused easily.
≪問題点を解決するための手段≫ 上記目的を達成するため、この手段は、泥水を充満し
て地中孔を掘削する泥水掘削工法において、該泥水は水
に溶解した、グワガム、グワガムの変性品、またはロー
ストビンガムと、硼砂または硼酸とからなり、該導水の
水素イオン濃度を調節することによって、該泥水の粘度
を略50センチポアーズから30000センチポアーズ前後に
至る範囲で変化させつつ掘削作業を行なうことによって
該泥水の粘度を制御することを特徴とする。<< Means for Solving Problems >> In order to achieve the above object, this means is a mud excavation method in which mud is filled to excavate an underground hole, and the mud is dissolved in water. Product, or roasted Bingham, and borax or boric acid, and performing excavation work while changing the viscosity of the muddy water in the range from about 50 centipoises to about 30,000 centipoises by adjusting the hydrogen ion concentration of the guiding water. It is characterized in that the viscosity of the muddy water is controlled by.
より具体的に説明すると、本発明工法では、泥水とし
て従来主材として用いられていたベントナイト粘土に代
え、グワガム（豆科のグアから作られ、発酵性の単一糖
類であるマンノース（C6H12O6）とガラストース（C6H12
O6）が枝状に結合した物質（グアラン）を主成分とする
粉末であって、吸に溶解すると粘稠な液体となる。）、
その変成品、またはローカストビーンガム（豆科のCera
tion siliquaから作られる粉末で、主成分は、Ｄ−ガラ
ストース,D−マンノグルカンであって、水に溶解すると
粘稠な液体となる。）を、単独あるいは併用して水に溶
解し、これに硼砂あるいは硼酸を加えて泥水とする。More specifically, in the method of the present invention, instead of bentonite clay that has been conventionally used as a main material as muddy water, guawa gum (mannose (C 6 H, which is a fermentable single sugar made from guar of the leguminous family) is used. 12 O 6 ) and glass toast (C 6 H 12
O 6 ) is a powder whose main component is a substance (guaran) in which branches are bound, and becomes a viscous liquid when dissolved in water. ),
The modified product, or locust bean gum (Cera of legumes)
It is a powder made from tion siliqua, and the main components are D-glass torse and D-mannoglucan, which become a viscous liquid when dissolved in water. ), Alone or in combination, is dissolved in water, and borax or boric acid is added thereto to form muddy water.
本発明者らは、この泥水が水素イオン濃度（PH）によ
って、粘度が数万センチポアーズ（CP）から10〜50CPの
極めて広い範囲で変化することを知得し、この現象を泥
水掘削工法に利用することを意図したものである。すな
わち、砂礫層などの逸泥が大きな地盤を掘削するときに
は、泥水のPHをアルカリ側にして高粘度化して、高粘度
の泥水が土粒子間に侵入することで逸泥を防止し、逸泥
の少い地盤の掘削時には、PHを中性あるいは弱酸性側に
して低粘度化し、掘削の能率の向上および掘削土砂の分
離促進を図る。The inventors of the present invention have found that the viscosity of this mud changes depending on the hydrogen ion concentration (PH) in a very wide range from tens of thousands of centipoise (CP) to 10 to 50 CP, and this phenomenon is utilized in the mud drilling method. It is intended to do. That is, when excavating the ground such as a gravel layer where a large amount of mud is lost, the pH of the mud is increased to the alkaline side to increase the viscosity and prevent the mud from entering the soil particles and preventing the mud. When excavating the ground with a small amount of soil, PH is neutralized or weakly acidified to reduce the viscosity to improve the efficiency of excavation and promote the separation of excavated soil.
また、コンクリート打設の際に、コンクリートと置換
して回収した泥水は、掘削土砂が混入しているが、土砂
分の分離はPHを低下して低粘度化させれば、分離が促進
され、クリーニングされた泥水を再びPHを上げて高粘度
化し、逸泥防止用泥水として再利用できる。In addition, when pouring concrete, the mud collected by replacing concrete is mixed with excavated earth and sand, but if the sediment content is reduced by lowering the PH to lower the viscosity, the separation is promoted, The pH of the cleaned mud water is raised again to increase the viscosity, and it can be reused as mud water to prevent lost mud.
以上のようにPH調節に用いられる薬品は、酸性化剤と
して硫酸アルミニウム，塩化アルミニウム，希硫酸，希
塩酸などが用いられ、アルカリ化剤としては水酸化ナト
リウム，消石灰，炭酸ナトリウムなどが適当である。As described above, the chemicals used for pH adjustment include aluminum sulfate, aluminum chloride, dilute sulfuric acid, dilute hydrochloric acid, etc. as the acidifying agent, and sodium hydroxide, slaked lime, sodium carbonate, etc. are suitable as the alkalizing agent.
≪実 施 例≫ 以下、この発明の好適な実施例について、添附図面を
参照して説明する。<< Examples >> Hereinafter, preferred examples of the present invention will be described with reference to the accompanying drawings.
第１図は、本発明の泥水掘削工法を地中連続壁工法に
適用した場合を示している。FIG. 1 shows a case where the mud excavation method of the present invention is applied to an underground continuous wall method.
同図の実施例では、掘削地盤10の透水係数が10-1cm/s
ecのオーダーの砂礫地盤中に、細幅な溝孔11を泥水12を
満たしながら掘削し、鉄筋篭14を建込んだ後、トレミー
管15を介してコンクリート16を打設して、パネル状の地
中壁18を横方向に順次連結形成した。In the example of the figure, the hydraulic conductivity of the excavated ground 10 is 10 -1 cm / s.
In the gravel ground of ec order, a narrow slot 11 was excavated while filling muddy water 12, a rebar cage 14 was installed, and then concrete 16 was placed via a tremie pipe 15 to form a panel shape. The underground wall 18 was sequentially formed in the lateral direction.
第１図（ａ）は、先行地中壁18の側方にこれと連結す
る後行パネル用の溝孔11を形成する掘削状態を示してお
り、掘削機20としてはケリー掘削機を使用した。FIG. 1 (a) shows an excavation state in which a slot 11 for a trailing panel connected to the preceding underground wall 18 is formed laterally, and a Kerry excavator was used as the excavator 20. .
また、掘削した後の泥水12は、コンクリート16の打設
によって置換し、回収タンク22内に取り込んだ。Further, the mud water 12 after excavation was replaced by placing concrete 16 and taken into the recovery tank 22.
ここで、溝孔11内に充満した泥水12は、作泥時に単位
重量当たり0.5％のグアガムと、0.05％の硼砂を投入し
て作成した。Here, the muddy water 12 filled in the slots 11 was created by adding 0.5% guar gum and 0.05% borax per unit weight during mud formation.
一方、コンクリート16の打設時にタンク22内に回収し
た泥水12は、タンク22内に液体硫酸アルミニウムを１〜
２/m3投入してPHを約６程度にし、粘度をほぼ50CPと
なし、タンク22内に所定時間静置して土砂23を沈降分離
した。On the other hand, the muddy water 12 collected in the tank 22 at the time of placing the concrete 16 contains liquid aluminum sulfate of 1 to
2 / m 3 was added to adjust the PH to about 6, the viscosity was set to about 50 CP, and the soil 23 was settled and separated by standing in the tank 22 for a predetermined time.
しかる後、回収タンク22から処理タンク24内にポンプ
26によって泥水12を移し替え、再び25％水酸化ナトリウ
ム溶液を１/m3だけ投入して、PHを再び９〜10とし、
粘度30000CP前後とした後、再び縦溝11内に充満して地
盤を掘削した。以上の操作を繰返すことによって、所望
の地中連続壁を安全且つ能率的に、また周辺地下水を汚
染することなく構築した。Then, pump the recovery tank 22 into the processing tank 24.
Muddy water 12 is transferred by 26, 25% sodium hydroxide solution is added by 1 / m 3 again, and PH is set to 9-10 again,
After setting the viscosity to around 30,000 CP, the vertical groove 11 was filled again and the ground was excavated. By repeating the above operation, a desired underground continuous wall was constructed safely and efficiently and without contaminating surrounding groundwater.
上述した工事中に、本発明者らは工事に使用した泥水
12を溝孔11内から採取し、泥水12が水素イオン濃度によ
ってどのように粘度が変化するか、その挙動を測定し
た。During the above-mentioned construction, the present inventors used the muddy water used for the construction.
12 was sampled from the inside of the slot 11, and the behavior of the mud water 12 was measured as to how the viscosity changed depending on the hydrogen ion concentration.
第２図はその測定結果を示すものであって、水素イオ
ン濃度はガラス電極法で測定し、また粘度の測定はＢ型
粘度計を用いた。FIG. 2 shows the measurement results. The hydrogen ion concentration was measured by the glass electrode method, and the viscosity was measured using a B type viscometer.
泥水12を酸性化するには液体硫酸アルミニウムを用
い、逆にアルカリ化するために炭酸ソーダ25％液を使用
した。Liquid aluminum sulfate was used to acidify the mud 12, and conversely 25% sodium carbonate solution was used to make it alkaline.
また各薬剤はポンプによって投入して、薬剤と泥水12
とが循環混合するようにした。In addition, each chemical is put in by a pump to
And were mixed in circulation.
同図に示す結果からも明らかなように、本発明工法で
使用した泥水12は、水素イオン濃度に追随して粘度が大
きく変化し、このような粘度制御は少くとも数回は繰り
替えせることが確認された。As is clear from the results shown in the figure, the muddy water 12 used in the method of the present invention has a large change in viscosity following the hydrogen ion concentration, and such viscosity control can be repeated at least several times. confirmed.
さて、以上のように構成された本発明の泥水掘削工法
では、逸泥量の大きい地盤では、泥水12をアルカリ化す
ることで高粘度とできるため、粘度が高められた泥水12
が土砂の間隙に侵入して、間隙を塞ぎ逸泥量を大幅に減
少させる。Now, in the muddy water excavation method of the present invention configured as described above, since mud water 12 can be made highly viscous by alkalizing mud water 12 in the ground with a large amount of lost mud, the mud water 12 with an increased viscosity can be obtained.
Penetrates into the gap of the earth and sand and closes the gap, greatly reducing the amount of sludge lost.
一方、逸泥量の小さい地盤では、泥水12を酸性化する
ことで低粘度として、掘削の能率化が図られ、粘度の調
節が極めて簡単に行なわれる。On the other hand, in the ground where the amount of lost mud is small, the mud water 12 is acidified to have a low viscosity, so that excavation efficiency can be improved and the viscosity can be adjusted very easily.
また、泥水12を回収再使用する際にも、泥水12の粘度
を下げて混入した土砂を簡単に分離することができる。Further, even when the muddy water 12 is collected and reused, the viscosity of the muddy water 12 can be reduced and the mixed soil can be easily separated.
さらに、泥水12は豆類などの植物性粘質物を主体とし
ているため、仮に地盤中に浸透しても、公害問題となる
ことはない。Furthermore, since the muddy water 12 is mainly composed of plant mucilage such as beans, even if it penetrates into the ground, it will not cause pollution problems.
なお、上記実施例では、溝孔11内に充満する泥水12の
粘度を予め調整して使用する場合を説明したが、本発明
の実施はこれに限定されず、例えば溝孔11内にPH調整用
の薬剤を注入して、溝孔11内で粘度を調節してもよい。In the above embodiment, the case where the viscosity of the muddy water 12 filled in the groove 11 is adjusted in advance and used is described, but the practice of the present invention is not limited to this, and for example, PH adjustment in the groove 11 is performed. The viscosity may be adjusted in the slot 11 by injecting a medicine for use.
このようにすれば、溝孔11内で高粘度として逸泥を防
止した後、酸性化して低粘度とし、掘削の能率化を向上
させることもできる。By doing so, it is possible to improve the efficiency of excavation by making the viscosity high in the groove hole 11 to prevent the mud and then acidifying it to reduce the viscosity.
≪効 果≫ 以上、実施例で詳細に説明したように、本発明に係る
泥水掘削工法によれば、砂礫層などの逸泥の発生する惧
れのある地層から逸泥の心配のない地層にわたって、各
地層に適した泥水の粘度に広い範囲で調節することがで
き、これによって掘削作業の能率化を図ることができる
とともに、回収される泥水中の掘削土砂の分離を容易に
行なうことができる。<< Effects >> As described in detail in the above, according to the mud excavation method according to the present invention, there is a possibility that a mud layer such as a gravel layer may cause a mud to occur. The viscosity of mud water suitable for each layer can be adjusted in a wide range, which can improve the efficiency of excavation work and can easily separate the excavated sediment in the collected mud water. .
第１図は本発明の一実施例を示す説明図、第２図は本発
明に用いられる泥水のPHと粘度との関係を示すグラフで
ある。 10……掘削地盤、11……溝孔 12……泥水、14……鉄筋篭 16……コンクリート、18……地中壁 20……掘削機、22……回収タンクFIG. 1 is an explanatory view showing an embodiment of the present invention, and FIG. 2 is a graph showing a relationship between PH and viscosity of mud water used in the present invention. 10 …… Excavation ground, 11 …… Groove 12 …… Mud, 14 …… Reinforcement basket 16 …… Concrete, 18 …… Underground wall 20 …… Excavator, 22 …… Recovery tank
Claims (1)
工法において、該泥水は水に溶解した、グワガム、グワ
ガムの変性品、またはローストビンガムと、硼砂または
硼酸とからなり、該導水の水素イオン濃度を調節するこ
とによって、該泥水の粘度を略50センチポアーズから30
000センチポアーズ前後に至る範囲で変化させつつ掘削
作業を行なうことを特徴とする泥水掘削工法。1. A muddy water excavation method for excavating an underground hole by filling muddy water, wherein the muddy water comprises guar gum, a modified product of guar gum, or roasted bingham dissolved in water, and borax or boric acid. By adjusting the hydrogen ion concentration of the mud, the viscosity of the mud can be adjusted from about 50 centipoise to 30
A mud excavation method characterized by performing excavation work while changing the range up to around 000 centipoise.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60081401A JP2554319B2 (en) | 1985-04-18 | 1985-04-18 | Mud drilling method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60081401A JP2554319B2 (en) | 1985-04-18 | 1985-04-18 | Mud drilling method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61241381A JPS61241381A (en) | 1986-10-27 |
| JP2554319B2 true JP2554319B2 (en) | 1996-11-13 |
Family
ID=13745291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60081401A Expired - Lifetime JP2554319B2 (en) | 1985-04-18 | 1985-04-18 | Mud drilling method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2554319B2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3079332A (en) | 1957-07-23 | 1963-02-26 | Atlantic Refining Co | Method and composition for reducing fluid loss |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5192508A (en) * | 1975-02-12 | 1976-08-13 | Deisuikohoni okeru itsudeiboshiho |
-
1985
- 1985-04-18 JP JP60081401A patent/JP2554319B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3079332A (en) | 1957-07-23 | 1963-02-26 | Atlantic Refining Co | Method and composition for reducing fluid loss |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61241381A (en) | 1986-10-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6897186B2 (en) | Composition and method for dual function soil grouting excavating or boring fluid | |
| CN1309909C (en) | Follow-up mud jacking rotary digging drilling hole bored concrete pile technology | |
| WO1998034994A1 (en) | Composition and method for a dual-function soil-grouting excavating or boring fluid | |
| CN106894430A (en) | A kind of three axes agitating pile waterproof curtain construction method | |
| CN110512593A (en) | Ultra-deep diaphragm wall structure in sea reclamation area and construction method thereof | |
| CN106320403A (en) | Inclination rectification and reinforcement method for existing building | |
| CN108867673A (en) | A kind of underwater prevention method in the foundation pit based on the curtain that draws water | |
| JP2645301B2 (en) | Ground consolidation method for dehydration and injection using electrochemical injection method | |
| JP2554319B2 (en) | Mud drilling method | |
| CN111455976A (en) | Construction method of self-setting mortar impervious wall by grooving method | |
| CN111926821A (en) | Construction method of novel slope protection pile | |
| CN114033391B (en) | Construction and monitoring method for shield underpass highway viaduct of water-rich sand layer | |
| O’Brien et al. | Construction of the Plastic Concrete Cut-off Wall at Hinze Dam | |
| JPH0548332B2 (en) | ||
| CN113668504B (en) | Grooving emergency reinforcing construction method for diaphragm underground diaphragm wall | |
| JPS63219727A (en) | Construction of water-stop sheet pile wall | |
| Brice et al. | ARAB POTASH SOLAR EVAPORATION SYSTEM: DESIGN AND DEVELOPMENT OF A NOVE-L MEMBRANE CUT-OFF WALL. | |
| JP2001207436A (en) | Stabilizer composition | |
| JPH04108911A (en) | Foundation piling method | |
| JPH10140155A (en) | Fluid backfill material and method for producing the same | |
| CN114232631A (en) | Dynamic water foundation pit cofferdam systematic grouting process | |
| Day et al. | Construction methods for the installation of permeable reactive barriers using the biopolymer slurry method | |
| JPH0517932A (en) | Water permeation method for hole wall surface excavated with stabilizing liquid | |
| JPH054430B2 (en) | ||
| Swiger | Symposium on Grouting: Construction of Rocky Reach Grouted Cutoff |