JPS62267388A - Additive for digging muddy water - Google Patents
Additive for digging muddy waterInfo
- Publication number
- JPS62267388A JPS62267388A JP11115486A JP11115486A JPS62267388A JP S62267388 A JPS62267388 A JP S62267388A JP 11115486 A JP11115486 A JP 11115486A JP 11115486 A JP11115486 A JP 11115486A JP S62267388 A JPS62267388 A JP S62267388A
- Authority
- JP
- Japan
- Prior art keywords
- additive
- salt
- muddy water
- mud
- salts
- 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
- 239000000654 additive Substances 0.000 title claims abstract description 32
- 230000000996 additive effect Effects 0.000 title claims abstract description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title abstract description 34
- 150000003839 salts Chemical class 0.000 claims abstract description 26
- -1 amine salt Chemical class 0.000 claims abstract description 14
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000000440 bentonite Substances 0.000 claims abstract description 7
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 7
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229920001577 copolymer Polymers 0.000 claims abstract description 7
- 238000006116 polymerization reaction Methods 0.000 claims abstract description 7
- FAHBNUUHRFUEAI-UHFFFAOYSA-M hydroxidooxidoaluminium Chemical compound O[Al]=O FAHBNUUHRFUEAI-UHFFFAOYSA-M 0.000 claims abstract description 6
- 150000003863 ammonium salts Chemical class 0.000 claims abstract description 3
- 238000005553 drilling Methods 0.000 claims description 19
- 229910052783 alkali metal Inorganic materials 0.000 claims description 7
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 6
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 6
- 239000004568 cement Substances 0.000 abstract description 9
- 230000006866 deterioration Effects 0.000 abstract description 4
- 239000006185 dispersion Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 239000003513 alkali Substances 0.000 abstract description 2
- 239000000203 mixture Substances 0.000 description 14
- 238000000034 method Methods 0.000 description 11
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 10
- 238000009412 basement excavation Methods 0.000 description 9
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 7
- 239000013535 sea water Substances 0.000 description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 6
- 229910000027 potassium carbonate Inorganic materials 0.000 description 5
- 229910000288 alkali metal carbonate Inorganic materials 0.000 description 4
- 150000008041 alkali metal carbonates Chemical class 0.000 description 4
- 239000011734 sodium Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- DPXJVFZANSGRMM-UHFFFAOYSA-N acetic acid;2,3,4,5,6-pentahydroxyhexanal;sodium Chemical compound [Na].CC(O)=O.OCC(O)C(O)C(O)C(O)C=O DPXJVFZANSGRMM-UHFFFAOYSA-N 0.000 description 3
- 230000018044 dehydration Effects 0.000 description 3
- 238000006297 dehydration reaction Methods 0.000 description 3
- MTHSVFCYNBDYFN-UHFFFAOYSA-N diethylene glycol Chemical compound OCCOCCO MTHSVFCYNBDYFN-UHFFFAOYSA-N 0.000 description 3
- 238000001879 gelation Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 229920000642 polymer Polymers 0.000 description 3
- 229910000029 sodium carbonate Inorganic materials 0.000 description 3
- 235000017550 sodium carbonate Nutrition 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- MUZDXNQOSGWMJJ-UHFFFAOYSA-N 2-methylprop-2-enoic acid;prop-2-enoic acid Chemical compound OC(=O)C=C.CC(=C)C(O)=O MUZDXNQOSGWMJJ-UHFFFAOYSA-N 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 2
- 229920002125 Sokalan® Polymers 0.000 description 2
- 150000004645 aluminates Chemical class 0.000 description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- BYFGZMCJNACEKR-UHFFFAOYSA-N aluminium(i) oxide Chemical class [Al]O[Al] BYFGZMCJNACEKR-UHFFFAOYSA-N 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 239000003792 electrolyte Substances 0.000 description 2
- 229920003145 methacrylic acid copolymer Polymers 0.000 description 2
- 159000000001 potassium salts Chemical class 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 235000011121 sodium hydroxide Nutrition 0.000 description 2
- 159000000000 sodium salts Chemical class 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 229920003169 water-soluble polymer Polymers 0.000 description 2
- HZAXFHJVJLSVMW-UHFFFAOYSA-N 2-Aminoethan-1-ol Chemical compound NCCO HZAXFHJVJLSVMW-UHFFFAOYSA-N 0.000 description 1
- 229910017090 AlO 2 Inorganic materials 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-M Bisulfite Chemical compound OS([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-M 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000008186 active pharmaceutical agent Substances 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- ANBBXQWFNXMHLD-UHFFFAOYSA-N aluminum;sodium;oxygen(2-) Chemical compound [O-2].[O-2].[Na+].[Al+3] ANBBXQWFNXMHLD-UHFFFAOYSA-N 0.000 description 1
- 229960000892 attapulgite Drugs 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000003311 flocculating effect Effects 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229940117841 methacrylic acid copolymer Drugs 0.000 description 1
- 229910052625 palygorskite Inorganic materials 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229910001388 sodium aluminate Inorganic materials 0.000 description 1
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 description 1
- 229920001864 tannin Polymers 0.000 description 1
- 239000001648 tannin Substances 0.000 description 1
- 235000018553 tannin Nutrition 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 150000004684 trihydrates Chemical class 0.000 description 1
- 230000002747 voluntary effect Effects 0.000 description 1
Abstract
Description
【発明の詳細な説明】 〈産業上の利用分野〉 本発明は掘削泥水用添加剤に関する。[Detailed description of the invention] <Industrial application field> The present invention relates to an additive for drilling mud.
〈従来の技術、および問題点〉
従来、地盤掘削工法にはベントナイト泥水、ポリマー泥
水などの泥水が使用されているが、海水、セメントその
他の電解質によって泥水性能が劣化することが知られて
いる。<Prior Art and Problems> Conventionally, muddy water such as bentonite muddy water or polymer muddy water has been used in ground excavation methods, but it is known that the performance of the muddy water deteriorates due to seawater, cement, and other electrolytes.
このため、重合度ｓ、ｏｏｏ以下のポリアクリル酸の一
価塩と繊維素グリコール酸ソーダ（ＣＭＣ）からなる添
加剤（特公昭４９−４６７６３号公報）が提案されてい
る。For this reason, an additive (Japanese Patent Publication No. 49-46763) consisting of a monovalent salt of polyacrylic acid with a degree of polymerization of s, ooo or less and cellulose sodium glycolate (CMC) has been proposed.
しかし、塩水、セメント等の混入による泥水性能の劣化
防止が充分でなく、また細菌による腐敗劣化の発生とい
う問題があった。However, there was a problem in that it was not sufficient to prevent deterioration of muddy water performance due to contamination with salt water, cement, etc., and rot and deterioration caused by bacteria occurred.
く問題点を解決するための手段〉
本発明者らは、このような問題点を解決するためｔｉｐ
検討した結果、本発明に到達した。すなわち、本発明は
重合度が５，０００以下の（アクリル酸および／または
メタクリル酸）系（共）重合体の一価塩（ａｌとアルミ
ン酸の一価塩（′ｂ）からなる掘削泥水用添加剤である
。Means for Solving the Problems> In order to solve the problems, the present inventors have proposed the following tips:
As a result of study, we have arrived at the present invention. That is, the present invention provides a solution for drilling mud consisting of a monovalent salt (al and a monovalent salt ('b) of an acrylic acid and/or methacrylic acid)-based (co)polymer having a degree of polymerization of 5,000 or less. It is an additive.
本発明における重合度がｓ、ｏｏｏ以下のくアクリル酸
および／またはメタクリル酸）系（共）重合体の一価塩
（ａ）において、（アクリル酸および／またはメタクリ
ル酸）系（共）重合体としては、アクリル酸−メタクリ
ル酸共重合体、アクリル酸重合体およびメタクリル酸重
合体が挙げられる。アクリル酸−メタクリル酸共重合体
におけるアクリル酸の量は特に限定を受けない。また、
一価塩としては、アルカリ金属塩（ナトリウム塩、カリ
ウム塩など）、アンモニウム塩およびアミン塩〔モノエ
タノールアミン、ジェタノールアミン、トリエタノール
アミン、アルキル（Ｃ１−Ｃ４）アミン塩など〕が挙げ
られる。好ましくはナトリウム塩およびカリウム塩であ
る。In the monovalent salt (a) of an acrylic acid and/or methacrylic acid)-based (co)polymer having a degree of polymerization of s, ooo or less in the present invention, the (acrylic acid and/or methacrylic acid)-based (co)polymer Examples include acrylic acid-methacrylic acid copolymers, acrylic acid polymers, and methacrylic acid polymers. The amount of acrylic acid in the acrylic acid-methacrylic acid copolymer is not particularly limited. Also,
Examples of monovalent salts include alkali metal salts (sodium salts, potassium salts, etc.), ammonium salts, and amine salts (monoethanolamine, jetanolamine, triethanolamine, alkyl (C1-C4) amine salts, etc.). Preferred are sodium and potassium salts.
（アクリル酸および／またはメタクリル酸）系（共）重
合体の重合度は、好ましくは５０〜２，５００である。The degree of polymerization of the (acrylic acid and/or methacrylic acid) type (co)polymer is preferably 50 to 2,500.
重合度がｓ、ｏｏｏを越えると凝集作用が強まるため土
壌やセメントを凝集しやすく、また重金属イオンが混入
したとき不溶解物となり易いため、掘削泥水がゲル状と
なり、泥水性能が悪化する。When the degree of polymerization exceeds s, ooo, the flocculating action is strengthened, making it easy to flocculate soil and cement, and when heavy metal ions are mixed in, they tend to become insoluble substances, so the drilling mud becomes gel-like and the performance of the mud deteriorates.
アルミン酸の一価塩（ｂ）としては、含水メタアルミン
酸アルカリ金属塩（ＭＩ Ａｌ ０２ ・ｍ Ｈ２
０（Ｍｌはアルカリ金属を示す）たとえばＮａ ＡｌＯ
２・５／４ Ｈ２０、Ｎａ Ａｌ ０２ ・３Ｈ２０お
よびＫＡＩ ０２ ・ ３／２ Ｈ２０） 、無水アル
ミン酸アルカリ金属塩（ＭＩ Ａｌ ０またとえばＮａ
ＡｌＯ２およびＫＡＩ ０２ ；およびオルトアルミ
ン酸ナトリウムたとえばＮａ ３ＡＩ Ｏ３）が挙げら
れる。アルミン酸のアルカリ金属塩において、Ａｌ２Ｏ
３に対するＭ１２００モル比（ｘ）は、通常１．０〜２
．５であり、好ましくは１．０−１．５である。As the monovalent salt of aluminate (b), hydrous metaaluminate alkali metal salt (MI Al 02 ・m H2
0 (Ml represents an alkali metal) For example, Na AlO
2・5/4 H20, Na Al 02 ・3H20 and KAI 02 ・3/2 H20), alkali metal aluminate anhydride (MI Al 0 or Na
AlO2 and KAI02; and sodium orthoaluminates such as Na3AIO3). In alkali metal salts of aluminate, Al2O
The molar ratio (x) of M1200 to 3 is usually 1.0 to 2
．． 5, preferably 1.0-1.5.
これらアルカリ金属塩のうち好ましいのはナトリウム塩
である。Among these alkali metal salts, sodium salts are preferred.
アルミン酸ナトリウムは、一般に、アルミナ水和物と苛
性ソーダを混合、加熱、攪拌し、反応せしめて得られる
。たとえば、アルミナ３水和物と苛性ソーダを約１００
〜１５０℃の温度にて反応せしめ晶析処理することによ
って取得することができるが、その製造方法については
特に制約はなく、どのような方法によってもよい。Sodium aluminate is generally obtained by mixing alumina hydrate and caustic soda, heating, stirring, and reacting them. For example, about 100% of alumina trihydrate and caustic soda
Although it can be obtained by reaction and crystallization treatment at a temperature of ~150°C, there are no particular restrictions on the manufacturing method, and any method may be used.
アルミン酸の一価塩山）とともに必要により炭酸カリウ
ムを含有する炭酸アリカリ金属塩を併用することができ
る。炭酸カリウムを含有する炭酸アルカリ金属塩におい
て、炭酸カリウムとしては無水塩、−水塩、二水塩およ
び五水塩が挙げられる。If necessary, an alkali carbonate metal salt containing potassium carbonate can be used in combination with the monovalent aluminic acid salt. Among the alkali metal carbonate salts containing potassium carbonate, potassium carbonate includes anhydrous salts, -hydrate salts, dihydrate salts, and pentahydrate salts.
これらのうち好ましいのは無水塩である。炭酸カリウム
のほかに他の炭酸アルカリ金属塩を含んでいてもよく、
他の炭酸アルカリ金属塩としては炭酸ナトリウムが挙げ
られる。炭酸ナトリウムとしては無水塩（ソーダ灰）、
−水塩および十水塩が挙げられるが、好ましいのはソー
ダ灰である。Among these, preferred are anhydrous salts. In addition to potassium carbonate, it may contain other alkali metal carbonate salts,
Other alkali metal carbonate salts include sodium carbonate. As sodium carbonate, anhydrous salt (soda ash),
- Water salts and decahydrate salts may be mentioned, but soda ash is preferred.
掘削泥水用添加剤中の（ａｌの純分量は（ａｌとへ）の
純分合計重量に対して通常１５〜８５重量％、好ましく
は３０〜７０重量％である。１５重量％未満ではセメン
ト混入時にゲル化を起こし、８５重量％を越えると海水
混入時にゲル化を起こし、いずれも泥水性能が劣化する
。The pure content of (Al) in the additive for drilling mud is usually 15 to 85% by weight, preferably 30 to 70% by weight, based on the total weight of the pure content of (Al and He). If it is less than 15% by weight, it is mixed with cement. If it exceeds 85% by weight, gelation occurs when seawater is mixed in, and muddy water performance deteriorates in both cases.
掘削泥水用添加剤中のアルミン酸の一価塩（ｂｌの純分
量は（ａ）と（ｂｌの純分合計重量に対して通常１５〜
８５重量％、好ましくは３０〜７０重量％である。１５
重量％未満では海水混入時にゲル化を起こし、８５重量
％を越えるとセメント混入時にゲル化を起こし、いずれ
も泥水性能が劣化する。The pure amount of aluminic acid monovalent salt (bl) in the additive for drilling mud is usually 15 to
85% by weight, preferably 30-70% by weight. 15
If it is less than 85% by weight, gelation will occur when seawater is mixed in, and if it exceeds 85% by weight, gelation will occur when cement is mixed, and in either case, muddy performance deteriorates.
アルミン酸の一価塩山）と炭酸カリウムを含有する炭酸
アルカリ金属塩の重量比は特に限定されないが、通常１
１〜１００である。The weight ratio of aluminic acid (monovalent salt) and alkali metal carbonate containing potassium carbonate is not particularly limited, but is usually 1
It is 1-100.
本発明の添加剤を添加する対象となる掘削泥水としては
、ベントナイト、アタパルジャイト、セリサイトなどの
無機粘土質の泥水、水溶性高分子を骨格とするポリマー
泥水などが挙げられる。これらのうち、好ましいのはベ
ントナイト泥水である。Examples of the drilling mud to which the additive of the present invention is added include inorganic clay mud such as bentonite, attapulgite, and sericite, and polymer mud having a water-soluble polymer skeleton. Among these, bentonite mud is preferred.
掘削泥水に対する掘削泥水用添加剤の添加量（純分量）
は通常０．０１〜５重量％、好ましくは０．０５〜３重
量％である。０．０１重量％未満では海水、セメントそ
の他の電解質による泥水性能の劣化を防止する効果が期
待できず、５重量％を越えると添加しただけの効果が期
待できず経済的に不利である。Amount of additive for drilling mud added to drilling mud (pure amount)
is usually 0.01 to 5% by weight, preferably 0.05 to 3% by weight. If it is less than 0.01% by weight, it cannot be expected to be effective in preventing deterioration of muddy water performance due to seawater, cement, or other electrolytes, and if it exceeds 5% by weight, the effect of adding it cannot be expected and is economically disadvantageous.
掘削泥水に本発明の掘削泥水用添加剤を添加するにあた
り、その添加方法としては以下の方法が挙げられる。When adding the additive for drilling mud of the present invention to drilling mud, the following method can be mentioned as the addition method.
（１） ｔａ＋および（ｂ）をあらかじめ混合してお
いて添加する方法。(1) A method in which ta+ and (b) are mixed in advance and added.
（２１（ａ）と（１））を別々に添加する方法；これに
は、たとえば以下の２方法がある。A method of adding (21(a) and (1)) separately; this includes, for example, the following two methods.
■ （ａｌに次いで（ｂ）を加える方法。■ (Method of adding (b) next to al.
■ （ａｌと（′ｂ）を同時に加える方法。■ Method of adding (al and ('b) at the same time.
これらの添加方法のうち、好ましくは（２）の■の方法
である。本発明の掘削泥水用添加剤は泥水を攪拌しなが
ら添加するのが好ましい。Among these addition methods, method (2) (2) is preferred. The additive for drilling mud of the present invention is preferably added while stirring the mud.
この様にして得られた地盤掘削用泥水組成物は、通常比
重力筒、０２〜１．３５、ファンネル粘度が２１〜４５
秒、１０分ゲルストレングスが２パスカル以下、脱水量
が４０ｍ ｌ以下などの物性を保持する。The mud composition for ground excavation obtained in this way usually has a specific gravity of 02 to 1.35 and a funnel viscosity of 21 to 45.
It maintains physical properties such as gel strength of less than 2 Pascals in seconds and 10 minutes, and dehydration amount of less than 40 ml.
泥水組成物を用いて地盤掘削を行う実施の態様としでは
、まず本発明の掘削泥水用添加剤と無機粘土類水溶性高
分子などとを水に添加して泥水組成物を調整する。次い
でこの泥水組成物を掘削部へ循環させながら掘削機を用
いて地盤を掘削する。In an embodiment in which ground excavation is carried out using a mud water composition, first, the additive for drilling mud of the present invention, an inorganic clay water-soluble polymer, etc. are added to water to prepare a mud water composition. Next, the ground is excavated using an excavator while circulating this muddy water composition to the excavation part.
この場合、泥水組成物は常に掘削部内を満たして、摩擦
熱の吸収・放熱・潤滑等の作用や掘削土砂の地上への搬
出を行うことにより掘削を進めるとともに、不透水性の
泥壁を形成して掘削孔壁の崩壊を防止している。この様
にして所定の掘削が完了した後に、適宜鉄筋枠組を入れ
底部よりコンクリートを投入して泥水を上部よりオーバ
ーフローさせながら掘削部内にコンクリートを満たして
杭または壁を構築する。コンクリートと置換された泥水
は再びタンク内に戻され再使用される。In this case, the mud composition always fills the inside of the excavation area and acts to absorb frictional heat, dissipate heat, lubricate, etc., and transport excavated soil to the ground to advance the excavation and form an impermeable mud wall. This prevents the borehole wall from collapsing. After the prescribed excavation is completed in this manner, a reinforced framework is appropriately installed, concrete is poured from the bottom, and while muddy water overflows from the top, the excavation is filled with concrete to construct a pile or wall. The muddy water that replaced the concrete is returned to the tank and reused.
本発明の添加剤は（ａｔと（ｂｌとを含むものであるが
、他に溶解促進剤（たとえばエチレングリコール、ジエ
チレングリコール、ポリエチレングリコールなど）、分
散解こう剤（たとえばニトロフミン酸ソータ、タンニン
類、リグニンスルフォン酸塩、縮合リン酸塩など）を適
宜併用することも可能である。The additives of the present invention include (at and (bl), and in addition, dissolution promoters (e.g., ethylene glycol, diethylene glycol, polyethylene glycol, etc.), dispersing peptizers (e.g., nitrofumic acid sorta, tannins, lignin sulfonic acid, salts, condensed phosphates, etc.) may be used in combination as appropriate.
〈実 施 例〉
以下、実施例により本発明を説明するが、本発明はこれ
に限定されるものではない。実施例中の部はＭ量基準で
ある。また、泥水温度は２０±３℃である。なお、実施
例および比較例における試験方法は次の通りである。<Examples> The present invention will be described below with reference to Examples, but the present invention is not limited thereto. The parts in the examples are based on the amount of M. Moreover, the temperature of mud water is 20±3°C. The test methods in Examples and Comparative Examples are as follows.
（１） ファンネル粘度（ＦＶ） ？５００ ｃｃ
のファンネル粘度計で測定した。(1) Funnel viscosity (FV)? 500cc
Measured using a funnel viscometer.
単位は秒。The unit is seconds.
（２１１０分ゲルストレングス（１０Ｇｅｔ） ：フ
ァンＶＧメータで測定した。(2110 minute gel strength (10Get): Measured with a fan VG meter.
単位はパスカル（Ｐａ）。The unit is pascal (Pa).
（３）脱水量：
ＡＰＩ規格による濾過機を用い、３ ｋｇ ／ ｃＩＩ
Ｉの圧力下３０分後の脱水量を測定した。(3) Dehydration amount: 3 kg/cII using a filter according to API standards
The amount of water removed after 30 minutes under the pressure of I was measured.
単位はｍｌ。The unit is ml.
（４）対セメント混入安定性：
泥水１００部にポルトランドセメント１〜３部を添加し
て充分に混合後１日経過した後に、上記（１１〜（３）
の泥水性能を測定した。(4) Stability against cement mixing: 1 to 3 parts of Portland cement was added to 100 parts of muddy water, and 1 day after mixing thoroughly, the above (11 to (3)
The performance in muddy water was measured.
（５）対海水混入安定性；
泥水１００部に「アク７マリンＳｊ Ｃへ州薬品Ｍ製
人工海水、２５倍濃縮品〕を１および３部添加して充分
に混合した後放置し、１日経過した後に上記（１１〜（
３）の泥水性能を測定した。(5) Stability against seawater contamination; Add 1 and 3 parts of "Aku7 Marine Sj C Heshu Yakuhin M artificial seawater, 25 times concentrated product" to 100 parts of muddy water, mix well, and leave for 1 day. After the elapsed time, the above (11-(
3) The muddy water performance was measured.
実施例１〜５および比較例１〜４
本発明の掘削泥水用添加剤（実施例１〜５）および比較
添加剤（比較例１〜４）の組成を第１表に示す。Examples 1 to 5 and Comparative Examples 1 to 4 Table 1 shows the compositions of the drilling mud additives (Examples 1 to 5) and comparative additives (Comparative Examples 1 to 4) of the present invention.
本頁以下余白
第１表
第 １ 表 頷 き）
ジューサーミキサーに清水１００部およびベントナイト
〔クニミネ工業■製りニゲルＶＩ） ６部を投入し、
２分間攪拌した。次いで第１表に示される本発明の掘削
泥水用添加剤および比較品を投入し、更に２分間攪拌す
ることによって泥水組成物を得た。その泥水性能を閣ぺ
た結果を第２表に示す。100 parts of fresh water and 6 parts of bentonite (Niger VI manufactured by Kunimine Kogyo) were added to a juicer mixer, and
Stir for 2 minutes. Next, the additive for drilling mud of the present invention and a comparative product shown in Table 1 were added, and the mixture was further stirred for 2 minutes to obtain a mud water composition. Table 2 shows the results of comparing the muddy water performance.
本頁以下余白 第２表頷き〉 本発明の添加剤の泥水性能は良好であった。Margin below this page Table 2 Nod> The mud water performance of the additive of the present invention was good.
なお、比較例２の泥水は、１週間放置後腐敗臭が発生し
、粘性が大幅に低下することが確認された。In addition, it was confirmed that the muddy water of Comparative Example 2 developed a putrid odor after being left for one week, and its viscosity was significantly reduced.
〈発明の効果〉 本発明の掘削泥水用添加剤は、下記効果を有する。<Effect of the invention> The drilling mud additive of the present invention has the following effects.
（１） 本発明の添加剤を用いた組成物は、掘削中に
海水や塩水が流入してきても泥水物性（分散安定性、脱
水量など）が大きく変化しない。(1) In the composition using the additive of the present invention, the physical properties of mud (dispersion stability, amount of water removed, etc.) do not change significantly even when seawater or salt water flows in during excavation.
（２）本発明の添加剤を用いた組成物は、セメント等が
混入しても泥水物性（分散安定性、脱水量など）がほと
んど変化しない。このため繰り返し使用が可能である。(2) In the composition using the additive of the present invention, the physical properties of mud (dispersion stability, amount of water removed, etc.) hardly change even if cement or the like is mixed. Therefore, it can be used repeatedly.
（３）本発明の添加剤を用いた組成物は、ＣＭＣなどの
生物分解されやすいものを含まないため、腐敗しに（い
。(3) Compositions using the additives of the present invention do not contain easily biodegradable substances such as CMC, so they do not spoil easily.
（４）本発明の添加剤を用いた組成物は、ベントナイト
などの無機粘土類の分散安定性に優れる。(4) A composition using the additive of the present invention has excellent dispersion stability of inorganic clays such as bentonite.
（５）本発明の添加剤を用いた組成物は、脱水量が少な
く、泥壁形成性すなわち掘削孔の崩壊防止性能に優れる
。(5) A composition using the additive of the present invention has a small amount of water dehydration and is excellent in mud wall forming property, that is, in preventing collapse of a drill hole.
特許出願人 三洋化成工業株式会社
清水建設株式会社
代 理 人 弁理士 船越 康弘
手続補正書（自発）
昭和６１年６月１３日
】、事件の表示
昭和６１年特剖課１１１１５４号
２、発明の名称
掘削泥水用添加剤
３、補正をする者
事件との関係 特許出願人
住所 東京都中央区京橋二丁目１６番１号名称 清水建
設株式会社
住所 京都市東山区−橋野木町１１番地の１名称三洋化
成工業株式会社
４、代理人 魯６０１−１３
置 ０７５−５７１−１１２２
７、補正の内容
明細書第７頁第１缶千目にｒ４０ｍｌＪとあるのを、ｌ
２５ｍ１ Ｊと訂正すも。Patent Applicant: Sanyo Chemical Industries, Ltd. Shimizu Corporation, Representative, Patent Attorney: Yasuhiro Funakoshi Procedural Amendment (Voluntary) June 13, 1986], Indication of the Case: 1986 Special Investigation Division No. 111154 No. 2, Name of the Invention Drilling mud additive 3, relationship with the amended case Patent applicant address: 2-16-1, Kyobashi, Chuo-ku, Tokyo Name: Shimizu Corporation Address: 1: 1-1, Hashinogi-cho, Higashiyama-ku, Kyoto City: Sanyo Chemical Industries, Ltd. Co., Ltd. 4, Agent Lu 601-13 Address: 075-571-1122 7. In the statement of contents of the amendment, page 7, 1st can, 1000th mark, r40mlJ.
I corrected it to 25m1 J.
Claims (1)
たはメタクリル酸）系（共）重合体の一価塩（ａ）とア
ルミン酸の一価塩（ｂ）からなる掘削泥水用添加剤。 ２、（ａ）と（ｂ）の純分合計重量に対する（ａ）の純
分量が１５〜８５重量％である特許請求の範囲第１項記
載の添加剤。 ３、掘削泥水に（ａ）と（ｂ）の純分合計重量で０．０
１〜５重量％添加する特許請求の範囲第１項または第２
項記載の添加剤。 ４、掘削泥水がベントナイト泥水である特許請求の範囲
第１項〜第３項のいずれか一項に記載の添加剤。 ５、一価塩がアルカリ金属塩、アンモニウム塩およびア
ミン塩からなる群より選ばれた塩である特許請求の範囲
第１項〜第４項のいずれか一項に記載の添加剤。[Claims] 1. Consisting of a monovalent salt (a) of a (co)polymer (acrylic acid and/or methacrylic acid) having a degree of polymerization of 5,000 or less and a monovalent salt of aluminic acid (b) Additive for drilling mud. 2. The additive according to claim 1, wherein the pure content of (a) is 15 to 85% by weight based on the total weight of pure parts of (a) and (b). 3. The total weight of pure components (a) and (b) in the drilling mud is 0.0
Claim 1 or 2 adding 1 to 5% by weight
Additives listed in section. 4. The additive according to any one of claims 1 to 3, wherein the drilling mud is bentonite mud. 5. The additive according to any one of claims 1 to 4, wherein the monovalent salt is a salt selected from the group consisting of alkali metal salts, ammonium salts, and amine salts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11115486A JPS62267388A (en) | 1986-05-14 | 1986-05-14 | Additive for digging muddy water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11115486A JPS62267388A (en) | 1986-05-14 | 1986-05-14 | Additive for digging muddy water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62267388A true JPS62267388A (en) | 1987-11-20 |
| JPH048470B2 JPH048470B2 (en) | 1992-02-17 |
Family
ID=14553834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11115486A Granted JPS62267388A (en) | 1986-05-14 | 1986-05-14 | Additive for digging muddy water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62267388A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6322919A (en) * | 1986-07-16 | 1988-01-30 | Shimizu Constr Co Ltd | Construction of cast-in-place concrete pile |
-
1986
- 1986-05-14 JP JP11115486A patent/JPS62267388A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6322919A (en) * | 1986-07-16 | 1988-01-30 | Shimizu Constr Co Ltd | Construction of cast-in-place concrete pile |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH048470B2 (en) | 1992-02-17 |
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