JPS6259690A - Testing of muddy water - Google Patents
Testing of muddy waterInfo
- Publication number
- JPS6259690A JPS6259690A JP19901385A JP19901385A JPS6259690A JP S6259690 A JPS6259690 A JP S6259690A JP 19901385 A JP19901385 A JP 19901385A JP 19901385 A JP19901385 A JP 19901385A JP S6259690 A JPS6259690 A JP S6259690A
- Authority
- JP
- Japan
- Prior art keywords
- muddy water
- water
- wall
- test paper
- test
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 77
- 238000012360 testing method Methods 0.000 title claims abstract description 46
- 238000007654 immersion Methods 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims description 5
- 238000010521 absorption reaction Methods 0.000 abstract description 4
- 230000018044 dehydration Effects 0.000 abstract description 4
- 238000006297 dehydration reaction Methods 0.000 abstract description 4
- 238000007598 dipping method Methods 0.000 abstract 1
- 238000011179 visual inspection Methods 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 7
- 238000010998 test method Methods 0.000 description 6
- 238000009412 basement excavation Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005259 measurement Methods 0.000 description 3
- 239000000654 additive Substances 0.000 description 1
- 229910000278 bentonite Inorganic materials 0.000 description 1
- 239000000440 bentonite Substances 0.000 description 1
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000002301 combined effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Landscapes
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
Description
【発明の詳細な説明】 （産業上の利用分野） この発明は、地中連続壁工事、アースドリル。[Detailed description of the invention] (Industrial application field) This invention is an earth drill for underground continuous wall construction.
リバースサーキュレーションなどの場所打杭工事、シー
ルド工事などで地盤の安定掘削を確保するために用いら
れる泥水の試験方法に関し、特に泥水の造壁性を評価す
る試験方法に関する。This paper relates to testing methods for muddy water used to ensure stable excavation of the ground in driving-in-place pile construction such as reverse circulation, shield construction, etc., and in particular to testing methods for evaluating wall-building properties of muddy water.
（従来技術）
周知のように、建築土木工事、例えば連続地中壁工事で
は、掘削孔壁の崩壊を防止するためなどの目的でベント
ナイトを水に懸濁したものに、必要に応じて有機、無機
の添加剤を加えた泥水が用いられる。(Prior Art) As is well known, in construction and civil engineering work, such as continuous underground wall construction, bentonite is suspended in water for the purpose of preventing the collapse of the borehole wall, and if necessary, organic Mud water with inorganic additives is used.
泥水に要求される機能としては、壁面の安定化機能、掘
削土砂の保持・運搬・分離のための媒体機能、コンクリ
ート打設時の置換容易性などが必要があって、特に壁面
の安定化機能は最も基本的なものとなる。The functions required of muddy water include stabilizing the wall surface, medium function for holding, transporting, and separating excavated soil, and ease of replacement during concrete pouring. is the most basic one.
泥水が壁面を安定化して崩壊を防止する詳細なメカニズ
ムは、未だ十分に解明されていないが、泥水中の台秤の
成分の複合作用によるものと推測され、特に掘削壁面に
不透水性の泥膜を形成し、泥水の散逸を防止して泥水位
を保つ作用が、壁面の安定化に大きく寄与していること
が知られている。The detailed mechanism by which muddy water stabilizes the wall surface and prevents it from collapsing has not yet been fully elucidated, but it is presumed that it is due to the combined effect of the components of the platform scale in the muddy water, and in particular the formation of an impermeable mud film on the excavated wall surface. It is known that the action of forming muddy water, preventing the dissipation of muddy water, and maintaining the muddy water level greatly contributes to the stabilization of the wall surface.
従って、泥水がどの程度泥膜を形成する作用（ｆｉ壁作
用）があるかは、泥水を用いる工事では極めて重要な管
理項目であって、従来はこれを造壁性試験と称して第３
図に示す如き試験機で試験していた。Therefore, the extent to which muddy water has the effect of forming a mud film (FI wall effect) is an extremely important control item in construction projects that use muddy water.
The test was carried out using a testing machine as shown in the figure.
１ｉｉ１図に示す試験機は、ＡＰＩ規格（アメリカ石油
Ｗ会規格）に基づくしのであって、両端の開口した円筒
シリンダー１の下部に、バッキング２を介して濾紙３．
スクリーン４．ドレーンチューブ５を挿着し、シリンダ
ー１内に測定する泥水を２９０−以上注入した後、バッ
キング２を介して蓋６を上部にＫＭし、これを支持フレ
ーム７にセラ１へしで、その下方にメスシリンダー８を
置き、コンプレツリーなどを用いてシリンダー１内に３
ｋ。The testing machine shown in Figure 1ii1 is based on the API standard (American Petroleum World Association standard), and a filter paper 3.
Screen 4. After inserting the drain tube 5 and injecting 290 mm or more of muddy water to be measured into the cylinder 1, place the lid 6 on top through the backing 2, put it on the support frame 7 to the cellar 1, and place it below. Place graduated cylinder 8 in
k.
ｆ／ｄの圧力で３０分間加圧する。Pressurize for 30 minutes at a pressure of f/d.
そして、メスシリンダー７内に流出した脱水量と、−紙
３上に堆積したケーキの厚さを測定する。Then, the amount of dehydrated water flowing into the measuring cylinder 7 and the thickness of the cake deposited on the paper 3 are measured.
造壁性は脱水量が少い程優れており、一般的な管理基準
値としては５０〜８０−以下とされている。The smaller the amount of water removed, the better the wall-building properties are, and the general control standard value is 50 to 80 or less.
（発明が解決しようとする問題点）
上述した試験機による方法には以下に説明する如き欠点
があった。(Problems to be Solved by the Invention) The method using the above-mentioned testing machine had the following drawbacks.
すなわら、上記試験機では、一種類の泥水に対して試験
時間が約４０分程度かかり作業性が悪く、しかも試験機
は加圧するため簡単に運搬できず、掘削作業現場で直接
使用できない不便さもあった。In other words, with the above testing machine, it takes about 40 minutes to test one type of muddy water, and the workability is poor.Moreover, the testing machine is pressurized, so it cannot be easily transported, and it is inconvenient that it cannot be used directly at the excavation work site. There was too.
ところで、この種の試験は、泥水の作成時、掘削孔内に
充満したとき、スライム処理後の孔内泥水、コンクリー
トの打設でオーバーフローした泥水が再使用可能かどう
か、コンクリート打設後の回収泥水の状態をチェックす
る際などにその反復数回ずつ行なわれる。By the way, this type of test examines whether muddy water can be reused when creating muddy water, when it fills the borehole, muddy water in the hole after slime treatment, muddy water that overflows during concrete pouring, and recovery after concrete pouring. This process is repeated several times when checking the condition of muddy water.
そして試験によって適性でないと判断されると、配合調
整が行なわれるため、試験はリアルタイムで迅速に行な
うことが望ましいが、従来の試験機では、上述のように
測定に時間がかかり、現場に設置できないためこれに対
応できなかった。If the test determines that the product is not suitable, the mixture is adjusted, so it is desirable to conduct the test quickly in real time. However, as mentioned above, with conventional testing machines, it takes time to perform measurements and cannot be installed on-site. Therefore, we were unable to respond to this.
この発明はこのような問題点に鑑みてなされたものであ
って、その目的とするところは、短時間に泥水の造壁性
試験を現場において迅速に可能にし、このことにより泥
水の品質管理を容易且つ確実に行える試験方法を４供す
ることにある。This invention was made in view of the above problems, and its purpose is to enable rapid on-site wall-building tests of muddy water in a short period of time, thereby improving the quality control of muddy water. The objective is to provide four test methods that can be easily and reliably performed.
（問題点を解決するための手段）
上記目的を達成するために、この発明は、予め泥水の造
壁性を示す指標線を設定した試験紙を用い、この試験紙
の一端に設けられた泥水浸漬部を泥水中に所定時間浸漬
した際に泥水中の水分が試験紙を毛管上昇する高さから
泥水の造壁性を測定することを特徴とする。(Means for Solving the Problems) In order to achieve the above object, the present invention uses a test paper on which an index line indicating the wall-building properties of muddy water is set in advance, and It is characterized in that the wall-building properties of muddy water are measured from the height at which water in the muddy water capillary rises on the test paper when the immersed part is immersed in muddy water for a predetermined period of time.
（実施例および作用）
以下、この発明の好適な実施例について添附図面を参照
にして詳細に説明する。(Embodiments and Effects) Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.
第１図はこの発明に係る試験方法に使用する試験紙の一
例を示している。FIG. 1 shows an example of a test paper used in the test method according to the present invention.
同図に示す試験紙１０は、短冊状の濾紙の下端に設けら
れた泥水浸漬部１２と、その上方に設けられた指標部１
４とからなり、指標部１４には予め泥水の造壁性を示す
指標線１６が設定されている。The test paper 10 shown in the same figure has a muddy water immersion part 12 provided at the lower end of a strip-shaped filter paper, and an indicator part 1 provided above the muddy water immersion part 12.
4, and an index line 16 indicating wall-building properties of muddy water is set in advance in the index section 14.
指標Ｉ！１１１６は、試験紙１０の泥水浸漬部１２を泥
水中に所定時間浸漬した際に、試験紙１０をこの泥水中
の水が毛管上昇する高さと、同じ泥水を前述したＡＰＩ
規格で試験した造壁性試験の脱水量１直と対応するもの
であって、泥水の配合量を代えて同じ試験を繰返して求
めた値である。Index I! 1116 indicates that when the muddy water immersion portion 12 of the test paper 10 is immersed in muddy water for a predetermined time, the height of the test paper 10 to which the water in this muddy water rises in a capillary, and the API mentioned above for the same muddy water.
This value corresponds to the amount of water removed in one shift of the wall-building test conducted in accordance with the standard, and is a value obtained by repeating the same test with different amounts of mud water.
この場合、毛管上昇高は濾紙の秤類、形状によって異な
るため、指標線１６を作成するために用いた試験紙と、
実際の測定に用いる試験紙とは、同材質、同形状のもの
を用いる。In this case, since the capillary rise height varies depending on the scale and shape of the filter paper, the test paper used to create the index line 16,
The test paper used in the actual measurement is made of the same material and has the same shape.
１紙の種類としては、均質で且つ吸水高度（細長いｄｊ
ｉ紙を水中に立てた場合に１０分間に上界づる高さ）の
大きいもの、例えば吸水高度が５ｃｍ〜１２ｃｍ程度の
ものが適当である。One type of paper is homogeneous and has a high water absorption level (elongated dj
It is appropriate to use a paper with a large height (the upper limit rises in 10 minutes when the paper is placed upright in water), for example, a water absorption height of about 5 cm to 12 cm.
また、濾紙の形状としては、短１１１１状のものを用い
るが、泥水への浸漬深さの大小が試験に影響するので、
これを一定にするために上記泥水浸漬部１２を設けてお
り、この長さは１〜２ｃｍが適当である。In addition, the shape of the filter paper used is short 1111, but since the depth of immersion in muddy water affects the test,
In order to keep this constant, the muddy water immersion section 12 is provided, and its length is suitably 1 to 2 cm.
上記構成の試験方法１０は、泥水の作成時、掘削孔内に
充満したときなどに、上記泥水浸漬部１２を泥水中に所
定時間、例えば１分程瓜浸漬し、泥水中の水の毛管上昇
高が指標線１６のどの位置にあるかによって、泥水の造
壁性を測定する。The test method 10 having the above configuration involves immersing the muddy water immersed portion 12 in the muddy water for a predetermined period of time, for example, about 1 minute, when the muddy water is created, when the excavation hole is filled, etc., and the capillary rise of the water in the muddy water is performed. The wall-building properties of muddy water are measured depending on where the height is on the index line 16.
ここで、浸漬後に毛管上昇高を読み取る際に、明かるさ
によって読み取るのが難しい場合もあるので、試験紙１
０に予め水溶性染料を含浸させ−Ｃ乾燥しておけば、毛
管上昇高が明確に目視できるためりＹ都合となる。When reading the capillary rise height after immersion, it may be difficult to read depending on the brightness, so use the test strip 1
It is convenient to pre-impregnate the 0 with a water-soluble dye and dry it, since the capillary rise height can be clearly seen visually.
次に、本発明の試験方法とＡＰＩ規格との相関関係につ
いて説明する。Next, the correlation between the test method of the present invention and the API standard will be explained.
本発明者らは、吸水高度１０ＣＩ、保留粒子径５μ、ａ
ｌｌｌ／ｊ＜時間２５秒（ヘルツベルヒ氏濾過速度試験
□を用い、１０ｃｊの濾紙面において２０℃の蒸溜水を
水柱ｉＱｃｍの圧力により２５秒で濾過できるもの）の
濾紙で、幅１０Ｉ、長さ５Ｑｍｍの試験紙１０を作り、
泥水浸漬部１２艮を１０ｍｍとし、指標部１４長を５０
ＩＩＩｌｌに設定した。The present inventors have a water absorption height of 10 CI, a retained particle size of 5 μ, and a
lll/j < time 25 seconds (using Herzberg's filtration speed test □, distilled water at 20°C can be filtered in 25 seconds with a pressure of iQcm of water column on a filter paper surface of 10cj), width 10I, length 5Qmm. Make 10 test papers of
The length of the muddy water immersion part 12 is 10 mm, and the length of the index part 14 is 50 mm.
It was set to IIIll.
この試験紙１０を泥水掘削工法の現場の各段階で採取し
た泥水中に、浸漬部１２を１分間浸漬した時の毛管上昇
高の高さく泥水浸漬部１２から上の長さ）を測定し、こ
れと同じ泥水を前述した八［）１規格に基づいて脱水量
を求め、これらの関係をプロプ１〜したものが第２図に
示すグラフである。This test paper 10 is immersed in muddy water collected at each stage of the muddy water excavation method site for 1 minute, and the capillary rise height (length above the muddy water immersed part 12) is measured, The amount of dewatering of the same muddy water was determined based on the above-mentioned 8[)1 standard, and the graph shown in FIG.
図からも明らかなように、本発明試験紙１０による毛管
上昇高と、ＡＰＩ規格による脱水量とは、ＡＰＩ規格の
脱水量が１００＋ｎｌ程度までは、かなり正確な比例関
係があって１、試験紙１０を用いて測定した結果をもと
にＡＰＩ規格の脱水量に変換できることを確認した。As is clear from the figure, there is a fairly accurate proportional relationship between the capillary rise height using the test paper 10 of the present invention and the dehydration amount according to the API standard until the dehydration amount according to the API standard is about 100+nl. It was confirmed that the dehydration amount can be converted to the API standard based on the results measured using 10.
以上の相関関係からも明らかなように、本発明の試験方
法を泥水の管理に用いれば、造壁性の試験が現場でしか
も迅速に行えることになる。As is clear from the above correlation, if the test method of the present invention is used for muddy water management, wall-building properties can be tested on-site and quickly.
（発明の効果）
以上、実施例で詳細に説朋したように、この発明による
試験方法では、泥水浸漬部を所定時間泥水中に浸漬づれ
ば、泥水の造壁性の評価が現場で短時間に且つ迅速に行
えるため、施工現場での泥水管理を確実且つＷＪ単に可
能ならしめ、省力化ひいては経済性の向上を大幅に図れ
る。(Effects of the Invention) As described above in detail in the examples, in the test method according to the present invention, by immersing the muddy water-immersed part in muddy water for a predetermined period of time, the wall-building properties of muddy water can be evaluated on-site in a short time. Since it can be carried out quickly, muddy water management at the construction site can be done reliably and easily, resulting in significant labor savings and economic efficiency.
第１図は本発明方法に用いる試験紙の一例を示す正面図
、第２図は同試験紙による試験結果とＡ１〕Ｉ規格の相
関関係を示すグラフである。
第３図は従来の試験機の分解図と測定状態の図である。FIG. 1 is a front view showing an example of the test paper used in the method of the present invention, and FIG. 2 is a graph showing the correlation between the test results using the same test paper and the A1]I standard. FIG. 3 is an exploded view of a conventional testing machine and a diagram of its measurement state.
Claims (2)
を用い、該試験紙の一端に設けられた泥水浸漬部を泥水
中に所定時間浸漬した際に泥水中の水分が試験紙を毛管
上昇する高さから泥水の造壁性を測定することを特徴と
する泥水の試験方法。(1) Using a test paper on which an index line indicating the wall-building properties of muddy water has been set in advance, when the muddy water immersion part provided at one end of the test paper is immersed in the muddy water for a predetermined time, the moisture in the muddy water is A testing method for muddy water characterized by measuring the wall-building properties of muddy water from the height of capillary rise.
ることを特徴とする特許請求の範囲第１項記載の泥水の
試験方法。(2) The method for testing muddy water according to claim 1, wherein the test paper is impregnated with a water-soluble dye and dried.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60199013A JPH0684966B2 (en) | 1985-09-09 | 1985-09-09 | Muddy water test method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60199013A JPH0684966B2 (en) | 1985-09-09 | 1985-09-09 | Muddy water test method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6259690A true JPS6259690A (en) | 1987-03-16 |
| JPH0684966B2 JPH0684966B2 (en) | 1994-10-26 |
Family
ID=16400656
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60199013A Expired - Fee Related JPH0684966B2 (en) | 1985-09-09 | 1985-09-09 | Muddy water test method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0684966B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020514755A (en) * | 2017-03-16 | 2020-05-21 | サウジ アラビアン オイル カンパニー | Sludge prevention agent performance evaluation device |
| US11796438B2 (en) | 2018-10-04 | 2023-10-24 | Saudi Arabian Oil Company | Vugular loss simulating vug tester for screening and evaluation of LCM products |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5362595A (en) * | 1976-11-17 | 1978-06-05 | Hitachi Ltd | Analytical method of kerosene mixed in gasoline |
| JPS5580052A (en) * | 1978-12-12 | 1980-06-16 | Matsushita Electric Ind Co Ltd | Spoilage measurement of kerosene |
| JPS59180671U (en) * | 1983-05-19 | 1984-12-03 | 株式会社環境科学コーポレーション | Test strips for measuring inosine and/or hypoxanthine |
-
1985
- 1985-09-09 JP JP60199013A patent/JPH0684966B2/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5362595A (en) * | 1976-11-17 | 1978-06-05 | Hitachi Ltd | Analytical method of kerosene mixed in gasoline |
| JPS5580052A (en) * | 1978-12-12 | 1980-06-16 | Matsushita Electric Ind Co Ltd | Spoilage measurement of kerosene |
| JPS59180671U (en) * | 1983-05-19 | 1984-12-03 | 株式会社環境科学コーポレーション | Test strips for measuring inosine and/or hypoxanthine |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020514755A (en) * | 2017-03-16 | 2020-05-21 | サウジ アラビアン オイル カンパニー | Sludge prevention agent performance evaluation device |
| US11796438B2 (en) | 2018-10-04 | 2023-10-24 | Saudi Arabian Oil Company | Vugular loss simulating vug tester for screening and evaluation of LCM products |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0684966B2 (en) | 1994-10-26 |
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