JP2655737B2 - Filler for holes and impermeable material - Google Patents
Filler for holes and impermeable materialInfo
- Publication number
- JP2655737B2 JP2655737B2 JP2076990A JP7699090A JP2655737B2 JP 2655737 B2 JP2655737 B2 JP 2655737B2 JP 2076990 A JP2076990 A JP 2076990A JP 7699090 A JP7699090 A JP 7699090A JP 2655737 B2 JP2655737 B2 JP 2655737B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- hole
- filler
- filled
- clay
- 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
- 239000000945 filler Substances 0.000 title claims description 20
- 239000000463 material Substances 0.000 title description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- 239000004927 clay Substances 0.000 claims description 11
- 239000011148 porous material Substances 0.000 claims description 10
- 229920002803 thermoplastic polyurethane Polymers 0.000 claims description 9
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 claims 1
- 239000011347 resin Substances 0.000 claims 1
- 229920005989 resin Polymers 0.000 claims 1
- 239000003566 sealing material Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000005259 measurement Methods 0.000 description 7
- 230000000903 blocking effect Effects 0.000 description 3
- 239000004568 cement Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000003673 groundwater Substances 0.000 description 3
- 239000008267 milk Substances 0.000 description 3
- 210000004080 milk Anatomy 0.000 description 3
- 235000013336 milk Nutrition 0.000 description 3
- 239000004570 mortar (masonry) Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000002522 swelling effect Effects 0.000 description 2
- 230000036962 time dependent Effects 0.000 description 2
- 239000012141 concentrate Substances 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
Landscapes
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明は地質調査や各種の測定をした後のボーリング
孔や、その他の孔を塞ぐために充填される孔用充填材及
び遮水部材に関するものである。DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention relates to a hole filling material and a water-blocking member to be filled to close a borehole after a geological survey or various measurements and other holes. It is.
（従来の技術） ダム基礎や地滑り、切土斜面の安定等において、地盤
の強度や変形に関する性質を知ることと、地下の間隙水
圧の分布とその経時変化を知ることとは極めて重要なこ
とである。(Conventional technology) It is extremely important to know the properties related to the strength and deformation of the ground and the distribution of underground pore water pressure and its change over time in dam foundation, landslide, stability of cut slope, etc. is there.
従来、後者における深い地盤内の間隙水圧の分布とそ
の経時変化の測定は、深さの異なる数多くのボーリング
孔を掘削し、該ボーリング孔に夫々高精度の間隙水圧計
を埋設して測定していた。Conventionally, in the latter case, the distribution of pore water pressure in deep ground and its time-dependent change are measured by drilling a number of boring holes having different depths and burying a high-precision pore water pressure gauge in each of the boring holes. Was.
ところが、この方法は多くのボーリング孔を掘削する
ため、多大の時間と経費を要するという問題があった。However, this method has a problem that it requires a great deal of time and cost to excavate many boring holes.
そこで、近年はこれらの問題を解決するために、第６
図に示すような測定が行われている。Therefore, in recent years, to solve these problems,
The measurement is performed as shown in the figure.
これは一本の測定孔Ｈ′内の水圧測定箇所に、砂等の
フィルター材２′がモルタルやセメントミルク等のシー
ル材５′を介して交互に充填され、これら多段状のフィ
ルター材２′中に水圧計４′が埋設されて、各測定深度
層における水圧が測定されている。This is because a filter material 2 'such as sand is alternately filled in a water pressure measuring point in one measuring hole H' via a sealing material 5 'such as mortar or cement milk, and these multi-stage filter materials 2' A water pressure gauge 4 'is embedded therein to measure the water pressure at each measurement depth layer.
（発明が解決しようとする課題） しかし、上記のような測定方法は、シール材にモルタ
ルやセメントミルクを使用しているため、シール材中を
貫通する水圧計の測定コード周辺に僅かな間隙ができ、
これが水みちとなって測定深度層相互へ水が浸入し、各
測定深度層における水圧を正確に測定することができな
いという問題があった。(Problems to be Solved by the Invention) However, in the above-described measuring method, since mortar or cement milk is used for the sealing material, a slight gap is formed around the measuring cord of the water pressure gauge penetrating through the sealing material. Can,
As a result, there is a problem that water infiltrates into the measurement depth layers as a water channel, and the water pressure at each measurement depth layer cannot be accurately measured.
また、地質調査やその他各種の測定をした後のボーリ
ング孔は、前記と同様にモルタルやセメントミルク等の
シール材を充填して閉塞していた。そのため、周辺地盤
に対して追随性及び変形性の小さいシール材は、地盤が
比較的柔らかい場合、又は地震や地滑り等が発生した場
合、及びシール材にその他の外力が集中した場合には壊
れてしまうという問題があった。After the geological survey and other various measurements, the borehole was filled with a sealing material such as mortar or cement milk in the same manner as described above. Therefore, the sealing material that is less responsive and deformable to the surrounding ground may break when the ground is relatively soft, when an earthquake or landslide occurs, or when other external force concentrates on the sealing material. There was a problem that it would.
本発明は上記問題点に鑑みてなされたものであり、そ
の目的はシール効果が高く、かつ追随性、変形及び膨張
性に優れた孔用充填材及び遮水部材を提供することであ
る。The present invention has been made in view of the above problems, and an object of the present invention is to provide a hole filling material and a water blocking member having a high sealing effect, and excellent in followability, deformation and expansion.
（課題を達成するための手段） 以上の課題を達成するための、孔用充填材は、地中に
掘削された孔中に充填されて該孔を閉塞するために用い
られる孔用充填材であって、重量比で20〜40％の粘土
と、40〜60％の水と、10〜30％のウレタン樹脂とを混合
して、変形係数が1kgf/cm2以下の高弾性となることを特
徴とする。(Means for Achieving the Object) In order to achieve the above object, a hole filler is a hole filler that is used to fill a hole excavated in the ground and close the hole. By mixing 20 to 40% clay by weight, 40 to 60% water and 10 to 30% urethane resin, it is possible to obtain a high elasticity with a deformation coefficient of 1 kgf / cm 2 or less. Features.
また、遮水部材は、地中に掘削された孔に予め設置さ
れた遮水パッカーに、重量比で20〜40％の粘土と、40〜
60％の水と、10〜30％のウレタン樹脂とを混合して、変
形係数が1kgf/cm2以下の高弾性となった孔用充填材が充
填されてなることを特徴とする。In addition, the water-impervious member is provided with a water-impervious packer previously installed in a hole excavated in the ground, clay of 20 to 40% by weight,
It is characterized in that 60% of water and 10 to 30% of urethane resin are mixed and filled with a highly elastic pore filler having a deformation coefficient of 1 kgf / cm 2 or less.
さらに、遮水部材は、地中に掘削された孔に適宜間隔
部をもって予め設置された遮水パッカーに、重量比で20
〜40％の粘土と、40〜60％の水と、10〜30％のウレタン
樹脂とを混合して、変形係数が1kgf/cm2以下の高弾性と
なった孔用充填材が充填されてなることを特徴とする。In addition, the water-impervious member is attached to a water-impervious packer, which has been installed in advance in a hole excavated in the ground with an appropriate interval, by a weight ratio of 20%.
And 40% of clay, and 40% to 60% of water, by mixing 10 to 30% of the urethane resin, deformation coefficient is 1 kgf / cm 2 or less of a high elasticity and became hole filler is filled It is characterized by becoming.
（作用） 上記構成によれば、ボーリング孔内等に充填された孔
用充填材は、時間の経過とともに高弾性を有するゲル状
に膨張硬化することにより、周辺地盤の変形に対応して
変形するので壊れることがない。(Operation) According to the above configuration, the hole filler filled in the bore hole or the like expands and hardens into a gel having high elasticity with the passage of time, and is deformed corresponding to the deformation of the surrounding ground. So it won't break.
また、孔用充填材とボーリング孔壁との間に、何らか
の原因で空隙が生じた場合でも、孔用充填材が周囲の水
を吸収して再び膨張するのでシール効果を高めることが
できる。Further, even when a gap is formed between the hole filling material and the bore hole wall for some reason, the hole filling material absorbs surrounding water and expands again, so that the sealing effect can be enhanced.
また、高弾性で、変形性及び膨張性に富んだ孔用充填
材が遮水パッカーに充填されたことにより、遮水効果を
高めることができる。In addition, the water-blocking effect can be enhanced by filling the water-blocking packer with a highly elastic, deformable and expandable hole filler.
さらに、高弾性で、変形性及び膨張性に富んだ孔用充
填材が充填された遮水パッカーが孔内に適宜間隙部をも
って設置されたことにより、前記孔を独立した複数の間
隙部に区画でき、これらの各間隙部相互への地下水の流
出入が完璧に防げる。In addition, the water-impervious packer filled with a highly elastic, deformable and expandable hole filling material is provided with an appropriate gap in the hole, thereby dividing the hole into a plurality of independent gaps. It is possible to completely prevent groundwater from flowing into and out of each of these gaps.
（実施例） 以下、本発明の一実施例を図面に基づいて詳細に説明
する。Hereinafter, an embodiment of the present invention will be described in detail with reference to the drawings.
第１図は本発明の孔用充填材１を、水圧測定用のボー
リング孔Ｈに使用した場合を示す断面図であり、該孔用
充填材１は粘土（建設材料として通常市販されているも
の）と水と親水性ウレタン樹脂とを、20〜40％:40〜60
％:10〜30％の割合で混合したものが使用され、本実施
例においては粘土と水と親水性ウレタン樹脂とを、夫々
30％:49％:21％の割合で混合したものが、注入装置Ｐに
より注入チューブ５を介してボーリング孔Ｈに注入され
ている。FIG. 1 is a cross-sectional view showing a case where the hole filling material 1 of the present invention is used for a boring hole H for measuring water pressure. The hole filling material 1 is made of clay (a commercially available material as a construction material). ), Water and hydrophilic urethane resin, 20-40%: 40-60
%: A mixture of 10 to 30% is used. In the present embodiment, clay, water, and a hydrophilic urethane resin are used, respectively.
A mixture of 30%: 49%: 21% is injected into the borehole H through the injection tube 5 by the injection device P.
ボーリング孔Ｈ内に充填された孔用充填材１は、時間
の経過とともに高弾性を有するゲル状に硬化してボーリ
ング孔Ｈ内を閉塞する。The hole filler 1 filled in the borehole H hardens into a highly elastic gel with the passage of time and closes the borehole H.
第２図は孔用充填材１を、間隙水圧の測定装置Ａにお
ける遮水用パッカー３に充填した遮水部材であり、図中
２はシール材、４は水圧計、６は測定管を夫々示す。FIG. 2 shows a water-blocking member in which a hole-filling material 1 is filled in a water-blocking packer 3 in a pore water pressure measuring device A, in which 2 is a sealing material, 4 is a water pressure gauge, and 6 is a measuring pipe. Show.
この場合も前記と同様に、孔用充填材１を液体状のま
まで各遮水用パッカー３に注入すると、各遮水用パッカ
ー３が膨張してボーリング孔壁Haに密着するので、各測
定深度層ｎ相互への地下水の流出入を防止する。In this case as well, when the hole filling material 1 is poured in a liquid state into each of the water-blocking packers 3 as described above, each of the water-blocking packers 3 expands and comes into close contact with the boring hole wall Ha. Prevents groundwater from flowing into and out of the depth layer n.
第３図及び第４図は本実施例で使用した孔用充填材、
即ち粘土を3.81kg、水を6.23、親水性ウレタン樹脂を
2.67kgの割合で混合した、孔用充填材１の変形性及び膨
張性を示したものであり、変形性については既存のシー
ル材と比較しても非常に優れており、また膨張率につい
ても非常に優れていることがわかる。3 and 4 show the hole filler used in the present embodiment,
That is, 3.81 kg of clay, 6.23 of water, and hydrophilic urethane resin
It shows the deformability and swelling properties of the filler for holes 1 mixed at a ratio of 2.67 kg. The swelling properties are much better than those of existing sealing materials. It turns out that it is very excellent.
第５図は孔用充填材１と鋼材との付着応力と、変形量
とを示したもので、水と親水性ウレタン樹脂の比率を変
えずに全体重量に対する粘土の割合を、30％、20％、10
％と変化させた結果である。FIG. 5 shows the adhesion stress between the filler 1 for the hole and the steel material and the deformation amount. The ratio of the clay to the total weight was changed to 30% and 20% without changing the ratio of the water and the hydrophilic urethane resin. %,Ten
%.
これによると粘土を加えることにより付着強度が増加
し、破断までの変形性能も増大している。According to this, the addition of clay increases the bonding strength and the deformation performance up to fracture.
したがって、本発明の以下の効果を確認することがで
きた。Therefore, the following effects of the present invention could be confirmed.
（発明の効果） 本発明は以上の様な構成にしたことにより下記の効果
を有する。(Effects of the Invention) The present invention has the following effects due to the above configuration.
孔用充填材は追随性、変形性及び膨張性に富み、ま
た地震や地滑り等により地盤が変形した場合は、その変
形に伴って変形するので壊れることがなく、さらに例え
何らかの原因で空隙が発生した場合でも、周囲の水を吸
収して再び膨張することによりシール効果を高めことが
できる。The filling material for holes is rich in followability, deformability and expansibility, and when the ground is deformed due to earthquake or landslide, it is deformed with the deformation, so it does not break, and even if some kind of voids are generated Even in this case, the sealing effect can be enhanced by absorbing surrounding water and expanding again.
高弾性で、変形性及び膨張性に富んだ孔用充填材が
遮水パッカーに充填されたことにより、遮水効果を高め
ることができる。The water blocking effect can be enhanced by filling the water blocking packer with the highly elastic, deformable and expandable hole filler.
また、高弾性で、変形性及び膨張性に富んだ孔用充填
材が充填された遮水パッカーが、孔内に適宜間隙部をも
って設置されたことにより、前記孔を独立した複数の間
隙部を区画でき、これらの各間隙部相互への地下水の流
出入が完璧に防げる。In addition, the water-impervious packer filled with a highly elastic, deformable and expandable filler for holes is provided with appropriate gaps in the holes, so that a plurality of gaps independent of the holes can be formed. It is possible to completely separate the groundwater from flowing into and out of each of these gaps.
第１図及び第２図は本発明の孔用充填材を間隙水圧の測
定に使用した状態の断面図、第３図は孔用充填材の変形
性を示した応力ひずみ関係図、第４図は孔用充填材の膨
張性を示した経時変化図、第５図は孔用充填材と鋼材と
の付着応力と変形量との関係を示した関係図、第６図は
従来の孔用充填材を間隙水圧の測定に使用した状態の断
面図である。 図中、 1:孔用充填材1 and 2 are cross-sectional views showing a state in which the pore filler of the present invention is used for measuring pore water pressure, FIG. 3 is a stress-strain relationship diagram showing the deformability of the pore filler, and FIG. FIG. 5 is a time-dependent change diagram showing the expandability of the hole filling material, FIG. 5 is a relationship diagram showing the relationship between the adhesion stress and the deformation amount of the hole filling material and the steel material, and FIG. It is sectional drawing of the state which used the material for the measurement of the pore water pressure. In the figure, 1: Filler for holes
───────────────────────────────────────────────────── フロントページの続き (72)発明者 梅田 宏 東京都中央区京橋１―７―１ 戸田建設 株式会社内 (72)発明者 関根 一郎 東京都中央区京橋１―７―１ 戸田建設 株式会社内 (72)発明者 野々目 洋 東京都中央区京橋１―７―１ 戸田建設 株式会社内 (72)発明者 原 敏明 東京都中央区京橋１―７―１ 戸田建設 株式会社内 (56)参考文献 特開 平１−299993（ＪＰ，Ａ) 特開 昭51−39912（ＪＰ，Ａ) 特公 昭50−39324（ＪＰ，Ｂ２) ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Hiroshi Umeda 1-7-1 Kyobashi, Chuo-ku, Tokyo Toda Construction Co., Ltd. (72) Inventor Ichiro Sekine 1-1-7-1 Kyobashi, Chuo-ku, Tokyo Toda Construction Co., Ltd. (72) Inventor Hiroshi Nonome 1-7-1 Kyobashi, Chuo-ku, Tokyo Toda Construction Co., Ltd. (72) Inventor Toshiaki Hara 1-1-7-1 Kyobashi, Chuo-ku, Tokyo Toda Construction Co., Ltd. (56) References JP-A-1-299999 (JP, A) JP-A-51-39912 (JP, A) JP-B-50-39324 (JP, B2)
Claims (3)
閉塞するために用いられる孔用充填材であって、重量比
で20〜40％の粘土と、40〜60％の水と、10〜30％のウレ
タン樹脂とを混合して、変形係数が1kgf/cm2以下の高弾
性となることを特徴とする孔用充填材。1. A hole filler filled in a hole excavated in the ground and used for closing the hole, comprising 20-40% by weight of clay and 40-60% by weight. A pore filler characterized by having a high elasticity with a deformation coefficient of 1 kgf / cm 2 or less by mixing water and 10 to 30% of a urethane resin.
パッカーに、重量比で20〜40％の粘土と、40〜60％の水
と、10〜30％のウレタン樹脂とを混合して、変形係数が
1kgf/cm2以下の高弾性となった孔用充填材が充填されて
なることを特徴とする遮水部材。2. A water-impervious packer previously installed in a hole drilled in the ground is provided with 20 to 40% by weight of clay, 40 to 60% of water, and 10 to 30% of urethane resin. Mixing, the deformation coefficient
A water-blocking member characterized by being filled with a highly elastic hole filler of 1 kgf / cm 2 or less.
め設置された遮水パッカーに、重量比で20〜40％の粘土
と、40〜60％の水と、10〜30％のウレタン樹脂とを混合
して、変形係数が1kgf/cm2以下の高弾性となった孔用充
填材が充填されてなることを特徴とする遮水部材。3. A water-impervious packer, which is pre-installed at appropriate intervals in a hole excavated in the ground, comprises 20 to 40% by weight of clay, 40 to 60% of water, and 10 to 30% of urethane. A water-blocking member characterized by being filled with a highly elastic hole filler having a deformation coefficient of 1 kgf / cm 2 or less by mixing with a resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2076990A JP2655737B2 (en) | 1990-03-28 | 1990-03-28 | Filler for holes and impermeable material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2076990A JP2655737B2 (en) | 1990-03-28 | 1990-03-28 | Filler for holes and impermeable material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH03279592A JPH03279592A (en) | 1991-12-10 |
| JP2655737B2 true JP2655737B2 (en) | 1997-09-24 |
Family
ID=13621217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2076990A Expired - Lifetime JP2655737B2 (en) | 1990-03-28 | 1990-03-28 | Filler for holes and impermeable material |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2655737B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2018267548B2 (en) * | 2017-11-23 | 2024-02-29 | Earth Technics Pty Ltd | A method and system for borehole fracture zone sealing for drilling circulation mud loss control |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103195045B (en) * | 2013-03-25 | 2016-02-03 | 长沙理工大学 | An a kind of hole concrete dynamic modulus WG embedded device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5644032B2 (en) * | 1973-08-13 | 1981-10-16 | ||
| RO80835A (en) * | 1974-07-26 | 1984-06-21 | Bergweksverband Gmbh Essen,De | METHOD FOR CONSOLIDATION OF BEOLOGICAL FORMATION |
| JPH01299993A (en) * | 1988-05-27 | 1989-12-04 | Toho Chem Ind Co Ltd | Closing method for mud escape part |
-
1990
- 1990-03-28 JP JP2076990A patent/JP2655737B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2018267548B2 (en) * | 2017-11-23 | 2024-02-29 | Earth Technics Pty Ltd | A method and system for borehole fracture zone sealing for drilling circulation mud loss control |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH03279592A (en) | 1991-12-10 |
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| EXPY | Cancellation because of completion of term |