JPS6117970B2 - - Google Patents
Info
- Publication number
- JPS6117970B2 JPS6117970B2 JP54048812A JP4881279A JPS6117970B2 JP S6117970 B2 JPS6117970 B2 JP S6117970B2 JP 54048812 A JP54048812 A JP 54048812A JP 4881279 A JP4881279 A JP 4881279A JP S6117970 B2 JPS6117970 B2 JP S6117970B2
- Authority
- JP
- Japan
- Prior art keywords
- injection
- ground
- time
- tube
- injected
- 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
Links
- 238000002347 injection Methods 0.000 claims description 179
- 239000007924 injection Substances 0.000 claims description 179
- 239000000463 material Substances 0.000 claims description 107
- 238000007596 consolidation process Methods 0.000 claims description 27
- 238000007711 solidification Methods 0.000 claims description 25
- 230000008023 solidification Effects 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 22
- 239000000376 reactant Substances 0.000 claims description 15
- 230000000694 effects Effects 0.000 claims description 10
- 239000000243 solution Substances 0.000 claims description 7
- 239000000945 filler Substances 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 150000001875 compounds Chemical class 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 3
- 239000011800 void material Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 description 32
- 235000019353 potassium silicate Nutrition 0.000 description 24
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 24
- 239000011440 grout Substances 0.000 description 19
- 239000000203 mixture Substances 0.000 description 18
- 239000002689 soil Substances 0.000 description 11
- 239000004568 cement Substances 0.000 description 9
- 239000003795 chemical substances by application Substances 0.000 description 8
- 239000000499 gel Substances 0.000 description 5
- 238000001879 gelation Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- -1 etc.) Substances 0.000 description 3
- 108010025899 gelatin film Proteins 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 3
- 235000012239 silicon dioxide Nutrition 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- ZHNUHDYFZUAESO-UHFFFAOYSA-N Formamide Chemical compound NC=O ZHNUHDYFZUAESO-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 150000007513 acids Chemical class 0.000 description 2
- 229910052783 alkali metal Inorganic materials 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- LEQAOMBKQFMDFZ-UHFFFAOYSA-N glyoxal Chemical compound O=CC=O LEQAOMBKQFMDFZ-UHFFFAOYSA-N 0.000 description 2
- 238000001802 infusion Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 230000008674 spewing Effects 0.000 description 2
- URAYPUMNDPQOKB-UHFFFAOYSA-N triacetin Chemical compound CC(=O)OCC(OC(C)=O)COC(C)=O URAYPUMNDPQOKB-UHFFFAOYSA-N 0.000 description 2
- 210000003462 vein Anatomy 0.000 description 2
- QTBSBXVTEAMEQO-UHFFFAOYSA-M Acetate Chemical compound CC([O-])=O QTBSBXVTEAMEQO-UHFFFAOYSA-M 0.000 description 1
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-M Bicarbonate Chemical compound OC([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-M 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- JOYRKODLDBILNP-UHFFFAOYSA-N Ethyl urethane Chemical compound CCOC(N)=O JOYRKODLDBILNP-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 1
- KDXKERNSBIXSRK-UHFFFAOYSA-N Lysine Natural products NCCCCC(N)C(O)=O KDXKERNSBIXSRK-UHFFFAOYSA-N 0.000 description 1
- 239000004472 Lysine Substances 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 150000001299 aldehydes Chemical class 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 239000011400 blast furnace cement Substances 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 150000002148 esters Chemical class 0.000 description 1
- 239000003349 gelling agent Substances 0.000 description 1
- 239000001087 glyceryl triacetate Substances 0.000 description 1
- 235000013773 glyceryl triacetate Nutrition 0.000 description 1
- 229940015043 glyoxal Drugs 0.000 description 1
- 159000000011 group IA salts Chemical class 0.000 description 1
- QAOWNCQODCNURD-UHFFFAOYSA-M hydrogensulfate Chemical compound OS([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-M 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- 235000012245 magnesium oxide Nutrition 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- 239000012985 polymerization agent Substances 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 229920003002 synthetic resin Polymers 0.000 description 1
- 239000000057 synthetic resin Substances 0.000 description 1
- 229960002622 triacetin Drugs 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/12—Consolidating by placing solidifying or pore-filling substances in the soil
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Description
本発明は軟弱地盤の固結法に関し、詳細には、
軟弱あるいは漏水地盤を均質に、しかも強固に固
結あるいは止水する地盤固定法に関する。
軟弱地盤は通常、粗粒土層と細粒土層とが互層
になつて形成された軟弱な地盤であるが、これは
該地盤内に固結剤を注入して均質に固結すること
が必要である。
最近の建設工事における環境保全、水質保全の
問題から、注入した水ガラスグラウトが注入範囲
外へ逸脱することなく、注入した地点で確実に固
結する事が公害防止の点から望まれている。
本発明は多重管からなる注入管を地盤中に挿入
し、これを通して異なる固結時間を有する複数の
注入材を注入するものであつて、まず、固結時間
の短い方の注入材で注入管と地盤との間隙を填充
する事によりパツカー効果のある膜を形成すると
共に、粗い層や層の境界面を填充した脈状を主体
とする固結層を形成してのち固結時間の長い方の
注入材を上記膜を破つて固結時間の短い方の注入
材がすでに注入してある領域に注入するものであ
る。固結時間の長い方の注入材は注入管周囲や粗
い層から逸脱する事はないので注入対象領域を確
実に浸透して固結する事が可能である。
詳述すれば、本発明は地盤中に内管および外管
を含む多重管を挿入し、この多重管を移動して注
入ステージを変化させながら前記多重管内の複数
の管路を通して、固結時間の異なる複数の注入材
を注入する複合注入工法において、
(A) 前記内管の先端が外管のそれよりも短く形成
されて該多重管先端部が混合室となつており、
固結時間の異なる複数の注入材のうち、固結時
間の短い方の注入材は固結時間が30秒以内であ
つて、主剤配合液と反応剤配合液とを上記多重
管内の複数の管路を通して送液して前記混合室
で合流して形成され、そして該多重管の外管下
部吐出口より地盤に注入され、
(B) 固結時間の長い方の注入材は前記外管下部吐
出口より注入され、かつ固結時間の短い方の注
入材と固結時間の長い方の注入材の注入を切り
かえながら注入することにより、これら複数の
注入材を注入する時期をずらして地盤に注入
し、
(C) 前記固結時間の短い方の注入材は注入深度１
ｍ当たり１以上の注入量であつて注入管まわ
りの空隙にパツカー効果を有する填充物を形成
すると共に逸脱しやすい部分を填充し、かつ固
結時間の長い方の注入材は固結時間の短い方の
注入材が注入された領域に前記填充物をやぶつ
て浸透せしめることを特徴とする地盤注入工法
に係わるものである。
更に詳述すると、まず多重管を地盤中の所定位
置に設置したのち、多重管の先端部にて固結時間
の短い方の注入材を注入して注入管まわりの空隙
を填充して、パツカー効果を有するシールを形成
してのち、固結時間の長い方の注入材を注入して
最下部のステージの注入を完了する。次に所定の
位置まで該多重管を引上げてから固結時間の短い
方の注入材を注入して多重管を移動した事によつ
て生じた管まわりの空隙とその周辺の粗い層を填
充してのち、固結時間の長い方の注入材を浸透さ
せる。以下同じようにしてステージを上昇させな
がら注入をくり返す。
以上述べたパツカー効果を有する膜を形成しう
る固結時間の短い方の注入材と土粒子間に浸透し
うる固結時間の長い方の注入材を地盤中の同一領
域に注入する事は多重管を用いる事によつて効果
的に可能になる。
すなわち、円管管路の内管壁、外管壁によつて
形成される管路を用いる事によつて異なる固結時
間を有する注入材を効果的に組み合わせて地盤中
に複合注入を行う事が出来る。この場合固結時間
の短い方の注入材および固結時間の長い方の注入
材の組み合わせは固結時間の長い方の注入材およ
び急結性反応剤をそれぞれ管路を通して送液し、
或は主材配合液および反応剤配合液をそれぞれ管
路を通して送液し多重管先端部で合流して固結時
間の短い方の注入材を形成して注入してのち、固
結時間の長い方の注入材を上記管路のいずれかを
通して注入してもよいし、或は固結時間の長い方
の注入材を構成する成分をそれぞれの管路を通し
て送液し、先端部で合流させて注入する方法を用
いる事が出来る。
以上において多重管内の複数の管路の地上部に
はＹ字管を連結して、各注入材を構成する成分を
合流させる事が出来るし、又Ｙ字管に装着した切
換コツクや注入ポンプの作動を調節して上記注入
材の注入の中断、継続、合流や或は注入材を構成
する成分の合流、中断等を行う事が出来る。
このように本発明における異なる固結時間の注
入の切り換えは第１図にも示すようにコントロー
ル弁やポンプからなる組み合わせ調整装置を作動
してこれらの注入材の注入する時期をずらして、
これらの注入材を重ね合わせて注入する事が出来
る。
軟弱地盤の固結法として、従来、次の方法が公
知である。
(1) ロツド注入工法
この方法は固結剤として反応剤の水溶液ある
いはセメント物質を含む懸濁液（Ａ液）と、水
ガラス水溶液（Ｂ液）とを用い、これらをＹ字
管を用いて合流させながら地盤中に圧入する方
法であるがボーリングロツドと地盤との間にす
き間が生じ、このすき間から固結剤が地表面に
噴出したり、又粗い層を通して注入液が逸脱し
てしまうため、細粒土層部分への固結や所定範
囲の固結が困難である。
(2) 二重管注入工法
これはＡ液として水ガラスをＢ液としてゲル
化反応剤を用いて地盤中に設置された二重管の
先端部で合流して短いゲル化時間で固結する配
合のグラウトを注入する方法である。
これによればゲル化時間が短いためロツド周
辺にそつてグラウトが地上部に噴出するのは防
止出来るがゲル化時間が短いため粗い層を脈状
にしか固結しえず土粒子間に浸透させる事は出
来ない。このため掘削に当つて湧水土砂の崩壊
が生じやすい。
本発明はこのような複雑な粗粒土層および細粒
土層をくまなく固結して全体的に一体化された、
均質で、止水の完全な、しかも高強度な固結地盤
を形成する軟弱地盤の固結法を提供することにあ
り、従来用いられてきた上記方法の欠点を解決し
たものである。
本発明は以下の手法を用いる事によつて従来の
注入工法では得られない効果を上げえた。
(1) 固結時間の異なる注入材を複数組み合わせる
事。
注入材としては以下の例をあげる事が出来
る。
セメントや粘土を有効成分とする懸濁型グ
ラウト或は更に急結剤を加えたグラウト
セメント・水ガラスグラウト或は粘土・水
ガラスグラウトのように懸濁物を含みかつ液
全体がゲル化するグラウト
水ガラスと反応剤を含む水ガラスグラウト
合成樹脂と反応剤を含んで一定の時間後に
重合する樹脂系グラウト
固結時間の異なる注入材のうち固結時間の短
い方の注入材として30秒以内注入材の適用は注
入管と地盤の間の空隙に効果的なゲルの膜をつ
くつてパツカー効果を有する膜状のシールを形
成するために特に効果的である。
これによつてその後に長い固結時間の注入液
を注入する場合注入液が注入管をつたわつて地
上部に噴出するのを防ぐ事が出来るのみならず
注入液の吐出口の位置のゲルの膜が破れて長い
固結時間の注入液がそのステージの部分の土層
に浸透する事が出来る。
しかも30秒以内のゲル化時間の配合液はロツ
ド注入におけるロツド上端部のＹ字管から合流
した場合はロツド中につまつてしまう注入不能
になりがちであるが本発明における多重管を用
いてその先端部で合流すればこのように固結時
間の短いグラウトの適用が可能である。
この注入材の固結時間が１分以上になると注
入材は注入管周辺から地上部に噴出してしまい
密実なゲル膜のシールを注入管囲りにつくる事
が困難になるし、又つづけて固結時間の長い注
入材を注入するとパツカー効果が不充分なため
注入管周りから地表面に噴出したりロツド注入
の場合と同じくロツド周辺にそつて不特定に注
入液が拡がり、所定のステージのみを密実に注
入する事が困難になりがちである。
しかしあらかじめ30秒以内の注入材を所定量
注入後は１分以上の注入材を注入しても逸脱す
る事なく地盤中に注入出来る。
なお上記において固結時間の短い方の注入材
の注入量は注入深長１ｍ当り１以上の注入が
必要である。
１以下の場合注入管まわりにパツカー効果
を有するシールを形成する事が不可能になる。
注入管まわりのパツカー効果と注入管設置の際
の注入管まわりの地盤のゆるみ部分を填充する
ためには通常は注入深長１ｍ当り５以上の注
入量が望ましい。
なお、上記において水ガラスと反応剤を含む
水ガラスグラウトとしては、反応剤として例え
ばエステル類（エチルアセテート、エチレンゴ
ールアセテート、トリアセチン、エチレンカー
ボネート等）、アルデヒド類（グリオキザール
等）、アミド類（フオルムアマイド等）、酸類
（リン酸、硫酸等）、塩類（重炭酸塩、重硫酸
塩、リン酸塩等）炭酸ガス等任意の反応剤を用
いたアルカリ性、中性、酸性領域でゲル化する
水ガラスグラウトを用いる事が出来る。
又酸性反応剤水溶液中に水ガラスを加えて得
られたそれ自体ゲル化しうるゲル化時間の長い
酸性領域の配合液に水ガラス、アルカリ（炭酸
ソーダ、重炭酸ソーダー、苛性ソーダ、酸化マ
グネシウムその他アルカリ性塩等）、セメント
（ポルトランドセメント、高炉セメント、アル
ミナセメント等）、石灰等のうちの少なくとも
一種を合流させて短いゲル化時間を有するグラ
ウトを得る事が出来る。このようなグラウトは
本発明において非常に効果的である。
又樹脂系グラウトとしてはアクリル系、尿素
系、リジニン系グラウトのように重合反応剤を
加える事によつて重合するもの、或はウレタン
系グラウトのように水と反応して固化するもの
等任意のものを用いる事が出来る。
ただし、上記において、固結時間の短い方の
注入材を形成するためには主材配合液に反応剤
を合流するものとする。又上記において主材配
合液とは水ガラス配合液或いは水ガラスと反応
剤の混合配合液、セメント懸濁液のようにそれ
自体固結する配合液を云う。
水ガラスとしてはモル比（SiO2／M2O）：
1.5〜5.0液状水ガラス、無水水ガラス、和水水
ガラス、結晶性水ガラス等を含めた任意のモル
比の珪酸のアルカリ金属塩、或は珪酸のアルカ
リ金属塩と珪酸の混合物をいう。
(2) 固結時間の異なる複数の注入材は多重管から
なる注入管中の流路をそれぞれ通過して地盤中
に注入する事。
この場合それぞれの注入材は多重管に入いる
前に形成されても、或は注入材を構成する成分
がそれぞれ注入管中の流路を通つて注入管先端
部或は注入管先端部から地盤中に吐出されてか
ら合流されて所定のグラウトが形成されてもよ
い。
ここで多重管とは二重管、三重管或は管の中
にいくつかの管が並列で入つたもの等を云う。
また注入材の地盤中への吐出口は注入管先端
部または外管側壁面に開口しているが固結時間
の短い方の注入材も、固結時間の長い方の注入
材もいずれも同一の吐出口から注入される。
(3) 注入に当つては固結時間の短い方の注入材で
注入管と地盤への間隙にパツカー効果のある填
充物を形成すると同時に固結時間の長い注入材
が逸脱しやすい地盤の間隙を填充してのち固結
時間の長い注入材を上記填充物を破つて、固結
時間の短い注入材を注入した領域に注入する
事。このために、固結時間の異なる複数の注入
材の注入を切り換えながら注入する事によりこ
れらの注入材を注入する時期をずらせて注入す
る。
ここで、固結時間の異なる複数の注入材を注
入する時期をずらすとはこれらの固結時間の異
なる複数の注入材を同時に注入しないという意
味である。
或は内管と外管の間から固結時間の長い方の
注入材を吐出し同時に内管から固結時間の長い
方の注入材をを急結させる急結性材料を含む配
合液を合流させた急結性注入材を注入したのち
内管から急結性材料の吐出を中断して、固結時
間の長い方の注入材の注入に切り換える。
なお、上記において固結時間の異なる複数の注
入材の注入をそれぞれ注入ステージジをかえなが
ら注入してもよい。いずれにせよ注入深度１ｍ当
り１以上好ましくは５以上の固結時間の短い
方の注入材の注入を行う事によつて注入管まわり
の空隙や周辺地盤の逸脱しやすい部分が填充され
るため、その後固結時間の長い方の注入材が固結
時間の短い方の注入材の浸透しきれなかつた部分
に浸透し両者が重ねあつて注入されるようにな
る。
上記において、固結時間の異なる複数の注入材
の組み合せは
水ガラス配合液反応剤配合液水ガラスと
反応剤の混合配合液から選ばれた２つ以上の配合
液を用いて組み合わされ、該注入液の注入に当つ
ては上記複数の配合液を少なくとも１つの組み合
わせ調整装置を介して多重管に送液し、該組み合
わせ調整装置を作動して固結時間の短い方の注入
材の注入と固結時間の長い方の注入材の注入の切
り換えを行つて注入出来る。
例えば第１図に示すように水ガラス配合液と
水ガラスと反応して固結時間の短い方の注入材
を形成する反応剤配合液と水ガラスと反応して
固結時間の長い方の注入材を形成する反応剤配合
液をそれぞれ供給する。供給管を２つの管路を内
在する二重管に少なくとも１つの組み合わせ調整
装置を介在して連結せしめ、この組み合わせ装置
調整装置を作動して上記固結時間の短い方の注入
材と固結時間の長い方の注入材の注入の切り換え
をおこなう事が出来る。
上記において組み合わせ調整装置は注入ポンプ
或いはコントロール弁である。
第１図は本発明を実施する注入装置の例を示す
ものであつてこれにより異なつた固結時間を有す
る注入材を地盤状況、注入状況に応じて自動的に
組み合わせて地盤注入を行う事が可能になる。
更に詳細に説明すれば複数のグラウトを組合わ
せて地盤に注入するに際し、地盤への注入状況を
注入圧力計５流量計６あるいは注入深度計７′等
の測定器を用いて測定しこの測定によつて得られ
た情報を該測定器からシーケンス回路を内在した
コントローラ８を経て注入ポンプ２あるいはコン
トロール弁１４等の組み合わせ調整装置に伝達
し、該組み合わせ調整装置では該コントローラー
８からの指令を受けて該グラウト素材を任意の形
態で組み合わせ地盤の注入状況に応じて自動的に
組み合わせる事が出来る。
上記においてコントローラー８は深度計７′よ
り得られた情報に基ずいて昇降機７に指令して注
入管を所定の深度に移動して所定量の固結時間の
短い方の注入材を注入後所定量の固結時間の長い
方の注入材を注入してそのステージの注入を完了
し、更に次のステージに自動的に作動する指示を
与える事が出来るし、又配合液製造装置に指示し
て任意の配合液を製造せしめる事が出来る。
又このような装置によればあらかじめ調査によ
つて得られた情報に基ずき各深度における固結時
間の短い方の注入材と固結時間の長い方の注入材
の注入量の比率を設定しておく事によりコントロ
ーラーの指示に基づき自動的に所定の注入を行う
事が出来る。
以上の手法を用いることにより、まず固結時間
の短い方の注入材を地盤中に注入すれば、地盤中
の粗い空隙はもちろんのこと、注入管と地盤との
すき間も、固結時間の短い方の注入材の固結体で
填充され、次いでその領域に固結時間の長い方の
注入材を注入すれば、該空隙あるいはすき間はす
でに固結時間の短い方の注入材で填充固結されて
いるので、固結時間の長い方の注入材は地表面に
も空隙にも逃げることがなく、細粒土層に完全に
浸透する。所定量を注入の後、次いで注入管を適
当な高さに引き上げ、再び、前述の注入を行な
い、さらに注入管を引き上げながら前述の注入操
作を何回も繰り返えせば、極めて容易に、しかも
完全に本発明方法を実施できる。
実施例 １
第１図に示す方法に用いて、砂礫層と粗砂層か
らなる地盤に二重管をGL−10の深度迄設置して
以下の配合よりなるＩ液（外管を通す）、液
（内管を通す）を同量ずつ二重管先端部で合流し
て20注入後液の注入を中止し、液のみを
100注入して最下部のステージの注入を完了し
てのち二重管を0.5ｍ上げてから同様の工程をく
り返しGL−３ｍ迄注入した。
The present invention relates to a method for consolidating soft ground, and in particular,
This article relates to a ground fixing method that homogeneously and firmly consolidates or stops water in soft or leaky ground. Soft ground is usually formed by alternating layers of coarse-grained soil and fine-grained soil, but this cannot be uniformly consolidated by injecting a consolidation agent into the soil. is necessary. Due to the recent environmental conservation and water quality conservation issues in construction work, it is desired from the viewpoint of pollution prevention that the injected water glass grout solidify reliably at the point where it is injected without deviating from the injection area. The present invention involves inserting an injection pipe consisting of multiple pipes into the ground, and injecting a plurality of injection materials having different consolidation times through the injection pipe. It forms a film with a packer effect by filling the gap between the surface and the ground, and also forms a consolidated layer mainly consisting of veins that fills the interface between rough layers and layers. The injection material is injected into the region where the injection material with the shorter consolidation time has already been injected by breaking the membrane. The injection material that takes longer to solidify does not deviate from the area around the injection tube or from the rough layer, so it can reliably penetrate and solidify the injection target area. Specifically, the present invention inserts multiple pipes including an inner pipe and an outer pipe into the ground, moves the multiple pipes to change the injection stage, and passes through a plurality of pipes in the multiple pipes, thereby increasing the consolidation time. In a composite injection method in which a plurality of injection materials with different values are injected, (A) the tip of the inner tube is formed shorter than that of the outer tube, and the tip of the multiple tube serves as a mixing chamber;
Among multiple injection materials with different solidification times, the injection material with a shorter solidification time has a solidification time of 30 seconds or less, and the base compound solution and reactant compound solution are passed through multiple tubes in the multi-tube system. (B) The injection material with a longer solidification time is sent to the ground through the outlet at the bottom of the outer tube of the multi-layered tube. By injecting from the outlet and switching between the injection material with a shorter consolidation time and the injection material with a longer consolidation time, these multiple injection materials can be injected into the ground at different times. (C) The injection material with the shorter consolidation time has an injection depth of 1.
The injection amount is 1 or more per m, which forms a filler with a Packer effect in the void around the injection pipe, and fills the parts that are likely to deviate, and the injection material with a longer solidification time has a shorter solidification time. The present invention relates to a ground injection method characterized in that the filling material is broken and penetrated into the area into which the first injection material has been injected. To explain in more detail, first, multiple pipes are installed in a predetermined position in the ground, and then the injection material with a shorter consolidation time is injected at the tip of the multiple pipe to fill the void around the injection pipe. After forming an effective seal, the longer setting time injection material is injected to complete the lowermost stage injection. Next, the multiple tubes are pulled up to a predetermined position, and the injection material with the shorter setting time is injected to fill the voids around the tubes and the rough layer around them that were created by moving the multiple tubes. After that, the injection material with a longer setting time is allowed to penetrate. Repeat the injection while raising the stage in the same manner. As mentioned above, it is not possible to multiple times inject into the same area in the ground the injection material with a shorter consolidation time that can form a film with the Patzker effect and the injection material with a longer consolidation time that can penetrate between soil particles. This is effectively possible by using a tube. In other words, by using a pipe line formed by the inner and outer walls of a circular pipe line, it is possible to effectively combine injection materials with different consolidation times and perform composite injection into the ground. I can do it. In this case, for the combination of the injection material with a shorter setting time and the injection material with a longer setting time, the injection material with a longer setting time and a rapid setting reactant are respectively delivered through the conduit,
Alternatively, the main material compounded liquid and the reactant compounded liquid are sent through the pipes respectively, and are combined at the tip of the multi-tube to form the injection material with a shorter solidification time, and then injected, and then The injection material may be injected through either of the above conduits, or the components constituting the injection material with a longer setting time may be delivered through each conduit and merged at the tip. An injection method can be used. In the above, Y-shaped tubes can be connected to the aboveground parts of multiple conduits in a multi-pipe, and the components constituting each injection material can be merged. The operation can be adjusted to interrupt, continue, or merge the injection of the injection material, or to combine or interrupt the injection of the components constituting the injection material. In this way, in order to switch between injections with different solidification times in the present invention, as shown in FIG.
These injection materials can be superimposed and injected. The following methods are conventionally known as methods for consolidating soft ground. (1) Rod injection method This method uses an aqueous solution of a reactant or a suspension containing cement material (liquid A) as a solidifying agent, and an aqueous water glass solution (liquid B). This is a method of injecting into the ground while merging the rod, but a gap is created between the boring rod and the ground, and the cement can spray out onto the ground surface from this gap, or the injected liquid can escape through the rough layer. Therefore, it is difficult to consolidate into fine-grained soil layers or within a specified range. (2) Double pipe injection method This uses water glass as the A liquid and a gelling agent as the B liquid to join together at the tip of the double pipe installed in the ground and solidify in a short gelation time. This is a method of injecting a blended grout. According to this method, because the gelation time is short, it is possible to prevent the grout from spewing out above the ground around the rod, but because the gelation time is short, it can only solidify the coarse layer in veins and penetrate between the soil particles. I can't do it. For this reason, during excavation, the spring water soil is likely to collapse. The present invention consolidates these complex coarse-grained soil layers and fine-grained soil layers into an integrated whole.
The object of the present invention is to provide a method for consolidating soft ground that forms a homogeneous, watertight, and highly strong consolidated ground, which solves the drawbacks of the above-mentioned conventional methods. By using the following method, the present invention has been able to achieve effects that cannot be obtained with conventional injection methods. (1) Combining multiple injection materials with different setting times. Examples of injection materials include: Suspension type grout that contains cement or clay as an active ingredient, or grout that has an accelerating agent added to it.Grout that contains suspended matter and the entire liquid becomes a gel, such as cement/water glass grout or clay/water glass grout. Water glass grout containing water glass and a reactive agent Resin-based grout containing a synthetic resin and a reactive agent that polymerizes after a certain period of time Injection within 30 seconds as the injection material with the shorter setting time among injection materials with different setting times The application of the material is particularly effective for creating an effective gel film in the gap between the injection pipe and the ground to form a membranous seal with a Packer effect. This not only prevents the injection liquid from flowing through the injection pipe and spewing out above the ground when injection liquid with a long solidification time is subsequently injected, but also prevents the injection liquid from forming a gel film at the position of the injection liquid outlet. rupture, allowing the injected solution with a long consolidation time to penetrate into the soil layer at that stage. In addition, when a compounded liquid that gels within 30 seconds merges from the Y-shaped tube at the upper end of the rod during rod injection, it tends to clog in the rod and become impossible to inject. If they merge at the tip, it is possible to use grout with a short setting time. If the solidification time of this injection material exceeds 1 minute, the injection material will spray out from around the injection pipe to the above ground, making it difficult to create a tight seal of gel film around the injection pipe, and it will be difficult to continue. If a material that takes a long time to solidify is injected, the packer effect will be insufficient and the material will spray out from around the injection pipe onto the ground surface, or as in the case of rod injection, the material will spread unspecifiedly around the rod, and the material will not reach the specified stage. It tends to be difficult to inject the liquid accurately. However, if a predetermined amount of injection material is injected within 30 seconds in advance, even if the injection material is injected for more than 1 minute, it can be injected into the ground without deviation. In the above, the injection amount of the injection material with the shorter consolidation time is required to be one or more injections per 1 m of injection depth. If it is less than 1, it becomes impossible to form a seal having a Packer effect around the injection pipe.
In order to fill up the Packer effect around the injection pipe and the loosened part of the ground around the injection pipe when installing the injection pipe, it is usually desirable to have an injection rate of 5 or more per 1 m of injection depth. In addition, as the water glass grout containing water glass and a reactant in the above, examples of the reactant include esters (ethyl acetate, ethylene gol acetate, triacetin, ethylene carbonate, etc.), aldehydes (glyoxal, etc.), amides (formamide, etc.). ), acids (phosphoric acid, sulfuric acid, etc.), salts (bicarbonate, bisulfate, phosphate, etc.), water glass grout that gels in alkaline, neutral, and acidic regions using any reactive agent such as carbon dioxide gas. can be used. In addition, water glass, alkali (sodium carbonate, sodium bicarbonate, caustic soda, magnesium oxide, and other alkaline salts) are added to an acidic compound solution that can gel itself and has a long gelation time, which is obtained by adding water glass to an aqueous solution of an acidic reactant. etc.), cement (Portland cement, blast furnace cement, alumina cement, etc.), lime, etc. can be combined to obtain a grout having a short gelation time. Such grouts are very effective in the present invention. In addition, resin-based grouts include those that polymerize by adding a polymerization agent, such as acrylic, urea-based, and lysine-based grouts, or those that solidify by reacting with water, such as urethane-based grouts. I can use things. However, in the above, in order to form an injection material with a shorter solidification time, a reactant is added to the main material mixture. In the above, the main material mixture refers to a water glass mixture, a mixed mixture of water glass and a reactant, or a mixture that solidifies itself, such as a cement suspension. As water glass, molar ratio (SiO 2 /M 2 O):
1.5 to 5.0 Refers to an alkali metal salt of silicic acid in any molar ratio, including liquid water glass, anhydrous water glass, hydrous water glass, crystalline water glass, etc., or a mixture of an alkali metal salt of silicic acid and silicic acid. (2) Multiple injection materials with different consolidation times are injected into the ground by passing through channels in injection pipes made up of multiple pipes. In this case, each injection material may be formed before entering the multiple pipes, or the components constituting the injection material may pass through the channels in the injection pipes to the tip of the injection pipe or to the ground from the tip of the injection pipe. A predetermined grout may be formed by discharging the grout into the grout and then merging the grout. Here, multiple pipes refer to double pipes, triple pipes, or pipes in which several pipes are installed in parallel. In addition, the discharge port for the injection material into the ground is opened at the tip of the injection pipe or on the side wall of the outer pipe, but both the injection material with a shorter consolidation time and the injection material with a longer consolidation time are the same. is injected from the outlet. (3) When injecting, use the injection material that takes a shorter time to solidify to form a filler with a packing effect in the gap between the injection pipe and the ground, and at the same time fill the gap in the ground where the injection material that takes a longer time to solidify is likely to slip out. After filling, the filling material with a long setting time is broken and the filling material with a short setting time is injected into the area into which the filling material with a short setting time has been injected. For this purpose, a plurality of injection materials having different solidification times are injected while being switched, so that the timing of injection of these injection materials is staggered. Here, staggering the timing of injecting a plurality of injection materials having different setting times means not injecting a plurality of injection materials having different setting times at the same time. Alternatively, the injection material with a longer solidification time is discharged from between the inner tube and the outer tube, and at the same time, the mixture containing a quick-setting material that quickly solidifies the injection material with a longer solidification time is combined from the inner tube. After injecting the rapidly setting material, the injection of the rapidly setting material from the inner pipe is interrupted and the injection of the material having a longer setting time is switched to injection. In the above, a plurality of injection materials having different solidification times may be injected while changing the injection stage. In any case, by injecting the injection material with a shorter consolidation time of 1 or more, preferably 5 or more per 1 m of injection depth, the voids around the injection pipe and the parts of the surrounding ground that are likely to deviate can be filled. Thereafter, the injection material with a longer setting time permeates into the part where the injection material with a shorter setting time has not penetrated, and both are overlapped and injected. In the above, the combination of a plurality of injection materials having different solidification times is combined using two or more mixtures selected from a water glass mixture, a reactant mixture, and a mixed mixture of water glass and a reactant, and the injection When injecting the liquids, the above-mentioned plurality of blended liquids are sent to the multiple pipes through at least one combination adjustment device, and the combination adjustment device is operated to inject and solidify the injection material with the shortest solidification time. Injection can be performed by switching the injection of the injection material that takes longer time to set. For example, as shown in Figure 1, the water glass mixture reacts with the water glass to form the injection material with the shorter setting time, and the reactant mixture reacts with the water glass to form the injection material with the longer setting time. The reactant mixture liquids forming the materials are respectively supplied. The supply pipe is connected to the double pipe containing the two pipe lines through at least one combination adjustment device, and the combination adjustment device is operated to select the injection material having the shorter setting time and the setting time. It is possible to switch the injection of the longer injection material. In the above, the combination regulating device is an injection pump or a control valve. Fig. 1 shows an example of an injection device for carrying out the present invention, which enables injection into the ground by automatically combining injection materials having different consolidation times according to the ground conditions and injection conditions. It becomes possible. To explain in more detail, when a combination of multiple grouts is injected into the ground, the condition of the injection into the ground is measured using measuring instruments such as the injection pressure gauge 5 flow meter 6 or the injection depth gauge 7'. The information thus obtained is transmitted from the measuring instrument to a combination adjustment device such as the infusion pump 2 or control valve 14 via a controller 8 containing a sequence circuit, and the combination adjustment device receives commands from the controller 8. The grout materials can be combined in any form and automatically combined according to the ground injection situation. In the above, the controller 8 commands the elevator 7 based on the information obtained from the depth gauge 7' to move the injection tube to a predetermined depth and inject a predetermined amount of the injection material with a shorter solidification time. It is possible to inject a fixed amount of the injection material with a longer solidification time to complete the injection of that stage, and then give an instruction to automatically operate the next stage, or to give an instruction to the compounded liquid manufacturing equipment. Any combination liquid can be manufactured. Also, with such a device, the ratio of the injection amount of the injection material with a shorter consolidation time to the injection material with a longer consolidation time at each depth can be set based on information obtained in advance through a survey. By doing so, the specified injection can be performed automatically based on the instructions from the controller. By using the above method, if the injection material with a shorter consolidation time is injected into the ground first, not only the rough voids in the ground but also the gaps between the injection pipe and the ground can be filled with the material with a shorter consolidation time. If the area is filled with the solidified material of one of the injection materials and then the injection material with a longer setting time is injected into that area, the gap or gap is already filled and consolidated with the injection material with a shorter setting time. Therefore, the injection material with a longer consolidation time does not escape into the ground surface or into the voids, and completely penetrates into the fine-grained soil layer. After injecting a predetermined amount, the injection tube can be pulled up to an appropriate height, the injection described above can be performed again, and the injection operation described above can be repeated many times while pulling up the injection tube. The method of the invention can be carried out perfectly. Example 1 Using the method shown in Figure 1, a double pipe was installed in the ground consisting of a gravel layer and a coarse sand layer to a depth of GL-10, and liquid I (passed through the outer pipe) and liquid having the following composition were (passed through the inner tube) into the same amount at the tip of the double tube, and after 20 injections, the injection of the liquid was stopped and only the liquid was poured.
After 100 injections and completion of injection at the lowest stage, the double tube was raised 0.5 m and the same process was repeated until GL-3 m was injected.
【表】
上記において市販セメント急結剤は電気化学工
業デンカES（主成分CaO、Al2O3、CaSO4の溶融
混合物）を用いた。
液における市販セメント急結剤の構成性
デンカES 10Kg
ESセツタ 0.25Kg
よりなる、液を合流するとほぼ20秒でゲル化
する。
掘削調査の結果、粗砂地盤、細砂地盤共に注入
管を中心としてほぼ直径１ｍ位の固結体が形成さ
れていた。
比較のために液のみで0.5ｍ各に120づつ注
入したあと掘削したが粗砂地盤には固結体は殆ん
どみられず砂レキ地盤のみに不規則に固結体が形
成されているのが判つた。[Table] In the above, Denka Kagaku Kogyo Denka ES (a molten mixture of main components CaO, Al 2 O 3 and CaSO 4 ) was used as a commercially available cement quick setting agent. Composition of commercially available cement quick-setting agents in liquids: Denka ES 10Kg ES Setta 0.25Kg When the liquids are combined, they gel in about 20 seconds. As a result of the excavation investigation, a solid body with a diameter of approximately 1 m had been formed around the injection pipe in both the coarse sand ground and the fine sand ground. For comparison, we excavated after injecting 120 ml of liquid into each 0.5 m area, but found that almost no solids were found in the coarse sandy ground, and only irregularly formed solids were found in the sandy ground. I found out.
第１図は本発明工法を実施するための一具体的
装置の構成図を示す。
１，１′，１″……配合液配合装置、２，２′，
２″……注入ポンプ、３……多重管外管、３′……
多重管内管、５，５′，５″……圧力測定器、６，
６′，６″……流量測定器、７……昇降機、７′…
…注入管深度計、８……コントローラ、９……内
管から注入管先端部への流入部、９′……注入管
先端部、１０，１０′，１０″……圧力計からコン
トローラーへの情報通知回路、１１，１１′，１
１″……流量計からコントローラーへの情報通知
回路、１２……注入深度計からコントローラーへ
の情報通知回路、１３，１３′，１３″……コント
ローラーから注入ポンプへの指示回路、１４……
注入材組み合わせ調整装置、１５……コントロー
ラーから注入材組み合わせ調整装置の指示回路、
１６……コントローラーから昇降機への指持回
路、１７，１７′，１７″……コントローラーから
配合液配合装置への指示回路、Ａ：急結用反応配
合液、Ｂ：主材配合液、Ｃ：反応剤配合液。
FIG. 1 shows a configuration diagram of a specific device for carrying out the construction method of the present invention. 1, 1', 1''...Compounded liquid blending device, 2, 2',
2″...Infusion pump, 3...Multiple outer tube, 3'...
Multiple tube inner tube, 5, 5', 5''...pressure measuring device, 6,
6', 6''...Flow rate measuring device, 7...Elevator, 7'...
...Injection tube depth gauge, 8...Controller, 9...Inflow part from inner tube to injection tube tip, 9'...Injection tube tip, 10, 10', 10''...Pressure gauge to controller Information notification circuit, 11, 11', 1
1''...Information notification circuit from the flow meter to the controller, 12...Information notification circuit from the injection depth meter to the controller, 13, 13', 13''...Instruction circuit from the controller to the injection pump, 14...
Injection material combination adjustment device, 15...Instruction circuit from the controller to the injection material combination adjustment device;
16... Indication circuit from the controller to the elevator, 17, 17', 17''... Indication circuit from the controller to the compounded liquid blending device, A: Rapid setting reaction compounded liquid, B: Main material compounded liquid, C: Reactant mixture liquid.
Claims (1)
し、この多重管を移動して注入ステージを変化さ
せながら前記多重管内の複数の管路を通して、固
結時間の異なる複数の注入材を注入する複合注入
工法において、 (A) 前記内管の先端が外管のそれよりも短く形成
されて該多重管先端部が混合室となつており、
固結時間の異なる複数の注入材のうち、固結時
間の短い方の注入材は固結時間が30秒以内であ
つて、主剤配合液と反応剤配合液とを上記多重
管内の複数の管路を通して送液して前記混合室
で合流して形成され、そして該多重管の外管下
部吐出口より地盤に注入され、 (B) 固結時間の長い方の注入材は前記外管下部吐
出口より注入され、かつ固結時間の短い方の注
入材と固結時間の長い方の注入材の注入を切り
かえながら注入することにより、これら複数の
注入材を注入する時期をずらして地盤に注入
し、 (C) 前記固結時間の短い方の注入材は注入深度１
ｍ当たり１以上の注入量であつて注入管まわ
りの空隙にパツカー効果を有する填充物を形成
すると共に逸脱しやすい部分を填充し、かつ固
結時間の長い方の注入材は固結時間の短い方の
注入材が注入された領域に前記填充物をやぶつ
て浸透せしめることを特徴とする地盤注入工
法。[Claims] 1. Insert a multiple tube including an inner tube and an outer tube into the ground, and move the multiple tube to change the injection stage while passing through a plurality of pipes in the multiple tube to determine the consolidation time. In a composite injection method in which a plurality of different injection materials are injected, (A) the tip of the inner tube is formed shorter than that of the outer tube, and the tip of the multiple tube serves as a mixing chamber;
Among multiple injection materials with different solidification times, the injection material with a shorter solidification time has a solidification time of 30 seconds or less, and the base compound solution and reactant compound solution are passed through multiple tubes in the multi-tube system. (B) The injected material having a longer solidification time is sent to the ground through the outlet at the bottom of the outer tube of the multi-layered tube, and is formed by converging in the mixing chamber. By injecting from the outlet and switching between the injection material with a shorter consolidation time and the injection material with a longer consolidation time, these multiple injection materials can be injected into the ground at different times. (C) The injection material with the shorter consolidation time has an injection depth of 1.
The injection amount is 1 or more per m, which forms a filler having a Packer effect in the void around the injection pipe, and fills the parts that are likely to dislodge, and the injection material with a longer solidification time has a shorter solidification time. A ground injection method characterized by breaking the filler and allowing it to penetrate into the area into which the filler has been injected.
Priority Applications (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4881279A JPS55142816A (en) | 1979-04-20 | 1979-04-20 | Constructing method and device by using composite grout |
| DE19803014863 DE3014863A1 (en) | 1979-04-20 | 1980-04-17 | METHOD FOR STRENGTHENING SOILS |
| GB8012661A GB2052604B (en) | 1979-04-20 | 1980-04-17 | Multiple grouting process for soil stabilisation |
| NLAANVRAGE8002265,A NL181372C (en) | 1979-04-20 | 1980-04-18 | PROCESS FOR STRENGTHENING AND PROOFING THE BOTTOM FOR WATER. |
| IT21504/80A IT1149855B (en) | 1979-04-20 | 1980-04-18 | SOIL COMPACTION PROCEDURE |
| ES490696A ES490696A0 (en) | 1979-04-20 | 1980-04-18 | A MULTIPLE GROUT FILLING PROCEDURE TO CONSO-LEAD BAD QUALITY LAND. |
| CA350,168A CA1131456A (en) | 1979-04-20 | 1980-04-18 | Multiple grouting process |
| MX182041A MX152460A (en) | 1979-04-20 | 1980-04-21 | IMPROVEMENTS IN MULTIPLE TILE PROCEDURE TO SOLID THE POOR LAND |
| FR8008878A FR2454481A1 (en) | 1979-04-20 | 1980-04-21 | PROCESS FOR CONSOLIDATION OF THE SOIL BY INJECTION OF MATERIALS |
| AU57626/80A AU527860B2 (en) | 1979-04-20 | 1980-04-21 | Solidifying soil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4881279A JPS55142816A (en) | 1979-04-20 | 1979-04-20 | Constructing method and device by using composite grout |
Related Child Applications (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15263579A Division JPS55142819A (en) | 1979-11-26 | 1979-11-26 | Multiple injection-pipe device and ground injection method using thereof |
| JP10904283A Division JPS5927019A (en) | 1983-06-17 | 1983-06-17 | Composite injection work |
| JP10904483A Division JPS5927021A (en) | 1983-06-17 | 1983-06-17 | Composite injection work |
| JP10904383A Division JPS5927020A (en) | 1983-06-17 | 1983-06-17 | Ground injection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS55142816A JPS55142816A (en) | 1980-11-07 |
| JPS6117970B2 true JPS6117970B2 (en) | 1986-05-10 |
Family
ID=12813610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4881279A Granted JPS55142816A (en) | 1979-04-20 | 1979-04-20 | Constructing method and device by using composite grout |
Country Status (10)
| Country | Link |
|---|---|
| JP (1) | JPS55142816A (en) |
| AU (1) | AU527860B2 (en) |
| CA (1) | CA1131456A (en) |
| DE (1) | DE3014863A1 (en) |
| ES (1) | ES490696A0 (en) |
| FR (1) | FR2454481A1 (en) |
| GB (1) | GB2052604B (en) |
| IT (1) | IT1149855B (en) |
| MX (1) | MX152460A (en) |
| NL (1) | NL181372C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH023265U (en) * | 1988-06-18 | 1990-01-10 | ||
| JP7265301B1 (en) * | 2022-12-23 | 2023-04-26 | 強化土エンジニヤリング株式会社 | Ground injection method |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5886212A (en) * | 1981-11-17 | 1983-05-23 | Sanshin Kensetsu Kogyo Kk | Switching device for feeding of grout |
| JPS58218511A (en) * | 1982-02-06 | 1983-12-19 | Nippon Sogo Bosui Kk | Control method and apparatus for grout injection pipe |
| US4545702A (en) * | 1982-07-02 | 1985-10-08 | Toa Grout Kogyo Co., Ltd. | Boring-injection device, method for improving ground by means of the device and method for investigating ground state by means of the device |
| DE3307619A1 (en) * | 1983-03-03 | 1984-10-11 | Gkn Keller Gmbh, 6050 Offenbach | INJECTION METHODS FOR IMPROVING THE SOIL IN LOCKED STOCK BY INJECTING A QUICKLY HARDENING INJECTION DIMENSION INTO WATERPROOF OR MINIMUM WATERPROOF, THEREFORE IN BINDING SOILS |
| JP2557902B2 (en) * | 1987-08-25 | 1996-11-27 | 電気化学工業株式会社 | Ground injection method |
| US5217327A (en) * | 1988-11-18 | 1993-06-08 | N.I.T. Co., Ltd. | Ground reforming method with a hardening material mixed and injected at a super high pressure and reforming device of same |
| US5382116A (en) * | 1988-11-18 | 1995-01-17 | N.I.T. Co., Ltd. | Ground reforming method with a hardening material mixed and injected at a super high pressure and reforming device of same |
| CA2315468A1 (en) * | 2000-08-10 | 2002-02-10 | Thermax International Corp. | Multi grouting system |
| CN115945494A (en) * | 2022-12-29 | 2023-04-11 | 武汉中科固废资源产业技术研究院有限公司 | Leakage repairing method for operating solid waste landfill seepage-proofing system |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1987626A (en) * | 1930-01-21 | 1935-01-15 | Deutsche Werke Kiel Ag | Process of and apparatus for filling cracks and crevices |
| US2075244A (en) * | 1934-06-14 | 1937-03-30 | Patents And Licensing Corp | Process for solidifying earth |
| US2233872A (en) * | 1936-07-27 | 1941-03-04 | California Talc Company | Means and method for solidifying underground structures |
| US3636717A (en) * | 1969-11-03 | 1972-01-25 | Texaco Inc | Pile anchoring method and apparatus |
| NL174381C (en) * | 1975-12-30 | 1984-06-01 | Kyokado Eng Co | PROCESS FOR STRENGTHENING AND PROOFING THE BOTTOM FOR WATER. |
-
1979
- 1979-04-20 JP JP4881279A patent/JPS55142816A/en active Granted
-
1980
- 1980-04-17 GB GB8012661A patent/GB2052604B/en not_active Expired
- 1980-04-17 DE DE19803014863 patent/DE3014863A1/en not_active Ceased
- 1980-04-18 CA CA350,168A patent/CA1131456A/en not_active Expired
- 1980-04-18 IT IT21504/80A patent/IT1149855B/en active
- 1980-04-18 NL NLAANVRAGE8002265,A patent/NL181372C/en not_active IP Right Cessation
- 1980-04-18 ES ES490696A patent/ES490696A0/en active Granted
- 1980-04-21 MX MX182041A patent/MX152460A/en unknown
- 1980-04-21 AU AU57626/80A patent/AU527860B2/en not_active Ceased
- 1980-04-21 FR FR8008878A patent/FR2454481A1/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH023265U (en) * | 1988-06-18 | 1990-01-10 | ||
| JP7265301B1 (en) * | 2022-12-23 | 2023-04-26 | 強化土エンジニヤリング株式会社 | Ground injection method |
Also Published As
| Publication number | Publication date |
|---|---|
| MX152460A (en) | 1985-07-25 |
| GB2052604A (en) | 1981-01-28 |
| ES8103239A1 (en) | 1981-02-16 |
| ES490696A0 (en) | 1981-02-16 |
| CA1131456A (en) | 1982-09-14 |
| IT1149855B (en) | 1986-12-10 |
| DE3014863A1 (en) | 1980-10-23 |
| JPS55142816A (en) | 1980-11-07 |
| AU5762680A (en) | 1981-03-19 |
| FR2454481A1 (en) | 1980-11-14 |
| FR2454481B1 (en) | 1983-10-07 |
| AU527860B2 (en) | 1983-03-24 |
| NL8002265A (en) | 1980-10-22 |
| NL181372B (en) | 1987-03-02 |
| NL181372C (en) | 1987-08-03 |
| IT8021504A0 (en) | 1980-04-18 |
| GB2052604B (en) | 1983-01-12 |
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