JPH0455515A - Slime suction injection method and its equipment - Google Patents
Slime suction injection method and its equipmentInfo
- Publication number
- JPH0455515A JPH0455515A JP16417090A JP16417090A JPH0455515A JP H0455515 A JPH0455515 A JP H0455515A JP 16417090 A JP16417090 A JP 16417090A JP 16417090 A JP16417090 A JP 16417090A JP H0455515 A JPH0455515 A JP H0455515A
- Authority
- JP
- Japan
- Prior art keywords
- injection
- slime
- suction
- hardening material
- injection nozzle
- 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
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は軟弱地盤の安定、構築物の基礎、地山の支保、
トンネル掘削時の覆工支保等を目的とする地盤硬化材注
入層を造成する際に施工されるスライム吸引注入工法に
関するものである。[Detailed Description of the Invention] (Industrial Application Field) The present invention is applicable to the stabilization of soft ground, the foundation of structures, the support of ground,
This invention relates to a slime suction injection method that is used when creating a soil hardening material injection layer for the purpose of supporting lining during tunnel excavation.
（従来の技術）
従来、地盤硬化材の注入には高圧注入と低圧注入があり
、高圧注入には更に買換充填と圧密充填とが考えられ固
結時間にょる緩結、瞬結注入形態による多段注入、複合
注入等多くの工法が開発されてきた。しかし、いずれの
場合においても−気に硬化材が対象地盤に吸収、含浸さ
れるものではなく、地下水等を含む多量の浴出スライム
か発生している。この浴出スライムに対する対応策とし
ては、注入ロッド挿入口からの吸引収集が提案されてい
る他は、注入ロッド・挿入口にバッカーを設けて地中に
押し戻すか、地上に溢出させて垂れ流すかの対応しかな
されていない。(Conventional technology) Conventionally, there are high-pressure injection and low-pressure injection in the injection of soil hardening materials, and high-pressure injection can be further considered as replacement filling and consolidation filling. Many construction methods have been developed, such as multistage injection and composite injection. However, in either case, the air hardening agent is not absorbed and impregnated into the target ground, and a large amount of bath slime containing groundwater etc. is generated. As a countermeasure for this bath slime, it has been proposed to collect it by suction from the injection rod insertion port, but also to install a backer on the injection rod/insertion port and push it back into the ground, or to let it overflow to the ground and drip out. Only the following measures have been taken.
また、その場合には硬化材と同時にエア噴射を行ってエ
アリフト効果の助けを借りるのが常である。Furthermore, in that case, it is common to use air jetting at the same time as the hardening material to take advantage of the air lift effect.
（発明が解決しようとする問題点）
従来の浴出スライム対応策は垂れ流しの場合は勿論、パ
ッカーを設けた場合でも完全にスライムを地中に押し戻
すことはできず、様々な成分を含んだ泥水状のスライム
の処理に極めて高額な費用がかかっている。勿論、スラ
イムは産業廃棄物であり、放置すれば公害発生の原因と
なり、形態としては粘度の高い流動体で極めて取扱い難
く、現物から処理施設への運搬にも多くの問題が存在し
、処理費の高額化に拍車をかけでいる。(Problems to be solved by the invention) Conventional measures to deal with slime from bathing do not completely push the slime back into the ground, not only when it is drained, but also when a packer is installed, and muddy water containing various components is used. The cost of processing slime is extremely high. Of course, slime is an industrial waste, and if left untreated, it can cause pollution.In its form, it is a highly viscous fluid that is extremely difficult to handle, and there are many problems in transporting the actual product to treatment facilities, resulting in high processing costs. This is accelerating the rise in prices.
一方、スライムをバンカーにより押し戻したり垂れ流し
状態にルておくことにより、硬化材の有効成分や硬化し
かけたスラッジ部分をスライムが一緒に押し流して逸出
させてしまい、スライムの流動の激しい部分では、硬化
層が痩身状態になるなど注入効果の面で多くのマイナス
点を生じている。On the other hand, by pushing the slime back through the bunker or leaving it in a dripping state, the active ingredients of the hardening agent and the hardened sludge parts are washed away together with the slime, causing them to escape. There are many negative points in terms of injection effects, such as thinning of the layer.
即ち、対象地盤中のスライムは、そのまま地中の密度を
高め、硬化材の噴射圧を減殺する方向に働くと共に、注
入された硬化材を希釈してその純度を低くするうえに、
その不純化が注入層の固結強度にも影響を与えるのは勿
論で、浴出スライムの処理は注入効果にも多くの問題点
を残しているものである。これらに対して注入ロッド挿
入口からのスライムの吸引収集は消極策として効果を挙
げているが、大掛かりな吸引装置が必要であり、特に注
入深度が深くなると注入ロッド挿入クリアランスに目詰
まりを生じたりして、地上までスライムをリフトするこ
とか出来ないという問題かある。特にトンネルの支保覆
工のように水平方向にロフトを挿入しての硬化材注入の
場合にはエアーによるリフト効果は全く望めないため、
スライムの排出は大きな問題となっている。In other words, the slime in the target ground directly increases the density of the ground, reduces the injection pressure of the hardening material, and dilutes the injected hardening material to lower its purity.
Of course, the impurity affects the consolidation strength of the injection layer, and the treatment of bathed slime leaves many problems regarding the injection effect. In response to these problems, suction collection of slime from the injection rod insertion port has been effective as a negative measure, but it requires a large-scale suction device, and the injection rod insertion clearance may become clogged, especially when the injection depth is deep. Then, there is the problem that it is not possible to lift the slime to the ground. In particular, when injecting hardening material by inserting a loft horizontally, such as in tunnel shoring, no lifting effect can be expected from air.
Slime discharge has become a major problem.
（問題点を解決するための手段）
本発明は厄介物として押し戻したり、垂れ流したりした
浴出スライムを、注入ロッド°自体に設けた吸引スリッ
トによってコンパクトに吸引収集することによって注入
効果を高め、スライムの処理も一挙に行なって作業性の
向上、注入効果の両面から問題点の解決をはかろうとす
るものである。更に注入ロッドの硬化材圧送経路に流量
計測機構を設けて地盤硬化材の噴射注入量をその場で測
定しながら注入調整を行うことが出来るようにしたもの
である。(Means for Solving the Problems) The present invention improves the injection effect by compactly collecting the bath slime that has been pushed back or dripped out as a nuisance using a suction slit provided in the injection rod itself, and The aim is to solve the problems from both the viewpoints of improving workability and injection effectiveness by performing these treatments all at once. Furthermore, a flow rate measuring mechanism is provided in the hardening material pumping path of the injection rod, so that the amount of injection of ground hardening material can be measured on the spot and the injection can be adjusted.
（作 用）
浴出スライムが硬化材噴射ノズルから所定の間隔を置い
て設けられた吸引スリットによって吸引されると、スラ
イムの質量によって負荷された硬化材噴射圧に対する負
担が減少し、空隙率も増すので、噴射された硬化材噴流
の到達距離が伸びる。また、噴射ノズルと吸引スリット
との適切な間隔は注入ロッドの径と硬化材の種類、噴射
圧、吸引力によって異なるが、適切な間隔を調整できた
場合には、噴射と吸引の相乗効果による極めて効果的な
注入を行うことができる。(Function) When the bathed slime is sucked by the suction slit provided at a predetermined interval from the hardening material injection nozzle, the burden on the hardening material injection pressure imposed by the mass of the slime is reduced, and the porosity also decreases. This increases the reach of the injected hardening material jet. In addition, the appropriate distance between the injection nozzle and the suction slit varies depending on the diameter of the injection rod, the type of hardening material, the injection pressure, and the suction power, but if the appropriate interval can be adjusted, the synergistic effect of the injection and suction Very effective injections can be made.
（実 施 例） 以下図面に従って本発明の詳細な説明する。(Example) The present invention will be described in detail below with reference to the drawings.
ｌは注入ロッドで、その先端部側壁に設けられる噴射ノ
ズル２と吸引スリット３の各開口部に開口する多重経路
を有し、回転駆動機構９によって支持され、前進、後退
、回転もしくは回動等の作動を与えられる。1 is an injection rod, which has multiple paths opening to the respective openings of the injection nozzle 2 and the suction slit 3 provided on the side wall of its tip end, and is supported by a rotary drive mechanism 9, and is capable of moving forward, backward, rotating, rotating, etc. operation is given.
噴射ノズル２に開口する硬化材圧送経路７は、スイベル
４を介して供給される硬化材の供給部に連絡する注入ホ
ース５に連結し、その外壁には超音波の発信素子と受信
素子をモールドしたトランジューサー８１と圧力センサ
ー８２か設置され、カウンター／ステム８にケーブル接
続されている。A hardening material pressure feeding path 7 that opens to the injection nozzle 2 is connected to an injection hose 5 that communicates with a hardening material supply section through a swivel 4, and an ultrasonic transmitting element and a receiving element are molded on the outer wall of the injection hose 5. A transducer 81 and a pressure sensor 82 are installed and connected to the counter/stem 8 by cable.
３は吸引スリットで噴射ノズル２の後部に所定の間隔を
置いて開口し、吸引ポンプ３１の作動により噴射ノズル
２からの噴射作動によって生ずる浴出スライムを積極的
に吸引し、フィルタープレス６に送入する。なお、吸引
スリット３の後部に適宜のバッカーを設ければ、吸引効
果を高めることかできる。Reference numeral 3 denotes suction slits which are opened at a predetermined interval at the rear of the injection nozzle 2, and when the suction pump 31 operates, the bath slime generated by the injection operation from the injection nozzle 2 is actively sucked and sent to the filter press 6. Enter. Note that if a suitable backer is provided at the rear of the suction slit 3, the suction effect can be enhanced.
フィルターブレス６は開閉可能に並列された濾枠６１と
剥離板６２からなる濾過脱水室と濾枠と剥離板を支持す
る支持枠６３と支持枠を開閉枠６７により作動して濾枠
の開閉を行うシャフト６４からなる作動部からなってお
り、送入ｆ！Ｂ６５から送入された泥水スライムは送水
圧で開鎖された濾過脱水室に充填され濾布６８に濾過さ
れた濾過水なけが流過して排水部６日から排出される。The filter breath 6 includes a filtration/dehydration chamber consisting of a filter frame 61 and a peeling plate 62 that are arranged in parallel so that they can be opened and closed, a support frame 63 that supports the filter frame and the peeling plate, and an opening/closing frame 67 that operates the support frame to open and close the filter frame. It consists of an operating section consisting of a shaft 64 that performs the feeding f! The muddy slime sent from B65 is filled into a filtration and dehydration chamber which is opened by the water supply pressure, and the filtered water filtered through the filter cloth 68 flows and is discharged from the drainage section 6.
フィルターブレス６は７ｋｇ／ａ＋ｆ程度の流圧で自動
的に濾過作用を行うが、本発明の場合には吸引作用を伴
うので、更に強力なものを用いてシステム化すれば効果
的である。The filter breath 6 automatically performs a filtration action with a flow pressure of about 7 kg/a+f, but in the case of the present invention, it is accompanied by a suction action, so it would be effective to systemize it using a more powerful one.
脱水されたスライムのスランプはケーキ化されンヤフト
６４の作動によって定期的に開枠される濾枠から剥離板
によって剥離されて落下する・以上のような装置システ
ムを用い、注入ロッド１は回転等の適宜手段によって対
象地盤に推進挿入される。The dehydrated slime slump is turned into a cake and is peeled off by a peeling plate and falls from the filter frame, which is periodically opened by the operation of the shaft 64. Using the above-mentioned device system, the injection rod 1 is rotated, etc. It is propelled and inserted into the target ground by appropriate means.
所定深度において、噴射ノズル２から地盤硬化材を２０
０ｋｇｆ ／ａｄ程度の高圧力、流量１００ｊ’／ｉｉ
ｎ前後で噴射しながら注入ロッドｌを回転後退させ、更
にポンプ３１を作動させると噴射による破砕力を失って
飽和状態となった泥水スライムが吸引スリットから吸引
され、注入ロッドｌ内に設けられた吸引経路を通じてフ
ィルターブレス６に送入される。噴射ノズル２から高圧
噴射された硬化材はスライム吸引によって空隙率の増し
た周辺土壌を攪拌混合して円柱上に地盤硬化材注入層を
造成して行く。この間、硬化材圧送路１ｉ！８７に設置
されたトランジューサー８１にょる超音波発信と圧力セ
ンサー８２による流盪計測が操作部のカウンターシステ
ムにより捕捉され、操作部からの注入管理が行われる。At a predetermined depth, the soil hardening material is sprayed from the injection nozzle 2 for 20 minutes.
High pressure around 0kgf/ad, flow rate 100j'/ii
When the injection rod 1 is rotated backward while injecting around n, and the pump 31 is further activated, the muddy water slime, which has lost the crushing force caused by the injection and has become saturated, is sucked from the suction slit, which is provided in the injection rod 1. It is sent to the filter breath 6 through the suction path. The hardening material injected at high pressure from the injection nozzle 2 stirs and mixes the surrounding soil with increased porosity due to slime suction, thereby creating a ground hardening material injection layer on the cylinder. During this time, hardening material pressure feeding path 1i! The ultrasonic transmission by the transducer 81 installed at 87 and the flow measurement by the pressure sensor 82 are captured by the counter system of the operating section, and injection management from the operating section is performed.
（発明の効果）
本発明は以上のように構成したので、注入効果を減殺し
、公害の発生因ともなる泥水スライムを噴射ノズルの直
近において吸引除去すると共に、地上や操作部からの注
入管理により噴射圧を効果的にして硬化材噴流の到達距
離を伸長し、純度の高い大騒の硬化材注入層が造成でき
る。更に、泥水スライムの処理を同時に行うことができ
、作業面、コスト面の両面から効率を高める効果がある
。(Effects of the Invention) Since the present invention is configured as described above, it is possible to reduce the injection effect and remove muddy water slime, which causes pollution, by suction in the vicinity of the injection nozzle, and to control the injection from the ground or the operation part. By increasing the injection pressure effectively and extending the reach of the hardening material jet, it is possible to create a noisy hardening material injection layer with high purity. Furthermore, muddy slime can be treated at the same time, which has the effect of increasing efficiency in terms of both work and cost.
図は本発明の実施例を示すもので、第１図は施工状況を
示す全体説明図、第２図は注入ロッド先端部の拡大説明
図、第３図はフィルタープレスの開閉状況を示す説明図
、第４図は同じく濾枠と開閉枠の関係を半面ずつで示し
たフィルタープレスの側面図、第５図はトランスジュー
サーの設置状況を示す硬化材圧送経路７の横断面図であ
る。
１〜注入ロツト ２〜噴射ノズル ３〜吸引スリツト３
１〜吸引ポンプ ４〜スイベル ５〜注入ホース ６〜
フイルタープレス ６１〜濾枠６２〜剥離板６３〜支持
枠６４〜シャフト６５〜送入部 ６６〜排水部 ６７〜
開閉枠 ６８〜濾布 ７〜硬化材圧送経路 ８〜カウン
ターシステム８１〜トランスジユーサー ８２〜圧力セ
ンサ一９〜回転駆動機構 １０〜ロア）操作機構Ａ〜超
音波の発信素子 Ｂ〜超音波の受信素子Ｇ〜対象地盤
特許呂願人 中 嶋 志 朗
（外１名）The figures show an embodiment of the present invention. Figure 1 is an overall explanatory diagram showing the construction status, Figure 2 is an enlarged explanatory diagram of the tip of the injection rod, and Figure 3 is an explanatory diagram showing the opening and closing status of the filter press. , FIG. 4 is a side view of the filter press showing the relationship between the filter frame and the opening/closing frame in half, and FIG. 5 is a cross-sectional view of the hardening material pumping path 7 showing how the transducer is installed. 1 ~ Injection rod 2 ~ Injection nozzle 3 ~ Suction slit 3
1~Suction pump 4~Swivel 5~Injection hose 6~
Filter press 61 ~ filter frame 62 ~ peeling plate 63 ~ support frame 64 ~ shaft 65 ~ feeding section 66 ~ drainage section 67 ~
Opening/closing frame 68~Filter cloth 7~Hardening material pressure feeding path 8~Counter system 81~Transducer 82~Pressure sensor 9~Rotation drive mechanism 10~Lower) Operation mechanism A~Ultrasonic transmitting element B~Ultrasonic reception Motoko G ~ Subject ground patent applicant Shiro Nakajima (1 other person)
Claims (4)
ら所定間隔を置いた部位に吸引スリットを開口させた注
入ロッドを対象地盤に挿入し、噴射ノズルから高圧で地
盤硬化材を噴射する一方、この噴射によって溢出する泥
水スライムを上記の吸引スリットによって吸引しながら
注入ロッドを回動させつつ引き抜き移動することにより
地盤硬化材を圧力注入することを特徴とするスライム吸
引注入工法(1) An injection nozzle is installed on the side wall of the tip, and an injection rod with a suction slit opened at a predetermined distance from the injection nozzle is inserted into the target ground, and the ground hardening material is injected at high pressure from the injection nozzle. , A slime suction injection method characterized in that the muddy slime overflowing by this injection is sucked by the suction slit, and the ground hardening material is injected under pressure by rotating and pulling out the injection rod.
分隔経路を有する注入ロッドの先端部側壁に噴射ノズル
を設け、同噴射ノズルから所定間隔を置いた部位に吸引
スリットを開口させたことを特徴とするスライム吸引注
入装置(2) An injection nozzle is provided on the side wall of the distal end of the injection rod, which is supported by a rotating mechanism and an advance/retreat mechanism and has multiple separation paths, and a suction slit is opened at a predetermined distance from the injection nozzle. Characteristic slime suction injection device
ライムをスラッジケーキと濾過水に分離して処理するフ
ィルタープレスに連絡させるようにした特許請求の範囲
（２）記載のスライム吸引注入装置(3) The slime suction and injection device according to claim (2), wherein the slime suction path that opens the suction slit is connected to a filter press that separates and processes the slime into a sludge cake and filtered water.
子と受信をモールドしたトランスジューサーを設置した
特許請求の範囲（２）記載のスライム吸引注入装置(4) The slime suction and injection device according to claim (2), wherein a transducer in which an ultrasonic transmitting element and a receiver are molded is installed in the hardening material pressure feeding path of the injection rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2164170A JP2561745B2 (en) | 1990-06-25 | 1990-06-25 | Slime suction injection method and its equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2164170A JP2561745B2 (en) | 1990-06-25 | 1990-06-25 | Slime suction injection method and its equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0455515A true JPH0455515A (en) | 1992-02-24 |
| JP2561745B2 JP2561745B2 (en) | 1996-12-11 |
Family
ID=15788061
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2164170A Expired - Lifetime JP2561745B2 (en) | 1990-06-25 | 1990-06-25 | Slime suction injection method and its equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2561745B2 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5310512A (en) * | 1976-07-15 | 1978-01-31 | Konoikegumi Kk | Subsoil improving method |
| JPS5869035U (en) * | 1981-10-31 | 1983-05-11 | 株式会社神戸製鋼所 | Air recovery stirring blade device for injection stirring type ground improvement machine |
| JPS61162624A (en) * | 1985-01-07 | 1986-07-23 | N I T:Kk | Underground stable supporting layer and forming method thereof |
| JPS62141220A (en) * | 1985-12-12 | 1987-06-24 | Nippon Kiso Gijutsu Kk | Ground improving work |
| JPH01315518A (en) * | 1988-03-14 | 1989-12-20 | Nit Co Ltd | Ground improving method by superhigh pressure mixing hardener jet and device thereof |
| JPH01318616A (en) * | 1988-06-20 | 1989-12-25 | Nit Co Ltd | Method of construction for ground hardener injecting |
-
1990
- 1990-06-25 JP JP2164170A patent/JP2561745B2/en not_active Expired - Lifetime
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5310512A (en) * | 1976-07-15 | 1978-01-31 | Konoikegumi Kk | Subsoil improving method |
| JPS5869035U (en) * | 1981-10-31 | 1983-05-11 | 株式会社神戸製鋼所 | Air recovery stirring blade device for injection stirring type ground improvement machine |
| JPS61162624A (en) * | 1985-01-07 | 1986-07-23 | N I T:Kk | Underground stable supporting layer and forming method thereof |
| JPS62141220A (en) * | 1985-12-12 | 1987-06-24 | Nippon Kiso Gijutsu Kk | Ground improving work |
| JPH01315518A (en) * | 1988-03-14 | 1989-12-20 | Nit Co Ltd | Ground improving method by superhigh pressure mixing hardener jet and device thereof |
| JPH01318616A (en) * | 1988-06-20 | 1989-12-25 | Nit Co Ltd | Method of construction for ground hardener injecting |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2561745B2 (en) | 1996-12-11 |
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