JP3418069B2 - Injection method and injection equipment - Google Patents
Injection method and injection equipmentInfo
- Publication number
- JP3418069B2 JP3418069B2 JP24405696A JP24405696A JP3418069B2 JP 3418069 B2 JP3418069 B2 JP 3418069B2 JP 24405696 A JP24405696 A JP 24405696A JP 24405696 A JP24405696 A JP 24405696A JP 3418069 B2 JP3418069 B2 JP 3418069B2
- Authority
- JP
- Japan
- Prior art keywords
- injection
- pipe
- ground
- injected
- controller
- 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 - Fee Related
Links
Description
【０００１】[0001]
【発明の属する技術分野】本発明は注入対象地盤に設け
られた複数の注入孔の所望の任意の注入孔に、注入材貯
蔵槽からの注入材を送液管を通して注入孔の選定管理の
下に連続して注入する注入工法ならびに注入装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention manages the selection of injection holes from the injection material storage tank through a liquid delivery pipe to desired injection holes of a plurality of injection holes provided in the ground to be injected. TECHNICAL FIELD The present invention relates to an injection method and an injection device for continuously injecting into a container.
【０００２】特に、本発明は地下掘削工事や荷重の作用
等によって地盤の変位が予想される建造物近傍あるいは
道路面下に、重大な変位が生じる前に注入材を注入して
変位を防止し、あるいは地盤の変位が生じた建造物近傍
あるいは道路面下に、変位が生じた時点で変位を修復す
る注入工法ならびに注入装置に関する。In particular, the present invention prevents the displacement by injecting a pouring material before a significant displacement occurs near a building or under the road surface where the displacement of the ground is expected due to underground excavation work or the action of load. In addition, the present invention relates to an injection method and an injection device for repairing the displacement when the displacement occurs near the building or under the road surface where the ground displacement occurs.
【０００３】[0003]
【従来の技術】地盤に薬液注入材を注入して該地盤を固
結するに際して、従来、先端に吐出口を有する単管、二
重管等の注入管、吐出口を有する外管と、この外管内に
挿入されたダブルパッカーを有する内管とからなる二重
注入管、あるいは軸方向の異なる位置に複数の吐出口を
有する二重管等の注入管を地盤中に埋設の後、これら注
入管上端から注入材を導入して上述吐出口から地盤中に
該注入材を注入する方式が採用されていた。2. Description of the Related Art Conventionally, when a chemical injection material is injected into a ground to consolidate the ground, an injection pipe such as a single pipe or a double pipe having a discharge port at its tip, an outer pipe having a discharge port, and A double injection pipe consisting of an inner pipe with a double packer inserted into the outer pipe, or a double injection pipe with multiple discharge ports at different axial positions is buried in the ground and then injected A method has been adopted in which the injection material is introduced from the upper end of the pipe and the injection material is injected into the ground through the discharge port.
【０００４】[0004]
【発明が解決しようとする課題】しかし、この種の方式
では、たとえ上述注入管を地盤中に複数本埋設して注入
しても、これら複数本による注入はそれぞれ別々に挙動
し、どの注入孔を選定してこれにどの位の量を注入する
かについて、あるいはこれら選定、注入を連続して行う
ことについては管理され得ず、したがって、注入孔の選
定管理のもとに所望量連続して注入することは不可能で
あった。However, in this type of method, even if a plurality of the above-mentioned injection pipes are buried in the ground and injected, the injection by these plural pipes behaves differently and which injection hole is used. However, it is not possible to control how much amount is to be injected into this, or how to continuously perform these selections and injections. It was impossible to inject.
【０００５】一般に、注入対象となる地盤は沖積層が主
体であって、これは土粒子が滞積して形成されたもので
ある。このような土質層における注入工法の課題は、水
平方向に異なる透水性を有する土層が交互に存在するた
め、従来の垂直方向に注入ステージを移向させる注入工
法では、ある深度では注入材が逸脱してしまったり、あ
るいは広く浸透してしまったり、さらには部分的に狭い
範囲でしか浸透固結しなかったり、等の点にある。した
がって、上述の注入工法では、各注入孔における注入が
独自に行われて隣接同志が関連性をもたないため、確実
な注入効果が期待できない。Generally, the ground to be injected is mainly alluvium, which is formed by accumulating soil particles. The problem of the pouring method in such a soil layer is that the pouring material is moved at a certain depth in the pouring method of moving the pouring stage in the vertical direction in the related art because the ponds having different water permeability are alternately present in the horizontal direction. It may deviate, or may permeate widely, or even partially permeate and consolidate in a narrow range. Therefore, in the above-mentioned injection method, since the injection in each injection hole is performed independently and adjacent comrades have no relation, a reliable injection effect cannot be expected.
【０００６】また、近年、地下鉄工事、下水道工事等の
地下掘削工事が頻繁になるにつれ、掘削による余掘や応
力変化のために、周辺地盤、近接するビルや、建造物、
あるいは道路面が沈下等の変化を来すという問題が生じ
ている。さらに、建造物や交通の荷重により、基礎地盤
や道路が変位を起こすという問題も生じている。[0006] In recent years, as underground excavation work such as subway construction and sewer construction has become more frequent, the surrounding ground, adjacent buildings, structures,
Alternatively, there is a problem that the road surface changes such as subsidence. Furthermore, there is a problem that the foundation ground and roads are displaced due to the load of buildings and traffic.
【０００７】そこで、本発明の目的は注入対象地盤に設
けられた複数の注入孔の所望の任意の注入孔に注入材を
送液管を通して、注入孔の選定管理のもとに、所望量連
続して注入し得、上述の公知技術に存する欠点を改良し
た注入工法ならびに注入装置を提供することにある。Therefore, an object of the present invention is to continuously feed a desired amount of injection material through a liquid feed pipe through desired injection holes of a plurality of injection holes provided in a ground to be injected, under the control of selection of the injection holes. It is an object of the present invention to provide an injection method and an injection device which can be injected by performing the injection and improve the drawbacks of the above-mentioned known technique.
【０００８】さらに、本発明の他の目的は透水性の異な
る土層からなる注入対象地盤を各土層毎に連続的に注入
して均質に固結し得、上述の公知技術に存する欠点を改
良した注入工法ならびに注入装置を提供することにあ
る。Further, another object of the present invention is to allow the soil to be injected, which is composed of soil layers having different water permeability, to be continuously injected into each soil layer to be uniformly consolidated, which causes the drawbacks of the above-mentioned known art. An object is to provide an improved injection method and injection device.
【０００９】また、本発明のさらに他の目的は地下掘削
工事や荷重によって地盤や建造物に変位が予想され、あ
るいは変位が生じた建造物または基礎の近傍あるいは道
路面下に複数の注入孔を設け、この所望の注入孔に注入
材を送液管を通して、注入孔の選定管理のもとに所望量
連続して注入することにより、重大な変位が生ずる前に
変位を防止し、あるいは変位が生じた時点で変位を復元
する注入工法ならびに注入装置を提供することにある。Still another object of the present invention is to predict a displacement of the ground or a structure due to underground excavation work or a load, or to provide a plurality of injection holes near the structure or foundation where the displacement occurs or under the road surface. By providing the injection material through the liquid feed pipe to the desired injection hole and continuously injecting the desired amount under the selection management of the injection hole, the displacement can be prevented before the significant displacement occurs, or the displacement can be prevented. An object of the present invention is to provide an injection method and an injection device that restore the displacement when they occur.
【００１０】さらに、また、本発明の他の目的は大きな
空隙を有し、あるいは粘性土からなるゆるい地盤や弱い
地盤であって、変位しやすく、かつ、注入材を注入して
も逸脱してしまって密実で変位しにくい地盤に改良しに
くい地盤を良好に改良し得る注入工法ならびに装置を提
供することにある。Still another object of the present invention is a loose ground or weak ground having large voids or made of cohesive soil, which is easy to displace and deviates even when the injection material is injected. It is an object of the present invention to provide a pouring method and an apparatus capable of satisfactorily improving a ground that is tight and is hard to be displaced and that is hard to be improved.
【００１１】[0011]
【課題を解決するための手段】上述の目的を達成するた
め、本発明の注入工法によれば、注入対象地盤に設けら
れた複数の注入孔を注入材送液管にバルブを介してそれ
ぞれ連結し、これらバルブの開閉を管理することによ
り、注入材を前記送液管を通じて所望の単一または複数
の注入孔に選択的にかつ連続して注入することを特徴と
する。In order to achieve the above-mentioned object, according to the pouring method of the present invention, a plurality of pouring holes provided in the pouring target ground are respectively connected to the pouring material liquid feeding pipe via valves. However, by controlling the opening and closing of these valves, the injection material is selectively and continuously injected into a desired single or plural injection holes through the liquid supply pipe.
【００１２】さらに、上述の目的を達成するため、本発
明の注入工法によれば、注入対象地盤に設けられた複数
の注入孔に埋設された注入管であって、吐出口を有する
外管と、この外管内に挿入されたダブルパッカーを有す
る内管とからなる二重注入管の内管を注入材送液管にバ
ルブを介してそれぞれ連結し、これらバルブをそれぞれ
コントローラにつないで該コントローラからの指示によ
りバルブの開閉を管理して注入孔の選定管理を行い、こ
れにより注入材を前記送液管を通じて所望の注入孔に連
続して注入することを特徴とする。Further, in order to achieve the above-mentioned object, according to the pouring method of the present invention, a plurality of ponds provided on the ground to be poured are provided.
It is an injection pipe embedded in the injection hole of and has a discharge port.
Has an outer tube and a double packer inserted in this outer tube
Each connected via a valve to the tube and the inner tube of the double injection pipe consisting of the injection material feeding pipe that each of these valves
Connect to the controller and follow the instructions from the controller.
Control the opening and closing of the valve to control the selection of the injection hole.
As a result, the injection material is connected to the desired injection hole through the liquid delivery pipe.
It is characterized by continuous injection .
【００１３】上述の目的を達成するため、本発明の注入
装置によれば、注入対象地盤に設けられた複数の注入孔
と、この注入孔に挿入された注入管と、前記複数の注入
孔の各々にバルブを介してそれぞれ連通された注入材送
液管と、前記各バルブにそれぞれつながれたコントロー
ラとからなり、このコントローラからの指示により各バ
ルブの開閉を管理して注入孔の選定管理を行い、前記注
入管にさらに、注入ポンプおよび流量測定装置が配設さ
れ、これら注入ポンプおよび流量測定装置はそれぞれコ
ントローラとつながれており、該コントローラからの指
示により、注入ポンプの作動を管理して注入材の送液管
理を行うとともに、注入材の流量管理を行うようにし、
前記注入管が吐出口を有する外管と、この外管内の挿入
されたダブルパッカーを有する内管とから構成され、こ
れにより注入材を前記送液管を通じて所望の注入孔に連
続して注入することを特徴とする。In order to achieve the above-mentioned object, according to the injection device of the present invention, a plurality of injection holes provided in the ground to be injected are provided.
And an injection tube inserted into the injection hole, and the plurality of injection tubes.
The injection material is sent to each hole through a valve.
Liquid pipe and controller connected to each of the above valves
Each controller is instructed by this controller.
The opening and closing of the valve is controlled to control the selection of the injection hole.
In addition, an injection pump and a flow measuring device are installed in the inlet pipe.
These injection pumps and flow rate measuring devices
A finger from the controller.
The operation of the infusion pump is controlled according to the
And control the flow rate of the injection material,
An outer tube in which the injection tube has a discharge port, and an insertion in the outer tube
And an inner tube with a double packer
As a result, the injection material is connected to the desired injection hole through the liquid delivery pipe.
It is characterized by continuous injection .
【００１４】さらに、上述の目的を達成するため、本発
明の注入装置によれば、請求項８において、前記各注入
管にはそれぞれ、注入管引上機構が備えられ、これら注
入管引上機構をそれぞれ前記コントローラにつないで該
コントローラからの指示により、前記各注入管の引上管
理を行うようにしたことを特徴とする。 Further, in order to achieve the above-mentioned object, according to the injection apparatus of the present invention , in each of the injection methods described in claim 8,
Each tube is equipped with an injection tube lifting mechanism,
By connecting the inlet pipe lifting mechanism to each of the controllers,
Pull-up pipe for each injection pipe according to instructions from the controller
It is characterized by doing the reason.
【００１５】[0015]
【発明の実施の形態】以下、本発明を添付図面を用いて
詳述する。DETAILED DESCRIPTION OF THE INVENTION The present invention will be described below in detail with reference to the accompanying drawings.
【００１６】図１および図２はいずれも本発明にかかる
注入材の連続注入装置の一具体例の説明図である。図１
および図２において破線で囲まれた領域Ｘは注入系統、
Ｙは供給系統である。Ｎ1 、Ｎ2 ・・・ Ｎi 、Ｎn は注入
孔であって、注入対象地盤１に複数設けられる。1 and 2 are explanatory views of a concrete example of a continuous injection device for an injection material according to the present invention. Figure 1
The region X surrounded by a broken line in FIG. 2 is the injection system,
Y is a supply system. N 1 , N 2, ... N i , N n are injection holes, and a plurality of them are provided in the injection target ground 1.
【００１７】これら注入孔Ｎ1 、Ｎ2 ・・・ Ｎi 、Ｎn は
それぞれバルブＶ1 、Ｖ2 ・・・ Ｖi、Ｖn を介して、か
つ送液管２を通して供給系統Ｙの注入材貯蔵槽Ｔと連結
され、貯蔵槽Ｔから注入材が送液管２を通じて各注入孔
Ｎ1 、Ｎ2 ・・・ Ｎi 、Ｎn に注入される。These injection holes N 1 , N 2 ... N i , N n are injected into the supply system Y through the valves V 1 , V 2 ... V i , V n and through the liquid delivery pipe 2, respectively. It is connected to the material storage tank T, and the injection material is injected from the storage tank T into the injection holes N 1 , N 2, ... N i , N n through the liquid feeding pipe 2.
【００１８】送液管２には注入ポンプＰが配置され、か
つ、バルブＶ1 、Ｖ2 ・・・ Ｖi 、Ｖn は注入ポンプＰよ
りも下流であって、注入孔Ｎと送液管２との間にそれぞ
れ配設される。そして、貯蔵槽Ｔ中の注入材は注入ポン
プＰの作動およびバルブＶの開閉管理により送液管２を
通して所望の単一または複数の注入孔Ｎに選択的に、か
つ連続的に注入される。前述のバルブＶは例えば、電磁
バルブ、エアバルブ等である。なお、後述のように、本
発明では、注入材を複数の注入孔の任意の注入深度（土
層）において、バルブＶの開閉管理により各土層毎に連
続的に注入することも可能である。An injection pump P is arranged in the liquid feed pipe 2 , and valves V 1 , V 2 ... V i , V n are located downstream of the injection pump P, and an injection hole N and a liquid feed pipe are provided. And 2 respectively. Then, the injection material in the storage tank T is selectively and continuously injected into a desired single or plural injection holes N through the liquid delivery pipe 2 by the operation of the injection pump P and the opening / closing control of the valve V. The above-mentioned valve V is, for example, an electromagnetic valve, an air valve, or the like. As will be described later, in the present invention, it is possible to continuously inject the injection material into each soil layer by controlling the opening / closing of the valve V at any injection depth (soil layer) of the plurality of injection holes. .
【００１９】送液管２は図１に示されるように一本、あ
るいは図２に示されるように二本有する。送液管が二本
の場合は、図２に示されるように、これら二本の送液管
２、２はバルブＶを介して各注入孔Ｎに連結される。こ
のうちの一本の送液管２は主剤注入材（Ａ液）を装填し
た貯蔵タンクＴＡと連結され、他の一本の送液管２は反
応剤注入材（Ｂ液）を装填した貯蔵タンクＴＢと連結さ
れ、それぞれの送液管２、２に配設された注入ポンプＰ
Ａ、ＰＢの作動により、Ａ液である主剤注入材およびＢ
液である反応剤注入液をそれぞれの送液管２、２を通
し、かつ各バルブＶを通して各注入孔Ｎに導入し、ここ
で両液を合流して地盤中に注入する。The liquid supply pipe 2 has one as shown in FIG. 1 or two as shown in FIG. When there are two liquid feed pipes, these two liquid feed pipes 2, 2 are connected to each injection hole N via a valve V, as shown in FIG. One of the liquid feed pipes 2 is connected to the storage tank TA loaded with the main agent injection material (liquid A), and the other one liquid feed pipe 2 is stored with the reactant injection material (liquid B) loaded. Infusion pump P connected to tank TB and arranged in each of liquid transfer pipes 2 and 2.
By the operation of A and PB, the main agent injection material that is liquid A and B
The reactant injection liquid, which is a liquid, is introduced into each injection hole N through the respective liquid supply pipes 2 and 2 and each valve V, and both liquids are merged and injected into the ground.
【００２０】前記ＡＢ合流液は、例えば固結時間の異な
る、あるいは浸透性の異なる注入材である。このうち、
固結時間の短い方の注入材または浸透性の悪い懸濁型注
入材は複数の注入孔Ｎのうちの一部分の注入孔Ｎから注
入され、固結時間の長い方の注入材または浸透性のよい
注入材はこれらと同一の注入孔から、または他の一部分
の注入孔Ｎから注入される。あるいは全注入孔Ｎから固
結時間の短い方の注入材または浸透性の悪い懸濁型注入
材が所定量注入されてのち、任意の注入孔から固結時間
の長い方の注入材または浸透性のよい注入材が注入され
てもよく、これら工程を各土層毎にくり返すことができ
る。上述の固結時間の短い方の注入材または浸透性の悪
い懸濁型注入材は地盤中で固結されて、パッカー効果を
呈し、固結時間の長い方の注入材は土粒子間を充填固結
する。The AB confluent liquid is, for example, an injection material having a different setting time or a different permeability. this house,
The injection material with the shorter setting time or the suspension type injection material with poor permeability is injected from a part of the plurality of injection holes N, and the injection material with the longer setting time or the permeability material. Good injection material is injected through these same injection holes or through the injection hole N in another part. Alternatively, after injecting a predetermined amount of the injection material having a shorter setting time or the suspension-type injection material having poor permeability from all the injection holes N, the injection material having a longer setting time or the permeability having a longer setting time is injected from any injection hole. A good pouring material may be injected, and these steps can be repeated for each soil layer. The above-mentioned injecting material with a shorter setting time or suspension type injecting material with poor permeability shows a packer effect by being solidified in the ground, and the injecting material with a longer setting time fills the space between soil particles. To solidify.
【００２１】上述のＡＢ合流液はこれらの配合や流量比
率を変化させることにより、固結時間の短い方の注入材
あるいは浸透性の悪い懸濁液としてまず地盤に注入さ
れ、続いて、その後、ゲル化時間の長い方の注入材ある
いは浸透性のよい注入材として注入される。この場合、
ある特定の深度において、固結時間の短い方の注入材あ
るいは浸透性の悪い懸濁液を複数の注入孔から連続的に
注入したのち、固結時間の長い方の注入材あるいは浸透
性のよい注入材を連続的に注入し、これにより所定の土
層の改良を終了してから次の深度に移して同様に繰り返
して注入することもできる。The AB confluent described above is first injected into the ground as an injection material having a shorter setting time or a suspension having poor permeability by changing the composition and the flow rate ratio thereof, and then, thereafter, It is injected as an injection material having a longer gelation time or an injection material having high permeability. in this case,
At a certain depth, the injection material with the shorter setting time or the suspension with poor permeability is injected continuously from multiple injection holes, and then the injection material with the longer setting time or the better permeability It is also possible to continuously inject the injecting material, thereby completing the improvement of a predetermined soil layer, moving to the next depth, and injecting the same repeatedly.
【００２２】なお、従来のように、単一の注入孔からの
注入では、すなわち、単一の注入孔から固結時間の短い
方の注入材あるいは浸透性の悪い懸濁型注入材を注入し
たのち、固結時間の長い方の注入材あるいは浸透性のよ
い注入材を注入する工程を各注入孔毎に繰り返す注入で
は、隣接する注入孔付近は固結時間の短い方の注入材あ
るいは浸透性の悪い懸濁型注入材で注入されておらず、
このため、その後注入される固結時間の長い方の注入材
あるいは浸透性のよい注入材は隣接領域にまで浸透して
後、粗い部分から逸出してしまう恐れがある。As in the prior art, in the injection from a single injection hole, that is, an injection material having a shorter setting time or a suspension injection material having poor permeability is injected from the single injection hole. After that, in the injection that repeats the process of injecting the injection material with the longer setting time or the injection material with good permeability for each injection hole, in the vicinity of the adjacent injection holes, the injection material with the shorter setting time or the permeability It is not injected with a bad suspension type injection material,
For this reason, there is a possibility that the injection material having a longer setting time or the injection material having high permeability, which is injected thereafter, permeates to the adjacent region and then escapes from the rough portion.
【００２３】これに対して、本発明では、バルブの開閉
管理により所定の深度における隣接する注入孔に選択的
に、かつ連続的に固結時間の短い方の注入材あるいは浸
透性の悪い懸濁型注入材を填充する。この結果、その土
層の水平方向全体をパッカー効果によって拘束せしめた
後、次いで、固結時間の長い方の注入材あるいは浸透性
のよい注入材を連続的に浸透固結せしめるから、所定の
土層全体を注入材の逸脱なしに均質に固結することがで
きる。On the other hand, in the present invention, by controlling the opening / closing of the valve, the injection material having a shorter setting time or the suspension having poor permeability is selectively and continuously supplied to the adjacent injection holes at a predetermined depth. Fill with mold injection material. As a result, after the soil layer is restrained in its entire horizontal direction by the packer effect, then the infusion material with the longer consolidation time or the infusion material with good permeability is continuously infiltrated and consolidated, so The entire layer can be consolidated homogeneously without deviation of the casting material.
【００２４】すなわち、本発明は沖積層のように、透水
係数が垂直方向よりも水平方向に大きいという性質を巧
妙に利用して、土層毎に効率よく固結しながら、全体を
均質に固化せしめることが可能である。That is, the present invention cleverly utilizes the property that the hydraulic conductivity is larger in the horizontal direction than in the vertical direction as in the case of alluvial deposits, and efficiently solidifies each soil layer while solidifying the whole uniformly. It is possible to blame.
【００２５】なお、図１および図２の供給系統Ｙはさら
に、注入ポンプＰと注入孔Ｎとの間、あるいは注入ポン
プＰＡ、ＰＢと注入孔Ｎとの間の送液管２、２に流量
計、タイマー等の流量測定装置Ｆ、あるいはＦＡ、ＦＢ
を配設してもよい。The supply system Y shown in FIGS. 1 and 2 further has a flow rate in the liquid feed pipes 2 and 2 between the injection pump P and the injection hole N, or between the injection pumps PA and PB and the injection hole N. Flow rate measuring device F such as meter, timer, or FA, FB
May be provided.
【００２６】さらに、上述の本発明において、図１およ
び図２に示されるとおり、コントローラ３を設置するこ
ともでき、このコントローラ３と各バルブＶがそれぞれ
連絡され、コントローラ３からの指示によりバルブＶの
開閉を管理して注入孔Ｎの選定管理を行う。さらに、コ
ントローラ３と注入ポンプＰないしはＰＡ、ＰＢが連絡
され、コントローラ３からの指示により注入ポンプＰな
いしはＰＡ、ＰＢの作動を管理して注入材の送液管理を
行ってもよい。さらにまた、必要に応じてコントローラ
３と流量測定装置ＦないしはＦＡ、ＦＢが連絡され、流
量測定装置ＰないしはＦＡ、ＦＢからの注入材の流量測
定情報をコントローラ３に伝達して流量管理を行い、所
定量の注入が行われた後にコントローラ３からの指示に
よりバルブを閉束すると同時に、他の注入孔のバルブを
開き、次の注入孔への注入に連続的に移向せしめること
もできる。Further, in the above-mentioned present invention, as shown in FIGS. 1 and 2, the controller 3 can be installed, and the controller 3 and each valve V are communicated with each other, and the valve V is instructed by the controller 3. The injection hole N is selected and managed by controlling the opening and closing of. Further, the controller 3 and the infusion pump P or PA, PB may be communicated with each other, and the operation of the infusion pump P or PA, PB may be managed according to an instruction from the controller 3 to manage the liquid feeding of the infusion material. Furthermore, if necessary, the controller 3 and the flow rate measuring devices F or FA, FB are communicated with each other, and the flow rate management information is transmitted by transmitting the flow rate measuring information of the injection material from the flow rate measuring devices P, FA, FB to the controller 3. It is also possible to close the valves in accordance with an instruction from the controller 3 after a predetermined amount of injection has been performed, and at the same time open the valves of the other injection holes to continuously move to the injection into the next injection hole.
【００２７】さらに、本発明は地盤沈下の状態、すなわ
ち、地盤の変位状態を後述するように変位測定装置で計
測し、この変位の情報を図１、２に示されるようにコン
トローラ３に伝達して変位管理する。すなわち、コント
ローラ３には、注入系統Ｘからの注入状況の情報と、変
位測定装置からの変位状況の情報とが伝達され、これら
情報にもとづいて注入すべき注入孔を選定し、注入を行
う。このことは図４〜７を用いて具体的に後述する。Further, according to the present invention, the state of ground subsidence, that is, the state of ground displacement is measured by a displacement measuring device as will be described later, and this displacement information is transmitted to the controller 3 as shown in FIGS. Displacement management. That is, the information on the injection status from the injection system X and the information on the displacement status from the displacement measuring device are transmitted to the controller 3, and the injection hole to be injected is selected based on these information to perform the injection. This will be specifically described later with reference to FIGS.
【００２８】さらにまた、本発明では、図１および２に
示されるように、各注入孔Ｎに図示しないがそれぞれ注
入管が挿入され、これら注入管はそれぞれ、送液管２、
２を介して注入材貯蔵槽ＴないしはＴＡ、ＴＢと連結さ
れる。しかも、これら注入管にはそれぞれ注入管引上機
構Ｄ1 、Ｄ2 ・・・ Ｄi 、Ｄn が備えられ、これら注入管
引上機構Ｄをそれぞれコントローラ３につないで、この
コントローラ３からの指示により各注入管の引上管理を
行うこともできる。Further, in the present invention, as shown in FIGS. 1 and 2, although not shown in the drawings, each injection pipe is inserted into each injection hole N, and these injection pipes are respectively connected to the liquid delivery pipes 2, 2.
It is connected via 2 to the injection material storage tanks T or TA and TB. Moreover, these injection pipes are respectively provided with injection pipe pull-up mechanisms D 1 , D 2, ... D i , D n . These injection pipe pull-up mechanisms D are connected to the controller 3 respectively, and the injection pipe pull-up mechanism D It is also possible to manage pulling up of each injection tube according to instructions.
【００２９】具体的には、まず、所定の注入孔に所定量
の注入材が注入されると、バルブが閉束してその注入孔
への注入が停止される。次いで、この停止時点に先行し
て所定の注入孔の注入管が所定深度に引き上げられ、か
つバルブが開いて、この注入孔に注入材が連続的に注入
され、このような工程が連続して繰り返される。このよ
うな連続工程をあらかじめコントローラ３に入力してお
けば、大規模な工事の際に、注入材を自動的に、かつ連
続的に、ほとんど無人で注入することが可能になる。Specifically, first, when a predetermined amount of injection material is injected into a predetermined injection hole, the valve is closed and injection into the injection hole is stopped. Then, prior to this stop time, the injection pipe of the predetermined injection hole is pulled up to a predetermined depth, and the valve is opened to continuously inject the injection material into the injection hole, and such a process is continuously performed. Repeated. If such a continuous process is input to the controller 3 in advance, it becomes possible to inject the injection material automatically and continuously almost unattended during large-scale construction.
【００３０】なお、上述の注入管は鋼管のみならず、ホ
ースのような軟質なものであってもよい。この場合、ホ
ースは注入管引上機構で巻き上げながら引き上げること
ができ、人力を使用しないで機械化が容易となる。The above-mentioned injection pipe is not limited to a steel pipe but may be a soft one such as a hose. In this case, the hose can be pulled up while being rolled up by the injection pipe pulling up mechanism, which facilitates mechanization without using human power.
【００３１】図３は本発明にかかる注入材の連続注入装
置の他の具体例の説明図である。これを詳述すると、送
液管２、２を流れるＡ液およびＡ′液は合流されること
なく、それぞれ独立して注入孔（Ｎ1 、Ｎ′1 ）、（Ｎ
2 、Ｎ′2 ）・・・ （Ｎn Ｎ′n ）に注入される。Ａ液は
例えば浸透性はよくないが、高強度を呈する注入材であ
って、注入材貯蔵槽ＴＡ、ＴＢからの注入材を混合し、
ポンプＰの作動により送液管２を通り、かつバルブＶを
通って注入孔Ｎに注入される。また、Ａ′液は例えば浸
透性のよい注入材であって、注入材貯蔵槽ＴＡ′、Ｔ
Ｂ′からの注入材を混合し、ポンプＰ′の作動により送
液管２を通り、かつバルブＶ′を通って注入孔Ｎ′に注
入される。図３中、Ｆ、Ｆ′は流量測定装置である。FIG. 3 is an explanatory view of another concrete example of the continuous injecting device for injecting material according to the present invention. This will be described in detail. The liquids A and A ′ flowing through the liquid supply pipes 2 and 2 are not merged, and the injection holes (N 1 , N ′ 1 ) and (N 1
2, N is injected into '2) ··· (N n N ' n). The liquid A is, for example, an injectable material exhibiting high strength although it has poor permeability, and is mixed with injectable materials from the injectant storage tanks TA and TB.
When the pump P is operated, it is injected into the injection hole N through the liquid delivery pipe 2 and the valve V. The liquid A'is, for example, an injectable material having high permeability, and the injectant storage tanks TA ', T'
The injection material from B'is mixed and injected into the injection hole N'through the liquid delivery pipe 2 and the valve V'by the operation of the pump P '. In FIG. 3, F and F ′ are flow rate measuring devices.
【００３２】前記注入孔Ｎ、Ｎ′への注入は図示しない
が、各注入孔Ｎ、Ｎ′にそれぞれ、注入管引上機構Ｄ、
Ｄ′の備えられた注入管を挿入し、これら注入管をそれ
ぞれ、送液管２、２を介して注入材貯蔵槽Ｔと連結する
ことにより、各注入管を通して行われる。The injection into the injection holes N and N'is not shown, but the injection pipe pulling mechanisms D and N are respectively inserted into the injection holes N and N '.
It is performed through each injection pipe by inserting the injection pipe provided with D'and connecting these injection pipes with the injection material storage tank T via the liquid feeding pipes 2 and 2, respectively.
【００３３】しかも、図３において、注入ポンプＰ、
Ｐ′、各バルブＶ、Ｖ′、流量測定装置Ｆ、Ｆ′、およ
び注入管引上機構Ｄ、Ｄ′はそれぞれコントローラ３と
つながれ、このコントローラ３からの指示により、それ
ぞれ注入ポンプＰ、Ｐ′の作動を管理して注入材の送液
管理を行い、各バルブＶ、Ｖ′の開閉を管理して注入孔
Ｎ、Ｎ′の選定管理を行い、流量測定装置Ｆ、Ｆ′を管
理して注入材の流量管理を行い、さらに注入管引上機構
Ｄ、Ｄ′を管理して注入管引上管理を行い、この結果、
貯蔵槽Ｔ中の注入材を送液管２、２を通して所望の任意
の注入孔Ｎ、Ｎ′に連続して注入する。なお、変位測定
装置からの変位状況の情報にもとづく変位管理は前述図
１、２の場合と同様である。Moreover, in FIG. 3, the injection pump P,
P ', the valves V, V', the flow rate measuring devices F, F ', and the injection pipe lifting mechanisms D, D'are connected to the controller 3, respectively, and the injection pumps P, P'are instructed by the controller 3. Of the injection material is controlled to control the operation of the injection material, the opening and closing of the valves V and V'to control the selection of the injection holes N and N ', and the flow rate measuring devices F and F'. The flow rate of the injection material is controlled, and the injection pipe pull-up mechanisms D and D'are also managed to perform the injection pipe pull-up control.
The injection material in the storage tank T is continuously injected into desired desired injection holes N and N'through the liquid supply pipes 2 and 2. The displacement management based on the displacement status information from the displacement measuring device is the same as in the case of FIGS.
【００３４】ここで、シールドトンネルの進行に基因し
て地盤沈下を起こした道路を、注入材の注入により復元
する例を図４および図５を用いて説明する。図４は道路
下方のシールドトンネルの進行状態および変位測定状態
を表した説明図、図５は図４の平面図である。Here, an example of restoring a road that has caused ground subsidence due to the progress of a shield tunnel by injecting an injecting material will be described with reference to FIGS. 4 and 5. FIG. 4 is an explanatory view showing a traveling state and a displacement measurement state of the shield tunnel below the road, and FIG. 5 is a plan view of FIG.
【００３５】図４に示されるように、道路21の地下下方
にシールドトンネル22が掘削進行されているものと仮定
する。この場合、道路21はシールドトンネル22の進行に
ともなって地盤沈下を起こすことが予想される。As shown in FIG. 4, it is assumed that a shield tunnel 22 is being excavated under the road 21. In this case, the road 21 is expected to cause ground subsidence as the shield tunnel 22 advances.
【００３６】この地盤沈下の程度を測定するために、図
４および図５に示されるように、沈下した、あるいは沈
下の予想される道路２１に測点Ｍ1 、Ｍi 、Ｍi+1 、す
なわち、Ｍ1■n を設定する。さらに、これら測点Ｍ
1■n における変位を計測する変位測定装置Ｏを道路21
の近傍に設定する。In order to measure the degree of this ground subsidence, as shown in FIGS. 4 and 5, on the road 21 which has been or is expected to be submerged, measuring points M 1 , M i , M i + 1 , That is, M 1 n is set. Furthermore, these measuring points M
Displacement measuring device O that measures the displacement at 1 n is installed on the road 21
Set near.
【００３７】変位測定装置Ｏからの変位の情報は図１お
よび図２に示されるようにコントローラ３に伝達され
る。（後述の図３も同様である。）この結果、注入系統
Ｘからの注入材の注入状況の情報と、変位測定装置Ｏか
らの復元状況に関する情報がコントローラ３に伝えられ
ることになり、これら情報に基づいて注入すべき注入孔
を図４、５の注入孔Ｎ1 、Ｎ2 、Ｎ3 ・・・Ｎi 、Ｎ
i+1 、すなわち、Ｎ1■1nから選定し、図１、２のコン
トローラから注入系統Ｘ、さらには供給系統Ｙに指示し
て図４、５の注入孔Ｎ1■1nに所定の注入を行わせる。Displacement information from the displacement measuring device O is transmitted to the controller 3 as shown in FIGS. (The same applies to FIG. 3, which will be described later.) As a result, the information on the injection state of the injection material from the injection system X and the information on the restoration state from the displacement measuring device O are transmitted to the controller 3, and these information items are transmitted. The injection holes to be injected on the basis of the injection holes N 1 , N 2 , N 3 ... Ni , N of FIGS.
i + 1 , that is, N 1 1n is selected, and the controller of FIGS. 1 and 2 instructs the injection system X and further the supply system Y to perform a predetermined injection into the injection hole N 1 1n of FIGS. Let it be done.
【００３８】変位測定装置Ｏからの復元状況に関する情
報は図６に示されるグラフ、すなわち、注入孔Ｎi にお
ける注入材の注入量Ｑと測点Ｍi 点における道路の変位
Δｈとの関係を表したグラフにより得られる。The information regarding the state of restoration from the displacement measuring device O is represented by the graph shown in FIG. 6, that is, the relationship between the injection amount Q of the injection material in the injection hole N i and the road displacement Δh at the measurement point M i. It is obtained by the graph.
【００３９】さらに、測点Ｍi 点における変位は図７に
示されるように、各Ｍi の隆起結果が目標レベル23に達
するように注入管理することにより解消され、変位を復
元して地注入目的を達成する。Further, as shown in FIG. 7, the displacement at the measurement point M i is eliminated by managing the injection so that the uplifting result of each M i reaches the target level 23, and the displacement is restored to the ground injection. Achieve the purpose.
【００４０】以上のとおり、地盤沈下の復元状態を道路
を例示して説明したが、道路に限らず、基礎や建造物で
あっても同様であり、さらに隆起による復元工事であっ
ても、また、隆起しないように地盤を強化する場合であ
っても同様である。As described above, the restoration state of ground subsidence has been described by exemplifying the road, but the same applies not only to the road but also to a foundation or a building, and even if it is a restoration work by uplift, The same applies when strengthening the ground so that it does not rise.
【００４１】以上を総括すると、例えば、コントローラ
３の指示により、バルブＶ1 のみが開かれ、他が閉じた
状態であれば、注入材は注入孔Ｎ1 のみに注入される。
この注入が所定量行われた時点で、流量測定装置Ｆない
しはＦＡ、ＦＢからの情報によりバルブＶ2 が開き、他
が閉じれば、注入材は連続してバルブＶ2 を通って注入
孔Ｎ2 に注入される。上述のようにコントローラ３は注
入系統Ｘおよび供給系統Ｙから注入材の注入状況の情報
を得、これにより注入孔Ｎの選定管理、注入材の送液管
理を行うことができ、さらに、注入管の引上管理を行う
こともできる。To summarize the above, for example, when only the valve V 1 is opened and the others are closed according to an instruction from the controller 3, the injection material is injected only into the injection hole N 1 .
At the time when this injection is performed by a predetermined amount, the valve V 2 is opened according to the information from the flow rate measuring device F or FA, FB, and if the others are closed, the injection material continuously passes through the valve V 2 and the injection hole N 2 is injected. Is injected into. As described above, the controller 3 obtains information on the injection status of the injection material from the injection system X and the supply system Y, and can thereby perform the selection management of the injection hole N and the liquid delivery management of the injection material. It is also possible to manage the pulling up.
【００４２】さらに総括すると、一般に、ルーズな砂地
盤や粘性土地盤は掘削や荷重によって容易に変位しやす
い。この変位防止のために、該地盤に注入材を注入して
も注入材は逸脱してしまい、所定の地盤領域を確実に改
良することが困難である。To further summarize, in general, loose sand and cohesive ground are easily displaced by excavation and load. In order to prevent this displacement, even if the injection material is injected into the ground, the injection material deviates and it is difficult to surely improve a predetermined ground area.
【００４３】このような地盤の改良には、注入材として
懸濁型グラウトや瞬結グラウトを用い、割裂注入を行っ
て強度の高い固化層をこまかく形成することが有効であ
るが、従来では局部的に地盤隆起を生じる等の欠点が発
生し、良好な管理のもとに注入を行うことが困難であっ
た。In order to improve the ground as described above, it is effective to use a suspension type grout or an instantaneous setting grout as an injection material and perform split injection to form a solidified layer having high strength. However, it has been difficult to perform injection under good control because of disadvantages such as ground uplift.
【００４４】そこで、掘削等による変位を防止するため
には、瞬結グラウトや懸濁型グラウトを地盤隆起を起こ
さないように圧入あるいは割裂注入し、その上下のルー
ズな土や粘性土を圧密するのが有効である。Therefore, in order to prevent displacement due to excavation or the like, instantaneous setting grout or suspension type grout is press-fitted or split-injected so as not to cause ground uplift, and loose soil or cohesive soil above and below is compacted. Is effective.
【００４５】本発明は変位の生じやすい地盤に複数の変
位測点を設け、この変位量にもとづいて所望の注入管、
注入ステージを選定し、地盤の隆起が生じない程度にグ
ラウトを圧入の後、バルブを切り換えて連続的に他の注
入管、注入ステージに移向する注入工法および注入装置
に係わるものである。In the present invention, a plurality of displacement measuring points are provided on the ground where displacement is likely to occur, and a desired injection pipe,
The present invention relates to an injection method and an injection device in which an injection stage is selected, grout is press-fitted to such an extent that the ground is not raised, and then a valve is switched to continuously move to another injection pipe or injection stage.
【００４６】上述の本発明では少量の注入材（グラウ
ト）を填充するため、地盤の隆起が防止され、かつ注入
材の逸脱も防止される。このような工程を変位を把握し
ながら繰り返すことにより、固化の終了した個所に再び
注入が行われ、この結果、地盤は密実に改良されて変位
の少ない地盤となる。また、変位のあとで、上述の工程
を繰り返すことにより、地盤の均等な隆起が達成され、
変位された地盤の復元が可能となる。In the present invention described above, since a small amount of the injection material (grout) is filled, the ground is prevented from rising and the injection material is prevented from deviating. By repeating such a process while grasping the displacement, the injection is performed again at the portion where the solidification is completed, and as a result, the ground is steadily improved to become the ground with less displacement. Also, after the displacement, by repeating the above-mentioned steps, a uniform uplift of the ground is achieved,
The displaced ground can be restored.
【００４７】なお、上述において、ゲル化時間の短い方
の注入材を注入するに先立って、ゲル化時間の長い方の
注入材を対象地盤に注入してあらかじめ地盤のゆるみ部
分や土粒子間の前記ゲル化時間の長い方の注入材で填充
固結して該地盤を拘束しておけば、その後、ゲル化時間
の短い方の注入材を注入する際に、周辺地盤の反力作用
によって地盤を効果的に隆起させることができる。In the above description, before injecting the injecting material having the shorter gelation time, the injecting material having the longer gelation time is injected into the target ground, and the loose portion of the ground or between the soil particles is preliminarily injected. If the ground is restrained by filling and consolidating with the injection material having the longer gelation time, then when the injection material having the shorter gelation time is injected, the ground is caused by the reaction force of the surrounding ground. Can be effectively raised.
【００４８】また、本発明では、ゲル化時間の短い方の
注入材には上述のように、地盤（または建造物）を隆起
させる機能をもたせる一方、ゲル化時間の長い方の注入
材には、地盤中に注入して土粒子間に浸透せしめ、地盤
の液状化防止機能を持たせることもできる。In the present invention, the injection material having the shorter gelation time has the function of raising the ground (or the building) as described above, while the injection material having the longer gelation time has the function of elevating the ground. It is also possible to have a function of preventing liquefaction of the ground by injecting it into the ground so that it penetrates into the soil particles.
【００４９】これにより、本発明は上述の復元工事とと
もに、将来に備えた地震による液状化防止工事をも兼ね
備えることができる。この場合、ゲル化時間の長い方の
注入材はゲル化時間の短い方の注入材に先立って注入さ
れても、あるいは後から注入されてもかまわない。As a result, the present invention can be combined with the above-mentioned restoration work and the liquefaction prevention work due to an earthquake in the future. In this case, the injection material having the longer gelation time may be injected before or after the injection material having the shorter gelation time.
【００５０】図８は注入管として注入孔内に向いた吐出
口を有する外管と、この外管内に挿入されたダブルパッ
カーを有する内管とからなる、いわゆる二重管ダブルパ
ッカーを用いた本発明にかかる実際の注入例の断面図で
ある。図８において、まず、地盤１の注入孔Ｎ1 、Ｎ2
・・・ Ｎn に外管４、４・・・ ４を挿入する。FIG. 8 shows a book using a so-called double-tube double packer, which is composed of an outer tube having a discharge port facing the inside of the injection hole as an injection tube and an inner tube having a double packer inserted in the outer tube. It is sectional drawing of the actual injection example concerning invention. In FIG. 8, first, the injection holes N 1 and N 2 of the ground 1
Inserting the outer tube 4, 4 ... 4 ... N n.
【００５１】これら各外管４は長さ方向に間隔をあけて
配置された複数の吐出口５、５・・・５を有しており、か
つ、これら吐出口５、５・・・ ５はそれぞれ、マンシエッ
トチューブ等の幅30〜25cmのゴムスリーブ６、６・・・ ６
で覆われている。Each of these outer tubes 4 has a plurality of discharge ports 5, 5 ... 5 arranged at intervals in the lengthwise direction, and these discharge ports 5, 5, ... Rubber sleeves 6 to 6 with a width of 30 to 25 cm, such as the Mansiette tube 6
Is covered with.
【００５２】これら各外管４、４・・・ ４の内部には、次
いでバルブＶ1 、Ｖ2 ・・・ Ｖn を介して送液管２に連結
された内管７、７・・・ ７が挿入される。Inside each of these outer pipes 4, 4, ... 4, Next, inner pipes 7, 7, ... Connected to the liquid delivery pipe 2 via valves V 1 , V 2, ... V n. 7 is inserted.
【００５３】さらに、内管７の先端部分の側壁には、吐
出口８が穿設される。この吐出口８の上方の内管外壁周
面には、ダブルパッカー９が装着されるとともに、下方
の内管先端の開口10には閉塞板11が装着されて、開口10
が閉塞される。しかも、これらパッカー９および閉塞板
11はいずれもそれぞれの自由端12および13で外管４の内
壁14と摺動自在に接触するように装着され、この結果、
吐出口８は上方のパッカー９および下方の閉塞板11には
さまれた、外管４の吐出口５を有する独立した空間15内
に位置することになり、二重管ダブルパッカーＡを構成
する。Further, a discharge port 8 is bored in the side wall of the tip portion of the inner pipe 7. A double packer 9 is attached to the outer peripheral surface of the inner pipe above the discharge port 8, and a closing plate 11 is attached to the opening 10 at the lower end of the inner pipe.
Is blocked. Moreover, the packer 9 and the closing plate
Each of the 11 is mounted so as to slidably contact the inner wall 14 of the outer tube 4 at the respective free ends 12 and 13, and as a result,
The discharge port 8 is located in an independent space 15 having the discharge port 5 of the outer tube 4 between the packer 9 on the upper side and the closing plate 11 on the lower side, and constitutes the double-tube double packer A. .
【００５４】なお、上述のパッカー機能は内管末端を閉
束し、吐出口８を上下にはさむ二つのダブルパッカーを
装着した構成のものであってもよい。The packer function described above may be a structure in which the inner tube end is closed and two double packers for sandwiching the discharge port 8 are attached.
【００５５】送液管２は図８では図示しないが、図１〜
３に示されるように、注入材貯蔵槽Ｔに連結されてお
り、この貯蔵槽Ｔ中の注入材は送液管２を通して内管７
に送液され、内管７の吐出口８から空間15を経て、次い
で、外管４の吐出口５を経て、ゴムスリーブ６を押し開
け、地盤１中に注入される。Although the liquid feeding pipe 2 is not shown in FIG.
As shown in FIG. 3, the injection material is connected to the injection material storage tank T, and the injection material in this storage tank T passes through the liquid delivery pipe 2 and the inner pipe 7
Then, the rubber sleeve 6 is pushed open through the discharge port 8 of the inner pipe 7 through the space 15 and then through the discharge port 5 of the outer pipe 4 and injected into the ground 1.
【００５６】さらに、図８に示されるように、内管７を
外管４内で下方から上方に移動して、パッカー９および
閉塞板11を外管４の内壁14を摺動せしめ、空間15を上段
の吐出口５の位置まで引き上げ、この吐出口５から上述
と同様に注入材を地盤中に注入する。Further, as shown in FIG. 8, the inner pipe 7 is moved from the lower side to the upper side in the outer pipe 4 so that the packer 9 and the closing plate 11 are slid on the inner wall 14 of the outer pipe 4 and the space 15 is formed. Is pulled up to the position of the upper discharge port 5, and the injection material is injected from this discharge port 5 into the ground in the same manner as described above.
【００５７】しかも、図８において、図示しないが、注
入ポンプＰ、流量測定装置Ｆ、さらには、各バルブＶ、
注入管引上機構Ｄはそれぞれ図１〜３と同様にコントロ
ーラ３とつながれ、前述と同様に各管理が行われて貯蔵
槽Ｔ中の注入材を送液管２を通して所望の任意の注入孔
Ｎに、二重管ダブルパッカーＡから連続的に注入するこ
ともできる。In addition, although not shown in FIG. 8, the injection pump P, the flow rate measuring device F, the valves V,
The injection pipe pull-up mechanism D is connected to the controller 3 similarly to FIGS. 1 to 3, and each control is performed in the same manner as described above to allow the injection material in the storage tank T to pass through the liquid supply pipe 2 to an arbitrary desired injection hole N. It is also possible to continuously inject from the double-tube double packer A.
【００５８】ここで、上述の注入材が注入される所定の
深度、すなわち、外管４の吐出口５、５・・・ ５の位置
を、便宜上、それぞれ注入孔Ｎ1 の場合、上方からＸ
1-1 、Ｘ1-2 ・・・ Ｘ1-i 、Ｘ1-n として表し、注入孔Ｎ
2 の場合、同様にして、Ｘ2-1 、Ｘ2-2 ・・・ Ｘ2-i 、Ｘ
2-n として表し、注入孔Ｎi の場合、Ｘi-1 、Ｘi-2 ・・
・Ｘi-i 、Ｘi-n として表し、注入孔Ｎn の場合、Ｘ
n-1 、Ｘn-2 ・・・ Ｘn-i 、Ｘn-n として表す。[0058] Here, the predetermined depth injection material described above is injected, i.e., X position of the discharge port 5, 5 5 of the outer tube 4, for convenience, the case, from above respectively injection hole N 1
1-1 , X 1-2 ... X 1-i , X 1-n , injection hole N
In the case of 2 , similarly, X 2-1 , X 2-2 ... X 2-i , X
2-n , and in the case of the injection hole N i , X i-1 , X i-2 ...
Represented by X ii and X in , and in the case of the injection hole N n , X
Represented as n-1 , X n-2 ... X ni , X nn .
【００５９】従来の地盤改良工法における注入では、注
入孔Ｎに注入する場合、各注入孔Ｎ1-n についてそれぞ
れ順次に注入を完了してゆく方法がとられている。これ
に対して、本発明では任意の注入孔Ｎに地盤の状況を計
測しながら、注入材を少量づつ、かつ連続的に注入が可
能である。In the injection in the conventional ground improvement method, when injecting into the injection hole N, a method of successively completing the injection in each injection hole N 1-n is adopted. On the other hand, in the present invention, it is possible to continuously inject the injection material little by little while measuring the condition of the ground in any injection hole N.
【００６０】例えば、注入孔Ｎ2 の吐出口位置Ｘ2-i に
所定量の注入材の注入を行った上で、バルブＶを作動
し、すなわち、例えば、バルブＶn のみを開いて他のバ
ルブを閉じ、吐出口位置Ｘn-i から所定量の注入材を注
入し、注入状況を把握しながら任意の吐出口から任意の
深度に連続的に注入材の注入が可能である。このように
して、本発明では、注入孔が変わるにもかかわらず、注
入材は連続的にかつ能率的に注入される。For example, after injecting a predetermined amount of the injecting material into the discharge port position X 2-i of the injection hole N 2 , the valve V is operated, that is, for example, only the valve V n is opened and another valve V n is opened. It is possible to close the valve, inject a predetermined amount of the injection material from the discharge port position X ni, and continuously inject the injection material from any discharge port to any depth while grasping the injection status. Thus, in the present invention, the injection material is continuously and efficiently injected despite the change of the injection hole.
【００６１】また、あらかじめ、注入孔Ｎから地盤中に
注入材を注入して地盤の均質化ならびに地盤の拘束化を
行っておいてから、上述のように、所定の注入孔Ｎから
所定の深度に地盤の状況を計測しながら注入材を注入し
て本発明を実施することもできる。しかも、土層が沖積
層の場合、透水係数が垂直方向よりも水平方向に大きい
という特性を利用しながら土層毎に水平に改良し、結果
として全体の注入地盤を均質に改良することもできる。In addition, after the injection material is injected into the ground through the injection hole N in advance to homogenize the ground and restrain the ground, as described above, the predetermined depth from the predetermined injection hole N is reached. The present invention can also be implemented by injecting an injection material while measuring the ground condition. Moreover, when the soil layer is alluvial, it is possible to improve horizontally for each soil layer while utilizing the characteristic that the hydraulic conductivity is larger in the horizontal direction than in the vertical direction, and as a result, the entire injection ground can be improved homogeneously. .
【００６２】例えば、二重管ダブルパッカーＸを用いる
場合、あらかじめ各注入孔Ｎ1-n から注入材としてセメ
ント−ベントナイトを注入し、地盤中の粗い部分を填充
して地盤を拘束した上で、適切な注入孔Ｎおよび吐出口
Ｘを選定し、ここに注入材として上述と同様なセメント
−ベントナイトを少量づつ注入し、この注入をバルブＶ
を切り換えながらくり返す。このとき、地盤は先の注入
材によってすでに固結され、拘束されているから、計測
によって注入状況を把握しながら、土層全体を効率よく
固結することができる。この場合、内管として二重管を
用いて瞬結グラウトを注入することもできるが、セメン
ト−ベントナイトのように固結が急速に行われないグラ
ウトであっても、効果的に地盤を固結させることができ
る。For example, when the double-tube double packer X is used, cement-bentonite is injected as an injection material from each injection hole N 1-n in advance, and the rough portion in the ground is filled to restrain the ground, Appropriate injection holes N and discharge ports X are selected, cement-bentonite similar to the above is injected little by little as an injection material, and this injection is performed by a valve V.
Repeat while switching. At this time, since the ground is already solidified and constrained by the previous pouring material, it is possible to efficiently solidify the entire soil layer while grasping the pouring condition by measurement. In this case, it is possible to inject the quick-setting grout using a double tube as the inner tube, but even if the grout does not rapidly solidify like cement-bentonite, it effectively solidifies the ground. Can be made.
【００６３】しかも、前記注入は地盤の注入状況を計測
しながら注入孔ならびに吐出口を連続的に変化させて行
うので、固結すべき個所を均等に、かつ、順次にくり返
して固結せしめ得る。Moreover, since the injection is performed by continuously changing the injection hole and the discharge port while measuring the injection condition of the ground, the points to be consolidated can be uniformly and sequentially repeated to be consolidated. .
【００６４】本発明に用いられる注入材として、地盤の
状況に応じて各種注入材が用いられる。例えば、水ガラ
ス、非アルカリ性シリカゾルまたはコロイダルシリカを
主成分とする主材と、セメント、スラグ、水ガラス、消
石灰またはアルカリ剤のいずれか一種または複数種を主
成分とする硬化剤を含むものである。As the injection material used in the present invention, various injection materials are used depending on the condition of the ground. For example, a main material containing water glass, non-alkaline silica sol or colloidal silica as a main component, and a curing agent containing one or more of cement, slag, water glass, slaked lime or an alkaline agent as a main component.
【００６５】さらに、上述の注入材はＡ液として、水ガ
ラスを有効成分とする配合液、非アルカリ性シリカゾル
またはコロイダルシリカのいずれか一種または複数種を
選定し、Ｂ液としてセメント、スラグまたは消石灰のい
ずれか一種または複数種を選定し、これらＡＢ液を合流
してなるゲル化時間が10秒以内の瞬結性注入材であって
もよい。Further, as the above-mentioned injecting material, one or more kinds of liquid A containing water glass as an active ingredient, non-alkaline silica sol or colloidal silica is selected as liquid A, and liquid B is made of cement, slag or slaked lime. It may be a quick-injection material having a gelation time of 10 seconds or less, which is formed by selecting any one kind or a plurality of kinds and joining these AB liquids.
【００６６】また、この注入材は前記主材と硬化剤の混
合によるゲル化時間が５秒以内の瞬結性注入材であって
もよい。The injection material may be an instantaneous injection material having a gel time of 5 seconds or less due to the mixing of the main material and the curing agent.
【００６７】さらに、この注入材は前記主材と硬化剤の
混合によるゲル化時間が10秒以内の瞬結性注入材と、こ
れよりもゲル化時間の長い注入材であることもでき、こ
の場合、固結時間の短い方の注入材を複数の注入孔のう
ち一部分の注入孔から注入し、他の一部分の注入孔から
は固結時間の長い方の注入材を注入する。Further, this injection material can be a quick-injection injection material having a gelation time of 10 seconds or less due to the mixing of the main material and the curing agent, and an injection material having a longer gelation time than this. In this case, the injection material having a shorter setting time is injected from a part of the injection holes of the plurality of injection holes, and the injection material having a longer setting time is injected from the other part of the injection holes.
【００６８】前記注入材はさらに、Ａ液として水ガラ
ス、非アルカリ性シリカゾル、またはコロイダルシリカ
を選定し、Ｂ液として、セメント、スラグまたは消石灰
の一種または複数種を選定し、前記Ａ液とＢ液を合流し
てなるゲル化時間の短い注入材、およびＡ液とＢ液の合
流液またはＢ液単独からなるゲル化時間の長い注入材の
組み合わせであってもよい。なお、前述注入材はさら
に、ゲル化調整剤として炭酸塩または重炭酸塩を含むこ
ともできる。Further, as the injection material, water glass, non-alkali silica sol or colloidal silica is selected as the solution A, and one or more kinds of cement, slag or slaked lime is selected as the solution B, and the solution A and the solution B are selected. It may be a combination of an injection material having a short gelation time obtained by merging with each other, and a combination solution of solution A and solution B or an injection material having a long gelation time composed of solution B alone. The injection material may further contain carbonate or bicarbonate as a gelling agent.
【００６９】さらに、上述の注入材において、硬化剤で
あるセメント、スラグまたは消石灰のうちの少なくとも
一種はブレーン比表面積が6000cm2/ｇ以上、あるいは平
均粒径が10μｍ以下であってもよい。Further, in the above-mentioned injection material, at least one of cement, slag and slaked lime which is a hardening agent may have a Blaine specific surface area of 6000 cm 2 / g or more, or an average particle diameter of 10 μm or less.
【００７０】なお、本発明では、上述の主材配合液ある
いは硬化剤配合液のいずれかに、炭酸ソーダ、重炭酸ソ
ーダ、重そう等のゲル化調整剤（ゲル化遅延剤）、苛性
アルカリ、アルミン酸ソーダ等のアルカリ剤等を加え
て、ゲル化時間を延長することもできる。ゲル化時間の
延長は消石灰の添加量を少なくしても達成される。In the present invention, a gelling agent (gelling retarder) such as sodium carbonate, sodium bicarbonate, and heavy soda, caustic alkali, and aluminate is added to either the above-mentioned main material blending solution or curing agent blending solution. The gelling time can be extended by adding an alkaline agent such as soda. The extension of the gelation time can be achieved even with a small amount of slaked lime added.
【００７１】さらに、本発明では、セメント、スラグ、
これらの微粒子からなる懸濁液、あるいはさらに、これ
に水ガラスアルミン酸ソーダ、苛性アルカリ、石灰等の
添加された懸濁液を、粗い粒子と細かい粒子に分級し、
まず、粗い粒子の懸濁液を先行して連続的に注入し、引
き続いて、細かい粒子の懸濁液を連続的に注入して地盤
を効果的に改良することもできる。Further, in the present invention, cement, slag,
A suspension consisting of these fine particles, or further, a suspension of water glass sodium aluminate, caustic alkali, lime, etc. added thereto is classified into coarse particles and fine particles,
It is also possible to first inject a suspension of coarse particles in succession first and subsequently inject a suspension of fine particles in succession to effectively improve the ground.
【００７２】なお、本発明の注入孔に挿入して用いられ
る注入管は複数本の細管を、これらの吐出口が互いに軸
方向に間隔を置いて位置するように結束されたものであ
ってもよい。The injection pipe used by inserting into the injection hole of the present invention may be a plurality of thin pipes bound so that their discharge ports are axially spaced from each other. Good.
【００７３】この種の注入管を用いた本発明にかかる地
盤注入を図９を用いて説明する。まず、注入管Ｂを地盤
１に設けられた注入孔Ｎに挿入設置する。Ground injection according to the present invention using this type of injection pipe will be described with reference to FIG. First, the injection pipe B is inserted and installed in the injection hole N provided in the ground 1.
【００７４】次いで、注入管Ｂと地盤壁18とのすき間に
硬化剤を填充し、硬化してシール19を形成する。この硬
化剤としては通常の瞬結性グラウトが用いられる。Then, a curing agent is filled in the gap between the injection pipe B and the ground wall 18 and cured to form a seal 19. As this curing agent, a usual quick-setting grout is used.
【００７５】このようにして、注入管Ｂを地盤１中に設
置の後、注入管Ｂの細管16、16・・・16を通して注入材を
送液し、吐出口17、17・・・ 17から地盤中に注入する。In this way, after the injection pipe B is installed in the ground 1, the injection material is fed through the thin pipes 16, 16 ... 16 of the injection pipe B and discharged from the discharge ports 17, 17 ... 17 Inject into the ground.
【００７６】このとき、吐出口17、17・・・ 17はそれぞ
れ、互いに軸方向に間隔を置いて位置しており、地盤１
中の地盤状況の異なる各層にそれぞれ別々に、独立して
開孔するから、これら各層に最適の注入量を細管16を通
して矢印方向に同時注入することができる。なお、上述
の注入において、注入管Ｂを引き上げたり、引き下げた
りしてステージを変化させて注入することもできる。At this time, the discharge ports 17, 17 ... 17 are located at axial intervals with respect to each other.
Since the holes are separately and independently formed in the respective layers having different ground conditions, it is possible to simultaneously inject the optimum injection amount into the respective layers through the thin tube 16 in the arrow direction. In addition, in the above-mentioned injection, the injection can be performed by changing the stage by raising or lowering the injection tube B.
【００７７】さらに、本発明にかかる上述の地盤注入工
法において、本発明にかかる注入管Ｂを地盤中に複数
本、間隔をあけて埋設し、上述と同様に各吐出口17から
地盤中に注入材を注入することもできる。この場合、注
入材は地盤中の縦方向、および横方向に立体的に同時注
入され、注入工期が短縮される。この場合も、注入管Ｂ
をそれぞれ引き上げたり、引き下げたりして上述と同様
に注入することもできる。Further, in the above-mentioned ground injection method according to the present invention, a plurality of injection pipes B according to the present invention are embedded in the ground at intervals, and the injection pipes B are injected into the ground through the respective discharge ports 17 as described above. Material can also be injected. In this case, the injection material is three-dimensionally simultaneously injected in the vertical direction and the horizontal direction in the ground, and the injection period is shortened. Also in this case, the injection tube B
It is also possible to inject in the same manner as described above by pulling up or pulling down.
【００７８】上述の注入管Ｂを用いた本発明にかかる地
盤注入機構を図10を用いて説明する。図10中、Ｘは注入
系統であり、Ｙは供給系統である。注入系統Ｘは独立し
た細管16を複数本結束して構成される上述の注入管Ｂを
地盤１中に埋設することにより構成される。A ground injection mechanism according to the present invention using the above-mentioned injection pipe B will be described with reference to FIG. In FIG. 10, X is an injection system and Y is a supply system. The injection system X is configured by embedding the above-described injection tube B, which is formed by binding a plurality of independent thin tubes 16 in the ground 1.
【００７９】供給系統Ｙは注入材貯蔵槽Ｔを備え、この
貯蔵槽Ｔは注入ポンプＰを配設した送液管２と連結され
る。注入材貯蔵槽Ｔでは、例えばＡ液として水ガラス水
溶液、Ｂ液として反応剤をそれぞれ配合して注入材を形
成し、この注入材を注入ポンプＰの作動により送液管２
を介し、細管16を通して注入管Ｂに一定圧の注入材が送
液される。The supply system Y is provided with an injection material storage tank T, and this storage tank T is connected to the liquid feed pipe 2 in which an injection pump P is arranged. In the injection material storage tank T, for example, an aqueous solution of water glass is mixed as the liquid A and a reaction agent is mixed as the liquid B to form an injection material, and the injection material P is operated by the injection pump P.
The injection material having a constant pressure is sent to the injection tube B through the thin tube 16 via the.
【００８０】このとき、コントローラ３は注入ポンプ
Ｐ、流量計Ｆからの情報を得、この情報をバルブＶに指
示することにより、注入管Ｂに所定量の注入量を送液し
得る。このような構成により、一本の注入管２を通して
複数の細管16、16・・・ 16に同時に注入液を送液し、か
つ、一本、一本の細管への注入を自動的に管理すること
ができる。At this time, the controller 3 obtains information from the infusion pump P and the flow meter F, and instructs this information to the valve V, so that a predetermined amount of infusion can be sent to the infusion pipe B. With such a configuration, the injection liquid is simultaneously sent to the plurality of thin tubes 16, 16 ... 16 through the single injection tube 2, and the injection into each single thin tube is automatically controlled. be able to.
【００８１】図11は図10における注入管Ｂを地盤１中に
複数本間隔をあけて設置し、この単位を複数個所に備え
た例であり、この場合、コントローラ３の指示により広
い範囲で連続注入が可能となる。FIG. 11 shows an example in which a plurality of injection pipes B shown in FIG. 10 are installed in the ground 1 at intervals and a plurality of these units are provided, and in this case, the controller 3 instructs the continuous operation in a wide range. Injection is possible.
【００８２】図12は本発明注入機構のさらに他の具体例
を示したフローシートであり、図13は図12の注入機構を
用いて複数の注入管Ｂに適用した他の例を示す。図12お
よび図13は一体として説明すると、バルブＶ′1 〜Ｖ′
n のいずれかを閉束する工程をくり返すことにより、対
象とするＸ1 ・・・ Ｘn の注入系統への流量を把握するこ
とができる。この場合、注入系統ＸはＸ1 、・・・ Ｘn と
いうように複数であってもよい。FIG. 12 is a flow sheet showing still another specific example of the injection mechanism of the present invention, and FIG. 13 shows another example applied to a plurality of injection tubes B using the injection mechanism of FIG. 12 and 13 will be described as a single unit, the valves V ′ 1 to V ′ will be described.
By repeating the step of閉束one of n, it is possible to grasp the flow rate of the injection system of the X 1 ··· X n of interest. In this case, there may be a plurality of injection systems X, such as X 1 , ... X n .
【００８３】さらに、この操作をコントローラで行うこ
とにより、それぞれの注入管ならびに各注入管の細管か
らの注入を計画通りに達成し得る。このようにして、全
注入領域にあらかじめ本発明注入管を設置しておいて、
短時間のうちに全注入領域の三次元注入、固結を達成し
得る。Further, by performing this operation by the controller, the injection from each injection tube and the thin tube of each injection tube can be achieved as planned. In this way, the injection pipe of the present invention is installed in advance in all injection regions,
Three-dimensional injection and consolidation of the entire injection area can be achieved in a short time.
【００８４】図14は本発明にかかる注入管Ｂを用いて注
入した際の注入状況を示した模式図であって、多数の注
入領域20、20・・・ 20に連続的に注入される。なお、本発
明では、図15に示されるように、注入系統Ｘにおいて、
多数の注入管Ｂ、Ｂ・・・ Ｂを多方向に並列して地盤中に
設置し、広範囲に連続的に注入することもできる。FIG. 14 is a schematic diagram showing the injection state when the injection is performed using the injection tube B according to the present invention, and the injection is continuously performed in a large number of injection regions 20, 20. In the present invention, as shown in FIG. 15, in the injection system X,
It is also possible to install a large number of injection pipes B, B ... B in parallel in multiple directions in the ground and continuously inject a wide range.
【００８５】[0085]
【発明の効果】以上のとおり、本発明は注入材の連続注
入工法および注入装置であって、注入対象地盤に設けら
れた複数の注入孔の所望の任意の注入孔に注入材貯蔵槽
からの注入材を送液管を通して注入孔の選定管理のもと
に、連続して注入し得るものである。INDUSTRIAL APPLICABILITY As described above, the present invention is a continuous pouring method for pouring material and a pouring device, wherein a desired pouring hole of a plurality of pouring holes provided in the ground for pouring is filled from a pouring material storage tank. The injection material can be continuously injected through the liquid delivery pipe under the control of selection of injection holes.
【００８６】さらに、本発明は地下掘削工事現場と、こ
の延線に近接する建造物、橋脚等の基礎、あるいは道路
面と間に土のゆるみが生じる可能性のある部分、あるい
は掘削によってすでにゆるみが生じている部分に複数の
注入孔を設け、この所望の注入孔を通じて注入材を適量
連続的に注入して地盤の変位を防止したり、あるいは地
盤の変位を測定しながら復旧するものである。Further, according to the present invention, there is a possibility that loosening of soil may occur between an underground excavation work site, a building close to this extension line, a foundation such as a bridge pier, or a road surface, or loosening by excavation. A plurality of injection holes are provided in the portion where the swelling occurs, and an appropriate amount of injection material is continuously injected through the desired injection holes to prevent displacement of the ground, or to recover while measuring the displacement of the ground. .
【図１】 本発明にかかる注入装置の一具体例の説明図
である。FIG. 1 is an explanatory diagram of a specific example of an injection device according to the present invention.
【図２】 本発明にかかる注入装置の他の具体例の説明
図である。FIG. 2 is an explanatory view of another specific example of the injection device according to the present invention.
【図３】 本発明にかかる注入装置のさらに他の具体例
の説明図である。FIG. 3 is an explanatory view of yet another specific example of the injection device according to the present invention.
【図４】道路下方のシールドトンネルの進行状態および
変位計測状態を表した説明図である。FIG. 4 is an explanatory diagram showing a traveling state and a displacement measurement state of a shield tunnel below a road.
【図５】図４の平面図である。FIG. 5 is a plan view of FIG.
【図６】注入孔Ｎi における注入材の注入量Ｑと測点Ｍ
i 点における道路の変位Δｈとの関係を表したグラフで
ある。[6] Injection volume of injected material in the injection hole N i Q and survey point M
It is a graph showing the relationship with the displacement Δh of the road at point i .
【図７】測点Ｍi 点における変位の復元状況を表したグ
ラフである。FIG. 7 is a graph showing a state of restoration of displacement at measurement points M i .
【図８】 二重管ダブルパッカーを用いた本発明にかか
る注入装置の具FIG. 8: Tool of injection device according to the present invention using double tube double packer
【図９】細管を複数本結束してなる注入管を用いた本発
明にかかる注入装置の具体例の説明図である。FIG. 9 is an explanatory diagram of a specific example of an injection device according to the present invention using an injection pipe formed by bundling a plurality of thin tubes.
【図１０】 図９の注入管を用いた本発明にかかる注入
装置の一具体例の説明図である。10 is an explanatory view of a specific example of an injection device according to the present invention using the injection pipe of FIG.
【図１１】 図９の注入管を用いた本発明にかかる注入
装置の他の具体例の説明図である。FIG. 11 is an explanatory view of another specific example of the injection device according to the present invention using the injection tube of FIG.
【図１２】 図９の注入管を用いた本発明にかかる注入
装置の他の具体例の説明図である。12 is an explanatory view of another specific example of the injection device according to the present invention using the injection tube of FIG.
【図１３】 図９の注入管を用いた本発明にかかる注入
装置のさらに他の具体例の説明図である。13 is an explanatory view of still another specific example of the injection device according to the present invention using the injection pipe of FIG.
【図１４】 図９の注入管を用いた本発明にかかる注入
装置のさらに他の具体例の説明図である。FIG. 14 is an explanatory view of yet another specific example of the injection device according to the present invention using the injection pipe of FIG.
【図１５】図９の注入管を用いた注入系統において、多
数の注入管を多方向に並列して地盤中に設置した例の説
明図である。15 is an explanatory diagram of an example in which a large number of injection pipes are installed in parallel in multiple directions in the ground in the injection system using the injection pipe of FIG.
【符号の説明】 １ 地盤 ２ 送液管 ３ コントローラ 21 道路 Ａ 二重管ダブルパッカー Ｂ 注入管 Ｔ 注入材貯蔵槽 Ｐ 注入ポンプ Ｆ 流量測定装置 Ｄ 注入管引上機構 Ｍ 測点 Ｎ 注入孔 Ｏ 変位測定装置 Ｖ バルブ Ｘ 注入系統 Ｙ 供給系統[Explanation of symbols] 1 ground 2 Liquid transfer pipe 3 controller 21 road A Double tube double packer B injection tube T injection material storage tank P infusion pump F Flow rate measuring device D Injection pipe lifting mechanism M stations N injection hole O displacement measuring device V valve X injection system Y supply system
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平７−300849（ＪＰ，Ａ) 特開 昭53−61111（ＪＰ，Ａ) 特開 平５−187014（ＪＰ，Ａ) 特開 昭56−20226（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) E02D 3/12,35/00 ─────────────────────────────────────────────────── --- Continuation of the front page (56) References JP-A-7-300849 (JP, A) JP-A 53-61111 (JP, A) JP-A 5-187014 (JP, A) JP-A 56- 20226 (JP, A) (58) Fields surveyed (Int.Cl. 7 , DB name) E02D 3 / 12,35 / 00
Claims (13)
に埋設された注入管であって、吐出口を有する外管と、
この外管内に挿入されたダブルパッカーを有する内管と
からなる二重注入管の内管を注入材送液管にバルブを介
してそれぞれ連結し、これらバルブをそれぞれコントロ
ーラにつないで該コントローラからの指示によりバルブ
の開閉を管理して注入孔の選定管理を行い、これにより
注入材を前記送液管を通じて所望の注入孔に連続して注
入することを特徴とする注入材の連続注入工法。 1. A plurality of injection holes provided in an injection target ground
An injection pipe embedded in the outer pipe having a discharge port,
An inner tube with a double packer inserted in this outer tube and
The inner pipe of the double injection pipe consisting of is connected to the injection material liquid feed pipe via valves , and these valves are connected respectively.
The valve according to the instruction from the controller.
By controlling the opening and closing of the
Continuously inject the injection material into the desired injection hole through the liquid delivery pipe.
A continuous injection method for injecting material, which is characterized in that
ポンプが配設され、この注入ポンプの作動により送液管
を通じて注入材を注入するようにした請求項１に記載さ
れた注入材の連続注入工法。 2. The liquid supply pipe according to claim 1,
A pump is installed, and the liquid delivery pipe is operated by the operation of this injection pump.
The injection material is injected through
Method of continuous injection of injected material.
はそれぞれ、注入管引上機構が備えられ、これら注入管
引上機構をそれぞれコントローラにつないで該コントロ
ーラからの指示により、前記各注入管の内管の引上管理
を行うようにした請求項１に記載された注入材の連続注
入工法。3. The double injection pipe according to claim 1, wherein
Each of them is equipped with an injection pipe pulling mechanism,
Connect the pulling mechanism to each controller
Management of pulling up the inner tube of each of the above injection tubes according to the instructions from the
The continuous injection method for injecting material according to claim 1, wherein
くとも二本の送液管と連結され、このうちの一本の送液
管から主材注入材を、他方から反応剤注入材をそれぞれ
送液し、これら主材注入材および反応剤注入材を各注入
管中で合流して注入する請求項１に記載された注入材の
連続注入工法。 4. The number of injection tubes according to claim 1,
At least two liquid feed pipes are connected, and one of these liquid feed pipes
The main material injection material from the pipe, and the reactant injection material from the other
Liquid is sent and each of these main material injection materials and reactant injection materials is injected.
The continuous injection method for injecting material according to claim 1, wherein the injection is performed by merging in a pipe .
掘削工事や荷重の作用によって変位が予想され、あるい
は変位が生じた建造物または基礎の近傍、あるいは道路
面下の地盤であり、これら注入対象地盤に設けられた注
入孔に注入材を選択的にかつ連続して注入することによ
り重大な変位が生じる前に変位を防止し、あるいは変位
が生じたのちに変位を復元するようにした請求項１に記
載された注入材の連続注入工法。5. The ground to be injected according to claim 1,
Displacement is expected due to excavation work or the action of load, or
Is near a displaced building or foundation, or a road
It is the ground below the ground, and the
By injecting the injection material selectively and continuously into the inlet hole,
Displacement or prevent displacement before significant displacement occurs
The displacement is restored after the occurrence of
Continuous infusion method of mounting infusion material.
変位測点を設け、これら測定の変位を計測しながら、注
入孔に注入材を注入するようにした請求項５に記載され
た注入材の連続注入工法。6. A plurality of locations on the ground to be injected according to claim 5
Displacement measuring points are provided, and while measuring the displacement of these measurements,
The injection material is injected into the inlet hole according to claim 5.
Continuous infusion method of injection material.
られた複数の注 入孔を注入ポンプおよび必要に応じて流
量測定装置の配設された送液管を介して注入材貯蔵槽と
それぞれ連結し、かつ、前記注入ポンプよりも下流であ
って、前記各注入孔に通じる送液管にそれぞれバルブを
配設し、さらに、前記注入ポンプをコントローラにつな
いで該コントローラから指示により、注入ポンプの作動
を管理して注入材の送液管理を行い、また、前記各バル
ブを前記コントローラにつないで該コントローラから指
示により、バルブの開閉を管理して注入孔の選定管理を
行い、かつ必要に応じて前記流量測定装置を前記コント
ローラにつないで該コントローラから指示により注入材
の流量管理を行い、これにより前記貯蔵槽中の注入材を
前記送液管を通じて所望の任意の注入孔に連続的に注入
するようにした請求項１に記載された注入材の連続注入
工法。7. The method according to claim 1, provided on the ground to be injected.
Multiple Note in hole flow if infusion pump and require that is
And the injection material storage tank via the liquid delivery pipe in which the quantity measuring device is arranged.
Connected to each other and downstream of the infusion pump
Then, attach a valve to each of the liquid delivery pipes leading to the injection holes.
And further connect the infusion pump to the controller.
Operate the infusion pump according to the instructions from the controller.
To control the delivery of the injectable material.
Plug the controller into the controller and insert a finger from the controller.
According to the instructions, control the opening and closing of the valve to control the selection of the injection hole.
And if necessary, the flow measurement device
Inject material connected to the roller according to instructions from the controller
The flow rate is controlled so that the injection material in the storage tank
Continuous injection into any desired injection hole through the liquid delivery tube
The continuous injection method for injecting material according to claim 1, wherein
と、この注入孔に挿入された注入管と、前記複数の注入
孔の各々にバルブを介してそれぞれ連通された注入材送
液管と、前記各バルブにそれぞれつながれたコントロー
ラとからなり、このコントローラからの指示により各バ
ルブの開閉を管理して注入孔の選定管理を行い、前記注
入管にさらに、注入ポンプおよび流量測定装置が配設さ
れ、これら注入ポンプおよび流量測定装置はそれぞれコ
ントローラとつながれており、該コントローラからの指
示により、注入ポンプの作動を管理して注入材の送液管
理を行うとともに、注入材の流量管理を行うようにし、
前記注入管が吐出口を有する外管と、この外管内の挿入
されたダブルパッカーを有する内管とから構成され、こ
れにより注入材を前記送液管を通じて所望の注入孔に連
続して注入することを特徴とする注入材の連続注入装
置。 8. A plurality of injection holes provided in an injection target ground
And an injection tube inserted into the injection hole, and the plurality of injection tubes.
The injection material is sent to each hole through a valve.
Liquid pipe and controller connected to each of the above valves
Each controller is instructed by this controller.
The opening and closing of the valve is controlled to control the selection of the injection hole.
In addition, an injection pump and a flow measuring device are installed in the inlet pipe.
These injection pumps and flow rate measuring devices
A finger from the controller.
The operation of the infusion pump is controlled according to the
And control the flow rate of the injection material,
An outer tube in which the injection tube has a discharge port, and an insertion in the outer tube
And an inner tube with a double packer
As a result, the injection material is connected to the desired injection hole through the liquid delivery pipe.
Continuous injection device for injection material characterized by continuous injection
Place
れぞれ、注入管引上機構が備えられ、これら注入管引上
機構をそれぞれ前記コントローラにつないで該コントロ
ーラからの指示により、前記各注入管の引上管理を行う
ようにした請求項８に記載された注入材の連続注入装
置。 9. The injection pipe according to claim 8, wherein
Each of them is equipped with an injection pipe lifting mechanism, and these injection pipe lifting mechanisms are provided.
Each of the mechanisms is connected to the controller and the controller is connected.
Management of the above injection pipes according to the instruction from the
A continuous injection device for an injection material according to claim 8,
Place
なくとも二本の送液管と連通され、このうちの一本の送
液管から主材注入材を、他の一本から反応剤注入材をそ
れぞれ送液し、これら主材注入材および反応剤注入材を
各注入孔中で合流して注入する請求項８に記載された注
入材の連続注入装置。 10. The injection hole according to claim 8, wherein
At least it is connected to two liquid transfer pipes, and one of these
Fill the main material injection material from the liquid pipe and the reactant injection material from the other pipe.
Liquids are respectively sent and these main material injection material and reactant injection material
The continuous pouring device for pouring material according to claim 8, wherein the pouring material merges and pours in each pouring hole .
下掘削工事や荷重の作用によって変位が予想され、ある
いは変位が生じた建造物または基礎の近傍、あるいは道
路面下の地盤であり、これら注入対象地盤に設けられた
注入孔に注入材を選択的にかつ連続して注入することに
より重大な変位が生じる前に変位を防止し、あるいは変
位が生じたのちに変位を復元するようにした請求項８に
記載された注入材の連続注入装置。11. The ground to be injected according to claim 8,
Displacement is expected due to under excavation work or the action of load, and there is
Or near the structure or foundation where the displacement occurred, or the road
It is the ground below the road surface, and was installed on the ground to be injected.
To selectively and continuously inject the injection material into the injection hole
Prevent or prevent displacement before more significant displacement occurs.
The displacement is restored after the position is generated.
Continuous injection device for the injection materials described .
けられた複数の注入孔と、該注入孔とそれぞれ送液管を
介して連結された注入材貯蔵槽と、前記送液管に配設さ
れた注入ポンプと、前記注入ポンプよりも下流であって
前記各注入孔に通じる送液管にそれぞれ配設されたバル
ブとから構成されてなる請求項８に記載された注入材の
連続注入装置。12. The method according to claim 8, which is installed on the ground to be injected.
A plurality of injection holes, and the liquid injection pipes
And an injection material storage tank connected via
The infusion pump and downstream of the infusion pump
The valves respectively arranged in the liquid delivery pipes leading to the respective injection holes.
9. The continuous injecting device for injecting material according to claim 8, which is configured by:
けられた複数の注入孔と、該注入孔とそれぞれ送液管を
介して連結された注入材貯蔵槽と、前記送液管に配設さ
れた注入ポンプと、必要に応じて前記送液管に配設され
た流量測定装置と、前記注入ポンプよりも下流であって
前記各注入孔に通じる送液管にそれぞれ配設されたバル
ブと、前記注入ポンプ、前記各バルブ、および必要に応
じて前記流量測定装置にそれぞれつながれたコントロー
ラとから構成され、該コントローラからの指示により、
それぞれ、注入ポンプの作動を管理して注入材の送液管
理を行い、また、各バルブの開閉を管理して注入孔の選
定管理を行い、さらに必要に応じて流量測定を管理して
注入材の流量管理を行って、前記貯蔵槽中の貯蔵材を前
記送液管を通じて所望の任意の注入孔に連続的に注入す
るようにした請求項８に記載された注入材の連続注入装
置。13. The method according to claim 8, which is installed on the ground to be injected.
A plurality of injection holes, and the liquid injection pipes
And an injection material storage tank connected via
Installed infusion pump and, if necessary, installed in the liquid delivery pipe
A flow measuring device, and downstream from the infusion pump.
The valves respectively arranged in the liquid delivery pipes leading to the respective injection holes.
Valve, the infusion pump, the valves, and
A controller connected to each of the flow rate measuring devices
It is composed of the
Controls the operation of the infusion pump and feeds the injection material.
And control the opening and closing of each valve to select the injection hole.
Perform constant management, and manage flow measurement as needed.
The flow rate of the injection material is controlled so that the storage material in the storage tank
Continuously inject into any desired injection hole through the liquid transfer tube
The continuous injection device for the injection material according to claim 8, wherein the injection material is continuously injected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24405696A JP3418069B2 (en) | 1996-03-01 | 1996-08-28 | Injection method and injection equipment |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8-71009 | 1996-03-01 | ||
| JP7100996 | 1996-03-01 | ||
| JP24405696A JP3418069B2 (en) | 1996-03-01 | 1996-08-28 | Injection method and injection equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09291526A JPH09291526A (en) | 1997-11-11 |
| JP3418069B2 true JP3418069B2 (en) | 2003-06-16 |
Family
ID=26412121
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24405696A Expired - Fee Related JP3418069B2 (en) | 1996-03-01 | 1996-08-28 | Injection method and injection equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3418069B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010261236A (en) * | 2009-05-08 | 2010-11-18 | Heisei Technos Kk | Ground improvement method |
| JP5515190B1 (en) * | 2013-06-27 | 2014-06-11 | 国立大学法人 東京大学 | Liquefaction countermeasures for existing buried pipes |
Families Citing this family (12)
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| NL1010212C2 (en) * | 1998-09-29 | 2000-03-30 | Pieter Faber | System for leveling subsided concrete raft used as building foundation, involves multiple injection points to force hardening material below areas which are lower than others |
| JP4672693B2 (en) * | 2007-03-19 | 2011-04-20 | 強化土エンジニヤリング株式会社 | Multi-point ground injection method and multi-point ground injection equipment |
| JP5119381B2 (en) * | 2008-05-09 | 2013-01-16 | 三信建設工業株式会社 | Ground improvement method |
| JP4948563B2 (en) * | 2009-05-19 | 2012-06-06 | 強化土エンジニヤリング株式会社 | Injection method and injection equipment |
| JP2013158725A (en) * | 2012-02-07 | 2013-08-19 | Nippo Corp | Liquid supply apparatus |
| JP5574308B1 (en) * | 2013-08-09 | 2014-08-20 | 平成テクノス株式会社 | Injection material supply device |
| JP6319839B2 (en) * | 2014-07-09 | 2018-05-09 | 株式会社不動テトラ | Horizontal mounting apparatus and horizontal mounting method for board |
| JP5911159B1 (en) * | 2015-10-29 | 2016-04-27 | 株式会社トラバース | Soil improvement material injection system and column row continuous wall method |
| JP5971537B1 (en) * | 2015-12-18 | 2016-08-17 | 強化土株式会社 | Ground improvement method |
| JP5911161B1 (en) * | 2016-01-08 | 2016-04-27 | 株式会社トラバース | Soil improvement material injection system and column row continuous wall method |
| JP6371024B1 (en) * | 2018-02-15 | 2018-08-08 | 有限会社シモダ技術研究所 | Method of injecting quick-setting hardened grout |
| CN112942308B (en) * | 2021-01-28 | 2022-06-24 | 中铁三局集团广东建设工程有限公司 | Soft foundation pavement construction device and soft foundation pavement construction method |
-
1996
- 1996-08-28 JP JP24405696A patent/JP3418069B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010261236A (en) * | 2009-05-08 | 2010-11-18 | Heisei Technos Kk | Ground improvement method |
| JP5515190B1 (en) * | 2013-06-27 | 2014-06-11 | 国立大学法人 東京大学 | Liquefaction countermeasures for existing buried pipes |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09291526A (en) | 1997-11-11 |
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