JPH0756133B2 - Construction method of support lining layer - Google Patents
Construction method of support lining layerInfo
- Publication number
- JPH0756133B2 JPH0756133B2 JP63013588A JP1358888A JPH0756133B2 JP H0756133 B2 JPH0756133 B2 JP H0756133B2 JP 63013588 A JP63013588 A JP 63013588A JP 1358888 A JP1358888 A JP 1358888A JP H0756133 B2 JPH0756133 B2 JP H0756133B2
- Authority
- JP
- Japan
- Prior art keywords
- injection
- liquid
- nozzle
- passage
- injection pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Lining And Supports For Tunnels (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） 本発明はトンネル等地中坑道の支保や止水を目的として
掘削地盤の周囲に造成する支保覆工層の造成工法に関す
るものである。Description: TECHNICAL FIELD The present invention relates to a method for constructing a support lining layer formed around an excavated ground for the purpose of supporting underground tunnels such as tunnels and stopping water.
（従来の技術） 従来、トンネルの支保覆工については事前に成形された
セグメントを並例して行なう工法が行われてきたが、近
時注入管による硬化材注入によって行われるようになっ
てきた。しかしながら、充填密度と浸透性の問題がある
ためこれに使用される硬化材は緩結性の硬化材に限られ
ている。(Prior Art) Conventionally, for the support and lining work of a tunnel, a method of performing preformed segments in parallel has been performed, but recently it has been performed by injecting a hardening material through an injection pipe. . However, due to the problems of packing density and permeability, the hardening material used for this is limited to the slow-setting hardening material.
（発明が解決しようとする課題） 上記のように緩結性の硬化材を用いた支保覆工は硬化時
間が長く、掘削速度に合わせて工事を進捗させることが
極めて困難であった。(Problems to be Solved by the Invention) As described above, the supporting lining using the loose-setting curing material has a long curing time, and it has been extremely difficult to proceed with the construction in accordance with the excavation speed.
また、充分な硬化が行われていない内に掘削が行われれ
ば支保効果を得ることができず重大な事故にもつながり
かねないという問題点があった。Further, there is a problem that if excavation is carried out while sufficient hardening is not carried out, the supporting effect cannot be obtained and a serious accident may occur.
（課題を解決するための手段） 従来注入による支保覆工、特に蓋部注入に瞬結性の効果
材が用いられなかったのは、瞬結性硬化材が２液性であ
り、２液の混合によって短時間で硬化するため、噴射さ
れた硬化材が充分に浸透充填する前に硬化して注入層に
疎密を生じ均質な硬化層を得ることができなかったこと
が一因となっている。また瞬結性硬化材の注入は充填密
度を高めるため、低圧注入により土粒子間の配列を崩さ
ずクリアランスを縫って浸透が行われることが重点とさ
れてきた。(Means for Solving the Problem) The fact that the instantaneous effect material has not been used in the conventional support lining by injection, especially in the injection of the lid, is because the instantaneous curing material is a two-liquid type. This is partly because the injected curing material hardens before it is sufficiently permeated and filled, and the injection layer becomes sparse and dense, and a uniform cured layer could not be obtained. . In addition, since the injection of the quick-setting hardener increases the packing density, it has been emphasized that the infiltration is performed by sewing the clearance without breaking the arrangement of the soil particles by the low-pressure injection.
本発明は瞬結性硬化材が噴射されるノズルの上部に清水
の噴射ノズルを設け、清水噴射による土粒子間のクリア
ランスの整序が行われた土壌に瞬結性硬化材を高圧噴射
するようにして、この問題に対処したものである。本発
明において用いられる高圧ポンプ装置は、シリンダと弁
室との間に圧送液とは比重の異なる液体をピストンの圧
力伝達媒体として充填して圧力応動体の摺動摩擦による
消耗を防止したもので500kgf/cm2に達する出力を確保し
た。According to the present invention, a fresh water injection nozzle is provided above a nozzle to which a quick-setting hardener is sprayed, and a high-pressure spray of a quick-setting hardener is applied to soil in which clearance between soil particles is arranged by fresh water injection. And deal with this problem. The high-pressure pump device used in the present invention fills between the cylinder and the valve chamber a liquid having a specific gravity different from that of the liquid to be pumped as the pressure transmission medium of the piston to prevent the wear of the pressure responder due to the sliding friction. The output reached up to / cm 2 .
（作用） その１流路に連通する噴射ノズルから高圧噴射される清
水は周辺土壌を切削して土粒子を整序するとその下部に
同心円状に重合して構成されたその２、その３流路の噴
射ノズルからＡ液、Ｂ液が同時に高速噴射され、噴射過
程において完全に混合され、注入管の抜去移動に伴なっ
てその１ノズルの噴射跡に混合された瞬結性硬化材を噴
射し、高められた攪拌混合効果によって完全な固結効果
を期することができ、均質な硬化材充填が行われる。(Operation) No. 2 and No. 3 flow paths where fresh water, which is high-pressure jetted from the jet nozzle communicating with the one flow passage, is formed by cutting the surrounding soil and ordering the soil particles to superimpose concentrically on the lower part thereof. Liquid A and liquid B are simultaneously jetted at high speed from the jetting nozzle of No. 2, and are completely mixed in the jetting process, and the instantaneous hardening material is mixed with the jetting trace of that one nozzle as the injection pipe is removed. By the increased stirring and mixing effect, it is possible to achieve a complete solidifying effect, and a uniform hardening material is filled.
（実 施 例） 以下図面に従って本発明の実施例を説明する。(Examples) Examples of the present invention will be described below with reference to the drawings.
１は注入管でその１流路11、その２流路12、その３流路
13を備え、各流路はそれぞれ噴射ノズル21、22、23に連
通して開口する。注入管１の後端はスイベル３を介して
材料供給部に連絡するホース31、32、33に連結すると共
に、台車４上に装置された注入管作動機構５に支持され
る。ホース31、32、33に連結して注入材料に高圧力を与
える高圧ポンプ装置は、ピストンシリンダと弁室及びシ
リンダ室から弁室に圧力を伝動する圧力応動体とから成
り、圧力応動体は両室間に充填された硬化剤液とは比重
の異なるオイルのような液体とこれに従って応動する弾
性膜によって構成されている。応動体を構成する充填液
はピストン作動による容積変化分だけシリンダと弁室間
を移動し、それに応じた硬化剤液が弁室内に流入し、ピ
ストンの反対作動によって圧送される。その間圧送され
る注入材は充填液の存在により、ダイヤフラムやプラン
ジヤに接触することはなく吸引圧送されるので摺動摩擦
による消耗が防止されて出力のアップに繋がるものであ
る。バルブボックスは弁室に通じる入口通路と出口通路
にそれぞれ設けられ、弁座部を畧半球状の凹面形状に形
成し、凹面から軸方向に複数の小孔を形成したバルブシ
ートと凹面形状に対応する球体から成るバルブ本体とバ
ルブ本体をシートに押圧するスプリングとで構成され、
球体バルブの作動が圧力の向上を更に推進している。こ
のように装置された注入管１を対象地盤x1に向けて推進
挿入し、所定の深度に達したところで、その１流路11に
清水、その２流路12にＡ液、その３流路13にＢ液を200k
g/cm2〜500kg/cm2の高圧力で圧送し、噴射ノズル21、2
2、23からそれぞれ高圧噴射すると清水噴射と共に、下
部においてＡ液、Ｂ液が同時に高速噴射され、噴射過程
において完全に混合される。Reference numeral 1 is an injection pipe, which is the first flow path 11, the second flow path 12, and the third flow path.
13 is provided, and each flow path communicates with the injection nozzles 21, 22, and 23 and opens. The rear end of the injection pipe 1 is connected to the hoses 31, 32 and 33 which are connected to the material supply unit via the swivel 3, and is supported by the injection pipe operating mechanism 5 mounted on the carriage 4. A high-pressure pump device that is connected to the hoses 31, 32, and 33 and applies a high pressure to the injected material includes a piston cylinder, a valve chamber, and a pressure responder that transmits pressure from the cylinder chamber to the valve chamber. It is composed of a liquid such as oil having a different specific gravity from the hardener liquid filled between the chambers, and an elastic film which responds accordingly. The filling liquid that constitutes the responder moves between the cylinder and the valve chamber by the volume change due to the piston operation, and the corresponding hardening agent liquid flows into the valve chamber and is pumped by the opposite operation of the piston. Due to the presence of the filling liquid, the injecting material that is pumped during that time is sucked and pumped without contacting the diaphragm or the plunger, so that wear due to sliding friction is prevented and the output is increased. The valve box is provided in each of the inlet passage and outlet passage leading to the valve chamber, the valve seat part is formed in a concave hemispherical concave shape, and it corresponds to the valve seat and concave shape in which multiple small holes are formed in the axial direction from the concave surface. It is composed of a valve body consisting of a spherical body and a spring that presses the valve body against the seat,
The actuation of the ball valve further drives the pressure increase. The injection pipe 1 thus installed is thrust and inserted toward the target ground x1, and when a predetermined depth is reached, the first channel 11 is clean water, the second channel 12 is A liquid, and the third channel 13 is Liquid B to 200k
High pressure of g / cm 2 to 500 kg / cm 2 is used to pump and jet nozzles 21 and 2
When high-pressure injection from 2 and 23 respectively, liquid A and liquid B are simultaneously injected at high speed in the lower part together with the injection of fresh water, and are completely mixed in the injection process.
そこで注入管を回転させながら、抜去方向に後退させ上
部に設けられた流路11の噴射ノズル21からの清水噴射に
よって整序された軌跡部ｙにノズル22、23から硬化材を
注入して円筒状に硬化材層を造成する。硬化層x1を造成
した後、これと並列して硬化層x2、更にx3と順次これを
並列して造成し、支保覆工層を造成するものである。Therefore, while rotating the injection pipe, the hardening material is injected from the nozzles 22 and 23 into the locus part y arranged by the injection of fresh water from the injection nozzle 21 of the flow path 11 provided in the upper part by retreating in the removal direction to form a cylinder. The hardening material layer is formed in a shape. After the hardened layer x1 is formed, the hardened layer x2 is formed in parallel with the hardened layer x1, and further sequentially formed in parallel with the hardened layer x3 to form the support lining layer.
（発明の効果） 本発明は以上のように構成したので、瞬結性硬化材によ
り短時間で硬化する強度の高い均質な支保覆工層を造成
できる効果がある。従って、注入管を水平方向に挿入す
る場合も、垂直方向に挿入する場合も適用でき、水脈の
ある地盤や緊急止水覆工にも活用できると共に硬化待機
時間等従来作業に要した無駄な時間を省き、作業能率を
大巾に高めたものである。(Effects of the Invention) Since the present invention is configured as described above, there is an effect that it is possible to form a high-strength, uniform support lining layer that is hardened in a short time by the instantaneous curing material. Therefore, it can be applied to the case where the injection pipe is inserted horizontally or vertically, and it can be used for the ground with water veins and emergency water lining, as well as the wasteful time required for conventional work such as curing waiting time. The work efficiency is greatly improved by omitting.
図は本発明の実施例を示すもので、第１図は施工状況を
示す側面図、第２図は注入管の構造を示す縦断側面図で
ある。 １〜注入管、11〜その１流路、12〜その２流路 13〜その３流路、21〜清水噴射ノズル 22〜Ａ液噴射ノズル、23〜Ｂ液噴射ノズル ３〜スイベル、31、32、33〜圧送ホース ４〜台車、５〜注入管作動機構 x1、x2、x3〜硬化層地盤 ｙ〜清水噴射軌跡FIG. 1 shows an embodiment of the present invention. FIG. 1 is a side view showing a construction situation, and FIG. 2 is a vertical sectional side view showing a structure of an injection pipe. DESCRIPTION OF SYMBOLS 1-injection pipe, 11-the 1st flow path, 12-the 2nd flow path 13-the 3rd flow path, 21-fresh water injection nozzle 22-A liquid injection nozzle, 23-B liquid injection nozzle 3-swivel, 31, 32 , 33 ~ pumping hose 4 ~ truck, 5 ~ injection pipe actuating mechanism x1, x2, x3 ~ hardening layer ground y ~ fresh water injection locus
Claims (1)
通する噴射ノズルを備え、その２、その３流路が同心円
状に重合して構成された噴射ノズルに連通すると共に、
その１流路の噴射ノズルをその２、その３流路の噴射ノ
ズルより上部に設けた注入管を対象地盤中に挿入し、所
定深度に達したところで、その１流路に清水、その２流
路に２液性瞬結硬化材のＡ液、その３流路に同硬化材Ｂ
液を高圧力で圧送することにより、各噴射ノズルから高
速噴流として噴射しながら、注入管を回転しつつ抜去方
向に移動して注入管軌跡に硬化層を造成することを特徴
とする支保覆工層の造成工法1. An isolated nozzle is provided with three flow passages and an injection nozzle communicating with each flow passage on a tip side wall, and the two and three flow passages are connected with an injection nozzle formed by concentrically overlapping each other.
Inserting the injection nozzle of the 1-passage into the 2nd injection pipe, which is provided above the 3rd-passage injection nozzle into the target ground, and when reaching a predetermined depth, clean water into the 1-passage of the 2nd flow A liquid of a two-component instantaneous curing material in the channel, and the same curing material B in the three channels
By supporting the liquid at a high pressure by jetting it as a high-speed jet from each jet nozzle, while rotating the injection pipe, it moves in the removal direction to form a hardened layer on the injection pipe trajectory. Layer construction method
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63013588A JPH0756133B2 (en) | 1988-01-26 | 1988-01-26 | Construction method of support lining layer |
| KR1019890000821A KR930002970B1 (en) | 1988-01-26 | 1989-01-26 | Timbering covering layer construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63013588A JPH0756133B2 (en) | 1988-01-26 | 1988-01-26 | Construction method of support lining layer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01190817A JPH01190817A (en) | 1989-07-31 |
| JPH0756133B2 true JPH0756133B2 (en) | 1995-06-14 |
Family
ID=11837352
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63013588A Expired - Lifetime JPH0756133B2 (en) | 1988-01-26 | 1988-01-26 | Construction method of support lining layer |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPH0756133B2 (en) |
| KR (1) | KR930002970B1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100322314B1 (en) * | 1998-05-09 | 2002-04-17 | 와타루 나카니시 | Method for creating ground hardened layer |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5814893B2 (en) * | 1979-02-15 | 1983-03-23 | 三信建設工業株式会社 | Ground stabilization method |
| JPS58189411A (en) * | 1983-03-08 | 1983-11-05 | Kyokado Eng Co Ltd | Composite grout work |
| JPS61211418A (en) * | 1985-03-15 | 1986-09-19 | Shigeharu Arima | Chemical solution pouring method |
-
1988
- 1988-01-26 JP JP63013588A patent/JPH0756133B2/en not_active Expired - Lifetime
-
1989
- 1989-01-26 KR KR1019890000821A patent/KR930002970B1/en not_active IP Right Cessation
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01190817A (en) | 1989-07-31 |
| KR890012064A (en) | 1989-08-24 |
| KR930002970B1 (en) | 1993-04-16 |
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