JPS6248040B2 - - Google Patents
Info
- Publication number
- JPS6248040B2 JPS6248040B2 JP55012535A JP1253580A JPS6248040B2 JP S6248040 B2 JPS6248040 B2 JP S6248040B2 JP 55012535 A JP55012535 A JP 55012535A JP 1253580 A JP1253580 A JP 1253580A JP S6248040 B2 JPS6248040 B2 JP S6248040B2
- Authority
- JP
- Japan
- Prior art keywords
- ground
- rod
- cone rod
- cone
- voids
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000000945 filler Substances 0.000 claims description 9
- 238000010276 construction Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 4
- 239000004568 cement Substances 0.000 claims description 3
- 239000008267 milk Substances 0.000 claims description 3
- 210000004080 milk Anatomy 0.000 claims description 3
- 235000013336 milk Nutrition 0.000 claims description 3
- 239000011800 void material Substances 0.000 description 9
- 238000002347 injection Methods 0.000 description 6
- 239000007924 injection Substances 0.000 description 6
- 239000011440 grout Substances 0.000 description 4
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 1
- 238000009412 basement excavation Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000007429 general method Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000004570 mortar (masonry) Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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】
本発明は、掘削トンネル等の地盤内空隙を、ト
ンネル内部より試験機により調査して直ちにこの
調査機の中空コーンロツド内を通して探知空隙位
置に充填材を注入することを特徴とする工法に関
するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention is characterized in that a void in the ground of an excavated tunnel, etc. is investigated using a testing machine from inside the tunnel, and a filler is immediately injected into the detected void position through the hollow cone rod of the investigating machine. This is related to the construction method.
軟弱地盤中に掘削するシールドトンネルにおい
て裏込注入は、周辺地盤に対する影響を少なくす
るための重要な作業の一つである。而して従来の
充填材注入は、セグメントのグラウト注入孔より
モルタル、豆砂利、薬液等を圧入する方法が一般
的であるが、更に入念な施工を目的として二次注
入と称してセグメントの裏面および地盤内への注
入を行つている。而してこの二次注入を行う必要
個所は、坑内への漏水状態や地表沈下状況を見て
行つているが、従来の方法としては地盤中の空隙
のある個所を調査せずに施工経験または勘によつ
て行う方法が一般的である。而して地盤中特にト
ンネルに近い土被り部分には空隙が生じ易いの
で、これを如何に正確かつ簡便に発見してこれを
如何に迅速かつ能率よく充填するかが問題であ
る。ところで従来地表からボーリングしてここか
ら空隙に二次注入を施工した例があるが、このよ
うな工法では例えば地上に構築物等が無く地表か
ら施工することができる現場条件が必要であるこ
と、トンネル直上付近まで深く削孔しなければ施
工ができないので不正確となり易い等の欠点があ
る。 In shield tunnels excavated into soft ground, backfilling is one of the important operations to reduce the impact on the surrounding ground. Conventional filler injection is generally performed by press-fitting mortar, pea gravel, chemical solution, etc. through the grout injection hole of the segment. and injecting into the ground. The necessary locations for this secondary injection are determined by checking the state of water leakage into the mine and the ground subsidence, but the conventional method is based on construction experience or construction experience without investigating the locations where there are voids in the ground. The general method is based on intuition. Since voids are likely to form in the ground, especially in the overburdened areas near tunnels, the problem is how to find them accurately and simply and how to fill them quickly and efficiently. By the way, there are conventional examples of drilling from the ground surface and performing secondary injection into the void from here, but this method requires site conditions that allow construction from the ground surface, for example, with no structures on the ground, and tunnels. There are drawbacks such as the fact that construction cannot be carried out unless the hole is drilled deeply to the vicinity directly above, so it is likely to be inaccurate.
本発明はこの問題点を解決するために、土質調
査用のコーンペネトロメーター状試験機の探知用
ロツドを中空となし、その先端にコーンの受ける
荷重を検知するロードセルを装置してこれをイン
デイケーターに連結して地盤中の空隙を検知した
場合、この中空部を通して直ちに充填材を注入す
るように、検知用ロツドを充填材注入に利用する
ことを特徴とする工法に関するものであつて、そ
の実施例を添付図面について説明すれば、１は試
験機のコーンロツドにして中空のパイプ状とな
し、その先端にコーン状の受圧片２を装置すると
共に、その内側に対向してロードセル３を配設
し、これをリード線４によつてインデイケーター
５に連結するもので、この中空のコーンロツド１
の先端ロードセル３の後方の周側に充填材噴出孔
６……を設けかつこのコーンロツド１の側壁に、
充填材の送給ポンプに対する連結パイプ７を設け
たものである。 In order to solve this problem, the present invention makes the detection rod of a cone penetrometer-like testing machine for soil investigation hollow, and installs a load cell at the tip of the rod to detect the load applied to the cone. This method relates to a construction method characterized in that a detection rod is used to inject filler so that when a void in the ground is detected by connecting it to a container, the filler is immediately injected through the hollow portion. To explain the embodiment with reference to the attached drawings, 1 is a cone rod of a testing machine in the form of a hollow pipe, and a cone-shaped pressure receiving piece 2 is installed at the tip of the cone rod, and a load cell 3 is arranged facing inside the cone rod. This is connected to the indicator 5 by a lead wire 4, and this hollow cone rod 1
A filler injection hole 6 is provided on the rear peripheral side of the tip load cell 3, and a side wall of the cone rod 1 is provided with a filler injection hole 6.
A connecting pipe 7 to a feed pump for filling material is provided.
以上のように構成した中空コーンロツド１は第
２図に示すように、トンネル坑内の作業台車Ａ上
に装置して操作するものである。すなわちこの作
業台車Ａには電動機Ｂを備えた電動シリンダーＣ
を支軸Ｄによつて回動し得るように支承し、この
電動シリンダーＣに電動機Ｂによつて回転させら
れる螺杆Ｅを装置し、これにスライドナツトＦを
螺合してその一側に回り止め杆Ｇを係合させ、こ
れによつて螺杆Ｅが回転した際にこれに伴つて回
転することなく螺杆に沿うて上下に移動するよう
にしたもので、このスライドナツトＦの他側にコ
ーンロツド１の下端を固定してスライドナツトＦ
と共に上下に移動するようにしたものである。而
してこのコーンロツド１の先端に設けたロードセ
ル３のリード線４は、作業台車Ａに装置したイン
デイケーター５に連結し、またコーンロツドの側
部に設けた連結パイプ７には、操作バルブＨを介
してグラウトポンプＩに連通したものである。 As shown in FIG. 2, the hollow cone rod 1 constructed as described above is installed and operated on a work cart A inside a tunnel. In other words, this work cart A has an electric cylinder C equipped with an electric motor B.
is rotatably supported by a support shaft D, and a screw rod E that is rotated by an electric motor B is installed on this electric cylinder C, and a slide nut F is screwed onto this screw and rotates to one side thereof. A retaining rod G is engaged, so that when the screw rod E rotates, it moves up and down along the screw rod without rotating along with it.A cone rod is attached to the other side of the slide nut F. Fix the lower end of 1 and tighten the slide nut F.
It is designed to move up and down along with the movement. The lead wire 4 of the load cell 3 installed at the tip of the cone rod 1 is connected to the indicator 5 installed on the work cart A, and the operating valve H is connected to the connecting pipe 7 installed on the side of the cone rod. It communicates with the grout pump I through the grout pump I.
以上のように構成した装置による本発明工法を
説明すれば、先ずシールドテール部において組み
立てたセグメントＪがシールド掘進によつてテー
ル部より離れた位置で、地山とセグメントとの空
隙に裏込を行うのであるが、その前に坑内に作業
台車Ａを導入してこれに装置したコーンロツド１
を、電動機Ｂを作動してセグメントＪに予じめ設
けた挿通孔Ｋに合わせて押し出して地山Ｌ内に挿
入する。このようにして地山Ｌ内に空隙Ｍがある
ことをロードセル３によつて探知した場合、直ち
にコーンロツド１を停止させてグラフトポンプＩ
を駆動してセメントミルクをその中空部を通して
先端の噴出孔６……より空隙Ｍ内に注入充填して
地山の陥没を防止するものである。 To explain the construction method of the present invention using the device configured as above, first, the segment J assembled at the shield tail part is backfilled into the gap between the ground and the segment at a position away from the tail part by shield excavation. However, before that, we introduced work cart A into the mine and installed cone rod 1 on it.
is inserted into the ground L by activating the electric motor B to push it out and fit into the insertion hole K previously provided in the segment J. In this way, when the load cell 3 detects that there is a void M in the ground L, the cone rod 1 is immediately stopped and the graft pump I
is driven to inject cement milk into the gap M through the hollow part thereof and from the spout hole 6 at the tip to prevent the ground from collapsing.
以上のようにこの発明工法によれば、コーンロ
ツドを中空となし、その先端に装置したロードセ
ルにより地盤中に空隙を探知した場合に直ちにこ
の中空部を通して空隙内にセメントミルク等の充
填材を注入するので地盤内の空隙探知後の空隙充
填作業が極めて容易、確実にかつ迅速に行うこと
ができるので、地盤の緩みを最小限に留め、爾後
の作業を安全に行うことができる等格別の効果、
特徴がある。 As described above, according to the invention method, the cone rod is made hollow, and when a void is detected in the ground by a load cell installed at the tip, filler such as cement milk is immediately injected into the void through the hollow portion. This makes it possible to perform void filling work extremely easily, reliably, and quickly after detecting voids in the ground, which has exceptional effects such as minimizing loosening of the ground and allowing subsequent work to be carried out safely.
It has characteristics.
第１図はコーンロツドの一部切欠縦断側面図、
第２図はコーンロツドの取付使用態様を示す正面
図である。
１……コーンロツド、２……受圧片、３……ロ
ードセル、４……リード線、５……インデイケー
ター、６……噴出孔、７……連結パイプ、Ａ……
作業台車、Ｂ……電動機、Ｃ……電動シリンダ
ー、Ｄ……支軸、Ｅ……螺杆、Ｆ……スライドナ
ツト、Ｇ……回り止め杆、Ｈ……操作バルブ、Ｉ
……グラウトポンプ、Ｊ……セグメント、Ｋ……
コーンロツド挿通孔、Ｌ……地山、Ｍ……空隙。
Figure 1 is a partially cutaway longitudinal side view of the cone rod.
FIG. 2 is a front view showing how the cone rod is attached and used. 1... Cone rod, 2... Pressure receiving piece, 3... Load cell, 4... Lead wire, 5... Indicator, 6... Spout hole, 7... Connection pipe, A...
Work trolley, B...Electric motor, C...Electric cylinder, D...Spindle, E...Screw rod, F...Slide nut, G...Non-rotating rod, H...Operation valve, I
...grout pump, J...segment, K...
Cone rod insertion hole, L...ground, M...void.
Claims (1)
立セグメント内部より空隙探知用の中空コーンロ
ツドを貫入し、その先端のロードセルによつて地
盤内の空隙を探知した後直ちにこの探知用コーン
ロツドの中空部を通して地盤内空隙にセメントミ
ルク等充填材を注入することを特徴とする掘削地
山の地盤内空隙探知並びに充填材注入工法。1. In the shield construction method, a hollow cone rod for detecting voids is penetrated into the excavated ground from inside the assembled segment, and the load cell at the tip of the cone rod is used to detect voids in the ground. A method for detecting voids in the ground of excavated earth and for injecting filler, which is characterized by injecting a filler such as cement milk into the voids.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1253580A JPS56111796A (en) | 1980-02-06 | 1980-02-06 | Method of ground inside void detecting and filling material injection construction of excavated hill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1253580A JPS56111796A (en) | 1980-02-06 | 1980-02-06 | Method of ground inside void detecting and filling material injection construction of excavated hill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56111796A JPS56111796A (en) | 1981-09-03 |
| JPS6248040B2 true JPS6248040B2 (en) | 1987-10-12 |
Family
ID=11808017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1253580A Granted JPS56111796A (en) | 1980-02-06 | 1980-02-06 | Method of ground inside void detecting and filling material injection construction of excavated hill |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56111796A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS612596U (en) * | 1984-06-11 | 1986-01-09 | 純一 都築 | concrete segment |
| JP2719925B2 (en) * | 1988-05-12 | 1998-02-25 | 不動建設株式会社 | Filler injection device |
| JP6035649B2 (en) * | 2012-11-13 | 2016-11-30 | ライト工業株式会社 | Ground investigation device, continuous wall construction device and continuous wall construction method |
| JP2014234629A (en) * | 2013-06-03 | 2014-12-15 | 株式会社東設土木コンサルタント | Foundation strength measurement analysis system |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4820422U (en) * | 1971-07-14 | 1973-03-08 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5741277Y2 (en) * | 1977-11-30 | 1982-09-10 |
-
1980
- 1980-02-06 JP JP1253580A patent/JPS56111796A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4820422U (en) * | 1971-07-14 | 1973-03-08 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56111796A (en) | 1981-09-03 |
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