JPH07145613A - Method of detecting charged condition of filler in tunnel grouting and measuring instrument for the detection - Google Patents
Method of detecting charged condition of filler in tunnel grouting and measuring instrument for the detectionInfo
- Publication number
- JPH07145613A JPH07145613A JP29367093A JP29367093A JPH07145613A JP H07145613 A JPH07145613 A JP H07145613A JP 29367093 A JP29367093 A JP 29367093A JP 29367093 A JP29367093 A JP 29367093A JP H07145613 A JPH07145613 A JP H07145613A
- Authority
- JP
- Japan
- Prior art keywords
- grouting
- tunnel
- filler
- detection sensor
- ground
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、トンネルグラウチン
グに関するものであり、特に、グラウチング充填材の充
填状態を検知するトンネルグラウチングに於ける充填材
の充填状態検知方法及び該検知方法に用いる測定装置に
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to tunnel grouting, and more particularly to a method for detecting a filling state of a filling material in tunnel grouting for detecting the filling state of the grouting filling material and a measuring device used in the detection method. It is a thing.
【０００２】[0002]
【従来の技術】圧力導水路トンネル等では、トンネル周
辺地山の改良及び覆工コンクリートにプレストレスを導
入する目的でグラウチングが行われる。又、トンネルの
補助工法である長尺先受工法に於ても、鋼管と地山との
間の隙間を埋め、そして、支保能力の向上を図ったり周
辺地盤を改良するためにグラウチングが行われる。2. Description of the Related Art In a pressure headrace tunnel or the like, grouting is carried out for the purpose of improving the ground around the tunnel and introducing prestress into the lining concrete. In addition, even in the long-distance receiving method, which is an auxiliary construction method for tunnels, grouting is performed to fill the gap between the steel pipe and the ground and to improve the support capacity and improve the surrounding ground. .
【０００３】而して、該グラウチングを施工するとき、
トンネル周辺地盤の状況等によりセメントミルク等のグ
ラウチング充填材の配合及び注入量等を定め、そして、
注入孔より所定の充填材を加圧注入する。When the grouting is applied,
Determine the composition and injection amount of grouting filler such as cement milk according to the condition of the ground around the tunnel, and
A predetermined filling material is injected under pressure through the injection hole.
【０００４】[0004]
【発明が解決しようとする課題】上記従来例に於ては、
注入した充填材の到達範囲及び充填密度を判断すること
は不可能であり、施工品質の確認ができないという欠点
がある。そこで、グラウチング注入充填材の注入範囲等
を正確に把握できるようにして、適正な施工管理を可能
とするために解決せらるべき技術的課題が生じてくるの
であり、この発明は該課題を解決することを目的とす
る。SUMMARY OF THE INVENTION In the above conventional example,
It is impossible to judge the reach and filling density of the injected filling material, and there is a drawback that the construction quality cannot be confirmed. Therefore, it becomes possible to accurately grasp the injection range and the like of the grouting injection filler, and there arises a technical problem to be solved in order to enable proper construction management, and the present invention solves the problem. The purpose is to do.
【０００５】[0005]
【課題を解決するための手段】この発明は、上記目的を
達成するために提案せられたものであり、トンネル周辺
の地山を地盤改良するために行うトンネルグラウチング
に於て、グラウチング施工範囲内又はその周辺に調査孔
を設け、該調査孔内に複数の検知センサーを挿入し、該
検知センサーの電気的抵抗値によって充填状態を検知す
るトンネルグラウチングに於ける充填材の充填状態検知
方法、及び上記複数の検知センサーとともに仕切具を前
記調査孔内に挿入し、該複数の検知センサーを前記仕切
具によって個別に隔離し、該検知センサーの信号線を外
部の計測器に接続したトンネルグラウチングに於ける充
填材の充填状態検知方法に用いる測定装置を提供するも
のである。The present invention has been proposed in order to achieve the above-mentioned object, and in the tunnel grouting performed for ground improvement of the ground around the tunnel, within the grouting construction range. Alternatively, an inspection hole is provided in the periphery of the inspection hole, a plurality of detection sensors are inserted into the inspection hole, and a filling state detection method of a filling material in tunnel grouting for detecting the filling state by the electric resistance value of the detection sensor, and In tunnel grouting in which a partitioning tool is inserted into the inspection hole together with the plurality of detection sensors, the plurality of detection sensors are individually isolated by the partitioning tool, and a signal line of the detection sensor is connected to an external measuring instrument. The present invention provides a measuring device used in a method for detecting a filling state of a filling material.
【０００６】[0006]
【作用】グラウチング施工範囲内又はその周辺に複数の
調査孔を穿孔し、該調査孔に本発明の測定装置を各々１
つ以上挿入する。そして、該測定装置を構成する検知セ
ンサーはリード線を介して計測器に接続される。而し
て、注入孔より注入された充填材は地山に浸透して該調
査孔に流入する。該調査孔内に流入した充填材の液面が
上昇することにより前記検知センサーに接触する。そし
て、充填材中のアルカリ成分によって検知センサーの測
定抵抗値が低下する。斯くして、前記測定器により各検
知センサーの電気的抵抗値を測定することにより、測定
した検知センサーに充填材が充填されたか否かを検知で
きる。Function: A plurality of survey holes are drilled in or around the grouting construction area, and one measuring device of the present invention is provided in each of the survey holes.
Insert one or more. Then, the detection sensor constituting the measuring device is connected to the measuring instrument via a lead wire. Thus, the filler injected from the injection hole penetrates into the ground and flows into the inspection hole. The liquid level of the filler that has flowed into the inspection hole rises to contact the detection sensor. Then, the measured resistance value of the detection sensor decreases due to the alkaline component in the filling material. Thus, by measuring the electric resistance value of each detection sensor by the measuring device, it is possible to detect whether or not the measured detection sensor is filled with the filler.
【０００７】[0007]
【実施例】以下、本発明の一実施例を図１乃至図５に従
って詳述する。図１及び図２はトンネル１の周辺の地山
２へ地盤固めを行うコンソリーデーショングラウチング
の施工を示す。図１に示すように、該トンネル１のコン
クリートライニング３より周辺の地山に調査孔４，４…
を穿孔し、該調査孔４，４…にグラウチングの充填材の
検知センサー５，５…及び仕切具６，６…を挿入する。
そして、該検知センサー５，５…にリード線７，７…を
接続し、該リード線７，７…の他端部はトンネル１内の
計測器８に接続される。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to FIGS. 1 and 2 show construction of consolidation grouting for solidifying the ground 2 around the tunnel 1. As shown in FIG. 1, the survey holes 4, 4 ... Are formed in the ground around the concrete lining 3 of the tunnel 1.
Are pierced, and detection sensors 5, 5 ... Of the grouting filler and partitioning tools 6, 6 ... Are inserted into the inspection holes 4, 4.
The lead wires 7, 7 ... Are connected to the detection sensors 5, 5 ... And the other end portions of the lead wires 7, 7 ... Are connected to the measuring instrument 8 in the tunnel 1.
【０００８】又、グラウチングの充填材を注入する注入
孔９，９…は該調査孔４，４…と同様に前記コンクリー
トライニング３に穿孔される。尚、図１及び図２に示す
ように、該注入孔９，９…の数は該トンネル１の周辺地
盤の状況により定められ、該調査孔４，４…は前記注入
孔９，９…の数量や間隔等によって注入施工範囲等を確
認できる位置に適当数を定める。尚、調査孔４は図１に
おいて左右両端のみとし、その間の孔は全て注入孔９と
してもよい。Further, the injection holes 9, 9 ... For injecting the grouting filler are formed in the concrete lining 3 in the same manner as the inspection holes 4, 4. As shown in FIGS. 1 and 2, the number of the injection holes 9, 9 ... Is determined by the condition of the ground around the tunnel 1, and the inspection holes 4, 4 ... An appropriate number is set at a position where the injection work range can be confirmed by the quantity and interval. It should be noted that the inspection holes 4 may be only left and right ends in FIG. 1, and the holes between them may be all injection holes 9.
【０００９】そして、図３に示すように、測定装置１０
は検知センサー５、仕切具６及びリード線７にて形成さ
れる。該調査孔４に挿入する検知センサー５の電極Ｔ，
Ｔはリード線７へ接続され、該調査孔４の長手方向に上
下を仕切具６，６…にて仕切られる。前記リード線７は
該仕切具６，６の中央を貫通し、該調査孔４を閉鎖し、
前記リード線７並びに前記検知センサー５を該調査孔４
の内壁面に接触しないように保持し、且つ、グラウチン
グの充填材が該調査孔４内の底部から流出するのを防止
する。Then, as shown in FIG.
Is formed by the detection sensor 5, the partition 6, and the lead wire 7. The electrode T of the detection sensor 5 to be inserted into the inspection hole 4,
T is connected to the lead wire 7 and is divided in the longitudinal direction of the inspection hole 4 by partitioning tools 6, 6 ... The lead wire 7 penetrates through the centers of the dividers 6 and 6 to close the inspection hole 4,
The lead wire 7 and the detection sensor 5 are connected to the inspection hole 4
It is held so that it does not come into contact with the inner wall surface of the inner wall of the hole, and the grouting filler is prevented from flowing out from the bottom of the inspection hole 4.
【００１０】而して、前記測定装置１０を使用するとき
は、図１に示すように前記注入孔９，９…よりグラウチ
ングの充填材を注入すると、注入された充填材は該注入
孔９，９…の壁面より周囲の地山２に浸透する。そし
て、例えば同図に於ける注入孔９ａから地山２に方向Ｓ
1 へ浸透した充填材は前記調査孔４ａに到達し、該調査
孔４ａ内の仕切具６ａ，６ｂで形成された空洞部に流入
し、そして、充填材は検知センサー５ａの一対の電極
Ｔ，Ｔに接触する。又、地山２を方向Ｓ2 にて浸透した
充填材は調査孔４ｂに到達した後、検知センサー５ｂの
一対の電極Ｔ，Ｔに接触する。これにより、該検知セン
サー５ａと検知センサー５ｂの夫々の周囲空間は充填材
にて充填され、斯くして、任意の検知センサーの周囲に
充填される充填材の充填状況を各区域毎に知ることがで
きる。When the measuring device 10 is used, the grouting filler is injected from the injection holes 9, 9 ... As shown in FIG. Penetrates into the surrounding ground 2 from the wall surface of 9 ... Then, for example, in the direction S from the injection hole 9a to the natural ground 2 in the figure.
The filler that has permeated 1 reaches the inspection hole 4a and flows into the cavity formed by the partitioning tools 6a and 6b in the inspection hole 4a, and the filler is supplied to the pair of electrodes T of the detection sensor 5a. Touch T. Further, the filler penetrating the natural ground 2 in the direction S 2 reaches the inspection hole 4b and then contacts the pair of electrodes T, T of the detection sensor 5b. Thereby, the space around each of the detection sensor 5a and the detection sensor 5b is filled with the filling material, and thus, the filling state of the filling material filled around the arbitrary detection sensor can be known for each area. You can
【００１１】又、各測定装置及びリード線は充填材内に
埋め殺しの状態に維持される。それゆえに、充填材を注
入した後に任意な検知センサーの電気的抵抗値を計測
し、その計測値を基に充填材の凝結状態等の状況を把握
することができる。図４及び図５は他の実施例のトンネ
ル補助工法である先行先受け工法を示す。図４に示すよ
うに、地山１１のトンネル１２の端部面より調査孔１
３，１３…を該トンネル１２と平行に穿孔する。そし
て、図５に示すように、該調査孔１３，１３…はトンネ
ル１２近傍の注入施工範囲等を確認できるトンネル１２
の外周上に適当数を設定する。Further, each measuring device and the lead wire are kept buried in the filling material. Therefore, it is possible to measure the electrical resistance value of an arbitrary detection sensor after injecting the filling material and grasp the situation such as the condensed state of the filling material based on the measured value. FIG. 4 and FIG. 5 show a leading front receiving method which is a tunnel auxiliary method of another embodiment. As shown in FIG. 4, the inspection hole 1 is formed from the end surface of the tunnel 12 of the natural ground 11.
.. are drilled in parallel with the tunnel 12. Then, as shown in FIG. 5, the inspection holes 13, 13 ...
Set an appropriate number on the outer circumference of.
【００１２】そして、図４に示すように、前述した実施
例と同様に該調査孔１３，１３…に検知センサー１４，
１４…及び仕切具１５，１５…を挿入し、リード線１
６，１６を配線して測定装置１７を形成し、該リード線
１６，１６…の他端部を前記トンネル１２内の計測器１
８に接続する。又、グラウチングの充填材を注入する注
入孔１９，１９…は、前記トンネル１２の入口上部より
孔口をトンネル１２の奥部にずらしながら斜め上方に向
け穿孔される。而して、前記測定装置１７を使用すると
きは、図１及び図２に示したものと同様に、任意の検知
センサーの電気的抵抗値を計測することにより、該検知
センサーの配置位置における充填材の注入状況及び凝結
状態等を判断できる。Then, as shown in FIG. 4, as in the above-described embodiment, the detecting sensors 14,
14 ... and the partitioning tools 15, 15 ...
6 and 16 are wired to form a measuring device 17, and the other ends of the lead wires 16, 16 ... Are connected to the measuring device 1 in the tunnel 12.
Connect to 8. Further, the injection holes 19, 19 ... For injecting the grouting filler are formed obliquely upward while shifting the hole opening from the upper part of the entrance of the tunnel 12 to the inner part of the tunnel 12. Thus, when the measuring device 17 is used, the electric resistance value of an arbitrary detection sensor is measured in the same manner as that shown in FIGS. It is possible to judge the injection status and setting status of the material.
【００１３】尚、本発明は、本発明の精神を逸脱しない
限り種々の改変を為すことができ、そして、本発明が該
改変されたものに及ぶことは当然である。The present invention can be modified in various ways without departing from the spirit of the present invention, and it goes without saying that the present invention covers the modified products.
【００１４】[0014]
【発明の効果】この発明は、上記一実施例に詳述せる如
く、グラウチング施工範囲内又はその周辺に設けた調査
孔に、充填材の検知センサーを電気的に接続した測定装
置を配設し、充填材が注入されたとき、検知センサーの
電気的抵抗値を計測することにより極めて確実且つ、迅
速に前記充填材の注入範囲等を把握できる。As described in detail in the above one embodiment, the present invention provides a measuring device electrically connected to a filler detection sensor in an inspection hole provided in or around the grouting area. When the filling material is injected, by measuring the electric resistance value of the detection sensor, the injection range of the filling material and the like can be grasped extremely reliably and quickly.
【００１５】更に、充填材を注入した後に於ても、任意
の検知センサーの電気的抵抗値を計測することにより、
充填材の凝結状態等を把握でき、適正なグラウチングの
施工管理が可能となり、施工品質の向上に寄与できる
等、正に諸種の効果を奏する発明である。Further, even after the filling material is injected, by measuring the electric resistance value of an arbitrary detection sensor,
This is an invention that has various positive effects, such as being able to grasp the setting state of the filler and the like, enabling proper construction management of grouting, and contributing to the improvement of construction quality.
【図１】本発明の一実施例を示し、その一部切欠縦断側
面図。FIG. 1 is a partially cutaway vertical side view showing an embodiment of the present invention.
【図２】図１のＡ−Ａ線断面図。FIG. 2 is a sectional view taken along line AA of FIG.
【図３】図１に示す調査孔の一部切欠拡大縦断面図。3 is a partially cutaway enlarged vertical cross-sectional view of the inspection hole shown in FIG.
【図４】本発明の他の実施例を示し、その一部切欠縦断
側面図。FIG. 4 is a partially cutaway vertical side view showing another embodiment of the present invention.
【図５】図４のＢ−Ｂ線断面図。5 is a cross-sectional view taken along the line BB of FIG.
１，１２ トンネル ２，１１ 地山 ４，１３ 調査孔 ５，１４ 検知センサー ６，１５ 仕切具 ７，１６ リード線 ８，１８ 計測器 １０，１７ 測定装置 1,12 Tunnel 2,11 Ground 4,13 Survey hole 5,14 Detection sensor 6,15 Partitioning tool 7,16 Lead wire 8,18 Measuring instrument 10,17 Measuring device
Claims (2)
に行うトンネルグラウチングに於て、グラウチング施工
範囲内又はその周辺に調査孔を設け、該調査孔内に複数
の検知センサーを挿入し、該検知センサーの電気的抵抗
値によって充填状態を検知することを特徴とするトンネ
ルグラウチングに於ける充填材の充填状態検知方法。1. In tunnel grouting performed to improve the ground around a tunnel, an inspection hole is provided in or around the grouting construction range, and a plurality of detection sensors are inserted into the inspection hole. A method for detecting the filling state of a filling material in tunnel grouting, characterized by detecting the filling state by the electric resistance value of a detection sensor.
を前記調査孔内に挿入し、該複数の検知センサーを前記
仕切具によって個別に隔離し、該検知センサーの信号線
を外部の計測器に接続したことを特徴とする請求項１記
載のトンネルグラウチングに於ける充填材の充填状態検
知方法に用いる測定装置。2. A partition tool is inserted into the inspection hole together with the plurality of detection sensors, the plurality of detection sensors are individually isolated by the partition tool, and a signal line of the detection sensor is connected to an external measuring instrument. The measuring device used in the method for detecting the filling state of a filling material in tunnel grouting according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29367093A JP2834656B2 (en) | 1993-11-24 | 1993-11-24 | Detecting method of filling state of filler in tunnel grouting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29367093A JP2834656B2 (en) | 1993-11-24 | 1993-11-24 | Detecting method of filling state of filler in tunnel grouting |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07145613A true JPH07145613A (en) | 1995-06-06 |
| JP2834656B2 JP2834656B2 (en) | 1998-12-09 |
Family
ID=17797726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29367093A Expired - Fee Related JP2834656B2 (en) | 1993-11-24 | 1993-11-24 | Detecting method of filling state of filler in tunnel grouting |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2834656B2 (en) |
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-
1993
- 1993-11-24 JP JP29367093A patent/JP2834656B2/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001200529A (en) * | 1999-12-14 | 2001-07-27 | Sol Cie | Method for monitoring diameter of column formed by injection |
| KR100445687B1 (en) * | 2002-01-31 | 2004-08-21 | 남광토건 주식회사 | rock bolt-filler checking device and method |
| KR100939654B1 (en) * | 2008-03-28 | 2010-02-03 | 한국지질자원연구원 | Method for evaluation of the ground reinforcement effect using 4-d electrical resistivity monitoring |
| JP2018521245A (en) * | 2015-12-03 | 2018-08-02 | コリア インスティチュート オブ ジオサイエンス アンド ミネラル リソースズ | Rock grouting monitoring method using electrical resistivity |
| JP2018003277A (en) * | 2016-06-27 | 2018-01-11 | 株式会社鴻池組 | Method and system for detecting natural ground improvement |
| CN108037158A (en) * | 2017-12-29 | 2018-05-15 | 中冶建筑研究总院有限公司 | A kind of method and apparatus being detected using metal detection line to grouting material plumpness |
| CN111458488A (en) * | 2020-04-13 | 2020-07-28 | 安徽理工大学 | Method for detecting grouting quality of soft bottom plate of coal mine rock roadway |
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|---|---|
| JP2834656B2 (en) | 1998-12-09 |
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