JPS5846966B2 - Investigation method of underground continuous wall - Google Patents
Investigation method of underground continuous wallInfo
- Publication number
- JPS5846966B2 JPS5846966B2 JP13650678A JP13650678A JPS5846966B2 JP S5846966 B2 JPS5846966 B2 JP S5846966B2 JP 13650678 A JP13650678 A JP 13650678A JP 13650678 A JP13650678 A JP 13650678A JP S5846966 B2 JPS5846966 B2 JP S5846966B2
- Authority
- JP
- Japan
- Prior art keywords
- wall
- underground continuous
- continuous wall
- investigation
- investigation method
- 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
Landscapes
- Bulkheads Adapted To Foundation Construction (AREA)
Description
【発明の詳細な説明】
この発明は、地下連続壁の不良箇所の調査方法に関する
ものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for investigating defective locations in an underground continuous wall.
場所打ちコンクリートによる地下連続壁においては、ス
ライム処理が不充分であった場合には打継目や打設コン
クリート中にスライムを巻き込むことがあり、また大深
度連続壁の場合に十分コンクリートを廻らせることが困
難であるところより、局部的に粗な部分が生じ、漏水箇
所が存在したり、強度不足の箇所を残す恐れがある。In underground continuous walls made of cast-in-place concrete, if slime treatment is insufficient, slime may get caught in the pour joints and into the poured concrete, and in the case of deep continuous walls, it is important to ensure that the concrete is sufficiently distributed. If it is difficult to do so, there may be localized rough areas, leaving water leakage points or areas with insufficient strength.
−万、大深度の地下連続壁を構築し、石油、液化ガスの
地下備蓄用タンクを建設することが計画されているとこ
ろより、前記地下連続壁の問題点を解消することがより
重要となり、そのため十分な調査管理方法を確立するこ
とが要望されている。-Since it is planned to construct a deep underground continuous wall and underground storage tanks for oil and liquefied gas, it is becoming more important to solve the problems of the underground continuous wall. Therefore, it is desired to establish a sufficient investigation management method.
この発明は前記要望に対処すべく開発されたもので、以
下その詳細を図示した実施例によって説明する。The present invention was developed to meet the above-mentioned needs, and details thereof will be explained below with reference to illustrated embodiments.
先ず、壁体Ａを場所打ちコンクリートで形成するに際し
て、その壁体Ａ内に竪調査孔１を形成する。First, when forming the wall A with cast-in-place concrete, a vertical investigation hole 1 is formed in the wall A.
例えば、打継き部に調査孔１を形成する場合また溝２を
掘削し、突起を有するインターロッキングパイプ３を使
用してコンクリート４を打設し、次いでインターロッキ
ングパイプ３を抜いて溝２′を掘削し、次いで挿入パイ
プ５を挿入してコンクリート４′を打ち、そのコンクリ
ート４′が若干強度を発現した時点で挿入パイプ５を引
抜き、調査孔１を形威する。For example, when forming a survey hole 1 in a joint, a groove 2 is also excavated, concrete 4 is poured using an interlocking pipe 3 having protrusions, and then the interlocking pipe 3 is removed and the groove 2' Then, the insertion pipe 5 is inserted and concrete 4' is poured. When the concrete 4' has developed some strength, the insertion pipe 5 is pulled out and the investigation hole 1 is formed.
次いで、調査孔１内にウォータージェット掘削機Ｂを挿
入し、高圧水発生装置６よりの高圧水をノズル７より噴
射して壁体Ａ内の低強度部を掘削し、掘削空洞部Ｃの調
査をする。Next, a water jet excavator B is inserted into the investigation hole 1, and high-pressure water from the high-pressure water generator 6 is injected from the nozzle 7 to excavate a low-strength part in the wall A, and the excavated cavity C is investigated. do.
調査方法としては、プレンオメーターによる調査測定、
水分計による調査測定、水中カメラによる確認観察、赤
外線写真による確認観察、超音波による調査測定、ファ
イバースコープによる確認観察等がある。Survey methods include survey measurement using a plane meter,
These include survey measurements using a moisture meter, confirmation observations using an underwater camera, confirmation observations using infrared photography, survey measurements using ultrasonic waves, and confirmation observations using a fiberscope.
この発明は以上の横取からなり、地下連続壁の壁体内に
竪調査孔を形威し、次いで竪調査孔内にウォータージェ
ット掘削機により高水圧を噴射して壁体内の低強度部を
掘削し、次いでその掘削空洞部における状態を調査する
ので確実な調査ができる。This invention consists of the above-mentioned extraction, forming a vertical investigation hole in the wall of an underground continuous wall, and then injecting high water pressure into the vertical investigation hole with a water jet excavator to excavate the low-strength part in the wall. Then, the conditions in the excavated cavity are investigated, making it possible to conduct a reliable investigation.
第１図、第２図、第３図、第４図、第５図は調査孔の形
成順序を示した平面図、第６図はウォータージェットに
よる掘削状態の断面図、第７図は調査状態の縦断面図で
ある。
Ａ・・・・・・壁体、１・・・・・・調査孔、２・・・
・・・溝、３・・・・・・インターロッキングパイプ、
４・・・・・・コンクリート、５・・・・・・挿入パイ
プ、６・・・・・・高圧水発生装置、Ｂ・・・・・・ウ
ォータージェット掘削機、７・・・・・・ノズル、８・
・・・・・送水または送気パイプ、Ｃ・・・・・・掘削
空洞部。Figures 1, 2, 3, 4, and 5 are plan views showing the order in which investigation holes are formed, Figure 6 is a cross-sectional view of the excavation state using a water jet, and Figure 7 is the investigation state. FIG. A...Wall body, 1...Investigation hole, 2...
...Groove, 3...Interlocking pipe,
4... Concrete, 5... Insertion pipe, 6... High pressure water generator, B... Water jet excavator, 7... Nozzle, 8.
...Water or air supply pipe, C...Excavation cavity.
Claims (1)
の壁体内に竪調査孔を形威し、次いで竪調査孔内にウォ
ータージェット掘削機を挿入し、かつ高水圧を噴射して
壁体内の低強度部を掘削し、掘削空洞部の調査をなすこ
とを特徴とする地下連続壁の調査方法。1. When forming a wall with cast-in-place concrete, a vertical investigation hole is formed in the wall, and then a water jet excavator is inserted into the vertical investigation hole and high water pressure is injected to remove low-strength parts within the wall. A method for investigating an underground continuous wall, characterized by excavating and investigating the excavated cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13650678A JPS5846966B2 (en) | 1978-11-06 | 1978-11-06 | Investigation method of underground continuous wall |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13650678A JPS5846966B2 (en) | 1978-11-06 | 1978-11-06 | Investigation method of underground continuous wall |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5565638A JPS5565638A (en) | 1980-05-17 |
| JPS5846966B2 true JPS5846966B2 (en) | 1983-10-19 |
Family
ID=15176748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13650678A Expired JPS5846966B2 (en) | 1978-11-06 | 1978-11-06 | Investigation method of underground continuous wall |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5846966B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58106014A (en) * | 1981-12-21 | 1983-06-24 | Asahi Denka Kogyo Kk | Cut-off work between underground continuous wall elements |
| CN111576503B (en) * | 2020-05-28 | 2021-02-26 | 机械工业勘察设计研究院有限公司 | Method for implanting optical fiber for testing internal force of cast-in-place pile by using acoustic tube |
-
1978
- 1978-11-06 JP JP13650678A patent/JPS5846966B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5565638A (en) | 1980-05-17 |
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