JPS63189529A - Regulation of water level in caisson in pneumatic caisson work - Google Patents
Regulation of water level in caisson in pneumatic caisson workInfo
- Publication number
- JPS63189529A JPS63189529A JP1968887A JP1968887A JPS63189529A JP S63189529 A JPS63189529 A JP S63189529A JP 1968887 A JP1968887 A JP 1968887A JP 1968887 A JP1968887 A JP 1968887A JP S63189529 A JPS63189529 A JP S63189529A
- Authority
- JP
- Japan
- Prior art keywords
- water level
- caisson
- pressure
- box
- measuring device
- 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.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 48
- 230000001105 regulatory effect Effects 0.000 claims abstract description 5
- 238000010276 construction Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 238000009412 basement excavation Methods 0.000 description 6
- 238000007664 blowing Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、ニューマチックケーソン工事におけるケー
ソン函内の水位調整方法に関す不ものである。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a method for adjusting the water level inside a caisson box in pneumatic caisson construction.
（従来の技術）
二ニーマチックケーソン掘削工事の施工法としては、大
別して人力掘削と機械掘削の２種類の方法が用いられて
おり、函内の圧力調整は函内作業従事者が面外作業従事
者に水位を報告することにより、毎月の工事進捗（地下
水位、刃口深度、土質の変化等）Ｋ合わせて一日当り数
度、手動で行っている。(Conventional technology) Two types of construction methods are used for double-matic caisson excavation work: manual excavation and mechanical excavation. By reporting the water level to the workers, monthly construction progress (groundwater level, cutting depth, changes in soil quality, etc.) can be completed manually several times a day.
（この発明が解決すべき問題点）
函内には照明、通信設備の他に機械掘削の場合潜かんシ
ョベル（電動）が配置され、これによって函内土砂の掘
削及び積込みを行う。(Problems to be Solved by the Invention) In addition to lighting and communication equipment, in the case of mechanical excavation, a submersible shovel (electric) is placed inside the box, and this excavates and loads the earth and sand inside the box.
この為、函内には重要な電気関係の諸設備が多く、函内
が浸水すると、潜かんショベルその他の各設備が使用出
来なくなり、又ケーソン本体の傾斜等の変位にもつなが
シ、後の掘削工事に多大な影響を与えることとなる。For this reason, there are many important electrical equipment inside the box, and if the box gets flooded, the submersible excavator and other equipment will become unusable, and it will also cause the caisson itself to tilt or otherwise displace. This will have a significant impact on excavation work.
尚、掘削作業中は函内水位を一定以下にしなければ掘削
作業が出来ない事から、ある一定の空気量は必要である
が、作業休止中は刃口先端より、水位を上昇させ、エア
ーブローを無くする事により、コンプレッサーの運転率
を大幅に軽減する事が出来る。During excavation work, a certain amount of air is required because the water level inside the box cannot be lowered below a certain level, but during work stoppages, the water level is raised from the tip of the cutting edge, and air blowing is carried out. By eliminating this, the operating rate of the compressor can be significantly reduced.
しかし、従来は、園内水位を理想的な水位にする為には
、圧力調整装置の調整を必要とする。これには、函内、
ロック上、調整装置の各部所に各−名を配置し、調整後
水位の安定を確認するまで２〜３時間を要していた。However, conventionally, in order to bring the water level in the park to the ideal water level, it is necessary to adjust the pressure regulator. This includes Hakanai,
It took two to three hours to place each person at each part of the adjustment device on the lock and to confirm that the water level was stable after adjustment.
又、河川の水位変動により、函内圧力が一定でも園内水
位は変化するため、その確認に相当の時間と労力を必要
とする。Furthermore, due to changes in the water level of the river, the water level in the park changes even if the pressure inside the box is constant, so it takes a considerable amount of time and effort to confirm this.
この為、作業休止中も園内設備の保全を考え、作業中と
ほぼ同じ圧力を保つ様運転しているのが常で、作業休止
中の空気消費量を低減させる事が難しかった。For this reason, in order to maintain the facilities in the park even during work stoppages, it is common practice to maintain almost the same pressure as during work hours, making it difficult to reduce air consumption during work stoppages.
この発明はニューマチックケーソン工事に於ける、前記
の様な問題点を解決して、函内の水位管理を、厳密に行
なえ、函内の機械他設備に影響を与えず、エアーブロー
の発生を押え、空気消費量すなわち、電力消費量を必要
最少限にする事の出来るケーソン函内の水位調整方法を
提供する事を目的とする。This invention solves the above-mentioned problems in pneumatic caisson construction, allows strict water level control inside the box, does not affect machinery and other equipment inside the box, and prevents air blows. It is an object of the present invention to provide a method for adjusting the water level in a caisson box that can minimize the amount of presser and air consumption, that is, the amount of electricity consumed.
（問題点を解決するための手段）
この発明によるニューマチックケーソン工事における函
内水位調整方法は、ケーソン函内に当該函内の空気圧を
計測する圧力測定器と、函内の水位を計測する水位測定
器を配置し、函内作業中は圧力測定器の計測値に基いて
、作業休止中は水位測定器の計測値に基いて、ケーソン
外に配置された圧力調整装置により送気圧力を調整し、
園内水位を適正に維持することを特徴とする。(Means for Solving the Problems) The method for adjusting the water level in a box in pneumatic caisson construction according to the present invention includes a pressure measuring device installed in a caisson box to measure the air pressure in the box, and a water level to measure the water level in the box. A measuring device is installed, and the air supply pressure is adjusted by a pressure regulator placed outside the caisson, based on the measured value of the pressure measuring device during work inside the box, and based on the measured value of the water level measuring device during work stoppages. death,
It is characterized by maintaining the water level within the park appropriately.
（実施例） 以下に図示するこの発明の実施例により説明する。(Example) The invention will be explained by the embodiments illustrated below.
第１図に、この方法を採用したニューマチックケーソン
工事の概略図を示した。Figure 1 shows a schematic diagram of pneumatic caisson construction using this method.
ここで、ケーソン１外部の所定位置にはコンプレッサー
３が配置されており、このコンプレッサー３から圧送さ
れた空気は、圧力調整装置４に送られ、園内所要圧力に
調圧され、送気管５によりケーソン１の作業室内２に送
気される。Here, a compressor 3 is arranged at a predetermined position outside the caisson 1, and the air pressure-fed from the compressor 3 is sent to a pressure regulating device 4, where it is regulated to the required pressure in the park, and then passed through an air pipe 5 to the caisson. Air is blown into the working room 2 of 1.
作業室２内には、当該作業室２内の空気圧を検出する圧
力測定器６と水位を検出する電極棒式の水位測定器７が
設置されている。これらの測定器６．７から得られる空
気圧及び水位測定値は、圧力調整装置４に入力され、何
れか一方の測定値が送気圧力調整のパラメーターとして
、選択的に用いられる。Inside the working chamber 2, a pressure measuring device 6 for detecting the air pressure in the working chamber 2 and an electrode rod type water level measuring device 7 for detecting the water level are installed. The air pressure and water level measurement values obtained from these measuring devices 6.7 are input to the pressure adjustment device 4, and either one of the measurement values is selectively used as a parameter for air supply pressure adjustment.
以上の構成に於いて、作業時には、第２図（ａ）に示し
た圧力測定器６で検出される作業室２内の空気圧を圧力
調整装置４の制御パラメーターとして作業室２内の空気
圧を所定の値に調整する。In the above configuration, during work, the air pressure in the working chamber 2 is determined by using the air pressure in the working chamber 2 detected by the pressure measuring device 6 shown in FIG. 2(a) as a control parameter of the pressure regulator 4. Adjust to the value of
また、作業休止時には、作業室２内に水位測定器７によ
り、検出される園内水位ＬＷ’ をパラメーターとして
、圧力調整装置４にフィードバックして、゛園内水位を
、理想水面に保つ様コントロールする。Furthermore, when the work is stopped, the garden water level LW' detected by the water level measuring device 7 in the work room 2 is fed back to the pressure regulator 4 as a parameter to control the water level in the garden to maintain it at the ideal water level.
降雨等による外水位の急激な変動等により作業上園内の
水位を意図的に変化させたい時は、面外にて、園内水位
を確認しつつ、圧力調整装置４に手動で調整を加える事
も可能である。When you want to intentionally change the water level inside the park due to sudden changes in the water level outside due to rainfall, etc., you can manually adjust the pressure regulator 4 while checking the water level inside the park outside the area. It is possible.
（発明の効果）
この発明によるニューマチックケーソン工事に於ける函
内水位調整方法の実施例は以上の通りであシ、次に述べ
る効果を挙げることができる。(Effects of the Invention) The embodiments of the method for adjusting the water level in a box in pneumatic caisson construction according to the present invention are as described above, and the following effects can be achieved.
■ 園内水位の確認が、面外に於いて可能な為、管理が
非常に容易で確実なものとなり、常時園内の水位が確認
できる為園内機器等に対する不安がなくなる。■ Since the water level in the garden can be checked from outside the garden, management becomes very easy and reliable, and since the water level in the garden can be checked at all times, there is no need to worry about equipment in the garden.
■ 空気消費量が大巾に軽減出来る事から、コンプレッ
サーの動力源である電力使用量を押える事ができる。■ Since air consumption can be significantly reduced, the amount of electricity used as the power source for the compressor can be reduced.
■ 水位確認の為のロック出入り、シャフト昇降の手間
が省け、安全管理面で災害発生率が低下する。■ Eliminates the hassle of going in and out of the lock to check the water level and going up and down the shaft, reducing the accident rate in terms of safety management.
■ 不慮の河川増水に対して園内水位の確認と調整が素
早く確実に行なわれ、園内浸水等による機器破損、使用
不能事態を回避でき、工程に与える影響を防止でき、修
理費も不要となる。■ The water level in the park can be checked and adjusted quickly and reliably in the event of an unexpected rise in river water, avoiding equipment damage or unusability due to flooding in the park, preventing any impact on processes, and eliminating the need for repair costs.
■ 作業休止中のエアーブローが発生しない為、河川の
汚濁、ケーソン外部への噴出等の公害防止につながる。■ Air blowing does not occur during work stoppages, which helps prevent pollution such as river pollution and caissons blowing out.
第１図はこの発明による実施例の全体概略図、第２図（
ａ） 、 （ｂ）は函内作業時及び休止時の空気圧、水
位検出状態を示す概略図である。
１・・ケーソン、２・・作業室
３・・コンプレッサー、４・・圧力調整装置５・・送気
管、６・・圧力測定器
７・・水位測定器、ＬＷ・・河川水位
ＬＷ’ ・・函内水位、ＬＣ・・刃口先端高さ。FIG. 1 is an overall schematic diagram of an embodiment according to the present invention, and FIG. 2 (
a) and (b) are schematic diagrams showing air pressure and water level detection states during work inside the box and during rest. 1...Caisson, 2...Working room 3...Compressor, 4...Pressure regulator 5...Air pipe, 6...Pressure measuring device 7...Water level measuring device, LW...River water level LW'...Box Internal water level, LC...height of the tip of the blade.
Claims (1)
と、函内の水位を計測する水位測定器を配置し、函内作
業中は圧力測定器の計測値に基いて、作業休止中は水位
測定器の計測値に基いて、ケーソン外に配置された圧力
調整装置により送気圧力を調整し、函内水位を適正に維
持することを特徴とするニユーマチツクケーソン工事に
おける函内水位調整方法。A pressure measuring device that measures the air pressure inside the box and a water level measuring device that measures the water level inside the box are installed inside the caisson box.During work inside the box, the pressure measuring device measures the pressure, and when the work is stopped, the pressure measuring device measures the water level inside the box. Neumatic water level adjustment in caisson construction in which the water level inside the caisson is maintained at an appropriate level by adjusting the air supply pressure using a pressure regulating device placed outside the caisson based on the measured value of the water level measuring device. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1968887A JPS63189529A (en) | 1987-01-30 | 1987-01-30 | Regulation of water level in caisson in pneumatic caisson work |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1968887A JPS63189529A (en) | 1987-01-30 | 1987-01-30 | Regulation of water level in caisson in pneumatic caisson work |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63189529A true JPS63189529A (en) | 1988-08-05 |
Family
ID=12006181
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1968887A Pending JPS63189529A (en) | 1987-01-30 | 1987-01-30 | Regulation of water level in caisson in pneumatic caisson work |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63189529A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006348482A (en) * | 2005-06-13 | 2006-12-28 | Shiraishi Corp | System for automatically adjusting water level in workroom in pneumatic caisson construction method, method and program for managing water level in workroom in pneumatic caisson construction method, and recording medium |
| JP2010281149A (en) * | 2009-06-05 | 2010-12-16 | Taisei Corp | Caisson immersion method and water gauge for caisson |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6019376A (en) * | 1983-06-03 | 1985-01-31 | アメリカン・テレフオン・アンド・テレグラフ・カムパニ− | 3 television signal time frequency multiplexing technique |
| JPS6019376U (en) * | 1983-07-18 | 1985-02-09 | 株式会社シマノ | spinning reel |
-
1987
- 1987-01-30 JP JP1968887A patent/JPS63189529A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6019376A (en) * | 1983-06-03 | 1985-01-31 | アメリカン・テレフオン・アンド・テレグラフ・カムパニ− | 3 television signal time frequency multiplexing technique |
| JPS6019376U (en) * | 1983-07-18 | 1985-02-09 | 株式会社シマノ | spinning reel |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006348482A (en) * | 2005-06-13 | 2006-12-28 | Shiraishi Corp | System for automatically adjusting water level in workroom in pneumatic caisson construction method, method and program for managing water level in workroom in pneumatic caisson construction method, and recording medium |
| JP2010281149A (en) * | 2009-06-05 | 2010-12-16 | Taisei Corp | Caisson immersion method and water gauge for caisson |
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