JPH0324937B2 - - Google Patents
Info
- Publication number
- JPH0324937B2 JPH0324937B2 JP59137995A JP13799584A JPH0324937B2 JP H0324937 B2 JPH0324937 B2 JP H0324937B2 JP 59137995 A JP59137995 A JP 59137995A JP 13799584 A JP13799584 A JP 13799584A JP H0324937 B2 JPH0324937 B2 JP H0324937B2
- Authority
- JP
- Japan
- Prior art keywords
- suction head
- sludge
- dredging
- amount
- acoustic
- 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
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/26—Indicating devices
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
- E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
- E02F3/907—Measuring or control devices, e.g. control units, detection means or sensors
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Measurement Of Velocity Or Position Using Acoustic Or Ultrasonic Waves (AREA)
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は汚泥浚渫船の浚渫土量検出方法に関す
るものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for detecting the amount of dredged soil in a sludge dredger.
従来、海底の汚泥を浚渫する場合には、第１図
に示すごとく、汚泥浚渫船１の船体に上下に揺動
可能なラダー２を設け、その先端にサクシヨンヘ
ツド３を設けると共に、汚泥浚渫船１の船体を、
海底に打込まれたスパツド４を中心に回転可能に
固定しており、その船体をスイングさせながら、
サクシヨンヘツド３で汚泥５を掘削し、そして、
その掘削した汚泥５をポンプアツプしているが、
この汚泥浚渫船１においては、特に高い施工精度
が要求され、このために目に見えない海底での掘
削状況を何らかの形で知ることが必要となり、
種々の試みがなされている。 Conventionally, when dredging sludge on the seabed, as shown in FIG. of,
It is rotatably fixed around a spud 4 driven into the seabed, and while the hull swings,
Sludge 5 is excavated with suction head 3, and
The excavated sludge 5 is pumped up,
In this sludge dredger 1, particularly high construction accuracy is required, and for this reason, it is necessary to know in some way the excavation status on the seabed, which is invisible to the naked eye.
Various attempts have been made.
また、浚渫作業によつて浚渫した汚泥の土量を
得るためには、従来、浚渫工事開始前に音響測深
器により浚渫区域の水深を測定しておき、浚渫工
事終了後に済度その水深を測定することにより、
浚渫土量を得ていたが、この場合、浚渫中には浚
渫土量が把握できないので工事の進捗状況、能率
がわからず、施工工程をたてる上で問題があつ
た。 In addition, in order to obtain the volume of sludge dredged during dredging work, conventionally, the water depth in the dredging area is measured using an acoustic sounder before the dredging work begins, and the water depth is then measured after the dredging work is completed. By this,
The amount of dredged soil was obtained, but in this case, the amount of dredged soil could not be ascertained during dredging, so the progress and efficiency of the construction work could not be determined, which caused problems in planning the construction schedule.
そこで本発明は、前記従来の問題点を解消し、
浚渫工事中に直ちにその浚渫土量の算定ができ、
工事の進捗状況を刻々つかむことができると共
に、正確な浚渫土量を得ることを目的としたもの
である。
Therefore, the present invention solves the above-mentioned conventional problems,
The amount of dredged soil can be calculated immediately during dredging work.
The purpose is to be able to grasp the progress of the construction work from moment to moment and to obtain accurate amounts of dredged soil.
即ち、本発明の汚泥浚渫船の浚渫土量検出方法
は、船体をスイングしながらラダーの先端に設け
たサクシヨンヘツドにより海底の汚泥を浚渫する
汚泥浚渫船において、該サクシヨンヘツドのスイ
ング角度を検知するジヤイロコンパス及びそのス
イング方向とほぼ直角な前方と後方とに該サクシ
ヨンヘツドの海底の泥面からの距離を測定可能な
音響測深器をそれぞれ設け、上記ジヤイロコンパ
スにより検知するスイング角度と、各音響測深器
による測定値により検知する浚渫施工深さとによ
り浚渫土量を算定することにより構成される。
That is, the method for detecting the amount of dredged soil in a sludge dredger according to the present invention is a sludge dredger that dredges sludge on the seabed using a suction head provided at the tip of a rudder while swinging the hull, and a gyroscope and a gyroscope for detecting the swing angle of the suction head. Acoustic sounders capable of measuring the distance of the suction head from the mud surface of the seabed are installed at the front and rear sides, which are almost perpendicular to the swing direction, and the swing angle detected by the above-mentioned gyroscope and the measurement by each acoustic sounder are installed. It is constructed by calculating the amount of dredged soil based on the dredging depth detected by the value.
以下図面を参照して本発明の浚渫土量検出方法
を適用した実施例について説明するが、本実施例
は第１図に示すごとく、船体をスイングさせなが
ら、ラダー２の先端に設けたサクシヨンヘツド３
により海底の汚泥５を浚渫するものであり、第１
図と同様に設けられたサクシヨンヘツド３には、
第２図に示すごとく船体のスイング方向Ｓの左右
方向、即ち前方Ｒ及び後方Ｌ及び第３図に示すご
とく、スイング方向Ｓとほぼ直角な前方Ｆ及び後
方Ｂに、このサクシヨンヘツド３の海底の汚泥５
の泥面からの距離を測定可能な音響測深器６Ｌ，
６Ｒ，６Ｆ，６Ｂがそれぞれ設けられると共に、
このサクシヨンヘツド３の上方にはサクシヨンヘ
ツド３と海水面Ｗからの距離を測定可能な音響測
深器６Ｈを設けている。
An embodiment in which the method for detecting the amount of dredged soil of the present invention is applied will be described below with reference to the drawings.As shown in FIG.
The first step is to dredge sludge 5 from the seabed.
The suction head 3, which is installed in the same way as shown in the figure, has
As shown in Fig. 2, the sludge on the seabed of this suction head 3 is deposited in the left and right directions of the swing direction S of the ship, that is, the front R and the rear L, and as shown in Fig. 3, in the front F and rear B, which are almost perpendicular to the swing direction S. 5
Acoustic sounder 6L that can measure the distance from the mud surface of
6R, 6F, and 6B are provided respectively, and
An acoustic depth sounder 6H capable of measuring the distance between the suction head 3 and the sea level W is provided above the suction head 3.
また、第１図に示すように、船体をスイングし
ながらラダー２の先端に設けたサクシヨンヘツド
３により海底の汚泥５を浚渫する汚泥浚渫船１に
は、サクシヨンヘツド３のスイング角度を検知す
るジヤイロコンパス８が設けられており、これに
より浚渫時のスイング幅を検出することができ
る。 In addition, as shown in FIG. 1, the sludge dredger 1, which dredges sludge 5 on the ocean floor using a suction head 3 installed at the tip of a rudder 2 while swinging the hull, is equipped with a gyroscope compass 8 that detects the swing angle of the suction head 3. is provided, which makes it possible to detect the swing width during dredging.
また、この汚泥浚渫船１の船上には、第４図に
示すデイスプレイ（CRT）７が設置されており、
このデイスプレイ７上には基準海面Ws及び浚渫
施工部の浚渫前深度ならびに計画浚渫深度からな
る計画浚渫断面を表示し、これらに対して上記各
サクシヨンヘツド３の前後、左右の泥面からの距
離の各測定値に基準海面Wsに対する潮位Ｔの補
正を行なつた後、左右の距離の軌跡をL′，R′で、
そして前後の距離の軌跡をF′，B′でそれぞれ表示
している。 Additionally, a display (CRT) 7 shown in Fig. 4 is installed on board the sludge dredger 1.
On this display 7, a planned dredging cross section consisting of the reference sea level Ws, the pre-dredging depth of the dredging area, and the planned dredging depth is displayed, and the distances from the mud surface on the front, back, right and left sides of each suction head 3 are displayed on the display 7. After correcting the tide level T with respect to the reference sea level Ws to the measured value, the trajectory of the left and right distance is L′, R′,
The trajectory of the distance before and after is displayed as F' and B', respectively.
上記の表示により、運転者はその浚渫作業の施
工の妥当性を容易に確認することができ、基準海
面Wsからどの位の位置を掘削中なのか確認でき、
また掘削中の土厚の状況も確認でき、適正でない
場合は手動などにより、これに対応した操作を行
なうことができる。 The above display allows the operator to easily confirm the validity of the dredging work, and to confirm how far from the reference sea level Ws the operator is excavating.
You can also check the soil thickness during excavation, and if it is not appropriate, you can take appropriate action manually.
潮位情報は、施工場所の付近に設置された潮位
計によるか、または満潮、干潮の時刻と潮位を設
定し、その間は正弦曲線によつて近似することに
よつて得られる。 Tide level information can be obtained from a tide gauge installed near the construction site, or by setting the times and tide levels of high tide and low tide, and approximating them using a sine curve.
なお、土厚のデイスプレイ７上の表示につき、
第５図を参照して説明すると、スイング方向Ｓに
対して直角方向のサクシヨンヘツド３の前方向に
設けた未浚渫域泥面深度検出用の音響測深器６Ｆ
の出力のトレンドグラフF′（ｘ）及び後方向に設
けた音響測深器６Ｂの出力のトレンドグラフ
B′（ｘ）に対し、土厚はＤ（x0）＝F′（x0）−B′（x
0）
で表示される。 In addition, regarding the display on Doatsu's display 7,
To explain with reference to FIG. 5, an acoustic sounder 6F for detecting mud surface depth in an undredged area is installed in front of the suction head 3 in a direction perpendicular to the swing direction S.
Trend graph of the output of F′(x) and trend graph of the output of the acoustic sounder 6B installed in the rear direction
For B′(x), the soil thickness is D(x 0 )=F′(x 0 )−B′(x
0 )
is displayed.
ここで、x0は浚渫後泥面深度検出用音響測深器
の通過位置を示し、B′（x0）は浚渫後泥面深度検
出用音響測深器出力から次式によつて補正した値
（基準水面Wsからの深度）である。 Here, x 0 indicates the passing position of the acoustic sounder for detecting mud surface depth after dredging, and B′(x 0 ) is the value corrected from the output of the acoustic sounder for detecting mud surface depth after dredging by the following formula ( depth from the reference water surface Ws).
B′（x0）＝Ｂ（x0）＋Ｈ（x0）−Ｔ（t2）
ここで、Ｂ（x0）は音響測深器からの生出力信
号であり、Ｈ（x0）はサクシヨンヘツド３の海水
面迄の距離、そしてＴ（t2）はＢがx0を通過した
時間t2における潮位である。更に、F′（x0）は未
浚渫域泥面深度検出用音響測深器出力を次式によ
つて補正した値のx0における記録である。 B'(x 0 ) = B(x 0 ) + H(x 0 ) - T(t 2 ) where B(x 0 ) is the raw output signal from the echo sounder and H(x 0 ) is the suction head 3, and T(t 2 ) is the tide level at time t 2 when B passes x 0 . Furthermore, F′(x 0 ) is the record at x 0 of the value corrected by the following formula for the output of the acoustic sounder for detecting the depth of the mud surface in the undredged area.
F′（x0）＝Ｆ（x0）＋Ｈ（x0）−Ｔ（t2）
ここでＴ（t1）はＦがx0を通過した時間t1におけ
る潮位である。 F'( x0 )=F( x0 )+H( x0 )-T( t2 ) Here, T( t1 ) is the tide level at time t1 when F passes x0 .
また、上記本実施例の浚渫土量検出方法に使用
されるブロツクダイヤグラムの一例を第６図に示
している。 Further, FIG. 6 shows an example of a block diagram used in the method for detecting the amount of dredged soil according to the present embodiment.
上記の構成からなる本発明の汚泥浚渫船の浚渫
土量検出方法では、まずサクシヨンヘツド３のス
イング方向Ｓとほぼ直角な前方Ｆと、後方Ｂとに
サクシヨンヘツド３の海底の汚泥５の泥面からの
距離を測定可能な音響測深器６Ｆ，６Ｂをそれぞ
れサクシヨンヘツド３より約100cm程度離れた位
置に設けることにより、サクシヨンヘツド３のス
イングによる盛り上り及び蹴り上りの影響を受け
ない位置の汚泥５の浚渫前及び浚渫後の水深が測
定される。何故ならば、第７図に示すごとく、例
えばＮ列の浚渫前の水深と浚渫後の水深を測定す
ることができるのは、Ｎ−１列を浚渫するとき
に、サクシヨンヘツドの前方に設けた音響測深器
ＦによりＮ列の浚渫前の水深を測定し、Ｎ＋１列
を浚渫するときに、サクシヨンヘツドの後方に設
けた音響測深器ＢによりＮ列の浚渫後の水深を測
定することにより可能である。
In the method for detecting the amount of dredged soil in a sludge dredger of the present invention having the above-described configuration, first, the distance from the mud surface of the sludge 5 on the seabed of the suction head 3 is determined between the front F, which is substantially perpendicular to the swing direction S of the suction head 3, and the rear B, which are approximately perpendicular to the swing direction S of the suction head 3. By installing the acoustic sounders 6F and 6B that can measure the sludge at a position approximately 100 cm away from the suction head 3, the sludge 5 can be removed before and during dredging in a position that is not affected by the heave and kick-up caused by the swing of the suction head 3. The subsequent water depth is measured. This is because, as shown in Fig. 7, for example, the water depth before and after dredging of the N row can be measured using the acoustic device installed in front of the suction head when dredging the N-1 row. This is possible by measuring the water depth before dredging of the N row with a sounder F, and when dredging the N+1 row, measuring the water depth after the dredging of the N row with an acoustic sounder B installed behind the suction head.
そこで、音響測深器６Ｆで測定した位置と同じ
位置の音響測深器６Ｂによる測定を次のスイング
の浚渫施工時に行なえば、ほぼ正確な施工深さを
検知することができる。 Therefore, if the measurement using the acoustic depth sounder 6B at the same position as that measured by the acoustic depth sounder 6F is performed during the dredging construction of the next swing, it is possible to detect a substantially accurate construction depth.
次に、ジヤイロコンパス８により前記のごとく
スイング幅を検出することにより、施工深さとス
イング幅とにより直ちに浚渫土量の算定ができ
る。 Next, by detecting the swing width using the gyroscope 8 as described above, the amount of dredged soil can be immediately calculated based on the construction depth and the swing width.
また、サクシヨンヘツド３のスイングスピード
を検出することにより、浚渫作業の効率を知るこ
ともできる。 Furthermore, by detecting the swing speed of the suction head 3, it is possible to know the efficiency of dredging work.
以上に説明した本発明の汚泥浚渫船の浚渫土量
検出方法を採用すれば、従来のように浚渫工事開
始前と工事終了後との２度にわたつて浚渫区域の
水深を測定することなしに、その浚渫作業中に直
ちに浚渫土量が得られるので、浚渫作業中にどの
程度の土量を浚渫しているのかが刻々わかり、工
事の進捗状況がつかめ、工程管理が容易になると
いう利点がある。
By adopting the method for detecting the amount of dredged soil by a sludge dredger of the present invention as described above, the water depth of the dredged area can be measured without having to measure the water depth twice, before the start of dredging work and after the completion of dredging work, as in the conventional method. Since the volume of dredged soil can be obtained immediately during the dredging work, it is possible to know from time to time how much soil is being dredged during the dredging work, which has the advantage of being able to grasp the progress status of the construction work and making process management easier. .
第１図は汚泥浚渫船の概略側面図、第２図及び
第３図は本発明の実施例における汚泥浚渫船のサ
クシヨンヘツドに設けた各音響測深器の作用説明
図、第４図は本発明の実施例における汚泥浚渫船
上に設けられるデイスプレイの正面図、第５図は
第４図のデイスプレイに示される土厚の表示を定
義するための拡大掘削図、第６図は本実施例の浚
渫土量検出方法のブロツクダイヤグラム、第７図
はサクシヨンヘツドの移動による水深測定方法を
示す説明図である。
１……汚泥浚渫船、２……ラダー、３……サク
シヨンヘツド、５……汚泥、６Ｌ，６Ｒ，６Ｂ，
６Ｆ，６Ｈ……音響測深器、８……ジヤイロコン
パス。
Fig. 1 is a schematic side view of a sludge dredger, Figs. 2 and 3 are explanatory diagrams of the operation of each acoustic sounder installed at the suction head of a sludge dredger in an embodiment of the present invention, and Fig. 4 is an embodiment of the present invention. 5 is an enlarged excavation diagram for defining the display of soil thickness shown on the display in FIG. 4, and FIG. 6 is a method for detecting the amount of dredged soil in this embodiment. The block diagram of FIG. 7 is an explanatory diagram showing a method of measuring water depth by moving the suction head. 1... Sludge dredger, 2... Rudder, 3... Suction head, 5... Sludge, 6L, 6R, 6B,
6F, 6H... Echo sounder, 8... Gyroscope compass.
Claims (1)
たサクシヨンヘツドにより海底の汚泥を浚渫する
汚泥浚渫船において、該サクシヨンヘツドのスイ
ング角度を検知するジヤイロコンパス及びそのス
イング方向とほぼ直角な前方と後方とに該サクシ
ヨンヘツドの海底の泥面からの距離を測定可能な
音響測深器をそれぞれ設け、上記ジヤイロコンパ
スにより検知するスイング角度と、各音響測深器
による測定値により検知する浚渫施工深さとによ
り浚渫土量を算定することを特徴とする汚泥浚渫
船の浚渫土量検出方法。1. In a sludge dredger that dredges sludge on the seabed using a suction head installed at the tip of the rudder while swinging the hull, there is a gyroscope compass that detects the swing angle of the suction head, and a suction head installed at the front and rear sides that are approximately perpendicular to the swing direction. An acoustic sounder capable of measuring the distance from the muddy surface of the seabed is installed, and the amount of dredged soil is calculated based on the swing angle detected by the above-mentioned gyroscope and the dredging depth detected from the measurement value of each acoustic sounder. A method for detecting the amount of dredged soil by a sludge dredger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59137995A JPS6117644A (en) | 1984-07-05 | 1984-07-05 | Detection of dredged sludge amount in sludge dredger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59137995A JPS6117644A (en) | 1984-07-05 | 1984-07-05 | Detection of dredged sludge amount in sludge dredger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6117644A JPS6117644A (en) | 1986-01-25 |
| JPH0324937B2 true JPH0324937B2 (en) | 1991-04-04 |
Family
ID=15211601
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59137995A Granted JPS6117644A (en) | 1984-07-05 | 1984-07-05 | Detection of dredged sludge amount in sludge dredger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6117644A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL2004442C2 (en) * | 2010-03-22 | 2011-09-23 | Baggerwerken Decloedt & Zn N V | Cutter suction dredger for dredging ground and method for dredging using this cutter suction dredger. |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS566520Y2 (en) * | 1972-08-25 | 1981-02-13 | ||
| JPS5164738A (en) * | 1974-12-02 | 1976-06-04 | Wakachiku Constr | Onkyosokushinki oryosuru hedorojokyoshunsetsuhoho |
-
1984
- 1984-07-05 JP JP59137995A patent/JPS6117644A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6117644A (en) | 1986-01-25 |
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