JPH0324538B2 - - Google Patents
Info
- Publication number
- JPH0324538B2 JPH0324538B2 JP59137994A JP13799484A JPH0324538B2 JP H0324538 B2 JPH0324538 B2 JP H0324538B2 JP 59137994 A JP59137994 A JP 59137994A JP 13799484 A JP13799484 A JP 13799484A JP H0324538 B2 JPH0324538 B2 JP H0324538B2
- Authority
- JP
- Japan
- Prior art keywords
- suction head
- sludge
- dredging
- depth
- 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 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施工管理方法に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a construction management method for 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.
そこで、従来の汚泥浚渫船を運転する際の施工
管理方法としては、浚渫土厚の管理及び浚渫後の
水深の確認を目的としてサクシヨンヘツド３の左
右、即ちサクシヨンヘツド３のスイング方向の前
方及び後方に音響測深器をそれぞれ設置してい
る。 Therefore, as a construction management method when operating a conventional sludge dredger, acoustic soundings are carried out on the left and right sides of the suction head 3, that is, in front and behind the swing direction of the suction head 3, for the purpose of controlling the thickness of the dredged soil and confirming the water depth after dredging. Each device is installed.
しかしながら、上記のごとく、サクシヨンヘツ
ド３に設置された音響測深器による浚渫後の水深
測定結果は、サクシヨンヘツド３の移動に伴う、
そのスイング方向の前方の汚泥５の盛り上り及び
その後方の汚泥５の蹴り上りが影響して正確なも
のとはいい難く、施工の妥当性確認は浚渫後に、
別に実施される測深を持つて行なわれるのが実状
である。 However, as mentioned above, the water depth measurement results after dredging by the acoustic depth sounder installed in the suction head 3 are as follows:
It is difficult to say that it is accurate due to the influence of the swelling of sludge 5 in front of the swing direction and the kicking up of sludge 5 behind it, and the validity of construction should be confirmed after dredging.
In reality, this is done with a separate sounding.
そのため、通常、相当量の余裕を見た余掘りを
考慮してサクシヨンヘツド３の深度が決定される
ことになる。 Therefore, the depth of the suction head 3 is usually determined by taking into account a considerable amount of extra digging.
一方、汚泥浚渫作業の運転者は、多くの情報に
気を配つて施工を進めなければならないが、それ
らは繁雑であると共に、それらの有機的な結合及
びそれに基づく判断はすべて運転者が受持つてお
り、更に高い施工精度や効率を目差す場合、従来
の施工管理方法では不可能であつた。 On the other hand, the operator of sludge dredging work has to pay attention to a lot of information while proceeding with the construction work, which is complicated, and the operator is in charge of all the organic combinations of these and decisions based on it. Therefore, when aiming for even higher construction accuracy and efficiency, it was impossible with conventional construction management methods.
そこで本発明は、前記従来の汚泥浚渫船の汚泥
浚渫時における問題点を解消し、施工精度の向上
をはかり、効率の良い浚渫作業を行ないうる施工
管理方法を提供することを目的としたものであ
る。
SUMMARY OF THE INVENTION Therefore, it is an object of the present invention to provide a construction management method that solves the problems encountered during sludge dredging by the conventional sludge dredger, improves construction accuracy, and enables efficient dredging work. .
即ち、本発明の汚泥浚渫船の施工管理方法は、
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、そのサクシヨンヘツドの前方と
後方のほかに、更にその左側と右側に該サクシヨ
ンヘツドの海底の泥面からの距離を測定する音響
測深器をそれぞれ設け、それらの音響測深器によ
る測定値によりサクシヨンヘツドの前後と左右の
浚渫施工深さを検知することを特徴とする汚泥浚
渫船の施工管理方法からなる。
That is, the construction management method for a sludge dredger of the present invention is as follows:
In a sludge dredger that dredges sludge from the ocean floor using a suction head installed at the tip of the rudder while swinging the hull, in addition to the front and rear of the suction head, there are also signs on the left and right sides of the suction head that indicate the distance from the mud surface of the ocean floor. This method consists of a construction management method for a sludge dredger, which is characterized by installing acoustic depth sounders for measurement, and detecting the dredging depth before and after the suction head, and on the left and right sides of the suction head based on the measured values by the acoustic sounders.
以下図面を参照して本発明の施工管理方法を適
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，６
Ｒ，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 construction management method of the present invention is applied will be described below with reference to the drawings. In this embodiment, as shown in Fig. 1, while swinging the hull,
The suction head 3 installed at the tip of the rudder 2 dredges sludge 5 on the seabed.
As shown in the figure, the swing direction of the hull is S left and right,
That is, as shown in the front R and rear L and FIG.
Front F and rear B almost perpendicular to swing direction S
In addition, acoustic sounders 6L, 6 capable of measuring the distance from the surface of the sludge 5 on the seabed of the suction head 3 are installed.
R, 6F, and 6B, and above the suction head 3, an acoustic depth sounder 6H capable of measuring the distance between the suction head 3 and the sea level W is provided.
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）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) as shown in Figure 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 the mud surface depth in an undredged area is installed in the front direction 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 (standard depth from the 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（t1）
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( t1 ) Here, T( t1 ) is the tide level at time t1 when F passes x0 .
また、上記本実施例の施工検知方法に使用され
るブロツクダイヤグラムの一例を第６図に示して
いる。 FIG. 6 shows an example of a block diagram used in the construction detection method of this embodiment.
上記の構成からなる本発明の汚泥浚渫船の施工
管理方法では、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。
In the construction management method for a sludge dredger of the present invention having the above configuration, first, the distance from the mud surface of the sludge 5 on the seabed of the suction head 3 is measured at the front F and the rear B, which are almost perpendicular to the swing direction S of the suction head 3. By installing possible acoustic depth sounders 6F and 6B at positions approximately 100 cm away from the suction head 3, the sludge 5 can be collected before and after dredging in a position that is not affected by the heave and kick-up caused by the swing of the suction head 3. Water depth is measured.
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。 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. N by depth sounder F
This is possible by measuring the water depth before the dredging of the row N+1 and then measuring the water depth after the dredging of the N row using an acoustic sounder B installed behind the suction head when dredging the N+1 row.
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による測定の次のスイング
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 dredging is carried out in the next swing after the measurement by the acoustic sounder 6B at the same position as that measured by the acoustic sounder 6F, it is possible to detect a substantially accurate construction depth.
次に、サクシヨンヘツド３のスイング方向Ｓの
前方に音響測深器６Ｒを設けているので、浚渫直
前の汚泥５の天端を検知でき、サクシヨンヘツド
３が汚泥５に対して適当な浚渫深さにあるかを検
知することができる。 Next, since the acoustic sounder 6R is provided in front of the suction head 3 in the swing direction S, it is possible to detect the top of the sludge 5 just before dredging, and check whether the suction head 3 is at an appropriate dredging depth for the sludge 5. can be detected.
更に、サクシヨンヘツド３のスイング方向Ｓの
後方に音響測深器６Ｌを設けているので、サクシ
ヨンヘツド３による浚渫中の汚泥５の蹴り上りを
考慮した浚渫直後の汚泥５の蹴り上り高さを検知
することができる。 Furthermore, since the acoustic sounder 6L is provided behind the suction head 3 in the swing direction S, it is possible to detect the kick-up height of the sludge 5 immediately after dredging, taking into account the kick-up of the sludge 5 during dredging by the suction head 3. can.
そこで、音響測深器６Ｂと６Ｌとによる各測定
値の相対的な関係を数回のスイングにおいてつか
んでおけば、６Ｌにおいてある程度仕上面の管理
が可能である。 Therefore, if the relative relationship between the measured values by the acoustic depth sounders 6B and 6L is grasped in several swings, it is possible to manage the finished surface to some extent in 6L.
以上に説明した本発明の汚泥浚渫船の施工管理
方法を採用すれば、汚泥浚渫作業時における施工
精度の向上をはかることができ、浚渫時の掘り残
しの防止と、掘り過ぎによる損失を極小化できる
と共に、浚渫能率を最大に高めうるという効果が
ある。
By adopting the construction management method for a sludge dredger of the present invention described above, it is possible to improve construction accuracy during sludge dredging work, prevent unexcavation during dredging, and minimize losses due to over-digging. At the same time, it has the effect of maximizing dredging efficiency.
更に詳しくは、サクシヨンヘツドの左側と右側
に音響測深器を設けただけでは、スイング方向前
方の汚泥の盛り上り、スイング方向後方の汚泥の
蹴り上りにより、浚渫した後の海底面の深さ及び
浚渫した汚泥（土砂）の厚さは確認できないのに
対し、本発明はサクシヨンヘツドの前方と後方に
設けた音響測深器により汚泥の盛り上りや蹴り上
りの影響を受けずに、正確に浚渫後の海底面の深
さ及び浚渫した汚泥（土砂）の厚さを確認でき、
更にサクシヨンヘツドの左右に設けた音響測深器
で得られる値と、サクシヨンヘツドの前後方向に
設けた音響測深器で得られる値との相対的な関係
（浚渫する汚泥の土性により異なる）をつかむこ
とにより、余掘りを少なくできるという効果を有
する。 More specifically, if only the acoustic sounders were installed on the left and right sides of the suction head, the sludge would build up in the front of the swing direction and the sludge would kick up in the back of the swing direction, resulting in a decrease in the depth of the seabed after dredging and the dredged area. While the thickness of sludge (earth and sand) cannot be confirmed, the present invention uses acoustic sounders installed in front and rear of the suction head to accurately measure the seabed surface after dredging without being affected by sludge heaving or kicking up. You can check the depth of the dredged sludge (soil) and the thickness of the dredged sludge (earth and sand).
Furthermore, by understanding the relative relationship between the values obtained with the acoustic sounders installed on the left and right sides of the suction head and the values obtained with the acoustic sounders installed in the front and rear directions of the suction head (which varies depending on the soil texture of the sludge to be dredged), This has the effect of reducing over-digging.
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図は本実施例の施
工管理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。
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 soil thickness displayed on the display in FIG. 4, and FIG. 6 is a block diagram of the construction management method of this embodiment. The diagram, 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.
Claims (1)
の先端に設けたサクシヨンヘツドにより海底の汚
泥を浚渫する方法において、該サクシヨンヘツド
の前方と後方のほかに、更にその左側と右側に該
サクシヨンヘツドの海底の泥面からの距離を測定
する音響測深器をそれぞれ設け、それらの音響測
深器による測定値によりサクシヨンヘツドの前後
と左右の浚渫施工深さを検知することを特徴とす
る汚泥浚渫船の施工管理方法。1. In a method of dredging sludge on the seabed using a suction head installed at the tip of the rudder while swinging the hull of a sludge dredger, in addition to the front and rear of the suction head, there are also areas on the left and right sides of the suction head from the muddy surface of the seabed. 1. A construction management method for a sludge dredger, characterized in that an acoustic sounder is installed to measure the distance between the suction head and the dredging depth on each side of the suction head.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13799484A JPS6117643A (en) | 1984-07-05 | 1984-07-05 | Construction administration system for sludge dredger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13799484A JPS6117643A (en) | 1984-07-05 | 1984-07-05 | Construction administration system for sludge dredger |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6117643A JPS6117643A (en) | 1986-01-25 |
| JPH0324538B2 true JPH0324538B2 (en) | 1991-04-03 |
Family
ID=15211577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13799484A Granted JPS6117643A (en) | 1984-07-05 | 1984-07-05 | Construction administration system for sludge dredger |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6117643A (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3078813B2 (en) * | 1989-04-27 | 2000-08-21 | アース製薬株式会社 | Wood pest control composition |
| JP2547683B2 (en) * | 1991-09-18 | 1996-10-23 | 株式会社島精機製作所 | Yarn cutting device for flat knitting machine |
| US6808010B2 (en) | 2001-03-13 | 2004-10-26 | Howmet Research Corporation | Method for treating ceramic cores |
| JP5900817B2 (en) * | 2011-10-24 | 2016-04-06 | 五洋建設株式会社 | Pump dredger and dredging method using pump dredger |
| CN109750700A (en) * | 2019-03-12 | 2019-05-14 | 中交天津航道局有限公司 | A kind of cutter suction dredger gantry lifting automatic controller |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5164738A (en) * | 1974-12-02 | 1976-06-04 | Wakachiku Constr | Onkyosokushinki oryosuru hedorojokyoshunsetsuhoho |
-
1984
- 1984-07-05 JP JP13799484A patent/JPS6117643A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6117643A (en) | 1986-01-25 |
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