JPS6342749B2 - - Google Patents
Info
- Publication number
- JPS6342749B2 JPS6342749B2 JP18960481A JP18960481A JPS6342749B2 JP S6342749 B2 JPS6342749 B2 JP S6342749B2 JP 18960481 A JP18960481 A JP 18960481A JP 18960481 A JP18960481 A JP 18960481A JP S6342749 B2 JPS6342749 B2 JP S6342749B2
- Authority
- JP
- Japan
- Prior art keywords
- mud
- soil quality
- detector
- drag coefficient
- pipe
- 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
- 239000002689 soil Substances 0.000 claims description 20
- 238000001514 detection method Methods 0.000 claims description 12
- 230000005484 gravity Effects 0.000 claims description 9
- 239000010802 sludge Substances 0.000 claims description 7
- 238000012806 monitoring device Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 238000004062 sedimentation Methods 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Food Science & Technology (AREA)
- Analytical Chemistry (AREA)
- Geology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Medicinal Chemistry (AREA)
- Physics & Mathematics (AREA)
- Remote Sensing (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Treatment Of Sludge (AREA)
Description
【発明の詳細な説明】
本発明は、浚渫作業時に浚渫土質を自動的に検
出する浚渫土質検出装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a dredged soil quality detection device that automatically detects dredged soil quality during dredging work.
浚渫船での浚渫作業時とくに遠距離排送運転時
には、土砂の沈澱現象により揚泥量が制限され
る。このためオペレーターは、適性含泥率すなわ
ち沈澱を生じない範囲でしかもできるだけ高含泥
率で運転することが要求される。 During dredging operations using a dredger, especially during long-distance discharge operations, the amount of mud lifted is limited by the sedimentation phenomenon. Therefore, the operator is required to operate at an appropriate mud content, that is, as high as possible within a range that does not cause sedimentation.
この適正含泥率は、土質により大巾に変化す
る。このため従来は浚渫作業前に多数個所のサン
プリングをおこない、またそれまでの浚渫作業状
況をもとに土質を推測し、それに合つた適正含泥
率となるよう各機器を操作していた。 This appropriate mud content varies widely depending on the soil quality. For this reason, in the past, before dredging work, samples were taken at multiple locations, the soil quality was estimated based on the dredging work conditions up to that point, and each equipment was operated to achieve the appropriate mud content.
しかしこの方法では、サンプリングが不連続の
ため、土質が急激に変化している地層では推測ミ
スを生じるおそれがある。また土質の推測をオペ
レーターの感に頼つておこなうため、ある程度経
験を積んだオペレーターを必要とする。 However, since sampling is discontinuous with this method, there is a risk of making inference errors in geological strata where the soil quality changes rapidly. In addition, since the estimation of soil quality relies on the operator's intuition, an operator with a certain amount of experience is required.
しかも浚渫作業を自動的に運転する場合、土質
の変化を検出できない。このため最も厳しい条件
の土質に合せて適正含泥率を設定して余裕を大き
くとつた運転をせざるを得ず、この結果浚渫効率
が大巾に低下するなどの問題があつた。 Moreover, when dredging work is performed automatically, changes in soil quality cannot be detected. For this reason, it was necessary to operate with a large margin by setting an appropriate mud content according to the soil type under the most severe conditions, resulting in problems such as a drastic drop in dredging efficiency.
本発明は、上記事情に鑑みてなされたもので、
その目的とするところは、排泥管水平部の差圧に
もとづいて抗力係数（沈澱のし難さを示す係数
で、これが土質の違いを示す）を演算することに
より土質を算出し、もつて土質の変化に対応して
適正含泥率で運転することができる浚渫土質検出
装置を得んとするものである。 The present invention was made in view of the above circumstances, and
The purpose of this is to calculate the soil quality by calculating the drag coefficient (a coefficient that indicates the difficulty of sedimentation, which indicates the difference in soil quality) based on the differential pressure at the horizontal part of the sludge pipe. The object of the present invention is to obtain a dredged soil quality detection device that can be operated at an appropriate mud content in response to changes in soil quality.
すなわち本発明は、浚渫船上の排泥管水平部に
設けた泥水比重検出器、流速検出器及び二点間差
圧検出器と、上記各検出器の検出信号にもとづい
て排泥管内流体の抗力係数を演算する演算装置
と、同演算装置で演算された抗力係数の変動を表
示する監視装置とを具備してなる浚渫土質検出装
置である。 That is, the present invention uses a mud water specific gravity detector, a flow velocity detector, and a two-point differential pressure detector installed in the horizontal part of the sludge pipe on a dredger, and detects the drag force of the fluid in the sludge pipe based on the detection signals of each of the above-mentioned detectors. This is a dredged soil quality detection device that includes a calculation device that calculates a coefficient and a monitoring device that displays fluctuations in the drag coefficient calculated by the calculation device.
以下本発明を図示する実施例を参照して説明す
る。 The present invention will be described below with reference to illustrative embodiments.
第１図は浚渫装置に浚渫土質検出装置を取付け
た状態を示す説明図、第２図は同検出装置の電気
回路を示すブロツク図である。浚渫装置は、第１
図に示すように浚渫船の船体１にラダー２を取付
け、ラダー２の先端にカツター３を装着してい
る。ラダー２上には吸泥管４及び浚渫ポンプ５が
設けられ、又船体１内には排泥管６及び浚渫ポン
プ７が設けられ、これら浚渫ポンプ５，７により
泥水を吸泥管４、排泥管６から水上送泥管８に送
るようになつている。浚渫土質検出装置は、上記
排泥管６の水平部に泥水比重検出器９と流速検出
器１０とを設け、更に距離ｌをおいて２つの圧力
検出器１１，１２を設け、これら圧力検出器１
１，１２間に二点間差圧検出器１３を接続してい
る。 FIG. 1 is an explanatory diagram showing a state in which a dredged soil quality detection device is attached to a dredging device, and FIG. 2 is a block diagram showing an electric circuit of the detection device. The dredging equipment is
As shown in the figure, a rudder 2 is attached to a hull 1 of a dredger, and a cutter 3 is attached to the tip of the rudder 2. A mud suction pipe 4 and a dredging pump 5 are provided on the rudder 2, and a mud removal pipe 6 and a dredging pump 7 are provided in the hull 1. The mud is sent from the mud pipe 6 to the floating mud pipe 8. The dredged soil quality detection device is provided with a mud water specific gravity detector 9 and a flow velocity detector 10 in the horizontal part of the mud removal pipe 6, and further provided with two pressure detectors 11 and 12 at a distance l. 1
A two-point differential pressure detector 13 is connected between 1 and 12.
これら泥水比重検出器９、流速検出器１０及び
差圧検出器１３で検出した泥水比重γn、流速ｖ、
差圧ΔHの信号は、それぞれ演算装置１４に入力
される。演算装置１４では、これら検出値及び設
定値から下式にもとづいて抗力係数CDを求める。 Mud water specific gravity γ n , flow velocity v, detected by these mud water specific gravity detector 9, flow velocity detector 10, and differential pressure detector 13,
The signals of the differential pressure ΔH are each input to the calculation device 14. The arithmetic unit 14 calculates the drag coefficient C D from these detected values and set values based on the formula below.
ただし
λw：水運転時の管摩擦損失（マニユアルセツト）
ｌ：差圧取り出しの二点間距離（一定）
Ｄ：管内径（一定）
ｇ：動加速度（一定）
ｖ：管内流速
K1：定数（標準は81とし、調節可能とする）
K2：定数（標準は−1.5とし、調節可能とする）
CD：抗力係数
γn：泥水比重
γw：水の比重（マニユアルセツト）
γs：泥の直比重（マニユアルセツト）
演算装置１４で算出された抗力係数CDは、モ
ニター等の監視装置１５に入力してモニタリング
できるようにする。また、同時に自動運転制御装
置１６に入力して、この抗力係数の変化にもとづ
いて適正含泥率に維持しながら自動運転をおこな
う。 However, λ w : Pipe friction loss during water operation (manual set) l: Distance between two points for differential pressure extraction (constant) D: Pipe inner diameter (constant) g: Dynamic acceleration (constant) v: Flow velocity in the pipe K 1 : Constant (Standard is 81 and adjustable) K 2 : Constant (Standard is -1.5 and adjustable) C D : Drag coefficient γ n : Mud water specific gravity γ w : Water specific gravity (manual set) γ s : Direct Specific Gravity of Mud (Manual Set) The drag coefficient C D calculated by the calculation device 14 is input to a monitoring device 15 such as a monitor so that it can be monitored. At the same time, this is input to the automatic operation control device 16, and automatic operation is performed while maintaining an appropriate mud content based on this change in drag coefficient.
しかしてこの浚渫土質検出装置によれば、浚渫
時に遂次抗力係数を検出することができるので、
オペレーターの経験が浅くとも的確に土質を検知
して、そのときの土質に合つた適正含泥率で運転
することができる。また自動運転をおこなう場合
にも抗力係数にもとづいて沈澱することなく効率
よく運転することができる。 However, according to this dredged soil quality detection device, it is possible to detect the sequential drag coefficient during dredging.
Even if the operator is inexperienced, the system can accurately detect the soil quality and operate with the appropriate mud content that matches the soil quality at that time. Furthermore, when performing automatic operation, it is possible to operate efficiently without sedimentation based on the drag coefficient.
第１図及び第２図は本発明の一実施例を示し、
第１図は浚渫船に取付けた浚渫土質検出装置の説
明図、第２図は同検出装置の電気回路を示すブロ
ツク図である。
１……船体、２……ラダー、３……カツタ、４
……吸泥管、５，７……浚渫ポンプ、６……排泥
管、８……水上送泥管、９……泥水比重検出器、
１０……流速検出器、１１，１２……圧力検出
器、１３……二点間差圧検出器、１４……演算装
置、１５……監視装置、１６……自動運転制御装
置。
1 and 2 show an embodiment of the present invention,
FIG. 1 is an explanatory diagram of a dredged soil quality detection device installed on a dredger, and FIG. 2 is a block diagram showing an electric circuit of the detection device. 1...Hull, 2...Rudder, 3...Katsuta, 4
...Sludge suction pipe, 5,7...Dredging pump, 6...Sludge removal pipe, 8...Water mud feeding pipe, 9...Mud water specific gravity detector,
10... Flow velocity detector, 11, 12... Pressure detector, 13... Two-point differential pressure detector, 14... Arithmetic device, 15... Monitoring device, 16... Automatic operation control device.
Claims (1)
出器、流速検出器及び二点間差圧検出器と、上記
各検出器の検出信号にもとづいて排泥管内流体の
抗力係数を演算する演算装置と、同演算装置で演
算された抗力係数の変動を表示する監視装置とを
具備してなる浚渫土質検出装置。1 Calculate the drag coefficient of the fluid in the sludge pipe based on the mud specific gravity detector, flow velocity detector, and two-point differential pressure detector installed on the horizontal part of the sludge pipe on the dredger, and the detection signals of each of the above detectors. A dredged soil quality detection device comprising a calculation device and a monitoring device that displays fluctuations in a drag coefficient calculated by the calculation device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18960481A JPS5890168A (en) | 1981-11-26 | 1981-11-26 | Detecting device for dredged earth |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18960481A JPS5890168A (en) | 1981-11-26 | 1981-11-26 | Detecting device for dredged earth |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5890168A JPS5890168A (en) | 1983-05-28 |
| JPS6342749B2 true JPS6342749B2 (en) | 1988-08-25 |
Family
ID=16244085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18960481A Granted JPS5890168A (en) | 1981-11-26 | 1981-11-26 | Detecting device for dredged earth |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5890168A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04101464U (en) * | 1991-01-14 | 1992-09-02 | 鈴木 三郎 | Scaffolding sheet locking device for work |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0677013B2 (en) * | 1984-10-31 | 1994-09-28 | 大成建設株式会社 | Geological survey method |
-
1981
- 1981-11-26 JP JP18960481A patent/JPS5890168A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04101464U (en) * | 1991-01-14 | 1992-09-02 | 鈴木 三郎 | Scaffolding sheet locking device for work |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5890168A (en) | 1983-05-28 |
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