JPS56119011A - Technique for tampering/levelling off water bottom riprap layer - Google Patents
Technique for tampering/levelling off water bottom riprap layerInfo
- Publication number
- JPS56119011A JPS56119011A JP2064180A JP2064180A JPS56119011A JP S56119011 A JPS56119011 A JP S56119011A JP 2064180 A JP2064180 A JP 2064180A JP 2064180 A JP2064180 A JP 2064180A JP S56119011 A JPS56119011 A JP S56119011A
- Authority
- JP
- Japan
- Prior art keywords
- riprap layer
- depth
- level
- levelling
- tampering
- 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
Abstract
PURPOSE: To arrange so that even at a great water depth, submerged construction work may be performed easily by monitoring a depth and a level and performing the tampering/levelling off of a riprap layer with the assistance of a device suspended from an operating ship with regard to the captioned construction work involving the erection of a breakwater.
CONSTITUTION: A riprap layer 5 is tampered and an elevation is crushed/levelled off by repeating the alternating operation of winding up a device 2 suspended from an operating ship and letting it drop freely by its own weight at a location with any appropriate head near the surface of a riprap layer at the water bottom 4. During this operation, the posture of the said device is monitored by means of a level detector and the work continues until the water depth from the surface of a riprap layer 5 that is indicated through conversion by means of a depth meter 14 almost reached the value equivalent to the neighborhood of a target finished base face 22. When an inclination is confirmed, a group of oscillation elements 12 belonging to the sharper side of an indication are selected and are selectively operated and are continued until the level detector 13 indicated a level and a target finished base face 22 monitored by the depth meter 14 was correctly reached.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2064180A JPS56119011A (en) | 1980-02-22 | 1980-02-22 | Technique for tampering/levelling off water bottom riprap layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2064180A JPS56119011A (en) | 1980-02-22 | 1980-02-22 | Technique for tampering/levelling off water bottom riprap layer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS56119011A true JPS56119011A (en) | 1981-09-18 |
Family
ID=12032846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2064180A Pending JPS56119011A (en) | 1980-02-22 | 1980-02-22 | Technique for tampering/levelling off water bottom riprap layer |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56119011A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5850225A (en) * | 1981-09-21 | 1983-03-24 | Toyo Kensetsu Kk | Vibrating and leveling work for rubble mound under water |
| JPS5858328A (en) * | 1981-09-30 | 1983-04-06 | Toyo Kensetsu Kk | Apparatus and method for weight dropping type underwater rubble leveling work |
-
1980
- 1980-02-22 JP JP2064180A patent/JPS56119011A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5850225A (en) * | 1981-09-21 | 1983-03-24 | Toyo Kensetsu Kk | Vibrating and leveling work for rubble mound under water |
| JPS6334924B2 (en) * | 1981-09-21 | 1988-07-13 | Toyo Kensetsu Kk | |
| JPS5858328A (en) * | 1981-09-30 | 1983-04-06 | Toyo Kensetsu Kk | Apparatus and method for weight dropping type underwater rubble leveling work |
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