To provide a dry pit for shell water bottom connection, capable of forming a dry work space at a water bottom without the need of a large-sized heavy machine, a work ship or many materials, even for a pipe line of a relatively large pipe diameter.
To an upper end of a dry pit bottom part cylindrical body 1 installed on a water bottom surface, a dry pit upper cylindrical body 2 of such a length that an upper end reaches above a water surface is separably connected, and on mutually symmetrical positions of an outer peripheral surface of a junction of both cylindrical bodies 1 and 2, a window 5 for shell end insertion formed by joining both cylindrical bodies is provided. In the state of installing the dry pit bottom part cylindrical body 1 at the water bottom and inserting ends of shells A1 and A2 to be connected to each other to the respective windows 5 for the shell end insertion, the dry pit upper cylindrical body 2 is joined and connected onto the dry pit bottom part cylindrical body 1, water is drained from the inside of the cylindrical body, and thus the dry work space is formed.
TAGUCHI HARUHIRO
SUGAWARA RYOJI
| JPS51155555U | 1976-12-11 | |||
| JP2005282100A | 2005-10-13 | |||
| JPS5126717A | 1976-03-05 | |||
| JPS5641931A | 1981-04-18 | |||
| JP2008208680A | 2008-09-11 |
Next Patent: SCREEN UNIT