• 検索結果がありません。

鋼管の新しい水中切断法について

N/A
N/A
Info
ダウンロード
Protected

Academic year: 2021

シェア "鋼管の新しい水中切断法について"

Copied!
11
0
0

読み込み中.... (全文を見る)

今ダウンロードする ( 11 ページ )

全文

(1)

川崎製鉄技報 KAWASAKI STEEL GIHO

Vol.8 (1976) No.2

鋼管の新しい水中切断法について

New Methods for Underwater Cutting of Steel Pipe Structure

斉藤 恂(Makoto Saito) 白石 環(Tamaki Shiraishi) 野中 節男(Setsuo Nonaka) 要旨 : 従来鋼管の水中切断は，機材を水中に持ち込んで潜水夫の勘と経験に頼って行われていた が，深い場所での水中作業は危険を伴うばかりでなく，潜水時間の制約による切断精度不 良などの不都合を生ずる場合が多かった。そこで，当社で安全かつ合理的な鋼管の水中切 断技術の開発に努めた結果，潜水夫に頼ることなく，水上から鋼管の管内に切断器材を吊 り下げ，任意の切断位置で切断可能な２種類の新しい水中切断法の実用化に成功した。そ れは，爆薬のエネルギーを効果的に利用した発破切断法と，回転カッターによる機械式切 断法である。これらについて，原理，装置，施工法，施工例などを紹介した。 Synopsis :

According to the conventional cutting methods of an underwater pipe, a diver operated his tool by his empirical intuition. His work in deep water tended to be risky and inaccurate owing to his limited time in water. At Kawasaki Steel Corp., our efforts to get a better cutting technique have resulted in the development and utilization of the following new methods to cut a steel pipe from within by a suspended device which replace the aid of divers. They are the blast cutting with explosive and the mechanical cutting with rotary cutters. The principle, apparatus, operation and utilization of each method are explained briefly.

(c)JFE Steel Corporation, 2003

本文は次のページから閲覧できます。

要約版

(2)
(3)
(4)
(5)
(6)
(7)
(8)
(9)
(10)
(11)

参照

今ダウンロードする ( PDF - 11 ページ - 465.62 KB )

関連したドキュメント

To From

Those of us in the social sciences in general, and the human spatial sciences in specific, who choose to use nonlinear dynamics in modeling and interpreting socio-spatial events in

its and the of a

Standard domino tableaux have already been considered by many authors [33], [6], [34], [8], [1], but, to the best of our knowledge, the expression of the

Moreover, the organization of the subject follows a simple and direct approach which quickly leads both to the main results of the theory and to some new ones

A knowledge of the basic definitions and results concerning locally compact Hausdorff spaces and continuous function spaces on them is required as well as some basic properties

A typical behavior of the solution to (1.1) with respect to the Reynolds numberReis the following, see for instance [10], [13]

and Stoufflet B., Convergence Acceleration of Finite Element Methods for the Solution of the Euler and Navier Stokes Equations of Compressible Flow, Proceedings of the

2 A new look at the exponential

The idea is that this series can now be used to define the exponential of large classes of mathematical objects: complex numbers, matrices, power series, operators?. For the

1 – Introduction In the last two decades variational methods have proved to be fruitful and flexible in attacking nonlinear problems

We believe it will prove to be useful both for the user of critical point theorems and for further development of the theory, namely for quick proofs (and in some cases improvement)

This technique allows us to obtain the space regularity of the unique strict solution for our problem

This technique allows us to obtain the space regularity of the unique strict solution for our problem.. Little H¨ older space; sum of linear operators;

The exact asymptotic of the time to collision

Keywords: continuous time random walk, Brownian motion, collision time, skew Young tableaux, tandem queue.. AMS 2000 Subject Classification: Primary: