水中削孔用サーモドリルの開発設計に関する研究

抄録

Today many projects of ocean development are examined and now in Seto Inland Sea the removal of many submerged projecting rocks, which block the passage of ships, is planning.
However, today we do not have an effective boring machine for under sea boring. The author built a special thermodrill or jet piercing machine which operate under water.
Several thermodrills are already used in quarries in U. S.A. and U.S.S.R. etc., but they are not efficient for under water operation.
In this paper the author described the principles of design of the thermodrill, and showed the basic calculation method for design of the burner. We can design a desirable thermodrill in accordance with the same principle shown in this paper.