四国の道路トンネル工事と地質

概要

論文の詳細を見る
The tunnels of 55 national hyghway are constructed or under construction by the Ministry of Construction on mountainous Shikoku district which mainly consists of Paleozoic, Mesozoic sedimentary and metamorphic rocks. The writer summerized geological conditions and construction records of these tunnels. There is distinct difference in selection of steel support type of tunnels in Paleozoic and Mesozoic rocks which will be caused by their geological conditions. It is shown that difficulties of construction, containing failures of portal, surface subsidence, caving and squeezing grouds are closely connected with geological feateres of tunnel sites in Shikoku.
一般社団法人日本応用地質学会の論文
1970-06-01