RECENT MAJOR SHIELD-DRIVEN TUNNELS THROUGH SOFT GROUND IN JAPAN

[摘要] This is to introduce some soil-mechanical aspects of some recent major shield-driven tunnels excavated by the pneumatic method through very soft clays in Tokyo and Osaka for underground railways. The two important points discussed herein are the air pressure reqired for supporting the exposed cutting face and the settlement of the shield and the ground due to weakness of the soil supporting the shield.

[学科分类] 建筑学