Research into Domestic Underwater Tunnels Meeting the National Defense Requirements

This paper introduces important underground tunnels at home either built,being built or to be built,which may be used for military transportation,with stress placed on the defects of the underwater tunnels:they may be attacked with advanced weapons and by terrorists,in which case our country may suffer heavy losses and it will be difficult to repair them.It also summarizes the influences of underwater tunnels on military transportation,and discusses the question of how the underwater tunnels meet the national defense requirements at the stage of construction,with the daily management and the emergency disposal of them emphasized.It also puts forward the tube-lowering method and the suspending method for rush repair.Finally,it also points out some of the difficulties in enabling underwater tunnels to meet the national defense requirements.