The research shows that the cross passage can sharply decrease the peak of the high-speed railway tunnel exit micro-pressure wave,and the site or of the cross passage or the size of the cross passage sectional area.

Risk analysis of building connection tunnel in Wuhan Yangtze River Tunnel;

Due to adit construction,the research demonstrates the disadvantageous distribution of deformation and internal forces in intersection of adit and main tunnel,particularly in its side-wall connected to the adit.

A calculate method of cross passage interval in detail using Xuefengshan Tunnel as an object example is described,and the application of the calculate method is also given out briefly.