Taking Chengdu-Suining single line, the semi auto-block sectionof Da-Cheng line as example, with the aid of simulated analysis by computertrain-graph generation software, the paper studies the influences of continu-ally dispatching high-rank passenger trains during busy hours to the throughcapacity of whole section and to the travel speed.

Application of object-oriented method in compiling single-track train diagram;

The unreasonable aspects of the distribution principle of the stations in single-track railway line are pointed out and analyzed,and the specific revising methods are proposed.