The article introduces mainly the general contruction technology and the integrating strengthen measure of crossing block stone\'s for the station large span structure of Dachang 2# tunnel entrance in alteration work of the Guizhou-Guangxi Railway with anti-slide pile,steel flower pile surface grouting,surface anchor spewing and leading large pipe.

This paper mainly introduces the accessing method and two driving methods for large-span railway station tunnel on buried weak surrounding rock.

In this paper,the mathematical model of the skip-stop strategy for urban rail transit trains is introduced,factors correlated with the passenger travel time are analyzed.