Study on pressure wave in high-speed underground railway tunnels

Establishes a numerical model of pressure wave in underground railway tunnel with shafts based on one-dimensional characteristic line theory according to the structure of underground railway tunnel. By means of numerical calculation, analyses the influence on pressure change inside the underground railway by train speed, cross section area of tunnel, cross section area of shaft and air-tightness index. Based on the comfort level of the pressure change, gives the recommendations of high-speed underground railway tunnel design parameters under various train speed.