高速铁路是指列车运行速度200 km /h 以上的铁路,我国对既有铁路进行提速改造的同时,拟修建京沪高速铁路,全长1 307 km,时速250 km。高速铁路技术要求比普通铁路显著提高,在高速铁路勘测工作中,平面和高程控制是高速铁路建设成功的首要条件。本文对高速铁路的平面和高程控制精度进行了论证和推导,以期为我国高速铁路勘测、设计、施工、维修提供理论上的依据。

The t rain o perating speed in high-speed rai lway is usually ov er 200 km /h. Whi le raising speed o n ex isting rai lway s in China , the Jing-Hu High-Speed Railw ay wi ll be const ructed wi th running speed o f 250km /h and having a total leng th of 1307m. The technica l requirements for high-speed railway s a re much higher tha n that fo r o rdina ry rai lw ays. In the surv eying w o rks for the high-speed railw ays, the plane survey and the v ertical cont rol are of the fi rst impo rta nce for successful co nstructio n of a high-speed rai lwa y. The paper infers and demonst rates an accuracy issue for plane surv ey and v ertical co nt rol o f hig h-speed railw ay , fo r the purpo se of o ffering a theoretical basis for surv ey, desig n, const ruction and maintenance of o ur na tional high-speed railw ay.