研究结论:结合本线功能定位,从客流构成、不同运输方式旅行时间及时间目标值的选择角度分析,建议时间目标值应控制在5 h以内,需采用200 km /h及以上的速度方案;根据时间目标值的要求及相邻路网的速度目标值并结合沿线地形条件,从工程投资及经济效益角度分析250 km /h投资效益最优。结合我国客货共线铁路速度目标值发展趋势、不同速度目标值对线路能力、运输组织的影响分析及我国机车车辆对250 km /h速度适应性分析, 200 km /h(基础设施预留250 km /h)方案较200 km /h方案工程投资增加不多,且线路平面条件较高,所以推荐本线采用200 km /h(基础设施预留250 km /h)速度目标值方案。
Abstract：Research purposes: Through the selection of target values of time, infrastructure and train running and analyses from the view of points of technical feasibility, economical rationality and the long -term development of Chinese railway technology, the reasonable target speed value ofGuiyang -Guangzhou Railway is selected.
Research conclusions:Combined with the functional orientation of the railway line and through analyses from view of points of the passenger flow composition, the travel time ofdifferent transportmode and time targetvalue, the proposed time targetvalue of the whole line should be controlled within 5 hours, and the adopted train speed should be up to 200 km /h or above. According to the requirements of the line and the adjacent lines for the time target value and on considerations of the topographic conditions, investmentand economic benefi,t itis the best to construct this railway line with speed of250 km /h to obtain the perfect investmentbenefi.t By analyzing the speed -targetdevelopment trends of the railway line formixed passenger and freight traffic in China, the influences on the lines' capacity and transportation organization by the differentspeed targetvalues and the adaptation ofChinas' locomotives and rolling stock to the railway line with speed of250 km /h, the 200 km /h (with the infrastructure reserved 250 km /h condition) program only needs a littlemore investment than 200 km /h program to obtain better line plane conditions. Therefore, the 200 km /h (with the infrastructure reserved 250 km /h ) program is recommended to this line.
2009, Vol. 26 
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