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王玉泽说,从“四纵四横”到“八纵八横”,我国的高铁设计理念有很多变化。首先是人们的需求变化了,随着生活水平的提高,百姓出行要求更便捷、更舒适,高铁要实现公交化运行。
其次,“八纵八横”的覆盖范围更广,要实现基本覆盖到20万人口以上的城市,东部要加密,西部要扩张,欠发达地区建设的需求更大。同时,速度需更加灵活,可根据各地实际情况调节速度,城市圈的距离也将缩小到半个小时。此外,“四纵四横”铁路网相对独立,“八纵八横”建成后,通道多了,铁路网将更加灵活,开行方案实现多样化运行。
“这张铁路网将统筹高速与普速,新建与既有,枢纽与通道的协调,强化主通道,疏通微循环,与公路、民航、水运、城市轨道交通进行有效衔接,构建一个现代综合立体交通体系。”王玉泽表示。
更重要的是,“八纵八横”铁路网将改变我国城市力量格局。按照规划,到2030年,全国铁路网运营里程将达到20万公里左右,其中高速铁路4.5万公里左右,全国铁路网将连接起20万人口以上的城市,高速铁路网基本连接起省会城市和其他50万人口以上大中城市,实现相邻大中城市之间1至4小时交通圈。
“从‘八纵八横’铁路网规划看,北上广在高铁网中的地位不可撼动。同时,一些新城也在迎头赶上,大城市中,重庆、合肥、郑州、西安、深圳都基本形成了米字形放射状的高铁枢纽;地级城市中湖南常德、湖北襄阳和宜昌、重庆万州、江西赣州和九江、四川宜宾则借助‘八纵八横’高铁网成为高铁新秀。”中铁第四勘察设计院集团有限公司副总工程师郭志勇说。经济日报·中国经济网记者 齐 慧
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