论文部分内容阅读
内昆铁路黄土坡三号隧道日前顺利贯通。据悉 ,该隧道是迄今为止中国最长的“灯泡型”隧道。黄土坡三号隧道地处云南省昭通市 ,全长 30 0 5 m,隧道呈圆弧型 ,线路走向宛如一个“灯泡”形状 ,顺山体旋转 2 70度 ,进、出口平行距离 6 6 0 m,高差 6 0 m,曲线半径 2 70度 ,坡高为 19
Nei Kun Railway Loess slope on the 3rd tunnel smoothly through. It is reported that the tunnel is by far the longest in China, “Bulb-type” tunnel. The No. 3 tunnel of Huangtupo is located in Zhaotong City, Yunnan Province. It has a total length of 305 m. The tunnel is arc-shaped. The line runs like a “light bulb”. The mountain body rotates about 270 degrees. The parallel distance between the entrance and exit is 6 6 0 m , Height difference 6 0 m, curve radius 2 70 degrees, slope height of 19