论文部分内容阅读
引言万里长江、横互着长江流域,我们的精密水准环线,被长江劈为南北两半,迄目前为止,横跨长江的直接水准测量,通过长江大桥是唯一的,也是空前的。在此以前,我们连系长江两岸的过江水准,是按照原水利部精密水准测量细则中的倾斜螺旋法进行的。在长江干流上,由海口至宜宾,我们应用倾斜螺旋法,做了16处过江水准测量,结果令人满意———
INTRODUCTION The Yangtze River runs across the Yangtze River and across the Yangtze River. Our precision leveling loop is split into two parts by the Yangtze River. So far, the direct leveling measurement across the Yangtze River is the only and unprecedented through the Yangtze River Bridge. Prior to this, we linked the river level across the Yangtze River according to the original Ministry of Water Resources precision leveling rules in the inclined spiral method. On the main stream of the Yangtze River, from Haikou to Yibin, we applied the inclined spiral method and made 16 cross-river leveling measurements with satisfactory results.