在铁路既有站场的勘测中,对于行车量大、调车作业频繁的大站站场和房屋建筑高度密集居民区的测绘,由于困难多、工作量大、安全性差,所以多年来一直是个棘手的难题。能否用其它新的方法来解决这一难题呢?近年来不少兄弟单位都在进行摸索试验,试图找到一种新的手段来代替老的一套勘测方法。三年前我们曾经在××线的接轨站上利用大比例尺 In the survey of existing railway stations, surveying and mapping of large stations and high-density residential areas with large traffic volume and frequent shunting operations have been a problem for many years because of the difficulties, heavy workload and poor safety. Thorny problem. Can we use other new methods to solve this problem? In recent years, many brothers units are conducting trial tests in an attempt to find a new means to replace the old set of survey methods. Three years ago we used the large scale on the connecting line of the ×× line