奥地利为研制一种精度准确到±10毫米的隧道净空测量方法,进行了大量的试验。此种技术是利用激光脉冲的发射与反射之间的时间间隔来进行量测的。以前,曾用过一台这种样机测量阿尔伯格线的纵断面和横断面,将来的发展目标是建立计算机程序,以自动检测超限货物路线的情况。 A large number of tests have been carried out in Austria for the development of a tunnel clearance measurement method with an accuracy of ± 10 mm. This technique utilizes the time interval between the emission and reflection of a laser pulse. In the past, a prototype of this type was used to measure the profile and cross-section of the Alborg line. The future development goal was to establish a computer program to automatically detect overrun cargo routes.