浅析影响铟瓦基线尺长度变化的因素

A Brief Analysis of Factors Affecting the Change of Invar Base Scale Length

基线测量是精确测定长度基线的长度或水平控制网中的起始边长的测量技术和方法,目前采用24 m铟瓦基线尺进行长度丈量工作。由于基线丈量作业人员多、器具多和环境不同等因素,所以对铟瓦基线尺长度变化有多种影响。本文从铟瓦基线尺的外力作用和铟瓦基线尺的自身变化2个方面浅析对铟瓦基线尺长度变化的影响。

Baseline measurement is a measurement technology and method for accurately measuring the length of the length baseline or the starting side length in the horizontal control network.Currently,the 24m Invar baseline ruler is used for length measurement.Due to factors such as many baseline measurement operators,many instruments and different environments,there are various impacts on the change of the length of the Invar baseline ruler.This paper analyzes the influence on the change of the length of the Invar baseline ruler from the two aspects of the external force of the Invar baseline ruler and the self change of the Invar baseline ruler.