摘要
介绍了草峪岭长隧洞贯通测量洞内平面控制的两种方案 ,单导线与导线环 ,对这两种方案的测量误差进行了估算 ,并根据工程实际对他们进行了优化比选 。
The water-converance tunnel of Caoyuling in Linfen Prefecture is 19.4km long.In this paper,two breakthrough schemes of horizontal control survey within the tunnel,the single traverse method and the traverse networkmethod (Fig 3)are given,their survey errors are also estimated.Through analysis on their advantages and disadvantages,the single traverse method is selected according to the project practice.The surveyed results that the actual lateral through error was far smaller than the theoretic eestimated value of ±100mm evidently show that the method selected is reliable.However,some items to which attention should be paid when adopting the single traverse method,pointed out the writer.
出处
《山西水利科技》
2000年第1期55-57,共3页
Shanxi Hydrotechnics
关键词
长隧洞
贯通测量
单导线
导线环
误差
输水隧洞
Long Tunnel Breeakthrough Survey Single Traverse Traverse Closure Survey Error
