摘要
我国规划了多项引水工程,超长隧洞(10~50 km)的贯通误差控制是急需解决的难题。通过多菱形单元的狭长形洞内控制网、适当加测高精度陀螺方位角的方法来满足贯通误差限差的要求,并利用基于统计试验法的控制网精度分析验证了洞内控制测量影响值。
Many diversion projects are planned in China,so the transfixion error control for super long tunnel(10~50 km)is an imperative problem to be solved.In this paper,we used a method that using narrow and long tunnel control network of multi-rhombic unit and suitable additional gyro azimuths to meet the limited error requirement of transfixion error.And then,we used the control network accuracy analysis based on statistical testing method to verify the influence value of control measurement in tunnel.
出处
《地理空间信息》
2021年第5期96-98,I0011,共4页
Geospatial Information
基金
2018年湖北省水利水电规划勘测设计院研究开发资助项目(鄂水勘院研201803)。
关键词
多菱形单元
狭长形洞内控制网
陀螺方位角
统计试验法
multi-rhombic unit
narrow and long tunnel control network
gyro azimuth
statistical testing method
