乌江渡发电厂扩建工程地下洞室群的施工测量控制

Construction Survey Control of Underground Tunnel-room Group of Wujiangdu Power Plant's Extension Project

重点介绍了在乌江渡发电厂扩建工程洞室密集的情况下,如何建立加密控制网及采用局部测量控制以提高精度的方式。施工实践表明各洞室贯通情况良好,均达到了设计和规范要求,也满足了机电和金属结构安装的需要。此外,也介绍了为提高放样效率及放样精度所采用的一些辅助方法。

The tunnel-rooms of Wujiangdu power plant's extension project are intensive,this text specially introduces the method that how to set up finer control network and adopt measurement control in some areas in order to improve measure precision.Construction practice indicate every tunnel-room well passed through in sound conditions,reaching the requirements of design and standards,also having met the needs of electro-mechanics and metal structure installation.In addition the paper introduces some adopted auxiliary methods in order to improve efficiency and precision of laying-out too.