水工隧洞施工中的测量控制

On Construction Survey Control of Hydraulic Tunnel

水工隧洞施工测量的任务主要是把在设计图纸、文件上的建筑物的位置、大小、形状、高程以足够的精度在实地上标定出来,其目的是促进建筑物施工进度和检测其施工质量。文中通过对南支与岔口连通的土质隧洞工程施工测量方法和步骤进行探讨,提高了测量精度,为隧洞开挖和贯通提供技术支撑,也为从事类似测量放样工作的施工单位提供借鉴。

The task of construction survey for hydraulic tunnel is to demarcate and elevation on the actual construction site according to the engineering design the buildings＂ position, size, shape drawings and documents and with sufficient survey accuracy. The survey aim is to promote the construction process of tunnel and to inspect its con-struction quality. In the paper, through probing the construction survey method and procedure of a soil tunnel which is constructed to connect south lateral canal and the Chakou Water Diversion Project, the project＇s survey accuracy is raised. This survey method provides technical support for tunnel-excavating and linking up, and also provides refer-ence for another construction units which will go in for similar survey stakinz-out work.