The west route project of the North South Water Transfer, very unique in its scale, is located in a region with a very special topography, climate and tectonic environment.

• 南水北调西线工程的自然环境、区域地质环境和经济技术环境都具有特殊性,区内工程地质勘察特别是隧洞工程的勘察具有较大的难度。