Abstract: Bailiqing Tunnel in Qingshuihai Diversion Project in I}unming is located in the Xiaojiang fault zone，where the surrounding rock is loose and broken，the groundwater is abundant and the construction is easy to collapse. In view of the geological conditions，special support measures and landslide treatment schemes are adopted during the construction process，which is safe and quick.

Key words: qingshuihai diversion project, bailiqing tunnel, rock crushing, groundwater, landslide, support scheme