Researchers from Institute of Mountain Hazards and Environment (IMHE), CAS invented two debris flow early warning methods, which patents have been issued by Chinese authority.

For the situation of less rainfall data in mountainous areas, especially for a short duration rainfall data gaps, and almost no data in debris flow formation zones, Prof. OU Guoqiang from IMHE and his team put forward a rainfall threshold calculation method based on hydraulic debris flow initiation mechanism and rainfall threshold calculation method through analogy analysis of similar regions with abundant rainfall data.

The two inventions solved the key problem of the shortage of rainfall data in storm debris flow early warning research, which have much broader applicability and greater maneuverability. Based on the two methods, the team established two key monitoring and early warning demonstration sites of landslides and debris flows in the key soil and water conservation regions of the upper Yangtze River - Debris Flow Monitoring and Early Warning Stations respectively in  Ningnan county, Sichuan province and Qiaojia, Yunnan province. The two demonstration sites are running well since 2010.

Title: One kind of debris flow early warning method

Patent Number：ZL201110046589.5

Applicant：Institute of Mountain Hazards and Environment (IMHE), CAS

Inventors：PAN Huali, OU Guoqiang, HUANG Jiangcheng, LIU Jinfeng, LYU Juan, YANG Shun, JI Xianjun, WANG Jun

Title: One kind of shortage of rainfall data region’s debris flow early warning method

Patent Number：ZL201110095301.3

Applicant：Institute of Mountain Hazards and Environment (IMHE), CAS

Inventors：OU Guoqiang, PAN Huali, HUANG Jiangcheng, LIU Jinfeng, YANG Shun, JI Xianjun