Key issues of emergency measures and comprehensive remediation projects to control the Danba landslide,Sichuan province,China

摘要

The Danba landslide is located behind Danba County in Sichuan Province,China. The totalvolume is about 2.2×106 m3. It was triggered by the excavation of the foot of the landslide. The deformationbecome obvious in October 2004,and accelerated in February 2005,with the maximum value to reach 5 cm perday. A large arc main scarp appeared in the crown,which connects cracks on the flanks. If the landslide occurredas a whole,the entire Danba County and its 4600 people would be in extreme danger. The related agencies havetaken emergency aid measures to reduce the deformation of the landslide as soon as possible. The paper studiedand discussed some key problems of the technical measures such as monitoring,early warning,prediction,andemergency decision making.