Formation,characteristics and trend of the group debris flows occurred on August 13 in Qingping,Mianzhu County

Serious debris flows occurred at 1 o’clock on August 13,2010 in Qingping Country in Mianzhu,Sichuan,which is one of the most serious disaster areas after the 2008-5-12 earthquake.About 27 debris flows broke out almost at the same time and debris flow from Wenjiagou was the most serious one with adeposition volume of 310×104 m3.As many as 9 residents lost their lives unfortunately,about 379 houses were destroyed.As the formation is concerned,this disaster was caused by both the 2008-5-12 earthqua...