RESEARCH ON THE CAUSES AND EROSION-DEPOSIT PROPERTIES OF 824 DEBRIS FLOW IN ZHONGGANG GULLY, BAOXING COUNTY

On August 24th, 2013, a massive debris flow occurred at about 10:30 pm in Zhonggang gully, Baoxing County, Ya'an City, lasting around 1.5 hours as a heavy rainfall hit the Yongfu town, Baoxing County, Ya'an City around 6 pm and lasted 6 hours. In this paper, the basic characteristics, cause of formation, erosion-deposit properties and damage mode of the debris flow were interpreted in detail in view of the field investigation in Zhonggang gully.