A STUDY ON URBAN SLOPE HAZARDS IN GUANGZHOU

Economy of Guangzhou is developing rapidly, the contradictions among population, resource and environment are outstanding and the geological environment worsens day by day, the slope hazards frequently take place and seriously hinder the sustainable development of the city. Active faults are their structure foundation .The strong weathering surface provides them with material conditions. Rich precipitation and run-off are their power source. Torrential rain and flood are their important triggering factors. Human activity has resulted in the increased incidence and severity of slope hazards, such as collapse, landslide and debris flow. Man upsets the ecological balance and becomes important disaster causative factor. Slope ha zards in Guangzhou are more and more serious in the past ten years. There are two peak periods in 1996~1998 and 2000~2002. Regional distribution centers on the old town and basin mainly, spreading to surrounding hills.