Abstract: Through studying characters of geotechnical engineering of red strata and engineering practices in the red stratum area of Yunnan province, the physico-mechanical characters of the red strata, the distortion-destruction process of slopes of red strata, which are the three stages—the creep, the shearing and the slide, is analyzed. It also analyzes and introduces characters of mechanism of cyclic enlarging of landslide of red strata; and discusses the main hazard of distortion destruction of slopes of red strata, which is the landslide hazard and the hazard of creep, with engineering example. The controlling countermeasures for the hazard of slopes of red strata are suggested accoding to the distortion-destruction characters of slopes, the character and safety of buildings.

Key words: red stratum, character of geotechnical engineering, distortion-destruction mechanism of slope, hazard contro1