Abstract: Bedding landslide is a type of landslides, it has higher frequency casualty of many provinces in China; it makes a lot of damage of economy and bad influence of society. In order to research regularity of bedding landslide, according to 81 bedding landslides in China to build data base that the authors engage in and successful control them, by using the contribution rate method to quantitatively analyze various interdependence about varied dip angle space of bedding landslide, the various correlations about varied dip angle space of bedding landslide are studied. It is found that the dip angles of bedding surface of 10°-25° have maximum contribution rate; the dip angles of bedding surface of 25°-35° have middling contribution rate; the dip angles of bedding surface greater than 35° or less than 10° that have minimal contribution rate. The research conclusions are consistent preferably with the fact, so as to provide potential gist to research and control bedding landslide in China in future.

Key words: bedding landslide, dip angle, contribution rate