The purpose of this paper is to bring forward the concept of land conflicts in China,sum up their characters and analyze their trigger factors.

Analysis on induced factors of pressure bump occurred in deep mine roadway of Zhaogezhuang Mine;

Based on the discussing of the geological condition of natural environment in Henan Provinvce,the authors have systematically expounded the developmental types,distributing features,induced factors and harmful degrees of main geologic disaster,predicted development trend of geologic disaster,and put forward the corresponding measures of the prevention and control in this paper.