According to natural geographical condition of Tongchuan City

the mining-induced environment rock mass engineering problems under loess slope or high hilly slope in Tongchuan coalmine diggings

are analyzed. And then a classified analysis about the affect factors of landslip disaster in high hilly slope is carried out. The evolvement mechanism of landslip disaster and ground subsidence due to construction digging or mining is also analyzed. Using CEPDF to simulate a typical example

the research results provide some referential value for predicting or controlling the hilly slope disaster in Tongchuan City.