Based on investigation and analysis on case histories of tunnel deformation along main railways in mountainous area of China since 1980,the tunnel deformation types,geological structure model and interaction mechanism in slope disaster section are systematically presented.

The paper,based on investigation and analysis of many tunnel deformation examples along China mountainous main railway lines since 1980,systematically presents tunnel deformation types,geological structure model and interaction mechanism in the slope disaster section so that it can provide reference for similar disaster control in the future.

The paper presents some relative techniques about anchor wire drilling hole of control test engineering of slope disaster in Area on north slope of Lishan.

Based on the research qualitative prediction methods for the slope disease are discussed.

Based on a large number of the investigated data, the slope diseases are analyzed, and all slope diseases are generalized as five types: sliding, fall, rock flaking, mud and stone flow, water scouring, and dis.

Reasons analysis and protecting measures of disease slope;

Taking the defect of landslide at the exit part of Bailu Mountain Tunnel for example,the causes of landslide are expounded,and the nature of landslide is also analyzed.

Relationship between tunnel deformation with slope disasters and its prediction model;