Research On The Technique For Pre-estimating Geological Hazard Of Landslide

With the several decade years' development, engineering geology has produced plentiful and substantial fruits. The geologic structure cybernetics, which is put forward by Sun Guang-zhong, supplies reliable theoretical basis for the geological pre-estimating technique of geological disasters including the landslide, and some research productions have supplied many practicable basis for the geological pre-estimating technique. The author in this paper, after participating several projects such as the preliminary reconnaissance of Jinji highway, the research of loess hidden caves, and the research of forecasting and pre-warning system for the geological disasters along highways in Southern Shannxi, and according to the system analysis of stratum, structure and landform, through studying the formation, the development and the characteristics of landslide, firstly puts forward the conception of pre-estimating landslide based on the geologic structure cybernetics. The pre-estimating system for landslide is a technical method, which can determine the space position and the type of landslide, and can pre-estimating its developmental condition in the future without any exploration means, but according to all kinds of geological pre-estimating methods and topographical features of landslide. In this paper, the author builds the basic system, the discriminating method and the working procedure of this technical method, and has applied this method for investigating the geological disasters along highways in Southern Shaanxi. This not only has important theoretical meaning, but also important practical meaning.Based on analyzing the previous classification of landslide and according to the purpose of geological pre-estimating, the author puts forward the classifications of landslide composed by basic classification and subsidiary classification, and summarizes the main markings for pre-estimating landslide, including the 11 landform markings and the 10 geological constructional markings, and illustrates 7 new landslides, 9 old landslides, 8 ancient landslides, 4 traction landslides and 4 removing landslides.The author in this paper detailed discusses the eely geological landform...