The engineering characteristics and appraisement of loess in Luan mining area;

Based on the 314 zone of blow filled soft clay engineering in Nanyou of Shenzhen,the paper studies the substance composition, microstructure and engineering characteristics of the blow filled soft clay.

By analyzing the logic structure and various features of drawing information related to budgeting, the concept of engineering feature class is put forward.

Moreover, to cope with the dynamic managing of the price of labour,material, machinery and engineering budgetary estimate on the basis of Engineering features, it uses Computer to handle, so a new approach is developed.

Applying the MATLAB software,this paper designs the program based on NN techniques,so to achieve the nonlinear imitation between engineering features and cost indexes.

The paper outlined minefield basic geological characters;analyzed the area's engineering geological characters through the information from geological reports and divided coal measures in the area into 8 engineering geological groups.

For engineering seismic resistance , the muddy soil is divided into two types with outstanding characteristics and convenient for use according to comprehensive analyses of the generating environment and physical mechanic property of the muddy soil,as well as the regional variation of seismic engineering geological character.

The paper outlined minefield basic geological characters;analyzed the area s engineering geological charactersthrough the information from geological reports and divided coal measures in the area into 8 engineering geological groups.

Based on the chemical composition and microstructures of soft soils,it is considered that the basic features of soft soils have a great effect on the characteristics of soft soil engineering geology.