According to the analytical theory of electrostatic hidden troubles and the practical data gathered in a Railway Freight Yard for dangerous goods,the electrostatic hidden hazards in the railway freight yard for dangerous goods were directly evaluated and analyzed,and two models,namely,the Floating Human Body Model and the Human Body-Barrow Model,were put forward.

Analyzing the features and development environment of railway dangerous goods logistics,the paper studies the current situation and the existing problems of railway dangerous goods logistics and puts forward a feasible developing strategy for railway dangerous goods logistics.

Aiming at existing problems of dyke engineering,this paper presents removing danger and consolidating methods being suitable for all kinds of dyke damage prevention.

This paper analyzes the dangerous situation and the potential damage in Taipinghu Reservoir earth_dam and pertinently poses the governing measure .

But there were less dangerous situations than that in historically larger floods.

During the flood, the river situation is little changed except of the reaches without treatment and there has been relatively less dangerous situation.

The paper presents three evaluation indices in order to evaluate the regional productivity arrangement and service level of railway dangerous goods transportation,uses the fuzzy C-means algorithm in the service level clustering analysis of regional railway dangerous goods transport productivity arrangement and shows an example.