The anti - corrosion methods of colliery steel structure;

The methods of quantum chemistry calculation generally used in the investigation on coal structure and reactivity are introduced.

Based on the research of coal structure,it is of great possibility to obtain coal based chemicals,aromatic polymer and carbon-based materials,and as a result realize.

In view of the limitation of the traditional coal chemistry and the research achievement of coal molecular structure, this paper provides the molecular coal chemistry is that we should reveal the coal structure on the molecular level by the advanced analytical methods and probe the rational use of coal based on the coal molecular structure.

The interaction between mineral matter and metaplast under different conditions was analyzed,and the influencing mechanism of mineral matter on char structure was indicated.

0m,based on geological factors of mining depth,texture of coal seam,parting number,hardness and thickness,seam roof lithology and thickness,coal and rock mass fissure development,considering gas and coal dust concentrations,optimizing three coal mining method schemes of longwall fully mechanized slicing,fully mechanize.

Based on the observabion upon the macrolithotype and texture of coal seam describtion,and record for the whole coal seam underground Dongpo Coal Mine and nearby mine(West Jinpo Coal Mine,North Anjialing Surface Coal Mine),and combined the test data of coal quality,comparative analysis between drilling data and log results of No.

Geological controls of coal body structure atNo.1 mine in Shizuishan mine area;

To ensure safe production in coal mine,the author analyzes geological factors of Pingdingshan tenth coal mine,which effect the gas source and outburst of outburst coal bed,such as geological structure,change of the coal layer's thickness,coal body structure,bury depth and so on.