Research on structural adjustment of crop production for theLuanxia irrigated area where in the east of Hebei;

By data analysis of the lower Luanhe River, the paper discussed the tendency of river channel changes and evaluated the prevention effect of the existent control works on the lower Luanhe River.

Present status and development tendency of mining and excavation mechanization technology in Kailuan Mining Area;

Theory and practice of comprehensive mine water prevention and control technology for mines in Kailuan Mining Area;

Technical study of Geologic Safety Guarantee System for Kailuan mining area;

Distribution of trace elements in the Kailuan coalfield;

Migration and distribution of fifteen toxic trace elements during the coal washing of the Kailuan Coalfield, Hebei Province;

Isothermal adsorption of CH_4/CO_2 mixed gas for the late Paleozoic coals from the Kailuan coalfield of Hebei Province

On The basis of analysis and investigation on present environment conditions in Shuangluan district of uan River,and according to the foundation of the banks of river and requistion of landscape,the district could be 5 areas,which qre the natural ecology area,damp protection area,plays and relaxation area,culture landscape area and water entertainment area.

Application of ~(137)Cs tracer technique to estimate the wind erosion rate of Castanozem in Luanhe River Source Area;