Discussion on the operation condition of low temperature and high water level of Dongfeng dam;

Rehabilitation for Shuidong dam;

By pressure and slurry density control in grouting project of Shuidong dam,the goals of dam reinforcement and no lifting damage of upstream anti-seepage facing slab were achieved which were the key points of the whole project.

Based on fault tree and vague set theory, an model of evaluating criteria of dam risk, in order to improve deficiency of traditional assessment method, such as lack of fuzziness and flexibility, and to be used for making safety and reliability evaluation for complex systems, is put forward.

The dam risk management decision support system under disaster load is a complex,large-scale system and it requires a lot of professional with various backgrounds to participate in.

Based on the typical southeast gale weather process in Urumqi international airport in Nov.

The weather process of a southeast gale from17 to 18 April in 1998 in Urumqi is analyzed by means of synoptic method.

Special terrain and different atmospher general circualtion system,brought up the gale of Laofengkou Area,especially eastern gale.