Study On The Whole Process Management System Of Debris-flow Disaster Prevention And Treatment Project In Hydropower Engineering

Hydropower projects are often located in a complicated geological environment due to its engineering characteristics. Many projects in western china face the threat of debris-flows. Caused by many complex natural factors and concentrated rainfall, debris-flows can threat the safety of engineering, human life and properties. Considering the great harm of debris-flow disasters, it becomes more and more important to carry out an effective research on prevention and treatment system of the debris-flow disaster.Considering its characters of uncertainty, randomness and multi-relationship, the qualitative description methods rather than quantitative analysis are always employed to evaluate the debris-flow disaster. Traditional treatment methods go against the standardization and efficiency improvement of debris-flow disasters risk management. In order to research debris-flow disaster prevention and treatment, some works are presented in this paper including the whole process management principles, management system and management contents.A set of complete risk management system including risk identification, risk assessment and risk disposal is first put forward in this paper based on classifying, induction and analysis on each stage of risk management suitable for debris-flow disaster prevention in hydropower engineering. The working contents and depth of risk management system in the demonstration prophase of hydropower engineering are summarized. A series of risk management system block diagram which is of practical and guiding significance is put forward. The risk points of debris-flow management in the implementation phase and operation maintenance phase is revealed on the basis of the feasibility condition. These points are also analyzed and explained to improve the ability of controlling risk according to the process of controlling system. In addition, the related geotechnical investigation and design code of debris-flow prevention and treatment are interpreted and comparative analyzed. The measures and suggestions of performance principle are proposed which provide ideas and basis for risk management. At last, some main principles and management measures for debris-flow disaster prevention are summarized and interpreted through the analysis of engineering examples. All these achievements are helpful to hold the main point, improve efficiency and reduce risks as far as possible in the future working of tackling the debris-flow.