The Research Of Cinder Dam Stability Analysis Methods Based On Reliability

For the advantages of convenient to get material,simple structure,ease of maintenance and extension,low requiring to the geological conditions,ability to meet the foundation deformation,and simple construction techniques, earth-rock dam has a very wide range of applications in water conservation, city construction, factory cinder, tailing heaping, but the structure of earth-rock dam has low strength, poor stability, and earth-rock dam is easily influenced by environment. Dam accidents happen time and time, so the evaluation of the stability of the dams has very important practical significance.Now, the fix-value method is the main method , which does not considering uncertainty factors. In fact, the factors affecting the stability of the dam is uncertainty, so these uncertainties should be taken into account in the stability analysis of the dam .These uncertainty factors are seen as random variables, using methods based on reliability theory in dam's stability analysis to conduct in a more effective evaluation of the stability of the dam.As an important part, this paper analyses the possibilities of earth -rock dam's damage, and then expounds some principles of damage and methods of analysis. Focusing on the various possibilities of the dam's dmage, establishing reliability evaluation model. For the calculation of reliability evaluation model, the difficulty is how to get the true data of the dam's damage and how to know the distributing of random variables. when it is hard to get the true data, this paper get the data of reliability analysis by changing the parameter values,then using the method of focal point to establish the mathematics model of safe evaluation of earth-rock dam.At last, catching stability evaluation to a cinder dam,which indicates the model and method on the basis of reliability are feasible, but there are more deeper problems to more deeper study.