The safety-monitoring index of seepage was determined by use of the typical low probability method,and the impermeability of the dam body and its foundation was analyzed through comparison of measured data with the index value.

Based on analysis of Gutian River First Stage Dam s prototype observed displacement data,this paper applied typical low probability method and confidence interval method to study the safty-monitoring index of crest horizontal displacement of No.

,it is proposed that the maximum takes monitoring indices of the structural analysis method and the minimum takes the result obtained by the typical low probability method.

This paper presents a new noise-resistant fuzzy clustering approach based on probabilistic typicalities and cluster repulsion, denoted as RTCM, proposes a new iteration algorithm,furthermore, validates its converge.

In light of the specific circumstances and the analysis of observational data of Mianhuatan dam,the safety monitoring index of horizontal displacement at the top of 2#,4#,5# typical dam section is determined by means of confidence interval estimation method,typical small-probability method and structural analysis.

On the basis of the mothed of log equivalent volume model and the laboratory analysis information of coal samples, the authors develop the log interpretation model of determining coalbed coal quality parameters by the probable model method(multi variate liner regression method).

This paper introduces the problems of some identical equation solved by the numerical characters of the classic probability and stochastic variable.

Abstract: Two methods of solving a classic probability problem were given.