Hoek-Brown强度准则参数的改进算法

The Improvement Algorithm of the Hock-Brown Strength Criterion Parameters for Rockbody

基于溪落渡及二滩水电站的大量测试数据 ,提出了岩体Hoek Brown经验强度准则参数m、s的改进算法并对随机特征进行了分析。研究发现m、s是一对具有较大变异性的相关变量 ,且s的变异性比m的变异性大 ;当岩体强度一定时 ,m、s为一对负相关的变量 ,且这种变异性和岩体性质、岩体地点都有关系。同时指出m、s参数的相关性是一个不可忽视的重要因素 。

Based on a lot of testing data from Xiluodu Hydropower power station and ertan hydropower staton,the parameters such as m and s of the Hoek Brown strength criterion are analyzed in this paper.It is found that m and s are a couple of variables with great corelativity.While the strength of rockbody is a constant,there is negative correlativity between m and s determined by the property and location of rockbody,it is suggested in the paper that the corelativity between m and s is very important parameter which can not be neglected.