中文摘要：

为分析混合岩与绿泥石英片岩强度的空间变异性以及对边坡可靠性分析计算的影响,在矿山采场进行了按测线等间距取样的点荷载测试。应用地质统计学原理计算了实验变差函数,引入理论变差函数的球状模型、高斯模型、指数模型来刻画岩体强度的空间变异性,利用Visual Basic编写了拟合分析程序,得到了相关的模型参数,并进行了岩体强度的局部分析,获得了混合岩与绿泥石英片岩强度的方差衰减函数。应用Monte Calo和Bishop法对建立的混合岩与绿泥石英片岩简单边坡模型进行了岩体强度空间变异性影响的对比分析,受块金常数C0的影响,不考虑岩体强度空间变异性（T=0）与分条宽度T取较小值（T→0）时有一个落差,考虑岩体空间变异性后边坡可靠指标的计算值增加,这是符合客观实际的,否则应为保守分析,但边坡可靠指标的计算值随着分条宽度T的增加而呈现单调增长的规律,分条宽度取值过大的计算分析是偏于危险的,考虑岩体空间变异性的条分法计算,其条块划分以多条小宽度为好。

英文摘要：

In order to analysis spatial variability of migmatite and Chlorite quartz schist＇s strength,and the reliability of slope after considering spatial variability.We carried out the point load test according to line spacing sampling in the mine stope.The experimental variation function is calculating with geostatistics theory.Spherical Model,Gaussian Model and Index Model are introduced to character spatial variation of rock mass strength.The fitting analysis program is written by Using Visual Basic,relevant model parameters are obtained and the local rock mass strength analysis is performed,finally attenuation function of the variance of migmatite and chlorite quartz schist is obtained.In the end,Monte Calo and BISHOP methods are used to compare the effect of spatial variability of rock mass strength in simple model of migmatite and Chlorite quartz schist.The results indicate that regardless of the rock mass strength spatial variability（T=0）and slitting width T take smaller values（T0）there is a gap which influenced by nugget constant C0.The slope reliability index calculation value increases after considering the spatial variability of rock mass that is in conformity with the objective reality,otherwise should be conservative analysis.But the calculated value of the slope reliability index increased with the increase of slitting width T presents the monotonous growth rule,slitting width high value calculation is more dangerous.Small width is better toslices method after considering the spatial variability of rock mass.