岩体裂隙化程度与岩体变形参数的关系研究

RELATION BETWEEN DEVELOPMENT DEGREE OF JOINTS AND DEFORMATION PARAMETERS OF ROCKMASS

岩体的裂隙化程度是影响岩体结构类型、岩体质量优劣以及工程岩体综合评价利用的重要因素,因此岩体裂隙化程度的定量评价具有重要的工程意义。在介绍岩体结构面分类情况的基础上,选用单位面积节理数即平硐内硐壁每5 m硐段的裂隙总条数作为岩体裂隙化程度的量化指标。然后,结合黄河上游某水电站的工程实例,运用单位面积节理数指标,通过数理统计方法统计分析岩体中的裂隙条数,探讨了该指标与岩体变形参数的关系,为可利用岩体的评价提供了较好的理论基础。

The development degree of joints in rockmass is a significant factor affecting rockmass structure types,rockmass quality and comprehensive utilization of engineering rockmass,and it is important to estimate quantitatively the development degree of joints in rockmass. After introducing the classification of rockmass joints,the joint number per unit area which is equivalent to the joint number on the cave wall per 5 m is chosen as quantification index of the development degree of joints in rockmass. Then,in a hydropower station which will be built on Yellow River,the joint number per unit area is analyzed carefully by means of mathematical statistics,and then the relation between development degree of joints and deformation parameter of rockmass is studied. The presented study provides a theory basis for rockmass evaluation.