基于波速特征的路堑边坡岩体强度参数研究

Research on Rockmass Strength Parameters of Cut Slope Based on Wave Velocity Characteristic

岩体强度是岩体工程设计中一项重要参数。传统现场原位测试方法不但耗时长、代价高,且代表性较差,公路、铁路系统不可能大量开展。目前,基于反映岩体质量的波速特征指标间接获取岩体强度参数是一个重要途径。在阐述影响岩体强度参数的基本因素之后,分析了岩体波速特征指标(纵波波速、完整性系数)与岩体质量分级的关系,最后基于大量硬质岩类的实测数据建立起岩体完整性系数与岩体强度参数间的经验定量关系,并最终得到实例检验。

Rockmass strength parameter is an important mechanics index in major engineering. Traditional in situ test method is often time-consuming, costly and atypical, which is impossible to launch much. Now, It is an important way to indirectly get rockmass strength parameters from wave velocity index rock mass which can reflect quanlity characteristic index. After introducing the basic influence factors for rockmass strength parameter, analyses the relationship between quality grading and wave velocity ＆ integrity ratio, and finally, basing on quantitative data from in situ investigation, gives the experiential quantitative relation between the integrity ratios and rockmass strength parameters and the verification of cases.