折射波法在清江隔河岩水利枢纽坝基建基面质检中的应用

Application of Refracted Wave Method to the Quality Control of the Foundation Rockmass at Geheyan Dam of Qingjiang

本文阐述了利用折射波法,在施工期对清江隔河岩坝基岩体进行的弹性波检测,按其结果将全坝段分成弹性波Ⅰ、Ⅱ、Ⅲ速度区;同时依据本坝址区的动、静岩石力学相关关系,绘出了各速度区相应的弹模、强度值,用以评价坝基岩体质量,确定开挖高程及局部处理深度,为施工设计直接提供参考。工程实践证明,岩体(石)声学是一项有价值的工作,值得进一步完善推广。

This paper presents the elastic wave detection conducted on the foundation rockmass of the Geheyan Dam during construction. On the basis of the detected results, the whole of dam section was divided into three velocity regions of I , II and III. In the meantime, for the elastic moduli and strength values corresponding each velocity region, a correlation of dynamic and static rock mechanics were plotted to evaluate the quality of foundation rockmass and determine the elevation of excavation and the depth of local treatment. Engineering practice proves that the rockmass acoustics method is desirable and should be f uther studied and popularized.