弹性波动测技术在隔河岩水利枢纽中的应用

在隔河岩水利枢纽勘探阶段,用地震、声波法对两岸拱座岩性进行动弹模比较,对坝基均匀性及岩溶、风化、断层进行了测试分析,为初步设计提供了依据。施工阶段,首次用折射波法确定坝基建基面高程、声波预埋式探头方法监测导流洞施工安全及弹性波分类、跨孔剪力波法对坝基固结灌浆效果进行检测;坝肩预裂爆破振动衰减监测和坝基保护层一次爆除振动观测等均直接配合施工,为施工及时提供信息。

Application of Dynamic Testing Technique of Elastic Wave on Geheyan Project

Using a seismo-acoustic testing technique, dynamic eleastic moduli of rock property of arch supports in both banks have been compared with each other. Tests and analysis of dam foundation homogeneity and weathering and faults have been carried out, which provided reference for initial design of the project. During construction period refraction wave method has been used to identify the level of dam foundation building. Safety of diversion tunnel construction has been monitored by using presetting geophone. Grouting effect of dam foundation consolidation has been checked by crosshole shear wave method , etc.