基于声波和地质雷达对建基岩体松弛带的划分

The Method of Relaxation Zone Division of Foundation Rock Mass Based on Acoustic Wave and Ground Penetrating Radar

建基岩体开挖卸荷松弛及其形成的松弛带是水利水电工程中一种常见的现象,对建基岩体的岩体质量有着十分重要的影响,对于松弛带的划分方法一直以来都是水电建设中十分重视的问题。以西南某水电站为例,运用声波和地质雷达相结合的方法,对该水电站左岸坝基建基岩体的松弛厚度进行了综合划分。通过工程实例的良好应用效果,证明了该方法在建基岩体松弛带划分中的可行性和有效性。

The unloading relaxation of excavation of foundation rock mass and its relaxation zone is a common phenomenon in water resources and hydropower engineering,and it has important impacts on rock mass quality. The method of relaxation zone division has always been an important issue in hydropower construction. This paper took the foundation rock mass of hydropower station in southwest as an example,and used the combing method of acoustic wave and ground penetrating radar,made a division of relaxing thickness of foundation rock mass. Through an example of good engineering application,it is shown that the method is feasible and valid in relaxation zone division of the foundation rock mass.