The Variation Law of Longitudinal Sonic Wave Velocity in Argillaceous Rock in Kohala Hydropower Project in Pakistan

摘要

During the investigation in powerhouse area in Kohala hydropower project, slaking is found in most of the argillaceous rock, whose integrity decreasing with time, and cause the rock strength decreases. During investigation, we performed longitudinal sonic wave velocity test, therefore the variation law is preliminarily confirmed, which could be used as a guide for the supporting of excavation parts in argillaceous rock during construction.