Abstract
In this study, the failure modes of a wedge due to impact of a water jet were examined in a physical model. The water pressures subseqeuntly developed along the block's planar joint faces were measured and their magnitudes examined in relation to the overall wedge stability. Relationships between wedge and jet orientation were investigated for the potential movement of the block, and water penetrating depths along discontinuity surfaces were observed. The results of the model tests were compared with a graphical stability analysis plotted on stereographic projection. The results suggest that water impinging on the surface of a wedge can generate locally high joint water pressures on the block faces with a serious destabilizing effect. As a product of this work, suggestions are offered for improving the stability of rock blocks impacted by a water jet. Consideration of these results for existing dams that display abutment wedges can help in promoting safety and optimizing treatment costs. This paper was presented at the 34th U.S. Symposium on rock mechanics, 27-30 June 1993, University of Wisconsin-Madison. For the covering abstract see IRRD 863389.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
