Experimental study on effect of the upstream slope protection type change of an earth rock dam
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Abstract:
In view of the upstream slope protection type change in the process of the reinfor cement of dangerous reservoirs, we conducted a physical model test to study the wave run-up and overt opping sit uation of the dry masonry slope protection type and the concrete type, and det ermined the effect of slope protection type change on the wave run-up and crest elevation. In this paper, we took a reservoir dam for a case study. A wave physical model test of a typical section of the slope protection types was carried out at the scale of 1：15. The test results showed that the roughness coeff icients of the dry masonry and concrete types differed by 0.15. After the change of slope protection type from dry masonry to concrete, the calculation value of the maximum wave run-up increased by 0.56 m, and the test value increased by 0.6 m. In this condition, the original crest elevation could not meet the standard requirements. In addition, after the change of slope protection, the wave overtopping will also increase. The maximum wave pressure on the parapet will increase from 15.9 kPa to 17.8 kPa. The results of the test can provide a reference to the design of similar reinfor cement projects.
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