Tràn sự cố trên đập đất sử dụng cấu kiện bê tông có liên kết - một giải pháp đảm bảo an toàn cho các đập vừa và nhỏ ở Việt Nam

Abstract

Overtopping is one of the major causes of the failure of earth dams. Use all or a portion of the dam crest length as an emergency spillway to allow water to overflow at the top of the dam during major flood events. This solution was successfully applied to many old dams in the world. The question is what type of material to protect the dam surface helps prevent erosion caused by steep gradient, high velocity flow. This article presents scientific basis, potential application, some main issues in design calculations as well as the results of the test application of solution for emergency spillways using Articulating Concrete Blocks (ACBs) to reinforce the dam surface helps ensure the safety of medium and small earthen dams in Vietnam.