Spillway Gate Failure or Misoperation: Representative Case Histories

摘要

The failure or misoperation of spillway gates has the potential to cause injuryand loss of life. This report discusses the various mechanisms that may lead to the sudden and unexpected failure of opening of spillway gates. Downstream flooding is possible from any of the following: Spillway gate cannot be opened; Spillway gates open accidentally; Spillway gates are opened during a flood; Spillway gates fail structurally; Debris impedes spillway flow; and Spillway gate are operated incorrectly. Case studies are used to describe what went wrong, what happened as a result, and what could have been done to prevent the failure or misoperation. This report also contains guidance on estimating the consequences of spillway gate failure or misoperation and discusses preventive measures and design options for existing dams.