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Determination of initial conditions for dam erosion due to overtopping and possible integration into a probabilistic design concept. Dr.-Ing. K. Broich. University of the Federal Armed Forces Munich. Initial conditions Case study Monte Carlo simulation.

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Dr ing k broich

Determination of initial conditions for dam erosion due to overtopping and possible integration into a probabilistic design concept

Dr.-Ing. K. Broich

University of the Federal Armed Forces Munich


Dr ing k broich

  • Initial conditions overtopping and possible integration into a probabilistic design concept

  • Case study

  • Monte Carlo simulation

University of the Federal Armed Forces Munich


Dr ing k broich

dH/dt overtopping and possible integration into a probabilistic design concept

dz/dt

Q

Initial period

depletion

t

University of the Federal Armed Forces Munich


Dr ing k broich

  • Flood wave overtopping and possible integration into a probabilistic design concept

  • Initial breach

  • Initial water depth

  • Outlet

  • Overtopping

  • Dam coverage

University of the Federal Armed Forces Munich


Dr ing k broich

University of the Federal Armed Forces Munich overtopping and possible integration into a probabilistic design concept


Dr ing k broich

Proposal : overtopping and possible integration into a probabilistic design concept

Safety factor

for Overtoping failure of earthen dams

=

Scaling factor on design flood wave

needed to start erosion

University of the Federal Armed Forces Munich


Dr ing k broich

  • Initial conditions overtopping and possible integration into a probabilistic design concept

  • Case study

  • Monte Carlo simulation

University of the Federal Armed Forces Munich


Dr ing k broich

Test case : overtopping and possible integration into a probabilistic design concept

1 . Calculation with scaled design flood wave HQ1000

and initial water depth at flood water level

2 . Calculation with unscaled PMF flood wave

and initial water depth at dam crest

University of the Federal Armed Forces Munich


Dr ing k broich

H overtopping and possible integration into a probabilistic design concept

V

University of the Federal Armed Forces Munich


Dr ing k broich

University of the Federal Armed Forces Munich overtopping and possible integration into a probabilistic design concept


Dr ing k broich

University of the Federal Armed Forces Munich overtopping and possible integration into a probabilistic design concept


Dr ing k broich

  • Initial conditions overtopping and possible integration into a probabilistic design concept

  • Case study

  • Monte Carlo simulation

University of the Federal Armed Forces Munich


Dr ing k broich

University of the Federal Armed Forces Munich overtopping and possible integration into a probabilistic design concept


Dr ing k broich

*) bivariate variable -> volume

University of the Federal Armed Forces Munich


Dr ing k broich

(Hable,2001) overtopping and possible integration into a probabilistic design concept

University of the Federal Armed Forces Munich


Dr ing k broich

The probabilistic method using a Monte Carlo simulation overtopping and possible integration into a probabilistic design concept

(Hable, 2001) can be extended to calculate the

probability of an overtopping failure.

The failure condition has to be substituted by the

mentioned „CIRIA-condition“.

University of the Federal Armed Forces Munich


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