Embankment Dam Failure Analysis (FEMA 541) - Association of ...

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WEDNESDAY, June 27 Morning Current Practice (cont.) Private Experience and Case Example Owners BC Hydro (Derek Sakamoto) 0740 Consultants Mead &Hunt Inc. (Ellen Faulkner) 0810 Catalino B. Cecilio Consult. (Catlino Cecilio) 0830 Freeze & Nichols (John Rutledge) 0850 Break 0910-0930 Group Discussions (Nate Snorteland) 0930 Lunch Break 1200 Afternoon Tour of ARS Hydraulic Laboratory 1300-1500 THURSDAY, June 28 Morning Research And New Technology Risk Assessment Research (David Bowles) 0800 Overtopping and Breach Research Research at CSU Related to Design Flood Impacts on Evaluating Dam Failure Mechanisms (Steve Abt) 0830 Limited Overtopping, Embankment Breach and Discharge (Temple and Hanson) 0900 Break 1000 Dam Break Routing (Michael Gee) 1020 Overview of CADAM and Research (Mark Morris) 1050 Embankment Breach Research (Kjetil Arne Vaskinn) 1120 Lunch Break 1150 Afternoon Group Discussions (Nate Snorteland) 1330-1600
B PRESENTATIONS ________________________________________________________________________ B-1
Page 1: PROCEEDINGS FEMA WORKSHOP, JUNE 26-
Page 5: TABLE OF CONTENTS Page # OVERVIEW
Page 9 and 10: 2 OUTLINE OF THE WORKSHOP AGENDA __
Page 11 and 12: 3 SUMMARY OF WORKSHOP PRESENTATIONS
Page 13 and 14: He also discussed research needs to
Page 15 and 16: what is reasonable to the engineer
Page 17 and 18: 4 DAM FAILURE ANALYSIS RESEARCH AND
Page 19 and 20: The break down of the individual to
Page 21 and 22: The break down of the individual to
Page 23 and 24: TOPIC NUMBER RESEARCH / DEVELOPMENT
Page 25 and 26: TOPIC NUMBER RESEARCH / DEVELOPMENT
Page 27 and 28: TOPICS Research/Development Topics
Page 29: TOPICS increasing VALUE 2 20 12 15
Page 33: A AGENDA __________________________
Page 38 and 39: Dam name: Williamsburg Dam (Mill Ri
Page 40 and 41: Dam name: Walnut Grove Dam Location
Page 42 and 43: Dam name: Saint Francis Dam Locatio
Page 44 and 45: Dam name: Baldwin Hills Dam Locatio
Page 46 and 47: Dam name: Black Hills Flash Flood (
Page 48 and 49: Dam name: Kelly Barnes Dam Location
Page 50 and 51: Dam name: Timber Lake Dam Location:
Page 53 and 54: Will a Dam Failure Occur? Assessing
Page 55 and 56: Reclamation’s Risk Management Res
Page 57 and 58: Roles of Dam Failure Analyses • I
Page 59: B-3
Page 62 and 63: 2/6/02 %DFNJURXQG ✦ 7UDGLWLRQDO &
Page 64 and 65: 2/6/02 (VWDEOLVKLQJ WKH %DVH 6DIHW\
Page 66 and 67: 2/6/02 &XUUHQW 'DP 6DIHW\ 5 ' ✦ 5
Page 68 and 69: 2/6/02 FRAMEWORK FOR RISK ASSESSMEN
Page 70 and 71: 2/6/02 1.6E-02 ([DPSOH /2/ 5LVN 'LV
Page 72 and 73: 2/6/02 5LVN $QDO\VLV 5 ' ✦ 0HWKRG
Page 75 and 76: The Uncertainty of Embankment Dam B
Page 77 and 78: model (Fread 1988). These models si
Page 79 and 80: Predicted Breach Width (meters) 300
Page 81 and 82: Table 1. - Uncertainty estimates of
Page 83 and 84: Summary of Uncertainty Analysis Res
Page 85 and 86:
control seepage and uplift pressure
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Results — Peak Outflow Estimates
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Conclusions This paper has presente
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B-5
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each failure mechanics are not well
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Fread (1971,1977,l988,l993) used a
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3. Analytical Parametric Breach Mod
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Figure 3. Side View of Dam Showing
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Figure 5. Teton Dam: Predicted and
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unsteady flow equations with the se
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Figure 8. Routing Curves for SMPDBK
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K and X are computed as follows: K
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Figure 10. Profile of peak discharg
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Fread,D.L., and Hsu,K.S. (l993) “
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B-6
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-Application of the numerical model
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45 m 3 /s and at low water level di
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Other recommendation deals with the
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The 2-d flood calculations and the
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The breach hydrographs for the loca
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1) Rectangular mesh # 10m without b
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5. DEVELOPMENT OF RESCUE ACTIONS De
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Emergency action plans prepared ear
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The determination of flow hydrograp
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FEMA/USDA WORKSHOP OKLAHOMA CITY JU
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SIGNIFICANT HAZARD POTENTIAL “Dam
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SELECTING HAZARD POTENTIAL CLASSIFI
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GUIDELINE GOALS • Repeatable Clas
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Permanent Structures • Single fam
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Lifeline Disruption Easy to Restore
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ENVIRONMENTAL DAMAGE • Habitat an
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RISK BASED ASSESSMENT 1. Assume fai
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B-8
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It is common that dam failure analy
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A similar situation exists in dams
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Edison Pond Dam may have resulted i
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B-9
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However, most of the dams that fail
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The side slopes are sometimes steep
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In Georgia, we use dambreak modelin
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In closing, I wonder if we in the d
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ADJUSTING REALITY TO FIT THE MODEL
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CALIBRATION CORRELATION TO REALITY
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New age modelers Post-modern hydrol
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B-11
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Step 1: Determine Dam Failure Scena
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Table 1 Guidance for Estimating Whe
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The parameter DV may be used to sep
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Table 2 Recommended Fatality Rates
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B-12
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The procedure was intended to provi
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Although this failure occurred seve
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Qmax equation needs to be updated c
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Dam Failure Analyses Workshop Oklah
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Stability Analyses Programs to Dete
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Milner Dam • Control of Seepage F
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•7
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Santee Cooper East Dam • The Emba
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Dayton Dam Canal Embankment Failure
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Canal Embankment - before failure 2
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The Breach • With the reservoir s
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Breach - 7/20/96 2/12/02 FERC-CRO J
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July 22, 1996 Inspection • The ne
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Secondary Breach Location 7/22/96 2
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Horses on dunes 7/22/96 2/12/02 FER
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Breach 9/30/96 2/12/02 FERC-CRO Jun
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Reconstruction of the Canal Embankm
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Filling in Canal Bottom 8/27/97 2/1
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Impervious Core in breach 9/30/97 2
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Canal Embankment 1/15/98 2/12/02 FE
Page 239 and 240:
Presentation for FEMA / USDA Worksh
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• Life Safety Model • Environme
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B-15
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Case Study Setting The Chalk Hill h
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ased on ranges given in the BRAECH
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B-16
Page 263 and 264:
Current Dam Safety Research Efforts
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Overtopping Facility • Near-proto
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Flow Classification Nappe Flow Skim
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Friction Factor 10.00 Darcy Frictio
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Recent Developments in the Research
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ACB Mats Placement 12
Page 276 and 277:
Vegetated Vegetated 14
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Overtopping Testing Threshold Level
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30 Design Curves 28 26 24 Articulat
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Flow Flume Setup Top of flume wall
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10 Analysis D 50 C u -0.25 [1.0805%
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Limited Overtopping, Embankment Bre
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development of concentrated flow, 2
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0.1 k d (m 3 /N-h) 0.01 0.001 τ c
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SUMMARY Research efforts at the ARS
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B-19
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Hydrologic Engineering Center Missi
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Schematic of the Alamo Dam study ar
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Cross-section Data Editor • Optio
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Use of GIS/DEM data RAS cross secti
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RAS Unsteady Flow • Overview •
Page 310 and 311:
Pre-processing Geometry • For uns
Page 312 and 313:
Bridge Hydraulic Properties Plot Hy
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Unsteady Flow Simulation Manager 1.
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Viewing Unsteady Flow Results • A
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Gate Section
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Future Work • Dam & Levee Breachi
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Product Availability • Internal t
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MORRIS 1 CADAM & IMPACT: European R
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MORRIS 3 • To create a database o
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MORRIS 5 • Dam-break wave along a
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MORRIS 7 SELECTED RESEARCH FINDINGS
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MORRIS 9 site. The results varied s
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MORRIS 11 be appropriate for the si
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MORRIS 13 Funding of European resea
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MORRIS 15 Breach Formation Flood Pr
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MORRIS 17 their findings and future
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MORRIS 19 Theme 4 Sediment Movement
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MORRIS 21 (Italy), Politechnika Gda
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Issues, Resolutions, And Research N
Page 351 and 352:
and is presented in detail by Mark
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The most commonly applied approach
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Test no 1,2,3,5,7, and 8 will be us
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• breach tests A local contractin
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5. BUDGET AND TIME SCHEDULE The who
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Catalino Cecilio Catalino B. Cecili
Page 364 and 365:
David Gutierrez California Dept. of
Page 366 and 367:
John Ritchey Dept. of Environmental
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