Evaluation and Monitoring of Seepage and Internal Erosion (FEMA P-1032)
Date Published: May 1, 2015
The resource discusses internal erosion processes in embankment dams and levees, specifically focused on monitoring, measuring, and mitigating seepage and internal erosion. The document summarizes current federal practices related to internal erosion monitoring, identifying potential failure modes, assessing risk, and implementing risk reduction measures. It covers historical context, failure statistics, notable failures, and various internal erosion mechanisms. The mechanisms include concentrated leak erosion, backward erosion piping, internal instability, and stoping. The chapter provides insights into the mechanics of internal erosion, defines key terminology, and explores physical mechanisms and conceptual frameworks for potential failure modes analysis.
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Details
Disaster PhaseBefore
File TypePDF
LanguageEnglish
Category
Regulatory ComplianceOperations & MaintenanceAssessmentEmergency PreparednessEmergency ResponseTechnical GuidanceMitigation & PlanningRisk CommunicationDesign & Construction
Audience
PublicCritical Facilities UtilitiesBuilding ProfessionalsBuilding ProfessionalsCommunity Officials
Hazard Type
Multi HazardFloodingInternal ErosionDam FailureFlood ControlOther HazardsDam SafetyEarthquake
Tags
slurry wallsmonitoring methodsprobability estimatesrisk reductionembankment damsrelief wellsslope instabilitymitigation techniquespotential failure modesseepage controlembankment structuremitigation measuresseepage monitoringfoundation drainagedispersive soilsrisk assessmentgeological conditionsgeomembrane panelsweirsevent treedam safetyrisk managementdam failuresflow measurementcrackinganalysisinternal erosionfoundation seepageembankment dam failureponding techniqueswater qualityremediation methodscutoff wallsmonitoringcase historiespiezometersremedial designtrench draincurtain wallfiltersearth damsembankmentseepagerehabilitationemergency responseseepage performance monitoringpiezometer readingsrisk mitigationdecision-makersslurry trench cutofffoundation treatmentbreach mechanismsHerbert Hoover Dikecore materialsTeton Damstructural filtersclassification systemsgroutingcutoff wallseepage performancecutoff trenchwater quantityremediationreservoir levelsseepage issuesrisk analysisremedial groutinggeotechnical investigationdam monitoringfailure progressiondam safety engineeringinstrumentationerosion mechanismsfoundation failureseepage collectionflumesrisk evaluationseepage measurementfailure modesembankment modificationverbal descriptorsdam failurequantitative risk assessmenthydraulic fracturesevent trees