CECW-EG Department of the Army EM 1110-2-1901U.S. Army Corps of EngineersEngineer Manual Washington DC 20314-1000 30 September -2-1901 30 April 1993 (original)(change 1)Engineering and DesignSEEPAGE ANALYSIS AND CONTROL FOR DAMSDistributionRestrictionStatementApproved for public release;distribution is unlimited.
U.S.ArmyCorpsofEngineers DEPARTMENTOFTHEARMY Washington DC20314-1000
SEEPAGEANALYSISANDCONTROLFORDAMS Engineering and Design
dated 30 September 1986.
2.File this change sheet in front of the publication for reference purposes.
FOR THE COMMANDER:
ENGINEERINGANDDESIGN
SEEPAGEANALYSISAND CONTROLFORDAMS
DEPARTMENTOFTHEARMY CORPSOFENGINEERS OFFICEOFTHECHIEFOFENGINEERS
Engineering and DesignSEEPAGE ANALYSIS AND CONTROL FOR DAMS
1.Purpose.This manual presents the fundamental design principles and guidance concerning seepage considerations for design of new dams and theevaluation of existing projccts.
2. Applicability.This manual is applicable to al1 HQuSACE/0CE elements andfield operating activities having responsibility for the design and construction of civil works projects.
A11earth and rock-fi11 dams are subject to seepage throughthe embankment foundation and abutments.Concrete gravity and arch dams are 3. Discussion.necessary to prevent excessive uplift pressures sloughing of the downstream subject to seepage through the foundation and abutments. Seepage control isby loss into open joints in the foundation and abutments. The purpose of the slope piping through the embankment and foundation and erosion of materialproject i.e. long-term storage flood control ete. may impose limitationson the allowable quantity of scepage.
FOR THE COMMANDER:
DEPARTMENT OF THE ARMY EM111021901DAEN-ECE-G washington D.C. US Army Corps of Engineers 20314100030 September 1986Engineer Manual No.1110-2-1901Engineering and DesignSEEPAGE ANALYSIS AND CONTROL FOR DAMSTable of ContentsSubject Paragraph PageCHAPTER 1.INTRODUCTIONPurpose- Applicability 1-2 1-1 1-1 1-1Objective References- and Scope 1-3 1-1 1-1General Considerations- 1-4 1-5 1-1CHAPTER 2. DETERMINATION OF PERMEABILITY OF SOILAND CHEMICAL COMPOSITION OF WATERDarcy's Law-- 2-1 21Range of Validity of Darcy's Law- Coefficient of Permeability- 2-2 23 2-6 2-4Factors Influencing Permeability Indirect Methods for Determining 2-4 29Permeability--...... 25 2-20Laboratory Methods for Determining Permeability--- 2-6 2-28origin Occurrence and Movement of 2-7 2-30Field Methods for Determining Ground Water"Chemical Composition of Ground Water and permeability-- 2-8 233River (or Reservoir) Water- 2-9 2-34CHAPTER 3. DETERMINATION OF PERMEABILITY OF ROCKPermeabilities of Rock Masses- 31 31Methods for Determining Rock Mass Flow Characteristics in Rock Masses-- 32 31Permeability-- 33 33Applications of Rock Mass Permeability-- 3-4 3-11
