MEKANIKA TANAH II

Staf Pengajar:Reza P. Munirwan, S.T, M.ScFakultas Teknik Sipil - Geoteknik Universitas Syiah Kuala Banda Aceh

FLOW NET / JARINGAN ALIRAN

FLOW NET / JARINGAN ALIRAN

FLOW NET / JARINGAN ALIRAN

FLOW NET / JARINGAN ALIRAN

FLOW NET / JARINGAN ALIRAN

FLOW NET / JARINGAN ALIRAN

FLOW NET / JARINGAN ALIRAN

FLOW NET / JARINGAN ALIRAN

FLOW NET / JARINGAN ALIRAN

FLOW NET / JARINGAN ALIRAN

FLOW NET / JARINGAN ALIRAN

EXAMPLE

EXAMPLE

EXAMPLENd = 12Nf = 4,3H = 4,0 m

EXAMPLE

QUESTIONk = 2,5 x 10-5 m/s 5 m15 m12 mGambarkan flow net dan tentukan q?

Trench supported by sheet pilesImpermeable clayUniform sand5m6m6m6m

Trench supported by sheet pilesImpermeable clayUniform sand5m6m6m6m

Trench supported by sheet pilesImpermeable clay5m6m6m6mh=6mNd=11Nf=2.5+2.5Uniform sand

Excavation supported by a sheet pileShaleUniform sandWater pumped awaySteel sheet

Excavation supported by a sheet pileShaleUniform sandWater pumped awaySteel sheet

Reduced sheet penetration; possible liquefaction v = 0ShaleUniform sandSteel sheet

Reduced sheet penetration; possible liquefaction v = 0Uniform sandReservoirTail waterShale

Concrete dam or weirReservoirTail waterShaleUniform sand

Concrete dam with cut-off; reduces uplift pressureReservoirShaleUniform sand

Concrete dam with cut-off; reduces uplift pressureReservoirShaleUniform sand

Pumped well in confined aquiferObservation wellpumped wellElevationAquifer headsHDaquiferRadial flowImpermeable stratumPlan

Pumped well in confined aquiferObservation wellpumped wellElevationAquifer headsHDaquiferRadial flowImpermeable stratumPlan

Clay dam, no air entryShaleclayreservoiratmospheric linedrain

Clay dam, no air entryShaleclayatmospheric linedrainreservoir

Clay dam, no air entryObservation wellShaleclayatmospheric linedrainreservoir

Clay dam, no air entry, reduced drain; seepage out of downstream faceShaleclayatmospheric lineNot possiblereservoir

Clay dam, with air entryShaleclayreservoirdrain

Clay dam, with air entryShaleclayreservoirdrain

Clay dam, no capillary, reduced drain; seepage out of downstream faceShaleclayreservoir

Clay dam, no capillary, reduced drain; seepage out of downstream faceShaleclayreservoir

SELESAI