Lesson 7 - nptel

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3. Decked with asphalt or concrete membrane on upstream face with drains (Figure 10) All are provided with a chimney filter connected to a horizontal blanket. Version 2 CE IIT, Kharagpur
Here, too it may be observed that the clay core with relatively very low permeability or the asphaltic and concrete membranes serve to reduce the quantity of seepage water. The rockfill shell only serves as a support to the core or membrane. The phreatic line through the rock fill is very gently inclined due to the materials of high permeability. Version 2 CE IIT, Kharagpur
Page 1 and 2: Module 4 Hydraulic Structures for F
Page 3 and 4: Instructional objectives On complet
Page 5 and 6: Version 2 CE IIT, Kharagpur
Page 7: An embankment dam is not as impervi
Page 11 and 12: Though this is entirely satisfactor
Page 13 and 14: Another layout of the combination o
Page 15 and 16: Both the spillway section and the p
Page 17 and 18: The example of Beas Dam at Pong (Fi
Page 19 and 20: Another example is given in Figure
Page 21 and 22: spillway. Overtopping may also be c
Page 23 and 24: 2. Conduit leakage: This is caused
Page 25 and 26: drops to zero, which means the soil
Page 27 and 28: Version 2 CE IIT, Kharagpur
Page 29 and 30: 1. Safety against hydraulic failure
Page 31 and 32: 2. Safety against seepage failures
Page 33 and 34: for resisting the piping action. Th
Page 35 and 36: Inclined/Vertical Filter Inclined o
Page 37 and 38: Transition Zones and Transition Fil
Page 39 and 40: Rock Toe The principal function of
Page 41 and 42: Toe Drain Toe drain is provided at
Page 43 and 44: Grout Curtain Grout Curtain in Perv
Page 45 and 46: Relief Wells Relief wells are an im
Page 47 and 48: As may be observed from Figure 48,
Page 49 and 50: Quantity of seepage flow An embankm
Page 51 and 52: The slope stability methods general
Page 53 and 54: The above critical conditions are e
Page 55 and 56: Earthquake Condition In the regions
Page 57 and 58: In some rivers, the floods may be s
Page 59 and 60:
To reduce the hydrostatic pressure
Page 61 and 62:
Movements Measurement of movements
Page 63 and 64:
Horizontal movement gauges Cross-Ar
Page 65:
Electrical Piezometers: Electrical
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Lesson 7 - nptel

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