Lesson 7 - nptel

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Since both the upstream and downstream faces of an embankment are inclined, usually varying in the ratio of 1V:1.5H to 1V:2.0H, the plan view of such a dam in a river valley would look as shown in Figure 11. Version 2 CE IIT, Kharagpur
Though this is entirely satisfactory, the problem remains in providing a spillway to let out flood flows. This cannot be done through an embankment dam, since that would lead to its washout. Instead the spillway portion is usually made as a concrete gravity dam section, as shown in Figure 12 for the layout of Konar Dam on Konar river, in Jharkhand. 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 and 8: An embankment dam is not as impervi
Page 9: Here, too it may be observed that t
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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