GWE (B-TECH Civil Engineering 7-8th)

SECTION A

Unit I: Properties of Aquifers, Formation constants, compressibility of aquifers, Equation of motion for steady and

unsteady ground water flow in isotropic homogeneous aquifers, Dupit`s assumptions. Unconfined flow with a recharge,

tile drain problem. Ground water exploration and methods of investigations.

SECTION B

Unit II: Effect of boundaries, interference of water, leaky aquifers, Thiem`s equilibrium formula for unconfined and

confined aquifers and determination of hydraulic properties of aquifers. Partial penetration of an aquifer by a well,

spherical flow in a well. Non equilibrium formula for aquifer (unsteady radial flows).

SECTION C

Unit III: Tube wells, optimum capacity, silting of tube well, design of tube wells in different aquifers, tube well types,

parts, bore hole, strains, its types, well pipe, casing pipe, blind pipe. Construction and working of tube wells, site

selection, drilling operation, cable tool method, hydraulic method, rivers Rotary Method and drilling fluids, well screen

assembly installation, verticality and alignment of tube wells, gravel packing, development of tube wells, sickness, in

construction and corrosion and failure of tube wells, Pumping equipment and hydraulic testing of pumps.

SECTION D

Unit IV: Artificial recharge of ground water, considerations and methods, recharge techniques induced infiltration,

water spreading, flooding, basins, ditching, modification of natural channels, irrigation, recharge pits, shafts and

recharge wells.