9780071591201

Design and Build Safe, Efficient Systems for Irrigation and Water SupplyWater Wells and Pumpsis a comprehensive guide to the essential theory and design of ground water structures, wells/tube wells, and pumps, with particular emphasis on problem solving and meeting the requirements of developing nations. It features thorough, up-to-date knowledge of the science and technology of water wells and pumps as well as allied appliances and applications.This authoritative desk reference outlines the construction, operation, and maintenance of water wells for irrigation and water supply. It also presents the development and testing of tube wells as well as a variety of pumps, both location-specific. Using SI units exclusively,Water Wells and Pumpsfeatures: Coverage of a variety of pumps, including those using nonconventional, environmentally friendly means Examinations of ground water recharge methods, well rehabilitation, and animal-powered water lifts Techno-economic evaluation of projects on wells and pumps References and problems at the end of each chapter for research and educational useSolutions for all problems related to designing secure, reliable systems Ground water resources development and utilization Hydraulics of wells Open wells Tube wells and their designs Development and testing of tube wells Rehabilitation of sick and failed tube wells Man- and animal-powered water lifts and positive displacement pumps Variable displacement pumps and accessories Centrifugal pumps Deep well turbine and submersible pumps Propeller, mixed flow, and jet pumps Applications of nonconventional energy sources in pumping

Dr. A.M. Michael served as Project Director, WaterTechnology Centre, Indian Agricultural Research Institute, New Delhi.

Dr. S.D. Khepar served as Divisional Engineer atPunjab State Tubewell Corporation.

Dr. S.K. Sondhi served as Dean, College ofAgricultural Engineering at Punjab University.

Preface	p. xiii
Ground Water Resources Development and Utilization	p. 1
The Hydrologic Cycle	p. 2
Types of Water-Bearing Formations	p. 3
Types of Soil Water	p. 6
Hydrologic Units	p. 7
Minerals and Rocks	p. 7
Influence of Physiography and Climate on Ground Water Availability	p. 9
Hydro-Geological Formations	p. 11
Ground Water Investigations	p. 15
Ground Water Quality	p. 19
Types of Water Wells	p. 28
Ground Water Resource Assessment	p. 29
Status of Ground Water Development in India	p. 30
Artificial Recharge of Ground Water	p. 31
Conjunctive Use of Ground Water with Canal Water	p. 42
Legal Aspects of Ground Water Management	p. 42
Ground Water Pollution	p. 44
References	p. 47
Short Questions	p. 48
Hydraulics of Wells	p. 52
Definitions	p. 52
Aquifer Characteristics Influencing Yield of Wells	p. 54
Steady State Radial Flow	p. 58
Unsteady State Flow	p. 68
Pumping Tests	p. 81
Well Interference	p. 88
References	p. 90
Problems	p. 92
Short Questions	p. 93
Open Wells	p. 98
Open Wells in Unconsolidated Formations	p. 99
Open Wells in Hard Rock Formations	p. 120
Deepening of Open Wells	p. 124
Increasing the Yield of Open Wells	p. 135
Failure of Open Wells Due to Excessive Pumping	p. 141
Sanitary Protection of Wells	p. 141
References	p. 147
Problems	p. 148
Short Questions	p. 148
Tube Wells and Their Design	p. 151
Types of Tube Wells	p. 151
Selection of the Type of Tube Well	p. 168
Plastic Pipes for Tube Well Casings and Strainers	p. 168
Design of Tube Wells	p. 174
Sanitary Protection of Tube Wells	p. 190
Design of Skimming Wells	p. 194
References	p. 197
Short Questions	p. 199
Tube Well Construction	p. 203
Construction of Bored and Driven Tube Wells	p. 203
Tube Well Drilling Equipment and Methods	p. 206
Percussion Drilling	p. 207
Hydraulic Rotary Drilling	p. 221
Drilling with Down-the-Hole Hammer and Air Rotary Drills	p. 247
Miscellaneous Drilling Methods	p. 264
Choice of Drilling Method	p. 270
Installation of Well Screens and Checking Well Alignment	p. 273
Sealing of Brackish and Saline Aquifer Horizons	p. 278
References	p. 280
Short Questions	p. 281
Development and Testing of Tube Wells	p. 285
Objectives of Well Development	p. 285
Methods of Well Development	p. 287
Use of Dispersing Agents in Well Development	p. 303
Development of a Cavity Tube Well	p. 303
Choice of Well Development Method	p. 303
Testing of Tube Wells	p. 305
References	p. 307
Problems	p. 308
Short Questions	p. 308
Rehabilitation of Sick and Failed Tube Wells	p. 311
Evaluation of Well Performance for Diagnosing Cause of Failure	p. 311
Influence of Faulty Design, Construction and Operation on Well Failures	p. 313
Photographic Evaluation of Well Failures	p. 316
Mechanical Failures and Use of Fishing Tools	p. 317
Corrosion and Incrustation of Well Screens	p. 322
References	p. 336
Short Questions	p. 337
Man and Animal Powered Water Lifts and Positive Displacement Pumps	p. 340
Manually Operated Water Lifts	p. 341
Animal Powered Water Lifts	p. 356
Positive Displacement Pumps	p. 365
References	p. 385
Problems	p. 386
Short Questions	p. 387
Variable Displacement Pumps and Accessories	p. 390
Classification of Variable Displacement Pumps	p. 390
Centrifugal Pumps	p. 391
Friction Head in Pipe System	p. 398
Total Pumping Head	p. 399
Cavitation	p. 405
Power Requirements in Pumping	p. 407
Pump Characteristic Curves	p. 411
System Head Curve	p. 418
Selection of Centrifugal Pumps	p. 419
Accessories for Horizontal Volute Centrifugal Pumps	p. 426
Economical Pipe Size Selection	p. 435
Selection of Pump Drive	p. 436
References	p. 437
Problems	p. 438
Short Questions	p. 439
Centrifugal Pumps: Design, Installation, Operation, Maintenance and Troubleshooting	p. 444
Design of Centrifugal Pumps	p. 444
Centrifugal Pump Installation	p. 471
Centrifugal Pump Operation	p. 492
Maintenance and Trouble-Shooting	p. 493
References	p. 500
Problems	p. 502
Short Questions	p. 502
Deep Well Turbine and Submersible Pumps	p. 506
Vertical Turbine Pumps	p. 506
Submersible Pumps	p. 533
References	p. 546
Short Questions	p. 546
Propeller, Mixed Flow and Jet Pumps	p. 549
Propeller Pumps	p. 549
Mixed Flow Pumps	p. 561
Jet Pumps	p. 564
References	p. 575
Short Questions	p. 576
Application of Non-Conventional Energy Sources in Pumping	p. 578
Windmills	p. 579
Hydro-Power	p. 596
Hydraulic Ram	p. 597
Solar Pumps	p. 621
Biogas	p. 625
Unique Requirements in Adopting Non-Conventional Energy Sources in Water Pumping	p. 629
Benefit-Cost Ratio of Pumping Plants Operated by Alternate Energy Sources	p. 631
References	p. 631
Problems	p. 633
Short Questions	p. 633
Techno-Economic Evaluation of Projects on Wells and Pumps	p. 637
Availability of Ground Water Resources	p. 637
Design of Wells and Selection of Equipment for Pumping	p. 647
Economic Evaluation	p. 647
References	p. 670
Problems	p. 671
Short Questions	p. 672
Appendix A	p. 674
Appendix B	p. 675
Appendix C	p. 679
Appendix D	p. 684
Index	p. 689
Table of Contents provided by Ingram. All Rights Reserved.

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Water Wells and Pumps

0071591206

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