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ASCE MOP 127 2014

$98.58

ASCE Manual of Practice MOP 127: Hydraulics of Wells- Design, Construction, Testing, and Maintenance of Water Well Systems

Published By Publication Date Number of Pages
ASCE 2014 523
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“Prepared by the Task Committee on Hydraulics of Wells of the Groundwater Hydrology Technical Committee of the Groundwater Council and Watershed Council of the Environmental and Water Resources Institute of ASCE. Hydraulics of Wells: Design, Construction, Testing, and Maintenance of Water Well Systems provides comprehensive treatment of the engineering issues related to the development and management of economical supplies of groundwater. Because groundwater is typically of high quality and dependability, this vital resource is used to supply drinking water in nearly all parts of the globe. Demand for groundwater is expected to increase as population expands and technology advances. Yet groundwater is not free from costs and limitations, including the construction and maintenance of wells and pumping equipment, as well as storage and transmission infrastructure. Threats to well capacity and water quality rise from a variety of factors, such as pollution, overuse, and drought. This Manual of Practice codifies existing practices in the water well industry in order to improve the identification, development, and management of groundwater resources in the future. Topics include:
fundamentals of hydrogeology; efficiency of water well systems; design of water wells; construction, development and testing; corrosion; incrustation; wellhead protection; and maintenance. Appendixes include a detailed example of a system design for a water well and sample technical specifications for drilling, constructing, and testing of water wells. MOP 127 guides engineers and designers through the process of planning, designing, installing, maintaining, and troubleshooting water-well systems. Managers, administrators, and water-well operators at all levels of government as well as in the private sector will find it an indispensable reference to water wells assets.”

PDF Catalog

PDF Pages PDF Title
1 Cover
6 CONTENTS
12 CONTRIBUTORS
18 PREFACE
20 INTRODUCTION
26 1. FUNDAMENTAL CONCEPTS OF GROUNDWATER FLOW
1.1 General
27 1.2 Hydrologic Cycle
28 1.3 Porous Media
30 1.4 Aquifer Systems
36 1.5 Aquifer Storage
40 1.6 Darcy Equation
49 1.7 Basic Equations of Groundwater Flow
51 1.8 Aquifer Flow
54 1.9 Summary
55 1.10 Solved Design Example 1
56 1.11 Solved Design Example 2
59 1.12 References
62 2. HEAD LOSSES, TOTAL DRAWDOWN, TOTAL DYNAMIC HEAD, AND EFFICIENCY OF WATER-WELL SYSTEMS
2.1 General
80 2.2 Head Loss in the Suction Pipe
81 2.3 Head Loss in the Delivery Pipe
83 2.4 Total Dynamic Head
90 2.5 Efficiency of Water-Well Systems
97 2.6 Solved Design Example 1
101 2.7 Solved Design Example 2
104 2.8 Solved Design Example 3
106 2.9 References
108 3. DESIGN OF WATER WELLS
3.1 General
110 3.2 Design of Borehole, Casing, and Screen
116 3.3 Design of Filter Pack
126 3.4 Design of Well Screen
130 3.5 Economic Considerations in Design
145 3.6 Summary
3.7 References
148 4. CONSTRUCTION, DEVELOPMENT, AND TESTING OF WATER WELLS
4.1 General
150 4.2 Site Assessment for Potential Municipal Water Well Sites
158 4.3 Drilling, Installation, and Cementing of Conductor Casing
159 4.4 Drilling the Borehole
189 4.5 Geophysical Borehole Logging
195 4.6 Isolated Aquifer Zone Testing
196 4.7 Water Quality and Yield
197 4.8 Well Destruction Methods
220 4.9 Mechanical Grading Analyses
221 4.10 Lithologic Descriptions of Formation Materials Using Uni. ed Soil Classi. cation System
4.11 Preparation for Well Completion
226 4.12 Installation of Casing, Screen, and Filter Pack
230 4.13 Interaquifer Seals
4.14 Principles of Well Development
236 4.15 Final Development with Deep Well Turbine Pump (Vertical Line Shaft)
238 4.16 Pumping Tests
254 4.17 Flowmeter (Spinner) Survey
255 4.18 Collecting Water Quality Samples at the End of the Constant-Rate Test
4.19 Miscellaneous Final Tasks
259 4.20 Final Report including Analysis
260 4.21 Acknowledgments
4.22 References
264 5. CORROSION OF WATER WELLS
5.1 General
5.2 Theory of Corrosion
267 5.3 Types of Corrosion
271 5.4 Corrosive Properties of Water
273 5.5 Corrosion of Water-Well Systems
276 5.6 Prediction of Corrosion
282 5.7 Evaluation of Corrosion Rate Data
284 5.8 Protective Measures for Corrosion
288 5.9 Troubleshooting for Well Corrosion
289 5.10 Solved Design Example 1
307 5.11 References
310 6. INCRUSTATION OF WATER WELLS
6.1 General
6.2 Theory of Incrustation
311 6.3 Analysis of Groundwater
315 6.4 Forms of Incrustation
6.5 Causes of Incrustation
316 6.6 Effects of Velocity, Pressure, and Temperature Changes
317 6.7 Chemical Incrustation
318 6.8 Physical Incrustation
319 6.9 Biological Incrustation
322 6.10 Character of Iron Deposits
323 6.11 Field Testing of Incrustation
324 6.12 Timely Maintenance
326 6.13 Acid Treatment
330 6.14 Chlorine Treatment
333 6.15 Polyphosphate Treatment
334 6.16 Design Considerations to Prevent Well Fouling
337 6.17 References
6.18 Recommended Reading
340 7. WELLHEAD PROTECTION FOR WATER WELLS
7.1 General
341 7.2 Wellhead Protection and Wellhead Protection Area
343 7.3 Fundamentals of Groundwater Flow and Contaminant Transport
347 7.4 Delineation Methods for the Wellhead Protection Area
354 7.5 A Case Study
360 7.6 Summary
361 7.7 References
362 8. MAINTENANCE OF WATER WELLS
8.1 General
8.2 Causes of Well Performance: Problems and Failures
365 8.3 Preventive Material, Design, and Treatment Choices to Avoid Well Performance Decline and Failure
376 8.4 Preventive Maintenance, Monitoring Methods, and Records
381 8.5 Schedule of Well Maintenance Activities
8.6 Economics of Well Maintenance
385 8.7 The Future: Field and Laboratory Research on Well Maintenance
8.8 Solved Design Example 1
392 8.9 Solved Design Example 2
395 8.10 References
398 APPENDIX A. EXAMPLE OF A WATER-WELL SYSTEM DESINGN
A.1 General
400 A.2 Hydrogeology
402 A.3 Groundwater
405 A.4 Well Site Characteristics
408 A.5 Technical Aspects of Water Wells
409 A.6 Geophysical Logging and Aquifer Zone Testing
412 A.7 Design Aspects of Water Wells
417 A.8 Pumping Tests
424 A.9 Video Survey, Plumbness, and Alignment
A.10 Well Equipping, Operation, and Maintenance
426 A.11 Acknowledgments
430 APPENDIX B. TECHNICAL SPECIFICATIONS FOR DRILLING, CONSTRUCTING, AND TESTING OF WATER WELLS
B.1 General
442 B.2 Drilling Method and Equipment
448 B.3 Well Construction Sequence
466 B.4 Testing For Yield and Drawdown
470 B.5 Video Survey
B.6 Well Disinfection
472 B.7 Figures
473 B.8 Attachments
480 APPENDIX C. GLOSSARY
496 APPENDIX D. NOTATION
508 APPENDIX E. SI UNIT PREFIXES
510 APPENDIX F. CONVERSION TABLE AND USEFUL CONSTANTS
516 INDEX
A
B
C
518 D
519 E
F
G
H
520 I
J
L
M
N
521 O
P
R
S
522 T
523 U
V
W
Z
ASCE MOP 127 2014
$98.58