This book is a comprehensive guide to the use of low-pressure pipelines instead of canal distribution systems for surface irrigation. Buried pipeline systems offer improvements over canals, without the sophistication and high cost of pressurized sprinkler and trickle irrigation. It is, therefore, an intermediate irrigation technology, which may be more appropriate on many irrigation schemes in low- and middleincome countries. It will normally be more efficient and more convenient in operation than conventional canal systems, with fewer environmental problems. The costs are considerably lower than for sprinkler or trickle systems, and comparable to those of lined canals. The book identifies circumstances where buried pipe systems will be most appropriate, identifies the different types of system, and presents recommendations on selection, design, construction, operation and maintenance of buried pipeline systems.
ACKNOWLEDGEMENTS vi PREFACE vii Chapter 1 BURIED PIPE DISTRIBUTION SYSTEMS FOR SURFACE IRRIGATION 1 Chapter 2 DISTRIBUTION SYSTEM SELECTION 23 Chapter 3 SYSTEM PLANNING AND DESIGN 57 Chapter 4 HYDRAULIC DESIGN 75 Chapter 5 DESIGN CONSIDERATIONS FOR COMPONENT STRUCTURES 99 Chapter 6 SYSTEM CONSTRUCTION 141 Chapter 7 POST-CONSTRUCTION ISSUES 167 Chapter 8 COST ANALYSIS OF BURIED PIPE DISTRIBUTION SYSTEMS 175 Chapter 9 TRENDS IN THE UPGRADING AND DEVELOPMENT OF BURIED PIPE SYSTEMS 189 APPENDICES 191 REFERENCES 217