EurekaMag.com logo
+ Site Statistics
References:
47,893,527
Abstracts:
28,296,643
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

An analytical solution for design of bi-level drainage systems






Agricultural Water Management 37(1): 75-92, June

An analytical solution for design of bi-level drainage systems

The linearized Boussinesq equation has been used to formulate a boundary value problem for a bi-level drainage system. The validity of the solution has been established by comparison with an existing solution and field data reported in the literature. The results reveal that the proposed solution can be used in assessing the ground water table behaviour in a bi-level drainage system. The solution has been used to show that with increasing time, the location where maximum hydraulic head occurs moves towards the shallow drain. As the maximum hydraulic head approaches the shallow drain, drain discharge of the deeper drain is comparable with drain discharge from a conventional level drain system with double the spacing of the bi-level drains. Moreover, the decrease in hydraulic head is much slower compared to conventional level drain system once the hydraulic head approaches the shallow drain. Considering several issues that have been put forth as a result of many studies on horizontal subsurface drainage in India, it is proposed that bi-level drainage could be tried as a means of controlled drainage by appropriately deciding the depth of the shallow drain. As the proposed equation can not explicitly be used for drainage design, a computer programme has been reported to determine the lateral drain spacing.

Accession: 003037304

DOI: 10.1016/s0378-3774(98)00034-1

Download PDF Full Text: An analytical solution for design of bi-level drainage systems



Related references

Anonymous, 2007: Design of bi-level drainage systems: an analytical solution using inversion theorem

Kacimov, A.R., 2000: Comment on the paper An analytical solution for design of bi-level drainage systems by A.K. Verma, S.K. Gupta, K.K. Singh, H.S. Chauhan. The hierarchy of models applicable to transient free surface problems of groundwater flow to drains is discussed. The model choice is related to drain type and dewatering stage. Flow pattern is illustrated to vary with decrease of the water table....

Upadhyaya, A.; Chauhan, H.S., 2000: An analytical solution for bi-level drainage design in the presence of evapotranspiration. The linearized Boussinesq equation incorporating the effect of evapotranspiration with appropriate initial and boundary conditions was solved analytically to predict a fall in the water table in a bi-level drainage system. It was assumed that the...

Upadhyaya, A.; Chauhan, H.S., 2000: An analytical solution of bi-level drainage design in the presence of evapotranspiration. Agricultural Water Management 45(2): 9-84

Gupta, S.K.; Singh, K.K.; Chauhan, H.S., 2000: Comment on the paper An analytical solution for design of bi-level drainage systes by A.K. Verma, S.K. Gupta, H.S. Chauhan. Agricultural Water Management 46(2): 3-200

Kiwan, M.E., 1996: Analytical solution for optimum design of furrow irrigation systems. An analytical solution for the optimum design of furrow irrigation systems is derived. The non-linear calculus optimization method is used to formulate a general form for designing the optimum system elements under circumstances of maximizing the...

Anonymous, 1979: Drainage principles and applications. I Introductory subjects. II Theories of field drainage and watershed runoff. III Surveys and investigations. IV Design and management of drainage systems. This publication consists of four separate volumes compiled from edited lecture notes of an international course held at Wageningen. Volume I considers basic elements, physical laws governing groundwater flow, and concepts of the plant-soil-water...

Stibinger, J., 1989: Analytical solution of non-stationary drainage flow for a tile drainage system and for a single horizontal tile. An algorithm to solve a non-stationary drainage flow model for a tile drainage system and for a horizontal single tile is presented. The input data comprises the physical characteristics of the soil, the position of the impermeable layer, and the...

Anonymous, 1974: Drainage principles and applications. Volume IV. Design and management of drainage systems. A series of papers based on lectures delivered at the International Course on Land Drainage at Wageningen. Chapters cover field drainage systems, main drainage systems, control of aquatic weeds, ditch maintenance, drainage of various specified soi...

Feyen, J.C.mpling, P.L.u, F., 1990: DrainCAD: A comprehensive and flexible software package for the automation of the drainage design of agricultural drainage systems. Proceedings of the 3rd International Conference on Computers in Agricultural Extension Programs Fedro S Zazueta editor January 31 February 1-1990 Grosvenor Resort Hotel Disney World Village Lake Buenavista FL: 9