http://202.88.229.59:8080/xmlui/handle/123456789/138 2026-04-14T19:43:02Z 2026-04-14T19:43:02Z Isaac, Dipty Sarin Rangaswamy, Kodi Chandrakaran, S http://202.88.229.59:8080/xmlui/handle/123456789/655 2017-07-18T10:25:41Z 2016-01-01T00:00:00Z

Influence of Initial Conditions on Undrained Response of Soft Clays Isaac, Dipty Sarin; Rangaswamy, Kodi; Chandrakaran, S Soft soils are found along east and west coast of Kerala. They exhibit unusual engineering properties like high natural water content, high compressibility, low permeability and low shear strength. Availability of land for the development of commercial, housing, industrial and transportation, infrastructure etc. are getting scarce nowadays. This necessitated the use of land, which has weak strata, wherein the geotechnical engineers are challenged by the presence of different problematic soils with varied engineering characteristics. Not much work has been done to understand the behaviour of these soils. Hence it is necessary to study the geotechnical behaviour of such soils including the effect of various parameters. As far as Kerala is considered soft clays are predominant in Kuttanad and greater parts of Cochin. Research works carried on Kuttanad clay and Cochin marine clay mainly focused on compaction, compressibility and UCC strength. Clayey soils are impervious and do not permit drainage of water. There will be a cumulative buildup of pore water leading to increase in pore water pressure and reduction in shear strength, finally leading to increase in settlement and deformation. Not much works have been done on laboratory modelling of the soft clays of Kerala and its behaviour under the influence of varying parameters. Soil properties vary from point to point due to the variations of field parameters The objective of this paper is to investigate the effect of various parameters influencing undrained behaviour of Kuttanad clay. Confining stress and density were studied. For this purpose consolidated undrained triaxial test were performed with pore pressure measurements. Typical deviator stress-strain graphs , pore pressure versus strain graphs and stress paths were drawn for all the tests conducted.

2016-01-01T00:00:00Z Philipose, M C Srinivasan, K http://202.88.229.59:8080/xmlui/handle/123456789/141 2017-05-05T06:59:39Z 1995-01-01T00:00:00Z

Construction of Storage-Performance-Yield Relationship for a Reservoir Using Stochastic Simulation Philipose, M C; Srinivasan, K In the past, many researchers have used stochastic streamflow models along with sequent peak algorithm or simulation to obtain storage-reliability-yield (S-R-Y) relationships for a reservoir. These S-R-Y relationships consider only the probability of failure, but no the likely consequences of the failure (vulnerability). In this paper, seprate contours of reservoir performance, namely reliability and vulnerability (event-based), have been developed on the storage-yield plane, using stochastic reservoir simulation. These contours of performance, when superposed, give rise to thje storage-performance-yield (S-P-Y) relationships, the construction of which is illustrated in this paper through a case example. These relationships provide more comprehensive information to the reservoir planner regarding performance than the S-R-Y relationships.

1995-01-01T00:00:00Z Panicker, Soosan J Philipose, M C Haridas, Ajith http://202.88.229.59:8080/xmlui/handle/123456789/140 2017-05-06T06:39:31Z 2008-01-01T00:00:00Z

Buoyant Filter Bio-Reactor (BFBR)-a novel anaerobic wastewater treatment unit Panicker, Soosan J; Philipose, M C; Haridas, Ajith The Buoyant Filter Bio-Reactor (BFBR) is a novel and very efficient method for the treatment of complex wastewater. Sewage is a complex wastewater containing insoluble COD contributed by fat and proteins. The fat and proteins present in the domestic sewage cause operational problems and underperformance in the Upflow Anaerobic Sludge Blanket Reactor, used now for treating sewage anaerobically. The biogas yield from the BFBR is 0.36m3/kg COD reduced and the methane cintent was about 70-80%. Production of methane by anaerobic digestion of organic waste had the benefit of lower energy costs for treatment and is thus environmentally beneficial to the society by providing a clean fuel from renewable feed stocks. The BFBR achieved a COD removal efficiency 80-90% for an organic loading rate of 4.5kg/m3/d at a hydraulic retention time of 3.25 hours. The effiecient COD was less than 100mg/I, thus saving on secondary treatment cost. No pretreatment like sedimentation was required for the influent to the BFBR. The BFBR can produce low turbidity effluent as in the activated sludge process (ASP). The land area required for the BFBR treatment plant is less when compared to ASP plant. Hence the problem of scarcity of land for the treatment plant is reduced. The total expenditure for erecting the unit was less than 50% as that of conventional ASP for the same COD removal efficiency including land cost.

2008-01-01T00:00:00Z