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2015 - 201726
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Subject: Soil and Water Engineering × End date: 2017 × Start date: 2015 ×
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Now showing 1 - 9 of 26
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    ThesisItemOpen Access
    Groundwater studies in lower part of Ganga-Ramganga interbasin using co-active neuro fuzzy inference system and fuzzy logic
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2015-06) Pradhan, Sucharita; Shiv Kumar
    The present study was undertaken in lower part of Ganga-Ramganga interbasin to investigate groundwater behavior, to prepare groundwater inventory for the assessment of groundwater utilization development stage and to study the comparative performance of Co-active Neuro Fuzzy Inference System and Fuzzy Logic rule based model to predict the seasonal depth to water table. Four groundwater models were developed using net groundwater recharge, net groundwater discharge and previous water table depth as input parameters in which model 1 andmodel 2 were developed using seasonal data and model 3 and model 4 were developed using annual data as input for both pre-monsoon as well as post-monsoon seasons. Neuro Solution 5.0 software with 71 % of total data having two to four Gaussian membership function was used for identification of most efficient network among 5 different CANFIS structure whereas Fuzzy Logic Toolbox with MATLAB R2010a was used to develop Fuzzy Logic rule based models. During the study period of 23 years, two hydrograph stations were on rising water table trend; eight hydrograph stations were neither on rising nor falling water table trend and nineteen hydrograph stations were found to be on falling water table trend during both pre-monsoon and post-monsoon seasons. The water table trend for rest hydrograph stations was not same during pre-monsoon and post-monsoon seasons. Numbers of minor irrigation structures like private tube wells and pump sets on bore wells along with area irrigated by different minor irrigation structures were increasing at an alarming rate. The cropping pattern revealed an increasing trend of area under high water demanding crops like rice and wheat while area under all minor crops except vegetables were found to be decreasing. The groundwater inventory indicated that during the study period, out of 25 blocks of study area, 22 blocks transformed from lower category to higher category of groundwater utilization development stage. The values of performance indicator such as R2, MAD, RMSE, CVRE, CE, r, APE and PI were calculated to evaluate the performance of CANFIS and Fuzzy Logic rule based models. Based on the values of performance indicator for CANFIS models, model 3 with CANFIS-2 structure and model 4 with CANFIS-1 structure were selected for prediction of depth to water table of pre-monsoon and post-monsoon seasons respectively. Further on the basis of values of performance indicator for Fuzzy Logic rule based models, model 3 and model 4 were selected for prediction of depth to water table of pre-monsoon and post-monsoon seasons respectively. By comparing CANFIS and Fuzzy Logic models on qualitative and quantitative basis, Fuzzy Logic rule based models were found to be better than CANFIS models. It was also concluded that, even though the results of CANFIS models were not as accurate as that of Fuzzy Logic rule base models, still CANFIS models confirmed its potential to recognize the trend of depth to water table during the period of study.
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    ThesisItemOpen Access
    Effect of shape and size of end sill on hydraulic energy dissipation behaviour in inclined spillway
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2015-06) Jaiswal, Shatruhan; Akhilesh Kumar
    In this study laboratory experiments were conducted to observe hydraulic energy dissipation behaviour through the formation of hydraulic jump in an inclined spillway with SAF stilling basin using different shapes and sizes of end sill for varying discharge conditions. In all cases the total drop was kept constant. The observation were recorded using different combinations of height and shapes of end sill such as rectangular end sill (RES), triangular end sill (TES), semi-circular end sill (SCES), diagonal vertical upstream end sill (DVUES) and diagonal vertical downstream end sill (DVDES). These end sills were used for three heights of 3 cm, 4 cm and 5 cm at selected discharges of 1.65 lit/sec, 4.4 lit/sec, 4.9 lit/sec and 5.5 lit/sec respectively. Required flow parameters like pre and post jump depth of flow, height of jump were experimentally observed for 60 different combinations of end sill shape, discharge and height of end sill. Based on these observations, pre and post jump flow energy was determined and accordingly amount of relative loss of energy, hydraulic jump efficiency were calculated and compared. It was observed that in case of triangular shaped end sill, the maximum relative loss of energy occurred in 07 combinations of end sill height and discharge out of total 12 combinations tried and in no case it provided the minimum energy loss. Similarly, semi- circular, rectangular and diagonal vertical downstream shaped end sill provided minimum energy loss in 4 cases out of 12 combinations tried for each while each of them provided maximum energy loss only in one case. The diagonal vertical upstream shaped end sill provided maximum and minimum relative energy loss in only one case each. It was also found that the triangular shaped end sill resulted in minimum height of jump, in general, for different combinations of height and discharge.
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    ThesisItemOpen Access
    Pollution assessment of river Ganga segment in Uttarakhand
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2017-08) Dabral, Ashish; Kashyap, P.S.
    Soil erosion due to rain and wind action is a serious problem in India. Its negative impacts include reduction in soil productivity, silting of dams and reservoirs, deficits in water availability, pollution of water courses, serious damages to properties by soil-laden runoff, and desertification of natural environments. In the present study, chemical and physical parameters of the river were observed. The river Ganga segment in Uttarakhand was taken as study area from Devprayag (30.140N, 78.590E) to Balawali (29.640N, 78.10E). From the study area, a total of twelve locations were selected and water samples were taken in February and June. The classification of the locations of the samples of both the months for the utilization of water for various purposes like drinking water source without conventional treatment but after disinfection, fish culture and wild life propagation and irrigation and industrial cooling or controlled waste disposal was done for useful interpretation of which water could be used for what purposes according to desirable and permissible limits of pH, EC, TDS, free CO2, chloride, total acidity, calcium hardness, total hardness and magnesium hardness.
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    ThesisItemOpen Access
    Simulation of runoff and sediment yield from a hilly watershed using Soil and Water Assessment Tool (SWAT) and Wavelet Neural Network (WNN) models
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2017-08) Jillani, Asima; Anil Kumar
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    ThesisItemOpen Access
    Study of soil scour pattern downstream of an inclined spillway with SAF basin using selected shapes and sizes of end sill
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2016-06) Sweta Kumari; Akhilesh Kumar
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    ThesisItemOpen Access
    Impact of climate change on soil erosion vulnerability in Brahmani river basin: Application of the Revised Universal Soil Loss Equation (RUSLE)
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2016-05) Behera, Madhusmita; Kashyap, P.S.
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    ThesisItemOpen Access
    Suspended sediment yield modelling using artificial neural networks
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2016-06) Kushwaha, Daniel Prakash; Devendra Kumar
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    ThesisItemOpen Access
    Rainfall run-off and run-off sediment modeling using soft computing and statistical techniques
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2016-07) Pratibha Kumari; Pravendra Kumar
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    ThesisItemOpen Access
    Hydrological assessment of Brahmani river basin using soil and water assessment tool with future climate scenario
    (G.B. Pant University of Agriculture and Technology, Pantnagar - 263145 (Uttarakhand), 2016-03) Dash, Sonam Sandeep; Dash, Sonam Sandeep; Anil Kumar; Anil Kumar