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Showing 1 to 20 of 1606 for “"Drainage"”.
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Seepage through longitudinal drainage trenches
The objective of this study was to determine how the longitudinal drain system works under laboratory conditions. In this study, a bench-scale model was constructed to assess the flow patterns caused by a trench drain in a slope. The experimental variables include the trench spacing (w), seepage …
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Parameter estimation of urban drainage models
… to receiving waters through stormwater drainage systems, which has been practised in the past. This practice is currently changing and the current stormwater management deals with the holistic management of the urban water cycle, which includes stormwater drainage, improvement of …
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TREE ROOT ENCROACHMENT ON LEVEE DRAINAGE SYSTEM
… were to estimate the influence of roots on the drainage facilities associated with the levees along the middle Rio Grande (MRG), and to suggest an appropriate drainage design. This study consists of three research elements: (1) GIS-based analysis in estimating root distribution along levees, (2) …
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Hydraulic characteristics of siphonic roof drainage outlets
Siphonic roof drainage uses an innovative hydraulic design to increase the efficiency ofrainwater disposal. The roof outlet is a critical component of the system and not onlypromotes and sustains priming of the system but also controls the depth of approachflow. This thesis investigates the …
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Effect of urban street pattern on drainage.
… storm occurrence, most cities use streets as the drainage route even though their primary function is for the movement of traffic. As a result, the shape of a runoff hydrograph at the outlet of an urban watershed will vary with the pattern of street arrangement within the watershed. The objective …
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Hydrologic Modeling of Irregular Tile Drainage Systems
… need to prescribe a spacing parameter for tile drainage and, therefore, is applicable to irregular tile drainage systems. When applied to a watershed in east-central Illinois (Upper Little Vermilion River watershed), the model was able to simulate observed trends, such as the minimal surface …
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Aspects of the drainage process in soils
The initial portion of this thesis contains a review of basic theory. An experimental programme was also undertaken to measure soil parameters; and to observe heads and seepage rates during transient flow conditions in experiments. These experimental values were compared with results from finite …
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Critical Elements Recovery from Acid Mine Drainage
… Mn, Co, and Ni products from an acid mine drainage (AMD). As major contaminants, Fe and Al in the solution were sequentially precipitated and eliminated by elevating the pH. After that, a pre-concentrated slurry containing Mn, Co, Ni, and Zn was obtained by collecting the precipitates …
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Einfluss der aktiven venösen Drainage an der HLM auf laborchemische und klinische Parameter: Vergleich mit der konventionellen venösen Drainage
Einfluss der aktiven venösen Drainage an der HLM auf laborchemische und klinische Parameter: Vergleich mit der konventionellen venösen Drainage Manuel Abels (2003) Es wurden die verschiedenen Systeme der assistierten venösen Drainage in Hinsicht auf Effektivität, mögliche Vor- und Nachteile, …
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Understanding subsurface hydrology of controlled drainage (drainage water management) and saturated buffers to optimize nutrient reduction goals in Illinois
Submission published under a 24 month embargo labeled 'U of I Access', the embargo will last until 2024-05-01
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Modelling of urban stormwater drainage systems using ILSAX
… quality in rivers and receiving waters. Urban drainage systems are used to manage urban stormwater. For design of effective and economic urban drainage systems, it is important to estimate the design flows accurately. Many computer based mathematical models have been developed to study …
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Seepage in earth slopes with longitudinal drainage trenches
The major objective of this study was to determine the effect of hydraulic conductivity on the effectiveness and efficiency of longitudinal drains and on the time to reach steady state seepage under controlled laboratory conditions. An apparatus capable of simulating different slope angles and …
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Evolution of chemical composition along river drainage networks
… nutrients (N and P) show little change along the drainage network.</p><p>Sampling of tributaries and source points at high and low elevation within the uniform intrusive bedrock of the Icacos was undertaken to identify spatial variability in weathering processes. Landslides are frequent in the …
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Hydraulic roughness of corrugated, unperforated plastic drainage tubing
Thesis (M.S.)--Michigan State University. Department of Agricultural Engineering, 1971
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Modelling Palaeohydrological Controls in Postglacial Mountain Drainage Basins
… been undertaken. The present study investigates drainage basin hydrology for the Kananaskis Valley immediately after glaciation. Low order drainage basins are analyzed to define a prototypical basin to facilitate groundwater modelling. The surface and groundwater modelling software HydroGeoSphere …
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Remediation of acid mine drainage using natural zeolite
This research focuses on the removal of Fe, Cu, Zn and Mn from synthetic metal solutions and real AMD from Wheal Jane mine using natural zeolite. Laboratory experiments were performed to investigate the effectiveness of natural zeolite as a potential low cost material for the removal of these heavy …
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Artificial Drainage of East Central Illinois, 1820-1920
Made available in DSpace on 2014-12-14T04:57:25Z (GMT). No. of bitstreams: 1 7524439.pdf: 16223354 bytes, checksum: 2ec58741438bb9c3e55ebbffdb94ac3e (MD5) Previous issue date: 1975
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Decentralized model predictive control of urban drainage systems
… model. The inherent nonlinear behaviors of the drainage systems were accommodated by introducing binary variables and linear inequalities to merge different modes of operation into a single expression. The objective function is constituted by 3 cost functions considering several priorities. …
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