نتایج جستجو برای: drainage canals
تعداد نتایج: 50391 فیلتر نتایج به سال:
One of the most important and complex issues in design soil drainage channels is issue correct accounting filtration process. It necessary to take into account hydraulic parameters composition existing order reduce flow rate ditches with uncoated soil. The article shows how choose its theoretical basis for reducing correctly. Hydraulically convenient one current problems canals. This can be ach...
Incorrect management in Watersheds causes disorder of natural balance in groundwater resource and problems from water drawdown and consequences caused by non- optimum use of these water resources. In this research, in order to investigate the effect of construction of Alborz irrigation canals network on water table of Qaemshahr-Juibar Watershed and determination of maximum permissible wat...
Abstract With increasing sealing of the catchment surface, time outflow water from decreases and volume surface flowing out increases. This phenomenon has a negative impact on balance area, results in an increase frequency flooding, related to inability existing drainage systems collect waters. paper presents modeling hydraulic conditions selected part storm sewage system. The US EPA’s software...
By using a simple paramet erized model of thermomech anically coupled flow in cold ice sheets, toge ther with a physical ly based sliding law which includes a description of basal drainage, we show that relationships between ice flux and ice thickness can realistically be m ul t i -valued, and hence t h a t hydraulically ind uced s urges can occur. 'vVe term t his m echanism h)draulic TllIl-aWa...
Concentration of Some heavy metals in main irrigation and drainage canals water Bakolori Irrigation Project (BIP) were investigated from March 2019 to February 2020. Four sampling stations systematically & randomly selected the two respectively. Water samples collected monthly eight taken laboratory for analysis Cadmium (Cd), Chromium (Cr), Copper (Cu), Iron (Fe), Manganese (Mn), Lead (Pb) Zinc...
Lack of knowledge on soil geotechnical properties can cause many problems in the construction and maintenance of irrigation and drainage networks. In general, all of unconventional soils such as gypsiferous soils can cause some problems to irrigation canals. Some studies have been conducted on a variety of problematic soils, but still there is a need for more research activities and field studi...
EVALUATION OF DRAINAGE CHANNEL DUE TO SEDIMENTATION USING THE HEC-RAS PROGRAM (CASE STUDY ON ROAD DR. SUTOMO)Flooding is one of the natural events that can be detrimental to humans. The flood occurs in form an overflow water and will inundate lowlands or basins. Floods also occur as a result rainwater being trapped basin becomes puddle storage container no longer accommodate amount enters it. T...
Impact of human activities on aluminum contamination in the drainage canals in the Nile Delta, Egypt
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