نشریه مهندسی آب
سال پنجم شماره 1 (تابستان 1396)

Ground water use has increased due to reduced surface water So for use of these waters, the quality of ground water should be studied in terms of agriculture and drinking use. In this study, the chemical properties of ground water of Aleshtar plain in the north west of Lorestan province according to the suitability of water for drinking and agriculture is verified. 36 ground water samples were taken and the sodium adsorption ratio, electrical conductivity, TDS, pH, calcium, magnesium, bicarbonate, chloride, sodium, potassium, cation, anion and sulfate was chemically analyzed. Analyzed samples were compared with Schoeller and Wilcox diagrams and observed that most of the samples are suitable for drinking and agriculture. According to Schoeller graph, groundwater quality status of Aleshtar plain is in good condition and is perfectly suitable for drinking use. Also results showed that all samples were classified as C2S1 and slightly salty - suitable for agriculture.

The aim of this study was to determine the efficiency of water treatment plants and water supply network Susangerd remove parasites Giardia lamblia (Giardilamblia) parvum and Cryptosporidium (Cryptosporidium parvum), respectively. The total number of samples taken on the basis of the population of 16 samples was 0.400 liters of water through the filter of 5 microns. The 5 micron filter mud samples collected from different areas in the laboratory by laboratory instruments, including brushes, spoons, sterile, man, Arlene was separated and distilled water. After sedimentation and centrifugation by Lam Sdvyk Raftr and parasites by microscopy to view Aynvryt were counted. Tests pH, turbidity, total dissolved solids, residual chlorine and fecal coliform were performed according to standard procedures in 1011. The average number of counted Lamylya Giardia lamblia and Cryptosporidium parvum in drinking water distribution Susangerd 3 Dddr Lytrbvd 9 per liter. Average turbidity and chlorine residual distribution network NTU6.6 network mg / l 8/0 and utilities output remains Klrbaqy 1.2mg / l respectively. The study showed that water treatment plants and water supply network in the removal of Giardia and Cryptosporidium Susangerd Parvvmbdlyl see these parasites in the water supply network and distribution network did not work

The increasing need to soil as the main aggregates in water projects and water supply channels and the lack of quality and the necessary geotechnical properties of soil in soil improvement today, all with the use of materials and additives are put into consideration. Modulus of elasticity indicates the amount of soil strain against a certain amount of tension. Whatever the value of this parameter is, the more dirt the stresses incurred will have less deformation. The aim of this research effect of modulus of elasticity and the density changes of cement and clay soil compressive strength is a problem. Clay soil samples in this research only and clay soil-cement mixing with 10% and the percentage of moisture in the density of the optimum, 85, 95 and 100 per cent were single-pivot about the test. The results of the experiments indicate that cement by adding elasticity modulus up to 420 times more and increase the elasticity modulus of cement, to shelf a few times (depending on the density) increased. As the density of the sample is, the more it is more greatly increased. Clay compressive strength of cement also has a 20 times increase.

Iran is one of the countries that is weathered in most of its regions with hot, dry and semi-arid weather. According to the average rainfall in the world, which is 860 mm in Iran and 240 mm in Iran, rainfall in Iran is very low.Meanwhile, with the increase and construction of wells and the abundance of underground water reserves, the surface of these waters has fallen sharply, with increasing population, it is necessary to use modern methods of irrigation for optimal use of aquifers and cemeteries.For this reason, in this study, a case study was carried out in Araez Plain, located in the city of Susa, and compared the implementation of canal and one of the newest methods of irrigation, polyethylene low pressure pipe, using hydraulic, using the basics of design, maps, documents Contract, books, articles, pamphlets, calculations, hydraulic modeling, observations and field visits from the stages of material supply, implementation, duration of implementation.The results showed that due to lower water losses and optimal water use, the speed of operation and ease of implementation, the delivery of water to operators in shorter time, less land plots, and the optimal use of hydraulic hydraulics, polyethylene low pressure pipe Canal is preferable.

Irrigation and drainage networks construction are affecting the quality and quantity of groundwater. This study aims to evaluate the quantitative and qualitative changes of Mianab Shushtar plain aquifer after the construction of irrigation and drainage network in 2008. First by checking annual hydrograph of the plain, the changes of ground water storage volume during years of before and after the implementation of irrigation and drainage network were evaluated. During 2005-06 to 2008-09 in the third year, 6.4 million cubic meters of underground water reservoir storage volume decreased and from 2008-09 to 2013-14, 9.07 million cubic meters of underground water storage volume has been added. With comparison in the same period, it was found that change in the reservoir is largely influenced by the amount of annual precipitation. Then calculate the groundwater balance, factors affecting the reservoir volume changes were studied. The results showed that 2008-09 and 2009-10 balance was -3.59 and 5.44. Most important factor in changes in groundwater reservoir was the amount of annual rainfall and operation of the network had not a significant impact in increasing the groundwater level. In the following to investigate qualitative changes of underground water sources, the Wilcox diagram for two years before and after the construction of irrigation and drainage network was used. The results showed that due to high groundwater level before the network operation, more sampling points was in class of too salty and unusable for agriculture. Therefore network operation had not significant effect in the quality of groundwater resources.

Assignment or transfer of irrigation management can be considered in a general definition (reducing government's role) and (D beneficiaries of water) in irrigation management. Participation process that empowers operators at all stages of the program, the opportunity to comment and monitor them during the planning and implementation of intervention programs. The aim of this study was to investigate the establishment of public participation in irrigation networks and Aqil Scroll down and analyze the factors influencing participation of farmers in irrigation networks management. According to statistics provided by the number equal to the population of farmers organizations roughing 4220 people live in this study are as a population study. Since the sampling is done in two irrigation network with its own characteristics. The sampling used in this study will be stratified random sampling and in each of the sampling network to fit in the middle and upstream or downstream network to be deployed will be selected to determine the sample size of the population, Morgan table was used. The sample size was estimated at 364 and finally 351 questionnaires were collected and analyzed After completing the questionnaire, quantitative data contained in the questionnaire were encoded and were analyzed by SPSS software. Statistical analysis of the data used for this section include: descriptive statistics and inferential statistics is after all Thzyh and data analysis research hypotheses were accepted. Therefore, it was concluded that, compared with the participatory management of irrigation networks and drainage Karun more effective public administration performance.

In the process of economic development with population growth and agricultural development, access to water resources will be necessary. Water as the most scare factor in agricultural production, is the main limiting factor in agricultural activities in the country. These factors motivate the value of water as economic good and also effective tools for water demand. In this research that has been done in 2013-2014, the agricultural water value has been calculated with use of estimates Hedonic function for Ramhormoz farmland. In this study sampling was random and the number of samples was88. According to the results, the economic value of irrigation water in the study area is 43177265 Rials per hectare and per cubic meter is 4544.97 .Also results show that the distance from cities, villages and main roads has a negative impact on the price of agricultural land and soil fertility, well, proximity to the river and the land integration have a positive effect on the price of agricultural land in the study area.

The Maroon River, one of the Jarahi River head waters, is located in Maroon Catchment and the upstream of Behbahan City. Maroon Dam with maximum volume of 1193 MCM was built on this river by Khuzestan Water & Power Authority [1]. The dam prevents from seasonal high flood damages and saves large amounts of water for agriculture consumptions. The river has flash floods with high peaks, so it seems that flood control and management are cases of high importance in this catchment and it's necessary to have information about flood volume for flood management, downstream programming and consumption estimation in a water year. Therefore, runoff data were calibrated based on the real precipitation data, using HEC-HMS Rainfall-Runoff Model and Schneider Method. Considering 12 observed floods in the past years, observed and calculated runoff values were compared and the best parameters were calculated for initial & final soil infiltration and time of concentration &Good results from this review were obtained.