Number 20 Volume 6

Open Access Article

1 - The hydrological evaluation of Rasht Landfill performance
Mohammad Nakhaei Hamid Reza Nassery Vahab Amiri

Nowadays, the pollution generated from municipal waste disposal sites is considered as one of the serious threatsfor environment and underground water resources. In the present study, Rasht Landfill is assessed as one of thecontamination sources in the northern part of More

Nowadays, the pollution generated from municipal waste disposal sites is considered as one of the serious threatsfor environment and underground water resources. In the present study, Rasht Landfill is assessed as one of thecontamination sources in the northern part of Iran. Located in Saravan region, the Landfill is the only landdisposal site located in 20 kilometers south of Rasht and is situated at altitude of 200 meters from sea level. Inorder to determine the structural characteristics, the geological maps of the study area and data from 4 geoelectrical sounding around the landfill site been used. Using 4 samples of sediments from places where the geoelectrical sounding was implemented, the sedimentological analysis was carried out by graining these samples.The results indicate that the sediment thickness and depth of bed rock surface is very low. In this study, VisualHELP software was used to determine the leachate generation rate. The hydrological evaluation of Rasht Landfillperformance followed for two periods of 15 and 50 years ,regarding the climate information of Rasht station asthe nearest synoptic station to waste disposal site and structural features of this site. Based on the considerations,the amount of leachate generation and leaking from the Landfill determined equal to 0.69 m per year. Manuscript profile

Open Access Article

2 - Investigation the possibility of supplying sand of Silica resources Hormozgan province for use in cement industry
Mohammad Poosti Mohammad Yazdi Shazdi Safari

Cement production in our country is increasing day by day. Cements control of production to be standard, nothidden from anyone. Now the combination of silica sand imported from Germany and cement production,concrete preparatio and compressive strength and flexural tests More

Cement production in our country is increasing day by day. Cements control of production to be standard, nothidden from anyone. Now the combination of silica sand imported from Germany and cement production,concrete preparatio and compressive strength and flexural tests conducted on concrete compared with thestandard resistance and will be acceptance or rejection. Due to the existing index of silica has been prepared inseveral region of Hormozgan (region Hajiabad) necessary samples (5 samples) of various outcrops of silica. Thesample is placed on chemical analysis of silica and other elements were determined. Also, in order to identifyminerals and to determine fracture and …, initial sample preparation and thin sections were studiedmicroscopically. The sample was selected according to preliminary studies. These samples were crushed andthen grain classification. Three samples of silica sand inside and The German standard sand molded and thestandard procedure of choice, Compressive and flexural strength of concrete produced, was measured.Comparison of the concrete compressive strength and flexural provided with The silica interventions Theamount of compressive strength and Made of concrete flexural With standard sand (German) and Nyzmqays.hother profile appearance and Standard of physical , the sample More appropriate was selected and suggested. Manuscript profile

Open Access Article

3 - The biosorption of Cu and Mn Ions existing Sarcheshme copper mine wastewater by Saccharomyces Sp
Vahid Khosravi Seyyedeh Felor Mazhar Mahsa Seddighi

In this study, biosorption of Cu and Mn ions from Sarcheshme copper mine wastewater by locally availableyeast, Saccharomyces Sp., was investigated in batch mode. Optimum amounts for various parameters such ascontact time, pH, initial ion concentration, biosorbent dosage More

In this study, biosorption of Cu and Mn ions from Sarcheshme copper mine wastewater by locally availableyeast, Saccharomyces Sp., was investigated in batch mode. Optimum amounts for various parameters such ascontact time, pH, initial ion concentration, biosorbent dosage and temperature were determined. Optimum pHwas determined to be 6. Equilibrium was achieved after 120 minutes and no uptake occurred after that.The experimental sorption data was fitted well to the Freundlich adsorption model but there was not acceptablefitness between Langmuir model and experimental data. Also metal ion uptake was increased as the temperatureincreased showing that this experiment was an endothermic process. Manuscript profile

Open Access Article

4 - Introducing a Model for Road headers' Performance Prediction Based on the Specific Energy and the Angle between Tunnel Axis and the Planes of Weakness
Arash Ebrahimabadi

Road headers offer a unique capability and flexibility for the excavation of soft to medium strength rockformations, hence; are extensively used in underground mining and tunneling operations. A critical issue insuccessful road header application is the ability to evalu More

Road headers offer a unique capability and flexibility for the excavation of soft to medium strength rockformations, hence; are extensively used in underground mining and tunneling operations. A critical issue insuccessful road header application is the ability to evaluate and predict the machine performance. The mainobjective of this research study is to investigate the cutting performance of road headers in coal measure rocksby paying special attention to the influence of discontinuity orientation (alpha angle) and the specific energy.With this respect, a database was established from detailed field data including the measured instantaneouscutting rates (ICR) and geomechanical parameters of the coal measure rocks for each cutting condition throughthe tunnels in Tabas coal mine project. The database was then analyzed by utilizing the statistical method inorder to yield new predictive models. The influence of alpha angle (the angle between tunnel axis and the planesof weakness) on road header performance was investigated and the correlation between them was found to begood (R²=0.96). The analysis of the specific energy also showed that there is a relatively good relation (R²=0.91)between this parameter and ICR. Finally, the new predictive models for ICR (with respect to alpha angle andspecific energy) showed to have highly correlated relationships within the limits of measured values and hencemay successfully be used to evaluate the performance of medium-duty road headers in coal measure rocks. Manuscript profile

Open Access Article

5 - Petrography, Geochemistry and Mineralization of Pb in Hezarabad Area (Ashtian)
Alireza Haddadpour Raziyeh Mohammadi Haddi Golzar

Hezarabad area is located 5 km at south east of Ashtian, Markazi Province. Structurally, the area is located in theUrmia-Dokhtar magmatic belt of Iran. The basement rocks of the area are pelagic limestone, lithic tuffs, andlimestone to sandy limestone, marl, conglomerat More

Hezarabad area is located 5 km at south east of Ashtian, Markazi Province. Structurally, the area is located in theUrmia-Dokhtar magmatic belt of Iran. The basement rocks of the area are pelagic limestone, lithic tuffs, andlimestone to sandy limestone, marl, conglomerate, andesite lava and shale. Andesitic and tuff are the main hostrock of mineralization. The mineralization mostly is vein types in four trends which follow NE-SW trend oflocal faults. The mineralization can be seen also as disseminated, breccia to fills fractures and pore-spaces types.The most important ore minerals are galena, cerosite and sphalerite. The galena is associated mostly barite inlocal faults. The second important mineral is sphalerite which can be seen mostly in tunnels. 40 samples wereanalyzed by Inductive Coupled Plasma Mass Spectrometry (ICP-MS) for Pb, Zn, Ag, As, Cd, Co, Cr, Cu, Mo,Ni. The data processing indicates high anomaly for Zn and Pb and relatively anomaly for Cu, Ag, As, Mo. Theaverage value of Pb is 34525 ppm and average value of Zn is 6108 ppm. The Mo content is reach up to 1182ppm. According to correlation diagrams, there is a high correlation between Pb and Ag and also Ag and As. Itshows that the galena is the main host of these elements. Manuscript profile

Open Access Article

6 - Depositional environments and sequence stratigraphy of the Kangan formation in the Kish field
Maryam Peyravi Mohammad Reza Kamali Hossain RahimPour- Bonab

The Kangan Formation (Lower Triassic) is one of the most important petroleum reservoirs in SW Iran andPersian Gulf that belong to the Dehram Group. Facies analysis from core and cuttings of this formation in theKish Field led to the recognition of 14 facies, indicating More

The Kangan Formation (Lower Triassic) is one of the most important petroleum reservoirs in SW Iran andPersian Gulf that belong to the Dehram Group. Facies analysis from core and cuttings of this formation in theKish Field led to the recognition of 14 facies, indicating deposition in tidal flat, lagoon and oolithic barrier faciesbelts. Facies types and their facies belts reveal deposition in the inner part of a homoclinal ramp platform.Vertical variations of microfacies and well log analysis especially Gamma Ray log demonstrate that the KanganFormation consists of three third order depositional sequences. Each sequences consisting of transgressivesystems tract (lagoonal and tidal flat facies) and highstand systems tracts (barrier/ shoal facies) which arebounded by a type 2 unconformity Manuscript profile

Open Access Article

7 - Estimation of Bojnourd aquifer hydraulic parameters using vertical electrical sounding (VES) data
Majid Altafi dadgar Hossein Mohammadzade Rouh al amin Bahrami

Assessment of aquifer hydraulic parameters (K, T) is very important in groundwater resource management andappropriate decision making. Analysis of pumping test data is the most common and useful method to evaluateaquifer hydraulic parameters. However, this method requir More

Assessment of aquifer hydraulic parameters (K, T) is very important in groundwater resource management andappropriate decision making. Analysis of pumping test data is the most common and useful method to evaluateaquifer hydraulic parameters. However, this method requires specific condition to do and it is a time consumingprocess with relatively high costs. Combination of geo electrical data with hydrogeological measurements willdecrease the costs somehow. In this study, 66 vertical electrical soundings (VES) with Schlumberger array wereperformed in Bojnourd plain and 26 of them were selected to determine the aquifer hydraulic parameters.The real resistance and the thickness of subsurface layers were determined by processing the field data using IPIsoftware and with respect to well logs. Using sounding data, which were performed in the vicinity of pumpingtest wells, and measured water resistivity data for these wells, the corrected transverse resistance and thentransmissivites were calculated, which has acceptable correlation with obtained transmissivites from pumpingtest analysis( T = 0.503 × R_T^′ - 143.6). In addition, the hydraulic conductivities were determined usingformation factor obtained from water quality data (K = 0.02 × F^3.292). Finaly, both iso-K and iso-T maps forBojnourd plain were illustrated using ArcGIS. Manuscript profile

Open Access Article

8 - Qualitative changes Trend (in terms of sedimentation and corrosion) in drinking water of three villages of Sarbandan, Jaban and Ayinehvarzan, in Damavand area
Farzaneh Ghodrati Mohammad Manshouri Mojtaba Syyadi Mahmoud Salari

An intensive decrease has been occurred in discharge of drinking waters in some of villages of Damavand citywhich caused dramatical changes in quality and quantity drinking water of these wells. This research tries tostudy probable qualitative changes in these resources More

An intensive decrease has been occurred in discharge of drinking waters in some of villages of Damavand citywhich caused dramatical changes in quality and quantity drinking water of these wells. This research tries tostudy probable qualitative changes in these resources, as well as evaluating role of qualitative condition of waterin reduction of its quantity. According to the conducted studies, reduction in quantity of wells of the villages canbe attributed to two reasons: 1. Tectonic factors and geology of the region; 2. Chemical factor. Geological andtectonic studies revealed that tectonic factors had no effect on reduced discharge and quality, because tectonicfunctions linearly, while this was a point event. Therefore, it is more likely that there is a relation betweenchanges in quality and chemical factors and conditions. Finally, based on physical and chemical analysis ofwater samples and calculation of Langelier’s index and Rayzanar’s index on one hand, and study of geologicalformations, especially sequences of sediments in north of the region, with most frequent facies being chilefollowed by carbonated, dolomite facies, on the other hand. it can be said that water of studied wells makesediments. Therefore, study of hydrochemical conditions of groundwater of the studied zone, persistentmonitoring of ground water, videometery of wells, persistent discharge measurement, and identification ofsediment of pipe wall are recommended. Also, application of proper methods such as waterjet, ultrasound, acidpickling, and magnetic air shock (separately, or in hybrid manner) results in dissolution of sediments formed onthe wall of well. Manuscript profile

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