Fuzzy multi-criteria lead and zinc plant site location considering environmental criteria (A case study in Iran)

Author(s):  
Samaneh Babaie Morad ◽  
Javad Behnamian ◽  
Hassan Bagheri
2018 ◽  
Vol 18 (51) ◽  
pp. 165-181
Author(s):  
elham azizikhadem ◽  
kazem rangzan ◽  
mostafa kabolizade ◽  
Ayob taghizadeh ◽  
◽  
...  

1996 ◽  
Vol 34 (12) ◽  
pp. 127-133 ◽  
Author(s):  
Ayse Filibeli ◽  
Füsun Sengül ◽  
Aysen Müezzinoglu

At Manisa Organized Industrial District (OID) chosen as pilot study area, a detailed wastewater profile and pollution control study has been realized. A pretreatment strategy was determined and a wastewater management plan was prepared. Existing central treatment plant was studied and cost items were determined. These evaluations were compared with the redesign options generated from our own wastewater management plan. Same treatment units and their combinations were successively designed for variable flow rates between 100-50,000 m3/d. Thus data for new OIDs of similar nature as Manisa, an optimized treatment scheme as well as its approximate cost varying with the wastewater inflow was generated. Proposals for preparing environmental criteria to be considered and applied in newly establishing or planned OIDs are summarized.


2018 ◽  
Vol 270 (1) ◽  
pp. 132-145 ◽  
Author(s):  
Ömer Burak Kınay ◽  
Bahar Yetis Kara ◽  
Francisco Saldanha-da-Gama ◽  
Isabel Correia

2019 ◽  
Vol 59 (5) ◽  
pp. 435-447 ◽  
Author(s):  
Farhad Farhadi Ayoublou ◽  
Majid Taromi ◽  
Abbas Eftekhari

The construction of tunnel portals in mountainous or slope areas often involves problems, which are closely related to factors, such as slope topography, geology, geotechnics, construction geometry and the tunnel excavation method. The activation of landslides or the acceleration of these events is one of the main challenges faced in the construction of tunnel portals. In this paper, we address the instability problem in Sabzkuh tunnel portal that has been excavated with a complex geological profile and high seismicity in Iran’s High Zagros region. The complexity and intense heterogeneity in geological formations, land acquisition problems and the lack of appropriate monitoring programs led to the instability of the tunnel portal. The excavation process started without applying appropriate techniques for a ground stabilization. The use of inappropriate tunnel excavation methods for this unstable geological structure resulted in an activation of an old Solaghan fault and several collapses in the tunnel. Crossing the collapsed areas and reinforcing the tunnel portal took about 7 months and imposed heavy costs on the project. This case study deals with the importance of the choice of the site location, ground and underground monitoring, analysing and summarizing the collected data in order to prepare a geological model before and during the construction process.


2019 ◽  
Vol 263 ◽  
pp. 01002
Author(s):  
Andrej Bisták ◽  
Zdenka Hulínová

Ropeways usually provide access to locations inaccessible to other means of transport. Due to this fact, the construction of ropeways is extraordinarily taxing in terms of both, technology and logistics. The site location is often in terrain difficult to access, which often precludes deployment of common construction mechanisms in ropeway construction. In such case, it is advisable to deploy a transport mechanism independent of the terrain – a helicopter. Functioning as “flying cranes“, the helicopters have been used in construction industry in Slovakia for six decades now. Having amassed positive experience, even the “conventional“ construction industry of the time, especially its ropeway transport segment, started to use the benefits of helicopters, with helicopter deployment subsequently gaining ground and becoming the mainstream technological procedure. Ropeway construction can hardly be feasible without them even nowadays. Throughout the history of helicopter deployment in construction industry, a constant search of improving the efficiency of their work has been under way, necessitated by the helicopter’s sensitivitiy to weather conditions and work procedures alike. The paper presents an analysis of the factors affecting helicopter operation together with a proposed methodology of modeling their work in simulation models and the benefits of such approach.


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