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One of fundamental dependence for estimation of metals ISL process effectiveness is working solution productivity function of block operation time. As a rule, that dependence is set by test at pilot site before the whole deposit exploitation. Other way to set that dependence consists of uranium ISL, kinetics known differential equations solving, which still does not give reliable results. The report offers experimental analytical method of that task - solution based just on one experimental dependence – uranium ...

The methane is a main component of the natural gas and combines the chemical inertia and physical mobility thus it is unusual ecological fuel. Natural gas is transported by gas pipeline and a lot of possibilities for it’s storage are offered. It’s a main precondition for the sustain energy supply. Analogy in gas and electricity supply system makes a trend to convergence in both sectors in energy. The report gives a model for Energy Transport System integrated a gas and electrical grid. This is condition for sa...

The Sar-Cheshmeh porphyry copper deposit is located in southeastern Iran and is associated with diorite/granodiorite to quartzmonzonite of Miocene age. Copper mineralization was accompanied with both phyllic and potassic alteration. Three main mineralization related alteration episodes (potassic, transition, and phyllic alterations) have been studied in terms of mass transfer and element mobility during the hydrothermal evolution of the Sar-Cheshmeh deposit. In order to illustrate these changes quantitatively, iso...

The methodological assessment of the geological phenomena (geotopes, geosites) is an important step in judging their geoconservation significance. The present Expert Card provides a tentative test for assessment based on 16 common criteria: aesthetic, scientific, research, educational, ecological, entertainment, ethnographic, social and spiritual values, sense of place, possibility for inclusion in geopark, sensitivity, degree of study, preservation, exposure and access. The first 7 criteria are considered importa...

A simple method for determination of bearing strength of weak floor strata in underground mines has been evaluated based on physical modeling approach, with regards to plate loading test conducted on simulated floor strata. This paper presents plate size effect on floor bearing strength of coal measures strata. Plate loading tests were carried out for varying size and shape of footing plates. The analysis was made for model scale footing. The load exerted by the plate on the floor strata was assumed to be uniforml...

The determination of the recoverable lignite layers requires the thorough knowledge of the lignite quality distribution in the site. The lignite quality is seriously affected by the inorganic impurities included either inside the lignite mass or/and in the thin intercalations coexcavated with lignite. The present study deals with the distribution of the lignite quality in the Southern Field Mine lignite deposit giving special attention to the energy content, the ash content and the CO2 content. Specific equations ...