The problem of utilization of iron ore tailings . The prospects of iron ore mining in the Russian underground . A method for extracting iron from tailings to 9 % of the original content, by mechanochemical processing. The results of particle size distribution , chemical and mineralogical analyzes of samples collected waste ferruginous quartzites LGOK . Experiments were carried out using the methods of planning optimal experiments , Box-Behnken and included 24 experience. Obtained according to the content of metal recovery in the leach solution of sulfuric acid , sodium chloride , rotor speed and the ratio of disintegrant liquid and solid phases. This dependence allows to determine the optimal parameters of technology in terms of " metal recovery ." The resulting secondary processing of tailings to be used in the manufacture of hardening mixes for stowing as an inert filler and binder counterpart .
Keywords: tailings, mechano-chemical activation, iron ore, ferruginous quartzites, metal recovery
Features of a site of construction of constructions of seaport of Taman are considered. The settlement scheme of influence of new construction of point of loading on an existing complex of tanks is proved. The final and element model of a coastal zone with an arrangement of underground designs of existing and port constructions under construction is constructed. Results of calculation intense the deformed condition of the soil massif and construction designs are given.
Keywords: the pile bases, the soil basis, modeling, a deposit, intense the deformed condition.
The article is devoted to study proposals for determination of transportation of dangerous goods. Methodology of selection of the most optimal route for transportation dangerous goods is presented and consists of 11 steps, and also includes factors influencing movement goods throughout the roads. The methods allow to decrease subjectivity factors of assessments of transportation risk and, thereby, to reduce probability of choosing a wrong way to move dangerous goods.
Keywords: transportation of dangerouse goods, methodology of movement goods throughout roads, safety, factors of safety moving by roads.
The problem of a deviation of elements of an reinforcement of shafts lifting operation is considered eventually. The example of profiling of railings for the mine shaft being in long operation is given, and the statistical analysis of the actual deviations of railings in comparison with standard values is made. Probabilistic approach to determination of need of reconstruction of vertical shafts on a factor of critical deviations of railings from a vertical is offered.
Keywords: vertical shaft, reinforcement, railings, reconstruction, statistical analysis, probability theory