The potential of technogenic formations in mines of the West Siberia

The profit expectations of treating the technogenic formations in mines of the West Siberia are assessed based on the analytical studies. The innovative processing technologies will allow production of marketable concentrates, extraction of noble and rare metals and manufacturing of fractioned ballast stone. Technogenic formation is dumped wastes of previous mining enterprises, which contain sufficient raw material suitable for the efficient commercial utilization and new production with the new technologies applied __________ Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 4, pp. 71–77, July–August, 2008.     

Coal quality control in the context of international standards ISO 9000 - 2000

The paper sets forth scientific foundations and organizational-technical environment offered by ISO 9000 standards that are oriented to product quality management and, thus, product quality planning. The authors describe the results of coal product quality planning with using the QFD methodology, present a model of coal quality control through the coal product life cycle and mining technologies. It is proposed to evaluate the quality management efficiency by the coefficient of concordance between the product quality and consumer’s demands. __________ Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 6, pp. 67–85, November–December, 2008.     

Problems of planning theory for developing bowels with underground mining of ore deposits

A set of problems is considered for planning underground mining of ore deposits. Achievements are noted in domestic mining science in the field of improving planning methods and design parameters for underground mines. Principles in the development of planning theory for mining enterprises at the contemporary level are formulated. Institute of Problems of Complex Development of Bowels, Russian Academy of Sciences, Moscow. Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 3, pp. 80–84, May–June, 1999.     

Determination of coal loss and impoverishment in the nonexplosive mining of deposits with a complex structure

Conclusions  

Rheological analysis of geomechanical processes

The modified variable module method, based on the a priori information about the intensifying daylight surface subsidence in time, is developed. The practical application of the proposed rheological analysis scheme is considered for the chamber mining of potash series. __________ Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 6, pp. 32–41, November–December, 2005.     

Nethodical principles for planning the mining and loading equipment capacity for open cast mining with the use of dumpers. Part I

Based on the analysis of the known calculation methods for the capacity of shovels and loaders at open cast mines, the authors have shown the expediency of the development and computer realization of a procedure for planning the shovel and loader capacity at open cast mines thus increasing the open cast mine planning efficiency due to a large number of optimization parameters, high operational efficiency and accuracy of the calculations. __________ Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 4, pp. 59–70, July–August, 2008.     

Long-term Performance and Costs for the Anna S Mine Passive Treatment Systems

AMD from the Anna S coal mine in Pennsylvania (USA) has been treated successfully since 2004 in the Anna and Hunters Drift (HD) passive systems. The systems, which consist of vertical flow ponds and constructed wetlands, are the largest and most costly mine water treatment project installed by a non-profit group in the USA to date. 15 years of monitoring data show that the systems effectively treated 1910 L/min of flow with pH 2.8–3.1 containing 121–330 mg/L acidity (as CaCO3), 11–31 mg/L Al, 6–33 mg/L Fe, and 6 mg/L Mn. The systems produced effluents with pH 7.5, 134–140 mg/L alkalinity (as CaCO3), < 1 mg/L Al, 1 mg/L Fe, 2–3 mg/L Mn, and never discharged water with less than 60 mg/L alkalinity (106 samples). In 15 years of operation, the systems generated a combined 5600 tonnes (t) of net alkalinity. Unit treatment costs were converted to 2018 U.S. $ and compared to active treatment systems. Over a 20 year period, passive systems generate alkalinity at a cost of $1168/t of CaCO3, which is 50% less than unit costs for lime treatment plants currently operated in Pennsylvania.     

An application of goal programming to production planning in the crushed stone industry

ABSTRACT

The problems facing the aggragate stone industry in Zambia such as low capacity utilization, failure to meet customer requirements, unnecessarily high operating costs, poor inventory control practices, heavy borrowing and overall poor economic performance are as a result of subjective decision-making related to production planning. This is also true of the industry in nearly all member countries of the SADDC(Southern African Development Co-ordinating Conference) where quarry closures are not uncommon.

As a solution to the problem of production planning and control in the crushed stone industry, this paper presents results of an application of the goal programming technique to a Zambian case study engaged in the production of limestone powder for the chemical industry. The formulation of a mathematical model for handling multiple objectives is discussed. The goal programming model can be used by management as a strategic decision support instrument.

Results of the study show that over time work is related to the levels of demand for each product as well as the capacity utilization of the plant. The conflicts among the various goals of the short term production plan are identified. The study suggests that goal programming can provide an improved model to solve the problem of production planning in the crushed stone industry.     

Experimental investigation of plastic pure-shear deformation under simple and complex loadings

Conclusions The inelastic properties of solid bodies under simple and complex loadings that result in pure-shear strain and successive superposition of deformed states of pure shear are investigated experimentally. The strain anisotropy that develops in this case is satisfactorily described by the hypothesis of anisotropic hardening, which must be considered in constructing constitutive relationships of the theory of plasticity of rocks. For these types of loads, there are uniqueσ _i(ɛ _i) andσ ₁(ɛ ₁) cuves that can be used as rating curves for the material in calculations. These effects may be used as a production procedure for controlling the anisotropy of the metal in tubular structural components in mining-machine building and the creation of prescribed (improved) strength properties in these components. Mining Institute, Siberian Division of the Russian Academy of Sciences, Novosibirsk. Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 1, pp. 33–46, January–February, 1998.     

An Evaluation of Metal Contamination in Surface and Groundwater around a Proposed Uranium Mining Site, Jharkhand, India

The East Singhbhum region is a highly mineralised zone, with extensive mining of copper, uranium, and other minerals. The concentrations of certain metals (Fe, Mn, Zn, Pb, Cu, and Ni) were measured in 10 groundwater locations and eight surface water locations for four seasons during 1 year around a proposed uranium mining area. The ranges of Fe, Mn, Zn, Pb, Cu, and Ni in surface water were 0.08–1.21, 0.02–0.32, 0.02–3.48 mg/L, 0.84–14, 1.25–36, and 1.24–15 μg/L, respectively, while in groundwater, the ranges were 0.06–5.3, 0.01–1.3, 0.02–8.2 mg/L, 1.4–28, 0.78–20, and 1.05–20 μg/L, respectively. Only Fe and Mn were found to exceed India’s drinking water standards. The data have been used to calculate a metal pollution index (MPI). The MPI of both groundwater (28) and surface water (10) is well below the index limit of 100, which suggest that neither is generally contaminated with respect to these metals.     

Scientific substantiation and development of a new series of axial fans

The scientific bases are developed for calculating and designing reversible axial fans with optimal aerodynamic parameters. It is expounded how it is possible to estimate strength, dynamical stability and serviceability of main units of fans. The series of axial fans intended for operation in mines and subways is presented. __________ Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 3, pp. 95–106, May–June, 2007.     

How to intensify a fine cleaning process for diamond concentrates by using the products of aqueous environment electrolysis

An electrochemical water-treatment technology is developed to improve the quality and color of diamonds, and to neutralize acidic flows. __________ Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 2, pp. 107–114, March–April, 2006.     

Conditions for the formation of a “particle-bubble” flotation complex

An estimate is given for the minimum distanceh _i at which a particle may approach a bubble during collision under action of forces of a hydrodynamic nature. The thicknessh _crit of the film separating the objects being acted upon is calculated when the film fails spontaneously. The collision is considered effective if the conditionh _crit≥h_i is fulfilled. Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia. Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 2, pp. 94–103, March–April, 2000.     

Regularities of influence of disturbances on thermal emission memory in coal specimens

Features of thermal emission memory are studied experimentally on anthracite specimens under cyclic heating with time delays, wetting, freezing, variable startup temperatures and different thermal loading rates. The regularities of acoustic emission in coal are considered under heating the specimens with time delay and wetting. __________ Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 2, pp. 21–28, March–April, 2008.     

Algorithm for estimating the operational indices of oil wells

An approach is proposed for solution of the problem of estimating the operational characteristics of oil-producing wells. A recurrent algorithm, which makes it possible to allow for available information on oil pool development, is created on the basis of a previously formulated adaptation criterion. Results are presented for computational experiments, which demonstrate the algorithm's effectiveness for the actual indices of well operation in the BS₁₀₋₂ formation of the Sutorminsky field. Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk. Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 5, pp. 115–121, September–October, 1999.     

Remote control,signalization and communication system at Eynez fully mechanized underground Colliery,Turkey

The peculiarities of application of the mine observation system Senturion 600 are considered for continuous gas control at Eynez underground colliery. __________ Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 4, pp. 106–110, July–August, 2007.     

A maximum upside / minimum downside approach to the traditional optimization of open pit mine design

The management of cash flows and risk during production is a critical part of a surface mining venture as well as an integral part of a strategy in developing new and existing operating mines. Orebody uncertainty is a critical factor in strategic mine planning, the optimization of mine designs and long-term sequencing. Traditional optimization approaches do not account for in situ grade variability or deal with geological risk. This paper presents a new approach to mine design based on risk quantification and alternative strategic decision-making criteria. __________ Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 1, pp. 81–90, January–February, 2007.     

Analysis and synthesis of a pneumatic piston drive with variable applied load

Summary In the problem of the motion of a piston with variable external resisting force, it is permissible to neglect the forces of inertia, given certain conditions which are set out in this paper. For analysis and synthesis of the drive, one can make use of the relation, set out in Fig. 5, between the principal dimensionaless numbers. Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 5, pp. 91–99, September–October, 1965     

Comparison of rock mass classification systems

The paper presents the comparison of the most widely-applied rock-mass classifications RMR and Q and a system developed by VNIMI in Russia. It has been shown that the results obtained from using these systems for the forecast of rock mass stability and selection of support types enjoy a satisfactory conformity. __________ Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 4, pp. 71–75, July–August, 2007.     

Blast-Free Mining of Coal Seams by Excavators Equipped with Rotary Dynamic Buckets

The necessity to equip cable excavators with rotary buckets is substantiated. The results of graphic-analytical analysis of the rotary bucket operation are presented, and its main advantages are determined in comparison with conventional buckets in mining coal seams of complex structure. __________ Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 2, pp. 59–99. March–April, 2005.