Nature-oriented open coal mining technologies using mined-out space in an open pit. Part I: Analysis of the current mineral mining methods

An analysis is performed into the currently applied coal mining methods using mined-out space in an open pit, with describing their basic advantages and disadvantages. The urgency of further development and wider application of the gritwise-and-capwise methods that involve differently directed advance of a mining front and mined-out space utilized to the limit for overburden storage is pointed out. __________ Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 6, pp. 111–118, November–December, 2006.     

Effect of the mining sequence on the internal dump capacity in an open pit

The formation regularities of mined-out space in an open pit have been established, and assessment of the mined-out space utilization has been performed for flat-dipping and inclined bedded deposits mined by blocks. __________ Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 5, pp. 62–69, September–October, 2007.     

Three-dimensional solution of mining-geometric problems in a graphic dialog regime in planning opencasts

In order to solve a complex of mining-geometric problems in a three-dimensional statement, triangulation models of the interfaces are used that differ from known models by excluding the requirement of uniformity for the support network and the application of structure-forming elements of deposits: planes of tectonic disturbances, borders of geological blocks, etc. The problem is formulated for evaluating the locations of opencast fields within their finite boundaries, and also in the dynamics of working. Algorithms are given for fulfilling the basic graphical and analytical operations in three-dimensional space, including dialog operations. Traditional parameters for analyzing mining operation regime are supplemented by new ones, i.e., physically required work for moving rock mass by means of transport and rehandling of overburden by draglines, and these parameters are determined for each stage of mining. Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk. Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 6, pp. 89–102, November–December, 1999.     

Nature-oriented open coal mining technologies using mined-out space in an open-pit. Part II: A method for selecting rational sequence of mining flat dipping stratified deposits

A method is proposed for selecting a rational mining sequence with internal dumping for flat stratified deposits, using new principles of the open-pit process-space formation and development. The main criteria for substantiating the mining sequence are geometrical form and development direction of the open-pit space, structure of the working wall and transportation network, internal dumping capacities and mining earthworks volumes. __________ Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 1, pp. 64–74, January–February, 2007.     

A large sinkhole in the Verchnekamsky potash basin in the urals

One of the world’s largest sinkholes (80 m long, 40 m wide and 200 m deep) developed in July 1986 as a result of potash mining 425–435 m below the land surface. The depth of the 3rd Bereznikovsky potash mine did not contribute to the collapse, and in fact, the sinkhole occurred in a location where the depth of the mine and the nature of the overburden were considered to be very favorable for mining. The nature and cause of the mine flooding and the collpase have been investigated and are elucidated. This case study is an example of how dangerous flooding can be in evaporite strata, even in deposits where geological conditions of mining appear to be very favorable.     

Concept of a mine of tomorrow for deep mining at gentle copper-and-nickel deposits

The paper discusses the studies devoted to evolution of prospective mining technologies for deep thick strata of the Talnakhsky and Oktyabrsky deposits. The mining-and-technical features of the deposits are considered. A strategic trend is pinpointed towards technological upgrading with automation and robotization of geotechnological processes. The authors prove practicability of concurrent mining of massive sulphide and impregnated ores. The generalized models of mining enterprises are examined, and a concept of a mine of tomorrow is set forth as a system of scientific ideas, principles and priorities. __________ Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 6, pp. 89–100, November–December, 2007.     

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.     

Monitoring opencast operations with the use of laser systems

Results are presented or the first stage of the use of laser systems in coal opencasts to determine the “rock-coal” contact boundaries in the rock mass, as well as to create systems that will automatically update databases on the spatial position of workings in order to calculate the volumes of rock that have been moved. Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 1, pp. 87–93, January–February, 2000.     

Substantiation of low-capacity equipment sets for open pit coal mining,considering land use efficiency

Under discussion is the equipment for open pit mining of scarce coal reserves. Methods of overburden dumping are systematized. A new dumping method is offered; it allows reducing land withdrawal by means of utilizing adjacent open pit. The author presents relations for area of internal dumping, considering coefficient of dumping in the adjacent open pit and the volume of the adjacent open pit. The feasibility of overburden placement in mined-out pits is analyzed.     

Modeling of initial stresses and weakening surfaces by finite-element method

Solutions of geomechanical problems in terms of full and additional displacements are compared for the example of the creation of the mined-out space filled with stowing and the construction of a subway tunnel. An approach to modeling the contact interaction of a block massif is proposed. Data on the stress-strain state of rock mass in forming the mined-out spaces close to extended geological disturbances are presented. Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk. Translated from Fiziko-Tekhnichskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 2, pp. 49–59, March–April, 1999.     

Open-pit mining of a series of slightly inclined coal seams with temporary internal piling

This article studies the feasibility of mining a series of slightly inclined coal seams with transfer of the overburden into temporary internal piles and the secondary removement of the latter in future. A model of an investment project is presented, results of economic appraisal of alternative mining schemes are given, and the conditions under which temporary internal piling can be used are examined. Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk. Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 2, pp. 91–99, March–April, 1999.     

Geomechanical estimate of mining conditions at the makmal gold deposit

The paper describes an estimate of the rock stress-strain state for the current mining conditions at the Makmal Gold Deposit. The rock stability in walls of open-mined chambers, in rock projections and in a dividing pillar is determined. The authors have made recommendations to backfill the mined-out space with overburden rocks and to recover pillars with the one-stage block caving technique.     

Estimating the long-term pillar safety for room-and-pillar ore mining

It is shown for the room-and-pillar mining of ore deposits of alternating thickness that service-life of pillars is much dependent on the value of horizontal stresses in the intact massif. A method is proposed and an effective algorithm is developed for determining the rheological parameters of rocks on the basis of the inverse problem solution by the data on covergence of the roof and floor in mines. __________ Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 6, pp. 11–21, November–December, 2006.     

Social background of up-dating the underground iron-ore mining technology in Siberia

The author analyzes industrial injuries and diseases in terms of iron-ore mining enterprises in Siberia. It is shown that the harm to health is conditioned by the technology chosen for underground mining. To improve the safety of mining operations, it is recommended to select the sublevel caving method with areal-frontal ore drawing and mobile mining machinery for thick steep deposits. __________ Translated from Fiziko-Tekhnicheskie ProblemyRazrabotki Poleznykh Iskopaemykh, No. 5, pp. 98–104, September–October, 2008.     

Mining regime stabilization in working inclined deposits by blocks

A model is suggested for open working of inclined stratified deposits combined with the use of longitudinal and transverse mining systems. The effect of the sequence of forming a quarry field on the regime of mining operations is evaluated and recommendations are made for stabilizing it. Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk. Tranlated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 6, pp. 81–88, November–December, 1999.     

Possibility of commercial application of a mixed geotechnology when developing the deposits of Kursk Magnetic Anomaly

A study is performed into alternative methods of mixed geotechnology application to large-scale mining of different-grade ores at thick deposits. The efficiency of using various combinations of physical and technical procedures for comprehensive development of the Earth’s interior is demonstrated. __________ Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 3, pp. 77–83, May–June, 2007.     

Concept of developing technology in underground mines of siberia and the far east

Features of the condition of underground mines are presented and basic principles for developing ore mining technology are formulated. It is noted that the main direction for improving mining operations in nonferrous metal deposits is development of mining systems with stowing by solidifying mixtures with waste utilization from mining and metallurgical industries based on the complexes of self-propelled machinery. In order to extract lowvaluable ores under conditions of great depths new variants of breast chamber mining systems, and sublevel caving systems with leaving rock intercalations in the bowels are considered. For ferrous metallurgy mines of the region the expediency is demonstrated for radical reconstruction of technology with development of mining system by sublevel caving with end ore drawing and comprehensive use of self-propelled equipment. Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk. Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 3, pp. 85–96, May–June, 1999.     

Express-estimating of investment into hard mineral deposit development

The review of the domestic and foreign cost-estimate methods for the development of mineral deposit is performed. A new approach has been proposed for the operational estimate of the reserves accessibility and costs of a deposit development. The results are presented for the approval of the approach as applied to open-cast mining at copper-porphyritic deposits. __________ Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 4, pp. 90–97, July–August, 2007.     

薄煤层超高水材料充填开采相似模拟试验研究

以山东某矿煤岩赋存条件为原型,取线性比Cl=1/150、时间比Ct=1/150、强度比CR=143×10 -3进行了薄煤层（厚度1.2 m）超高水材料充填开采相似模拟试验研究。设计了试验参数及超高水材料在模型采空区的充填方法,揭示了薄煤层超水材料充填开采采场覆岩及地表活动规律,并与类似条件下的垮落法开采进行了对比。结果表明：与垮落法开采相比,超高水材料充填开采时工作面超前支承压力的影响范围缩小且峰值明显降低,工作面后方上覆岩层稳定时间缩短,没有出现垮落带与明显断裂带;该技术能将地表移动和变形控制在规定要求的范围内,提高充填率有助于降低覆岩活动与地表变形程度。     

Modeling the effect of executive device of a bucket-wheel excavator on the coal face

An algorithm is proposed and substantiated to calculate the optimum trajectory of scooping for the dynamic bucket-wheel and stationary bucket excavators. The applicability of the developed program in determining mineral losses and impoverishment during selective and bulk-selective mining in bedded deposits is demonstrated. __________ Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 6, pp. 42–52, November–December, 2005.