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This article considers the application of selected mineral and chemical means, together with the preparation and supply technical equipment in mines in case of different natural hazards (massif instability, fire, methane or climate specific characteristics). It reviews the options for use of new mineral and chemical means for insulation of the heading walls, for gaps infill for strengthening purposes, for insulation of layer section in the corridors, for consolidation of rock cracks, for isolation of inoperative s...

Numerical modeling of water flow has developed to a standard in surface water and groundwater operations. Modeling of water flow in underground mines requires a special approach due to interlinked cavities. The same principle problem occurs in strongly jointed, inhomogeneous groundwater systems, like karst or jointed systems with a statistically well defined structural pattern. The key to simulate hydraulic processes in such environments is the reduction of model-balance-cells, following the requirements of the fl...

According to the general and scientific, evaluation, the main limited factor of open pit mining development in 21st century will be besides the ecology, the consumption of energy and material in the mineral mining process. The subject matter of this paper is related to a definition of contemporary methods of following-up the energy and material consumption what could be considered as the main scientific - research trend in open pit mining in a sense of total costs reduction and higher productivity.

The new producing relationships , conditions and market request are based on common ground – a totally new quality. A quality within instruments, technologies, way of acting and even thinking. The quality which sometimes is incompatible not only with the capacity , but with the good will of the specialists, too. Why that is so? Why the new informational technologies are the Achilles’ heel of mine producing branch in Bulgaria. Why the save jacket is becoming a stone for the drowning man. Why the Higher Mining a...

In the Coal Mines as well as in the Coal Electric Power Plants a first degree problem is the coal quality control. The successful solving of this problem directly improves the economical and ecological parameters of the coal mining as well as of the electricity producing. A necessary condition for these is the obtaining on-line information for the main coal quality parameter - the coal ash content. Last 8 years in Bulgaria Analix Co successfully develop producing and applying instruments for on-line measurements o...