Collapse in the mines can be foreseen in advance and the caving-in location and time can be identified. This has become possible due to the basic research carried out by scientists of the Ioffe Physical & Engineering Institute, Russian Academy of Sciences. Specialists of INTERUNIS company have undertaken to embody the above concepts in a prototype model of the device.
The system will consist of the ’’case on wheels’’ containing the computer and signal processing cards, and several sensors (16 sensors are planned to be installed in a test sample) connected to the computer by cables. The sensors will be immured in the walls of the mine or of any other underground depositary to be surveyed. The sensors catch elastic waves emitted by rock while breaking up, once a certain threshold value is reached, the device will produce danger warning and will indicate the exact location where the breaking-down is going to take place.
The researchers have proceeded from the fact that rock does not disrupt at an instant, the breaking-down is sometimes preceded by a lengthy period of strain accumulation. Initially, small bed joints are formed in different locations, the process can last pretty long, but when the bed joints become numerous, they immediately combine into large cracks and emit elastic waves of major energy - at this point, the process becomes critical. During major earthquakes, breakings dissect the earth surface and can be as long as several kilometers, but the way they are formed is similar to the one taking place underground. Therefore, the method of the threat area determination proposed by the physicists headed by professor Kuksenko is also applicable to forecasting major calamities.
Tatiana Pitchugina | alfa
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08.12.2017 | Schwedischer Forschungsrat - The Swedish Research Council
Study reveals significant role of dust in mountain ecosystems
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The miniaturization of the current technology of storage media is hindered by fundamental limits of quantum mechanics. A new approach consists in using so-called spin-crossover molecules as the smallest possible storage unit. Similar to normal hard drives, these special molecules can save information via their magnetic state. A research team from Kiel University has now managed to successfully place a new class of spin-crossover molecules onto a surface and to improve the molecule’s storage capacity. The storage density of conventional hard drives could therefore theoretically be increased by more than one hundred fold. The study has been published in the scientific journal Nano Letters.
Over the past few years, the building blocks of storage media have gotten ever smaller. But further miniaturization of the current technology is hindered by...
With innovative experiments, researchers at the Helmholtz-Zentrums Geesthacht and the Technical University Hamburg unravel why tiny metallic structures are extremely strong
Light-weight and simultaneously strong – porous metallic nanomaterials promise interesting applications as, for instance, for future aeroplanes with enhanced...
An interdisciplinary group of researchers interfaced individual bacteria with a computer to build a hybrid bio-digital circuit - Study published in Nature Communications
Scientists at the Institute of Science and Technology Austria (IST Austria) have managed to control the behavior of individual bacteria by connecting them to a...
Physicists in the Laboratory for Attosecond Physics (run jointly by LMU Munich and the Max Planck Institute for Quantum Optics) have developed an attosecond electron microscope that allows them to visualize the dispersion of light in time and space, and observe the motions of electrons in atoms.
The most basic of all physical interactions in nature is that between light and matter. This interaction takes place in attosecond times (i.e. billionths of a...
Transistors based on carbon nanostructures: what sounds like a futuristic dream could be reality in just a few years' time. An international research team working with Empa has now succeeded in producing nanotransistors from graphene ribbons that are only a few atoms wide, as reported in the current issue of the trade journal "Nature Communications."
Graphene ribbons that are only a few atoms wide, so-called graphene nanoribbons, have special electrical properties that make them promising candidates for the...
08.12.2017 | Event News
07.12.2017 | Event News
05.12.2017 | Event News
08.12.2017 | Life Sciences
08.12.2017 | Information Technology
08.12.2017 | Information Technology