পদ্ধতির তুলনা করুন
নির্বাচিত পদ্ধতিগুলো পাশাপাশি পর্যালোচনা করুন; যে সারিগুলোয় পার্থক্য আছে সেগুলো চিহ্নিত করা হয়।
| খনি বায়ুচলাচল× | হোক-ব্রাউন ফেলিওর ক্রাইটেরিয়ন× | |
|---|---|---|
| ক্ষেত্র | খনি প্রকৌশল | খনি প্রকৌশল |
| পরিবার | Process / pipeline | Process / pipeline |
| উদ্ভবের বছর≠ | 1880 | 1980 |
| প্রবর্তক≠ | Mining Engineering Practice | Evert Hoek and E. T. Brown |
| ধরন≠ | System design for safe air quality and worker cooling in underground mines | Empirical criterion for rock mass strength prediction |
| মৌলিক উৎস≠ | Hartman, H. L., Mutmansky, J. M., Ramani, R. V., & Wang, Y. J. (2012). Mine ventilation and ambient air quality. Society for Mining, Metallurgy & Exploration, Inc. link ↗ | Hoek, E., & Brown, E. T. (2002). The Hoek-Brown failure criterion and GSI: 2018 update. Journal of Rock Mechanics and Geotechnical Engineering, 10(2), 445-463. link ↗ |
| অপর নাম≠ | Underground Mine Ventilation, Air Flow Design, Mine Haulage Ventilation | Generalized Hoek-Brown Criterion, HB Criterion |
| সম্পর্কিত | 3 | 3 |
| সারসংক্ষেপ≠ | Mine ventilation is the design and operation of systems that deliver fresh air to underground mining areas and remove contaminated air, heat, and hazardous gases. It is critical for worker safety and productivity, maintaining breathable air (sufficient oxygen, low dust and gas concentrations) and acceptable temperatures. Proper ventilation design requires calculating heat loads from mining operations, determining required air volumes, and designing shaft/drift geometry to deliver adequate flow. | The Hoek-Brown Criterion, developed by Evert Hoek and E. T. Brown starting in 1980, is an empirical failure criterion that predicts the shear strength of rock masses as a function of confining pressure. It accounts for rock quality (via the Geological Strength Index, GSI) and thus bridges laboratory rock mechanics and field behavior. The criterion is widely used in mining for slope stability, pillar design, and stress analysis. |
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