Electronic Resource
The effect of drilling depth on the penetration rate of percussive blast-hole drills.
| العنوان: | The effect of drilling depth on the penetration rate of percussive blast-hole drills. |
|---|---|
| المؤلفون: | Kahraman S., Mining techniques 2005 Krakow and Krynica, Poland 20-Sep-0523-Sep-05, Yasar E. |
| بيانات النشر: | Krakow Akademia Gorniczo-Hutnicza w Krakowie 2005 |
| نوع الوثيقة: | Electronic Resource |
| مستخلص: | The performance was studied of hydraulic top-hammer and down-the-hole drills in the quarrying of marble. Drill cuttings were collected to determine the coarseness index (the sum of the cumulative weight percentages of a particular size grade of debris sample). Drill performance data and coarseness index values were analysed using the least square regression method. A logarithmic relationship between penetration rate and drilling depth was found for the hydraulic top-hammer drill. Penetration rate decreased with increasing drilling depth. The penetration rate of the down-the-hole drill did not change with increasing drilling depth. An inverse linear relation was observed between coarseness index value and drilling depth for the hydraulic top hammer drill while the coarseness index value of the down-the-hole drill did not change with increasing drilling depth. The performance was studied of hydraulic top-hammer and down-the-hole drills in the quarrying of marble. Drill cuttings were collected to determine the coarseness index (the sum of the cumulative weight percentages of a particular size grade of debris sample). Drill performance data and coarseness index values were analysed using the least square regression method. A logarithmic relationship between penetration rate and drilling depth was found for the hydraulic top-hammer drill. Penetration rate decreased with increasing drilling depth. The penetration rate of the down-the-hole drill did not change with increasing drilling depth. An inverse linear relation was observed between coarseness index value and drilling depth for the hydraulic top hammer drill while the coarseness index value of the down-the-hole drill did not change with increasing drilling depth. |
| مصطلحات الفهرس: | DOWN THE HOLE DRILLS, HYDRAULIC DRILLS, ISSUE054, LEAST SQUARES METHOD, MARBLE, MATHEMATICAL METHODS, MINING, PENETRATION RATE, PERCUSSIVE DRILLS, QUARRYING, text |
| URL: | Feliks J.; Filipowicz A.; (eds)%C%, proceedings of the 4th international conference |
| الاتاحة: | Open access content. Open access content |
| ملاحظة: | und |
| Other Numbers: | UKMMM oai:icon.iom3.org:92353 1309225198 |
| المصدر المساهم: | INSTITUTE OF MATS MINERALS & MINING From OAIster®, provided by the OCLC Cooperative. |
| رقم الانضمام: | edsoai.on1309225198 |
| قاعدة البيانات: | OAIster |
| الوصف غير متاح. |