| Exploration and determination of the principles of rotary-percussive underground slimhole drilling简 |
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| 作者姓名： | Shadrina Anastasija and Saruev Lev |
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| 摘 要： |
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| 收稿时间： | 10 September 2013 |
Exploration and determination of the principles of rotary-percussive underground slimhole drilling |
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| Shadrina Anastasija and Saruev Lev.Exploration and determination of the principles of rotary-percussive underground slimhole drilling[J].Mining Science and Technology,2014,24(2):245-250. |
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| Affiliation: | 1. School of Information Science and Engineering, Central South University, Changsha 410083, China;2. School of Mechanical and Electrical Engineering, Central South University, Changsha 410083, China;3. The State Key Laboratory of Deep Sea Mineral Resources Development & Utilization Technology, Changsha Research Institute of Mining and Metallurgy, Changsha 410012, China |
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| Abstract: | A possibility of the efficient use of rotary percussive drilling to provide drilling smaller diameter holes (40–70 mm) both in mining and prospecting is disclosed herein. A new construction designed for the nipple thread connection is described. The relative amplitude variation, change of power pulse time and energy in their propagation throughout the drilling tool are determined. A possibility of the efficient power pulse transfer along the drill string to the rock destruction tools with new nipple connections which allow automating the make-up and breakout system of drill pipe was supported by experiments. |
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| Keywords: | Rotary-percussive drilling Smaller diameter holes Drill string Nipple thread connection Power pulse Percussive energy |
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