| 1 | This drill can bore through rock. | |
| 2 | Based on the drilling practice this paper analyzes and discusses the wearingprinciples on several wearing forms and also the methods to lower the war of bit. | |
| 3 | A method was studied to realize the discrete and random task planning of a drilling robot with two booms. | |
| 4 | In this paper, three stages of blasting development in Hujiayu Copper Mine are summarized and analysed. Drilling and blasting parameters are discussed. | |
| 5 | The forming process of a warm extrusion concave die about the drilling bit shell was simulated numerically with contact analysis modules in ANSYS. |
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