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Vol. 159, Issue 11, November 2013, pp. 100-106

 

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Research on the Rock Fragmentation Under Static and Dynamic Loads
 
Peng Qing

School of Science, Jiangnan University, Wuxi 214122, China

 

Received: 9 September 2013   /Accepted: 25 October 2013   /Published: 30 November 2013

Digital Sensors and Sensor Sysstems

 

Abstract: According to the fracture characteristics in press-head inserting rocks, the dependence of median, radial and lateral crack length formed in the inserting process on press, hammer and impact velocity is determined, and the effect of impact spacing on rock crushing is analyzed under the cutting under coupling dynamic and static loads mode. Using ANSYS software, simulations on the inserting of static and dynamic loads and the impact-press cutting process are carried out. The results show that: combined load model can greatly improve the effects of rock fragmentation, the ratio of the impact spacing and the cutting depth has significant influence on the special energy consumption, and the optimal ratio is conductive to achieve the best cutting effect; large impact energy and high impact spacing can achieve good cutting effect on brittle hard rocks.

 

Keywords: Static-dynamic coupling loading, Numerical simulation, Rock crushing, Theoretical analysis.

 

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