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Optimization of Down-the-Hole Hammer Using Experimental Design Method

실험설계법을 이용한 다운더홀(DTH) 해머의 최적화

Hwang, Un Kyoo;Lim, Jong Hyuk
황운규;임종혁

  • Received : 2016.01.15
  • Accepted : 2016.04.14
  • Published : 2016.06.01

Abstract

Research and development of mineral-resource-related products has progressed with the increased need to develop mineral resources. The DTH hammer is a resultant product. However, owing to particular work conditions of underground drilling, it is difficult to obtain direct data on the DTH hammer. A DTH drill rig requires a significant amount of money and time for actual testing. This thesis aimed to resolve this problem by using CAE. In a previous paper, the structure of the DTH hammer and its movement were analyzed, and a standard model based on simulation was proposed. Then, experimentation and comparison verification were conducted. In this paper, by using an experimental design method, we derived a control factor of the impact force and efficiency of the DTH hammer and attempted to optimize the design. As a result, the impact energy increased by 14.9%, and the efficiency increased by 3.3%.

Keywords

Down-the-Hole Hammer;Optimization;Pneumatic Hammer;Rock Drill

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