Principal Components Analysis Based Sticking for Drill Rod

It is a vital threat for coal mining to stick for drill rod during the process of drilling holes toward coal wall underground coal mines, which is prone to lead to mine accidents. To eliminate the above problem, all the factors inducing sticking for drill rod were studied. First, a complete evaluation system was built using analytic hierarchy process to reveal the interaction relationship among the factors inducing sticking for drill rod. Additionally, the characters of all the factors were analyzed and the key influencing factors were obtained using principal component analysis. Furthermore, the mechanical analysis on the drill rod was performed based on the key influencing factors, and the maximum stress region on the drill rod was obtained. Finally, the simulation results show their coincidence with the effectiveness of the key influencing factors, which proves the validity of the analysis approach on sticking for drill rod, thus the sticking for drill rod can be solved efficiently according to the analysis.