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あぁかがさざただなはばぱまやゃらわゎんいぃきぎしじちぢにひびぴみりうぅくぐすずつづっぬふぶぷむゆゅるえぇけげせぜてでねへべぺめれおぉこごそぞとどのほぼぽもよょろを

アァカサザタダナハバパマヤャラワヮンイィキギシジチヂニヒビピミリウゥクグスズツヅッヌフブプムユュルエェケゲセゼテデヘベペメレオォコゴソゾトドノホボポモヨョロヲ ―

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1
Mechanism of rock breaking by pick assisted with water jet of different modes

Xiaohui Liu,Songyong Liu,Huifu Ji 대한기계학회 2015 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.29 No.12
In the rock breaking progress, the resistant force results in tools failure and the low cutting efficiency, thus, it is necessary to reduce thefailure of tools and enhance the efficiency of cutting and drilling. In this paper, different configuration modes of water jet were presentedto solve this issue. Moreover, the symmetrical pre-split finite element models for rock breaking by pick without water jet and picks assistedwith different configuration modes of water jet were established to analyze the effect of different configuration modes on rockstress distribution and pick cutting forces. Finally, the experiments were conducted to validate the theory analysis. The results indicatethat the cutting force decreasing rate of JCP is maximum all the time under the same conditions compared with the decreasing rate of JSPand JFP; and the numerical results were consistent with the numerical, which verifies the correctness of theory analysis.