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

被引：27

作者：

Liu, Xiaohui ^{[2
,3
]}

Liu, Songyong ^{[1
,2
,3
]}

Ji, Huifu ^{[2
,3
]}

机构：

[1] China Univ Min & Technol, Sch Mechatron Engn, Xuzhou 221116, Peoples R China

[2] China Univ Min & Technol, Sch Mechatron Engn, Xuzhou 221116, Peoples R China

[3] China Univ Min & Technol, Jiangsu Key Lab Mine Mech & Elect Equipment, Xuzhou 221116, Peoples R China

来源：

JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY | 2015年 / 29卷 / 12期

关键词：

Water jet; Tool failure; Rock breaking; Conical pick; Pre-split; STONE SURFACE-TREATMENT; NUMERICAL-SIMULATION; HARD-ROCK; PERFORMANCE; CUTTER;

D O I：

10.1007/s12206-015-1137-3

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

In the rock breaking progress, the resistant force results in tools failure and the low cutting efficiency, thus, it is necessary to reduce the failure of tools and enhance the efficiency of cutting and drilling. In this paper, different configuration modes of water jet were presented to solve this issue. Moreover, the symmetrical pre-split finite element models for rock breaking by pick without water jet and picks assisted with different configuration modes of water jet were established to analyze the effect of different configuration modes on rock stress distribution and pick cutting forces. Finally, the experiments were conducted to validate the theory analysis. The results indicate that the cutting force decreasing rate of JCP is maximum all the time under the same conditions compared with the decreasing rate of JSP and JFP; and the numerical results were consistent with the numerical, which verifies the correctness of theory analysis.

引用

页码：5359 / 5368

页数：10

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