Experimental simulation study of dynamic friction characteristics of interface between diamond drill and rock under impact-rotational loading
LI Jiyang1,2, TAN Zhuoying1, LI Wen2, YUE Pengjun2
1. Key State Laboratory of High-efficient Mining and Safety of Metal Mines ( Ministry of Education ), Beijing 100083, China;
2.Civil and Environmental Engineering School,University of Science and Technology Beijing, Beijing 100083, China
Abstract:In rotary drilling process,study of dynamic friction characteristics between drill bit and concrete samples interface is an important issue of rock crushing mechanism. In order to study the variation of the key parameters of friction, based on self-developed drilling simulation system, the key parameters can be measured accurately and repeatedly by stress wave and axial pressure and friction can be obtained directly, and the relative sliding speed, sliding displacement as well as friction coefficient can be further calculated. The results have shown that the relative sliding speed and sliding displacement between diamond drill and rock interface are highly related rotary loading rate and will increase with the increase of rotational speed. Interfacial dynamic friction coefficient will increase with the rise of impact velocity. In each impact-rotary loading process, the experimental dynamic friction coefficient keeps almost constant and is not affected by the process of axial impact loading-unloading, the duration of stable dynamic friction is nearly equal to the length of stress wave peak, the time gradually shortened with the increase of impact velocity, which revealed the characteristics of dynamic friction between drill bit and rock under impact-rotational loading.
李季阳 1,2,谭卓英*1,李文2,岳鹏君2. 冲击旋转加载下金刚石钻头-岩面动摩擦特性试验模拟研究[J]. 振动与冲击, 2015, 34(22): 210-214.
LI Jiyang1,2, TAN Zhuoying1, LI Wen2, YUE Pengjun2. Experimental simulation study of dynamic friction characteristics of interface between diamond drill and rock under impact-rotational loading. JOURNAL OF VIBRATION AND SHOCK, 2015, 34(22): 210-214.
[1] 郝铁生,梁卫国,张传达.地下水平盐岩储库顶板交界层面滑移破损与强度破坏特性分析[J].岩石力学与工程学报,2014,S2:3956-3966.
HAO Tie-sheng, LIANG We-iguo, ZHANG Chuan-da. Analysis of slippage and fracture characteristic on roof interface of underground horizontal salt cavrns[J]. Chinese Journal of Rock Mechanics and Engineering, 2014, S2: 3956-3966.
[2] 黄平,温诗铸.摩擦学原理[M].北京:清华大学出版社,2002.
HUANG Ping, WEN Shi-zhou. Principles of Tribology[M]. Beijing: Tsinghua University Press, 2002.
[3] 韩文梅.岩石摩擦滑动特性及其影响因素分析[D].太原:太原理工大学,2012.
HAN Wen-mei. The study of frictional sliding characters of rocks and influencing factors[D]. Taiyuan:Taiyuan University of Technology, 2012.
[4] 徐松林,郑文,刘永贵,等.冲击下花岗岩界面动态摩擦特性试验研究[J].高压物理学报,2011,03:207-212.
XU Song-lin, ZHENG Wen, LIU Yong-gui, et al. Experimental investigation on interface dynamic friction of granite under combined pressure and shear impact loading[J]. Chinese Journal Of High Pressure Physics, 2011, 03:207-212
[5]Gerde E, Marder M. Friction and Fracture[J]. Nature, 2001, 413:285-288.
[6]Maeda N, Chen N H, Tirrel M, et al. Adhesion and Friction Mechanisms of Polymer-on-Polymer Surfaces[J]. Science, 2002, 297:379-382.
[7]Toro G D, Goldsky D L, Tullis T E. Friction Falls towards Zero in Quartz Rock as Slip Velocity Approaches Seismic Rates[J]. Nature, 2004, 427:436-439.
[8]Sone H, Shimamoto T, Frictional Resistance of Faults during Accelerating and Decelerating Earthquake Slip[J]. Natural Geosciences, 2009, 2:705-708.
[9]Marone C, Cox S J D. Scaling of rock friction constitutive parameters:The effects of surface roughness and cumulative offset on friction of gabbro[J]. Pure and Applied Geophysics, 1994, 143(1):359-385.
[10] Schneider H. The time dependence of friction of rock joints[J]. Bulletin of Engineering Geology and the Environment. 1977, 16(1):235-239.
[11] ByerleeJ D. Static and kinetic friction of granite at high normal stress [J]. International Journal of Rock Mechanics and Mining Science &Geomechanics Abstracts. 1970, 7(6):577-582.
[12] Espinosa H D, Patanella A, Fischer M. A novel dynamic frictionexperiment using a modified Kolsky bar apparatus[J]. ExperimentalMechanics, 2000, 40(2):138-153.
[13]S. Rajagopalan, V. Prakash. A Modified Torsional Kolsky Bar for Investigating Dynamic Friction[J]. ExperimentalMechanics, 1999, 39(4):295-303.
[14] 林玉亮,卢芳云,崔云霄.冲击加载条件下材料之间摩擦系数的确定[J].摩擦学学报.2007(01) .
LIN Yu-liang, LU Fang-yun, CUI Yun-xiao. Testing of friction coefficients of material loaded by shock wave[J]. Tribology. 2007(01).
[15] 胡时胜,王礼立.一种用于材料高应变率试验的装置[J].振动与冲击,1986,01:40-47.
HU Shi-sheng, WANG Li-li. An apparatus for materials testing at high strain rates[J]. Journal of Vibration and Shock, 1986, 01:40-47.
[16] 卢芳云,陈荣,林玉亮,等.霍普金森杆试验技术[M].北京:科学出版社,2013].
LU Fangyun, CHEN Rong, LIN Yuliang, et al. Hopkinson Bar Techniques [M]. Beijing:Science Press, 2013.
[17] 宫凤强,李夕兵,刘希灵.三轴SHPB加载下砂岩力学特性及破坏模式试验研究[J].振动与冲击,2012,08:29-32.
GONG Feng-qiang, LI Xi-bing, LIU Xi-ling. Tests for sandstone mechnical properties and failure model under triaxial SHPB loading[J]. Journal of Vibration and Shock, 2012, 08:29-32.