›› 2013, Vol. 34 ›› Issue (4): 1179-1184.

• Numerical Analysis • Previous Articles     Next Articles

Numerical analysis of rock cutting based on fracture mechanics

JIANG Hong-xiang, DU Chang-long, LIU Song-yong, LIU Zeng-hui   

  1. School of Mechanical and Electrical Engineering, China University of Mining and Technology, Xuzhou, Jiangsu 221116, China
  • Received:2012-09-19 Online:2013-04-10 Published:2013-04-16

PDF (Chinese)

1818

Abstract: In order to study the mechanical characteristics of the cutter in rock cutting process and the prediction of mean peak force reaction on the cutter, a numerical model of rock cutting is established based on the fracture mechanics and finite element theory. The process of the rock reaction on the cutter is simulated and investigated; and the reaction forces on the cutter are obtained with different rock mechanical characteristics and impacting conditions of the cutter. The results show that the impacting velocity within a certain range has less effect on the peck cutting force, the variation of reaction force is unanimous to rock volume changes with stepwise decreasing. The relationship of mean peak force reaction on the cutter obtained from simulations, experiments and theoretical models is investigated with the linear regression analysis. The results show good correlations that the linear correlation coefficients between numerical results and the results of experiments and Goktan’s theory are 0.812, 0.930 respectively; and it is indicated that this numerical model is proper and feasible to simulate the rock cutting process.

Key words: rock cutting, numerical method, cutter, acting force, linear regression analysis

CLC Number: 

  • TD 42
[1] WEN Sen, ZHOU Shu-yu, SHENG Gui-lin, . Experiments on the efficiency of rock fragmentation by rotary cutting in composite rock strata [J]. Rock and Soil Mechanics, 2019, 40(7): 2628-2636.
[2] LI Jing, CHEN Yu-min, FANG Zhi, GAO Han, TOBITA Tetsuo, ZHOU Ge, . Liquefaction characteristics analysis on gently tilting desaturated sandy ground [J]. Rock and Soil Mechanics, 2019, 40(11): 4352-4360.
[3] FANG Zhi, CHEN Yu-min, HE Sen-kai, . A modified method for mechanical-hydraulic coupled simulation based on a single-phase fluid for desaturated sand soil [J]. , 2018, 39(5): 1851-1857.
[4] LI Chang-jun, CHEN Wei-zhong, YANG Jian-ping, LIU Jin-quan, . Variation of segment joint opening of underwater shield tunnel in operation period [J]. , 2018, 39(10): 3783-3793.
[5] LIU Jing-shuo, CAO Ping, FAN Jin-xing, ZHANG Chun-yang, WANG Wen-ping, LIU Bin，. A study on rock breaking characteristics and efficiency with TBM cutters in a biaxial state [J]. , 2017, 38(6): 1541-1549.
[6] TANG Xiao-song, ZHENG Ying-ren, WANG Yong-fu, Feng Yu-shi，. Study on the reasonable size of geo-grid meshes [J]. , 2017, 38(6): 1583-1588.
[7] JI Pei-Qi, ZHANG Xiao-Ping, ZHANG Qi,. Partide flow code analysis of effect of ductility-brittleness change on TBM cutters rock fragmentation process and its failure mode [J]. , 2016, 37(S2): 724-734.
[8] LIU Quan-sheng ，PAN Yu-cong，KONG Xiao-xuan，LIU Jian-ping，. Experimental investigation on mudstone fragmentation characteristics in indentation process by TBM disc cutter [J]. , 2016, 37(S1): 166-174.
[9] ZHANG Qian-qian, HAN Zhen-nan, ZHANG Meng-qi, ZHANG Jian-guang，. Experimental study of breakage mechanisms of rock induced by a pick and associated cutter spacing optimization [J]. , 2016, 37(8): 2172-2179.
[10] XU Guo-sheng，LI De-hai，HOU De-feng，ZHANG Yan-bin. Measurement and prediction of the transientsurface movement and deformation induced by mining under thick alluvium [J]. , 2016, 37(7): 2056-2062.
[11] ZOU Fei，LONG Wan-xue，LI Liang,. Theoretical analysis and numerical simulation of rock damage and failure under wedge cutting [J]. , 2016, 37(7): 2101-2108.
[12] TAN Qing , YI Nian-en , XIA Yi-min , ZHU Yi , ZHANG Xu-hui , LING Nai-kuang , . Study of calculation equation of TBM disc cutter optimal spacing [J]. , 2016, 37(3): 883-892.
[13] JIANG Zhong-ming , LONG Fang , XIONG Xiao-hu , FENG Shu-rong , ZHONG Hui-ya ,. Study of calculation methods of acting force of seepage in slope stability analysis [J]. , 2015, 36(9): 2478-2486.
[14] LENG Dong-mei，CAI Zong-xi，WANG Yan-qun，HOU Zhen-de . Effects of offset center tool of shield on thrust and torque on cutterhead [J]. , 2015, 36(6): 1776-1783.
[15] FENG Chun，LI Shi-hai，LIU Xiao-yu. A procedure for transiting FEM into DEM and its application [J]. , 2015, 36(4): 1027-1034.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] WANG Gang, LI Shu-cai, WANG Ming-bin. Study of stability of anchoring jointed rockmass under seepage pressure[J]. , 2009, 30(9): 2843 -2849 .
[2] LIU Yu-cheng，CAO Shu-gang，LIU Yan-bao. Discussion on some time functions for describing dynamic course of surface subsidence due to mining[J]. , 2010, 31(3): 925 -931 .
[3] LIU En-long. Breakage mechanics for geomaterials: Breakage mechanism of structural blocks and binary-medium model[J]. , 2010, 31(S1): 13 -22 .
[4] JIE Yu-xin, YANG Guang-hua. Modification of elastoplastic models based on generalized potential theory[J]. , 2010, 31(S2): 38 -42 .
[5] YANG Jian-min, ZHENG Gang. Classification of seepage failures and opinion to formula for check bursting instability in dewatering[J]. , 2009, 30(1): 261 -264 .
[6] ZHOU Hua，WANG Guo-jin1,，FU Shao-jun，ZOU Li-chun，CHEN Sheng-hong. Finite element analysis of foundation unloading and relaxation effects of Xiaowan Arch Dam[J]. , 2009, 30(4): 1175 -1180 .
[7] YE Fei, ZHU He-hua, HE Chuan. Back-filled grouts diffusion model and its pressure to segments of shield tunnel[J]. , 2009, 30(5): 1307 -1312 .
[8] CHEN Lin, ZHANG Yong-xing, RAN Ke-xin. A method for calculating active earth pressure considering shear stress[J]. , 2009, 30(S2): 219 -223 .
[9] LUO Qiang , WANG Zhong-tao , LUAN Mao-tian , YANG Yun-ming , CHEN Pei-zhen. Factors analysis of non-coaxial constitutive model’s application to numerical analysis of foundation bearing capacity[J]. , 2011, 32(S1): 732 -0737 .
[10] WANG Yun-Gang ，ZHANG Guang ，HU Qi. Study of force characteristics of battered pile foundation[J]. , 2011, 32(7): 2184 -2190 .
Copyright © Rock and Soil Mechanics, All Rights Reserved.
Tel: 027-87198484, 87199252, 87199253, 87198752　E-mail: ytlx@whrsm.ac.cn
Powered by Beijing Magtech Co. Ltd