›› 2011, Vol. 32 ›› Issue (S1): 669-0673.

• Numerical Analysis • Previous Articles     Next Articles

Theoretical analysis and numerical simulation of effect of unloading hole under explosive loading

CUI Chua-an, SUN Yun-hou, LI Yong-tao, LI Da-peng. WANG Zi-jia   

  1. Engineering Institute of Engineer Corps, PLA University of Science and Technology, Nanjing 210007, China
  • Received:2010-11-01 Online:2011-05-15 Published:2011-05-16

PDF (Chinese)

5018

Abstract: The sap engineerings have important function in war; at the same time,it is ease to be struck by cannonballs. In order to increase the protection capability of the sap engineerings, the basic theories and energy dissipation of wave are used for analytical research on rock deformation, energy dissipation during the process of rock friction and the propagation characteristics of explosive stress wave which passes through the interface between rock and air. Based on six conditions of normal working environment ,the numerical simulation results for the inspection nodes are simulated by finite element analysis software ANSYS—LS-DYNA . Comparisons with the theoretical analysis show that the unloading hole plays its role of reducing explosive loading. So that a new way for the protection design of sap engineerings is offered.

Key words: explosive loading, stress wave, unloading hole

CLC Number: 

  • TU 452
[1] WEI Jiu-qi, LÜ Ya-ru, LIU Guo-quan, ZHANG Lei, LI Lei , . One-dimensional impact responses and energy absorption of calcareous sand [J]. Rock and Soil Mechanics, 2019, 40(1): 191-198.
[2] WANG Fei-li, WANG Shu-hong, XIU Zhan-guo. Method on stress quantification and strength characterization of rock structural plane under the disturbance of stress wave [J]. , 2018, 39(8): 2844-2850.
[3] PANG Long-long , XU Xue-feng , SI Liang , ZHANG Hao , LI Zheng-ke , . Analysis of prevention mechanism of upper protective seam mining on rock rockburst induced by thick conglomerate [J]. , 2016, 37(S2): 120-128.
[4] CHEN Jun-hua , ZHANG Jia-sheng , LI Xin-ping,. Study of presplitting blasting parameters and its application based on rock blasting-induced damage theory [J]. , 2016, 37(5): 1441-1450.
[5] LIU Ye, JING Fu-xing, FENG Yu. Study of occurrence mechanism and risk analysis of induced rockburst in roadway [J]. , 2015, 36(S2): 201-207.
[6] LI Feng, ZHANG Ya-guang, LIU Jian-rong, LIU Dan-long. Dynamic response characteristics of tectonic coal under dynamic loading [J]. , 2015, 36(9): 2523-2531.
[7] QU Shi-jie ，LIU Ji-fei，. Numerical analysis of joint angle effect on cracking with presplit blasting [J]. , 2015, 36(1): 189-194.
[8] ZHANG Le , LU Wen-bo , ZHOU Jun-ru , HU Ying-guo , CHEN Ming , YAN Peng , . Dynamic response and local failure mechanism of division pier under blasting impact load [J]. , 2014, 35(S2): 520-527.
[9] BAI Yu，ZHU Wan-cheng，WEI Chen-Hui，WEI Jiong. Numerical simulation on two-hole blasting under different in-situ stress conditions [J]. , 2013, 34(S1): 466-471.
[10] ZHOU Ji-jun , SHAN Ren-liang , JIA Zhi-xin , GENG Hui-hui , ZHAO Yu-fei LIU Li-peng . Study of vibration characteristics of rockbolt and shotcrete structures near the explosion source under blasting load [J]. , 2013, 34(8): 2225-2230.
[11] YANG Feng-wei ，LI Hai-bo ，LI Jian-chun ，HAO Ya-fei ，WANG Miao . Numerical simulation of transmission characteristics of oblique incidence of stress waves across linear elastic joints [J]. , 2013, 34(3): 901-907.
[12] JIN Xu-hao , LU Wen-bo , TIAN Yong , YAN Peng , CHEN Ming. Analysis of mechanisms of S wave generated in rock blasting process [J]. , 2011, 32(S2): 228-232.
[13] SHAN Ren-liang, ZHOU Ji-jun, XIA Yu, KONG Xiang-song, CHANG Li-fu, XU Cheng. Axial stress distribution of grouted rockbolts subjected to blast loading [J]. , 2011, 32(10): 2965-2971.
[14] LI Qing , ZHANG Xi , LI Sheng-yuan , XIE Jian-wen , MENG Ning-ning. Experimental study of dynamic fracture behaviors of branched cracks under blasting stress wave [J]. , 2011, 32(10): 3026-3032.
[15] YUAN Lin XU Tao ZHAO Gao-feng YANG Yue-feng CHEN Geng. Study of mode II crack propagation of quasi-brittle material under impact loading [J]. , 2011, 32(10): 3155-3162.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] WEI Li，CHAI Shou-xi，CAI Hong-zhou，WANG Xiao-yan，LI Min3，SHI Qian. Research on tensility of wheat straw for reinforced material[J]. , 2010, 31(1): 128 -132 .
[2] HUANG Qing-xiang, ZHANG Pei, DONG Ai-ju. Mathematical model of “arch beam” of thick sandy soil layer movement in shallow seam[J]. , 2009, 30(9): 2722 -2726 .
[3] JING Zhi-dong, LIU Jun-xin. Experimental research on dynamic deformations of semi-rigid structures of subgrade bed-mudstone of red beds[J]. , 2010, 31(7): 2116 -2121 .
[4] LIU Zheng-hong，LIAO Yan-hong，ZHANG Yu-shou. Preliminary study of physico-mechanical properties of Luanda sand[J]. , 2010, 31(S1): 121 -126 .
[5] LEI Jin-bo，CHEN Cong-xin. Research on load transfer mechanism of composite foundation of rigid pile with cap based on hyperbolic model[J]. , 2010, 31(11): 3385 -3391 .
[6] WANG Deng-ke，LIU Jian，YIN Guang-zhi，WEI Li-de. Research on influencing factors of permeability change for outburst-prone coal[J]. , 2010, 31(11): 3469 -3474 .
[7] FAN Heng-hui, GAO Jian-en, WU Pu-te, LUO Zong-ke. Physicochemical actions of stabilized soil with cement-based soil stabilizer[J]. , 2010, 31(12): 3741 -3745 .
[8] ZHANG Cheng-ping，ZHANG Ding-li，LUO Jian-jun，WANG Meng-shu，WU Jie-pu. Remote monitoring system applied to the construction of metro station undercrossing existing metro tunnel[J]. , 2009, 30(6): 1861 -1866 .
[9] WANG Jun, CAO Ping, LI Jiang-teng, LIU Ye-ke. Analysis of stability of tunnel-slope with rheological medium under rainfall infiltration[J]. , 2009, 30(7): 2158 -2162 .
[10] ZHANG Yuan, WAN Zhi-jun, KANG Jian-rong, ZHAO Yang-sheng. Analysis of stage characteristics of sandstone permeability under conditions of temperature and triaxial stress[J]. , 2011, 32(3): 677 -683 .
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