›› 2011, Vol. 32 ›› Issue (12): 3812-3820.

• Numerical Analysis • Previous Articles     Next Articles

Numerical simulation of presplit blasting influenced by geometrical characteristics of joints

XIE Bing1, 2, LI Hai-bo1, WANG Chang-bai1, 3, LIU Ya-qun1, XIA Xiang1, MA Guo-wei4   

  1. 1. State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China; 2. Department of Civil Engineering, Luoyang Institute of Science and Technolegy, Luoyang, Henan 471003, China; 3. School of Civil Engineering and Architecture, Anhui University of Science and Technology, Huainan, Anhui 232001, China; 4. School of Civil & Environmental Eengineering, Nanyang Technological University, 639798 Singapore
  • Received:2010-06-01 Online:2011-12-10 Published:2011-12-13

PDF (Chinese)

1642

Abstract: The result of presplit blasting influenced by geometrical characteristics of joints are combining studied by the software AUTODYN 2D and UDEC. By calculating, the impact of geometrical characteristics of joints can be found through the crack extension between the blasting hole. The straight level of the cracks between the blasting hole are gradually enhanced with the increasing of angle between the joints and the borehole connection; and the angle of 90-degree can get the best result that the crack will be coincided with the borehole connection; and it is also in accord with the theoretical analysis. Joints space has significant impact on the presplit blasting; and the smaller joint space the rock has the more difficult the cracks connected. Reducing the space of boreholes is conducive to form the linked up cracks.

Key words: discrete element method, blasting load, jointed rock mass, presplit blasting, crack

CLC Number: 

  • TD 235
[1] WANG Pei-tao, HUANG Zheng-jun, REN Fen-hua, ZHANG Liang, CAI Mei-feng, . Research on direct shear behaviour and fracture patterns of 3D-printed complex jointed rock models [J]. Rock and Soil Mechanics, 2020, 41(1): 46-56.
[2] ZHANG Zhi-tao, WANG Hai-jun, TANG Lei, ZHAO Chu, LI Han-zhang, SU zheng-yang, . Study of fracture characteristics of semi-circular bending with internal crack based on 3D-ILC [J]. Rock and Soil Mechanics, 2020, 41(1): 111-122.
[3] KUANG Du-min, LONG Zhi-lin, ZHOU Yi-chun, YAN Chao-ping, CHEN Jia-min, . Prediction of rate-dependent behaviors of cemented geo-materials based on BP neural network [J]. Rock and Soil Mechanics, 2019, 40(S1): 390-399.
[4] ZHOU Meng-jia, WEN Yan-feng, DENG Gang, WANG Yun-jia, SONG Er-xiang, . Three-dimensional discrete element simulation of random breaking strength and size effect in single particle splitting test of rockfill [J]. Rock and Soil Mechanics, 2019, 40(S1): 503-510.
[5] JIANG An-nan, ZHANG Quan, WU Hong-tao, DUAN Long-mei, JIAO Ming-wei, BAI Tao, . Stability analysis of slope affected by blasting based on improved local safety method [J]. Rock and Soil Mechanics, 2019, 40(S1): 511-518.
[6] ZHANG Guo-kai, LI Hai-bo, WANG Ming-yang, LI Xiao-feng, . Crack propagation characteristics in rocks containing single fissure based on acoustic testing and camera technique [J]. Rock and Soil Mechanics, 2019, 40(S1): 63-72.
[7] ZHAO Guo-yan, LI Zhen-yang, WU Hao, WANG En-jie, LIU Lei-lei. Dynamic failure characteristics of sandstone with non-penetrating cracks [J]. Rock and Soil Mechanics, 2019, 40(S1): 73-81.
[8] DU Chang-cheng, ZHU Yan-bo, MIAO Shuai-sheng, GAO Ming-ming, ZHU Jun-hua, ZHAO Fa-suo. The evolution of cracks in the dewatering shrinkage process of hipparion red soil [J]. Rock and Soil Mechanics, 2019, 40(8): 3019-3027.
[9] WANG Rui, YAN Shuai, BAI Jian-biao, CHANG Zhi-guo, SONG Yuan-ba, . Theoretical analysis of the destabilization mechanism and the damaged width of rib pillar in open-pit highwall mining [J]. Rock and Soil Mechanics, 2019, 40(8): 3167-3180.
[10] ZHANG Chuan-qing, LIU Zhen-jiang, ZHANG Chun-sheng, ZHOU Hui, GAO Yang, HOU Jing, . Experimental study on rupture evolution and failure characteristics of aphanitic basalt [J]. Rock and Soil Mechanics, 2019, 40(7): 2487-2496.
[11] ZHANG Yu-bin, HUANG Dan. State-based peridynamic study on the hydraulic fracture of shale [J]. Rock and Soil Mechanics, 2019, 40(7): 2873-2881.
[12] WANG Hai-jun, YU Shu-yang, REN Ran, TANG Lei, LI Xin-yun, JIA Yu, . Study on failure of brittle solids with circular hole and internal crack based on 3D-ILC [J]. Rock and Soil Mechanics, 2019, 40(6): 2200-2212.
[13] JIANG Li-Chun, LUO En-Min, SHEN Bin-Bin, . A dynamic response of blasting to stereoscopic goaf group based on the multi-degree of freedom model method [J]. Rock and Soil Mechanics, 2019, 40(6): 2407-2415.
[14] WANG Yun-jia, SONG Er-xiang. Discrete element analysis of the particle shape effect on packing density and strength of rockfills [J]. Rock and Soil Mechanics, 2019, 40(6): 2416-2426.
[15] ZHANG Sheng, WANG Long-fei, CHANG Xu, WANG Dong-kun, WANG Xiao-liang, QIAO Yang, . Experimental study of size effect of fracture toughness of limestone using the notched semi-circular bend samples [J]. Rock and Soil Mechanics, 2019, 40(5): 1740-1749.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
[1] MI Hai-zhen, GAO Chun. Experimental study of expansive behaviors of quicklime[J]. , 2010, 31(4): 1253 -1256 .
[2] SUN Xi-ping, ZHANG Bao-hua, ZHANG Qiang, WANG Xiao-nan. Stability analysis of gravity quay when rubble bedding was eroded by water flow[J]. , 2010, 31(10): 3184 -3190 .
[3] CHEN Jing-yu , GONG Xiao-nan, DENG Ya-hong. Research on dissipation of excess pore water pressure in one-dimensional finite strain consolidation of soft clays[J]. , 2009, 30(1): 191 -195 .
[4] ZHANG Chun-hui, ZHAO Quan-sheng. Early warning system of mining subsidence damage based on ARCGIS[J]. , 2009, 30(7): 2197 -2202 .
[5] SUN Jian , WANG Lian-guo , TANG Fu-rong , SHEN Yi-feng , GONG Shi-long. Microseismic monitoring failure characteristics of inclined coal seam floor[J]. , 2011, 32(5): 1589 -1595 .
[6] YANG Yong-xiang , ZHOU Jian , JIA Min-cai , HU Jin-hu. Visualization testing on liquefaction properties of saturated sands[J]. , 2011, 32(6): 1643 -1648 .
[7] XU Zheng-ming, XUE Qiang, ZHAO Ying. Research on time effect of modified sludge composites by triaxial tests on mechanical properties[J]. , 2011, 32(6): 1713 -1718 .
[8] CHEN Ming , HU Ying-guo , LU Wen-bo , YAN Peng , ZHOU Chuang-bing. Blasting excavation induced damage characteristics of diversion tunnel for Jinping cascade II hydropower station[J]. , 2011, 32(S2): 172 -177 .
[9] WANG Tao , LI Yang , ZHOU Yong , Lü Qing , LIU Da-wei. Research on safety specific report of phosphogypsum tailings ponds[J]. , 2011, 32(S2): 407 -412 .
[10] QIAO Chun-jiang , CHEN Wei-zhong , WANG Hui , TIAN Hong-ming , TAN Xian-jun. Study of construction method of tunnel in shallow broken rock mass[J]. , 2011, 32(S2): 455 -462 .
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