岩爆弹射破坏过程的试验研究

doi:10.13722/j.cnki.jrme.2015.0810

Abstract
Figure/Table
References (0)
Related Citation (15)

Download: PDF (1601 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract Experimental study on the ejection process of strain rockburst in coarse-grain granite using the rigid true-triaxial test machine for rockburst developed in house was presented. The processes of ejecting failure in focused energy driven rockburst and in concentrated stress driven rockburst were respectively simulated with different loading and unloading paths. The speed of rock fragments was recorded with the high speed camera system and the characteristics of rockburst were analyzed. Rockburst was found to have four typical stages such as small grain ejections，spalling，shearing rock into fragments and fragments ejection. The failure of the specimen after rockburst had a V-shaped notch or sidestep-shaped notch near the free face and a shear zone away from the free face. Loading rate had important influence on the concentrated stress driven rockburst. The kinetic energy had an increasing trend with the increasing of loading rate ranging from 0.05 MPa/s to 2 MPa/s. Gathering enough elastic strain energy and inputting energy with enough high rate in the pre-peak are essential conditions for stress concentration driven rockbust. Whether it is the focused energy driven rockburst or the concentrated stress driven rockburst，less than 1% of released elastic strain energy in the pre-peak was translated into the kinetic energy.

Key words： rock mechanics rockburst ejection failure true-triaxial test

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	SU Guoshao1
	2
	JIANG Jianqing1
	2
	FENG Xiating3
	MO Chun1
	2
	JIANG Quan3

Cite this article:

SU Guoshao1,2,JIANG Jianqing1, et al. Experimental study of ejection process in rockburst[J]. , 2016, 35(10): 1990-1999.

URL:

https://rockmech.whrsm.ac.cn/EN/10.13722/j.cnki.jrme.2015.0810 OR https://rockmech.whrsm.ac.cn/EN/Y2016/V35/I10/1990

[1] 钱七虎. 地下工程建设安全面临的挑战与对策[J]. 岩石力学与工程学报，2012，31(10)：1 945–1 956.(QIAN Qihu. Challenges faced by underground projects construction safety and countermeasures[J]. Chinese Journal of Rock Mechanics and Engineering，2012，31(10)：1 945–1 956.(in Chinese))
[2] 冯夏庭，陈炳瑞，张传庆，等. 岩爆孕育过程的机制、预警与动态调控[M]. 北京：科学出版社，2013：15–32.(FENG Xiating，CHEN Bingrui，ZHANG Chuanqing，et al. Mechanism，warning and dynamic control of rockburst development process[M]. Beijing：Science Press，2013：15–32.(in Chinese))
[3] 谢和平. 岩爆的分形特征和机理[J]. 岩石力学与工程学报，1993，12(1)：28–37.(XIE Heping. Fractal character and mechanism of rockbursts[J]. Chinese Journal of Rock Mechanics and Engineering，1993，12(1)：28–37.(in Chinese))
[4] 谭以安. 岩爆形成机理研究[J]. 水文地质工程地质，1989，16(1)：34–38.(TAN Yi?an. The mechanism research of rockburst[J]. Hydrogeology and Engineering Geology，1989，16(1)：34–38.(in Chinese))
[5] 顾金才，范俊奇，孔福利，等. 抛掷型岩爆机制与模拟试验技术[J]. 岩石力学与工程学报，2014，33(6)：1 081–1 089.(GU Jincai，FAN Junqi，KONG Fuli，et al. Mechanism of ejective rockburst and model testing technology[J]. Chinese Journal of Rock Mechanics and Engineering，2014，33(6)：1 081–1 089.(in Chinese))
[6] 徐林生. 卸荷状态下岩爆岩石力学试验[J]. 重庆交通学院学报，2003，22(1)：1–4.(XU Linsheng. Research on the experimental rock mechanics of rockburst under unloading condition[J]. Journal of Chongqing Jiaotong University，2003，22(1)：1–4.(in Chinese))
[7] 徐松林，吴文，张华. 大理岩三轴压缩动态卸围压与岩爆模拟分析[J]. 辽宁工程技术大学学报，2002，21(5)：612–615.(XU Songlin，WU Wen，ZHANG Hua. Experimental study on dynamic unloading of the confining pressures for marble under triaxial compression and simulation analyses of rock burst[J]. Journal of Liaoning Technical University，2002，21(5)：612–615.(in Chinese))
[8] 陈卫忠，吕森鹏，郭小红，等. 基于能量原理的卸围压试验与岩爆判据研究[J]. 岩石力学与工程学报，2009，28(8)：1 530–1 540. (CHEN Weizhong，LU Senpeng，GUO Xiaohong，et al. Research on unloading confining pressure tests and rockburst criterion based on energy theory[J]. Chinese Journal of Rock Mechanics and Engineering，2009，28(8)：1 530–1 540.(in Chinese))
[9] 张晓君. 深部巷(隧)道围岩的劈裂岩爆试验研究[J]. 采矿与安全工程学报，2011，28(1)：66–71.(ZHANG Xiaojun. Experimental research on splitting rock burst of surrounding rocks in deep roadways (tunnels)[J]. Journal of Mining and Safety Engineering，2011，28(1)：66–71.(in Chinese))
[10] 夏元友，吝曼卿，廖璐璐，等. 大尺寸试件岩爆试验碎屑分形特征分析[J]. 岩石力学与工程学报，2014，33(7)：1 358–1 365.(XIA Yuanyou，LIN Manqing，LIAO Lulu，et al. Fractal characteristic analysis of fragments from rockburst tests of large-diameter specimens[J]. Chinese Journal of Rock Mechanics and Engineering，2014，33(7)： 1 358–1 365.(in Chinese))
[11] 何满潮，苗金丽，李德建，等. 深部花岗岩试样岩爆过程实验研究[J]. 岩石力学与工程学报，2007，26(5)：865–876.(HE Manchao，MIAO Jinli，LI Dejian，et al. Experimental study on rockburst processes of granite specimen at great depth[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(5)：865–876.(in Chinese))
[12] HE M C，JIA X N，COLI M，et al. Experimental study of rockbursts in underground quarrying of Carrara marble[J]. International Journal of Rock Mechanics and Mining Sciences，2012，52(6)：1–8.
[13] 马艾阳，伍法权，沙鹏，等. 锦屏大理岩真三轴岩爆试验的渐进破坏过程研究[J]. 岩土力学，2014，35(10)：2 868–2 874.(MA Aiyang，WU Faquan，SHA Peng，et al. Progressive failure of Jinping marble in true triaxial rockburst test[J]. Rock and Soil Mechanics，2014，35(10)：2 868–2 874.(in Chinese))
[14] 李天斌，王湘锋，孟陆波. 岩爆的相似材料物理模拟研究[J]. 岩石力学与工程学报，2011，30(增1)：2 610–2 616.(LI Tianbin，WANG Xiangfeng，MENG Lubo. Physical simulation study of similar material for rockburst[J]. Chinese Journal of Rock Mechanics and Engineering，2011，30(Supp.1)：2 610–2 616.(in Chinese))
[15] 陈陆望，白世伟. 坚硬脆性岩体中圆形洞室岩爆破坏的平面应变模型试验研究[J]. 岩石力学与工程学报，2007，26(12)：2 504–2 509. (CHEN Luwang，BAI Shiwei. Research on plane strain model test of rockburst of circular cavern in hard brittle rockmass[J]. Chinese Journal of Rock Mechanics and Engineering，2007，26(12)：2 504–2 509.(in Chinese))
[16] HUANG D，LI Y R. Conversion of strain energy in triaxial unloading tests on marble[J]. International Journal of Rock Mechanics and Mining Sciences，2014，66(1)：160–168.