软弱夹层对爆炸应力波传播过程的影响研究

孙宁新1,雷明锋1,2,张运良1,苏光明3,黄国富4

振动与冲击 ›› 2020, Vol. 39 ›› Issue (16) : 112-119.

PDF(3026 KB)
PDF(3026 KB)
振动与冲击 ›› 2020, Vol. 39 ›› Issue (16) : 112-119.
论文

软弱夹层对爆炸应力波传播过程的影响研究

  • 孙宁新1,雷明锋1,2,张运良1,苏光明3,黄国富4
作者信息 +

A study on the influence of weak interlayer on the propagation process of explosion stress wave

  • SUN Ningxin1,LEI Mingfeng1,2,ZHANG Yunliang1,SU Guangming3,HUANG Guofu4
Author information +
文章历史 +

摘要

针对含软弱夹层岩体爆炸应力波的传播过程,采用数值模拟的方法,探讨了软弱夹层厚度、位置及角度对爆炸应力波传播的影响规律。研究结果表明:爆炸应力波在软弱夹层界面处发生反射,产生的拉伸应力波使应力波能量在迎波面汇聚,加剧该部分岩体的破坏程度。随着软弱夹层厚度的增加,前方岩体拉应力峰值增长作用由近迎波面岩体向炮孔周边岩体传播,拉应力峰值增长率逐渐提高;同时,夹层阻隔作用增强,后方岩体有效应力峰值衰减加快。软弱夹层与起爆中心的间距减小使得夹层前方岩体拉应力峰值显著增长,而对夹层后方岩体的阻隔作用逐渐减弱。应力波能量主要汇聚在软弱夹层的垂直方向,致使岩体爆破产生的裂缝偏离水平测线方向而向软弱夹层法线方向发展。研究成果可用于指导类似地层隧道爆破施工设计。

Abstract

Aiming at the propagation process of explosive stress wave in rock mass with weak interlayer, the influence of thickness, position and angle of weak interlayer on the propagation of explosive stress wave was discussed by numerical simulation.The results show that: the explosive stress wave reflects at the interface of the weak interlayer, and the tensile stress wave makes the energy of the stress wave converge at the upstream, which aggravates the damage degree of this part of rock mass.With the increase of the thickness of weak interlayer, the peak value of tensile stress in front rock mass propagates from near-wave surface to surrounding rock mass, and the peak value of tensile stress increases gradually.Meanwhile, the barrier effect of interlayer increases, and the attenuation of effective stress peak value in back rock mass accelerates.The decrease of the distance between the weak interlayer and the initiation center makes the peak tensile stress of the rock mass in front of the interlayer increase significantly, while the barrier effect on the rock mass behind the interlayer decreases gradually.The energy of stress wave mainly converges in the vertical direction of weak interlayer, which causes the cracks produced by rock blasting to deviate from the horizontal survey line and develop toward the normal direction of weak interlayer.The results can be used to guide the blasting construction design of tunnels in similar strata.

关键词

爆破 / 软弱夹层 / 应力波传播 / 数值模拟 / 影响机理

Key words

blasting / weak interlayer / stress wave propagation / numerical simulation / influence mechanism

引用本文

导出引用
孙宁新1,雷明锋1,2,张运良1,苏光明3,黄国富4. 软弱夹层对爆炸应力波传播过程的影响研究[J]. 振动与冲击, 2020, 39(16): 112-119
SUN Ningxin1,LEI Mingfeng1,2,ZHANG Yunliang1,SU Guangming3,HUANG Guofu4. A study on the influence of weak interlayer on the propagation process of explosion stress wave[J]. Journal of Vibration and Shock, 2020, 39(16): 112-119

参考文献

[1] 李坤, 王卫华, 严哲, 等. 节理形貌对应力波传播影响的试验研究[J]. 世界科技研究与发展, 2016, 38(6): 1137-1141.
LI Kun, WANG Weihua, YAN Zhe, et al. Experimental study about influence of joint topography on propagation of stress wave [J]. World Sci-Tech R&D, 2016, 38(6): 1137-1141.
[2] 魏晨慧, 朱万成, 白羽, 等. 不同地应力条件下含节理岩体爆破的数值模拟[J]. 工程科学学报, 2016, 38(1): 19-25.
WEI Chenhui, ZHU Wancheng, BAI Yu, et al. Numerical simulation of jointed rock mass blasting under different in-situ stress conditions [J]. Chinese Journal of Engineering, 2016,38(01):19-25.
[3] 汪海波, 魏国力, 宗琦, 等. 节理发育岩体巷道掘进爆破数值模拟与应用研究[J]. 黄金科学技术, 2018, 26(3): 342-348.
WANG Haibo, WEI Guoli, ZONG Qi, et al. Numerical simulation and application research on joint development rock roadway blasting excavation [J]. Gold Science and Technology, 2018, 26(3): 342-348.
[4] CHEN X, LI J C, CAI M F, et al. Experimental study on wave propagation across a rock joint with rough surface [J]. Rock Mechanics and Rock Engineering, 2015, 48(6): 2225-2234.
[5] CHEN X, LI J C, CAI M F, et al. A further study on wave propagation across a single joint with different roughness [J]. Rock Mechanics and Rock Engineering, 2016, 49(7): 2701-2709.
[6] 敖聪利. 软弱夹层对爆炸应力波传播的影响[J]. 爆破, 1988(02):23-27+51.
AO Congli. The influence of weak interlayer on the propagation of explosion stress wave[J]. BLASTING. 1988(02): 23-27+51.
[7] 李夕兵, 古德生, 赖海辉. 爆炸应力波遇夹层后的能量传递效果[J]. 有色金属, 1993(04):1-6.
LI Xibing, GU Desheng, LAI Haihun. Energy transmission effects of transient stress waves through sandwiches in rock mass[J]. NONFERROUS METALS. 1993(04):1-6.
[8] 李旺兴, 梁为民, 张青, 等.软弱夹层条件下隧道爆破过程数值模拟[J]. 公路工程, 2011, 36(5): 7-10.
LI Wangxing, LIANG Weimin, ZHANG Qing, et al. Numerical simulation of the tunnel blasting process in weak intercalated layer[J]. Highway Engineering, 2011, 36(5): 7-10.
[9] SAHARAN M R, MITRI H S. Numerical procedure for dynamic simulation of discrete fractures due to blasting[J]. Rock Mechanics and Rock Engineering, 2008, 41(5): 641-670.
[10] 胡世丽, 王星光, 王观石. 子波传过软弱夹层的波形变化规律[J]. 地球物理学进展, 2015, 30(4): 1896-1902.
HU Shili, WANG Xingguang, WANG Guanshi. Waveform change rule of wavelet propagation across soft interlayer[J]. Progress in Geophysics, 2015, 30(4): 1896-1902.
[11] FAN L F, WONG L N Y. Stress wave transmission across a filled joint with different loading/unloading behavior[J]. International Journal of Rock Mechanics and Mining Sciences, 2013, 60: 227-234.
[12] 刘传正, 张建经, 崔鹏. 岩体夹层应力波能量演化及应力响应特征分析[J]. 岩土力学, 2018, 39(6): 2267-2277.
LIU Chuanzheng, ZHANG Jianjing, CUI Peng. Energy evolution and stress response during stress wave prorogation in the intercalation[J]. Rock and Soil Mechanics, 2018, 39(6): 2267-2277.
[13] JAYASINGHE B, ZHAO Z, TECK CHEE A G, et al. Attenuation of rock blasting induced ground vibration in rock-soil interface[J]. Journal of Rock Mechanics and Geotechnical Engineering, 2019.
[14] 田振农, 张乐文. 岩体中软弱夹层影响爆炸波传播规律的数值分析[J]. 沈阳工业大学学报, 2010, 32(3): 349-354.
TIAN Zhennong, ZHANG Lewen. Numerical analysis of blast wave propagation in rock mass containing weak interlayer[J]. Journal of Shenyang University of Technology, 2010, 32(3): 349-354.
[15] 孙金山, 刘贵应, 周晓飞, 等. 爆破地震波穿越边坡软弱夹层时的衰减特征[J]. 工程爆破, 2017,23(05):5-8.
SUN Jinshan, LIU Guiying, ZHOU Xiaofei, et al. Attenuation characteristics of blasting seismic waves passing through weak interlayer[J]. Engineering Blasting, 2017, 23(5): 5-8.
[16] XUE Y, SI H, HU Q. The propagation of stress waves in rock impacted by a pulsed water jet [J]. Powder Technology, 2017, 320: 179-190.
[17] 王玉杰. 爆破工程[M]. 武汉: 武汉理工大学出版社, 2007.
[18] 陈哲浩. 岩石中相邻炮孔爆破裂缝演化研究[D].西安科技大学,2016.
[19] A. H. 哈努卡耶夫. 矿岩爆破物理过程[M]. 刘殿中, 译. 北京: 冶金工业出版社, 1980.
[20] 顾文彬, 王振雄, 陈江海, 等. 装药结构对爆破震动能量传递及爆破效果影响研究[J].振动与冲击, 2016, 35(2): 207-211.
GU Wenbin, WANG Zhenxiong, CHEN Jianghai, et al. Influence of charge structure on the energy transfer of blasting vibration and explosive effect[J]. JOURNAL OF VIBRATION AND SHOCK, 2016, 35(2): 207-211.

PDF(3026 KB)

Accesses

Citation

Detail

段落导航
相关文章

/