异形孔水包爆破围岩粉碎范围研究

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振动与冲击 ›› 2023, Vol. 42 ›› Issue (11) : 131-138.

论文

异形孔水包爆破围岩粉碎范围研究

张学富1，2，李宁杰3，周杰1，2，韩风雷1，2，张建1，2

作者信息 +

Research on the crushing range of surrounding rock in special-shaped hole water bag blasting

ZHANG Xuefu1,2， LI Ningjie1,2， ZHOU Jie1,2， HAN Fenglei1,2， ZHANG Jian1,2

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文章历史 +

摘要

隧道掘进中光面爆破的超欠挖、开挖轮廓线不光滑及爆破效率低是施工中最为关心的问题。针对异形孔水包爆破破岩机理的问题，本文基于岩石爆破损伤分区理论，拟合并推导出异形孔水包爆破的孔壁冲击力计算式P_d=3028.4K_d^(-1.021)及围岩粉碎区的计算式R_c=(P/N[P_r])^(1/α) (r_b+l)。以重庆市黔江区正阳镇隧道为依托，以自制钻头为工具，通过异形孔水包爆破与常规爆破的对比实验以及岩石爆破损伤阈值的数值模拟，验证了计算式的可靠性。结果表明：前者公式拟合精度为R^2=0.996，后者围岩粉碎范围的理论值与实测值吻合；该爆破方式即使在复杂岩石节理中也能产生光滑的隧道开挖轮廓线；炸药径向不耦合系数K_d≤1.5内，炸药量的增加对围岩粉碎区的影响甚少，其主要对破裂区产生影响。

Abstract

In tunnel driving, the over-under-excavated values of smooth blasting, the uneven contour of excavation and low blasting efficiency are the most concerned problems in construction. Aiming at the problem of rock breaking mechanism by special-shaped hole water bag blasting, based on the theory of blasting. The calculation formula P_d=3028.4K_d^(-1.021) of hole wall impact force of special-shaped hole water bag blasting is fitted, and the calculation formula R_c=(P/N[P_r])^(1/α) (r_b+l) of surrounding rock crushing area is derived. Based on the tunnel in Zhengyang Town, Qianjiang District, Chongqing, and with the self-made drill bit as the tool, the reliability of the calculation formula is verified through the comparative experiment of special-shaped hole water bag blasting and conventional blasting and the numerical simulation of rock blasting damage threshold. The results show that the fitting accuracy of hole wall impact force formula is R^2=0.996, the theoretical value of surrounding rock crushing range formula is consistent with the measured value. This blasting method generates a smooth tunnel excavation profile even in complex rock joints, Radial decoupling coefficient K_d of explosive, and the increase of explosive content in ≤1.5 has little effect on the crushed area of surrounding rock, which mainly affects the fracture area.

导出引用

张学富1，2，李宁杰3，周杰1，2，韩风雷1，2，张建1，2. 异形孔水包爆破围岩粉碎范围研究[J]. 振动与冲击, 2023, 42(11): 131-138

ZHANG Xuefu1,2， LI Ningjie1,2， ZHOU Jie1,2， HAN Fenglei1,2， ZHANG Jian1,2. Research on the crushing range of surrounding rock in special-shaped hole water bag blasting[J]. Journal of Vibration and Shock, 2023, 42(11): 131-138

参考文献

[1] 谢先启. 精细爆破[M]. 华中科技大学出版社，2010.
Xie Xianqi. Precise blasting[M]. Huazhong University of Science and Technology Press, 2010.
[2] Xie L, Lu W, Gu J, et al. Excavation Method of Reducing Blasting Vibration in Complicated Geological Conditions [J]. Shock and Vibration, 2018.
[3] 李清，郭洋，刘航，等. 切槽定向断裂控制爆破的数值模拟研究[J]. 矿业研究与开发，2015，35(12)：79-83.
LI Qing, GUO Yang, LIU Hang, et al. Numerical Simulation on Pre-notched Directional Fracture Blast[J]. Mining Research and Development, 2015, 35(12): 79- 83.
[4] 杨仁树，王雁冰，杨立云，等. 双孔切槽爆破裂纹扩展的动焦散实验[J]. 中国矿业大学学报，2012，41(06)：868-872.
YANG Renshu, WANG Yanbing, YANG Liyun, et al. Dynamic Caustic Experiment Study of Crack Propagation in Two Borehole Cut Blasting[J]. Journal of China University of Mining and Technology, 2012, 41(06): 868- 872.
[5] 郭学彬，肖正学. 刻槽孔静态爆破的应变测量及爆破机理探讨[J]. 爆破，1987(02)：13-18.
GUO Xuebin,XIAO Zhengxue. Strain Measurement and Blasting Mechanism of Static Blasting of Slot Hole[J]. Blasting, 1987(02): 13- 18.
[6] Z Y Jin, C Y Yin, Y Chen, et al. One-dimensional Analytical Model for the Response of Elastic Coatings to Water Blast [J]. Journal of Fluids and Structures, 2015: 37– 56.
[7] Anderson C E, Behner T, Weiss C E. Mine Blast Loading Experiments [J]. International Journal of Impact Engineering, 2011, 38(8-9): 697-706.
[8] Boteler J M, Sutherland G T. Tensile Failure of Water Due to Shock Wave Interactions [J]. Journal of Applied Physics, 2004, 96(11): 6919-6924.
[9] Deshpande V S, Fleck N A. One-dimensional Response of Sandwich Plates to Underwater Shock Loading [J]. Journal of the Mechanics and Physics of Solids, 2005, 53(11): 2347-2383.
[10] Yang J X, Liu C Y. Experimental Study and Engineering Practice of Pressured Water Coupling Blasting [J]. Shock and Vibration, 2017, 2017(6): 1-12.
[11] 冯涵，张学民，王立川，等. 隧道钻爆法水封装药结构爆破引起振动计算分析[J]. 振动与冲击，2020，39(07)：93-100.
FENG Han,ZHANG Xuemin,WANG Lichuan,et al. Calculation and Analysis for Water-sealed Charge Structure Blasting Vibration in Tunnel Drilling and Blasting Construction [J]. Journal of Vibration and Shock, 2020, 39(07): 93-100.
[12] Gu W, Wang Z, Chen J, et al. Experimental and Theoretical Study on Influence of Different Charging Structures on Blasting Vibration Energy [J]. Shock and Vibration, 2015, 2015(6): 1-11.
[13] 宗琦，田立，汪海波. 水介质不耦合装药爆破岩石破坏范围的研究和应用[J]. 爆破，2012，29(02)：42-46.
ZONG Qi,TIAN Li,WANG Haibo. Study and Application on Rock Damage Range by Blasting with Water-decoupled Charge [J]. Blasting, 2012, 29(02): 42-46.
[14] 李桐，陈明，叶志伟，等. 不同耦合介质爆破爆炸能量传递效率研究[J]. 爆炸与冲击，2021，41(06)：4-14.
LI Tong,CHEN Ming,YE Zhiwei,et al. Study on The Energy Transfer Efficiency of Explosive Blasting with Different Coupling Medium [J]. Explosion and Impact, 2021, 41(06): 4-14.
[15] 夏彬伟，刘承伟，卢义玉，等. 缝槽水压爆破导向裂缝扩展实验研究[J]. 煤炭学报，2016,41(02):432-438.
XIA Binwei,LIU Chengwei,LU Yiyu,et al. Experimental Study of Propagation of Directional Fracture with Slotting Hydraulic Blasting [J]. Journal of China Coal Society, 2016, 41(02): 432-438.
[16] 夏彬伟，高玉刚，刘承伟，等. 缝槽水压爆破破岩载荷实验研究[J]. 工程科学学报，2020，42(09)：1130-1138.
XIA Binwei,GAO Yugang,LIU Chengwei,et al. Experimental Study on Rock-breaking Load in Slot-hydraulic Blasting [J]. Journal of Engineering Sciences, 2020, 42(09): 1130-1138.
[17] 雷振，张智宇，黄永辉，等. 岩石爆破破碎能耗随抵抗线的变化规律[J]. 爆炸与冲击，2021，41(07)：151-160.
LEI Zhen,ZHANG Zhiyu,HUANG Yonghui,et al. An Investigation of Energy Consumption Variation in Rock Blasting Breaking with the Resistance Line [J]. Explosion and Impact, 2021, 41(07): 151-160.
[18] 唐红梅，周云涛，廖云平. 地下工程施工爆破围岩损伤分区研究[J]. 振动与冲击，2015，34(23)：202-206.
TANG Hongmei,ZHOU Yuntao,LIAO Yunping. Damage Zone of Surrounding Rock of Underground Engineering under Construction Blasting [J]. Journal of Vibration and Shock, 2015, 34(23): 202-206.
[19] 宗琦. 岩石内爆炸应力波破裂区半径的计算[J]. 爆破，1994(02)：15-17.
ZONG Qi. Calculation of Radius of the Rupture Zone of Blast Stress Wave within Rock [J]. Blasting, 1994(02): 15-17.
[20] Aleksandrova N I, Sher E N. Modeling the Failure of Rock Blocks by Blasting a Cylindrical Charge [J]. Journal of Mining Science, 2006, 42(1): 27–34.
[21] 徐海清. 刻槽控制爆破有限元数值模拟[D]. 武汉理工大学，2004.
XU Haiqing. The Finite Element Numrical Simulation of Groove Fracture Controlled Blasting [D]. Wuhan University of Technology, 2004.
[22] 叶志伟，陈明，魏东，等. 不耦合装药爆破孔壁压力峰值的实验研究[J]. 爆炸与冲击，2021，41(05)：115-124.
YE Zhiwei,CHEN Ming,WEI Dong,et al. Experimental Study on the Peak Pressure of Borehole Wall in Decoupling Charge Blasting [J]. Explosion and Impact, 2021, 41(05): 115-124.
[23] 刘承伟. 缝槽水压爆破高效定向破岩机理[D]. 重庆大学，2019.
LIU Chengwei. Mechanism Study on Efficient and Directional Rock Fracturing by Slotting Hydraulic Blasting [D]. Chongqing University, 2019.
[24] 石少卿. ANSYS/LS-DYNA在爆炸与冲击领域内的工程应用[M]. 中国建筑工业出版社，2011.
SHI Shaoqing. Engineering Application of ANSYS/LS-DYNA in the Field of Explosion and Impact[M]. China Architecture and Building Press, 2011.
[25] 时党勇，李裕春，张胜民. 基于ANSYS/LS-DYNA 8.1进行显式动力分析[M]. 清华大学出版社，2005.
SHI Dangyong, LI Yuchun, ZHANG Shengmin. Explicit Dynamic Analysis Based on ANSYS/LS-DYNA 8.1 [M]. Tsinghua University Press, 2005.