深埋引水隧洞光面爆破周边孔装药结构优化试验研究

赵晓明 杨玉民 蒋楠 蔡忠伟 欧阳松

赵晓明, 杨玉民, 蒋楠, 蔡忠伟, 欧阳松. 深埋引水隧洞光面爆破周边孔装药结构优化试验研究[J]. 高压物理学报, 2022, 36(4): 045301. doi: 10.11858/gywlxb.20220503
引用本文: 赵晓明, 杨玉民, 蒋楠, 蔡忠伟, 欧阳松. 深埋引水隧洞光面爆破周边孔装药结构优化试验研究[J]. 高压物理学报, 2022, 36(4): 045301. doi: 10.11858/gywlxb.20220503
ZHAO Xiaoming, YANG Yumin, JIANG Nan, CAI Zhongwei, OUYANG Song. Optimization of Charging Structure of Surrounding Holes in Smooth Blasting of Deep Diversion Tunnel[J]. Chinese Journal of High Pressure Physics, 2022, 36(4): 045301. doi: 10.11858/gywlxb.20220503
Citation: ZHAO Xiaoming, YANG Yumin, JIANG Nan, CAI Zhongwei, OUYANG Song. Optimization of Charging Structure of Surrounding Holes in Smooth Blasting of Deep Diversion Tunnel[J]. Chinese Journal of High Pressure Physics, 2022, 36(4): 045301. doi: 10.11858/gywlxb.20220503

深埋引水隧洞光面爆破周边孔装药结构优化试验研究

doi: 10.11858/gywlxb.20220503
基金项目: 国家自然科学基金(41807265,41972286);中国水利电力对外有限公司项目(CWE-GJ-296/20)
详细信息
    作者简介:

    赵晓明(1973-),男,本科,高级工程师,主要从事水利水电工程施工及项目管理研究.E-mail:zhao_xiaoming1@ctg.com.cn

    通讯作者:

    蒋 楠(1986-),男,博士,副教授,主要从事隧道工程稳定性研究. E-mail:jiangnan@cug.edu.cn

  • 中图分类号: O382; TU45

Optimization of Charging Structure of Surrounding Holes in Smooth Blasting of Deep Diversion Tunnel

  • 摘要: 隧洞爆破周边孔不连续装药结构是影响光面爆破效果的重要因素之一。基于秘鲁圣加旺Ⅲ水电站引水隧洞工程,针对现场爆破施工方案超挖现象,采用ANSYS/LS-DYNA建立周边孔不连续装药结构数值计算模型,分析了不同药卷间距下周边孔模型的围岩爆破效果;选择最优的周边孔装药结构设计方案开展现场爆破试验,对比验证了装药结构设计对隧洞超挖的改善效果。结果表明:当周边孔药卷间距小于350 mm时,爆破不会出现欠挖现象,且超挖范围随着药卷间距的增大而减小;当周边孔药卷间距大于400 mm时,爆破效果开始出现欠挖现象,且随着药卷间距的增大,欠挖范围增大。通过数值模型对比分析得出周边孔的最优药卷间距为350 mm,采用优化后的爆破设计方案进行爆破试验,得到的超挖范围明显减小,最大超挖距离由43 cm降至30 cm。

     

  • 图  工程概况

    Figure  1.  Project overview

    图  爆破效果

    Figure  2.  Blasting effect drawing

    图  数值模型

    Figure  3.  Numerical model

    图  围岩截面示意图

    Figure  4.  Schematic of surrounding rock section

    图  截面B上的围岩损伤云图

    Figure  5.  Damage nephogram of rock on section B

    图  30.00 ms时截面B上的围岩损伤范围

    Figure  6.  Damage range of rock on section B at 30.00 ms

    图  截面A上的围岩损伤云图

    Figure  7.  Damage nephogram of rock on section A

    图  30.00 ms时截面A上的围岩损伤范围

    Figure  8.  Damage range of rock on section A at 30.00 ms

    图  围岩截面示意图

    Figure  9.  Schematic of surrounding rock section

    图  10  截面C上的围岩损伤对比

    Figure  10.  Comparison of surrounding rock damage on section C

    图  11  截面D上的围岩损伤对比

    Figure  11.  Comparison of surrounding rock damage on section D

    图  12  截面E上的围岩损伤对比

    Figure  12.  Comparison of surrounding rock damage on section E

    图  13  优化后的爆破效果

    Figure  13.  Effect drawing of optimized blasting

    表  1  爆破参数

    Table  1.   Blasting parameters

    Blast holeHole typeBlast hole depth/mNumberSingle hole charge/kg
    Empty holeVertical hole3.240
    Cut holeVertical hole3.0131.23
    Auxiliary holeVertical hole3.0561.58
    Peripheral holeVertical hole3.0272.02
    Bottom holeVertical hole3.082.82
    下载: 导出CSV

    表  2  岩石材料参数

    Table  2.   Parameters of rock

    $\,\rho $/(g·cm−3)G/GPaT/MPapc/MPapl/GPa$\,\mu $l$\,\mu $cfc/MPaAB
    2.8411.57848.81.20.01200.0025146.50.32.5
    CNSmaxD1D2EfminK1/GPaK2/GPaK3/GPa
    0.00970.79150.0410.01122542
    下载: 导出CSV

    表  3  空气材料参数

    Table  3.   Parameters of air

    $\,\rho $/(kg·m−3)C0C1C2C3C4C5C6e0/(J·m−3)
    1.2900000.40.402.5×105
    下载: 导出CSV

    表  4  炮泥的主要参数

    Table  4.   Main parameters of blasting mud

    $\,\rho $/(g·cm−3)E/GPa$\,\nu$
    1.82140.3
    下载: 导出CSV

    表  5  炸药材料参数

    Table  5.   Parameters of explosive

    $\,\rho $/(g·cm−3)Ae/GPaBe/GPaR1R2$\omega $E0/GPaV0/cm3
    1.2521418.24.20.90.154.191.00
    下载: 导出CSV
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出版历程
  • 收稿日期:  2022-01-17
  • 修回日期:  2022-02-23
  • 网络出版日期:  2022-05-16
  • 刊出日期:  2022-07-28

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