熊伟,钟冬望,严爱国,司剑峰,王鹏宇,刘振标

• 1:武汉科技大学理学院
• 2:湖北省智能爆破工程技术研究中心
• 3:中铁第四勘察设计院集团有限公司

摘要(Abstract)：

消能爆破技术已在陆地上取得了良好的效果,但其在水下爆破工程中的作用尚不清楚。为研究消能爆破技术在水下爆破中的损伤控制效果,借助水介质爆炸容器模拟了不同药量的水下消能爆破试验和一组常规对比爆破试验,并采用压电波动法结合信号能量分析对岩体模型进行了爆破损伤检测。结果表明:所有试样某一点的损伤与该点到炮孔的距离成反比;损伤随着药量的增加而增加,试验所用的245 mm×245 mm×300 mm的C30模型在药量为3 g时炮孔部分已基本被完全破坏;采用压电波动法并结合能量分析得出的爆破损伤因子能够真实的反应岩体的损伤情况;在相同药量条件下,采用消能爆破技术的基底部分损伤比常规爆破技术产生的损伤小33%,水下消能爆破技术具有良好的损伤控制效果,模型试验的结果可以为相关的水下爆破损伤控制工程提供参考。

关键词(KeyWords)： 水下钻孔爆破;爆破损伤;压电陶瓷传感器;爆破损伤检测;水介质爆炸容器

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51574184)

作者(Author): 熊伟,钟冬望,严爱国,司剑峰,王鹏宇,刘振标

参考文献(References)：

• [1] LIU G,LU W,NIU X,et al.Excavation shaping and damage control technique for the breccia lava dam foundation at the Bai-he-tan Hydropower Station:a case study[J].Rock Mechanics and Rock Engineering,2019,53(4):1-19.
• [2] HU H,LU W,YAN P,et al.A new horizontal rock dam foundation blasting technique with a shock-reflection device arranged at the bottom of vertical borehole[J].European Journal of Environmental & Civil Engineering,2017,24(4):481- 499.
• [3] 胡浩然，卢文波，席浩，等.聚-消能复合垫层保护下的水平建基面开挖方法研究[J].岩石力学与工程学报，2016(S2):4129- 4138.[3] HU H R,LU W B,XI H et al.Horizontal foundation surface excavation method under the protection of energy shaped and dissipation composite cushion[J].Chinese Journal of Rock Mechanics and Engineering,2016(S2):4129- 4138.(in Chinese)
• [4] LAI J,GUO X,ZHU Y.Repeated penetration and different depth explosion of ultra-high performance concrete[J].Int J Impact Eng,2015,84:1-12.
• [5] ZHANG Y,LU W,PENG Y,et al.A method to identify blasting-induced damage zones in rock masses based on the P-wave rise time[J].Geotechnical Testing Journal,2017,41(1):31- 42.
• [6] 孙威.利用压电陶瓷的智能混凝土结构健康监测技术[D].大连：大连理工大学，2009.[6] SUN Wei.Health monitoring technology for smart concrete structure using piezoelectric ceramic[D].Dalian:Dalian University of Technology,2009.(in Chinese)
• [7] SONG G,OLMI C,GU H.An overheight vehicle-bridge collision monitoring system using piezoelectric transducers[J].Smart Materials & Structures,2007,16(2):462- 468.
• [8] SI Jian-feng,ZHONG Dong-wang,XIONG Wei.Piezoceramic-based damage monitoring of concrete structure for underwater blasting[J].Sensors,2020,20(6):1672-1683.
• [9] ZHAO S,FAN S,CHEN J.Quantitative assessment of the concrete gravity dam damage under earthquake excitation using electro-mechanical impedance measurements[J].Engineering Structures,2019,191(JUL.15):162-178.
• [10] KONG Q,ROBERT R H,SILVA P,et al.Cyclic crack monitoring of a reinforced concrete column under simulated pseudo-dynamic loading using piezoceramic-based smart aggregates[J].Applied Sciences,2016,6(11):341.
• [11] 蔡路军，刘令，陈少杰，等.爆炸荷载下高强混凝土板损伤的PZT监测[C]//中国力学学会、浙江大学.中国力学大会论文集(CCTAM 2019),2019:7.[11] CAI Lu-jun,LIU Ling,CHEN Shao-jie,et al.PZT monitoring of high-strength concrete slab damage under explosive load [C]//Chinese Society of Mechanics,Zhejiang University.Proceedings of the Chinese Conference on Mechanics (CCTAM 2019),2019:7.(in Chinese)
• [12] 卢文波，胡浩然，严鹏，等.垂直孔复合消能爆破技术及其在建基面开挖中的应用[J].岩石力学与工程学报，2018,37(S1):30-39.[12] LU W B,HU H R,YAN P et al.Vertical borehole shock-reflection blasting technique and its application in foundation excavation[J].Chinese Journal of Rock Mechanics and Engineering,2018,37(S1):30-39.(in Chinese)
• [13] 雷振，魏东，陈明，等.深圳赤湾停车场基坑工程场地平整控制爆破试验研究[J].爆破，2019,36(4):24-30.[13] LEI Z,WEI D,CHEN M et al.Experimental study on controlled blasting of foundation flatness for foundation pit of chiwan parking lot in Shenzhen[J].Blasting,2019,36(4):24-30.(in Chinese)
• [14] H Hao-ran,L Wen-bo,Y Peng,et al.A vibration-isolating blast technique with shock-reflection device for dam foundation excavation in complicated geological conditions[J].Shock and Vibration,2018(7):1-11.