1.Chongqing University State key laboratory of coal mine disaster dynamics and control, Chongqing 400030,China
2.Chongqing University school of resources and safety engineering, Chongqing 400030,China
Abstract：Jet pressure characteristics determine its impact capacity, for the booster type pulse water jet transient pressure characteristics are not clear this problem, the use of self-developed booster type pulse water jet pressure acquisition system to carry out experiments to explore the inlet water pressure, oil pressure and nozzle diameter and other parameters on the booster chamber pressure characteristics of the law of influence. The test results show that: as the inlet pressure increases, the peak pressure remains unchanged, the valley pressure increases simultaneously, the frequency increases, and the boost ratio remains unchanged; as the inlet oil pressure increases, the peak pressure gradually increases, the valley pressure remains unchanged, the frequency increases, and the boost ratio remains unchanged; as the nozzle diameter increases, the peak pressure gradually decreases, the valley pressure remains unchanged, the frequency increases, and the boost ratio gradually decreases. Meanwhile, the single cycle instantaneous pressure includes two primary and one secondary pulsations. By modulating the inlet pressure, discontinuous and continuous pulsation pressure characteristics can be obtained.
张洋凯1,2，卢义玉1,2，汤积仁1,2，凌远非1,2. 增压式脉冲水射流瞬时压力特性实验研究[J]. 振动与冲击, 2024, 43(2): 219-225.
ZHANG Yangkai1,2,LU Yiyu1,2,TANG Jiren1,2,LING Yuanfei1,2. Experimental study on the instantaneous pressure characteristics of a pressurized pulsed water jet. JOURNAL OF VIBRATION AND SHOCK, 2024, 43(2): 219-225.
[1] Y Liu, J Wei, T Ren. Analysis of the stress wave effect during rock breakage by pulsating jets [J]. Rock Mechanics and Rock Engineering, 2015, 49: 503-514.
[2] Y Lu, F Huang, X Liu, et al. On the failure pattern of sandstone impacted by high-velocity water jet [J]. International Journal of Impact Engineering, 2015, 76: 67-74.
[3] 倪红坚,王瑞和.脉冲射流破岩规律的数值试验[J].石油钻探技术,2002,06:15-17.
NI Hong-jian, WANG Rui-he. Numerical Experimental Study on Rock Breaking with Pulse Water Jet [J], Petroleum Drilling techniques, 2002,06:15-17.
[4] 潘越,杨帆,张泽鹏,等.截断式脉冲水射流冲蚀煤岩特性数值模拟[J].振动与冲击,2021,40(06):283-288.
PAN Yue, YANG Fan, ZHANG Ze-peng,et al.Numerical simulation of coal rock fragmentation characteristics under interrupted pulse water jet [J], Journal of Vibration and Shock, 2021,40(06):283-288.
[5] 司鹄,薛永志.基于SPH算法的脉冲射流破岩应力波效应数值分析[J].振动与冲击,2016,35(05):146-152.
SI Hu, XUE Yong-zhi. Numerical analysis for stress wave effects of rock broken under pulse jets [J], Journal of Vibration and Shock, 2016,35(05):146-152.
[6] 卢义玉,张赛,刘勇,等.脉冲水射流破岩过程中的应力波效应分析[J].重庆大学学报,2012,35(01):117-124.
LU Yi-yu, ZHANG Sai, LIU Yong, et al. Analysis on stress wave effect during the process of rock breaking by pulsed jet [J], Journal of Chongqing University, 2012,35(01):117-124.
[7] 陆朝晖,卢义玉,Michael Hood,等.截断式脉冲射流流场结构模拟与冲蚀硬岩能力分析[J].振动与冲击,2017,36(19):180-185.
LU Zhao-hui, LU Yi-yu, Michael Hood, et al. Numerical simulation and analysis on the flow field structure and hard rock erosion potential of a disc-slotted pulse water jet [J], Journal of Vibration and Shock, 2017,36(19):180-185.
[8] 倪红坚,唐志文,霍洪俊,等.簧阀阻断式脉冲磨料射流破岩的试验研究[J].水动力学研究与进展A辑,2011,26(05):567-573.
NI Hong-jian, TANG Zhi-wen, HUO Hong-jun, et al. Experimental study on rock-breaking under spring valve blocking pulsed abrasive water jet [J],Chinese Journal of Hydrodynamics, 2011, 26(05):567-573.
[9] S Dehkhoda, M Hood. An experimental study of surface and sub-surface damage in pulsed water-jet breakage of rocks [J]. International Journal of Rock Mechanics and Mining Sciences, 2013, 63: 138-147.
[10] W Liu, Y Kang, M Zhang, et al. Self-sustained oscillation and cavitation characteristics of a jet in a helmholtz resonator [J], International Journal of Heat and Fluid Flow, 2017, 68: 158-172.
[11] R Tripathi, S Hloch, S Chattopadhyaya, et al. Application of the pulsating and continous water jet for granite erosion [J]. International Journal of Rock Mechanics and Mining Sciences, 2020,126.
[12] Y Ling, Z Ge, J Tang, et al. Development of a hydraulically controlled piston-pressurized pulsed water jet device and its application potential for hard rock breaking [J]. Review of Scientific Instruments, 2021, 92.
[13] 汤积仁,汪壘,卢义玉,等.增压式脉冲水射流脉动特性可视化试验研究[J].振动与冲击,2021,40(20):1-8.
TANG Ji-ren, WANG Lei, Lu Yi-yu, et al. An experimental study on visualization of pulsation characteristics of supercharged pulsed water jet [J]. Journal of Vibration and Shock, 2021,40(20):1-8.
