水力发电学报2024，Vol.43Issue(8)：14-21,8.DOI:10.11660/slfdxb.20240802
含磨料脉冲射流破岩效果试验研究
Experimental study on rock breaking effects of pulsating abrasive water jets
摘要
Abstract
To investigate the rock-breaking effects of abrasive water jets,an experiment is conducted to test five types of hard rock samples with different strengths under the conditions of a pulsating pure water jet and a pulsating abrasive water jet.Using the size of erosion pits as a measure,we compare the rock-breaking effects of these two jets with those of a continuous pure water jet and a continuous abrasive water jet.The results indicate that in the eroding process,the continuous abrasive water jet mainly relies on the grinding action of abrasive particles,while the pulsating one combines such action with a continuous water hammer effect.In the condition of no abrasive particle in the jet flow,the erosion of a continuous water jet primarily depends on a single water hammer pulse that occurs only at the initial stage of the jet,while a pulsating one generates a sequence of pressure pulses that impact the rock samples continuously,leading to fractured zones in the rock sample.关键词
脉冲磨料水射流/破岩试验/冲蚀孔/硬岩Key words
pulsating abrasive water jet/rock breaking experiment/crushing pit/hard rock分类
土木建筑引用本文复制引用
刘斌,张建成,张波,李彪,王亚旭..含磨料脉冲射流破岩效果试验研究[J].水力发电学报,2024,43(8):14-21,8.基金项目
国家自然科学基金面上项目(42272311) （42272311）
国家自然科学基金青年项目(52309134) （52309134）
中国博士后基金(2023M742095) （2023M742095）
