淹没磨料射流的岩石冲蚀实验研究.pdfVIP

38 2 Vol. 38 No.2 2009 3 Journal of China University of Mining T echnology Mar. 2009 1 2 2 2 2 向文英, 李晓红 , 卢义玉 , 葛 强 , 李 倩 ( 1. , 400045; 2. , 400044) : 为了有效解决水下切割问题, 并大大提高射流的切割能力, 将淹没射流装置与磨料射流系 统 合形成淹没磨料射流系统, 采用高分辨率的数码摄像系统, 研究了淹没磨料射流空泡云的形 成; 利用电子天平的精确测量系统, 测试分析了淹没磨料射流对岩石的冲蚀性能. 结果表明: 淹没 磨料射流在岩石冲蚀实验中, 最优有效靶距直径比为4. 28, 最优冲蚀时间为1 min, 较纯水空化 射流工作效率提高3 倍. 随着泵压的增加, 淹没磨料射流对花岗石的冲蚀质量冲蚀深度增加; 随 着围压的增加, 对花岗石的冲蚀质量冲蚀深度减少. : 淹没磨料射流; 空泡云; 岩石; 冲蚀性能 : TU 443 : A : 1000 1964( 2009) 02 0240 04 Experimental Study of Rock Erosion with Submerged Abrasive Water Jets 1 2 2 2 2 XIANG Wen ying , LI Xiao hong LU Yi yu , GE Qiang , LI Qian ( 1. College of Urban Construction and Environmental Engineering, Chongqing University, Chongqing 400045, China; 2. College of Resource and Environmental Science, Chongqing University, Chongqing 400044, China) Abstract: For resolving the problem of incising under water and improving the capability of in cising greatly, a submerged abrasive water jets system was proposed by combining the sub merged water jets device with the abrasive water jets. T he formation of bubble cloud in sub merged abrasive water jets and the capability of erosion to rock were investigated using a nu meral photo with high resolution and a measure system of electron scale, respectively. T he re sults show that the best ratio of effective distance of target is 4. 28, and the best erosion time is one minute. T he work efficiency is three times than cavitating water jets in the rock erosion ex perimentation. Both the mass erosion and depth erosion on granitic incre