煤矿安全2017，Vol.48Issue(4)：13-15,19,4.DOI:10.13347/j.cnki.mkaq.2017.04.004
气液两相射流冲蚀性能的研究
Study on Erosion Capability of Gas-liquid Two-phase Jet
摘要
Abstract
Gas containing rate is the key parameter that affects impact erosion capability of gas-liquid two-phase jet.We analyzed the relationship between impact force of gas-liquid two-phase jet and crushing depth of coal by the experiment research on different inlet pressure erosion performance of two phase flow.Research shows that the impact force size of gas-liquid two-phase jet is proportional to the crushing depth of coal and rock;the greater static pressure of gas-liquid two-phase jet in its impact zone is,the stronger its impact erosion capability is;when inlet pressure is 0.6 MPa,compared to the water jet,the average impact erosion capacity of gas-liquid two-phase jet can increase nearly 28％.Therefore,the gas-liquid two-phase jet can effectively improve jet rock breaking efficiency,reduce the operating pressure of system,and enhance the safety and reliability of system.关键词
含气率/气液两相射流/冲蚀能力/冲击力/静压/水力割缝/高压水射流Key words
gas containing rate/gas-liquid two-phase jet/impact erosion capability/impact force/static pressure/hydraulic cutting seam/high pressure water jet分类
矿业与冶金引用本文复制引用
魏思祥,杨威,乔时和..气液两相射流冲蚀性能的研究[J].煤矿安全,2017,48(4):13-15,19,4.基金项目
国家自然科学基金资助项目(51404261) （51404261）
江苏省基础研究计划(自然科学基金)资助项目(BK20140196) （自然科学基金）
中国博士后科学基金资助项目(2015T80236,2014M551057) （2015T80236,2014M551057）
