袁瑞甫, 陈立峰, 张志刚,等.浆液磨料水射流切割能力试验及预测模型[J].河南理工大学学报（自然科学版）,doi:10.16186/j.cnki.1673-9787.2021100004.

YUAN R F, CHEN L F, ZHANG Z G, et al.Experiment and prediction model on the cutting ability of slurry abrasive water jet[J].Journal of Henan Polytechnic University(Natural Science) ,doi:10.16186/j.cnki.1673-9787.2021100004.

浆液磨料水射流切割能力试验及预测模型（网络首发）

袁瑞甫1,2, 陈立峰1, 张志刚1, 姚远航1, 吴俊杰1

1.河南理工大学 能源科学与工程学院，河南 焦作  454000;2.河南理工大学 煤炭安全生产与清洁高效利用省部共建协同创新中心，河 南 焦作  454000

摘要:为提高浆液磨料水射流切割能力，运用自研的浆液磨料和切割设备，进行切割混凝土、岩 石试验，分析切割压力、喷嘴移动速度、材料单轴抗压强度对切割能力的影响。结果表明：相同 工况下浆液磨料水射流切割能力远超纯水射流的，混凝土切割深度最大能达到量级差别，并且 材料强度越大，浆液磨料水射流切割能力优势越明显；浆液磨料水射流能够实现对中—硬砂岩 的有效切割（0. 5~1.0 h内能切割100 mm深，10 m长的切缝），可以应用于煤矿切顶卸压、切顶 留巷、工作面夹矸处理等现场工程；射流喷嘴在切割对象同一位置的冲击时间越长，“水垫”作用越明显，相同切割时间内，喷嘴多次快速移动的重复切割比单次慢速移动的切割效率高；通 过分析切割试验结果，以切割压力、喷嘴移动速度、材料单轴抗压强度为变量构建切缝深度预 测模型，并在此基础上得到重复切割时以切割次数为变量的切割深度预测模型。

关键词:浆液磨料水射流;切割能力;重复切割;切割深度;预测模型

中图分类号：TD315

doi:10.16186/j.cnki.1673-9787.2021100004

基金项目:国家自然科学基金资助项目（52174109）；河南理工大学太行学者基金资助项目（2019）

收稿日期:2021-10-04

修回日期:2021-11-16

网络首发日期: 2023-04-13

Experiment and prediction model on the cutting ability of slurry abrasive water jet（Online）

YUAN Ruifu1,2, CHEN Lifeng1, ZHANG Zhigang1, YAO Yuanhang1, WU Junjie1

1.School of Energy Science and Engineering，Henan Polytechnic University，Jiaozuo  454000，Henan，China;2.State Collaborative Innovation Center of Coal Work Safety and Clean-efficiency Utilization，Henan Polytechnic University，Jiaozuo  454000，Henan，China

Abstract:The cutting experiment of slurry abrasive water jet on concrete and rock materials was carried out by using slurry abrasive water jet method and cutting experimental equipment developed by the authors. The influence of cutting pressure， nozzle moving speed and material parameters on cutting ability was analyzed. It is considered that under the same condition，the slurry abrasive water jet has much more cutting ability than pure water jet，and the maximum cutting depth on concrete can reach the difference of magnitude，and the greater the material strength，the more obvious the cutting ability of slurry abrasive water jet is. The cutting ability of slurry abrasive water jet can effectively cut medium hard sandstone （such as cutting slot with 100 mm depth and 10 m length in 0. 5~1.0 h），and can be applied to the field engineering in coal mine such as cutting roof stratum to pressure relief，cutting roof stratum to retaining roadway，and gangue broken in working face. The longer the impact time of jet nozzle in the same position of cutting object，the more obvious the effect of“water cushion”，so the efficiency of multiple quick repeated cutting is higherthan that of single slow cutting in the same cutting time. Through the induction of cutting experiment results，the prediction model of cutting depth is obtained，which is based on cutting pressure，nozzle moving speedand uniaxial compressive strength of material. On the basis of the model，the cutting depth prediction modelfor repeated cutting with the number of cutting times as variable is obtained.

Key words:slurry abrasive water jet;cutting ability;repeated cutting;cutting depth;prediction model

CLC：TD315