| Reasonable location parameters of pick and nozzle in combined cutting system简 |
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| 引用本文： | 曾锐,杜长龙,陈荣俊,王文娟.Reasonable location parameters of pick and nozzle in combined cutting system简[J].中南工业大学学报(英文版),2014(3):1067-1076. |
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| 作者姓名： | 曾锐 杜长龙 陈荣俊 王文娟 |
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| 基金项目： | Project（2012AA062104） supported by the National High Technology Research and Development Program of China; Project（201104583） supported by the Postdoctoral Special Funded Projects, China |
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| 摘 要： | The drum shearer and high pressure water jet combined cutting system is an effective technology to cut hard coal-rock, but one problem of the technology is the choice of pick and nozzle location parameters. In order to solve the problem, the process and mechanism of combined cutting arc studied and mining seepage catastrophe theory is used to construct the mathematic and physical model of combined cutting hard coal-rock. Based on the model and detailed analysis of combined cutting mechanism, the single pick and nozzle combined cutting test-bed is built to test the main pick and nozzle location parameters of drum shearer and water jet combined cutting system. Test results show that the best vertical distance between the pick-tip and nozzle center point is the sum of cutting thickness and proper target distance in the Y axial direction; the best horizontal distance is the length between pick-tip point and coal-rock surface bursting crack point in the X axial direction. The best incident angle of water jet should be the same as the bursting crack line＇s angle in theory, but considering other important factors comprehensively, it is more reasonable when the incident angle of water jet is 90°.
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| 关 键 词： | 切割系统 喷嘴组合 位置参数 高压水射流切割 滚筒采煤机 物理模型 垂直距离 突变理论 |
Reasonable location parameters of pick and nozzle in combined cutting system |
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| ZENG Rui,DU Chang-long,CHEN Rong-jun,WANG Wen-juan.Reasonable location parameters of pick and nozzle in combined cutting system[J].Journal of Central South University of Technology,2014(3):1067-1076. |
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| Authors: | ZENG Rui DU Chang-long CHEN Rong-jun WANG Wen-juan |
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| Affiliation: | [1]School of Mechanical and Electrical Engineering, China University of Mining and Technology, Xuzhou 221008, China [2]Department of Airfield Engineering, Air Force Logistics College, Xuzhou 221000, China |
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| Abstract: | combined cutting location parameter water jet mining seepage theory hard coal-rock |
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| Keywords: | combined cutting location parameter water jet mining seepage theory hard coal-rock |
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