基于多目标优化的液压凿岩系统配置研究

发布时间：2018-03-11 12:49

本文选题：液压凿岩系统　切入点：配置　出处：《长沙矿冶研究院》2017年硕士论文　论文类型：学位论文

【摘要】：液压凿岩钻车是地下金属矿山凿岩钻孔的主要设备之一,其凿岩钻进系统配置合理与否直接决定了钻进效率和钎具的寿命。本文基于地下采矿钻车,采用波动力学、冲击动力学理论、多目标优化算法和试验验证相结合的方法,对其液压凿岩系统配置进行研究。首先,利用波动力学理论对常见的几种凿岩机入射应力波进行了分析和比较,研究表明液压凿岩机产生的入射应力波形是一种平缓理想的应力波形,选择用直径较大的钎杆可以降低最大应力峰值。根据冲击钻进动力学得出的凿岩系统的凿入特性,对液压凿岩机凿入效率进行了分析。比较分析了当前常见的液压凿岩机在配置不同直径钎杆时的最大凿入效率值,并得出活塞和钎杆等直径时,能有最大凿入效率。其次,从液压凿岩系统的凿速和钎具寿命两性能指标入手,建立了凿速和钎杆寿命数学计算模型,对相关影响因素进行了分析,得出影响凿速和钎杆寿命的相关因素之间存在相互影响、相互制约的关系。为了提高液压凿岩系统的整体性能,利用多目标优化算法对液压凿岩系统配置进行优化。以凿速和钎杆寿命为目标函数,将最优推进力和最优转速作为约束条件,建立多目标优化模型,并利用遗传算法求解计算。最后,利用卧式凿岩试验台分别对HYD300液压凿岩机配置不同直径钎杆和调节不同液压凿岩机参数情况下的凿速进行测试,将测试结果与理论分析的结果进行对比分析。本论文提出液压凿岩系统应根据不同的凿岩钻孔条件选择合适的工作性能参数和钎具,以使得液压凿岩系统能达到较优的整体性能。本论文的研究对于提升液压凿岩系统的整体性能和经济性能具有一定的理论价值和工程指导意义。
[Abstract]:Hydraulic drilling rig is one of the main equipment for drilling in underground metal mines. Whether the drilling system is reasonable or not directly determines the drilling efficiency and the life of drill tools. Based on the underground mining rig, wave mechanics is used in this paper. The impact dynamics theory, multi-objective optimization algorithm and test verification are combined to study the configuration of hydraulic drilling system. Firstly, the incident stress waves of several kinds of rock drillers are analyzed and compared by means of wave mechanics theory. The research shows that the incident stress waveform produced by hydraulic rock drill is a kind of gentle ideal stress waveform, and the maximum stress peak value can be reduced by selecting the drill rod with large diameter. According to the drilling dynamics, the drilling characteristics of rock drilling system are obtained. This paper analyzes the drilling efficiency of hydraulic rock drill, compares and analyzes the maximum penetration efficiency of hydraulic rock drill with different diameters, and obtains the maximum penetration efficiency when piston and drill rod are equal in diameter. Starting with the two performance indexes of drilling speed and drill tool life of hydraulic drilling system, the mathematical calculation model of chisel speed and drill rod life is established, and the related influencing factors are analyzed. In order to improve the overall performance of hydraulic drilling system, it is concluded that there is a mutual influence and restriction relationship between the relevant factors affecting the chisel speed and the life of drill rod. The multi-objective optimization algorithm is used to optimize the configuration of hydraulic drilling system. Taking chiseling speed and drill rod life as objective functions, the optimal propulsion force and optimal rotational speed are taken as constraint conditions, and the multi-objective optimization model is established. Finally, the drilling speed of HYD300 hydraulic drilling machine with different diameter and adjusting the parameters of hydraulic drilling machine is tested by using horizontal rock drilling test rig, and genetic algorithm is used to solve the calculation. This paper puts forward that the hydraulic drilling system should select suitable working performance parameters and drilling tools according to different drilling conditions. In order to make the hydraulic drilling system achieve better overall performance, the research of this paper has certain theoretical value and engineering guidance significance for lifting the whole performance and economic performance of the hydraulic drilling system.
【学位授予单位】：长沙矿冶研究院
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TD421.22

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