不同性质煤岩下掘进机截割载荷的试验研究

发布时间：2018-07-25 20:14

【摘要】：对掘进机截割过程的机理进行了研究,对煤炭和岩石的性质对截割载荷的影响进行了深入分析。针对使用传统计算方法计算截割过程中的截割载荷存在的缺陷,提出了有限元模拟方法,模拟动态截割过程,并进行试验。提取了多种不同煤岩的坚固性系数,并制取相应的硬度煤层,以分析不同性质的煤岩对截割载荷的影响,并推导了三向力与坚固性系数之间的关系。通过对比分析发现,对截割载荷的理论公式推导、模拟分析、试验三者的结果相吻合。结果表明,仿真与试验分析不仅提供了可靠的截割载荷的精确计算方法,而且也提供了针对不同地质条件的煤岩选择合适的截齿的参考依据。
[Abstract]:The mechanism of cutting process of roadheader is studied, and the influence of coal and rock properties on cutting load is analyzed. In view of the defects of the traditional calculation method in calculating the cutting load, a finite element simulation method is proposed to simulate the dynamic cutting process, and the experiments are carried out. In order to analyze the influence of different types of coal and rock on cutting load and to derive the relationship between triaxial force and rigidity coefficient, several kinds of solid coefficients of coal and rock are extracted and the corresponding hardness seams are made out in order to analyze the influence of different properties of coal and rock on the cutting load. Through comparison and analysis, it is found that the theoretical formula derivation, simulation analysis and test results of cutting load are in agreement with each other. The results show that the simulation and experimental analysis not only provide a reliable accurate calculation method for cutting load, but also provide a reference basis for selecting suitable cutting teeth for different geological conditions of coal and rock.
【作者单位】：辽宁工程技术大学机械工程学院;
【分类号】：TD421.5

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