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首页> 外文期刊>International Journal of Mining and Mineral Engineering >Percussive cutting of hard rocks with point attack picks: dependency of specific energy consumption and number of blows per unit length of cut groove on impact energy and cutting parameters
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Percussive cutting of hard rocks with point attack picks: dependency of specific energy consumption and number of blows per unit length of cut groove on impact energy and cutting parameters

机译：用点攻击挑选的硬岩切割攻击：特定能量消耗的依赖性和每单位单位长度的剪切能量和切割参数的削减槽的次数

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摘要

The development of sustainable technological solutions for the non-blasting excavation of hard rocks remains at the forefront of efforts of many researchers and engineers worldwide. This paper discusses the applicability of the percussive cutting method with the use of point attack picks for hard rock excavation applications. Based on laboratory test results, regression models describing dependencies of the specific energy consumption and the number of blows per unit length of cut groove on the impact energy and cutting parameters were developed. Several hard rocks such as sandstone, granodiorite and dolomite samples with respective uniaxial compressive strengths of 139 MPa, 205 MPa and 79 MPa, were used in the cutting tests. The study has demonstrated that effective cutting of rocks used in the tests is possible if the single impact energy exceeds 20-30 Joules per mm of cut depth. The currently achievable maximum cutting speed is discussed.
机译：对于全世界许多研究人员和工程师的努力的最前沿，为耐火挖掘的可持续技术解决方案的开发仍然存在于全球许多研究人员和工程师的最前沿。 本文讨论了冲洗方法对硬岩挖掘应用的点攻击选择的适用性。 基于实验室测试结果，开发了描述特定能量消耗依赖性的回归模型以及在冲击能量和切割参数上的每单位切割槽的每单位长度长度的长度的次数。 在切割试验中使用了几种具有相应单轴抗压强度的砂岩，Granodiorite和白云石样品，例如单轴抗压强度，在切割试验中使用。 该研究表明，如果单一冲击能量超过每毫米切割深度的焦点超过20-30焦耳，则可以有效地切割测试中使用的岩石。 讨论了目前可实现的最大切割速度。

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