运用材料力学理论，初步研究了烟囱爆破切口角的选取。
And study how to choose blasting incision Angle with material mechanics.
内容涉及基本原理、实验装置及加工参数对弧柱特性、切口宽度、切口角、无渣切速的影响规律。
The basic principle, test device, and the regularity of cutting parameters affecting to the arc characteristics, kerf width, kerf Angle, and dross free cutting speeds are dealt with.
分析切口形状对烟囱的爆破切口角度、切口高度及倾倒规律的影响，建立砖烟囱和钢筋混凝土烟囱选择不同切口形状时的爆破切口角度、爆破切口高度和倾倒规律的数学模型。
The influence of cut shape on cut Angle, cut height and collapsing rule is analyzed, and the mathematical models to determine cut Angle, cut height and collapsing rule are established.
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