进行了光面护壁爆破和切缝护壁爆破技术的动态光弹性试验，获得了光面护壁爆破和切缝护壁爆破过程的等差条纹图。
The isochromatic fringes graphs of smooth blasting and cutting seam blasting of pipe protecting borehole wall were obtained upon dynamic photo-elasticity experiments on both kinds of blasting.
分析了光面护壁爆破的机理和装药量的计算方法。
Mechanism of smooth borehole wall protection blasting and calculation method of the charge are analyzed in this paper.
进行了光面护壁爆破和切缝护壁爆破技术的动态光弹性试验，获得了光面护壁爆破和切缝护壁爆破过程的等差条纹图。
Dynamic photo elasticity experiment is conducted, and the isochromatic fringes graphs in the process of smooth blasting of pipe protecting borehole wall is obtained.
进行了光面护壁爆破和切缝护壁爆破技术的动态光弹性试验，获得了光面护壁爆破和切缝护壁爆破过程的等差条纹图。
The shear stress on smooth blasting of pipe protecting borehole wall between free face and protecting face reaches as high as 3.
进行了光面护壁爆破和切缝护壁爆破技术的动态光弹性试验，获得了光面护壁爆破和切缝护壁爆破过程的等差条纹图。
The shear stress on smooth blasting of pipe protecting borehole wall between free face and protecting face reaches as high as 3.
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