To adopt white light digital speckle correlation method, so as to observe the coal body's deformation and destruction law in pickcutting course.
采用白光数字散斑相关的方法,观测截齿截割作用下的煤体变形破坏情况。
2
According to the compressive strength of coal rock mass, the paper provided the calculation formula of the pickcutting force during the coal cutting operation.
根据煤岩体的抗压强度,给出了镐形截齿破煤过程中截割力的计算公式。
3
The damage styles of cast-in cuttingpick and hard-solder forging cuttingpick are analyzedaccording to the comparing experiment under coal mining well.