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看了你刊第九期所載楊春发工程师的“試談鑽粒鑽进尅取原理”一文之后,我有一些不同的意見。茲本着学习与研究的精神,將各人的粗淺见解提出与大家研究。一、圓整鑽粒与破碎鑽粒尅取岩石是互相配合、互相依賴、缺一不可的。完整鑽粒与破碎鑽粒由于二者的形体不同,所以抗压強度也各異,在井底工作面的抗压强度及运动狀态是不一致的。因此,二者的剋取原理也必有所不同。完整鑽粒的抗压強度大于破碎鑽粒,对工作面的压力也大于破碎鑽粒,在工作面上进行滾动压縮与巨烈的冲击压縮,因而能够破坏岩石的組織結構。当圆整鑽粒承受鑽头的压力大于它本身的抗压强度,小于底面接触的岩石,再次破碎的抗压强度时,就要破碎,
After reading the article entitled “On the Principles of Drilling and Drilling”, written by Yang Chunfa’s engineer in your ninth issue, I have some different opinions. In line with the spirit of study and research, I present my research ideas to everyone. First, the round diamond and broken diamonds Grasp the rock is mutual cooperation, mutual dependence, are indispensable. Complete drill and broken drill because of their different shapes, so the compressive strength is also different, the compressive strength of the working face in the bottom and the state of motion is inconsistent. Therefore, the principle of the two must be different. The compressive strength of a complete drill is greater than that of a broken drill. The pressure on a work surface is also greater than that of a broken drill. Rolling compression and heavy impact compression on the work surface can destroy the structure of the rock. When the round drill bit bear the pressure greater than its own compressive strength, less than the bottom of the rock contact, once again crushing the compressive strength, it is necessary to break,