一、岩石分级的意义 采矿工程的工作对象是岩石。在采矿工作中经常遇到的最简单、最基本的过程,就是把岩石从整体上破碎并开采出来。同时为了破碎和开采它,为了人员和设备的运行,又要对采掘空间周围的岩石加以维护。这样,破碎岩石和防止岩石的破碎,就成了采矿工程中的基本矛盾之一。毛主席教导我们:“科学研究的区分,就是根据科学对象所具有的特殊的矛盾性。因此,对于某一现象的领域所特有的某一种矛盾的研究,就构成某一门科学的对象。”所以 First, the significance of rock classification Mining engineering work object is rock. The simplest and most basic process often encountered in mining work is to crumble and mound the rock as a whole. At the same time, in order to crush and mine it, in order to operate personnel and equipment, the rock surrounding the excavation space should be maintained. In this way, crushing rocks and preventing rock fragmentation has become one of the basic contradictions in mining engineering. Chairman Mao taught us: “The distinction between scientific research is based on the particular contradictions that scientific subjects have, and therefore a particular kind of contradictory study of the field of a phenomenon constitutes the subject of a science. ”and so