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矿业及地下工程的主要对象是岩石,自然界的岩石,又是各种各样的矿物集合体,物理力学性质极其复杂,具有非均质各向异性和含内应力等特性,并受环境因素(水、温度)和工程因素的影响。不同种类的岩石,所表示出的凿岩爆破,采掘,稳定性等技术指标也不一样,对其不同岩体进行合理的分类(级)是正确地进行采掘工程设计的基础。一个完善的符合采掘工程实际的岩石分类,对改善采掘设计和计划,发展新工
The main objects of mining and underground engineering are rocks, rocks in nature and various kinds of mineral assemblages. Their physical and mechanical properties are extremely complex and have heterogeneous anisotropy and stress-containing characteristics. They are subject to environmental factors Water, temperature) and engineering factors. Different kinds of rocks show different technical indexes such as rock blasting, excavation and stability. Reasonable classification (grade) of different rock mass is the basis for proper mining engineering design. A complete rock classification that is in line with the actual mining engineering is of great importance in improving excavation design and planning and developing new workers