岩体不连续面的产状对研究岩体的稳定性有十分重要的作用。对于断层、岩层界面等延展范围较大的不连续面和对于节理、片理等成组出現的系統不连续面,可以通过地面测绘的方法取得近地表的资料。但不连续面的产状可能随深度发生变化,对像露天采矿场一类的岩体工程来说,需要采取定向岩心以测定深部不连续面的产状(主要是指系 The occurrence of rock discontinuities plays an important role in studying the stability of the rock mass. For the discontinuous planes with large extensions such as faults and rock boundaries, and the system discontinuities appearing in groups such as joints, schistosity, etc., near-surface data can be obtained through surface mapping methods. However, the occurrence of discontinuities may vary with depth. For rock mass projects such as open pit mining, oriented cores need to be used to determine the occurrence of deep discontinuities (mainly referring to systems).