The landslides of opencast mines, the surrounding rock instability of underground opening and surface collapse are the three main geologic hazardr or geotechnique problems of mines.

• 露天矿滑坡,地下平巷围岩失稳和地面塌陷是矿山三大主要地质灾害或岩土工程问题。据优势面的分析观点,它们是受优势断裂或优势面控制的。