The interbedding natures exist not only between red sandstone, mudstone and shale but also between red beds with coal seam, magmatite, evaporite and varied rock, respectively.

• 由于砂岩、泥岩、页岩、蒸发岩、杂色岩等多种软硬岩层互层结构和工程活动等因素的影响，沿着软弱结构面易发生滑坡、差异风化等工程地质问题。