研究岩石风化过程中岩石化学成分的变化规律，对于进一步研究岩石的风化机理以及岩石的物理力学性质变化过程有着十分重要的意义。

To study the rule of change of rock chemical composition in the weathering process is very important for further research of weathering mechanism and change in rock's physics mechanics character.

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河谷天然岸坡通常由坡面向内有一个强卸荷带和弱卸荷带以及相应的强风化和弱风化带，内侧则为完整新鲜的岩石。

Natural slope usually has a zestier of strong unloading and a zestier of weak unloading and corresponding zone of strong (or weak) weathering, and there is integrity fresh rock in its inside.

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黑色岩层是一种分布广泛且较为特殊的一类岩石，它的风化往往会加速各类岩石以及工程建筑物材料的风化与劣化过程。

As a special kind of rocks, black strata are distributed widely. Their weathering usually accelerates weathering process of each kind of rocks and engineering structure materials.

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