Because rock mass possesses heterogeneity, discontinuity and rheology property, there exists some problems on the choice of rock mass mechanical parameter of layer rock mass slope engineering.
由于岩体具有不均匀性、不连续性和随时间变化的特性，目前在层状岩体边坡工程的岩体力学参数选取方面仍然存在一些问题。
The weathering layer is an obvious index for sedimentary discontinuity and change of environment.
风化层是沉积间断和环境变迁的明显标志。
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