土含碎石重粘土，其中包括侏罗纪和石炭纪的硬粘土、含有碎石、卵石、建筑碎料和重达25kg的顽石、（总体积10%以内）等杂质的肥粘土和重粘土冰碛粘土，含有重量在50kg以内的巨砾。
本文还对硬土软岩路堑边坡滑坡的特点进行了分析。
This article has also carried on the analysis to the hard soil and soft rock slope of landslide characteristic.
软土对高频地微动信号有滤波作用，对低频信号起放大作用，而硬土层则相反。
Soft soil can filter high frequency signals, but can amplify low frequency signals.
硬土场地中基坑开挖引起的邻近建筑物和道路沉降较小，对周围环境影响不明显。
However, the influence of excavation on settlements of adjacent buildings and roads is little.
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