针对低应力水平下钙质砂的颗粒破碎现象具有特殊性，分析了围压对钙质土颗粒破碎的影响，揭示其变形过程的力学机制；
Granule failure of calcareous sand is very special at low stress level. The effect of confining pressure on granule farlure is analyzed and its deformation mechanism discussed.
本文还对围压水平影响、碾压施工所造成的土料超固结和各向异性等问题作了简单的讨论。
Here, some problems about the influence of confining pressure level, also the over-consolidation and anisotropy of fill materials due to compaction procedure during construction were discussed too.
这类土，由于固化联结键和高孔隙度，其压密特性，孔隙压力的变化和剪切应力—应变关系均与应力水平有密切关系。
Owing to the bonds and high porosity in such soils, its characteries of compressibility, the change of pore-pressure and shear stress-strain relationship all depend on stress level.
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