通过对容重、天然孔隙比和固结沉降量等岩土物理、力学性质指标随深度或自重应力变化而变化的规律的分析,探讨了岩土内部自重应力场的分布规律。结合工程现场荷载试验,并应用Hoek-Brown强度准则,讨论了砂砾软岩极限承载能力及自重应力对其极限承载能力的有利影响。结果表明,地壳浅层的岩土自重应力场分布复杂,并存在构造应力场。 Based on the analysis of the laws of rock mass physical and mechanical properties changing with depth or self-weight stress, such as bulk density, natural void ratio and consolidation settlement, the distribution law of self-weighting stress field in geotechnical soil is discussed. Combined with the on-site load test and the Hoek-Brown strength criterion, the beneficial effects of the ultimate bearing capacity of gravel soft rock and the self-weighting stress on its ultimate bearing capacity are discussed. The results show that the distribution of the self-weight stress field in the shallow crust is complex and the tectonic stress field exists.