中南大学学报（自然科学版）2025，Vol.56Issue(4)：1466-1476,11.DOI:10.11817/j.issn.1672-7207.2025.04.018
竖向荷载下高密实度泥质粉砂岩回填土浸水隆沉计算模型
Vertical load-induced water immersion settlement calculation model for high-density consolidated argillaceous siltstone backfill soil
摘要
Abstract
To explore the water-induced heave-settlement deformation patterns of high-density compacted argillaceous siltstone backfill soil,the argillaceous siltstone backfill soil from Changsha Huanghua airport was studied.Indoor heave-settlement tests were conducted to analyze the heave-settlement behavior of the argillaceous siltstone backfill soil.A calculation model was developed to estimate the settlement induced by particle fragmentation under loading conditions.A separate expansion calculation model was derived by incorporating water absorption behavior.A predictive model for water-induced heave-settlement of argillaceous siltstone backfill soil was established and validated based on the heave-settlement test results.The research show that during the heave-settlement tests,the argillaceous siltstone backfill soil becomes saturated with water.With the increase of the load,the deformation of the specimen gradually changes from heave to settlement.When the load reaches 200 kPa,the load settlement increases and the rate of settlement deformation tends to stabilize.After water saturation,the swelling ratio of the specimen decreases with the increase of the applied load.Comparison between the deformation prediction values of the heave-settlement prediction model and the actual values reveals that the relative error is within 11.63％,demonstrating the applicability of the heave-settlement calculation model.关键词
高密实度回填土/泥质粉砂岩/颗粒破碎/沉降/吸水膨胀/计算模型Key words
high-density compacted backfill soil/argillaceous siltstone/particle breakage/settlement/water absorption expansion/calculation model分类
建筑与水利引用本文复制引用
严狄,王树英,郑响凑..竖向荷载下高密实度泥质粉砂岩回填土浸水隆沉计算模型[J].中南大学学报（自然科学版）,2025,56(4):1466-1476,11.基金项目
国家自然科学基金青年基金资助项目(U1934211,52308425) （U1934211,52308425）
博士后国际交流计划引进项目(YJ20220219)(Projects(U1934211,52308425)supported by the Youth Fund of the National Natural Science Foundation of China （YJ20220219）
Project(YJ20220219)supported by the International Postdoctoral Exchange Fellowship Program) （YJ20220219）
