水文地质工程地质2026，Vol.53Issue(3)：1-20,20.DOI:10.16030/j.heg.202511017
黄土湿陷微观机制、理论模型及评价技术
Micro-mechanisms,theoretical models,and evaluation techniques of loess collapsibility
摘要
Abstract
Loess,widely distributed across northwestern China,is a Quaternary aeolian deposit characterized by its pronounced collapsibility.Owing to its naturally metastable structure,loess presents high strength under low-moisture conditions but may experience significant deformation when subjected to loading/wetting,thereby triggering serious geohazards such as landslides and subsidence.This paper comprehensively reviewed the micro-mechanisms,theoretical models,and evaluation methods of loess collapsibility.By comparing the microstructures,water retention properties,and compression and shear behavior of intact,compacted,and reconstituted loess,the coupled effects of soil structure and suction on collapse properties were elucidated.Furthermore,an elastoplastic constitutive model incorporating coupled structure-suction effects,and a simplified method for evaluating loess collapsibility,were developed.Combining the proposed simplified method with machine learning techniques and time domain reflectometry(TDR),an approach for in-situ rapid evaluation of loess collapsibility was proposed.These studies provide both theoretical and technical support for the assessment and mitigation of loess-related geohazards and engineering issues.关键词
黄土/湿陷/微观机制/理论模型Key words
loess/collapsibility/micro mechanism/theoretical model分类
天文与地球科学引用本文复制引用
穆青翼,戴宝林,周超,彭建兵..黄土湿陷微观机制、理论模型及评价技术[J].水文地质工程地质,2026,53(3):1-20,20.基金项目
国家自然科学基金项目(42522705,52279109,51909205) （42522705,52279109,51909205）
