黄土孔隙、裂隙及其优先流研究进展

开展黄土孔隙、裂隙与黄土优先流研究对黄土高原农业耕作、饮用地下水安全、水土保持及地质灾害防治具有重要理论意义和实用价值。介绍了黄土孔隙、裂隙及优先流研究进展,结合当前研究的不足,对研究思路和应用前景提出展望。认为定量刻画黄土微细观孔隙、裂隙结构模型,水土作用下的黄土颗粒滑移机理,孔隙、裂隙演化特征及其规律,揭示水-土耦合作用下的黄土灾变力学机理等,是当前及今后一段时期黄土孔隙、裂隙及黄土优先流研究的重要任务。

Research Progress of Pore, Fracture and Preferential Flow for Loess

This research has the important theoretical significance and practical value to research on pore, fracture and preferential flow in the field of farming on the loess plateau, in the field of drinking groundwater safety, in the field of water and soil conservation and in the field of prevention and control of geological disasters. This paper introduced the research progress of pore, fracture and preferential flow at home and abroad, put forword outlook of research ideals and the application prospect based on the current study shortage, and thought that the important research task of pore, fracture and preferential flow is to build the structure model of micro-meso-scopic pore and fracture, to study sliding mechanism of loess particle under the action of soil and water, to study evolution characteristics and laws of pore and fracture of loess, and to reveal mecnanical mechanism of loess disaster under the coupled action of water and soil at present and future period.