中文摘要：

由于成土原因或人类活动，一些土壤中含有不同含量及大小的碎石。碎石的存在改变了土壤的某些物理特性，入渗过程也因此受到影响。本研究采用定水头入渗试验装置，对7种不同碎石含量（0％，10％，20％，30％，40％，50％，60％）及4种不同碎石直径（0．2～0．5cm，0．5～1．0cm，1．0～3．0cm，3．0～4．0cm）的土壤水分入渗过程进行室内研究，旨在分析碎石含量及直径对土壤入渗过程的影响及其原因，为土石混合介质的研究提供一些理论基础。

英文摘要：

As a result of soil forming process and human activities, rock fragments or detritus exist in soils, different in contents and sizes. Their presence does have some effects on some physical properties of the soil as well as water infiltration process. Based on the experiment of vertical infiltration in lab, effects of content of rock fragments（0%, 10%, 20%, 30%, 40% , 50% and 60% ） and size of the detritus（0.2 - 0.5cm, 0.5 - 1.0 cm, 1.0 - 3.0 cm and 3.0 - 4.0 cm）on water infiltration were studied. The purpose of this study is to determine effect of rock fragments different in content and size on water infiltration process and find out its mechanisms.