轻非水相液体给油度变化特征及影响因素研究  

Study on the Variation Characteristics and Influencing Factors of Oil Feed Degree of Light Non-aqueous Phase Liquids

作　　者：尹彦礼[1,2] 张宏利 王杰 刘宇 李洪良 程家乐 张赫鹏 YIN Yanli;ZHANG Hongli;WANG Jie;LIU Yu;LI Hongliang;CHENG Jiale;ZHANG Hepeng(North China University of Water Resources and Electric Power,Zhengzhou 450046,China;Henan College of Industry and Information Technology,Jiaozuo 454000,China;Zhongsheng Environmental Technology Development Co.,Ltd.,Xi′an 710065,China)

机构地区：[1]华北水利水电大学,河南郑州450046 [2]河南工业和信息化职业学院,河南焦作454000 [3]中圣环境科技发展有限公司,陕西西安710065

出　　处：《华北水利水电大学学报(自然科学版)》2025年第2期153-160,共8页Journal of North China University of Water Resources and Electric Power:Natural Science Edition

基　　金：国家自然科学基金项目(41372260);水文水资源与水利工程科学国家重点实验室“一带一路”水与可持续发展科技基金项目(2021490511)。

摘　　要：给水度是重要的水文地质参数之一,为地下水非稳定流计算和地下水资源评价提供了不可或缺的数据。目前诸多学者对给水度进行了大量研究,但对于轻非水相液体(Light non-aqueous phase liquid,LNAPL)在土壤中的运移以及给油度研究尚少。通过室内土柱排水、排油试验,测定不同排水时间、排油时间、水头差、LNAPL压力差条件下给水度与给油度的变化规律,并分析其影响因素,为地下石油污染修复提供科学依据。研究结果表明:①受排油时间和LNAPL压力差的影响,给油度呈非线性变化。②分段排水、排油时间为2 h时,均质细砂的给水度和给油度均趋于稳定,分别达到0.25和0.21;均质粉砂给水度与给油度差别较小,分别趋于稳定值0.20和0.18。③均质细砂和均质粉砂的给油度受粒径、排油时间影响较大,均质细砂的排油时间与给油度呈正比;均质粉砂的给油度相较于均质细砂在相同LNAPL压力差和排油时间条件下更为稳定。研究结果对于LNAPL污染土地修复具有重要意义。Water yield is one of the important hydrogeological parameters,which provides indispensable data for calculation of unsteady flow and evaluation of groundwater resources.At present,many scholars have conducted a lot of research on the degree of water supply,but there is little research on the migration of LNAPL in soil and the degree of oil supply.In this paper,through the indoor soil column drainage and oil discharge test,the change law of water supply degree and oil feed degree under different drainage and oil discharge time and water head difference condition is determined,and its influencing factors are analyzed,to provide scientific basis for underground oil pollution.The results of the study show that:①The oil feeding degree shows a nonlinear variation influenced by the oil draining time and the LNAPL pressure difference;②When the time of drainage and oil discharge was 2 h,the water and oil feeding degree of homogeneous fine sand tended to be stable,reaching 0.25 and 0.21,respectively;the difference between the water and oil feeding degree of homogeneous powder sand was small,tending to be stable values of 0.20 and 0.18,respectively;③The oiling degree of homogeneous fine sand and homogeneous silt sand was greatly affected by the particle size and oiling time,and the oiling time of homogeneous fine sand was positively proportional to the oiling degree;the oiling degree of homogeneous silt sand was more stable than that of homogeneous fine sand under the same conditions of LNAPL pressure difference and oiling time.The results are of great significance for the remediation of LNAPL contaminated land.

关 键 词：LNAPL 给油度 给水度 LNAPL压力差 非线性 

分 类 号：P641[天文地球—地质矿产勘探]