ALTERNATIVE ESTIMATION OF THE SOIL WATER RETENTION CURVE BASED ON THE ARYA-PARIS MODEL

نویسندگان

چکیده

ABSTRACT: The physical and chemical characteristics of a soil determine its hydraulic properties, such as conductivity, infiltration, moisture. Due to the usefulness soil's moisture retention characteristic curve, several methodologies have been developed obtain it. Mathematical models for prediction this property constitute type that is economical very affordable. One most practical model Arya Paris (1981), which, however, requires an adjustment parameter, which limits applicability in some cases, and, addition, underestimates content by not considering water remaining menisci. present study proposes alternative based on Paris, but attempts circumvent disadvantages mentioned above, assuming pore network formed conical pores. predictions curve our were compared with those original through root mean square error, using experimental data from 100 soils three different textural classes, taken UNSODA database. results texture indicate generally produces better estimates all textures; 17% performed better. Keywords: retention, soil, porosity, volume.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

the washback effect of discretepoint vs. integrative tests on the retention of content in knowledge tests

در این پایان نامه تاثیر دو نوع تست جزیی نگر و کلی نگر بر به یادسپاری محتوا ارزیابی شده که نتایج نشان دهندهکارایی تستهای کلی نگر بیشتر از سایر آزمونها است

15 صفحه اول

the role of task-based techniques on the acquisition of english language structures by the intermediate efl students

this study examines the effetivenss of task-based activities in helping students learn english language structures for a better communication. initially, a michigan test was administered to the two groups of 52 students majoring in english at the allameh ghotb -e- ravandi university to ensure their homogeneity. the students scores on the grammar part of this test were also regarded as their pre...

15 صفحه اول

Estimation of Water Retention Curve for Unsaturated Fine Soils

In order to obtain the soil water retention curve of an unsaturated soil which is defined as the relationship between water content and suction, extensive laboratory tests are essential. These laboratory tests are usually costly and time consuming. Moreover, for most practical problems, it has been found that approximate unsaturated soil properties are adequate for analysis. Thus, empirical pro...

متن کامل

the effect of using model essays on the develpment of writing proficiency of iranina pre-intermediate efl learners

abstract the present study was conducted to investigate the effect of using model essays on the development of writing proficiency of iranian pre-intermediate efl learners. to fulfill the purpose of the study, 55 pre- intermediate learners of parsa language institute were chosen by means of administering proficiency test. based on the results of the pretest, two matched groups, one as the expe...

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Dyna

سال: 2023

ISSN: ['2254-2833']

DOI: https://doi.org/10.6036/es10775