灌溉排水学报2013，Vol.32Issue(1)：26-31,6.DOI:10.7631/j.issn.1672-3317.2013.01.007
不同级配砂砾石介质给水度的试验研究
Experimental Study on Specific Yield of the Sandy Gravel Media with Different Gradation
摘要
Abstract
Based on laboratory test on the natural accumulated sandy gravel from the Yellow river riverbed in LiuLin county Shanxi province, in order to improve the storage characteristic of the natural accumulated sandy gravel artificially, on the basis of analyzing water storage characteristics of the natural gradation, the specific yield variation characteristics of the sandy gravel media with the same diameter particle and different diameter particles were researched, and the relation between the specific yield and some feature diameter index which reflected sandy gravel gradation characteristics was established. The results showed that the specific yield of the sandy gravel media with same diameter increased with the growing of average diameter; the relationship between specific yield and average diameter accorded with logarithmic curve; the specific yield was significantly affected by the gradation of sandy gravel. In a certain range the specific yield decreased with the increasing of the uniformity coefficient, then the specific yield increased with the increasing uniformity coefficient when the uniformity coefficient was above one value; a close quadratic multinomial relationship existed between the specific yield and the uniformity coefficient, and it was feasible to predict the specific yield by uniformity coefficient.关键词
给水度/砂砾石介质/级配曲线/特征粒径/不均匀系数Key words
specific yield/ sandy gravel media/ grading curve/ characteristic diameter/ uniformity coefficient分类
天文与地球科学引用本文复制引用
郑毅,樊贵盛,张明斌,邢日县..不同级配砂砾石介质给水度的试验研究[J].灌溉排水学报,2013,32(1):26-31,6.
