水利水电科技进展2011，Vol.31Issue(6)：19-22,4.DOI:10.3880/j.issn.1006-7647.2011.06.006
淤堵试验中“驼峰”形k～t曲线形成的影响因素分析
Factors for generation of hump-type k-t curve in dogging tests
摘要
Abstract
With regard to the hump-type curve of the permeability coefficient k and time t generated in the clogging tests on geotextile, the causes, the primary and secondary factors and their sensitivities were investigated by means of the common soil column model and the modified long cylinder model. Hie results show that the hump phenomenon generated at the initial phase of the tests is caused by the irregular motion of the soil particles under the water pressure. Hie motion quantity of the fine soil particles mainly occurs at both ends of the samples. The magnitude, occurrence and duration of the hump peak are influenced by the water head, dry density and particle size distribution of soils, among which, the water head is the most significant factor.关键词
土工织物/渗透系数/淤堵试验/影响因素Key words
geotextile/ permeability coefficient/ clogging test/ influencing factor分类
建筑与水利引用本文复制引用
付长生,赵坚,沈振中,杭学军,张松..淤堵试验中“驼峰”形k～t曲线形成的影响因素分析[J].水利水电科技进展,2011,31(6):19-22,4.基金项目
教育部博士点基金(200802940012) （200802940012）
江苏省水利厅科技创新项目(2009022) （2009022）
