水利学报Issue(10)：1231-1238,1246,9.DOI:10.13243/j.cnki.slxb.2014.10.012
管袋坝芯砂体沿袋间接缝流失的试验研究
Experimental research on core sand losses through seam between tubes of geotube dam
摘要
Abstract
Combining laboratory model tests and image analysis, a study on the damage of geotube dam and sand losses through the seam between tubes under the action of unidirectional flow is illuminated in this paper. In connection with the characteristics of particle motion and changes of hydrodynamics, the way of sand losses is illustrated, which include two modes, the groove mode and the full-face integral moving mode. The instable region in sand box which used to simulate the dam core is explored. It is shown that the instable region in sand box concentrates in the inverted cone area above the sand box export. The fea⁃tures of particles transport in pipeline which used to simulate seam between tubes and features of the trench formation are analyzed in detail, and it is found that the motion path of particles in the pipeline concentrates in its surface area. The interaction between particles and water exists throughout the process of damage and core sand losses. Meanwhile,the spatial distribution characteristics of different particles are an⁃alyzed in the transport process in pipeline.关键词
管袋坝/芯砂体/袋间接缝/输移过程/试验研究Key words
geotube dam/core sand/seam between tubes/transport process/experimental research分类
建筑与水利引用本文复制引用
蔚成亮,束一鸣,曹明杰,王小东..管袋坝芯砂体沿袋间接缝流失的试验研究[J].水利学报,2014,(10):1231-1238,1246,9.基金项目
国家自然科学基金资助项目（51179065）；国家科技支撑计划课题 （）
