南水北调与水利科技2017，Vol.15Issue(3)：108-112,5.DOI:10.13476/j.cnki.nsbdqk.2017.03.018
落水洞对裂隙-管道介质泉流量衰减过程影响的试验研究
Experimental study on the effects of sinkholes on spring flow attenuation process within fissure-conduit media
摘要
Abstract
The karstic fissures and conduits are the main underground water-storing space and water-conducting channels in Sout hwest China. Sinkholes are important water discharge channels for temporary storage of the surface water in karst area, and are w idely distributed in the Southwest. To study the effects of sinkholes on the spring flow att enuation process is of great im-portance of karst water resources and the st udy of The karst hydrology. A physical model of fissure-conduit medium was set up in this st udy, and was used to simulate the spring flow attenuation process for different cross-sect ion sizes and filling degrees of the sinkhole. The sensitivity of the attenuat ion coeff icient to different factors was explored w ith the attenuation curve. Results of the experiments demonstrat ed that the exponential at tenuation formulation can describe the attenuation process generally, and the att enuation curve can be divided into three phases. The attenuation coefficientof the first phase is much subject to the cross-section size of the sinkhole. The at tenuation coefficient w ill increase as the sinkhole cross-sect ion size decreases, and it has posi-tive correlat ion w ith the f illing degree of sinkholes.关键词
落水洞/裂隙-管道介质/物理模型/泉流量过程Key words
sinkhole/fissure-conduit media/physical model/spring flow process分类
天文与地球科学引用本文复制引用
周玥,束龙仓,方依雯,翟月,王硕,鲁程鹏..落水洞对裂隙-管道介质泉流量衰减过程影响的试验研究[J].南水北调与水利科技,2017,15(3):108-112,5.基金项目
国家自然科学基金(41172203) （41172203）
国家大学生创新创业训练项目(201510294006) National Natural Science Foundation of China (41172203) （201510294006）
The National College Students' Innovation and Entrepreneurship Training Program (201510294006) （201510294006）
