入渗池底部形态变化对入渗速率的影响  

Impacts of Bottom Structure to Infiltration Rate

作　　者：李胜涛[1,2] 杜新强[2] 迟宝明[2,3] 陈斯[4] 毛建业 

机构地区：[1]中国地质调查局水文地质环境地质调查中心,河北保定071051 [2]吉林大学环境与资源学院,吉林长春130026 [3]防灾科技学院,北京101601 [4]湖北省国土资源厅,湖北武汉430071 [5]青海省柴达木综合地质矿产勘查院,青海格尔木816000

出　　处：《人民黄河》2011年第12期61-63,共3页Yellow River

基　　金：国土资源部公益行业科研专项(200911004-5);"十一五"国家科技支撑计划重点项目(2006BAB14B04);吉林大学科学前沿与交叉创新基金资助项目(200903149)

摘　　要：采用室内模拟试验的方法,设计了平坦和起伏两种池底形态,观测了相同回灌条件、不同池底形态情况下,入渗池介质渗透能力的变化规律,研究了入渗池底部形态变化对地下水人工回灌入渗速率的影响。结果表明:连续回灌73 h后,垄沟起伏的池底渗透速率下降至初始值的57%,平坦的池底渗透速率下降到初始值的20%,垄沟起伏的池底形态较平坦的底部形态更好地保持了入渗池的渗透速率。入渗池底部形态的变化有效地控制了悬浮物的沉积规律,进而影响了堵塞产生的部位、时间和程度,从而影响入渗池的渗透速率。To study the impacts of bottom structure to infiltration rate, this paper took infiltration basin as a case and made an indoors simulation experiment. Through comparing observation of different basin bottom structures with similar recharge conditions, an obvious variation rule of infiltration medium was discovered eventually. The results show that infiltration basin with Ridge ＆ Vale （R＆V） bottom keeps more penetrative than that with flat bottom. After 73 hrs infiltration, the infiltration rate of （R＆V） bottom decreases to 57% of original level while that of flat bottom decreases to 20%. As the decrease of infiltration rate results in sedimentation ＆ clogging of suspend solid of granules, the Ridge ＆ Vale bottom influences the location, time and degrees of sedimentation ＆ clogging greatly by making the suspend solid sediments unevenly. Finally, it impacts the infiltration rate.

关 键 词：入渗池 底部形态 渗透速率 地下水人工回灌 

分 类 号：S275[农业科学—农业水土工程]