大降雨强度下雨水入渗规律研究.pdf

2003 5 Ge technical Engineering T echnique N . 5 2003 : 2003) 大降雨强度下雨水入渗规律研究 张士林 ( , 116023) GreenAmpt ,GreenAmpt , GreenAmpt , , GreenAmpt ; ; ; ; T U 99 1. 114; T U 991. 32 The Research Of Infiltrating Regulation Under Rainstorm Abstract Basing n GreenAmpt M del, and taking the smallangle sl pe made f dry s il that acc rding with GreenAmpt infiltrating m del as bject, its infiltrating regulati n under heavy raining intensity is studied. It puts f r w ard the infilt rat ing f rmula including gas pressure making use f GreenAmpt M del, and gets the real infiltrating f r mulas under the c nstant raining intensity. Then it c mbines w ith the verland fl w f rmulas t get the numerical m d eling f infiltrati n and verland fl w under heavy raining intensity. Key words GreenAmpt M del; infiltrat i n; gas pressure; verland fl w ing; numerical m deling 1 GreenAmpt , i(t) t , ! 0, i(t) !K () , 0 , mm/ min z cm/ d t i(t) , , , K () q(0, t) 0 0 K , K K (K ) , 0 0 s s i(t) = q(0, t) = - D() + K () z z = 0 , GreenAmpt ( 1) 1911 , GreenAmpt z , , , (1) GreenAmpt GreenAmpt i t , , ,