%0 Journal Article
%T CONSTITUTIVE RELATIONS OF UNSATURATED SEEPAGE FLOW IN FRACTURED ROCK MASSES<br>裂隙岩体非饱和渗流本构关系
%A Wang Huiming
%A Wang Enzhi
%A Sun Yi
%A <br>王慧明
%A 王恩志
%A 孙役
%J 岩石力学与工程学报
%D 2003
%I 
%X Based on the numerical simulation of two dimensional unsaturated flow in a single fracture with the continuum approach,an evaluation on the application of Van Genuchten(VG) model and Brooks-Corey(BC) model in fractured rock mass is presented and an improved constitutive relation model is obtained by mainly comparing VG and BC models with the simulated and measured results. Although VG model can reasonably well match the simulated water retention curves,both VG and BC models underestimate relative permeability. Simulation results indicate that an improved model,derived from combination of Brooks-Corey relative permeability-saturation relation and the VG capillary pressure-saturation relation,can generally describe the characteristics of unsaturated flow in fractured rock masses,but the effectiveness of the model in some aspects needs further research,such as the relation curves for higher saturation condition.
%K hydrogeology
%K fractured rock mass
%K unsaturated seepage flow
%K constitutive relation
%K numerical analysis<br>水文地质
%K 岩体裂隙
%K 非饱和渗流
%K 本构关系
%K 数值分析
%K 二维数值模拟
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=D3421FAA1A0A0F0C&jid=35E747D791A1346351AFB523B7FA35CB&aid=2EAA9D38248C2AD8&yid=D43C4A19B2EE3C0A&vid=BC12EA701C895178&iid=59906B3B2830C2C5&sid=59C77779BF483289&eid=E7B46CD86468D9A6&journal_id=1000-6915&journal_name=岩石力学与工程学报&referenced_num=5&reference_num=10