[1]何忠明,邱 祥,卞汉兵,等.考虑初始渗流场影响的坡积土边坡降雨入渗过程[J].长安大学学报(自然科学版),2017,37(05):39-48.
　HE Zhong-ming,QIU Xiang,BIAN Han-bing,et al.Process of rainfall infiltration of residual slope considering the effect on initial seepage field[J].Journal of Chang’an University (Natural Science Edition),2017,37(05):39-48.
点击复制

考虑初始渗流场影响的坡积土边坡降雨入渗过程()
分享到：

长安大学学报（自然科学版）[ISSN:1006-6977/CN:61-1281/TN]

卷:
第37卷
期数:
2017年05期
页码:
39-48
栏目:
道路工程
出版日期:
2017-09-30

文章信息/Info

Title:
Process of rainfall infiltration of residual slope considering the effect on initial seepage field
作者:
何忠明; 邱 祥; 卞汉兵; 曾 铃
1. 长沙理工大学 特殊环境道路工程湖南省重点实验室，湖南 长沙 410004； 2. 长沙理工大学 交通运输工程学院，湖南 长沙 410004；3. 洛林大学 微观结构与材料力学实验室，洛林 梅斯 57070；4. 长沙理工大学 土木与建筑学院，湖南 长沙 410004
Author(s):
HE Zhong-ming;  QIU Xiang;  BIAN Han-bing;  ZENG Ling
1. Key Laboratory of Special Environment Road Engineering of Hunan Province， Changsha University of Science & Technology, Changsha 410004, Hunan, China; 2. School of Traffic and Transportation Engineering, Changsha University of Science & Technology, Changsha 410004, Hunan, China; 3. Laboratory for the Study of Microstructures and Materials Mechanics, University of Lorraine, Metz 57070, Lorraine, France
关键词:
道路工程; 暂态饱和区; 初始渗流场; 降雨入渗; 孔隙水压力; 含水率
Keywords:
road engineering;  transient saturated zone;  initial seepage field;  rainfall infiltration;  pore water pressure;  water content
分类号:
U417.2
文献标志码:
A
摘要:
为了研究初始渗流场的分布对坡积土边坡降雨入渗的影响,基于饱和非饱和渗流计算原理，采用能同时考虑饱和渗流与非饱和渗流的有限元数值模拟方法，分别对4种初始渗流场影响下边坡的降雨入渗过程进行了模拟计算。研究结果表明：降雨期间，入渗影响区内孔隙水压力、含水率的响应时间、达到暂态饱和区的时间与距坡面的距离成反比，进入暂态饱和区的长度及增大幅度与降雨强度成正比；降雨停止后，暂态饱和区内孔隙水压力、含水率消散所需时间与降雨强度成正比，入渗影响区与暂态饱和区之间孔隙水压力、含水率先增大后缓慢降低，入渗影响区外孔隙水压力、含水率保持不变；降雨引起边坡内部孔隙水压力及含水率的增大，增大幅度与降雨强度呈正比例关系，在降雨强度相同的条件下，初始基质吸力越大，雨水入渗难度越大；在最大初始基质吸力相同，而初始渗流场的分布形式不同时，初始渗流场水平等值分布的边坡更不易于雨水入渗；降雨过程中，暂态饱和区出现时间、深度及面积与降雨强度成正比，降雨停止后，暂态饱和区深度及面积逐渐消散，边坡内部孔隙水压力、含水率、暂态饱和区的分布与降雨强度、初始渗流场最大基质吸力以及分布形式密切相关，选择合适的初始渗流场是进行边坡降雨入渗过程研究的前提条件。
Abstract:
In order to study the influence of initial seepage field distribution on rainfall infiltration of residual slope. Based on the theory of saturated unsaturated seepage, and adopting by finite element numerical simulation method which can simultaneously consider saturated seepage and unsaturated seepage, the infiltration process of slope under the influence of four initial seepage fields is simulated, respectively. The results show that during rainfall, infiltration zone pore water pressure, the response time of moisture content, and time to reach transient saturated zone is inversely proportional to the distance from the slope, while the length of the transient saturated zone and the rate of increase are proportional to the intensity of the rainfall. After the rain, transient saturated zone pore water pressure and the time required for the dissipation of water content are proportional to the intensity of rainfall. Pore water pressure and water content between infiltration affected zone and transient saturated zone increase firstly and then decrease slowly. Water pressure and water rates remain unchanged outside the infiltration effect zone. Rain will cause the increase of pore water pressure and moisture content of in side slope, and its increase magnitude is directly proportional to rainfall intensity. Under the same condition of rainfall intensity, the greater the initial matric suction, the more difficult the rainwater infiltration. Under the same maximum initial matric suction and the different distribution of initial seepage field, the rain is harder infiltrating to the slope whose initial seepage field is horizontal contour distribution. During rainfall, the appeared time, depth and area is proportional to rainfall intensity. After the rain, depth and area of transient saturated zone gradually dissipate. Pore water pressure, water content and distribution of transient saturated zone of slope are closely related to rainfall intensity, the maximum matrix suction of initial seepage field and the distribution form. The prerequisite for infiltration process of slope rainfall is to select an appropriate initial seepage field.

相似文献/References:

[1]武建民,祝伟,马士让,等.应用加权密切值法评价基质沥青抗老化性能[J].长安大学学报(自然科学版),2012,32(01):0.
[2]张宜洛,袁中山.SMA混合料结构参数的影响因素[J].长安大学学报(自然科学版),2012,32(01):0.
[3]陈璟,袁万杰,郝培文,等.微观指标对沥青热稳定性能的影响[J].长安大学学报(自然科学版),2012,32(01):0.
[4]周兴业,刘小滔,王旭东,等.基于轴载谱的沥青路面累计当量轴次换算[J].长安大学学报(自然科学版),2012,32(01):0.
[5]李祖仲,王伯禹,陈拴发,等.轴载对复合式路面应力吸收层荷载应力的影响[J].长安大学学报(自然科学版),2012,32(01):0.
[6]关博文,刘开平,陈拴发,等.水镁石纤维路面混凝土路用性能[J].长安大学学报(自然科学版),2012,32(01):0.
[7]翁效林,王玮,张留俊,等.拓宽路基荷载下管桩复合地基沉降变形模式[J].长安大学学报(自然科学版),2012,32(01):0.
[8]穆柯,王选仓,柳志军,等.基于非饱和渗流原理的路基含水率预估[J].长安大学学报(自然科学版),2012,32(01):0.
[9]李振霞,陈渊召.不同类型半刚性基层材料性能的试验与分析[J].长安大学学报(自然科学版),2012,32(01):0.
[10]马 骉,马 晋,周宇鹏.沥青混合料降温收缩断裂特性[J].长安大学学报(自然科学版),2012,32(03):1.
　MA Biao,MA Jin,ZHOU Yu-peng.Cooling shrinkage fracture characteristic of asphalt mixture[J].Journal of Chang’an University (Natural Science Edition),2012,32(05):1.

更新日期/Last Update: 2017-10-16