基于颗粒流理论的层状非均质介质等效渗透系数研究

在评价由于渗流引起的滑坡、塌陷等地质灾害时,由于地层结构的复杂性,导致其渗透系数难以准确获取。文章根据达西定律,利用基于颗粒流理论的数值模拟方法,对地下水流线与层状非均质介质层面成任意角度的情景进行模拟,分别选择地下水流线斜交、垂直和平行层状非均质介质层面等三种工况,定量计算含水层的等效渗透系数,模拟得到的渗透系数和基于等效渗透理论的计算值基本吻合。结果表明:颗粒流模拟方法在求取复杂地质条件下的等效渗透系数时,具有更强的实用性,可为复杂地质条件下工程建设中因渗流导致的灾害等问题的研究提供理论依据和参考。...

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Bibliographic details
Volume: 45
Main Author: 陈小茜;曾斌;王春晖;郑束宁;彭丁茂
Format: Journal Article
Language: Chinese
Place of publication: 中国地质大学(武汉)环境学院,湖北武汉,430074%杭州交通投资建设管理有限公司,浙江杭州,310005%浙江省交通规划设计研究院,浙江杭州,310006 2018
published in: 水文地质工程地质 Vol. 45; no. 2; pp. 7 - 12
Data of publication: 2018
ISSN: 1000-3665
Alternate Title: A study of the equivalent hydraulic conductivity of layered heterogeneous media with the particle flow theory
Classification Codes:
Bibliography: equivalent hydraulic conductivity; Particle Flow Code; seepage flow; layered heterogeneous media
It is difficult to obtain the hydraulic conductivity in the work of evaluating the geological hazards that are caused by seepage flow,such as landslides and collapses,especially under the conditions of complex geological structures. This paper simulates the scenarios in which the streamline is intersected with the layered heterogeneous media at any angle using the Particle Flow Code and Darcy 's Law,considering that the groundwater streamline is parallel,orthogonal or oblique to the layered heterogeneous media. The simulated hydraulic conductivity is in good agreement with the theoretical hydraulic conductivity. In conclusion,we note that the method of the particle flow simulation is more practical in evaluating the equivalent hydraulic conductivity under complicated geological conditions. The results provide a theoretical basis and reference for the seepage destruction problems in engineering construction.
11-2202/
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