LI Xi-an,CHEN Wen-jun,DENG Ya-hong,et al.Formula Derivation of the Critical Condition of Sub-Ground Erosion[J].Research of Soil and Water Conservation,2010,17(05):217-221.
渗流潜蚀作用临界发生条件的推导
- Title:
- Formula Derivation of the Critical Condition of Sub-Ground Erosion
- Keywords:
- sub-ground erosion; piping; seepage compression; soil flowing; soil bursting; ciritical condition
- 分类号:
- TV411.91;S157
- 摘要:
- 为了进一步深入了解渗流潜蚀作用的发生条件及其机理，首先在对国内外文献进行广泛调研的基础上，将“管涌”、“渗透压密”、“流土”、“突涌”等几种最为常见的渗流潜蚀作用的概念模型进行了严格界定，将流土及突涌发生时的渗流方向扩展到任意方向。其次，通过受力分析，利用解析方法推导了“管涌”、“渗透压密”、“流土”、“突涌”等渗流潜蚀作用发生的临界条件，并对其他地下径流作用下发生的潜蚀作用进行了讨论。最后，指出由于渗流潜蚀作用发生环境的多样性，对其发生临界条件的判断应就其具体受力情况来具体分析。根据渗流潜蚀作用临界发生条件推导得出的相关结果，为潜蚀作用的进一步研究提供了理论基础。
- Abstract:
- In order to further understand the mechanism and critical condition of sub-ground erosion, in this paper, firstly, the conceptual model of ‘piping’, ‘seepage compression’, ‘soil flowing’, ‘soil bursting’ were accuratelly definated on the bases of extensive literatures research. In the defination, the flow direction are extended to all directions for the defination of ‘soil flowing’ and ‘soil bursting’. Secondly, on the basis of force analysis, the formula discribing the critical condition of sub-ground erosion were drivated by the analytical method. Finally, the author suggested that the specific circumstances should be considered before the confirming of ciritical conditions. The work in this paper formed a theoretical basis for further study about sub-ground erosion.
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备注/Memo
收稿日期:2010-3-29;改回日期:2006-3-3。
基金项目:国家自然科学基金面上项目（40772182）
作者简介:李喜安（1968- ），男，陕西丹凤人，副教授，博士后，主要从事工程地质与地质灾害方面的教学与科研工作。E-mail：dclixa@chd.edu.cn
通讯作者:贺涛（1980- ），男，江西永新人，博士，主要从事生态需水与用水方面的研究。