边坡内排水系统对雨水入渗影响的试验研究

发布时间：2018-07-10 02:18

本文选题：边坡 + 雨水入渗　；参考：《长沙理工大学》2015年硕士论文

【摘要】：近几年来,随着高速公路的兴建,其要求也越来越高,对于高速公路边坡来说,边坡的防排水工作的实施是一个重头戏。而且现在边坡建设不仅要求施工质量好、防水排水能力强,还要求边坡防排水设施能与大自然相互衔接,融合为一体,在高速公路上形成一条绿色的屏障。国内外经常在边坡表面设置一些排水设施,而且这些排水设施因长年暴露于环境中,不可避免的发生一些破坏,而且损坏程度不可小觑。所以提供了一个思考点,即是否把排水设施设置在土体内部,把防护作用和排水作用结合在一起,这样不仅能起到防排水作用,而且又能对自然界起到有利的影响,把生态防排水系统应用于高速公路上来。本文介绍了几种新型的边坡内排水系统,能减少入侵土体浅层内部的水分,以达到维持土坡浅层稳定性及生态美观性的要求。首先对此问题的研究查阅了大量的相关文献,了解到边坡排水的一些方法,认识到防排水工程中存在一些问题及新型防排水系统的必要性。在此问题的基础上,本文研究了几种在边坡内部设置内排水系统减少雨水冲刷和雨水入渗的方法,并通过室内试验证了这些排水方法的效果,进而通过相互之间对比,得出内排水方法的特点:(1)塑料排水板及水平菱形网排水系统可以横向进行疏水,其垂直方向也能阻碍水汽在重力作用下的迁移,而复合菱形排水网系统能起到隔离作用,能更好防治雨水往土体内部入渗,排水效果更好。(2)这几种边坡内排水系统把边坡防护系统和排水系统结合到了一起,在土坡内部能够起到加筋作用,起到良好的固土效应,而且又能发挥其排水效果。(3)塑料排水板、复合菱形排水网、水平菱形排水网内排水系统具有整体美观性,在边坡内部设有这种排水系统,不影响边坡表面的植草防护,不仅如此,它还能为植物根系提供水分的补给,具有生态性。这种具有内排水系统在实际工程施工中具有借鉴性,为创造一种更优化更完善的边坡防排水系统作为一个思考。
[Abstract]:In recent years, with the construction of expressway, its requirements are becoming higher and higher. For highway slope, the implementation of slope drainage prevention and drainage work is an important play. And now slope construction not only requires good construction quality, strong waterproof and drainage capacity, but also requires slope waterproof and drainage facilities can be connected with nature and integrated into one, forming a green barrier on the highway. At home and abroad, some drainage facilities are often installed on the slope surface, and these drainage facilities are inevitably damaged because they are exposed to the environment for many years, and the degree of damage is not to be underestimated. So it provides a point to think about, that is, whether to set up the drainage facilities inside the soil, and to combine the protective effect with the drainage function, which can not only play the role of water prevention and drainage, but also have a beneficial effect on the nature. The ecological waterproofing and drainage system is applied to the expressway. In this paper, several new types of slope drainage systems are introduced, which can reduce the moisture content in the shallow layer of the intrusive soil, and meet the requirements of maintaining the stability of the shallow layer of the slope and the ecological beauty of the slope. First of all, a large number of related documents have been consulted, some methods of slope drainage have been known, and some problems in waterproofing and drainage engineering and the necessity of new drainage system have been recognized. On the basis of this problem, this paper studies several methods of reducing Rain Water erosion and Rain Water infiltration by setting internal drainage system inside the slope, and verifies the effect of these drainage methods through laboratory tests, and then compares them with each other. The characteristics of internal drainage methods are obtained as follows: (1) plastic drainage plates and horizontal rhombic net drainage systems can drain water horizontally, and their vertical direction can also hinder the migration of water vapor under the action of gravity, while the compound rhombic drainage net system can act as an isolator. It can better prevent the infiltration of Rain Water into the soil, and the drainage effect is better. (2) the slope protection system and the drainage system are combined together, which can play a reinforced role in the interior of the soil slope and play a good role in the consolidation of soil. And it can also play its drainage effect. (3) plastic drainage plate, compound rhombic drainage net, horizontal rhomboid drainage net internal drainage system has the overall beauty, this kind of drainage system is installed inside the slope, does not affect the slope surface grass protection, Not only that, it can also provide water supply for plant roots, with ecological. This kind of internal drainage system can be used for reference in actual engineering construction, so as to create a more optimized and more perfect slope drainage system as a reflection.
【学位授予单位】：长沙理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U417.3

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