陕北黄土地区干线公路排水技术研究

发布时间：2018-10-14 12:32

【摘要】：陕北黄土地区具有独特的地形地貌、地质、气候条件,是公路水毁多发区域,每年因公路水毁带来了巨大的经济损失。而设置完善合理的路基排水系统可以有效地减少公路水毁的发生,由于各种原因,现有的路基排水系统存在许多不合理之处,不能完全满足区域排水的要求。因此对陕北黄土地区干线公路排水技术进行研究,对于提高路基排水系统的合理性,促进路基排水系统功能的发挥,减少区域内公路水毁,延长道路的使用寿命,具有重要的意义。在总结国内外公路排水技术研究的基础上,通过查阅资料与实地调研,总结分析了陕北黄土地区的地质环境条件、气候条件及其对路基排水系统的影响。以陕西省榆林境内S302、S206、G307的路基排水系统为依托工程,进行了实地调研,归纳总结了边沟、急流槽、截水沟、涵洞等排水设施存在的问题并对其原因进行了分析。基于模糊数学理论,建立了路基排水系统评价模型,并经实例验证了模型的合理性。在上述研究的基础上,结合陕北黄土地区特点以及排水设计的理论,总结归纳了适合陕北黄土地区排水设计的原则、步骤、内容、要点,可为陕北黄土地区的排水设计提供技术指导。提出了排水标准化设计的方法,计算得出了陕北黄土地区边坡排水设施的尺寸表,在已知坡面径流长度和汇水面积的情况下,通过查取尺寸表,便可获取排水设施的尺寸,大大减少了边坡排水设计的随意性及工作量。基于陕北黄土地区公路排水的重要性,经过研究,陕北黄土地区路基排水系统应做到在勘察阶段重视资料收集,设计阶段转变设计思路,施工阶段严控质量,养护阶段加大投入,并详细论述了各阶段应采取的促进路基排水系统功能发挥、减少路基排水系统病害的措施。
[Abstract]:Loess region in northern Shaanxi Province is characterized by special landform, geology and climate conditions. It is a frequent area of highway water destruction, which brings huge economic losses every year because of highway water damage. The establishment of a sound and reasonable subgrade drainage system can effectively reduce the occurrence of highway water damage, because of various reasons, the existing subgrade drainage system has many unreasonable points, which can not fully meet the requirements of regional drainage. Therefore, the study on drainage technology of trunk highway in loess region of northern Shaanxi province can improve the rationality of subgrade drainage system, promote the function of subgrade drainage system, reduce the damage of highway in the region, and prolong the service life of road. It is of great significance. On the basis of summing up the research of highway drainage technology at home and abroad, the geological and environmental conditions, climatic conditions and their effects on subgrade drainage system in loess region of northern Shaanxi are summarized and analyzed through consulting data and field investigation. Based on the subgrade drainage system of S302S206G307 in Yulin, Shaanxi Province, this paper has carried out field investigation and summarized the problems existing in the drainage facilities such as edge ditch, jet channel, intercepting ditch, culvert and so on, and analyzed its causes. Based on the theory of fuzzy mathematics, the evaluation model of subgrade drainage system is established, and the rationality of the model is verified by an example. On the basis of the above research, combined with the characteristics of loess region in northern Shaanxi and the theory of drainage design, the principles, steps, contents and main points of drainage design suitable for loess region in northern Shaanxi are summarized. It can provide technical guidance for drainage design in loess region of northern Shaanxi. The method of drainage standardization design is put forward, and the dimension table of slope drainage facilities in loess region of northern Shaanxi is calculated. When the runoff length and catchment area are known, the dimensions of drainage facilities can be obtained by checking the size tables. It greatly reduces the randomness and workload of slope drainage design. Based on the importance of highway drainage in loess region of northern Shaanxi, the subgrade drainage system in loess area of northern Shaanxi should pay attention to data collection, change design ideas and control quality in construction stage. The measures of promoting the function of subgrade drainage system and reducing the disease of subgrade drainage system are discussed in detail.
【学位授予单位】：长安大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：U417.3

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