土质边坡新型生态防护结构的研究

发布时间：2018-05-17 14:27

本文选题：木条式 + 短管式　；参考：《长沙理工大学》2013年硕士论文

【摘要】：随着环境问题的日益凸显，同时具备工程防护和环境生态效应特点的新型边坡防护技术引起人们的广泛关注。根据出现的这一问题，现在需要一种既可有效防治雨水冲刷，以及低成本、易施工，不影响植物的种植，，又具有维护周边环境及生态平衡，而且能够有效防止边坡滑坡的新型技术。针对这个问题，本文着重研究两种新型的土质边坡生态防护结构：本文采用试验方法确定木条式边坡生态防护结构的最佳布置。通过室内抗冲刷模型的试验对比，得出采用本文所述的抗冲刷性木条生态防护边坡较未采取任何防护形式的边坡能更加有效地减小降雨对边坡的冲刷。本文通过多组试验对比分析木条式生态防护结构对边坡雨水冲刷的影响，得出随着木条出露高度的增高，木条式生态防护结构的抗冲刷能力增强，随着木条间间距的减小，木条式生态防护结构的抗冲刷能力也在逐渐提高，但是增高的幅度呈减小趋势。并且通过在现场施工中的具体运用，进一步验证了木条式边坡防护的可操作性。本文通过室内模型试验，研究了一种短管式的边坡生态防护结构，通过对多种管径的实验对比，采用管径为10cm、15cm、20cm的短管式边坡防护结构的边坡模型比未采用防护措施的在60min内总冲刷量分别降低了75.5%，68.2%、52.9%。从而得出结论：随管径减小边坡的抗冲刷能力明显增大，但是增大的幅度呈减小趋势。由防冲刷能力和经济效应综合考虑，得出了一个管径的最优值。本文对木条式边坡生态防护结构和短管式生态防护结构在径流作用下进行了对比，得出结论：采用木条式边坡防护结构和短管式边坡防护结构的边坡模型比未采用防护措施的单位时间冲刷量降低最大为38.9%和56.7%。
[Abstract]:With the increasingly prominent environmental problems, the new slope protection technology with the characteristics of engineering protection and environmental ecological effects has attracted wide attention. Based on this emerging problem, there is now a need for a system that can effectively prevent and control Rain Water scour, as well as low cost, easy construction, without affecting plant cultivation, and has the ability to maintain the surrounding environment and ecological balance. And can effectively prevent slope landslide of the new technology. In view of this problem, this paper focuses on two new types of soil slope ecological protection structure: In this paper, the optimum arrangement of ecological protection structure of wooden slope is determined by test method. Through the comparison of indoor anti-scour model, it is concluded that the slope with the ecological protection of the anti-scour wood strip mentioned in this paper can reduce the erosion of the slope more effectively than the slope without any form of protection. In this paper, the effects of wood strip ecological protection structure on slope Rain Water scour are compared and analyzed through many experiments. It is concluded that with the increase of the height of wood strip exposure, the anti-scour ability of wood strip ecological protection structure increases, and with the decrease of the space between wood strips, the anti-erosion ability of the wood strip ecological protection structure increases with the increase of the height of the wood strip. The scour resistance ability of wood strip ecological protection structure is also increasing, but the increasing range is decreasing. And through the concrete application in the field construction, it further verifies the operability of the wooden slope protection. In this paper, a short-pipe slope ecological protection structure is studied through indoor model test. The total scour of the short pipe slope with the diameter of 10 cm ~ (15) cm ~ (20) cm is reduced by 75.5% ~ 68.2% and 52.9%, respectively, compared with that of the one without protection measures in 60min. It is concluded that the anti-scour ability of slope increases obviously with the decrease of pipe diameter, but the increasing amplitude shows a decreasing trend. Considering the scour resistance and economic effect, the optimum value of pipe diameter is obtained. This paper compares the ecological protection structure of wooden slope with that of short pipe slope under the action of runoff. It is concluded that the slope model with wooden strip slope protection structure and short pipe slope protection structure can reduce the scour amount per unit time by 38.9% and 56.7% respectively.
【学位授予单位】：长沙理工大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：TU476

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