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在无法改变公路道路的情况下,发生滑坡现象,很多情况下是只有不惜巨资对坡面进行改造,特别是在易发生滑坡的路段进行加固,以前的办法则是水泥加钢筋,针对上诉情况,很明显,钢筋加水泥的保坡方式已不被人们所接受,因此就必须寻找一种全新的方法进行护破,再加上人们对自然的渴望,于是便把生态与护坡联系到一起,让植被代替水泥,让根系代替钢筋。然后再进一步的研究,列举出生态护坡的可行性,首先生态护坡能依靠植物良好的根系而使护坡具有一定的固土和抗冲能力,同时生态护坡具有造价低、能美化环境的独特效果,在国外已得到了广泛的应用。采用植物防护,增加植被面积,减少地表径流,可从根本上减少路基的水土流失。植物覆盖对于地表径流和水土冲刷有极大的减缓作用。枝叶繁茂的树冠能够截留一部分降水量,庞大的根系能直接吸收和涵蓄一部分水分,还可稳定地表土层。而没有植被覆盖的地方,降水量全部落在地表面,形成径流,造成水土侵蚀和冲刷。植被的根系能与土层密切地结合,根系与根系的盘根错节,使地表层土壤形成不同深度的、牢固的稳定层,从而有效地稳定土层,固定沟坡,阻挡冲刷和塌陷,有机械的防护作用。而且还能恢复自然,保证交通安全,改善道路环境,由于道路具有带状分布,表土缺乏,土质条件差,边坡陡峭,小气候复杂等特点,因此其维护不同于其他公园里的植被。
Landslides can not be changed if the roads are not changed. In many cases, only the huge amount of money is required to upgrade the slopes, especially in the landslide-prone sections. Previously, cement plus rebar was used. According to the appeals Obviously, the slope protection method of reinforced concrete and cement has not been accepted by people. Therefore, it is necessary to find a brand-new way to carry out the protection and the people’s desire for nature. Therefore, the ecology and slope protection are linked together, Let vegetation instead of cement, so that the roots instead of steel. And then further study, enumerating the feasibility of ecological slope protection, first of all, ecological slope protection can rely on the good root system of plants to make the slope protection have some soil and anti-impact ability, while ecological slope protection with low cost, can beautify the environment unique effect, In foreign countries has been widely used. Plant protection, increase the vegetation area, reduce surface runoff, can fundamentally reduce the soil and water loss of subgrade. Plant cover has greatly slowed the runoff and soil erosion. Branches lush crown can capture part of the precipitation, a large root can directly absorb and contain part of the water, but also stable topsoil. Where there is no vegetation cover, precipitation falls on the ground surface, forming runoff, resulting in soil erosion and erosion. The root system of the vegetation can be closely combined with the soil layer. The roots and roots of the root system are staggering. The surface soil forms stable layers with different depths, so as to effectively stabilize the soil layer, stabilize the slope and prevent the erosion and collapse. The mechanical Protective effect. But also to restore the natural, to ensure traffic safety, improve the road environment, the road has a ribbon distribution, lack of topsoil, poor soil conditions, steep slopes, microclimate and other characteristics, so the maintenance is different from the vegetation in other parks.