驷马山分洪道深切岭段开挖边坡植被防护

Vegetation Protection of Sima Mountain Deep Excavation Slope of Flood By-pass

根据工程实践和多年的研究分析认为,膨胀土受气候变化影响,易产生吸水膨胀、失水收缩开裂形成胀缩循环,水平渗透性差,边坡失稳发生频繁,仅采取抗滑和削坡减载等常规的工程措施,工程造价高,很难维护边坡的长期稳定性;膨胀土边坡采用植被保护措施,能调节受保护区域的生态小气候和边坡土体的含水量,减少土体受气候变化导致胀缩循环破坏土体强度的影响程度,对促进边坡的长期稳定性起着重要作用,同时也美化了环境。并且选用当地草皮和灌木,工程造价较低。因此,采用膨胀土边坡的植被保护措施,工程效益和生态效益明显,是膨胀土边坡防护有效的辅助措施之一。

Due to the climate impact of expansive soil, easy water swelling, shrinkage and cracking of swell shrink cycle, at the same time, the level of poor permeability etc. Only take the anti slide and slope to reduce load engineering measures, the construction cost is high, it is difficult to maintain the long-term stability of the slope. Vegetation protection measures for slope, can regulate water containing protected microclimate and improving soil area, reduce swelling and shrinkage effeets of cyclic damage affected by climate change, soil stability during long time, to promote the effective slope up to, but also beautify the environment, selection of local grass and shrubs, engineering cost low. The author thinks, vegetation protection measures of expansive soil slope, engineering and ecological benefit is obvious, it is one of the auxiliary measures worthy of reference.