摘要
我国生态护坡理论研究主要集中在生态效益这一方面,对于护坡材料的成型机理、植生机理、护坡机理等研究不多,理论远远落后于防护技术应用的发展。本文采用科学软件CHASM(The combined hydrology and stability model)研究植被类型、降雨、填土材料内摩擦角等因素对边坡稳定性的影响,探究生态护坡工程的机理。不同的植被类型对边坡稳定性的影响程度不同。植草提高边坡安全系数的效果比植树强,草木结合种植的效果最好。降雨强度不同,植被对安全系数的影响也不同。当降雨作用没有超过植被的调节能力时,边坡安全系数基本在提高;反之,边坡安全系数会出现明显的下降。植被对不同强度填料的边坡影响程度基本类似。
In China, the theory on ecological protection, is mainly discussed about the ecological benefit, there is a limited research on the modeling mechanism of material, vegetation mechanism and slope protection mechanism far behind the practical application. A software CHASM is used to analyze the influence of vegetation types, rainfall, and strength of soil on the stability of ecological slope for investigating the mechanism of ecological slope. The safety factors of slope are different depending on the types of vegetation, grass planting on the slope is more effective than tree planting. Especially in slope when the combined grass planting and tree planting gives the best result. The rainfall of different intensity will affect the slope stability variously. When rainfall action doesn＇ t exceed the adjustment capacity of vegetation, the factor of safety increases, however, reduces significantly when the rainfall exceeds the adjustment capacity. Vegetation has the similar effect on the slopes with different materials.
出处
《地下空间与工程学报》
CSCD
北大核心
2009年第A02期1837-1841,共5页
Chinese Journal of Underground Space and Engineering
基金
国家自然科学基金资助项目(40872180)
上海市重点学科建设资助项目(B208)
