【作者】 蒋德松；

【导师】 赵明华；

【作者基本信息】 湖南大学 ， 岩土工程， 2011， 硕士

【摘要】 随着我国高速公路建设飞速发展,最近几十年来,有关高速公路边坡生态防护技术及植物固坡力学分析的理论研究越来越广泛和深入,但由于起步较晚,和欧美、日本一些发达国家还有较大的差距。本论文在参考国内外研究文献的基础上,通过理论分析、室内模拟冲刷试验、现场试验与数值分析等手段对破碎岩质边坡植被防护机理及固土技术进行了研究。首先,通过岩质边坡植物防护力学效应、水文效应与防冲刷作用等探讨植物根系的固土机理,并通过根—土相互作用模型研究植物根系—岩土体受力特性,进而探讨植物根系固土的主要影响因素；其次,通过防冲刷室内试验研究,探讨狗牙根、百喜草、高羊茅、白三叶等草种在不同边坡坡度、不同固土方式与降雨强度条件下的防冲刷性能,同时,将在室内试验基础上进行相应的现场试验,对室内试验结果进行现场验证与对比分析；然后,通过破碎岩质边坡植被固土方法现场试验评价菱形铁丝网和土工格室法两种固土方式在破碎岩质边坡植被防护中的使用效果,对比两者在工程地段的适用状况,同时评价混播草种整体的生长情况,边坡的绿化规律；最后,在现有研究基础上,分别对三维土工网垫、菱形铁网与土工格室固土技术进行固土机理进行分析,并提出相应的设计、施工方法,同时采用数值分析方法对其固土效果进行模拟分析。更多还原

【Abstract】 With the rapid development of China’s highway construction in recent decades, the researches on ecological protection technology of highway slope and mechanics analysis of slope protected by plants theory are more and more widely and deeply done. But due to the study started later, there is much gap with Europe, America, Japan and other developed countries. Based on the domestic and international research literature, the theoretical analysis, simulation washout test, field test, numerical analysis and other means are used to study the vegetation protection mechanism and soil hold technologies of broken rock slope in this paper.Firstly, the soil hold mechanism is discussed through protection mechanics effect and hydrological effect of the rock slope and the flushing prevented action. And the mechanical characteristics between the plant root and rock-soil materials are studied through the root-soil interaction model. The main factors of plant roots holding the soil are than discussed. Second, through the flushing prevented test indoor, the prevent erosion performance of the bermuda grass, bahiagrass, festuca arundinacea and trifolium repens under different slope grade, soil holding method and rainfall intensity is discussed. Meanwhile, the field tests are done based on the laboratory test. And the test results are compared and analyzed. Thirdly, the use effect of diamond barbed wire and geocell is evaluated through the soil holding methods field test of broken rock slope vegetation protection. And the applicable condition of these two methods is analyzed in different engineering section. The growth of the whole grass mixed seeding and the slope greening law is evaluated. Finally, based on the existing research, the soil holding mechanism of the three-dimensional geotechnical net, lozenge iron net and geocell is analyzed. The design, construction method are put forward. And the soil holding effect is simulated and analyzed by the numerical analysis method.更多还原