喻军, 刘松玉, 尹晓辉. 2014: 草本植物对浅埋隧道洞口仰坡防冲刷影响分析. 工程地质学报, 22(s1): 359-364. DOI: 10.13544/j.cnki.jeg.2014.s1.060
    引用本文: 喻军, 刘松玉, 尹晓辉. 2014: 草本植物对浅埋隧道洞口仰坡防冲刷影响分析. 工程地质学报, 22(s1): 359-364. DOI: 10.13544/j.cnki.jeg.2014.s1.060
    Yu Jun, Liu Songyu, Yin Xiaohui. 2014: EFFECT OF THE HERBAGE ON RESISTANT SCOURING OF FRONT SLOPE AT THE ENTRANCE OF SHALLOW TUNNEL. JOURNAL OF ENGINEERING GEOLOGY, 22(s1): 359-364. DOI: 10.13544/j.cnki.jeg.2014.s1.060
    Citation: Yu Jun, Liu Songyu, Yin Xiaohui. 2014: EFFECT OF THE HERBAGE ON RESISTANT SCOURING OF FRONT SLOPE AT THE ENTRANCE OF SHALLOW TUNNEL. JOURNAL OF ENGINEERING GEOLOGY, 22(s1): 359-364. DOI: 10.13544/j.cnki.jeg.2014.s1.060

    草本植物对浅埋隧道洞口仰坡防冲刷影响分析

    EFFECT OF THE HERBAGE ON RESISTANT SCOURING OF FRONT SLOPE AT THE ENTRANCE OF SHALLOW TUNNEL

    • 摘要: 随着环保型隧道洞门理念的提出,实现生态环保隧道设计,以保护隧道洞口仰坡原有生态为主导思想,充分利用植物的根系加固仰坡,然而植物根系的加固、防冲刷机理尚未清晰,有必要进行深入研究。首先调查某隧道南北洞口仰坡有无植物根系对降雨引起的冲刷量的影响,分析植物的加固与防冲刷效果; 然后采用室内试验测定土体的抗剪强度参数,运用有限元强度折减法分析草本植物的加筋护坡作用,评价植物根系对浅层滑坡的抑制作用。发现草本植物在一定程度改善浅层滑坡,降低浅层滑坡的概率,同时具有明显的防冲刷效果,有草本植物的地区,产砂量明显减小。本研究成果能很好地服务于植物护坡的设计与施工,以及仰坡的养护。

       

      Abstract: With the proposal of environment friendly tunnel porch concept and ecological and environmental design, plant roots to improve the stability of slope are used to protect original ecology of slopes. However, it is not clear about the effective and mechanism of reinforcing and resistance scouring from plant roots. Therefore, it is necessary to research deeply the action of slope for roots. In the paper, survey method in-site was conducted to the effect of rainfall on scouring with and without covering plants. The effective of plant is analyzed to resist to scouring. The resistant shearing strengthen parameters were measured by test in the experiment and FEM of reduced -strengthen method was used to simulate the action to reinforce of herbage. And shallow landslide was analyzed and evaluated plants roots. It is found that the plant root improves slide and scouring to its degree, especially in the district of gravel-cobble for least sand. At the same time, it can improve slope slide and decrease the polity according to different plant and soils. The conclusion can provide the reference to similar slope protection of design and construction and the conservation of slope during operation.

       

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