To solve the environmental protection issue of carbonaceous rock slope, the failure mechanism of carbonaceous rock slope and the protection mechanism of vegetation concrete are analyzed based on the engineering characteristics of carbonaceous rock and vegetation concrete. Therefore, the field test of vegetation concrete was carried out to obtain the optimal dosage of vegetation concrete greening additive. The application of environmental protection technology of vegetation concrete on carbonaceous rock slope is applied in slope engineering of Hebai highway, and the change law of soil fertility was analyzed to verify the effect of ecological protection. The results show that the protection mechanism of vegetation concrete slope protection technology is mainly categorized into two groups, namely, the surface sealing effect of vegetation concrete substrate in the early stage and the plant ecological protection effect in the later stage. The experiment results show that the optimum dosage of green additive for vegetation concrete is ranging from 30 kg/m³ to 40 kg/m³. According to the field application, within one year after the construction of vegetation concrete, the contents of available phosphorus, potassium, and organic matter increased by 70.2%, 24.9%, and 76.8%, respectively. Moreover, the content of alkali hydrolyzed nitrogen decreased by 44.8% and bulk density by 17.4%; the content of total phosphorus changed little. After 60 days of construction, the vegetation coverage rate of the slope can reach more than 95% and there is no obvious soil erosion phenomenon after three times of heavy rainfall.

中文翻译：

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碳质岩边坡喷洒植被混凝土生态防护技术试验研究与应用

为解决碳质岩边坡的环境保护问题，根据碳质岩和植被混凝土的工程特点，分析了碳质岩边坡的破坏机理和植被混凝土的防护机理。为此，对植被混凝土进行了现场试验，以获得植被混凝土绿化添加剂的最佳用量。将植被混凝土环保技术在碳质岩边坡上的应用应用于河白公路边坡工程，分析土壤肥力变化规律，验证生态保护效果。结果表明，植被混凝土护坡技术的保护机理主要分为两类，即：早期植被混凝土基质的表面封闭作用和后期植物生态保护作用。试验结果表明，植被混凝土绿色外加剂的最佳用量为30 kg/m³至 40 公斤/米³。根据现场应用，植被混凝土施工后一年内，速效磷、速效钾、有机质含量分别提高了70.2%、24.9%和76.8%。碱解氮含量降低44.8%，容重降低17.4%；总磷含量变化不大。施工60天后，坡面植被覆盖率可达95%以上，3次强降雨后无明显水土流失现象。