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厚层基材配比是厚层基材喷射植被护坡技术的关键问题，为了对秦岭山区矿山岩质边坡进行生态重建，通过设计正交试验简化基质筛选过程。选取水泥含量、草炭含量、复合肥含量和保水剂含量作为正交试验的试验因素，植物出苗率和总生物量作为考察指标，分析各因素对植物出苗率和总生物量的影响程度，在此基础上归纳出适宜黑麦草生长的基材配比。试验数据分析表明，各因素对出苗率的影响程度为水泥>复合肥>保水剂>草炭，对总生物量的影响程度为草炭>水泥>保水剂>复合肥，综合分析确定最优基材配比为水泥含量9%、草炭含量8%、复合肥含量0.15%～0.3%、保水剂含量0.3%～0.7%。最后通过室内抗冲刷试验验证基材喷播初期的抗冲刷特性，表明该基材配比能够满足秦岭山区岩质边坡生态复绿工程需求，为厚层基材基质开发提供新思路。
Abstract：The ratio of the thick base material is the key problem of thick base material spraying vegetation slope protection technology, to carry out ecological reconstruction on the rock slope of mines in the Qinling Mountains, the orthogonal test is designed to simplify the matrix screening process.The cement content, peat content, compound fertilizer content, and water-retaining agent content were selected as test factors, and the plant emergence rate and total biomass were used as investigation indicators to analyze the influence of various factors on the plant emergence rate and total biomass.On this basis, the base material ratio suitable for the growth of ryegrass was summarized.The analysis of test data shows that the influence degree of each factor on the emergence rate is cement>compound fertilizer>water retaining agent>peat, and the influence degree of each factor on the total biomass is peat>cement>water retaining agent>compound fertilizer.Through comprehensive analysis, the optimal base material ratio is determined to be 9% cement, 8% peat, 0.15%—0.3% compound fertilizer, and 0.3%—0.7% water retaining agent.At last, the indoor anti-erosion test was carried out to verify the anti-erosion characteristics of the base material at the initial stage of spraying, which indicated that the base material ratio could meet the actual engineering needs of the ecological restoration project of the rock slope in Qinling mountain, and provided a reference for the development of thick layer base material.
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基本信息:
中图分类号:X322;TD167
引用信息:
[1]徐翔,宋飞,麻若楠,等.秦岭山区矿山岩质边坡生态重建基材配比研究[J].有色金属(矿山部分),2023,75(02):48-54.
基金信息:
国家自然科学基金资助项目(41977228); 陕西省重点研发计划项目(2022SF335、2022SF338)
2023-03-25
2023-03-25