崩壁治理中几种稳定复绿技术对比研究

发布时间：2017-12-28 12:23

  本文关键词：崩壁治理中几种稳定复绿技术对比研究　出处：《水土保持学报》2016年02期 　论文类型：期刊论文

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【摘要】：为探讨边坡治理常见工程技术与乡土植物不同组合措施对崩壁稳定复绿效果,筛选崩壁稳定复绿最优组合措施。采用崩壁人工径流小区定位观测试验,布置了9种不同组合措施:细沟喷播植草(灌)(RSS)、小台阶细沟喷播植草(灌)(SSR)、小台阶三维网喷播植草(灌)(SST)、三维网喷播植草(灌)(TDM)、土工格网喷播植草(灌)(GEG)、穴植草(灌)(HOP)、细沟喷播植灌木(RPS)、细沟喷播植牧草(RPG)和对照处理(CON)。乡土植物为百喜草(Paspalum notatum Alain ex Flüggé)、狗牙根(Cynodon dactylon(L.)Pers.)、山毛豆(Oxytropis hirta Bunge)与紫穗槐(Amorpha fruticosa L.)。结果表明:(1)崩壁土壤含水量与前期累积降雨量间呈正相关线性关系;崩壁稳定系数随含水量呈先增后减变化趋势,其中处理TDM稳定系数最大,CON稳定系数最小且显著低于其余各处理(P=0.05)。(2)处理TDM和CON崩壁植被覆盖度分别为最大和最小,且显著高于和低于其余各处理(P=0.05)。(3)处理CON崩壁径流及侵蚀量均显著高于其余各处理(P=0.05);RPS和RPG处理崩壁径流侵蚀量小于CON处理,但大于其余各处理。(4)基于崩壁稳定系数、含水量、覆盖度、径流与侵蚀量数据,采用相对差距和评价法对9种组合措施进行了定量评价,处理TDM为崩壁稳定复绿最优组合措施。
[Abstract]:In order to explore the effect of different combination measures of common engineering techniques and local plants on the stability of the wall, the optimum combination of the stability of the collapse of the wall of the slope was screened. The collapsed wall artificial runoff plots observation test, layout of the 9 different combinations of measures: rill seeding (irrigation) (RSS), small step rill seeding (irrigation) (SSR), small step 3D net seeding (irrigation) (SST), the three-dimensional net seeding (irrigation) (TDM), geogrid seeding (irrigation) (GEG), grass point (filling) (HOP), rill seeding shrubs (RPS), rill seeding planting grass (RPG) and control (CON). Native plants (Paspalum notatum Alain ex were Fl GG (Cynodon), Bermuda dactylon (L.) Pers. (Oxytropis hirta), Tephrosia Bunge (Amorpha fruticosa) and Amorpha fruticosa L.). The results showed that: (1) there was a positive correlation between the water content in the soil and the accumulated rainfall in the early stage. The stability coefficient of the collapse wall increased first and then decreased with the increase of water content. The TDM stability coefficient was the largest and the CON stability coefficient was the smallest, which was significantly lower than that of the rest treatments (P=0.05). (2) the vegetation coverage of TDM and CON was the largest and the smallest, respectively, and significantly higher than that of the other treatments (P=0.05). (3) the runoff and erosion amount of CON treated wall were significantly higher than those of the rest treatments (P=0.05), and the erosion volume of RPS and RPG treatment was smaller than that of CON, but larger than that of the rest treatments. (4) based on the data of wall stability coefficient, water content, coverage, runoff and erosion volume, 9 relative measures were quantitatively evaluated by relative difference and evaluation method, and TDM was the best combination measure for stabilizing and refolding the green wall.
【作者单位】： 珠江水利委员会珠江流域水土保持监测中心站;珠江水利委员会珠江水利科学研究院;
【基金】：广东省水利科技创新项目(2009-50) 水利部黄土高原水土流失过程与控制重点实验室开放课题基金资助项目(2016006) 国家自然科学基金项目(41501019) 全国水土流失动态监测与公告项目(1261520610101)
【分类号】：S157
【正文快照】： 崩岗是我国南方红壤区特有的土壤侵蚀现象,是在重力与水力交互作用下导致山坡土体崩塌及冲刷的侵蚀现象[1],崩岗侵蚀是南方红壤区水土流失重要因素。南方红壤区风化母质残积物深厚,且土壤抗蚀性差、地形陡峭、降雨量大,导致区域崩岗侵蚀问题十分突出,对区域经济社会发展产生了，

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