水利水电技术（中英文）2024，Vol.55Issue(6)：96-105,10.DOI:10.13928/j.cnki.wrahe.2024.06.008
石漠化边坡及其植被板槽的地下渗漏一体化综合观测技术及应用模拟
Integrated comprehensive observation technology and application simulation on underground leakage of rocky desertification slope and its vegetation plate slot
摘要
Abstract
[Objective]The surface and underground soil erosion of rocky desertification slope with poor topsoil is serious,which limits the vegetation restoration in this area.The ecological protection of soil and water conservation is a hot issue in the construc-tion of green highway.[Methods]Combined with the engineering requirements of soil and water conservation in the rocky deserti-fication slope of Laidu section of Heba Expressway in Guangxi,the integrated comprehensive observation technology of under-ground leakage of rocky desertification slope is developed,and the generalized model of integrated comprehensive observation of soil and water loss of rocky desertification slope and its vegetation plate slot are simulated and analyzed by numerical experiment.[Results]The numerical test result showed that,when the rocky desertification slope was only covered with a thin layer of soil,the total underground leakage reached more than 65%,with the increase of karst fissure rate and fissure inclination,the percent-age of bedrock fissure leakage increased,and the percentage of leakage from the epikarst zone decreased;after the vegetated and earth-filled slab trenches were installed on the rocky desertification slope,and the anti-seepage material at the bottom of the slab trench was not included,the percentage of the total underground leakage became around 40%,and reduced by more than 25%in comparison with the rocky desertification slope which was only covered with a thin layer of soil.The water retention efficiency of vegetated slab trenches on rocky desertification slope increased with the increase of vegetation cover;the increase of slope gradi-ent would cause the increase of underground leakage on exposed slopes,thus it was necessary to strengthen the construction of slope rainfall runoff collection and rain catchment surface function on rocky desertification slopes.[Conclusion]The research result can provide theoretical basis for the field research and engineering application of ecological protection measures of soil and water conservation in rocky desertification slope.关键词
边坡工程/植被板槽/一体化综合观测/水土保持/生态防护/数值模拟/模型试验Key words
slope engineering/vegetation plate slot/integrated comprehensive observation/soil and water conservation/ecologi-cal protection/numerical simulation/model test分类
交通工程引用本文复制引用
罗凯,罗祺,周成,张劢捷,周泽昶,杨礼明,廖烟开..石漠化边坡及其植被板槽的地下渗漏一体化综合观测技术及应用模拟[J].水利水电技术（中英文）,2024,55(6):96-105,10.基金项目
国家自然科学基金联合基金重点支持项目(U22A20602,U2340227) （U22A20602,U2340227）
2020年度第三批广西交通运输行业重点科技项目(XFZ-KY-LYH-20200112), （XFZ-KY-LYH-20200112）
