ZHANG Rui,ZHANG Hong-jiang,JIANG Yu-lin,et al.Soil Conservation Measures of the Highway and Its Ecological Benefit——Taking Yichang Ⅳ, Hubei, Hurongxi Highway as a Case[J].Research of Soil and Water Conservation,2007,14(05):142-145.
高速公路水土保持措施及其生态效益分析——以沪蓉西高速公路湖北宜长Ⅳ标段为例
- Title:
- Soil Conservation Measures of the Highway and Its Ecological Benefit——Taking Yichang Ⅳ, Hubei, Hurongxi Highway as a Case
- 分类号:
- S157;U412
- 摘要:
- 以沪蓉西高速公路湖北省宜昌至长阳Ⅳ标段为对象，研究了该标段公路两侧边坡和弃土（渣）场的水土流失现状和水土流失防治措施种类及其布局。研究结果表明在挖方段边坡宜采用客土喷播技术，填方段边坡可采用拱形框架梁的护坡形式，弃土（渣）场则在削坡开级和修建挡渣墙、排洪沟基础上，可营建马尾松、栓皮栎混交林或刺槐、柏木混交林。通过对在典型地段采用插签法和布设径流小区获取的观测数据进行分析研究，实施水土保持措施前后弃土（渣）场土壤侵蚀量分别为5 247.7 t/（km2·a）和1 871.0 t/（km2·a），填方段边坡平均土壤侵蚀量分别为4 781.1 t/（km2·a）和2 196.6 t/（km2·a），其土壤侵蚀量消减率分别达到64.3%和54.1%。高速公路两侧绿化后能有效地改善公路路域小气候，保障行车安全。
- Abstract:
- Based on YichangⅣ,Hubei,Hurongxi highway,the situation of the soil and water loss in the highway’s slope and spoil disposal area was analyzed,also the kinds and the layout of the soil conservation measures were studied.The results showed that it was better to adopt external-soil spray seeding technique in the excavation section,and in the filled slope it can adopt vaulted frame measure.And in spoil disposal area the main protection measure is building Pinus massoniana,Quercus variabilis mixed forest and Robinia pseudoacacia,Cupressus funebris mixed forest,based on terrace,drainages and slag dam.Using the data of the runoff plots and insert-stick measure located in the typical area,after the measures the erosion amount in spoil disposal area reduced from 5 247.7 t/(km2·a) to 1 871.0 t/(km2·a),and in the filled slope the erosion amount reduced from 4 781.1 t/(km2·a) to 2 196. 6 t/(km2·a).The soil erosion removal rate of spoil disposal area and filled slope reached 64. 3% and 54. 1%. Virescence in both sides of highway can adjust regional climate and safeguard drivers’ safety.
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备注/Memo
收稿日期:2006-7-23。
基金项目:交通部西部交通科技项目“公路路与生态工程技术研究”的部分研究内容（20033182233）
作者简介:张锐（1982- ），女，硕士，主要从事水土保持研究。
通讯作者:张洪江，教授，博士生导师，主要从事流域管理和土壤侵蚀研究。