银西高铁宁夏段荒漠化特征及肥水状态研究  

Study on Characteristics of Desertification and State of Fertilizer and Water in Ningxia Section of Yinchuan—Xi’an High-speed Railway

作　　者：范世鸿 苗学云 吴永峰 刘涛 章洵 朱文博 FAN Shihong;MIAO Xueyun;WU Yongfeng;LIU Tao;ZHANG Xun;ZHU Wenbo(The Fifth Engineering Co.,Ltd.of China Railway First Engineering Group,Baoji 721006,Shaanxi,China;Northwest Research Institute Co.,Ltd.of China Railway Engineering Corporation,Lanzhou 730000,China;Yinxi Railway Co.,Ltd.,Xi'an 710054,China;Xi'an University of Science and Technology,Xi'an 710054,China)

机构地区：[1]中铁一局集团第五工程有限公司,陕西宝鸡721006 [2]中铁西北科学研究院有限公司,兰州730000 [3]银西铁路有限公司,西安710054 [4]西安科技大学,西安710054

出　　处：《路基工程》2022年第2期35-39,共5页Subgrade Engineering

基　　金：宁夏回族自治区重点研发计划项目(2019BFG02013)。

摘　　要：通过银西高铁宁夏段近5年的气象资料,从降雨量、蒸发量、月均温度、极值风速等方面进行分析研究,结果显示:宁夏段干燥度为4.4~6.7,全年最大温差达到34℃,极值风速达到20.8 m/s,整体表现为荒漠化加剧的特征;选取该段高铁路基中6个试验段,对其土壤的含水率、pH值及土壤养分进行现场监测试验研究,结果表明:该区域土壤表现为低含水量、高盐碱、低氮等特征。为下一步边坡生态防护工程提出了选择耐寒抗旱性较强的乔灌木作为高铁路基边坡绿色植物的科学合理的建议,银西高铁边坡生态防护工程研究取得了阶段性的成果。Based on the meteorological data of Ningxia section of Yinchuan—Xi’an high-speed railway in recent five years, it is analyzed from rainfall, evaporation, monthly mean temperature, extreme wind speed and other aspects. The results show that the dryness of Ningxia section is 4.4 ~ 6.7, the maximum annual temperature difference reaches 34 ℃ and the extreme wind speed is 20.8 m/s, which shows the characteristics of intensified desertification as a whole. Through selecting 6 test sections from the high-speed subgrade, the field monitoring test study on the slope soil moisture content, pH value and soil nutrient of the high-speed railway was carried out. The results show that the soil in this area is characterized by low moisture content, high salinity and low nitrogen content. It is suggested that trees and shrubs with strong cold and drought resistance should be selected as green plants for the slope of the high railway foundation. The slope ecological protection project of Yinchuan—Xi’an high-speed railway has achieved phased results.

关 键 词：银西高铁 荒漠化 高铁边坡 土壤养分 生态防护 植被物种 

分 类 号：U25[交通运输工程—道路与铁道工程]