摘要
不均匀的地面沉降会严重影响高速铁路等线性工程的平稳运行。为了评估地面沉降区建设高速铁路的适宜性问题,基于地理信息系统,将灾害风险指数评估法、模糊层次分析法和综合评价法相结合,通过多目标准则决策的叠加分析对拟建的津潍铁路沿线进行地面沉降的危险性评价与分析。结果表明:基于GIS系统建立的综合评估模型是分析铁路选址适宜性的有效手段;拟建津潍铁路沿线的危险等级划分为轻微、一般、较严重、严重4个区域,其中,拟建铁路大部分里程分布于轻微区和一般区,表明了铁路选址具有较好的适宜性和可控性,而高危险区主要分布在DK285~DK293段和DK315~DK325段附近,地面沉降量达150 mm,沉降坡度也较大,因此具有较高的危险性,需要对这两段铁路沿线500 m范围内采取禁采措施。
Uneven land subsidence will seriously affect the smooth operation of linear engineering such as high-speed railway.To evaluate the suitability of the construction of high-speed railway in the land subsidence areas,based on geographic information system(GIS),the disaster risk index assessment method,fuzzy hierarchical analysis method and comprehensive evaluation method were combined to evaluate and analyse the risk of land subsidence along the proposed Tianjin-Weifang high speed railway through the superposition analysis of multi-objective criteria decision.The results show that the comprehensive evaluation model based on GIS is an effective means to analyze the suitability of railway route selection.The risk levels along the proposed railway are divided into four areas:mild,medium,relatively serious and serious.Most of the proposed railway mileages are distributed in the mild area and the medium area,which indicates that the railway route selection has better suitability and controllability.However,the high risk areas are mainly distributed in the vicinity of DK285~DK293 and DK315~DK325 sections.The land subsidence in these areas is up to 150 mm and the subsidence slope is also large,which indicates that these areas are at high risk.It is necessary to prohibit the exploitation of groundwater within 500 m along the two sections of the railway line.
作者
贾超
姚越
杨霄
张晓伟
JIA Chao;YAO Yue;YANG Xiao;ZHANG Xiaowei(Institute of Marine Science and Technology,Shandong University,Qingdao 266232,China;Qingdao Water Conservancy Survey and Design Institute Co.,Ltd.,Qingdao 266100,China;Jining Xincheng Water Supply Co.,Ltd.,Jining 272000,China)
出处
《人民长江》
北大核心
2022年第12期104-110,156,共8页
Yangtze River
基金
山东省自然科学基金青年项目(ZR2020QD124)。
关键词
地面沉降
危险性评估
统计分析
铁路选址
高速铁路
land subsidence
risk assessment
statistical analysis
railway site selection
high speed railway
