郑万高铁鄂渝段主要地质灾害与地质选线  

Major Geological Hazard and Geological Alignment of Zhengzhou-Wanzhou High-speed Railway Hubei-Chongqing Section

作　　者：邹远华[1] 曾德建[1] ZOU Yuanhua;ZENG Dejian(China Railway Eryuan Engineering Group Co.Ltd,Chengdu,Sichuan 610031,China)

机构地区：[1]中铁二院工程集团有限责任公司,成都610031

出　　处：《铁道工程学报》2021年第12期19-24,共6页Journal of Railway Engineering Society

摘　　要：研究目的:郑万高铁鄂渝段位于秦岭与大巴山东延段神龙架地区腹地,地形地质条件极其复杂,岩溶及岩溶水、危岩落石、滑坡、库岸稳定等地质问题严重控制着线路方案比选和工程设置。本文结合沿线工程地质条件,深入开展地质选线工作,制定地质选线原则,以期达到防灾减灾的目的。研究结论:(1)岩溶及岩溶水、危岩落石、滑坡、库岸稳定为郑万高铁鄂渝段主要不良地质;(2)针对本线的主要工程地质问题,提出了复杂地质条件下铁路地质选线原则;(3)岩溶是本线主要的不良地质体,控制线路方案和工程设置,复杂岩溶地区选线应遵循“先绕避、短通过、抬高程、傍河边、靠既隧、顺坡排、浅覆盖”的原则;(4)对各方案地质条件进行综合比选,利用选线原则选定了工程地质条件相对较优的线路方案;(5)本研究成果可为类似地质条件下高速铁路地质选线提供依据和参考。Research purposes:Zhengzhou-Wangzhou high-speed railway Hubei-Chongqing section is located in the hinterland of Shenlongjia area between Qinling Mountains and Dabashan Mountains,the topographic and geological conditions along the line are extremely complex,karstification and karst water,dangerous rockfall,landslide,and stability of river bank scouring are the main engineering geological problems of controlling route scheme and project setting.In order to achieve the purpose of disaster prevention and mitigation,combining with the engineering geological conditions along the line,the geological alignment work is carried out in depth,and the principle of geological alignment is established.Research conclusions:(1)Karstification and karst water,dangerous rockfall,landslide,and stability of river bank scouring are the main engineering geological problems of the railway.(2)In view of the main engineering geological problems of this line,the principle of geological alignment under the complex geological conditions is put forward.(3)The karst is the most unfavorable geological object and has huge harm and impact on the railway construction.Then the principle of geological alignment in complex karst area is put forward,which include:avoiding firstly,passing in the short distance,increasing elevation,alongside the river,approximating existing tunnel,and shallow cover.(4)A relatively better engineering geological conditions scheme has been chosen according to comparison of geological conditions of all the line schemes.(5)The research results can provide basis and reference for high-speed railway geological route selection under the similar geological conditions.

关 键 词：郑万高铁 鄂渝段 地质选线 地质灾害 防灾减灾 

分 类 号：P642[天文地球—工程地质学]