摘要
在隧道施工引起的地层位移预测与相关风险管理中,地表沉降槽的延伸宽度是一个重要的课题,也是进行沉降预测的主要参数之一。但是目前一些常见的沉降槽宽度计算公式在很多情况下并不适用,同时国内与国外的应用情况也有很大的差别。就目前已有的相关成果进行了全面的总结和分析,讨论了工程地质条件对沉降槽宽度的影响,然后采用数值分析技术,研究了隧道直径对沉降槽宽度的影响作用,认为对于一般的城市地铁隧道,隧道直径对沉降槽宽度参数的影响因素可以忽略不计。在上述讨论的基础上,推荐了适用于北京地区的沉降槽宽度确定方法。
The extending width of the settlement trough induced by the urban tunneling is a key issue in the ground movement prediction and the related risk management.However,the research on this problem is inadequate for a long time,and some of the methods determining the trough width are unsuitable,also,there are quite a big difference between the application at home and abroad in this field.This paper discussed the effects of the geological conditions on the width of the settlement trough based on a comprehensive review of the related methods.The influence of the tunnel diameter is discussed from the parametric study using the numerical analysis method,and it is concluded that for the nominal urban subway tunnel,the effect of the dimension of the tunnel on the width parameter can be ignored.Finally,a suitable method for the settlement trough width parameter in Beijing Area is suggested.
出处
《地下空间与工程学报》
CSCD
北大核心
2009年第A6期1188-1193,1219,共7页
Chinese Journal of Underground Space and Engineering
基金
北京市科学技术委员会"北京市科技新星"项目(编号2005B29)
北京市优秀人才培养专项经费资助项目(编号2008F-13)
关键词
隧道
地铁
地层位移
沉降槽
tunnel
subway
ground movement
settlement trough
