Stratum deformation caused by different tunnel excavation steps

Release time:2016-03-31

Journal:Chinese Journal of Geotechnical Engineering

Key Words:tunnel construction; stratum deformation; stochastic medium; time-space effect; construction step

Abstract:基于随机介质理论，考虑隧道施工过程中周边地层变形的时间–空间发展过程，研究了隧道不同位置多工作面同时施工条件下地层变形的计算方法，推导了相应的计算公式，进一步讨论了隧道对向施工、背向施工、纵向施工分部前后间距等施工因素影响下隧道周边地层变形的变化规律。在双向对向施工条件下，地表上方出现的正曲率和拉伸变形比单向施工时约大一倍，对地表建筑设施不利，隧道施工中应避免在有重要建筑设施地段交会贯通；

Co-author:黄 娟, 彭立敏, 施成华

Indexed by:Unit Twenty Basic Research

Document Code:1000-4548(2008)09-1303-06

Discipline:土木工程

Document Type:J

Volume:30

Issue:9

Page Number:1303-1308

ISSN No.:1000-4548

Translation or Not:no

Date of Publication:2008-09-15

Links to published journals:http://www.cnki.net/KCMS/detail/detail.aspx?QueryID=1&CurRec=17&recid=&filename=YTGC200809009&dbname=CJFD2008&dbcode=CJFQ&pr=&urlid=&yx=&uid=WEEvREcwSlJHSldSdnQ1YmFTbFd1L0d0d1NOZFNUMlpFTFZvM0ZwY2lBUWR