|本期目录/Table of Contents|

[1]张坤鹏,曾榕,邢心魁.不同跨度下土质隧道围岩分区规律研究[J].南京工业大学学报(自然科学版),2015,37(04):92-96.[doi:10.3969/j.issn.1671-7627.2015.04.016]
 ZHANG Kunpeng,ZENG Rong,XING Xinkui.Study on distribution laws of surrounding rock zone of soil tunnel with different spans[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2015,37(04):92-96.[doi:10.3969/j.issn.1671-7627.2015.04.016]
点击复制

不同跨度下土质隧道围岩分区规律研究()
分享到:

《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
37
期数:
2015年04期
页码:
92-96
栏目:
出版日期:
2015-07-09

文章信息/Info

Title:
Study on distribution laws of surrounding rock zone of soil tunnel with different spans
文章编号:
1671-7627(2015)04-0092-05
作者:
张坤鹏12曾榕1邢心魁1
1.桂林理工大学,广西岩土力学与工程重点实验室,广西 桂林 541004; 2.钦州学院,建筑工程学院,广西 钦州 535000
Author(s):
ZHANG Kunpeng 12ZENG Rong1XING Xinkui1
1.Guangxi Key Laboratory of Geomechanics and Geotechnical Engineering,Guilin University of Technology, Guilin 541004,China; 2.College of Architecture Engineering,Qinzhou University,Qinzhou 535000,China
关键词:
土质隧道 分区规律 数值模拟 Drucker-Prager屈服准则 莫尔-库伦屈服准则
Keywords:
soil tunnel distribution laws numerical simulation Drucker-Prager yield criterion Mohr-Coulomb yield criterion
分类号:
U452
DOI:
10.3969/j.issn.1671-7627.2015.04.016
文献标志码:
A
摘要:
采用砂土模拟围岩,以实验的方法确定不同跨度的隧洞开挖后围岩的分区规律。采用基于Drucker-Prager(D-P)屈服准则的有限元数值模拟和鲁宾涅特一般圆形隧洞的塑性区半径公式,比较实验与2种计算方法下的塑性区大小。结果表明:在选用土质隧道较不利围岩材料(砂土)条件下,塑性区的厚度约为隧洞跨度的一半,松动区的厚度约为跨度的1/5,洞顶松动区占塑性区的比例最大。实验条件下确定的围岩塑性区厚度最大,基于D-P屈服准则条件下有限元模拟所确定的塑性区次之,鲁宾涅特公式所确定的塑性区最小。
Abstract:
In this study,sandy soil was utilized to simulate the surrounding rock.The distribution laws of surrounding rock of tunnels with different spans after excavation can be determined by experimental studies.A finite element model with Drucker-Prager yield criterion was established to examine the size of plastic zone,meanwhile,the analytical size of plastic zone was obtained based on Ruppeneit formula generally plastic zone radius l model.Comparison of experimental and predicted results shows that the thickness of the plastic zone is about half of the tunnel span,and thickness of the broken zone is about 1/5 of the tunnel span under the most unfavorable sorrounding rock(sand soil)conditions.The top of the tunnel surrounding rock accounts for the largest proportion of plastic zone.For the thickness of the plastic zone of surrounding rock,the experimental result is the largest; the result obtained by Drucker-Prague yield criterion is second to it; and the result obtained by Ruppeneit formula was the smallest.

参考文献/References:

[1] 梁晓丹,刘刚,赵坚.地下工程压力拱拱体的确定与成拱分析[J].河海大学学报:自然科学版,2005,33(4):314-317.
[2] 梁晓丹,宋宏伟,赵坚.隧道压力拱与围岩变形关系[J].西安科技大学学报:自然科学版,2008,28(4):647-650.
[3] 贾海莉,王成华,李江洪.关于土拱效应的几个问题[J].西南交通大学学报:自然科学版,2003,38(4):398-402.
[4] 张向东,张树光,贾宝新.隧道力学[M].徐州:中国矿业大学,2010.
[5] 吴中如.隧道围岩的塑性区和松动区范围的推算[J].华东水利学院学报,1985(1):71-86.
[6] 鲁稳,古少枫,侯宜润.基于D-P准则的深埋隧道破碎化分区规律研究[J].隧道建设,2012,32(5):649-653.
[7] 张仙义.圆形隧道围岩应力与位移的数值模拟与分析[D].杭
  州:浙江大学,2007.
[8] 裴春,李俊才,郭亮,等.地铁隧道沉降规律多因素分析[J].南京工业大学学报:自然科学版,2014,36(6):104-110.
[9] 肖明,张雨霆,陈俊涛,等.地下洞室开挖爆破围岩松动圈的数值分析计算[J].岩土力学,2010,31(8):2613-2618.
[10] Lian Z S,Wang J R,Hao C Y.Numerical simulation and experimental research of surrounding rock deformation of floor roadway under short-distance coal seam group combined mining[J].Journal of Coal Science & Engineering(China),2010(3):178-185.
[11] 周志华,叶洲元,段瑜.软岩巷道围岩松动圈的数值模拟[J] 中国矿业,2009,18(10):97-99.
[12] 邓楚键,何国杰,郑颖人.基于M-C准则的D-P系列准则在岩土工程中的应用研究[J].岩土工程学报,2006,28(6):735-739.

备注/Memo

备注/Memo:
收稿日期:2014-05-20
基金项目:国家自然科学基金(51068004); 广西岩土力学与工程重点实验室开放基金(11-CX-03)
作者简介:张坤鹏(1989—),男,河南周口人,硕士,主要研究方向为隧道与地下工程; 邢心魁(联系人),教授,E-mail:597983647@qq.com.
引用本文:张坤鹏,曾榕,邢心魁.不同跨度下土质隧道围岩分区规律研究[J].南京工业大学学报:自然科学版,2015,37(4):92-96..
更新日期/Last Update: 2015-07-08