地质因素对隧道围岩松动圈的影响分析&mdash;&mdash;以重庆某隧道为例

田明昱; 王艳磊; 腾俊洋; 舒国钧

doi:10.3973/j.issn.1672-741X.2016.04.004

隧道建设 >

2016 , Vol. 36 >Issue 4: 390 - 397

DOI: https://doi.org/10.3973/j.issn.1672-741X.2016.04.004

研究与探索

地质因素对隧道围岩松动圈的影响分析——以重庆某隧道为例

田明昱 ,
王艳磊 ,
腾俊洋 ,
舒国钧

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（1. 葛洲坝集团第五工程有限公司，湖北宜昌 443002； 2. 重庆大学资源及环境科学学院，重庆 400030）

田明昱（1974—），男，四川遂宁人，1997年毕业于重庆大学，采矿工程专业，硕士，高级工程师，主要从事岩土工程与交通土建等方面的研究工作。Email: 860024333@qq.com。

收稿日期: 2015-09-08

修回日期: 2015-11-09

网络出版日期: 2016-04-27

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Analysis of Influence of Geological Factors on Loose Zone of Surrounding Rock: A Case Study of A Tunnel in Chongqing

TIAN Mingyu ,
WANG Yanlei ,
TENG Junyang ,
SHU Guojun

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（1. The Fifth Engineering Co., Ltd., CGGC, Yichang 443002, Hubei, China; 2. College of Resources and Environmental Sciences, Chongqing University, Chongqing 400030, China)

Received date: 2015-09-08

Revised date: 2015-11-09

Online published: 2016-04-27

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摘要

为了分析地质因素对隧道围岩松动圈的影响，以重庆某深埋特长隧道为工程背景，根据该隧道埋深和围岩级别多变等特点，运用数值模拟、正交试验和现场实测相结合的方法，研究该隧道围岩松动圈产生、发展和分布的规律。结果表明：该隧道围岩的内摩擦角和黏聚力与松动圈大小呈负相关关系，侧压系数和埋深与松动圈大小呈正相关关系，且内摩擦角和埋深是影响该隧道围岩松动圈大小的主要因素。依据研究结果，可以确定该隧道不同地质条件下的围岩松动圈分布情况，及时优化支护参数，以指导隧道安全高效地施工。

关键词： 隧道; 地质因素; 围岩松动圈; 数值模拟; 正交试验; 现场实测

本文引用格式

田明昱 , 王艳磊 , 腾俊洋 , 舒国钧 . 地质因素对隧道围岩松动圈的影响分析——以重庆某隧道为例[J]. 隧道建设, 2016 , 36(4) : 390 -397 . DOI: 10.3973/j.issn.1672-741X.2016.04.004

Abstract

The influence of geological factors on loose zone of surrounding rock is analyzed by taking an extralong deep tunnel in Chongqing for example. The formation, development and distribution of loose zone of surrounding rock of tunnel are studied by means of numerical simulation method, orthogonal test and field test. The results show that: 1) The internal friction angle and cohesion of the tunnel surrounding rock have a negative correlation with loose zone of surrounding rock. 2) The side pressure coefficient and buried depth have a positive correlation with loose zone of surrounding rock. 3) The internal friction angle and buried depth are the main factors of loose zone of surrounding rock. The distribution of loose zone of surrounding rock of tunnel under different geological conditions can be aware of; and then the tunnel support parameters can be optimized timely so as to guide the tunnel constrution with safety and efficiency according to the study results.

Key words： tunnel; geological factors; surrounding rock loose zone; numerical simulation; orthogonal test; field test

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