Physical modeling experimental study on failure mechanism of surrounding rock of deep-buried soft tunnel based on digital image correlation technology

被引：0
作者：
Xiaoming Sun
Peng Song
Chengwei Zhao
Yong Zhang
Gan Li
Chengyu Miao
机构：
[1] China University of Mining and Technology (Beijing),State Key Laboratory for GeoMechanics and Deep Underground Engineering
[2] China University of Mining and Technology (Beijing),School of Mechanics and Civil Engineering
来源：
Arabian Journal of Geosciences | 2018年 / 11卷
关键词：
Deep-buried soft tunnel; Physical model experiment; Noncontact displacement; Deformation mechanism;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
In this paper, a physical model experiment was conducted to study the deformation and failure mechanism of surrounding rock of deep-buried soft tunnel. With the help of noncontact displacement monitoring system, strain data acquisition system, and high-definition camera, the displacement field data, the strain field data, and the deformation and failure process of surrounding rock were obtained during the experiment. The results of study showed that the excavation footage and horizontal stress had a significant influence on the deformation of surrounding rock of deep-buried soft rock tunnel; the surrounding rock had obvious asymmetrical deformation, and the key position of failure was located at the top and right side of tunnel; the uncoordinated deformation areas were the potential dangerous destruction areas of surrounding rock; and the surrounding rock of tunnel was destroyed under the combined action of tension and compression stress.
引用
收藏
相关论文
共 103 条
[1]  
Bobet A(2009)Elastic solution for deep tunnels. Application to excavation damage zone and rockbolt support Rock Mech Rock Eng 42 147-174
[2]  
Chen GQ(2008)Research on prevention measures for failure induced by tunneling in deep hard rock Chin J Rock Mech Eng 27 2064-2071
[3]  
Feng XT(2016)Blasting excavation induced damage of surrounding rock masses in deep-buried tunnels KSCE J Civ Eng 20 933-942
[4]  
Zhang CQ(2013)Multi-filter analysis of infrared images from the excavation experiment in horizontally stratified rock Infrared Phys Technol 56 57-68
[5]  
Chen M(2013)Thermography analysis of a roadway excavation experiment in 60° inclined stratified rocks Int J Rock Mech Min Sci 60 134-147
[6]  
Lu WB(2015)Enhancement of low-contrast thermograms for detecting the stressed tunnel in horizontally stratified rocks Int J Rock Mech Min Sci 74 69-80
[7]  
Yan P(2015)Physical modeling of deep ground excavation in geologically horizontally strata based on infrared thermography Tunn Undergr Space Technol 49 156-173
[8]  
Gong WL(2006)Study on relationship between deformation of surrounding rock and in-situ stress in Wushaoling deep-buried railway tunnel Chin J Rock Mech Eng 25 2194-2199
[9]  
Gong YX(2011)Physical modeling of an underground roadway excavation in geologically 45 inclined rock using infrared thermography Eng Geol 121 165-176
[10]  
Long YF(2009)Physical modeling of failure process of the excavation in horizontal strata based on IR thermography Min Sci Technol 19 689-0698
12345678910