Study of Mechanical Characteristics of Surrounding Rock and Supporting Structure of Enlarging Construction of Circular Soft Rock Tunnel with High Ground Stress

ZOU Chong， YOU Xianming， JIAO Lei， HUANG Mingli， XIAO Zutong

Tunnel Construction . 2017, (1): 30 -36 . DOI: 10.3973/j.issn.1672-741X.2017.01.005