doi:10.3850/9789810844554-0032 Application of the Optimization for Rock Tunnel’s Axis Trend by Block TheoryYang Wenjun1,2,a, Hong Baoning1,2, Sun Shaorui1,2 and Zhu Lei1,21Key Laboratory of Ministry of Education for Geomechanics and Embankment Engineering, Nanjing 210098 China.2Geotechnical Research Institute, Hohai University, Nanjing 210098 China. |