School of Highway Chang'an University Xi'an 710064 China;
School of Highway Chang'an University Xi'an 710064 China;
School of Geological Engineering and Geomatics Chang'an University Xi'an 710064 China;
School of Geological Engineering and Geomatics Chang'an University Xi'an 710064 China;
Tunnel and Underground Engineering Research Center of Jiangsu Province Nanjing 210041 China;