Effects of grout injection techniques in pressure grouted soil nail system Mohammad Zahidul I. Bhuiyan, Shanyong Wang, Scott W. Sloan, John Carter and Tabassum Mahzabeen Raka E3S Web Conf., 92 (2019) 17010 Published online: 25 June 2019 DOI: 10.1051/e3sconf/20199217010