Key technology analysis and development trend of the equipment for ultra-long directional drilling and grouting

LI Shu-cai, LI Li-ping, SUN Zi-zheng, LIU Zhi-hui, LI Meng-tian, PAN Dong-dong, TU Wen-feng,

Rock and Soil Mechanics . 2023, (1): 1 -30 . DOI: 10.16285/j.rsm.2022.2027