STATIC CRUSHING DIRECTIONAL ANCHOR WITHDRAWAL METHOD AT END OF LARGE-MINING-HEIGHT WORKING FACE

• Main Authors: WANG, Jiangning, LI, Xiaogang, WANG, Dongdong, TIAN, Bin, MO, Zhenghu, REN, Yuanda, GAO, Chao, WU, Jun, WANG, Fuqi, ZHANG, Hua, LI, Zhixiang, CHEN, Jianhua, WANG, Longfei, LI, Xuandong
• Format: Patent
• Language: English
• Published: 07.03.2024
• Subjects: EARTH DRILLING; FIXED CONSTRUCTIONS; GALLERIES; LARGE UNDERGROUND CHAMBERS; MINING; SHAFTS; TUNNELS

For the problem of difficult roof anchor withdrawal at the end of a working face, a static crushing directional anchor withdrawal method at the end of a large-mining-height working face is provided. The method includes the following steps: designing key parameters of boreholes for static crushing, i...