Zhang Wenyong

Development and performance evaluation of a novel borehole protection screen pipe for preventing borehole collapse in soft and fragmented rock strata

High-level roof borehole is one of the core technologies for gas control in high-gas mines in China. However, in soft and fragmented rock strata, the influence of mining-induced stress disturbance often causes compression-torsion deformation, borehole wall collapse, or dislocatio...