In response to the problems of large deformation and difficult maintenance in the mining roadway of Qingwa Coal Industry, through on-site research and theoretical analysis, it was determined that the instability of the roadway was affected by the continuous movement of the overlying rock in the goaf of the adjacent working face. Combined with the geological conditions of production in No.22051 raodway, a deep hole blasting pressure relief and optimization plan for the support parameters of No.22051 raodway were proposed. On site mining pressure monitoring data showed that after blasting pressure relief, the transverse and longitudinal cracks on the roof of the roadway developped alternately, and the surrounding rock was broken. At the same time, the maximum movement of the roof and floor of No.22062 roadway after blasting pressure relief was 221mm, and the maximum movement of the two sides was 235mm. Compared with before pressure relief, the movement of the roof and floor of the roadway was reduced by 49.2%, and the movement of the two sides was reduced by 55.5%, effectively controlling the stability of the surrounding rock of the mining roadway and providing reference for the treatment of mining roadway under similar conditions.
王朋卫. 基于聚能爆破切顶卸压的邻掘巷道围岩控制技术[J]. 煤炭与化工, 2025, 48(2): 15-18.
Wang Pengwei. Surrounding rock control technology for adjacent excavation roadway based on energy gathering blasting for top cutting and pressure relief. CCI, 2025, 48(2): 15-18.