As the coal mining goes deeper, strong mining induced tremors frequently occur, which seriously threaten the safety of underground miners and ground residents, as well as the productivity and effectiveness of mining activities. The deep-hole blasting technology is expected to weaken or fracture the roof, thereby reducing the risk of strong mine tremors. However, the effectiveness of this technology lacks systematic study. This paper investigates the characteristics of mine tremors and stress distribution before and after deep-hole blasting during the mining process in Dongtan coal mine in Shandong province, China, and reveals the effect of deep-hole blasting in preventing and controlling strong mine tremors. After the deep-hole blasting, the energy and spatial distribution of the mine tremors change greatly. The energy of small mine tremors increases by an order of magnitude, but large-energy mine tremors (hazardous mine tremors) are basically eliminated. Combined with the results of stress monitoring, the deep-hole blasting technology could effectively weaken and fracture the thick-and-hard strata overlying the coal seam, so as to achieve the purpose of discharging strain energy in overlying rock. The implementation of deep-hole blasting technology will not eliminate mine tremors, but it could reduce or eliminate the strong mine tremors caused by the instantaneous fracturing of the large-scale suspended roof.

随着采煤深度的不断深入，强烈的采煤震颤频发，严重威胁井下矿工和地面居民的安全，以及采矿活动的生产效率和效益。深孔爆破技术有望削弱或破坏顶板，从而降低发生强烈矿震的风险。然而，这项技术的有效性缺乏系统的研究。研究了山东东滩煤矿开采过程中深孔爆破前后的矿震特征及应力分布，揭示了深孔爆破防治强矿震的效果。深孔爆破后，矿井震动的能量和空间分布发生较大变化。小矿震能量增加一个数量级，但大能量矿震（危险矿震）基本消除。结合应力监测结果，深孔爆破技术可以有效地弱化和压裂上覆煤层的厚硬地层，从而达到释放上覆岩石应变能的目的。深孔爆破技术的实施并不能消除矿震，但可以减轻或消除大型悬空顶板瞬时压裂引起的强烈矿震。深孔爆破技术可以有效地弱化和破碎煤层上覆的厚硬地层，从而达到释放上覆岩石应变能的目的。深孔爆破技术的实施并不能消除矿震，但可以减轻或消除大型悬空顶板瞬时压裂引起的强烈矿震。深孔爆破技术可以有效地弱化和破碎煤层上覆的厚硬地层，从而达到释放上覆岩石应变能的目的。深孔爆破技术的实施并不能消除矿震，但可以减轻或消除大型悬空顶板瞬时压裂引起的强烈矿震。