【摘要】 煤体破坏失稳而发生冲击矿压的巷道,采用锚固技术,能够增加锚固围岩的力学性质,改善锚固围岩的应力状态,防止基本顶的离层,充分调动和增加围岩的自承性能,减少顶板的下沉量和下沉速度,降低顶板突然下沉的可能性,增加夹持煤体释放能量的难度。更多还原

【Abstract】 In a mine roadway with potential rock bump, the mechanism properties of surrounding rocks could be improved with the bolting technology. With the bolting technology, the stress status of the bolted surrounding rock could be improved, the separation of basic roof could be prevented, the self loading performances of the surrounding rocks could be fully boosted and increased and the roof falling rate and speed of the roof could be reduced. Also the possibility of the roof sudden falling could be reduced and the difficulty for releasing energy from coal body could be increased.更多还原