CAJ | 학술논문

巷道底板冲击是煤矿冲击矿压多种表现形式的一种，其显现强度与破坏程度愈发严重。论文理论分析了巷道底板的冲击诱发机理，并提出底板卸压防冲原理，即通过改变巷道底板的抗弯强度以降低巷道底板冲击诱发条件。同时采用FLAC3D数值模拟，分别对底煤巷道和硬底巷道采取的卸压槽、大直径钻孔等不同措施的解危效果进行比较分析，得出底煤巷道采取卸压槽和大直径卸压钻孔相结合的复合式卸压措施防冲效果较为理想，研究成查对于硬底巷道在巷道底板实施大直径钻孔和卸压爆破的组合式解危措施效果较理想。可为巷道底板冲击防治提供一定理论依据。
항도저판충격시매광충격광압다충표현형식적일충，기현현강도여파배정도유발엄중。논문이론분석료항도저판적충격유발궤리，병제출저판사압방충원리，즉통과개변항도저판적항만강도이강저항도저판충격유발조건。동시채용FLAC3D수치모의，분별대저매항도화경저항도채취적사압조、대직경찬공등불동조시적해위효과진행비교분석，득출저매항도채취사압조화대직경사압찬공상결합적복합식사압조시방충효과교위이상，연구성사대우경저항도재항도저판실시대직경찬공화사압폭파적조합식해위조시효과교이상。가위항도저판충격방치제공일정이론의거。
The occurrence intensity and damage degree of rock burst occurred in roadway floor of un-derground coal mines becomes more serious as the mining depth increases in China. In this paper, the inducement mechanism of floor burst was analyzed, and the corresponding control principle was put forward, that is, the burst-inducing condition was decreased by changing the bending strength of road-way floor. Additionally, FLAC 3D was adopted to simulate and compare the pressure-relief effects of dif-ferent control measures implemented in coal-floor roadway and rock-floor roadway, respectively. The results show that the pressure-relief effect of the control method by combination of large-diameter bo-rehole and pressure-releasing groove on coal-floor roadway is more effective, while the combination of large-diameter borehole and releving shot on rock-floor roadway can achieve better pressure-relief ef-fect. The research results in this paper can provide theoretical reference for floor burst control in under-ground mining.