动静载叠加扰动下碎裂煤巷围岩冲击破坏研究
发布时间：2018-08-10 17:27
【摘要】：羊场湾煤矿1306孤岛工作面运输巷受顶板强烈动载扰动作用发生巷道冲击地压,通过现场调研、理论分析、微震监测和数值模拟等手段,对动静载叠加作用对巷道围岩的影响进行了研究。基于微震监测系统对冲击地压发生期间顶板大能量震动事件定位为依据,根据具体地质条件应用数值模拟方法建模分析了不同强度动载扰动作用下巷道围岩应力和位移演化规律。研究结果表明,随着动载震源与巷道距离的增加,巷道顶底板受到的影响效果急剧衰减,而两帮受到的影响效果成比例下降。
[Abstract]:The roadway impact ground pressure occurred in the transport roadway of 1306 island working face of Yangchangwan Coal Mine under the strong dynamic load disturbance of roof. Through field investigation, theoretical analysis, microseismic monitoring and numerical simulation, etc. The influence of static and static load superposition on surrounding rock of roadway is studied. Based on the microseismic monitoring system, the location of large energy vibration events of roof during the period of impact ground pressure is based on. According to the specific geological conditions, numerical simulation method is used to model and analyze the stress and displacement evolution law of roadway surrounding rock under the disturbance of dynamic load of different intensity. The results show that with the increase of the distance between the earthquake source and the roadway, the effect of roadway roof and floor decreases sharply, while the effect of the two bands decreases proportionally.
【作者单位】： 瓦斯灾害监控与应急技术国家重点实验室;中煤科工集团重庆研究院有限公司;中国矿业大学(北京)资源与安全工程学院;
【基金】：“十三五”重点研发计划(2016YFC0801404) 中国煤炭科工集团科技创新基金计划(2013ZD002)
【分类号】：TD324
，
本文编号：2175662
[Abstract]:The roadway impact ground pressure occurred in the transport roadway of 1306 island working face of Yangchangwan Coal Mine under the strong dynamic load disturbance of roof. Through field investigation, theoretical analysis, microseismic monitoring and numerical simulation, etc. The influence of static and static load superposition on surrounding rock of roadway is studied. Based on the microseismic monitoring system, the location of large energy vibration events of roof during the period of impact ground pressure is based on. According to the specific geological conditions, numerical simulation method is used to model and analyze the stress and displacement evolution law of roadway surrounding rock under the disturbance of dynamic load of different intensity. The results show that with the increase of the distance between the earthquake source and the roadway, the effect of roadway roof and floor decreases sharply, while the effect of the two bands decreases proportionally.
【作者单位】： 瓦斯灾害监控与应急技术国家重点实验室;中煤科工集团重庆研究院有限公司;中国矿业大学(北京)资源与安全工程学院;
【基金】：“十三五”重点研发计划(2016YFC0801404) 中国煤炭科工集团科技创新基金计划(2013ZD002)
【分类号】：TD324
，
本文编号：2175662
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