摘要
通过采用微震监测系统对新河煤矿530采区煤岩活动情况进行监测,研究了地质构造、顶板破裂高度、工作面推进速度及爆破与微震活动的关系,研究结果表明:新河煤矿微震事件多集中于断层、褶曲轴部,微震活动受地质构造影响较大;在"见方"位置顶板破裂高度达到90m,在褶曲轴部,顶板破裂高度达到110m;工作面推进速度超过4m/d后,微震活动与推进速度呈明显的正相关性;在爆破作业后微震活动有明显变化,微震监测能够作为一种爆破卸压效果检验的手段。
Coal and rock movement of 530 mining area of Xinhe coal mine was monitored by microseismic system,then the relationship between geological structure,broken height of roof,advance speed of working face,blasting and microseismic movement were studied,the results showed that most of microseismic incidents appeared in fault,axial position of fold and microseismic movement was influenced more by geological structure,the broken height of roof reached 90 m in‘ jianfang＇position,and it reached about 110 m in fold axial position,when advance speed of working face exceeded 4m/d,obviously positive correlation property appeared between microseismic and advance speed, microseismic movement was different after blasting, microseismic monitoring was an effectively method for unloading by blasting.
出处
《煤矿开采》
北大核心
2017年第5期78-80,共3页
Coal Mining Technology
基金
"十三五"国家重点研发计划项目(2016YFC0600708)
关键词
微震
地质构造
推进速度
爆破卸压
microseismic
geological structure
advance speed
unloading by blasting
