摘要
矿井2052工作面靠近五煤风氧化带,巷道掘进过程中出现不同程度的煤层冲刷变薄甚至消失,为了解工程地质情况,在胶带巷掘进迎头和侧帮采用井下三分量多测线联合观测,将现场采集的数据处理后,绘制出相应的地震剖面和三维数据体视图,据此推算出迎头前方约90-120m存在异常反射带,侧帮异常界面深度介于24-36m之间。经现场钻探验证分析,风氧化带边界位于胶带巷靠工作面一侧30m范围内,而迎头未能探测到煤层,建议在原探点掘进约50m后再进行探测。
As the working face was closed to oxidation zone of No.5 coal seam,during the roadway excavation,condition of coal seam wash out appeared,the coal seam became thinner or even completely washed out,to understand the engineering geology condition,three- components and multiple survey lines observation system was applied,with parallel survey lines arranged on heading face and rib.After datum processing,the corresponding seismic sections and 3D datum views were drew,according to which conclusions were calculated that,the abnormal reflection bands locate at the 90 -120m ahead of the heading face,and at 24 - 36 m deep within the rib.According to field measurement,the oxidation zone boundary located within 30 m of working face at conveyor lane side,as coal seam was not detected right ahead the heading face,detect at another 50 m heading forward was suggested.
出处
《煤炭工程》
北大核心
2015年第1期53-56,共4页
Coal Engineering
基金
北京市教育委员会科技计划面上项目(PXM2010 014225 097947)
关键词
高分辨率地震反射
超前探
风氧化带
巷道掘进
high resolution seismic wave reflection
advance detection
oxidation zone
roadway excavation
