13101综采工作面快速掘进巷道围岩变形观测
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摘要
为了分析13101综采工作面软岩段快速掘进过程中的围岩变形情况和巷道支护效果,采用现场实测的方法对巷道表面位移和顶板离层情况进行监测分析。从监测的结果可以看出:巷道的围岩变形主要发生在掘后的7 d内,占巷道总变形量的大约70%;巷道掘后的第二天是巷道围岩变形量的速度峰值,两帮位移变形量的平均速度峰值大约是12 mm,顶板位移变形量的平均速度峰值大约是11 mm。对比本矿井历史监测数据,说明该项快速掘进支护技术应用效果良好。
In order to analyze surrounding rock deformation and roadway support effect in rapid excavation process of soft rock section in 13101 fully mechanized mining face, field measurement method was used to monitor and analyze roadway surface displacement and roof separation. The results showed that deformation mainly occurred within 7 d after excavation,accounting for about 70% of total deformation of roadway; the second day after excavation was the peak velocity of deformation of surrounding rock, average velocity peak of two sides and roof displacement deformation were about 12 mm and 11 mm respectively. Comparing with historical monitoring data, it was clear that effect of this rapid excavation support technique was good.
In order to analyze surrounding rock deformation and roadway support effect in rapid excavation process of soft rock section in 13101 fully mechanized mining face, field measurement method was used to monitor and analyze roadway surface displacement and roof separation. The results showed that deformation mainly occurred within 7 d after excavation,accounting for about 70% of total deformation of roadway; the second day after excavation was the peak velocity of deformation of surrounding rock, average velocity peak of two sides and roof displacement deformation were about 12 mm and 11 mm respectively. Comparing with historical monitoring data, it was clear that effect of this rapid excavation support technique was good.
引文
[1]马睿.巷道快速掘进空顶区顶板破坏机理及稳定性控制[D].徐州:中国矿业大学,2016.
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[2]崔伟.大断面全煤巷道安全快速掘进支护技术研究[D].呼和浩特:内蒙古科技大学,2015.
[3]李学彬.大断面煤巷快速掘进二次支护理论研究[J].煤矿开采,2015(1):51-55.
[4]王修旭.岩巷综掘合理支护技术及施工工艺研究[D].合肥:安徽建筑大学,2014.
[5]侯社伟,谷松山.半煤岩巷快速掘进技术及合理支护参数的研究[J].中州煤炭,2012(11):20-23.