摘要
为保证轿子山煤矿井筒保护煤柱及其周边煤炭资源开采后,行人斜井井筒能够进行简单修复正常使用,利用建立数值模拟模型分析两个工作面开采条件下行人斜井井筒移动变形分布规律,通过覆岩概率积分法函数对井筒轴向和径向水平变形分布规律进行了计算。研究结果表明:首采的22909-1工作面由于开采空间有限,对行人斜井影响有限,需对于井口处进行提前加固即可,不会出现大面积的井筒损坏。而22909-2工作面开采后采动影响较为剧烈,井筒部分区域将受到拉伸或者压缩变形影响遭到破坏,尤其是“井口→140 m”段的井筒作为重点保护和加固的对象。研究结果为行人斜井的保护及提前加固提供了重要的参考。
To ensure the pedestrian inclined shaft can be repaired and used by pedestrians,after the mining of coal pillar of inclined shaft and surrounding coal resources in Jiaozishan coal mine,the numerical simulation model was established to analyze the distribution law of the movement and deformation of the pedestrian inclined shaft under two mining operation.The distribution law of axial and radial horizontal deformation of the shaft is calculated using the probability integral function of the overlyingrockstrata.The research results indicate that,the Panel 22909-1 has limited impact on pedestrian inclined shafts due to limited mining area.Therefore,it is necessary to reinforce the wellhead in advance to avoid large-scale wellbore damage.The impact of mining after the Panel 22909-2 is relatively severe,and some areas of the wellbore will be damaged due to tensile or compressive deformation,particularly in the section from"the wellhead to 140 m".This section should be a priority for protection and reinforcement.The research provides valuable insights for the protection and advance reinforcement of the pedestrianinclined shaft in the coal mine.
作者
薛阙章
张锐
许国胜
XUE Quezhang;ZHANG Rui;XU Guosheng(Guizhou Xing′an Coal Industry Co.,Ltd.,Xingyi 550000,China;School of Mining Engineering,Guizhou University of Engineering Science,Bijie 551700,China)
出处
《煤炭技术》
CAS
2024年第5期119-123,共5页
Coal Technology
基金
贵州省科技计划项目(黔科合基础-ZK[2023]一般124)
毕节市科学技术项目(毕科联合[2023]33号
毕科联合[2023]11号)
贵州省高等学校西南喀斯特地区矿井水害防治创新团队(黔教技[2023]092号)。
关键词
采动影响
井筒破坏
概率积分法
岩层移动
mining influence
wellbore failure
probability integral method
overlying rockstrata movement
