摘要
针对王家塔煤矿101工作面开采过程中辅助运输巷顶板受采动影响变形破坏严重、支护体失效、后期支护维护困难等问题,以邻近201工作面开采为工程背景,结合数值模拟和三维激光扫描技术现场实测等综合方法,监测获取201工作面推进过程中辅助运输巷顶板变形规律,评估巷道支护方案的有效性,阐述三维激光扫描技术动态监测井巷变形工程中的应用情况。研究结果表明:井下条件复杂,有效扫描距离减少,点云密度下降严重,建议井巷监测工程中扫描仪设站距离不宜超过50 m;三维扫描监测结果显示顶板发生不均匀形变,总体形变量较小,支护方案效果明显;随着201工作面推进,巷道顶板形变值逐渐增加,应力沿工作面推进方向传递,邻近采空区区域处最先发生形变,监测结果与理论相符。
During the mining process of 101 working face in Wangjiata coal mine,the roof of roadway was severely deformed and damaged,leading to the failure of the ground support,by using a comprehensive methods of numerical simulation,three-dimensional laser scanning technology and field measurement,the roof deformation of roadway during the advancing process of 201 working face was monitored,the effectiveness of roadway support scheme was evaluated,and the application of three-dimensional laser scanning technology in dynamic monitoring of roadway deformation engineering was elaborated.The results show thatthe conditions in the roadway are complex,the effective scanning distance is reduced,and the point cloud density is seriously reduced.It is recommended that the distance between the scanner and the station in the roadway monitoring project should not exceed 50 m;The 3D scanning monitoring results show that the roof is unevenly deformed.The deformation variable is subtle,and the effect of the supporting scheme is significant.With the advancement of the 201 working face,the deformation value of the roof of the roadway gradually increases,and the stress is transmitted along the advancing direction of working face.The deformation occurs first in the area near the gob.The monitoring results are consistent with the theory.
作者
郭良林
周大伟
张德民
周宝慧
GUO Lianglin;ZHOU Dawei;ZHANG Demin;ZHOU Baohui(School of Environment and Surveying,China University of Mining and Technology,Xuzhou 221116,China;Key Laboratory of Resources and Environmental Information Engineering of Jiangsu Province,Xuzhou 221116,China;Xinneng Mining Industry Corporation Limited,Ordos 017000,China)
出处
《采矿与岩层控制工程学报》
北大核心
2021年第2期38-45,共8页
Journal of Mining and Strata Control Engineering
基金
国家自然科学基金青年基金资助项目(51604266)。
关键词
三维激光扫描技术
工作面回采
巷道支护
巷道变形规律
3D laser scanning
longwall mining
roadway support
roadway deformation characteristics
