矿岩散体成拱影响下软岩巷道变形破坏特征研究  

Distortion and failure characteristics of soft rock roadway influenced by arch of ore rock

作　　者：孙金海[1,2] 明建[1,2] 毛市龙[1,2] 李智慧 SUN Jinhai;MING Jian;MAO Shilong;LI Zhihui(State Key Laboratory of High-efficient Mining and Safety of Metal Mines,Ministry of Education,University of Science and Technology Beijing,Beijing 100083,China;School of Civil and Resource Engineering,University of Science and Technology Beijing,Beijing 100083,China)

机构地区：[1]北京科技大学金属矿山高效开采与安全教育部重点实验室,北京100083 [2]北京科技大学土木与资源工程学院,北京100083

出　　处：《有色金属（矿山部分）》2020年第2期24-29,共6页NONFERROUS METALS(Mining Section）

摘　　要：针对矿岩散体成拱对软岩巷道的稳定性产生影响的问题,对不同成拱结构条件下巷道变形破坏规律进行了研究。以矿山岩石力学理论为指导,对巷道稳定性受散体成拱影响的力学机理进行了理论分析。采用三维数值模拟实验方法,对不同的散体成拱的方式进行了实验研究,获得了成拱条件下软岩巷道的稳定性特征。研究结果表明当出现散体成拱现象时,成拱空区与巷道之间的塑形区将显著增大,从而加剧了巷道的变形破坏。In view of the influence of arch of ore rock on the stability of the soft rock roadway,the study on the law of deformation and failure of roadway under different arching structure conditions was carried out.With the guidance of theories of mine rock mechanics,the mechanics mechanism of the influence of ore rock arch on the stability of the soft rock roadway was analyzed.By means of the numerical simulation experiment,the stability characteristics of soft rock roadway under different arching structures were obtained.Experimental results showed that the plastic area between the goaf and the roadway increased significantly under arching structure conditions,which aggravated the deformation and failure of the roadway.

关 键 词：软岩巷道 矿岩拱 巷道变形机理 数值模拟 

分 类 号：TD322[矿业工程—矿井建设]