Spatiotemporal evolution rule of rocks fracture surrounding gob-side roadway with model experiments

作     者：Li Yuanhai Zhang Qi Lin Zhibin Wang Xiaodong 

作者机构：astate Key Laboratory for Geomechanics and Deep Underground Engineering China University of Mining & Technology Xuzhou 221116 China School of Mechanics and Civil Engineering China University of Mining & Technology Xuzhou 221116 China School of Civil Engineering Southeast University Nanjing 210096. China Changsha Engineering and Research Institute Ltd. of Nonferrous Metallurgy Changsha 410011 China 

出 版 物：《International Journal of Mining Science and Technology》 (矿业科学技术学报（英文版）)

年 卷 期：2016年第26卷第5期

页      面：895-902页

核心收录：

学科分类：081901[工学-采矿工程] 0819[工学-矿业工程] 08[工学] 

基　　金：supported by the National Natural Science Foundation of China (No. 51174197) the Major State Basic Research Development Program of China (No. 2014CB046905) State Key Laboratory for Geo Mechanics and Deep Underground Engineering (CUMT) (No. SKLGDUEK1503) the ‘Qing Lan’ Project of Jiangsu Province 

主　　题：Model experiment Digital photogrammetry Gob-side roadway Spatiotemporal evolution rule Stability control and combined support 

摘      要：A series of plane-strain physical model experiments are carried out to study the spatiotemporal evolution rule of rocks fracture surrounding gob-side roadway, which is subjected to the pressure induced by the mining process. The digital photogrammetry technology and large deformation analysis method are applied to measure the deformation and fracture of surrounding rocks. The experimental results indicate that the deformation and fracture of coal pillars are the cause to the instability and failure of the surrounding rocks. The spatiotemporal evolution rule of the rock deformation and fracture surrounding gob-side roadway is obtained. The coal pillar and the roof near coal pillar should be strengthened in support design. The engineering application results also can provide a useful guide that the combined support with wire meshes, beam, anchor bolt and cable is an effective method.