基于煤岩结构面剪切作用下半煤岩巷变形机制及控制研究  

Deformation mechanism and control technology for semi coal and rock roadway with structural plane under shearing force

作　　者：王猛[1,2] 肖同强[1] 高杰[2] 刘俊领[1] 

机构地区：[1]河南理工大学能源科学与工程学院,河南焦作454000 [2]中国矿业大学煤炭资源与安全开采国家重点实验室,江苏徐州221116

出　　处：《采矿与安全工程学报》2017年第3期527-534,共8页Journal of Mining & Safety Engineering

基　　金：中国矿业大学煤炭资源与安全开采国家重点实验室开放基金项目(SKLCRSM15KF03);河南省教育厅科学技术研究重点项目(16A440004);中央高校基本科研业务费专项资金项目(2011QNB01)

摘　　要：采用现场调查、数值模拟、理论分析与工业性试验等方法,总结了半煤岩巷道变形特征,指出煤帮为巷道变形破坏的薄弱环节;分析了煤岩结构面力学参数对煤帮稳定性影响,得到煤岩层间剪切变形随结构面参数的增加呈负指数关系减小;揭示了该类巷道变形机制包括煤岩结构面层间剪切破坏机制与结构面层间失稳诱发机制,指出巷道维护的关键在于控制煤岩结构面的层间剪切滑移变形;基于倾斜穿层锚索对煤岩结构面加固机制的分析,开发了以强力支护、巷帮倾斜穿层锚索为核心的围岩控制技术。工业性试验结果显示,煤岩结构面层间剪切变形得到有效控制,巷道维护效果较好。Through comprehensive research methods of field investigation, numerical simulation, theo- retical analysis, and industrial test, the deformation characteristics of semi coal and rock roadway was summarized, and it was found that the coal rib was the weak part for deformation damage in the whole roadway. Also the influence of mechanical parameters of structural plane between coal and rock on the stability of coal rib was analyzed, and it was derived that the shear deformation between the coal and rock would decrease in a negative exponent relation with the increase of the structural plane parameters. Consequently the deformation mechanism of similar roadways including the shear damage mechanism of plane between the coal and rock and the instable inducement mechanism was revealed and mean- while, the key for maintaining the roadway was found to be controlling the shear slip deformation of structural plane between coal and rock. Based on the analysis on reinforcement mechanism for struc- tural plane by inclined cross-layer cables, surrounding rock control technology was developed throughcombining the high force support and inclined cross-layer cables on coal ribs. The industrial test results have shown that the shear deformation of structural plane between the coal and rock has been controlled effectively, and has achieved a desirable effect of roadway control.

关 键 词：薄煤层 半煤岩巷道 煤岩结构面 变形机制 控制技术 

分 类 号：TD353[矿业工程—矿井建设]