综采动压区沿空掘巷“时-空”关系分析  

An analysis of “space-time” relationship of gob-side entry driving in dynamic pressure area

作　　者：马德鹏[1] 王同旭[1] 刘阳[1] 

机构地区：[1]山东科技大学矿业与安全工程学院,矿山灾害预防控制省部共建国家重点实验室培育基地,山东青岛266590

出　　处：《采矿与安全工程学报》2015年第3期465-470,共6页Journal of Mining & Safety Engineering

基　　金：国家自然科学基金项目(51379116)

摘　　要：针对油页岩综采动压区沿空掘巷中面临的支护困难、围岩变形量大等问题,对掘进与回采的"时-空"关系、巷道支护加固方案及修复技术进行研究。基于理论及数值模拟分析,得到巷道围岩变形及应力分布规律,初步确定巷道掘进方案;结合掘进期间的矿压观测结果,确定掘进与回采合理的时空关系。追尾掘进时,巷道合理的滞后距离为136 m,滞后天数不应小于36 d;对头掘进时,巷道进入停采线的距离应小于50 m。根据围岩变形观测情况,对不同地段巷道分别设计了加固及修复方案,加固维修后的巷道能够满足生产要求,对类似条件下巷道掘进具有指导意义。In response to the problems of supporting, large deformation of surrounding rock in the process of gob-side entry driving in dynamic pressure area of fully-mechanized oil shale mining, com-prehensive analysis of space-time relationship between driving and stoping, reinforcement scheme, and repairing techniques have been carried out. To start with, based on the theory and numerical simulation analysis, the deformation and stress distribution law of surrounding rock have been obtained, and then the driving method of roadway can be initially determined;after that, based on the observation results of mining pressure, the reasonable space-time relationship between driving and stoping has been set down. When driving is conducted, the reasonable delay distance is 136 m and the lagging days should not be less than 36 days;while when driving and mining are in opposite directions, the distance crossing the stopping line should be less than 50 m. According to the result of deformation observation, reinforce-ment scheme and repairing techniques are respectively designed for different locations of roadway, and the roadway can meet the production requirements after reinforcement or repair, which shows a certain guiding significance to the gob-side entry driving under the similar conditions.

关 键 词：油页岩 沿空掘巷 动压区 时空关系 数值模拟 现场实测 

分 类 号：TD32[矿业工程—矿井建设]