基于采动应力场与微震活动性的岩体稳定性分析 - Ingenta Connect.PDF

See discussions, stats, and author profiles for this publication at: /publication/263448692 Analysis of surrounding rock stability based on mining stress field and microseismicity Article in Meitan uebao/Journal of the China Coal Society · February 2013 CITATIONS READS 3 35 6 authors, including: Q.L. Yu Peitao Wang Northeastern University (Shenyang, China) University of Science and Technology Beijing 76 PUBLICATIONS 235 CITATIONS 34 PUBLICATIONS 72 CITATIONS SEE PROFILE SEE PROFILE Some of the authors of this publication are also working on these related projects: FRACTURE NETWORK ENGINEERING View project All content following this page was uploaded by Q.L. Yu on 17 August 2015. The user has requested enhancement of the downloaded file. All in-text references underlined in blue are added to the original document and are linked to publications on ResearchGate, letting you access and read them immediately. 　 第38卷第2期 煤　 　 炭　 　 学　 　 报 Vol.38　 No.2　 　 2013年 2月 JOURNAL OF CHINA COAL SOCIETY Feb.　 2013　 - - - 　 　 文章编号:0253 9993(2013)02 0183 06 基于采动应力场与微震活动性的岩体稳定性分析 张鹏海,杨天鸿,郑　 超,于庆磊,刘洪磊,王培涛 (东北大学 资源与土木工程学院,辽宁沈阳　 110819) 摘　 要:为了研究采矿活动中的应力场、微震活动规律与围岩稳定性之间的关系,依托石人沟铁矿 工程实例,详细分析该矿15 号勘探线附近区域地下空区形成及露天坑内排过程中围岩体内部微破 裂的产生、聚集及演化规律。 利用有限元软件ANSYS 建立力学模型,模拟不同采矿活动中的应力 场分布。 然后通过对比同一时期应力场与微震事件分布状态揭示应力场与微震活动性之间的关 系:应力状态的改变会诱发岩体内部微破裂(微震活动性)的产生,应力集中会引起微震事件的区域 性聚集。 结合现场岩体地质状况,发现高能量微震事件大量聚