急斜煤层EDZ围岩动态演化规律2D-BLOCK数值追踪模拟  

2D BLOCK based dynamic evolutionary tracking simulation to rockmass fracture upon heavy and steep seam in EDZ

作　　者：张立杰[1,2] 柴鑫[2,3] 来兴平[2,3] 蒋东晖 邹磊[2,3] 胥海东[2,3] 

机构地区：[1]北京科技大学土木与环境工程学院,北京100083 [2]西安科技大学能源学院,陕西西安710054 [3]教育部西部矿井开采及灾害防治重点实验室,陕西西安710054 [4]神华新疆能源有限责任公司,新疆乌鲁木齐830027

出　　处：《西安科技大学学报》2008年第4期613-618,共6页Journal of Xi’an University of Science and Technology

基　　金：国家自然科学基金项目(10772144;10402033)

摘　　要：急斜特厚煤层高阶段综放开采中,开采扰动区(Excavation-Disturbed-Zone,EDZ)内顶煤及采空区围岩结构动态演化规律预计是安全开采的关键保障F技术之一。对苇湖梁煤矿+579E2EB1+2急倾斜煤层(64°)高阶段(52m)综放面开采中采空区顶板坍塌现象综合认识,采用2D-BLOCK精细数值模拟程序,建立了相应的离散元数值分析模型,进行动态数值追踪模拟计算,揭示了复杂环境下急斜厚煤层开采形成的采空区坍塌规律,为现场安全开采提供了科学依据。When sub-level caving is used as an underground mining method for the exploitation of the heavy-steep seam（HSS） using high-section top-coal-caving（HSTCC） , it is key technology to dynami cal evolutionary prediction of the surrounding rock structures and top-coal collapse and their control in excavation disturbance zone （EDZ）. Using ＋ 579E2EB~ ＋2 top-coal-caving-workings at Weihuliang Mine as a case study, the seam angle is 64 and section height is 52 m. According to the comprehensive observation to dynamic collapse upon roof rock-mass of mined-out area and inherent mechanical mechanism discrimination, a method of 2D-BLOCk program has been performed, using rock-mass and rock structure characterization integrated with discrete element method （DEM） computational model. It indicated the dynamic evolutionary track and collapse regularity of mined-out-area upon the heavy-steep seam in complex environment.

关 键 词：急斜煤层 开采扰动区 2D—BLOCK程序 数值追踪模拟 动态演化规律 

分 类 号：TD315.3[矿业工程—矿井建设]