复杂环境下急倾斜特厚煤层安全开采  

Safety top-coal-caving of heavy and steep coal seams under complex environment

作　　者：来兴平[1,2] 王宁波 胥海东[1,2] 漆涛 曹建涛[1,2] 蒋东晖 

机构地区：[1]西安科技大学能源学院,西安710054 [2]教育部西部矿井开采及灾害防治重点实验室,西安710054 [3]神华新疆能源有限责任公司,乌鲁木齐830027

出　　处：《北京科技大学学报》2009年第3期277-280,共4页Journal of University of Science and Technology Beijing

基　　金：国家自然科学基金资助项目(No.10772144;No.10402033)

摘　　要：采用理论分析、数值计算等综合方法,研究了苇湖梁煤矿+579E2EB1+2急倾斜煤层(64°)高阶段(54m)综放面开采中出现的采空区顶板坍塌与气体超限的问题.现场开采试验表明,采取快速推进、控制均匀放煤、优化通风系统及主动综合防瓦斯等有效措施,遏制动力学灾害并确保安全开采.The seam angle is 64^＋ and the mining level height is 54 m at the ＋ 579E2EB1＋ 2 top-coal-caving working face in Weihuliang Mine in northwestern China. Theoretical analysis, numerical calculation and field test were used to study roof collapse and gas overlimit in mined-out area during mining on the working face. The results show that fast mining, control symmetrical top-coal caving in dipping and strike directions, optimizing the ventilation system, and the initiative in preventing gas are valid for safety mining.

关 键 词：复杂环境 急倾斜特厚煤层 开采扰动区 层裂结构 动态失稳 

分 类 号：TD325.3[矿业工程—矿井建设]