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急斜特厚煤层动力学失稳现场声发射监测

Acoustic emission monitoring for dynamic destabilization of heavy and steep coal seam

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【Author】 ZHANG Wei1,2,LAI Xing-ping1,2,QI Tao3,JIANG Dong-hui3,ZHANG Ge3,TIAN Ying-nan3 (1.College of Energe Science and Engineering,Xi’an University of Science and Technology,Xi’an 710054,China ;2.Ministry of Education’s Key Lab of Western Minging and Disater Prevention and Control,Xi’an 710054,China;3.Shenhua-Xinjiang Energy Co.Ltd.,Urumchi 830027,China)

【机构】西安科技大学能源学院；教育部西部矿井开采及灾害防治重点实验室；神华新疆能源有限责任公司；

【摘要】急斜特厚煤层开采扰动区(Mining Disturbed Zone,MDZ)煤岩应力与变形规律复杂,采动影响下局部煤岩层滑移造成应力集中,使煤岩体产生"强烈"的动力学失稳与破坏。以大洪沟煤矿B3+6急斜特厚煤层综放开采为工程背景,通过现场声发射(acoustic emission,AE)监测,分析采动条件下煤岩介质动力学失稳及破坏规律,为制定解危对策提供科学依据。更多还原

【Abstract】 The movement regularity of heavy and steep coal seam disturbed mining zone is complex.Because of the formation of mining strata partial slip gravity stress,the influence caused by coal and rock stress concentration produces "strong" dynamic destabilization and destruction.Taking B3 +6 heavy and steep coal seam fully-mechanized sublevel caving mining in DAHONG coal mine as engineering background,the dynamic destabilization and destruction regularities of coal and rock are analyzed by acoustic emission monitoring for formulating scientific measures.更多还原

【关键词】急斜特厚煤层；动力学失稳；声发射；监测预报；
【Key words】 heavy and steep coal seam； dynamic destabilization； acoustic emission； monitoring and prediction；

【基金】国家自然科学基金(No.10772144,10402033);教育部博士点基金(20096121110001);陕西省重点实验室重点项目(09JS018)

【文献出处】西安科技大学学报 ,Journal of Xi’an University of Science and Technology , 编辑部邮箱 ,2011年03期

【分类号】TD325
【被引频次】20
【下载频次】189

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