声发射监测评价冲击地压危险状态的机制及应用研究  

Rock Burst Risk State Monitoring Evaluation Mechanism with Acoustic Emission and It's Application

作　　者：杨磊[1,2] 冯美华[1,2] YANG Lei;FENG Mei-hua(Coal Mining & Designing Department, Tiandi Science & Technology Co. , Ltd. , Beijing 100013, China;Mining Institute, China Coal Research Institute, Beijing 100013, China)

机构地区：[1]天地科技股份有限公司开采设计事业部,北京100013 [2]煤炭科学研究总院开采研究分院,北京100013

出　　处：《煤矿开采》2016年第6期92-95,103,共5页Coal Mining Technology

基　　金：国家自然科学基金资助项目(51574149)

摘　　要：为了研究声发射监测技术在冲击地压危险状态评价和预警应用中的可行性,理论分析了声发射活动与煤岩损伤的关系,基于实验室测试验证了声发射指标与煤层冲击倾向性的相关性,并将研究成果应用到了现场实践。研究结果表明:声发射活动能够直接反映煤岩材料的损伤程度,声发射事件的峰值能量与煤层冲击倾向性呈正相关关系,一定程度上揭示了煤岩发生冲击破坏的能力,是评价冲击地压危险状态的基础。基于发震概率与报准率的衡量标准,现场应用声发射敏感指标地音异常系数对冲击危险状态给出了评价和预测,确定了潜在冲击危险区域和危险状态,有利于指导现场提前采取措施,降低冲击危险。In order to study the feasibility of acoustic emission monitoring technology, which apply in rockburst risk state evaluationand forewarning, the relationship between acoustic emission and coal and rock damage was analyzed, the relationship between acousticemission index and coal seam burst potential was verified by experiment, then the results were applied in field. The results showed thatcoal and rock material damage degree could be reflected immediately by acoustic emission activity, the relationship between the peakvalue of acoustic emission and coal seam burst potential was positive relationship, it revealed burst broken capacity in some degree,and its a base of rock burst risk state evaluation. Based on criterion of rock burst frequency and forecast accuracy, rock burst risk statewas evaluated and forecast by acoustic emission sensitive index rock noise abnormal index in field, then potential burst risk zone anddangerous state, it good references for taking some advanced measures in field, and burst risk was decreased.

关 键 词：声发射 冲击地压危险状态 损伤 冲击倾向性 地音异常系数 

分 类 号：TD324[矿业工程—矿井建设]