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- Rock burst criteria 岩爆
- So, EME can be applied to forecast the rock burst in coal mine. 研究表明，电磁辐射基本上随著加载及变形速率的增加而增强；
- Criterion for Rock Burst in Tunnel and Its Forecast 隧道岩爆的判据与预测预报
- Beside this,the paper also discussed the reason why rock burst easily happened aro... 分析了煤岩层摩擦滑动的基本形式，探讨了粘滑的产生机理，并以此解释冲击地压的发生机理。
- Finally, assessing the rank of the danger of rock burst applying the EME was introduced by an example. 通过实例介绍了电磁辐射法评定煤矿冲击矿压危险等级的应用情况。
- With the increase of mining depth,the possibility for rock burst increases correspondently. 随着煤矿开采深度的增加,冲击地压危险越来越大,已成为严重威胁矿井安全生产的主要灾害。
- The computed result indicates the acceleration curve and the speed curve appears change suddenly in the rock burst. 计算结果表明,发生岩爆时,巷道围岩的速度曲线和加速度曲线出现突变。
- Investigating valley stress field is of importance to the researches on mechanism and prediction of rock burst. 深入研究沟谷应力场的一般规律对于岩爆机理和岩爆预测研究是重要的。
- The rock burst break intensity will be stronger with the increasing of excavating depth. 随采深增加，岩爆的烈度等级加大。岩爆的发生存在一个临界深度。
- The monitoring result was very similar to actual rock burst and the error of orientation result was minor to prescriptive upper limit. 此矿震监测定位系统的监测结果与实际矿震十分吻合，定位结果小于规定的误差上限。
- Practice proves that EME method use to check effectiveness and Unload with borehole to prevent rock burst is reasonable. 通过现场的应用证明了电磁辐射法对岩爆的危险性进行评价及预测预报、爆破卸压措施防治岩爆发生是可行、有效的。
- The electromagnetic radiation(EMR) technology can forecast coal or rock dynamic disaster,such as coal and gas outburst,rock burst etc. 煤岩电磁辐射监测技术可以预测、预报矿井冲击地压和煤与瓦斯突出等煤岩动力灾害。
- The study results indicate that rock burst can not occur in this haulageway, which are well agreeable with the practice at site. 计算表明，该巷道围岩不满足产生冲击地压的条件，与现场实际情况相吻合。
- According to the location of rupture sources, impacting disasters had been divided into rock burst, pressure bump and mine earthquake. 根据硐室围岩破裂源的空间位置，将冲击灾害划分为岩爆、冲击地压和矿震三大类。
- Rock burst is one of the severest natural calamities in coal mining;and its energy variation regular is always studied emphatically. 摘要冲击地压是煤矿生产中遇到的严重自然灾害之一，其能量变化规律一直是人们研究的重点。
- The main key stratum that is made up of the hard stratum covering over the coal seam has a great influence on rock burst. 摘要煤层上覆坚硬厚层岩层组成的主关键层对冲击矿压的发生具有强烈的影响。
- Roof structure, especially hard and thick sandstone roof, is one of the main factors lead to the occurrence of rock burst. 顶板岩层结构,特别是煤层上方坚硬厚层砂岩顶板是影响冲击矿压发生的主要因素之一。
- The prevention and control of rock burst are of great significance for safely exploiting deep deposit in high-stress area. 摘要岩爆的预防和控制对深部高应力区矿床的安全开采具有十分重要的意义。
- The prerequisite of rock burst occurrence is that the elastic energy in coal and rock mass around coal mine roadway and stope has accumulated enough. 冲击地压发生的前提是矿山井巷和采场周围的煤岩体中储存了足够的弹性能。
- EME value increase consecutively before the rock burst, or first increases then declines, and then develops the tendency to increase. 冲击矿压发生前的一段时间，电磁辐射连续增长或先增长，然后下降，之后又呈增长趋势；
