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首页> 外文期刊>Rock Mechanics and Rock Engineering >Case Studies of Rock Bursts Under Complicated Geological Conditions During Multi-seam Mining at a Depth of 800 m
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Case Studies of Rock Bursts Under Complicated Geological Conditions During Multi-seam Mining at a Depth of 800 m

机译：多煤层挖掘后复杂地质条件下岩石爆裂的案例研究，深度为800米

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摘要

A serious rock burst ("4.19" event) occurred on 19 April 2016 in the No. 4 working face of the No. 10 coal seam in Da'anshan Coal Mine, Jingxi Coalfield. According to the China National Seismological Network, a 2.7 magnitude earthquake was simultaneously recorded in this area. The "4.19" event resulted in damage to the entire longwall face and two gateways that were 105 m in long. In addition, several precursor bursts and mine earthquakes had occurred between October 2014 and April 2016 in the two uphill roadways and the No. 4 working face. In this paper, the engineering geological characteristics and in situ stress field are provided, and then the rock burst distributions are introduced. Next, the temporal and spatial characteristics, geological and mining conditions, and other related essential information are reviewed in detail. The available evidence and possible explanations for the rock burst mechanisms are also presented and discussed. Based on the description and analysis of these bursts, a detailed classification system of rock burst mechanisms is established. According to the main causes and different disturbance stresses (i.e., high/low disturbance stresses and far-field/near-field high disturbance stresses), there are a total of nine types of rock bursts. Thus, some guidelines for controlling or mitigating different types of rock bursts are provided. These experiences and strategies not only provide an essential reference for understanding the different rock burst mechanisms, but also build a critical foundation for selecting mitigation measures and optimizing the related technical parameters during mining or tunnelling under similar conditions.
机译：严重的摇滚爆炸（“4.19”活动）于2016年4月19日发生在大山煤矿的第10次煤层的4号工作面前发生的。据中国国家地震网络介绍，该地区同时录制了2.7幅度的地震。 “4.19”事件导致整个长墙面的损坏，长度为105米的两个网关。此外，在2014年10月和2016年4月在两个上坡路和第4号工作面前发生了几种前体爆发和矿山地震。在本文中，提供了工程地质特性和原位应力场，然后引入了岩爆分布。接下来，详细审查时间和空间特征，地质和采矿条件和其他相关基本信息。还介绍和讨论了岩爆机制的可用证据和可能的解释。基于这些突发的描述和分析，建立了岩突机制的详细分类系统。根据主要原因和不同的干扰应力（即，高/低扰动应力和远场/近场高扰动应力），共有九种岩石爆裂。因此，提供了用于控制或缓解不同类型的岩突发的一些指导。这些经验和策略不仅为了解不同的摇滚突发机制提供必要的参考，而且还为在相似条件下选择缓解措施并在采矿或隧道期间优化相关技术参数来建立一个关键的基础。

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