Classification of microseismic events in high stress zone

来源 :Mining Science and Technology | 被引量 : 0次 | 上传用户:sky011
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
For the purpose of having a better understanding of failure mechanisms of rock fracturing in mines, the equivalent point source models of tensile, shear and explosive seismic events were established, and the relationship between far-field seismic displacements of the waves and the corresponding equivalent forces were analyzed as well. Based on the results of a microseismic monitoring carried out in the mining progress of 9202 working face under the upper remnant coal pillar in Sanhejian Mine, the waveform features of the seismic events associated with different failure modes were further analyzed. The results show that the signals corresponding to different failure mechanisms have different radiation patterns of the seismic displacements, and different characteristics in waveform features, such as dominant frequency, energy released, the ratio of S- to P-wave energy, and so on. In addition, the rock burst happened in the high stress zone is mainly the result of the strong shear fracturing in the mining process. The results of this study have significantly improved the understanding of the characteristics of the failures associated with underground mining, and will greatly benefit the prevention and control of rock burst hazards in burst-prone mines. For the purpose of having a better understanding of failure mechanisms of rock fracturing in mines, the equivalent point source models of tensile, shear and explosive seismic events were, and the relationship between far-field seismic displacements of the waves and the corresponding equivalent forces were analyzed as well. Based on the results of a microseismic monitoring carried out in the mining progress of 9202 working face under the upper remnant military pillar in Sanhejian Mine, the waveform features of the seismic events associated with different failure modes were further analyzed. results show that the signals corresponding to different failure mechanisms have different radiation patterns of the seismic displacements, and different characteristics in waveform features, such as dominant frequency, energy released, the ratio of S- to P-wave energy, and so on. In addition, the rock burst happened in the high stress zone is mainly the result of the strong shear fractur ing in the mining process. The results of this study have significantly improved the understanding of the characteristics of the failures associated with underground mining, and will greatly benefit the prevention and control of rock burst hazards in burst-prone mines.
其他文献
在豫昌小秦岭脚下有这样一个小山村一灵宝市故县镇尚家湾村。一座座鳞次栉比、漂亮整洁的农家楼房掩映在绿树丛荫中,宽阔平坦的柏油路从农户的门前平铺而过,村组主干道路上
“三个代表”同马克思列宁主义、毛泽东思想和邓小平理论一脉相承,反映了当代世界和中国的发展变化对党和国家工作的新要求。“三个代表”是我们党的立党之本、执政之基、力
处在世纪之交,江泽民总书记向中国共产党人提出了“三个代表”的重要思想。这一重要思想,从根本上回答了我们应该建设一个什么样的党、怎样建设党的问题,是我们的立党之本,
介绍了春小麦新品种宁春50号的选育、品种特性、产量表现,并从播种、培肥、种植模式选择、灌水、病虫草害防治、适期收获等高产栽培技术方面进行了总结。 The selection, va
[Objective] To induce roots of Scutellaria baicalensis Georgia by Agrobaaerium rhizogenes strains 1.2556 and optimize culture conditions of hairy root using res
“空谈误国,实干兴邦”,这是集古今丰富经验、沉痛教训而得出的至理名言。这些年来,我们党大力提倡真抓实干、力戒空谈,也取得了一定的成效,但空谈这一顽症在一些地区、一些部门的
请下载后查看,本文暂不支持在线获取查看简介。 Please download to view, this article does not support online access to view profile.
新的时代需要新的作风。我们正处在一个伟大变革的时代,创新已成为时代主题,推动着各项事业的迅猛发展。创新的时代呼唤创新的作风。最近,江泽民同志在为全国干部培训教材作的《
创新是一个民族的灵魂,是一个国家兴旺发达的不竭动力,也是一个政党永葆生机和活力的源泉。创新包括理论创新、制度创新、科技创新、文化创新、领导方式和领导方法创新等。
欧洲食品安全局(EFSA)指出,法国禁止种植孟山都抗虫转基因玉米MON810的法令是没有科学依据的。今年2月,法国根据欧盟转基因食物和饲料条例(1829/2003)中第34条采取了紧急措施