Forecasting of high stress Distribution in pillar zone of deep multi-coal seam using microseismic me

来源 :2014年中国地球科学联合学术年会 | 被引量 : 0次 | 上传用户:xinxinxiangrong1
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
  The challenges of deep mining arenot only the “three high and one disturbance”,but also kinds of pillars formed by overlying residualcoal seam and protect pillar of main district rise and dip especially in multi-coal seam which can lead to excessively high abutment stress.On this occasion dynamic disasters such as rock bursts and mining tremor are increasing sharply compared to shallow mining that severely threaten the safety and efficiency of resource recovery in deep collieries.Forecasting the distribution and evolution rules with mining advance is the key for dynamic disaster control.Based on the positive correlation between stress and velocity of seismic wave,we utilize the three dimensional passive tomography inversion of mining microseismicity to study the method for predicting the high stress zones.The classification model of high stress was established and the corresponding index also formulated based on theseismic velocity.Based on this model,the evolution of stress field with coal extraction was studied and the concentration area and degree were identified.At the same time we proposed a method and an evaluation model for testing the destress effect used seismic velocity inversion,therefore realized the active control of high stress zones and dynamic optimization of destress.The research results provide a basis and guide as well as heighten the accuracy andefficiency remarkably for prediction and control of dynamic disasters in deep coal mine,in field test and application have proved the excellent effects.
其他文献
当前高校图书馆员阅读数量偏少,阅读质量不高,阅读专业性不强,阅读存在随意性和无计划性,造成了高校图书馆员的阅读危机现象;要改变这样的局面,高校图书馆员必须提高对阅读重
文中以广西梧州职业学院图书馆电子阅览室应用青葡萄云终端为例,对传统电子阅览室的现状进行了对比分析,介绍桌面虚拟化系统特点和青葡萄云终端产品规格参数,并提出了解决方
本文在分析高职院校图书馆读者活动的现状及存在的问题的基础上,提出建立层级读者活动体系的构想,并针对如何建立图书馆层级活动体系进行了阐述,以期为高职院校图书馆读者活
本文从崇左市(区)县级公共图书馆的发展以富民安边为基调,共建图书文化阵地.树立图书馆服务理念、形象,加强横向联系和对外交流,融合多种实践经验,加强图书馆的宣传、讲座等
视听艺术顾名思义,除了视觉还有听觉,虽然视觉是最直观的信息表达,但感情的迸发在很大程度上依赖声音艺术设计.文章着眼于通过对现有电影声音叙事手法和声音艺术设计的研究,
本文对目前院校图书馆移动信息服务的主要类型进行了介绍,分析了服务方式百花齐放,但缺乏激励机制;服务内容涵盖全面,但受众面窄等存在的问题,并提出了自己对移动信息服务在院校
思维导图是近年来被广泛应用于教学领域的一种思维辅助手段。因为学科知识零散,难度大,初中英语教学一直不能收到理想效果。思维导图运用到初中英语教学中,可以让学生更扎实
本文探讨了DNA重组乙型肝炎疫前对高危新生儿的安全性、免疫原性和保护效力.该疫苗为酵母源性乙型肝炎疫苗,是将乙型肝炎病毒(HBV)adw_2亚型S-基因引入酿酒酵母细胞,表达出2
努力提高馆员的信息素养,是图书馆馆员在新时期实现自身职业价值的必然要求.本文从信息素养的定义出发,探讨信息时代图书馆馆员必须提高自身信息素养的必要性;指出了信息时代
中国传统文化源远流长,历史悠久,是中华民族的瑰宝和社会发展的内在动力,也是当今社会手工艺继承创新的重要来源和物质基础.随着社会经济的不断发展,民族文化和民族手工艺的