基于能量分析的岩爆倾向井巷支护方法  

Method on rockburst shaft and roadway support based on energy analysis

作　　者：孙扬[1] 郭相参[1] SUN Yang;GUO Xiangcan(China ENFI Engineering Corporation,Beijing 100038,China)

机构地区：[1]中国恩菲工程技术有限公司

出　　处：《中国矿业》2019年第A02期369-372,共4页China Mining Magazine

基　　金：“十三五”国家重点研发计划项目资助(编号：2016YFC0600803)

摘　　要：国内多个金属矿正在建设超1500m深的井巷工程,随之遇到的岩石力学问题更加突出。多数金属矿具有构造复杂、岩质坚硬、地应力高的特征,采矿活动及井巷工程开挖扰动易引发岩爆灾害发生。岩爆成为深井矿山开采建设主要工程灾害之一,应对岩爆成为深井开采的首要任务之一。文中基于能量分析,揭示了岩体发生岩爆的破坏机理;详细分析了岩爆倾向井巷支护机理及不同支护结构单元的性能指标,给出了井巷支护克服岩爆动能的确定方法,以及应对不同规模岩爆类型选取支护单元的原则。在岩爆倾向性明显的深部金属矿开展井巷工程活动,应用能量分析法能较合理地初步确定支护结构参数。A number of metal mines in China are building a roadway with a depth of more than 1500m,and the rock mechanics problems encountered will be more prominent.Most metal mines have the characteristics of complex geological structure,hard rock and high ground stress.Mining activities and excavation of shafts and roadway are easy to cause rockburst disasters.Rockburst has become one of the major engineering disasters in deep mine mining,and handling rockburst has become one of the primary tasks of deep mining.Based on the energy analysis,the failure mechanism of rock mass rockburst is revealed.The support mechanism and units are analyzed in detail that support mechanism of rockburst potential shaft and roadway and the performance index of different supporting structural units.The method which calculating support bearing energy of the rockburst and the selection of support unit for different scales of rockburst types are given.In deep mine metal mine with obvious rockburst tendency,the energy analysis method can be used to determine the support structure parameters reasonably.

关 键 词：岩爆能量分析 岩体蓄能 支护单元 

分 类 号：TD353[矿业工程—矿井建设]