深埋矿体开采顺序浅探  

Study on the Mining Sequence of Deep-Buried Orebodies

作　　者：刘炜[1,2] 陈勇 

机构地区：[1]北京科技大学 [2]广西大学 [3]核工业第四研究设计院

出　　处：《金属矿山》2009年第7期20-23,共4页Metal Mine

摘　　要：随着矿山开采向深部转移,出现的地压问题也日益增多,主要表现为冒顶、片帮及岩爆等。针对出现的这类问题,对深埋矿体的阶段开采顺序进行了研究,利用2D-σ程序对2种不同的阶段开采顺序进行了模拟,对其应力场及位移场进行分析,模拟结果表明采用上行式开采顺序,可以较好地改善应力及位移状态,减弱矿山深部开采出现的冒顶及片帮。With the increasing mining depth, the geopressure-caused problems are increasing, mainly including roof caving, wall falling and rockburst. In view of these, the paper studies the staged mining sequence of deep-buried orebod- ies, simulates with 2D-σ program two different staged mining sequences, and analyzes their stress field and displacement fields. The simulation result indicates that the upward mining can better improve the stress and displacement so as to weak- en the roof caving and wall falling in deep mining.

关 键 词：上行式开采 下行式开采 应力 位移 

分 类 号：TD853.331[矿业工程—金属矿开采] TU473.2[矿业工程—矿山开采]