钻孔内岩石局部爆破破碎若干影响因素分析  

Analysis on Some Influencing Factors of Local Rock Fragmentation by Blasting in Drilling Hole

作　　者：季荣生[1] 冉恒谦[2] 陈庆寿[1] 王贵和[1] 周辉峰[1] 

机构地区：[1]中国地质大学〈北京〉工程技术学院,北京100083 [2]中国地质科学院勘探技术研究所,河北廊坊065000

出　　处：《探矿工程（岩土钻掘工程）》2008年第9期66-69,75,共5页Exploration Engineering:Rock & Soil Drilling and Tunneling

基　　金：中国地质大学(北京)科学钻探国家专业实验室开放课题和中国地质大学(北京)科学基金的资助

摘　　要：钻孔内小自由面条件下对岩矿石局部进行准确地爆破破碎并非易事,这一问题的解决将有助于便捷地通过钻孔获取大量的矿物岩石,提高水溶法采盐、地浸采铀的作业效率,同时使得通过钻孔开采某些具有重大潜在价值的难采矿产成为可能,这无论对钻孔取样还是钻孔采矿都具有重要的意义。论述了钻孔内岩石爆破破碎涉及的技术问题,并对钻孔内岩石爆破破碎若干影响因素进行了分析。在充分考虑各种岩矿赋存条件的基础上,采取合理的加载形式获得钻孔局部岩层较好的爆破破碎效果是可行的。To accurately blast the local rock in a borehole is a technical knot in rock blasting. The solution of this problem may be helpful to obtain masses of minerals by way of boreholes and promote the efficiency of solution mining and in-situ uranium mining, and make it possible to obtain some difficuh-to-mine minerals with significant potential value. A couple of blasting technical issues on rock fragmentation in borehole were discussed and the influencing factors were analyzed in this paper, it was indicated that well fragmentation of rock mass in-situ borehole could be achieved by way of adopting a reasonable loading means with full consideration of deposit conditions of rock.

关 键 词：爆破 岩石破碎 钻孔 

分 类 号：TD235.4[矿业工程—矿井建设]