摘要
矿井围岩赋存条件是煤矿生产的先决条件,它可以影响到矿井生产的各个阶段.传统的矿井围岩强度测试与分级方法需要进行大量的实验室岩石强度测试测试工作,耗费时间且效率较低,并且在围岩破碎区域常常无法取得合格的强度测试试件.而基于地球物理测井技术的采矿围岩强度预测与分类技术具有快速、经济、高效的特点,近年来已成为美、澳等采矿强国的研究热点之一.当前这一技术的主要研究手段包括声波测井法、地球物理围岩分级方法、自然伽马能谱结合瞬时中子伽马活度方法、钻孔窥视方法等.本文介绍了世界上这一领域的最新研究进展,讨论了它的发展趋势,阐明了我国在这一领域中需要跟进的研究方向.
Characterizing surrounding rock condition in any underground or surface excavation is the prerequisite for assuring the stability in any mining operation. Ground stabilization and support can affect every stage of mining and is the cornerstone of mine safety.Realistic and optimum design of ground support requires ample amount of laboratory work including traditional rock strength testing,mapping of rock structure,and rock mass classification.These steps are timeconsuming and costly.While most of the assessment of rock conditions are done on rock cores,one cannot get sufficient qualified strength test samples in heavily altered,fractured,and crushed areas.A quick,economic,and efficient alternative for rock strength estimation and classification is borehole logging.The most common methods for borehole logging are sonic televiewers, spectrometric natural gamma, prompt gamma neutron activation analysis（PGNAA）,Geophysics Strata Rating（GSR）and borescope.This paper will introduces these technologies and will review the recent advancement in these technologies and will discuss their field applications.It will also discuss the relevant area of application and future development for use in mining industry of China.
出处
《地球物理学进展》
CSCD
北大核心
2014年第3期1452-1457,共6页
Progress in Geophysics
基金
江苏高校优势学科建设工程资助项目
国家自然科学基金青年科学基金资助项目(50904064)
国家重点基础研究发展计划资助(2011CB201200)联合资助
关键词
地球物理测井
围岩强度
围岩分级
采矿工程
borehole logging
rock strength assessment
rock mass classification
mining engineering
