摘要
多年冻土区蕴藏着丰富的矿产资源,矿业开发已成为多年冻土区经济发展的主要产业之一.但是,在其开采过程将不可避免地受到冻土的影响,也造成多年冻土区生态环境恶化的影响.在西部大开发的进程中,能源需求量逐渐增加,而多年冻土区矿山露天开采量逐渐减少,开展多年冻土区矿山地下开采相关的研究工作显得尤为迫切.在分析和总结前人研究成果的基础上,综述了近年来国内外有关多年冻土区矿山开采问题的研究现状,并详细介绍了多年冻土区矿山开采过程中围岩热力学性质的变化规律及其施工技术以及冻土环境保护的定性定量评价,最后概述了多年冻土区类似工程的研究方法的借鉴性,并在此基础上提出了今后的研究方向.
There are abundant mineral resources in permafrost regions of China and the mining has become one of the main economic sectors.Providing a great deal of energy and raw materials,the mining is promoting the economic growth in the West of China.However,because the ecosystem of the Tibetan Plateau is very vulnerable and sensitive to change in climate and ground surface conditions,a series of environmental geological problems caused by mining take place,such as degradation of the ecosystem environment,destroying resources and geological hazard outbreak.With a large of demand of energy and gradual decrease in yield of open-pit mining,it is urgent to research the underground mining in permafrost regions.Furthermore,because of the characteristics of permafrost in the plateau,the research work on mining in permafrost regions is not met the need at present.In order to improve the mining situation in permafrost regions,in this paper,the progress of previous researches on mining in permafrost regions is analyzed and discussed,such as the mechanics and thermodynamics behaviors of surrounding rock under low temperature and freezing-thawing.Many treatments for improving the stability of surrounding rock are summarized,especially those treatments applicable to mining in permafrost regions.Meanwhile,the methods of engineering geological evaluation of mining in permafrost environment are also summarized.Analyzing some cases of mining in permafrost regions,the direction of future research is put forward.
出处
《冰川冻土》
CSCD
北大核心
2011年第2期388-396,共9页
Journal of Glaciology and Geocryology
基金
国家自然科学基金创新群体项目(40821001)资助
关键词
多年冻土
矿山开采
冻土环境
围岩
研究现状及展望
permafrost
mining
permafrost environment
surrounding rock
current state and prospect
