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.基于前人在非冻土区的相关研究成果,结合位于多年冻土区的江仓矿区气象资料,利用MATLAB软件编写入风井筒风温计算程序,并引入临界温度的概念研究入风井筒风温的变化规律,确定了影响因素,获得了矿井通风与多年冻土井筒围岩的对流换热边界条件中风流温度的拟合函数,其计算方法和结果为下一步采用数值模拟的方法研究矿井通风对多年冻土井筒围岩的热影响提供了参考依据.
There are abundant mineral resources in permafrost region of China and the mineral resources exploitation has become one of mainly economic developmental types.As a main resource of energy and raw materials,the mineral resources exploitation promotes economic growth of the western China.However,since the ecosystem of the Qinghai-Tibetan Plateau are very fragile and sensitive to changes in climate and ground surface conditions,a series of environmental geological problems caused by mining resources exploitation,such as the destruction of the ecosystem environment,the destroy of resources and geological hazard.With a large of energy quantity demanded and gradually decreasing of yield of open-pit mining,researches on underground mining are even more badly needed in permafrost region.Based on the relevant research achievements in unfrozen earth area and the meteorological data of Jiangcang coalfield in permafrost area,using calculation program of airflow temperature in an intake shaft,varying law of airflow temperature in an intake shaft was studied by the use of critical temperature.The factors of influencing the airflow temperature were determined and the fitted equation of convection heat transfer boundary conditions between mining ventilation and the surrounding rock of the shaft in permafrost regions was found.The calculation methods and results are given as references for the next study on thermal influence of the surrounding rock of shaft in permafrost regions under the action of mining ventilation.
出处
《冰川冻土》
CSCD
北大核心
2013年第1期177-185,共9页
Journal of Glaciology and Geocryology
基金
国家自然科学基金创新群体(40821001)资助
关键词
多年冻土
矿井通风
临界温度
对流换热
江仓矿区
permafrost
mining ventilation
critical temperature
convection heat transfer
Jiangcang coalfield
作者简介
何维维（1984-），男，湖北随州人，助理工程师，2011年在中国科学院寒区旱区环境与工程研究所获硕士学位，现主要从事岩土工程数值模拟研究．E—mail：heweiwei08@lzb．ac．cn
