摘要
2001年全国煤炭产量13亿吨,2005年全国煤炭产量增至22.6亿吨,每年以2亿吨的速度递增。我国的煤炭开采业发展十分迅猛,在众多因素之中,煤矿开采机械化情况绝对是煤矿开采中的重中之重。
13 hundred million tons ofeoal were produced in 2001,22.3 hundred million tons in 2005 with a speed inreasing of 2 hundred million tons each year all over the country.Chines coal mining industry is forging rapidly.Among many factors involved,the level ofmeehanization is the most important one in coal mining.
出处
《黑龙江科技信息》
2008年第12期61-61,共1页
Heilongjiang Science and Technology Information
关键词
煤矿开采
煤矿机械化
采煤系统
Coal mining
Mechanizationincoalmine
System of coal mining.
