联邦德国煤矿井下每年掘进大约500公里巷道,其中机械化掘进工作面所占比例还比较小。特别在岩巷掘进中,使用全断面岩巷掘进机掘进的巷道长度仅占全部掘进巷道的1～2％。此类掘进机长达150米,重达300吨,由于搬运、安装掘进机的费用大,仅在长巷掘进中使用此类掘进机才经济。为了在煤矿掘 About 500 kilometers of tunnels are dug every year in the federal German coal mines, of which the mechanized heading is still relatively small. Especially in rock tunneling, the length of the tunnel boring using the full face rock tunnel boring machine only accounts for 1 to 2% of the total roadway. This type of roadheader is 150 meters long and weighs 300 tons. Due to the high cost of handling and installing roadheaders, it is only economical to use such roadheaders in long tunneling. In order to dig in the coal mine