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给出了俄罗斯、英国、奥地利、德国等国煤巷掘进机在俄罗斯库兹巴斯矿区使用状况,分析了各国掘进机故障分布和经济效果,提出了开发和引进掘进机的建议。
The usage status of coal tunneling machines in Russia, Britain, Austria, Germany and other countries is given. The fault distribution and economic effects of roadheaders in different countries are analyzed. Suggestions for developing and introducing roadheaders are put forward.