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本文通过南方小煤矿技术经验指标和巷道支护技术状况的分析,论述了南方小煤矿使用金属支护的必要性和优越性,并分析了刚性和可缩性金属支架的应用范围,及拱形和梯形金属支架的适用性。
Based on the analysis of technical experience indicators and roadway support technology status of small coal mines in southern China, this paper discusses the necessity and superiority of using metal supports in small coal mines in southern China and analyzes the application range of rigid and retractable metal brackets, And trapezoidal metal stent applicability.