With the object of wall rock in mining roadway, its stability classification and support technology are studied in detail.
本文以回采巷道围岩为研究对象，对其稳定性分类及其支护对策进行了深入细致的研究。
With the object of wall rock in mining roadway, its stability classification and support technology are studied in detail.
本文以回采巷道围岩为研究对象，对其稳定性分类及其支护对策进行了深入细致的研究。
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