Using individual hydraulic prop in thin coal seam face is better than the others in the aspect of support strength, premary supporting force, shrink amount and safety.
在薄煤层工作面中使用单体液压支柱,在支护强度、初撑力、可缩量、安全保障及操作人员安全上,都优于其它单体支护材料。
Soft roof and floor of coal seam could be easily damaged while support was not timely and strength was not enough, so overall support was needed for laneway with strong support strength.
煤层顶底板极松软,若支护不及时、强度不够时极易破坏,需对巷道进行整体支护并具有较大的支护强度。
Soft roof and floor of coal seam could be easily damaged while support was not timely and strength was not enough, so overall support was needed for laneway with strong support strength.
煤层顶底板极松软,若支护不及时、强度不够时极易破坏,需对巷道进行整体支护并具有较大的支护强度。
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