杏花煤矿沿空留巷顶板破碎原因分析及其防治

Cause analysis on roof broken in mine gateway retained for next sublevel in Xinghua Mine as well as prevention and control

在分析杏花煤矿东四采区23号煤层沿空留巷顶板破碎原因的基础上,相应提出了“匹配协调、力求均布、弱化扰动”的防治原则。

Base on the analysis on roof broken cause of the gateway retained for the next sublevel in No. 23 seam of East No. 4 Mining Area, Xinghua Mine, the paper provided a prevention and control principle of match and coordination, searching even layout, and reduction and disturbed.