采煤工作面顶板状况直接关系煤矿的安全生产和经济效益。
The roof of the coal mining works face is connected with safety production and economic benefits directly.
主要阐述了在极破碎顶板条件下，应用锚网锚索联合支护的巷道围岩地质状况、支护方案、施工组织、安全措施及经济效果。
The technology of combination of bolting wire mesh and cable anchor has been proved to be workable in permanent roadways, based on analysis of date collected from observations of roadway.
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