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.
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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