Shaft coal-pillar as well as mine plant coal-pillar is the only mineable resources in later stage of No. 6 coal mine of Changguang mining district.

• 摘要长广矿区六矿井筒与工业广场煤柱是矿井生产后期的惟一可供开采的资源，讨论了该矿复杂地质条件下井筒与工业广场煤柱开采的可行性；