The dynamics principle of the sublevel mining method was investigated.
研究了分段充填采矿法的动力学原理。
Recovering coal by sublevel mining pillar and not damaging the houses on ground is introduced.
用条带开采煤柱回收煤炭资源，而不破坏地面房屋、住宅。
Take an underground copper mine as studying object, on which the surface has to be protected, the mining method of sublevel filling method with roof reconstructing is studied.
以某地下铜矿为研究对象，研究了地表要求保护的前提下极破碎矿体的顶板再造上向分段充填采矿法。
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