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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Describes the methods of reinforcing roof of the plank and surrounding rock by using pipe-burying filling, to mak them as a whole, so as to go-through the caving zone safely and smoothly.

详细介绍了采用埋管注浆方法充填加固冒落段巷道顶板及围岩，使之胶结成为整体，从而安全顺利地通过该冒落带的施工技术。

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The production blasts at filling mining condition should produce adverse effects as blasting vibration to the filling body, tunnel and roof.

建议在回采矿柱时，在临近充填体边上采用预裂缝降振技术，以及加强爆破管理，可以实现矿山的安全生产。

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