Two-step upward high-layering bagging cut-and-filling stoping method

Abstract

The invention relates to a two-step upward high-layering bagging cut-and-filling stoping method. A fragmented haulage way is constructed from a slope opening; a stope connection way is drilled from the fragmented haulage way to an ore body footwall; an intra-vein haulage way is constructed in a vein of the ore body footwall for communicating ore chambers with jamb stopes; after the stoping of the ore chamber stopes is finished, a bagging tailing stop wall is built in an outlet position for stope filling; when the stop wall is built, the intra-vein haulage way of the footwall is remained as a stoping channel of the jamb stopes; after the stoping of the jamb stopes is finished, multiple jamb stopes are taken as one district; filling stop walls are built at the two ends of the intra-vein haulage way of the footwall and in an outlet of the stope connection way; and the multiple jamb stopes are filled once through the mobility of filling slurry. The method is low in stope preparation work amount, is low in production cost of the filling stop walls, can realize synchronous filling of the multiple two-step stopes, and reduces the complexity of the filling process.

Description

[0001] technical field [0002] The invention belongs to the technical field of underground filling and mining, and in particular relates to a two-step upward layered bag filling mining method. Background technique [0003] The two-step upward layered filling mining method is to divide the ore body into ore houses and ore pillars for two-step mining. In the first step, the mine room is mined first, and then the ore pillar is mined in the second step after cementing and filling. Layer mining is performed in the stope mining , Layered filling, leaving enough working space after filling. Due to the need to operate under the exposed stope roof, this mining method is mainly suitable for mining steeply inclined and inclined ore bodies with stable ore and moderately stable surrounding rocks. High stratification is used when the sex is good. Under normal circumstances, the current two-step high-layer filling mining method, the mining quasi-works mainly include ramps, sub-level tra...

AI Technical Summary

Problems solved by technology

The defect of this mining method one is that each stope all needs a stope contact road as the passageway for pedestrians, ventilation, and out of the mine, resulting in a large amount of mining work and low mining production efficiency; the second is that each stope exit Both need to build a filling retaining wall and fill it separately, which makes the filling process complicated and the cost of filling the retaining wall is high

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