Mining method of waste rock filling with artificial concrete retaining wall reconstructed inter-column

Abstract

The invention discloses a manmade concrete retaining wall reconstruction and rib pillar waste rock filling mining method. The manmade concrete retaining wall reconstruction and rib pillar waste rock filling mining method comprises the steps that ore blocks are arranged in the vertical direction, the length of the ore blocks is the horizontal thickness of the ore blocks, the ore blocks are composed of ore rooms and ore pillars, no rib pillar or top pillar is reserved between the ore blocks, and only bottom pillars are reserved between the ore blocks; the ore rooms and the ore pillars are basically the same in stoping technology, stoping is conducted to the tops of ore bodies from bottom to top during stoping, an operation cycle comprises one time of mining and one time of filling, and during filling, firstly, manmade concrete retaining walls are poured along the boundaries on the two sides of the ore rooms, secondly, the space between the two retaining walls is filled with waste rocks, and finally, cement mortar is poured on the upper face of each layer; the topmost layer is subjected to cemented filling through the cement mortar in a roof-contacted mode; and the two lowermost layers are subjected to cemented filling through the cement mortar. The manmade concrete retaining wall reconstruction and rib pillar waste rock filling mining method has the advantages such as simple technology, high production capacity, small mining and cutting engineering quantity, high recovery rate and low dilution loss of an upward horizontal slicing and filling mining method, and by adoption of waste rock filling, the waste rock outward discharging cost is reduced, the tailing sand usage amount is further decreased, and the manmade concrete retaining wall reconstruction and rib pillar waste rock filling mining method is environmentally friendly and efficient.

Description

technical field [0001] The invention relates to a mine mining technology, in particular to a mining method for filling artificial concrete retaining walls with waste rocks in restructured inter-columns. Background technique [0002] The value of some metal ores in my country is relatively high, and the average value of raw ore per ton is as high as several thousand yuan. The main ore body of the mine is a steeply inclined medium-thick to thick ore body, the ore body is stable, and the surrounding rock is biological reef limestone. , with bioclastic structure, massive structure. The rock quality of the reef limestone is medium to good, and the rock mass is medium to relatively complete. Generally, the roadway does not need support. [0003] At present, the mining of this type of ore body mainly adopts the mechanized upward horizontal layered filling method. In this method, mining and filling are carried out from the bottom to the top according to the layering. The filling ado...

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Problems solved by technology

[0003] At present, the mining of this type of ore body mainly adopts the mechanized upward horizontal layered filling method. In this method, mining and filling are carried out from the bottom to the top according to the layering. The filling adopts tailings cemented filling. Due to the high value of the ore in this mine, mining is more difficult. Sufficient, the required filling amount is relatively large, but the tailings rate of this mine is low, and there are still a small amount of useful metals in the tailings that have not been recovered, which will have a great recovery prospect in the future. In order to meet the filling requirements, the mine needs to purchase tailings from other places for Filling, which greatly increases the cost of filling, and the instability of filling material supply affects the normal mining of mines

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