Packed cofferdam filling mining method

Abstract

The invention relates to a bagged cofferdam filling mining method. Aiming at the mining area, a bagged filling body cofferdam connected with the mining column is constructed, and then the empty area in the mining area's cofferdam is filled, including: (1) in the mining area Set up a three-dimensional net-shaped filling body fixing frame at the boundary of the partition; (2) Place the filling bag with a feed inlet in the filling body fixing frame, and fix the filling bag on the fixing frame; (3) Fill the filling bag Put in the mortar filling material to form the cofferdam of the bagged filling body. The invention creates safe operating conditions for the recovery of ore pillars, realizes safe and efficient recovery of point columns and bar columns under the condition of penetrating the goaf, and effectively improves the recovery rate and mining efficiency of ore pillars.

Description

technical field [0001] The invention belongs to the technical field of filling and mining, and in particular relates to a filling and mining method of bagged cofferdams. Background technique [0002] In my country's underground metal mines, the ore reserves of ore pillars or residual ore bodies are very considerable. Many ore pillars have high-grade ore, complex occurrence conditions, unclear shapes and conditions, and many faces are empty. Traditional mining methods are generally difficult to mine. Big question. In the past, only 10% to 20% of these high-grade ore pillars can be recovered by using the open field method and caving method. However, when the filling method is used for mining, under the condition that the goafs are tall and the goafs are connected with each other, the existing filling technology is difficult to realize the partitioned and isolated filling of the goafs, so the recovery of the ore pillars needs to be carried out in the filling body or the The su...

AI Technical Summary

Problems solved by technology

[0002] In my country's underground metal mines, the ore reserves of ore pillars or residual ore bodies are very considerable. Many ore pillars have high-grade ore, complex occurrence conditions, unclear shapes and conditions, and many faces are empty. Traditional mining methods are generally difficult to mine. big problem

In the past, only 10% to 20% of these high-grade ore pillars could be recovered by using the open field method and the caving method.

However, when the filling method is used for mining, under the condition that the goafs are tall and the goafs are connected with each other, the existing filling technology is difficult to realize the partitioned and isolated filling of the goafs, so the recovery of the ore pillars needs to be carried out in the filling body or the The surrounding construction projects have high requirements on the quality of the filling body, and it is difficult to ensure the smooth progress of mining and ventilation in the stope, which eventually leads to the failure of recovery of most of the ore pillars

Therefore, for this type of ore body, the mining process is complicated, the safety is poor, the mining efficiency is low, the loss is large, and the mining cost is high. At present, there is a lack of safe, efficient and reliable filling mining technology

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