Method for constructing layer connection roadways by top slicing and cemented filling mining process

Abstract

The invention discloses a method for constructing layer connection roadways by a top slicing and cemented filling mining process. The operations from the step a to the step e are carried out on the layer connection roadway of a previous layer and an ore body of the previous layer, so that the layer connection roadway of the previous layer can be fully utilized by the layer connection roadway of a next layer; new layer connection roadways do not need to be tunneled again, so that the number of the newly tunneled layer connection roadways can be greatly reduced, the tunneling work amount is greatly reduced, and the problems that the layer connection roadways are difficult and complex to arrange and the opening positions of the layer connection roadways are difficult to select are solved; through the operations from the step a to the step e, a roof of the formed layer connection roadway of the next layer is a filling body formed by a reinforcing mesh, filling slurry and hanging reinforcing steel bars, the safety and the stability are good, and supporting is not needed any more; and the layer connection roadway of the previous layer is fully utilized by the layer connection roadway of the next layer, so that the tunneling work amount can be reduced, and the tunneling support cost can be reduced.

Description

technical field [0001] The invention belongs to the construction field of layered connecting roads, and in particular relates to a construction method of layered connecting roads with downward layered cementation and filling mining method. Background technique [0002] The downward layered filling mining method and the downward high-advance cemented filling mining method layer back to the ore body from top to bottom, and the layer height is generally 4m-6m. Each layer enters the ore body through the excavation layer connection road. It is usually necessary to excavate more than 5 layered connecting roads outside the veins of the ore body with a small space to mine the ore body with a height of 20m. costly. [0003] Existing problems and shortcomings: [0004] (1) The arrangement of layered connecting roads is difficult and complicated, and the selection of opening positions is difficult. [0005] (2) The amount of excavation work is large, and the cost of excavation suppo...

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Problems solved by technology

[0006] The purpose of the present invention is to provide a method that can solve the problems of difficult and complex arrangement of layered connecting roads and difficult selection of opening positions, and reuse part of the existing layered connecting roads to reduce the amount of excavation work and reduce the cost of tunneling support. Layered access road construction method

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