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Method for presetting roadways by section moulds

A technology of roadway and excavation method, which is applied to mining equipment, earthwork drilling, filling materials, etc., and can solve problems such as increasing the cost of excavation, reducing the stability of filling bodies, and the safety of the mining roadway

Active Publication Date: 2017-08-04
CHANGCHUN GOLD RES INST
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  • Summary
  • Abstract
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  • Claims
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Problems solved by technology

For mines using the two-step backfilling method, when the adjacent second-step stope is backed, it is usually necessary to re-drill rock blasting and excavate the mine exit roadway in the filling body of the first-step stope, which not only reduces the stability of the filling body and the exit The safety of the mine roadway, but also increased the cost of excavation

Method used

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  • Method for presetting roadways by section moulds
  • Method for presetting roadways by section moulds

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specific Embodiment approach

[0018] In order to further illustrate the technical solution of the present invention, in conjunction with the accompanying drawings, the specific implementation of the present invention is as follows:

[0019] A method for presetting tunnels by molds. In one step, pre-lay an occupying mold at the bottom of the empty area of ​​the stope, and then fill the occupying mold with non-cementitious slurry, and then start the one-step stope filling work after dehydration. After the filling of the one-step stope is completed, ordinary excavation methods can be used to form the exiting roadway of the two-step stope, which realizes the preset exiting roadway of the model.

[0020] In this embodiment, it is necessary to preset an arched mining tunnel with a cross-sectional specification of 2.8m×2.8m and a total length of 25m. The specific steps of the method for presetting the tunnel in the mold are as follows:

[0021] Step 1. Lay the space-occupying mold 3 at the preset position of the mine ro...

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Abstract

The invention belongs to the technical field of underground mining for mines, in particular to a method for presetting roadways by section moulds. The method comprises the following steps: laying the placeholder section moulds in advance at the mined area bottom of a one-step stope, then filling the placeholder section moulds with non-cemented slurry, starting filling operation of the one-step stope after performing dewatering, after the filling of the one-step stope is completed, using the common digging mode to form ore drawing roadways of a two-step stope, and presetting the ore drawing roadways by the section moulds. The method for presetting the roadways by the section moulds avoids drilling, blasting and tunneling of the ore drawing roadways again in a filling body, so that the tunneling efficiency and operation safety of stope preparation roadways are greatly enhanced, and then the tunneling cost is lowered.

Description

Technical field [0001] The invention belongs to the technical field of underground mining in mines, and specifically relates to a method for presetting a tunnel with a mold. Background technique [0002] At present, the mining of hard rock mines usually uses rock drilling and blasting to excavate roadways. The cost and efficiency of roadway excavation have a huge impact on mine production. For mines that adopt the two-step stoping and filling method, when the adjacent two-step stope is stopped, it is usually necessary to re-drill the blasting in the filling body of the one-step stope to drive in and out of the mine roadway, which not only reduces the stability and output of the filling body. The safety of the mine roadway, and increase the cost of excavation. Summary of the invention [0003] The purpose of the present invention is to provide a method for presetting the roadway with a model, which avoids re-drilling and blasting in the filling body to drive in and out of the mine...

Claims

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Application Information

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IPC IPC(8): E21C41/16E21F15/00
CPCE21C41/16E21F15/00
Inventor 韦华南严鹏侯俊郭树林
Owner CHANGCHUN GOLD RES INST
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