Gentle tilt angle mining structure

Abstract

The invention relates to a gentle tilt angle mining structure. According to the gentle tilt angle mining structure, an air return roadway is formed in the topmost layer in an ore bed to be mined, haulage roadways are formed in the ore bed to be mined at equal intervals from top to bottom and laid along the tilt plane of the ore bed to be mined, and the haulage roadways and the air return roadway are communicated with an external air return well; at least one air inlet roadway is formed in the bottommost layer of the ore bed to be mined along the tilt plane of the bottommost layer and is communicated with an air inlet well, and a mining roadway is formed in the mining face of the ore bed to be mined and communicated with the haulage roadways, the air inlet roadway and the air return roadway. Due to the gentle tilt angle mining structure, the ore bed to be mined can be compact in structure and easy and convenient to mine, the mining cost is indirectly reduced, the ore bed with the thickness of 2.1m-2.8 m can be mined in a one-off mode, the mining rate is large, and the mining efficiency is high. The deep hole fully-mechanized coal mining blasting mining scheme can be achieved, a top plate of a mined ore bed can be observed through the air return roadway of the topmost layer, and the reliable basis is provided for caving in the next step.

Description

technical field [0001] The invention relates to a comprehensive mining structure which integrates the layout of the mining working face of the inclined seam, ventilation, escape, and mining post-mining filling structure. Background technique [0002] It is well known that there is a phenomenon that the roof does not slide ore in the gently inclined seam. In the prior art, the horizontal dense roadway mining method is adopted for the gently inclined seam, and the mining method of single "seeing four retreats and one" working face is used for mining. This method needs to open more tunnels, resulting in less mining, high mining costs, low output, and input-output disproportion, which is a mining problem that has existed for many years in gently inclined mines. [0003] Also there are the following problems in the existing mining technology: 1. There are dead corners left on the bottom of the roadway, and the ore can't be mined. Waste of ore resources; 2. The roadway mining has...

AI Technical Summary

Problems solved by technology

This method needs to open more tunnels, resulting in less mining, high mining costs, low output, and input-output disproportion, which is a mining problem that has existed for many years in gently inclined mines.

[0003] Also there are the following problems in the existing mining technology: 1. There are dead corners left on the bottom of the roadway, and the ore can't be mined. Waste of ore resources; 2. The roadway mining has a large amount of excavation, and the roadway cannot be reused; 3. The use of full-color filling for filling will cause the mining cost to double, which seriously hinders the economic development of mining in gently inclined seams; 4. The floor of the roadway is due to The slope is gentle, the support is extremely difficult, and accidents of the support falling down and hurting people often occur

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