Unlock instant, AI-driven research and patent intelligence for your innovation.

down-and-fill mining method

A mining method and access filling technology, applied in underground mining, filling, surface mining, etc., can solve the problems of difficult production safety, high loss dilution rate, low mining efficiency, etc., to increase sales revenue, improve total the effect of improving resource utilization

Active Publication Date: 2016-08-17
SHANDONG ZIBO FUSHAN ENTERPRISE GRP
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies of the prior art, the object of the present invention is to provide a downward approach filling mining method, which effectively solves the problems of low mining efficiency and high loss and dilution rate due to the difficulty of safe production in the mining of broken ore bodies. A series of problems such as high production costs

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Include the following steps:

[0026] (1) Divide the approach into several approaches in the layered entry. First, the first approach is mined. After the first approach is mined and filled firmly, the rest of the approaches are mined and filled in sequence; the height of each approach is 2.5 m, the width of the approach is 2.5m, that is, the section of the slitting approach is 2.5m×2.5m;

[0027] (2) The layered approach adopts pneumatic picks to vibrate ore, and manually loads and pushes for transportation;

[0028] (3) After each access road is mined, steel bars are laid on the access floor. The main reinforcement with a diameter of 14mm is arranged vertically. The mesh of the main reinforcement and auxiliary reinforcement is 200×200mm, and then pouring mortar, the thickness of the mortar is 0.5m, to form the access mortar backing plate; As an artificial false roof for the next level.

[0029] (4) Tailings, fly ash or excavation rock filling shall be carried out 24...

Embodiment 2

[0033] Include the following steps:

[0034] (1) Divide the approach into several approaches in the layered entry. First, the first approach is mined. After the first approach is mined and filled firmly, the rest of the approaches are mined and filled in sequence; the height of each approach is 3m , the width of the route is 2.5m, that is, the section of the slitting route is 3m×2.5m;

[0035] (2) The layered approach adopts shallow hole loosening blasting, manual loading, pushing and transportation;

[0036] (3) After each access road is mined, steel bars are laid on the access floor. The main reinforcement with a diameter of 12mm is arranged vertically. The mesh of the main reinforcement and auxiliary reinforcement is 200×200mm, and then pouring mortar, the thickness of the mortar is 0.5m, to form the access mortar backing plate; As an artificial false roof for the next level.

[0037] (4) Tailings, fly ash or excavation rock filling shall be carried out 24 hours after th...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to the field of underground mining, in particular to a downward drift filling mining method. In a layered driftway, a drift is divided into a plurality of drifts; the first drift is firstly extracted; after the first drift is extracted and is compactly filled, the rest drifts are sequentially extracted and filled; the layered drifts adopt shallow hole rock drilling, shallow hole loosening blasting or air pick vibration ore breaking, and manual loading and pushing transportation; after each drift is extracted, steel bars are laid on a drift bottom plate; main bars are arranged in a vertical direction; sub bars with the diameter of 8mm are arranged in a direction parallel to the drift direction; then, mortar is poured and irrigated, and drift mortar pad plates are formed; next, tailings, fly ash or tunnel rock filling are carried out; filling bodies are used as support roof plates of the layer; and next, the other drifts are extracted, and the mining mode adopts an one-separated alternate extracting mode. The downward drift filling mining method effectively solves a series of problems of low mining efficiency, high loss and dilution rate, high production cost and the like due to high safety protection difficulty of ore body breaking extraction, and the mining efficiency can reach higher than 91 percent.

Description

technical field [0001] The invention relates to the field of underground mining, in particular to a mining method for filling a downward approach. Background technique [0002] The existing mining method generally adopts the open-field mining method. Since the roof of the shallow ore body is mostly soft Quaternary loam, pebble silt and red clay rock, there is no rock roof in the upper part of the ore body, and the ore body is mined The rear empty roof is very easy to collapse and involves ground subsidence, which cannot guarantee safe production. Contents of the invention [0003] Aiming at the deficiencies of the prior art, the object of the present invention is to provide a downward approach filling mining method, which effectively solves the problems of low mining efficiency and high loss and dilution rate due to the difficulty of safe production in the mining of broken ore bodies. A series of problems such as high production costs. [0004] The downward approach fill...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): E21C41/22E21F15/00
CPCE21C41/22E21F15/00E21F15/02
Inventor 彭希辉彭平均彭卫杰傅海燕
Owner SHANDONG ZIBO FUSHAN ENTERPRISE GRP