Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Stoping technical method for controlling hanging wall surrounding rock ground pressure by adopting stope room retention blasted pile

A technology of surrounding rock and mine house, which is applied in the field of back mining where the mining house is used to control the surrounding rock pressure of the upper wall, and it can solve the problems of failure to improve the ground pressure of the stope, low ore collapse efficiency and mining intensity, and easy poverty in the ore production process. to improve the efficiency of ore collapse and mining intensity, ensure the stability of the mine room, and avoid damage caused by stress concentration

Pending Publication Date: 2021-10-22
NORTHWEST RES INST OF MINING & METALLURGY INST
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a method of mining technology that adopts the stagnant explosive pile in the mine to control the ground pressure of the surrounding rock on the upper wall. The problem of low mining efficiency and mining intensity

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Stoping technical method for controlling hanging wall surrounding rock ground pressure by adopting stope room retention blasted pile
  • Stoping technical method for controlling hanging wall surrounding rock ground pressure by adopting stope room retention blasted pile
  • Stoping technical method for controlling hanging wall surrounding rock ground pressure by adopting stope room retention blasted pile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] refer to Figure 1-3 , a method of recovery technology using detent blasting piles in mine houses to control the ground pressure of hanging wall rocks, including a stress-increasing area 1, a stress tending to normal area 2, a stress normal area 3, and stranded blasting piles supporting the hanging wall surrounding rocks 4 , empty space interval 5, according to ore body inclination angle and surrounding rock characteristics, adopt mine house detaining explosive pile 4 to control the surrounding rock ground pressure of the upper wall, to improve the stope ground pressure, reduce the dilution in the process of mining, and also include the following steps:

[0027] S1: Combined blasting, four times of blasting in the back mining of the mine house, and four times of blasting in the middle section of 0m and the subsection of 12m, and the footwall of the 26m subsection in four sections of I, II, III, and IV to control the ore from the hanging wall to be out of the mine lagging...

Embodiment 2

[0032] refer to Figure 1-3 , a method of recovery technology using detent blasting piles in mine houses to control the ground pressure of hanging wall rocks, including a stress-increasing area 1, a stress tending to normal area 2, a stress normal area 3, and stranded blasting piles supporting the hanging wall surrounding rocks 4 , empty space interval 5, according to ore body inclination angle and surrounding rock characteristics, adopt mine house detaining explosive pile 4 to control the surrounding rock ground pressure of the upper wall, to improve the stope ground pressure, reduce the dilution in the process of mining, and also include the following steps:

[0033] S1: Combined blasting, four times of blasting in the back mining of the mine house, and four times of blasting in the middle section of 0m and the subsection of 12m, and the footwall of the 26m subsection in four sections of I, II, III, and IV to control the ore from the hanging wall to be out of the mine lagging...

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 technical field of stoping, and discloses a stoping technical method for controlling hanging wall surrounding rock ground pressure by adopting a stope room retention blasted pile. The stoping technical method comprises a stress rising area, a stress tending-to-be-normal area, a stress normal area, a retention blasted pile and a goaf interval, and further comprises the following steps of: S1, combined blasting: performing blasting for stope room stoping in four times, carrying out four-time blasting on a 0m middle section, a 12m subsection and a 26m subsection according to the areas I, II, III and IV, and controlling hanging wall ore to be discharged in a lagging manner; and S2, ore removal: conducting ore removal from the footwall after each time of blasting, and keeping the ore within a certain range below the hanging wall surrounding rock. The stope room retention blasted pile can be adopted to control the hanging wall surrounding rock ground pressure according to an ore body dip angle and surrounding rock characteristics, so that the ground pressure of a stope is improved, dilution in an ore removal process is reduced, advanced damage to a sublevel roadway is avoided, combined blasting is adopted for the stope, ore caving efficiency and stoping strength are improved, stope room stoping time is prolonged, and the stability of the stope room in a stoping period is ensured.

Description

technical field [0001] The invention relates to the technical field of mining, in particular to a mining technical method for controlling the ground pressure of the surrounding rock of the hanging wall by adopting the stagnant explosive stack of a mine house. Background technique [0002] The mine room is the ore body or the mined out part that should be mined except the ore pillar that must be preserved in the stope or ore block mined underground. The empty mine room is called the coal room in the coal mine, and the part of the ore pillar left in the stope is removed, which is the mine room. [0003] When the ore value is low or the mined-out area is used for underground buildings after mining, strip-shaped continuous ore pillars are used. The ore pillars are generally no longer mined, and often account for 15-40% of the ore volume. In recent years, anchor shotcrete support and various This type of high-efficiency self-mining equipment improves the mining intensity, improv...

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 Applications(China)
IPC IPC(8): E21C41/22
CPCE21C41/22
Inventor 张睿柴衡山金明祯郝显福王忠泉刘财林王永智焦满岱孟慧媚
Owner NORTHWEST RES INST OF MINING & METALLURGY INST
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com