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

Method for caving large goaf of underground mine and eliminating goaf

A goaf and underground mining technology, applied in mining equipment, earth-moving drilling, mining equipment, etc., can solve the problems of poor safety conditions, high cost of gob treatment projects, complicated gob treatment procedures, etc., to eliminate safety hidden dangers, reducing the amount of explosives, and avoiding the effect of construction pressure relief skylights

Pending Publication Date: 2022-07-29
SINOSTEEL MAANSHAN INST OF MINING RES +2
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a large-scale underground mine for the problems of poor safety conditions for underground operations in large-scale goafs in existing underground mines, major safety hazards, complicated goaf treatment procedures, and high engineering costs for goaf treatment. The method of caving the goaf to deal with and eliminate the goaf

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
  • Method for caving large goaf of underground mine and eliminating goaf
  • Method for caving large goaf of underground mine and eliminating goaf
  • Method for caving large goaf of underground mine and eliminating goaf

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0027] In order to better describe the present invention, a method of the present invention for caving a large goaf in an underground mine and eliminating a goaf will be further described in detail below with reference to the accompanying drawings.

[0028] Depend on image 3 The construction process flow chart of a method of the present invention for caving a large goaf in an underground mine to treat and eliminate the goaf is combined with figure 1 , figure 2 It can be seen that the present invention divides the underground mining project into four parts: gob 1, gob roof 2, gob surrounding rock 3, and irregular point columns 4. Gob 1, gob roof 2, mining Between the surrounding rocks 3 of the gob is the gob boundary 5; and the following steps are used to implement:

[0029] 1) According to the calculation and analysis results of rock mechanics, choose to divide the surrounding rock 3 of the gob with solid, stable and good integrity around the underground goaf 1 to divide t...

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

PropertyMeasurementUnit
Compressive strengthaaaaaaaaaa
Widthaaaaaaaaaa
Lengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for caving a large goaf of an underground mine and eliminating the goaf. The method comprises the following steps: dividing 2-6 operation areas or explosion areas in a goaf surrounding rock (3) on the periphery of the goaf (1); 3-6 deep hole drilling chambers (9) are arranged in the goaf surrounding rock (3) in each operation area or explosion area, and the deep hole drilling chambers (9) of all layers are communicated through chamber connection wells (10); the method comprises the following steps: arranging a roadway project, namely a connection gate way (6), a connection inclined shaft (7) or a connection raise, between an existing project and a deep hole drilling chamber (9); a caving horizontal deep hole (12) is formed in the deep hole drilling chamber (9) on the middle-lower layer, and a horizontal and upward fan-shaped cutting weakening deep hole (13) is formed in the deep hole drilling chamber (9) on the upper layer. According to the method, the underground engineering amount, the explosive amount of deep hole blasting and the harm caused by air shock waves brought by large-area caving of the goaf are reduced, the construction cost is reduced, and potential safety hazards existing in the large goaf are eliminated.

Description

technical field [0001] The invention belongs to the technical field of goaf treatment in underground mines, and in particular relates to a method for caving treatment of large goafs in underground mines, which is suitable for caving treatment of large goafs in non-coal underground mines by deep hole blasting. Background technique [0002] Goaf governance in underground mining usually adopts four schemes: closed goaf, caving goaf, filling goaf, and support goaf. Among them, the essence of caving surrounding rock to treat the goaf is to fill the goaf with caving surrounding rock, change the stress distribution state of the surrounding rock, and reduce the supporting pressure of the rock. Filling the goaf is a gob treatment method encouraged by the state. It mainly fills the goaf with backfill (tailings, waste rock), and supports the surrounding rock with the backfill, which can slow down or prevent the deformation of the surrounding rock, so as to maintain the its relatively ...

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
IPC IPC(8): E21F17/00F42D1/00F42D3/04
CPCE21F17/00F42D1/00F42D3/04
Inventor 胡永泉刘培正张显郭伟王靖洪敦敏邵淑成王星
Owner SINOSTEEL MAANSHAN INST OF MINING RES
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