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

Surface subsidence budget method based on FLAC3D numerical simulation mineral exploitation

A numerical simulation and mining technology, applied in electrical digital data processing, instruments, design optimization/simulation, etc., can solve the problems of time-consuming, labor-intensive, high-cost, etc., and achieve the effect of economical rationality, simple simulation operation, and easy practical application.

Pending Publication Date: 2020-06-23
江西省煤田地质局二二四地质队
View PDF4 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The surface subsidence caused by mining of mine seams is generally monitored in real time during the actual mining process, and it is difficult to predict it in advance, and the indoor similar test simulation is not only expensive, but also time-consuming and labor-intensive

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
  • Surface subsidence budget method based on FLAC3D numerical simulation mineral exploitation
  • Surface subsidence budget method based on FLAC3D numerical simulation mineral exploitation
  • Surface subsidence budget method based on FLAC3D numerical simulation mineral exploitation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0029] A budget method for surface subsidence based on FLAC3D numerical simulation of mineral mining, the specific steps are:

[0030] 1. According to the actual geological conditions, comprehensively analyze the drill holes for exposing mineral deposits, establish a suitable model, analyze the drill holes for exposing ore layers based on the collection of previous data, select the appropriate depth below the surface, and establish a suitable geological model; the example is ZK1002 hole The actual exposed lithology is the simulation object, the design simulation size is 100m*100m*220m, and the simulated coal seam is 5-3 # 、7 # , 15-1 # , 15-2 # , the thickness of the coal seam is 1.5m, 2.5m, 3.0m and 2.0m respectively, and the geological model is as follows figure 2 shown.

[0031] 2. Obtain relevant parameters according to the mechanical test of the mineral and its roof and floor lithology, sample and test the lithology of the roof and floor of the mine layer exposed by ...

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 discloses a surface subsidence meter budget method based on FLAC3D numerical simulation. The drill hole of the actually exposed mineral product is analyzed; geological conditions of mineral products during actual mining are combined; the strike and the inclination length of the mining face and the thickness of roof and floor strata of a selected drilling ore bed are used as X, Y andZ lengths of the model; establishing numerical model, a Moore-Coulomb physical model criterion is selected, a model obtained after mineral exploitation is defined as an empty model, the bottom of themodel is defined as a full-constraint boundary, left and right boundaries and front and rear boundaries as constraint boundary conditions, downward stress is applied to the top of the model accordingto the gravity of an overlying rock stratum in the simulation exploitation process, and a ground surface subsidence numerical value is output through node numbers. According to the method, physical and mechanical testing is combined, FLAC3D numerical simulation software is utilized, an analysis and debugging model is established, mineral exploitation simulation solving is executed, a model response result is obtained, the influence of mineral exploitation on surface subsidence is quantified, operation is easy, and practical application is easy.

Description

technical field [0001] The invention relates to a method for estimating surface subsidence in the mining process of coal seams, metal minerals and other fields, in particular to a method for estimating surface subsidence based on FLAC3D numerical simulation of mineral mining. Background technique [0002] After the ore is mined, the original stress balance of the surrounding rock in the mining area is destroyed, causing the rock to move and deform. When the mining area reaches a certain range, the movement of the rock will expand to the surface, causing the surface to sink. The surface subsidence caused by mining of mineral seams is generally monitored in real time during the actual mining process, and it is difficult to predict it in advance, and the indoor similar test simulation is not only expensive, but also time-consuming and labor-intensive. Contents of the invention [0003] The object of the present invention is to provide a kind of time-saving, labor-saving, low-...

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): G06F30/20G06F119/14
Inventor 张缓缓叶永芳吴晓辉刘少华詹华平陈四宝
Owner 江西省煤田地质局二二四地质队
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