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

Repeatedly mined surface deformation predicting method

A technology of surface deformation and prediction method, which is applied in surface mining, earth square drilling, underground mining, etc., and can solve problems such as inability to predict surface deformation

Inactive Publication Date: 2015-06-17
LIAONING TECHNICAL UNIVERSITY
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the increasingly scarce coal resources, the problem of "three undercuts" coal pressure is becoming more and more prominent. The mining of coal resources will inevitably have an impact on the surface. Accurately grasping the degree of impact after mining is an important basis for surface protection and program design in advance. Among the existing surface mining deformation prediction algorithms, the only algorithm that has been verified and generally recognized by the field is the surface deformation prediction algorithm after single-face mining, which cannot predict the surface deformation after multi-face mining

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
  • Repeatedly mined surface deformation predicting method
  • Repeatedly mined surface deformation predicting method
  • Repeatedly mined surface deformation predicting method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0113] An embodiment of the present invention will be further described below with reference to the accompanying drawings.

[0114] The surface movement and deformation process of multi-face mining is different from that of single-face mining:

[0115] (1) Surface movement and deformation process of single working face mining

[0116] Surface mobile basins are formed gradually during the advancement of the working face. When the mining face begins to advance from the opening of the incision, with the increase of the advancing scale and time of the working face, the overlying rock layer gradually sinks, and the mining impact gradually spreads to the surface, causing the surface to sink, and then forming a tilt Deformation, Curvature Deformation, Horizontal Movement and Horizontal Deformation, etc. With the continuous advancement of the working face and the passage of time, the area of ​​the goaf continues to increase, the influence scope of the surface is also gradually expan...

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 repeatedly mined surface deformation predicting method and belongs to the technical fields of mining under 'three bodies' and digital mining. According to the method, by means of superposition of surface inclining values, superposition of curvature values, superposition of horizontal moving values and superposition of horizontal deformation values, multi-working-surface mined surface deformation prediction is effectively achieved; furthermore, the method can also be used for conducting prediction on strip mined surface deformation, one-position multi-working-surface mined surface deformation and different-position mined overlapping region deformation.

Description

technical field [0001] The invention belongs to the technical field of "three-down" mining and digital mining, and particularly relates to a method for predicting surface deformation of repeated mining. Background technique [0002] With the increasingly scarce coal resources, the problem of "three downs" coal pressing is becoming more and more prominent. The mining of coal resources will inevitably have an impact on the surface. Accurately grasping the degree of impact after mining is an important basis for surface protection and program design in advance. Among the existing surface mining deformation prediction, the only algorithm that has been verified and generally recognized in the field is the surface deformation prediction algorithm after single-face mining, and cannot predict the surface deformation after multi-face mining. [0003] The surface movement and deformation process of single-working face mining is much simpler than the surface deformation process of repea...

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): G06F19/00E21C41/16E02D1/00
Inventor 题正义秦洪岩王猛杨艳国李洋姜璐董强强曹艺钟
Owner LIAONING TECHNICAL UNIVERSITY