A multi-index comprehensive evaluation method for surface mining fractures in shallow coal seams
A comprehensive evaluation, surface technology, applied in data processing applications, instruments, calculations, etc., can solve the problems of not being able to characterize the degree of connection between surface mining fractures and underground coal seam gobs, and unable to reflect the dynamic characteristics of surface mining fractures, etc. To achieve the effect of wide applicability and practicability, strong accuracy, and simple operation steps
Active Publication Date: 2022-05-13
INNER MONGOLIA UNIV OF SCI & TECH
View PDF10 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The basic parameters such as the horizontal opening amount of the surface mining fracture and the vertical dislocation amount can delineate the influence range of the surface mining and preliminarily determine the degree of damage to the surface in the area, but they cannot reflect the dynamic change characteristics of the surface mining fractures with the instability of the overlying rock. And it cannot represent the degree of connectivity between surface mining fractures and underground coal seam gobs
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0105] In order to illustrate the present invention better, the coal mining face of a certain mine is taken as an example to describe in detail below. The specific implementation steps are as follows:
[0106] (1) Acquisition of the relative spatial relationship between underground coal mining face and surface mining fractures.
[0107] ① Obtain parameters such as buried depth, face length, and advancing length of the coal mining face. The length of the working face is 148m, the average mining thickness of the working face is 12.8m, the average buried depth is 117.4m, and the advancing length of the working face is 200m.
[0108] ② Preliminary investigation of the distribution of mining fractures on the surface, at least three observation points should be determined for each fracture (if the fracture is long or there is a turning point, the observation points should be increased appropriately), and the geographical coordinate data of the observation points should be located b...
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
Login to View More Abstract
The invention relates to a multi-index comprehensive evaluation method for surface mining cracks in shallow coal seams, including the acquisition of the relative spatial relationship between underground coal mining face and surface mining cracks; Observation and data processing of goaf penetration degree; statistical arrangement of various evaluation index values of surface mining fractures; division of surface mining fracture types; determination of multi-index comprehensive evaluation values of surface mining fractures; Comprehensive evaluation of mining fracture classification and classification. In the evaluation of surface mining fractures in shallow coal seams, the above method comprehensively considers the basic parameters of surface mining fractures, dynamic change characteristics, and the degree of penetration with underground gobs, selects multiple quantitative indicators, and classifies shallow coal seam surface mining fractures Grading evaluation. The method has simple operation steps, stronger accuracy, wide applicability and practicability.
Description
technical field [0001] The invention belongs to the field of coal mining subsidence damage evaluation, and relates to a multi-index comprehensive evaluation method for surface mining cracks in shallow coal seams, in particular to a comprehensive consideration of the basic parameters and dynamic change characteristics of surface mining cracks and their relationship with underground goafs The degree of penetration, based on the improved relative gap sum method, is a comprehensive evaluation method for surface mining fractures in shallow buried coal seams. Background technique [0002] As the development focus of China's coal resources shifts to the west, more and more attention has been paid to the safe mining of coal resources in the west. Mining areas in western China generally have the characteristics of shallow coal seam burial, large reserves, and fragile surface ecology. The main characteristics of overlying rock movement in shallow coal seam mining are that the roof st...
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
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): G06Q10/06G06Q50/02
CPCG06Q10/06393G06Q50/02
Inventor 李建伟吴祥业吕鹏飞张健李学富闫志磊
Owner INNER MONGOLIA UNIV OF SCI & TECH