A method for comprehensively predicting roof fall height and hidden danger classification of coal seam roadway

A technology for roadway roof fall and comprehensive prediction, which is applied in instruments, geometric CAD, calculation, etc., can solve problems such as difficulty in comprehensively determining roof fall height and hidden danger classification, and achieve the effect of ensuring theoretical significance and practical value and reducing the probability of accidents.

Active Publication Date: 2019-03-08
NORTH CHINA INST OF SCI & TECH +1
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Problems solved by technology

[0006] The purpose of the present invention is to provide a method for comprehensively predicting the roof fall height and hidden danger classification of coal seam roadway, so as to sol

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  • A method for comprehensively predicting roof fall height and hidden danger classification of coal seam roadway
  • A method for comprehensively predicting roof fall height and hidden danger classification of coal seam roadway
  • A method for comprehensively predicting roof fall height and hidden danger classification of coal seam roadway

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Embodiment Construction

[0050] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0051] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" etc. The orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orient...

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Abstract

The invention provides a method for comprehensively predicting roof fall height and hidden danger classification of coal seam roadway, characterized by comprising the following steps of (1) dividing the roadway roof fall type i into four types of partial block roof fall of fissure surrounding rock mass roadway, roof fall of cataclastic surrounding rock mass roadway in butterfly-shaped plastic zone, composite roof fall of weakly cohesive layered surrounding rock mass roadway and roof fall of loose surrounding rock mass roadway; 2 establishing a mathematical model for each roof fall type, respectively calculating that hidden trouble value Hi of the roof fall height of the four roof fall types at the kth coordinate point on the mine roof; 3 obtaining a weighted average coefficient of each roof fall occurrence probability according to the empirical probabilities of each roof fall occurrence, and obtaining a comprehensive prediction value Hk of the roof fall height according to the hidden danger value Hi of the roof fall height of the four roof fall types and the weighted average coefficient of each roof fall occurrence probability, so as to solve the technical problems existing in theprior art that the complex roof falling height of the roadway roof rock structure and the hidden danger classification are difficult to be determined comprehensively.

Description

technical field [0001] The invention relates to the technical field of roadway roof caving, in particular to a method for comprehensively predicting the height of coal seam roadway roof caving and the classification of hidden dangers. Background technique [0002] Energy is the foundation of my country's national economic and social development. At present, coal is still one of the main energy sources in my country. Coal accounts for 76% and 69% of all primary energy production and consumption structures respectively. Therefore, coal has a long-term my country will still be the main energy source in our country. [0003] my country's coal mines are mainly mined underground, and the threat of mine roof disasters is serious. The research on mine roof disasters involves comprehensive interdisciplinary subjects of geology, mechanics, mining, mathematics, computer and other disciplines. Generally, there are no obvious signs when mine roof disasters occur. It is characterized by s...

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/13G06F2119/06G06F30/20
Inventor 冯吉成赵志强石建军高旭马海燕
Owner NORTH CHINA INST OF SCI & TECH
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