Method for forming dynamic salient danger prognostic map of working face

Abstract

The invention discloses a method for forming a dynamic salient danger prognostic map of a working face. The method comprises the following steps: first, collecting gas bearing data and nuclear analysis data of a stope, so as to form a risk evaluation index for judging salient danger of the stope; then determining the danger grades in the range of working face domain; finally, comprehensively preparing the salient danger prognostic map based on different grades of the grid, and implementing real-time updating according to the variation of convex forecasting evaluation indexes. The method divides the dynamic evaluation indexes of the salient danger of the working face into the categories of methane gas, geology, stress and outburst prevention measures on the basis of studying the methane gas occurrence rules of the mine working face, simultaneously masters and intelligently analyzes the variable rules of evaluation indexes, comprehensively forms the dangerous salient dynamic prognostic map for working face grade and implements the real-time updating according to the variation of convex forecasting evaluation indexes so as to determinate the grade of salient areas in a more direct, accurate and real-time manner, reduces the blindness of outburst prevention working and the cost of outburst prevention engineering, and guarantees the safety production of the mine.

Description

technical field [0001] The invention relates to a method for predicting coal and gas outburst, in particular to a method for on-site prediction of coal and gas outburst. Background technique [0002] Coal and gas outburst is an extremely complicated dynamic phenomenon. Preventing the occurrence of coal and gas outburst is an urgent technical problem that needs to be solved. Most of them are static evaluation results, and it is impossible to conduct real-time and dynamic risk evaluation and analysis of the entire process from design, excavation to mining within the working face section, and it is difficult to provide decision-making assistance for staff in a timely manner; there is a lack of effective management of basic information and data. Methods and means, the staff cannot obtain the required information conveniently and quickly; the existing data such as gas, geology, and outburst prevention measures are mostly expressed in text form, lacking effective expression and an...

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Problems solved by technology

In our country, it mainly focuses on the "two four-in-one" comprehensive prevention and control outstanding technology of "regional four-in-one as the main and local four-in-one as the supplement" and has achieved good results, but there are still difficulties in the realization process

[0004] At present, domestic and foreign mainly focus on regional prediction in the sense of mines and mining areas, and most of them are static evaluation results, which cannot perform real-time and dynamic risk evaluation and analysis on the entire process from design, tunneling to mining within the working face section. , it is difficult to provide decision-making assistance for staff in a timely manner; there is a lack of methods and means for effectively managing basic information data, and staff cannot obtain the required information conveniently and quickly; existing data such as gas, geology, and outburst prevention measures are mostly in text Formal expression, lack of effective expression and analysis of spatial data, unable to reflect relevant information vividly, intuitively and truly

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