Method for predicting water-richness level of coal seam roof sandstone
A coal seam roof and prediction method technology, applied in the field of grade prediction, can solve the problems of inaccurate prediction and low prediction efficiency, and achieve the effect of high promotion value
Inactive Publication Date: 2018-04-20
SHANDONG UNIV OF SCI & TECH
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[0007] The purpose of the present invention is to provide a method for predicting the water-rich grade of coal seam roof sandstone, which solves the current technical problems of inaccurate prediction and low prediction efficiency of water-rich grade of coal seam roof sandstone
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[0079] The method for predicting the water-rich level of coal roof sandstone in this embodiment has been analyzed and verified in more than 10 coal mines, including Caozhuang Coal Mine, Xinyi Coal Mine, and Zhaozhuang Mine Field, and its prediction accuracy is very high. Examples of 38 groups of samples. Among them, 1 to 27 groups of samples are taken as the samples to be tested on-site, and the three water enrichment grades of 1 to 27 samples and the six influencing factors that affect the water enrichment grade are analyzed, and the sample database is established with the 1 to 27 sampling data; Taking samples from 28 to 38 groups as samples to be tested, the three water-rich grades of each sample from 28-38 samples and the six influencing factors that affect water-rich grades are obtained by analysis. It should be noted that in the samples from 28 to 38 " The "three water-rich grades" do not need to be analyzed in engineering practice, and can only be analyzed after coal mine...
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The invention provides a method for predicting a water-richness level of the coal seam roof sandstone. The method includes the steps of A, performing on-site sampling at N sampling sites of the underground coal seam roof sandstone, analyzing the coal seam roof sandstone at each sampling site to obtain three water-richness levels thereof and six influencing factors affecting the water-richness level, and establishing a sample database; B, after preprocessing data in the sample database, establishing a coal seam roof sandstone water-richness level prediction model based on a Bayesian classifier;C, training and testing the coal seam roof sandstone water-richness level prediction model based on the Bayesian classifier; and D, performing on-site sampling on a sampling site under test of the underground coal seam roof sandstone, and realizing the coal seam roof sandstone water-richness level prediction of the sampling site under test with a Bayesian formula by the coal seam roof sandstone water-richness level prediction model based on the Bayesian classifier. The method of the invention has the beneficial effect of accurately and efficiently predicting the water-richness level of the coal seam roof sandstone at the sampling site.
Description
Technical field [0001] The invention relates to the technical field of underground coal mining safety production, in particular to a method for predicting the water-rich grade of sandstone on the roof of a coal seam. Background technique [0002] Coal roof water damage is one of mine water damage, which seriously threatens the safety of coal mining. The gushing of water from the roof of the mine not only deteriorates the production environment of the working face, but also brings unsafe factors to mine production. Because the water richness of the sandstone on the roof of the mine cannot be checked, the prediction of the amount of roof water gushing is improper, or the safety factor is excessively increased, which greatly increases the cost of the prevention and control project; or the safety factor is too small, and the mine (mining area) is waterproof and drainage capacity Insufficiency, causing major accidents in flooded wells and mining areas and even casualties. [0003] In ...
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IPC IPC(8): G01V1/30G06K9/62
CPCG01V1/306G01V2210/624G06F18/24155
Inventor 石永奎张良良徐明伟张铎李俊勇
Owner SHANDONG UNIV OF SCI & TECH