煤矿瓦斯涌出量精准预测及其控制因素分析——以王庄煤矿为例

Accurate Prediction of Shanxi Coal Mine Gas Emission and Analysis of Its Control Factors:A Case of Wangzhuang Coal Mine

随着煤矿开采深度的增加,煤层瓦斯含量不断增高,煤矿安全开采形势日趋严峻。为实现煤炭安全高效生产,精准预测瓦斯涌出量十分重要。采用数据统计、理论分析等手段,从研究区瓦斯地质条件出发,综合分析控制瓦斯涌出量的各种地质因素,通过数据标准化、显著性分析和交叉验证,剔除相关性较小的因素,建立瓦斯涌出量预测模型,对未采区瓦斯涌出量进行了预测。结果表明:控制研究区煤层瓦斯涌出量的主要因素为煤层埋藏深度、冲积层厚度等。根据预测模型计算出研究区未采区内瓦斯涌出量,最小为33.94m3/min,最大达到59.18m3/min。研究成果对采用适用性技术进行瓦斯精准抽采、降低瓦斯灾害具有重要意义。

With the increase of coal seam mining depth,the gas content of coal seam is increasing,and the impact on coal mine safety mining is also increasing.In order to realize the safe and efficient production of coal in the study area,it is very important to accurately predict the gas emission.Data statistics,theoretical analysis and other means are used to comprehensively analyze various geological factors that control gas emission from the gas geological conditions in the study area.Through data standardization,significance analysis and cross-validation,the factors with less correlation are eliminated,and the gas emission prediction model is established to predict the gas emission in the unmined area.The results show that the main factors controlling the gas emission in the study area are the burial depth of the coal seam and the thickness of alluvial layer.According to the prediction model,gas emission in the unexploited area of the study area is calculated,with a minimum of 33.94 m3/min,and a maximum of 59.18 m3/min.This study is of great significance to the use of applicable technology for accurate gas extraction and reduction of gas disasters.