黑龙江科技大学学报2023，Vol.33Issue(6)：817-823,7.DOI:10.3969/j.issn.2095-7262.2023.06.007
基于饱和度指标的含瓦斯水合物煤体强度预测模型
Strength prediction model of gas hydrate-coal mixture based on saturation index
摘要
Abstract
This paper is aimed at studying the applicability of the strength prediction model of gas hy-drate-bearing coal.The targeted study consists of obtaining a strength prediction model through theoretical deduction and data fitting by means of the conventional calculation format of triaxial strength criterion and the selection of empirical parameters;developing the strength prediction model of the gas hydrate-bearing coal considering saturation by introducing related mechanical parameters of the saturation.The results show that the index,Rocker and Drucker-Prager strength prediction models appear the regression coeffi-cients of the peak strength predictive value by 0.897,0.985 and 0.994,and the average relative errors up to 6.48%,2.48%and 1.92%,suggesting that Drucker-Prager and Rocker strength prediction mod-els are more suitable for gas hydrate-coal mixture;and the average relative error of the peak strength pre-dictive value of Drucker-Prager strength prediction model considering saturation is 1.69%,indicating that the Drucker-Prager strength prediction model considering saturation can predict the strength charac-teristics behind gas hydrate-coal mixture more accurately.关键词
含瓦斯水合物煤体/三轴压缩/饱和度/峰值强度/强度预测模型Key words
gas hydrate-coal mixture/triaxial compression/saturation/peak strength/intensity pre-diction model分类
矿业与冶金引用本文复制引用
高霞,杨书朋,刘飞,张保勇,吴强..基于饱和度指标的含瓦斯水合物煤体强度预测模型[J].黑龙江科技大学学报,2023,33(6):817-823,7.基金项目
国家自然科学基金联合基金项目(U21A20111) （U21A20111）
国家自然科学基金项目(51974112) （51974112）
