本文選題：煤屑　切入點(diǎn)：瓦斯　出處：《河南理工大學(xué)學(xué)報(bào)(自然科學(xué)版)》2017年06期

【摘要】：為探討煤屑瓦斯擴(kuò)散系數(shù)隨時(shí)間變化的響應(yīng)規(guī)律,選取典型煤樣進(jìn)行煤屑瓦斯解吸擴(kuò)散實(shí)驗(yàn),建立了擴(kuò)散系數(shù)隨時(shí)間變化的球形煤屑瓦斯擴(kuò)散微分方程,通過(guò)變量代換方法將得到的微分方程轉(zhuǎn)化為經(jīng)典的擴(kuò)散方程,并運(yùn)用分離變量法得到了煤屑時(shí)變擴(kuò)散系數(shù)的理論解;基于擴(kuò)散規(guī)律理論解對(duì)煤屑瓦斯解吸實(shí)驗(yàn)實(shí)測(cè)解吸數(shù)據(jù)進(jìn)行分析,利用Matlab軟件編制程序進(jìn)行解算,得出瓦斯擴(kuò)散系數(shù)的時(shí)間響應(yīng)規(guī)律。研究結(jié)果表明:煤屑瓦斯等效擴(kuò)散系數(shù)隨時(shí)間響應(yīng)規(guī)律符合冪函數(shù)關(guān)系,采用瓦斯擴(kuò)散系數(shù)時(shí)間響應(yīng)模型比經(jīng)典瓦斯擴(kuò)散模型和煤屑瓦斯擴(kuò)散實(shí)驗(yàn)吻合度更高;煤屑瓦斯擴(kuò)散系數(shù)時(shí)間響應(yīng)模型描述煤層的瓦斯運(yùn)移過(guò)程更合理、更準(zhǔn)確。
[Abstract]:For the study of the response characteristics of coal gas diffusion coefficient changes with time, the typical coal coal gas desorption diffusion experiment, spherical wall of gas diffusion differential equations with time variable diffusion coefficient is established, by using variable substitution method of differential equation can be transformed into the classical diffusion equation, and using the method of separation of variables has been slack when variable diffusion coefficient theory solution; diffusion theory of coal gas desorption experimental solution desorption data were analyzed based on the solution of using Matlab software to program the response rule of the gas diffusion coefficient of time. The results show that the equivalent wall of gas diffusion coefficient with time response of the power function relationship, the gas diffusion coefficient of time response model than the classical gas diffusion model and coal gas diffusion experiment agree with the higher degree of coal gas diffusion coefficients; The inter response model is more reasonable and more accurate to describe the process of gas migration in coal seams.

【作者單位】： 河南省瓦斯地質(zhì)與瓦斯治理重點(diǎn)實(shí)驗(yàn)室(省部共建國(guó)家重點(diǎn)實(shí)驗(yàn)室培育基地);河南理工大學(xué)安全科學(xué)與工程學(xué)院;煤炭安全生產(chǎn)河南省協(xié)同創(chuàng)新中心;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(51404100,51574112,51304072) 教育部創(chuàng)新團(tuán)隊(duì)計(jì)劃項(xiàng)目(IRT_16R22) 河南省科技創(chuàng)新杰出青年基金資助項(xiàng)目(164100510013)
【分類號(hào)】：TD712
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本文編號(hào)：1667283