信阳师范学院学报（自然科学版）2018，Vol.31Issue(1)：135-139,5.DOI:10.3969/j.issn.1003-0972.2018.01.027
基于煤岩割理正交各向异性性质的低渗透煤层压力数值模拟研究
Numerical Simulation of Pressure Distribution of Coal Seams Based on the Orthotropic Physical Properties of Coal Cleats
摘要
Abstract
The coupling model of three-phase of gas-water-solid for coal seams was established on the basis of the orthotropic physical properties of coal cleats and different seepage characteristics in the orientation of the face and butt cleats.The comparison between the calculated results based on the coupling model and the uncoupling model indicated their good agreement, which verified the accuracy and rationality of the model. By using the coupling model, the distri-bution of pressure and desorption radius were obtained and the effect of physical parameters of coal cleats on pressure was analyzed. The results showed that the desorption area of the non-coupling model was larger than that of the cou-pling model. The desorption radius along the face cleats direction increases with permeability orthotropic coefficient in-creasing, whereas it decreases along the butt cleats direction. The pressure along the face cleats direction increases first and then decreases with permeability orthotropic coefficient and cleat width increasing, and increases with permeability orthotropic coefficient, cleat density and cleat width increasing.关键词
煤岩割理/正交各向异性/耦合模型/数值模拟Key words
coal cleats/orthotropic/coupling model/numerical simulation分类
矿业与冶金引用本文复制引用
王保辉,闫相祯..基于煤岩割理正交各向异性性质的低渗透煤层压力数值模拟研究[J].信阳师范学院学报（自然科学版）,2018,31(1):135-139,5.基金项目
国家科技重大专项大型油气田及煤层气开发资助项目(2011ZX05036-001) （2011ZX05036-001）
