CAJ | 학술논문

为合理确定本煤层瓦斯抽采钻孔的布孔间距，通过煤层瓦斯渗流场控制方程、煤体孔隙率和渗透率耦合方程及煤层变形场控制方程，建立了钻孔抽采条件下瓦斯渗流固气耦合数学模型；采用数值模拟计算方法，得出顺层瓦斯抽采钻孔的抽采半径，并推导出瓦斯抽采钻孔布孔间距与单钻孔抽采半径的关系式。以黄岩汇矿15107工作面为应用实例，通过在该工作面进行单钻孔和多钻孔瓦斯抽采试验，求算并验证了抽采半径及布孔间距与抽采半径关系式的正确性，为现场瓦斯抽采提供科学依据。
위합리학정본매층와사추채찬공적포공간거，통과매층와사삼류장공제방정、매체공극솔화삼투솔우합방정급매층변형장공제방정，건립료찬공추채조건하와사삼류고기우합수학모형；채용수치모의계산방법，득출순층와사추채찬공적추채반경，병추도출와사추채찬공포공간거여단찬공추채반경적관계식。이황암회광15107공작면위응용실례，통과재해공작면진행단찬공화다찬공와사추채시험，구산병험증료추채반경급포공간거여추채반경관계식적정학성，위현장와사추채제공과학의거。
To determine the reasonable distance of gas drainage boreholes in coal seam being mined, based on the control equations of seepage and deformation fields, and the coupling equations of porosity and permeability, the solid and gas coupling mathematical model of gas seepage in drilling extraction was established. The drainage radius of gas extraction borehole in current coal seam was calculated by numerical simulation, and the relation between the borehole distance and extraction radius of sin-gle-borehole was deduced. Taking coalface 15107 of Huangyanhui coal mine for example, by the gas drainage experiments of single drilling and multiple drillings in this face, the correctness of the drainage radius, and the relation between borehole distance and extraction radius were calculated and verified. The research results provide a scientific basis for gas extraction.