采矿与安全工程学报Issue(1)：156-162,7.DOI:10.13545/j.cnki.jmse.2015.01.025
顺层钻孔瓦斯抽采半径及布孔间距研究
Gas drainage radius and borehole distance along seam
摘要
Abstract
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.关键词
钻孔/布孔间距/抽采半径/瓦斯压力/数值模拟Key words
borehole/drilling distance/extraction radius/gas pressure/numerical simulation分类
矿业与冶金引用本文复制引用
鲁义,申宏敏,秦波涛,张雷林,马洪芬,毛桃良..顺层钻孔瓦斯抽采半径及布孔间距研究[J].采矿与安全工程学报,2015,(1):156-162,7.基金项目
国家自然科学基金项目(51476184)；江苏省杰出青年基金项目(BK20140005)；江苏高校优势学科建设工程项目 （51476184）
