煤层注水防尘参数研究

Discussion on Parameter of Dust Control with Water Injection in Seam

以山西大同同忻煤矿为实例,采用理论分析、数值模拟分析的方法,对煤层注水防尘技术研究,结果表明,煤体的基质吸力随着注水压力的增大而减小,煤体的湿润半径随着压力的增大而增大,同时,随着钻孔倾角的增大而先增大后再减小,当8103工作面注水钻孔倾角设置为+4°的时候,达到湿润要求的范围最大。

By theoretical and numerical simulation analysis, the author makes a study on dust control technology with water injection in seam, in which the matrix suction of coal body reduces as the water injection pressure rises; the wetting radius increases as the pressure rises and first increases and then reduces as the drilling inclination angle rises with maximum required wetting at ＋4°of inclination angle.