木城涧矿煤层高压注水的数值模拟分析  

NUMERICAL SIMULATION STUDY ON THE HIGH-PRESSURE WATER INJECTION INTO COAL SEAM IN MUCHENGJIAN COAL MINE

作　　者：李宗翔[1] 潘一山[2] 题正义[1] 张智慧[2] 

机构地区：[1]辽宁工程技术大学职业技术学院,辽宁阜新123000 [2]辽宁工程技术大学力学与工程科学系,辽宁阜新123000

出　　处：《岩石力学与工程学报》2005年第11期1895-1899,共5页Chinese Journal of Rock Mechanics and Engineering

摘　　要：为解决京煤公司木城涧矿冲击地压灾害问题,在煤巷掘进时实施预先煤层注水。为研究煤体的渗透特征,在该矿北8槽煤掘进工作面进行了现场单孔等压注水试验,测定了钻孔两侧煤体的湿润水分增值。依据该试验数据用可变容差最优化搜索方法对模型参数进行反演,得到煤体的导水和贮水特征参数,表明该北8槽煤属低湿润饱和煤层,导水性差,适合用高压注水。用数值模拟方法详细描述了在7.0MPa压力下的煤层注水动态过程,通过模拟计算,给出了注水压力–时间–湿润范围三者的动态变化关系。分析了在不同注水压力下的湿润分布的特点,指出合理湿润效果的注水压力在10.0MPa以上。The previous water injection into coal seam was applied when the tunnel was excavated in order to solve the rockburst problem in Muchengjian coal mine. The single drilling hole isobaric water injection was put into effect on site in 6178 excavation working face of this coal mine and the water increment around the drilling hole was measured. Then the model parameter was inversed by using variable-tolerance-band optimization search method and the water transmission and storage characteristic parameters were obtained, which showed that this coal seam has bad water transmissibility and belongs to low-wetted saturation, so the high-pressure water injection is suitable for the coal mine. The dynamic changing processes of water injection under 7.0 MPa are described by visual numerical simulation in detail. The dynamic variable relation among pressure-time-wetted perimeter of water injection was formulated by numerical simulation trial in the end.

关 键 词：岩石力学 冲击地压 煤层掘进注水 渗透特征 参数反演 数值模拟 

分 类 号：TD713.33[矿业工程—矿井通风与安全]