急斜煤层预爆破顶煤裂隙特征钻孔光学测定

摘要

煤岩裂隙钻孔光学窥视测定是基于数字图像相关方法(Digital Image Correlation,DIC)光学测量手段,基于室内光学测试技术,改进煤岩损伤与裂隙现场声光电综合测试装置,以碱沟煤矿+564 m水平B3+16急倾斜煤层工作面为例,经过对超前预爆破顶煤裂隙特征测定,定量分析了顶煤裂隙的数量、大小和倾角,确定裂隙方位,为安全开采提供保障.%The coal petrography crack drilling optics measurement is optics measure method based on Digital Image Correlation ( DIC ), and existing room optics testing technology. The testing equipment for coal defect and crack field sound-light-electric is improved. Taking + 564 B3+6steep coal working face in Jiangou colliery for example,by the pre-blasting top coal crack feature measurement. The number, size and dip angle of the crack is quantitatively analyzed to ensure safe mining.