摘要
为防范工作面坚硬顶板大面积垮落致灾,进行预裂爆破放顶,通过分析优化工作面坚硬顶板爆破孔数量、长度和角度等参数,合理选择爆破材料,保证了预裂爆破效果,并在7201综放工作面应用成功,为相似条件下煤矿顶板控制提供了借鉴。
In order to prevent the large-scale collapse of the hard roof of the working face and cause disasters,pre-split blasting was carried out.Through analysis and optimization of parameters such as the number,length and angle of blasting holes on the hard roof of the working face,the blasting materials were reasonably selected to ensure the pre-split blasting effect.The successful application in the 7201 fully-mechanized caving face provided a reference for the roof control of coal mines under similar conditions.
作者
丁光彬
DING Guang-bin(China National Coal Group Corp.Co.,Ltd.,Beijing 100120,China)
出处
《煤炭科技》
2022年第2期1-4,共4页
Coal Science & Technology Magazine
关键词
坚硬顶板
预裂爆破
爆破孔垂深
爆破孔角度
爆破参数
hard roof
pre-split blasting
blasting hole vertical depth
blasting hole angle
blasting parameters
