摘要
根据常峪铁矿的围岩特性及爆破要求,在中硬围岩平巷中采用导硐法光面爆破技术进行爆破掘进,掘进中根据围岩性质改进掏槽孔的设置参数,不仅提高了巷道壁平整度和半孔率,而且增加了每一次爆破掘进的进尺,围岩较完整稳固,提高了经济效益和安全效益。
Based on the surrounding rock characteristics and blasting requirements of Changyu Iron Ore, smooth blasting technology of heading method is used for level in medium-hard surrounding rock for blasting and tunneling. In tunneling, according to surrounding rock properties, the set parameters of cutting hole is improved. It does not only improve the flatness of the wall and the semi-hole rate, but also increases the footage during each blasting and tunneling. The surrounding rock is relatively complete and stable. It improves the economic benefits and safety benefits.
作者
杨闯
李成斌
王宝文
罗业民
YANG Chuang;LI Chengbin;WANG Baowen;LUO Yemin(HBIS Mining Luanxian Changyu Iron Ore Co., Ltd. Luanzhou 063700, China)
出处
《矿业工程》
CAS
2019年第5期58-61,共4页
Mining Engineering
关键词
光面爆破
导硐
掏槽孔
进尺
smooth blasting
heading
cutting hole
footage