摘要
在时间上；空间上，技术上合理安排掘沟的穿爆，出入沟、排水、初期扩邦，以及新旧出入沟的接替，理顺各项工作之间的关系，可达到掘沟的优质、高效。
Good quality and high efficiency can ha reached with proper arrangement of hole drilling, blast, in/out ditches, drainage, initial slope enlargement, replacement of old and new in /on[ ditches and relation between various work.
出处
《包钢科技》
2000年第2期1-3,53,共4页
Science & Technology of Baotou Steel
关键词
掘沟
出入沟
开段沟
排水
扩邦
磁铁矿
ditch digging
in/out ditches
opening segment ditch
drainage
slope enlargement
