岩巷下山施工技术探讨

开滦钱家营矿业公司在矿井衔接紧张的情况下，优先安排下山施工-600水平以下八采区，十采区的大部分开拓工程，在施工初期，由于受施工技术，管理水平限制工程进度慢、效率低不能满足生产要求，通过采用光面爆破新技术、科学选择和利用施工设备、合理调整工序充分利用工时，提高了施工效率，使施工进度、工程质量得到明显提高，为矿井的总体衔接提供了基础保障。

Discuss the constructing technique of down-dip rock heading

The major parts of down - dip development work at No. 8 and No. 10 working section below the level of 600 m deep were firstly put into construction under the tense situation of production and drivage in Qianjiaying Mining Company. At the begining,the progress of footage was too slow to meet the requirement of production owing to restriction of both constructing technique and management. The constructing efficiency of progress and quality had been greatly improved by adopting smooth blasting, by scientificly selecting and using equipment, and by reasonably adjusting the activity order or fully using man- hour. The above - mentioned methods ensure the succesful transition of mining production for the whole mine.