实践表明，采用单螺旋掏槽方式提高了平巷掘进爆破效率，取得了良好的经济效益。
The construction practice indicated that the blasting efficiency in drift was improved and good economic benefits were obtained by the adoption of single helix cutting mode.
由于炮孔堵塞不牢和初始自由面利用不充分，井下平巷的掘进开挖爆破仍存在投入大、爆破结果欠理想等问题。
Because of the weak borehole sealing and inadequate use of the initial free face, the higher investment and unsatisfactory blasting effect still exist in the mine tunnel excavation blasting.
本文介绍了如何建立基于知识的平巷掘进爆破设计系统，用于辅助平巷掘进爆破设计。
This paper introduces how to set up a design system for drift excavating blasting based-on knowledge, and to use the system for assistant design of drift excavating blasting.
本文介绍了如何建立基于知识的平巷掘进爆破设计系统，用于辅助平巷掘进爆破设计。
This paper introduces how to set up a design system for drift excavating blasting based-on knowledge, and to use the system for assistant design of drift excavating blasting.
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