矿井巷道的交岔点在煤矿施工中通常被称作“牛鼻子”工程,在矿井巷道掘进、支护和维护过程中一直是一个难题。本文以二十采区轨道巷与二水平西翼轨道大巷交岔点施工为例,提炼总结施工优化技术并及时服务指导现场。通过现场试验,在巷道交岔点掘进、支护和工程验收中取得了良好的效果。 The intersection point of mine roadway is usually called “cow nose” project in coal mine construction. It has been a difficult problem in mine tunneling, supporting and maintenance. In this paper, taking the construction of the intersection of the twenty mining area track lane and the two horizontal west wing track and laneways as an example, the article summarizes the construction optimization techniques and provides timely guidance to the site. Through field test, good effect has been achieved in roadway crossing, tunneling and engineering acceptance.