我矿天井掘进,以前都是采用土法,虽然达到了月掘进63米的速度,但仍不能适应采矿生产的要求,而且通风困难,坑木消耗量也大。为了提高掘进效率,解决上述弊病,我们与老工人一道在原有基础上做了一些改进,试用双层工作台掘进天井,取得了较好的效果。 +10米中段的Ⅰ、Ⅲ号天井就是采用此法掘进的。天井断面2×2米、倾角60°、斜长29米。双工作台由上下两层组成,两层间距离约为一个循环的进尺。上层为工作台,距工作面2米左右;下层为安全台,防 I used mine tunneling, were used before the soil method, although reached the speed of 63 meters per month, but still can not meet the requirements of mining production, but also ventilation difficulties, pit consumption is also large. In order to improve the efficiency of driving and solve the above defects, we made some improvements on the original basis with the old workers. We tried on the double-deck workbench to dig into the patio and achieved good results. The middle of the +10 meters Ⅰ, Ⅲ is the use of this method of tunneling. Pavement section 2 × 2 meters, inclination 60 °, inclined length 29 meters. Double table consists of two layers, the distance between the two layers is about a cycle of footage. The upper is the workbench, about 2 meters away from the work surface; the lower is the safety bench and the anti-guard