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我矿天井的开凿以爬罐上掘为主。但近几年来,由于国内还没有生产爬罐的工厂,单用爬罐开凿天井已赶不上生产的需要。另外,每条天井60米,在爬罐上掘超过40米后,风压、水压有所降低,生产效率下降30～40%。有时爬罐在40米以上出点毛病,给维修带来很大困难。为了解决这一矛盾,我们采用了爬罐上掘与深孔一次成井相结合的办法,收到了良好的效果。我们采用爬罐只上掘到40米高度,余下20米用地质钻打深孔(图1),采用一次爆破成
Mine mine to cut the canals on the excavation-based. However, in recent years, as the country has not yet produced climatic cans, the use of climbers can not keep up with the production needs. In addition, each patio 60 meters, climbing more than 40 meters in the cans, wind pressure, water pressure has decreased, the production efficiency decreased by 30 to 40%. Sometimes climbing cans in more than 40 meters out of point problems, to repair great difficulties. In order to solve this contradiction, we have adopted a combination of climbing cans and digging deep holes to make a well and received good results. We use the climb can only dig up to 40 meters, the remaining 20 meters with deep drilling geological drilling (Figure 1), using a burst into