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放炮连线是立井施工中整个放炮工序的重要环节。立井施工往往受涌、淋水条件的限制,目前多采用大并联放炮作业。过去,大并联放炮每圈都需要一根连接线,因此连线繁杂费时、易混乱造成丢炮与拒爆现象,不但影响正常施工循环,而且给生产安全也带来了严重威胁,有时甚至需要重新下放吊泵排水、检查整改线路,造成许多麻烦。为了克服上述问题,我们在实践中研究摸索出了一个大并联单行连接线方法,其实质是利用一根预定长度的放炮连接线(16～18号铝铁丝),按预设方向缠绕在炮眼木橛上(2～3个炮眼插入一个木橛),长度视井筒涌水量而定。当连接线放好后,在槽眼圈
The blasting connection is an important part of the blasting process in shaft construction. Shaft construction is often affected by the Chung, water conditions, the current use of large parallel operation. In the past, the large parallel connection launcher needed a connecting wire every lap. Therefore, the connection was complicated and time-consuming, easily causing confusion and dismounting, which not only affected the normal construction cycle, but also posed a serious threat to production safety and sometimes even required Re-release of hanging pump drainage, check the rectification line, causing a lot of trouble. In order to overcome the above problems, we explored in practice a large single parallel connection cable method, the essence is the use of a predetermined length of the firing cable (16 to 18 aluminum wire), according to the preset direction wrapped around the birch橛 on (2 or 3 holes into a clog), depending on the length of well water gushing. When the cable is put in the eye socket