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露天药室爆破的堵塞工作,一般用人工完成,其体力劳动强度很大,也不利于爆破线路的复查,而对于同一主峒中多药室的爆破,这些缺点则更加明显。为了解决堵塞问题,我矿自1982年以来,在药室松动爆破中,采用无堵塞法取得了成功。几年来我们共设计药室256个,爆破17次,总爆破药量352吨,效果都很好。实践表明,无堵塞爆破在技术上是可行的。下图是无堵塞药室松动爆破的典型形式:
Open-air pharmacy blockage work, generally completed by hand, its great physical strength, is not conducive to the review of blasting lines, and for the same main pill in multi-chamber blasting, these shortcomings are even more apparent. In order to solve the problem of blockage, our mine has achieved success in the loose explosion of pharmacy since 1982 with the non-blocking method. Over the past few years, we designed a total of 256 pharmacies, blasting 17 times, the total blasting dose of 352 tons, the effect is very good. Practice shows that plug-free blasting is technically feasible. The following figure is a typical form of non-clogging chamber loose blasting: