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1975年8月,我院协助某单位建设地下油库,初步试验成功一次进尺超过6米的超深孔光面爆破,创造挤压抛碴掏槽法和全深全断面龟裂、分阶段分层次抛碴爆破方式,一次爆成一个20米深、17.6米~2断面的正方形竖井。
August 1975, our hospital to assist a unit to build underground oil depot, a preliminary test of a successful ultra-deep hole footage of more than 6 meters, to create a squeeze ballast cut method and full-depth full-face cracking, stratified by stages Ballast blasting way, once burst into a 20 m deep, 17.6 m ~ 2 cross-section of the square shaft.