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在毛主席的无产阶级革命路线指引下,我所科技人员为解决我省某水电工程水下岩石开挖问题,在有关单位革委会的领导下,组成“三结合”试验小组进行深水爆破防护试验,经过半年多的反复试验,成功地运用了“气泡帷幕”防护新技术。 “气泡帷幕”法,是在水下建筑物与爆破点之间敷设一根或数根钢管(或塑料管),管的两侧钻有两排孔眼,工作时在管的一端或两端通入空气,大量的空气通过小孔逸出,就形成了一定厚度的水和气泡混合在一起的“气泡帷幕”。当水下爆破产生的冲击波到达“气泡帷幕”时,冲击波大部份的能量被气泡吸收而衰减,从而减少对水下建筑物的影响。采用此法,设备简单 容易操作 还可缩短工期
Guided by Chairman Mao’s proletarian revolutionary line, our scientific and technical personnel, under the leadership of the Revolutionary Committee of the relevant units, formed a “three-in-one” experimental group to carry out deepwater blasting protection in order to solve the problem of underwater rock excavation in a hydropower project in our province. Test, after more than six months of trial and error, the successful use of the “bubble curtain” protection of new technologies. The “bubble curtain” method is to lay one or several steel pipes (or plastic pipes) between the underwater building and the blasting point. Two rows of holes are drilled on both sides of the pipe. One or both ends of the pipe work Into the air, a lot of air escaping through the hole, the formation of a certain thickness of water and air bubbles mixed together, “bubble curtain.” When the shock wave generated by underwater blasting reaches the “bubble curtain,” most of the energy of the shock wave is absorbed and attenuated by bubbles, thereby reducing the impact on underwater structures. Using this method, the device is simple and easy to operate but also shorten the construction period