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1990年底,应河南省周口市造纸厂的委托,我队承担一项用控制爆破拆除旧厂区的地下构筑物和烟囱等任务.其中定向爆破高45m 砖结构烟囱一座,水压控制爆破地下纸浆池18个,利用钻眼爆破混凝土结构池10个、钢筋混凝土结构的球罐体6座,切割、松动爆破大块体12个。总共施爆78次,钻凿爆眼1550个,总长558m,加工起爆药包1767个.
At the end of 1990, upon the entrustment of Zhoukou Paper Mill in Henan Province, our team undertook the task of demolishing underground structures and chimneys from the old plant area by controlled blasting. Among them, a 45m-long brick-structured chimney was blasted by directional blasting, and a hydraulically controlled blasting underground pulp slurry pool 18 A total of 10 concrete structural pools were drilled using drill holes and 6 spherical tanks with reinforced concrete structures were used to cut and loosen 12 large blocks. A total of 78 explosions were performed, 1550 holes were drilled and blasted, and the total length was 558m. 1767 explosives were processed.