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前言本杂志曾介绍过用炸药爆破开采石料的方法[见资料1、2]。近几年来导爆索发展很快,采石工业上也可以用它作爆破工具[见资料3～5],在维尔茨堡/韦特海姆地区就采用导爆索爆破开采大块彩色砂岩石料。开采时,应根据石料尺寸现场调整钻孔位置。爆破前,先将剥离层和无用的岩石清除掉,将硝铵胶质代那迈特(Ammon-Gelit 3)装进小直径的爆破孔内,同时应注意爆破不能损坏最上层作石料的岩石条。适于做石料的彩色砂岩是不同厚度的水平走向岩
Preface This magazine has described methods of blasting quarrying with explosives [see Information 1, 2]. In recent years, the detonating cord has developed rapidly, and the quarrying industry can also use it as a blasting tool [see Materials 3-5], in the area of Würzburg / Wertheim on the use of detonating cable blasting large colored sandstone Stone. Mining, should be based on the size of the stone site to adjust the drilling position. Prior to blasting, peel off the peeled off layer and useless rocks, put the ammoniacal gel Ammon-Gelit 3 into a small diameter blasthole, and pay attention that the blasting should not damage the uppermost rock as a rock Article. Colored sandstone suitable for stone is a horizontal strike rock of different thickness