我公司306花岗石产品,走俏国内外市场,产品供不应求,因而荒料开采规模急需扩大,而阻碍生产发展的关键是开采爆破技术相对落后,同先进国家相比还有一定差距,先进国家其成荒率在50％左右,而目前我国仅达到20％左右,资源浪费严重。对此,青岛市科委给我们下达了切割爆破技术的研究课题,以改善我 Our company 306 granite products, popular domestic and foreign markets, products in short supply, so the scale of block mining urgent need to expand, and hinder the development of production is the key to mining blasting technology is relatively backward, compared with advanced countries there is still a certain gap, advanced countries its Into the wild rate of about 50%, but at present our country only reached about 20%, serious waste of resources. In response, Qingdao Science and Technology Commission issued to us the cutting blasting technology research topics to improve me