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这一发现涉及岩体的爆破,更具体地说,是关于球形药包爆破技术在坚硬矿石坑内开采中的应用。按坑采矿山矿体回采的传统方法,一般是用爆破方法将矿石崩下,并将崩碎的矿石从现场运去进一步加工。矿石运走后,形成采空的空间或矿房,然后用砂或废石加水泥进行充填,给岩层以稳定性。在矿房之间还要留下矿石或岩石柱作为结构支撑,当矿房充填后矿柱随之加以回收。这种方法通常叫做“矿房和矿柱”采矿法。
This finding relates to the blasting of rock mass, and more specifically to the application of spherical packet blasting technology in the mining of hard ore pits. According to the traditional method of pit mining ore body mining, the blasting method is generally used to collapse the ore and the crushed ore is transported from the site to the further processing. After the ore is transported away, a mined-out space or a mined-out area is formed and then filled with sand or waste rock plus cement to give stability to the formation. Ore or rock pillars remain behind the mines as structural support, and pillars are subsequently recovered when the mines are filled. This method is commonly referred to as “mines and pillars” mining law.