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岩石的爆破破碎程度取决于一组相互关联的因素,它们与岩石、炸药及其起爆顺序、炮孔及其布置以及巷道的类型相关。一种特定的破碎程度大多是借助于反复试验爆破方法而取得,因为爆破工程师一般可资利用的资料仅适用于普通教科书所述的一些岩石类型,然而,爆破技术远非静止不变的;新近的研究已集中于应用炸药燃烧速率数据的计算机模型,使炸药与每种类型的岩石和炮孔直径相匹配。未来的研究开发有可能定制炸药,使之在装入炮孔时与岩石特性的三维图相吻合(由凿岩作业得知岩石特性并将其储存在计算机的存储器中)。本文是珀森教授在最近举行的桑德威克凿岩工具公司(Sandvik Rock Tool)凿岩日会议上所作报告的修订稿,本文阐述破碎过程,提出一个用于测定岩石应力和破碎度的简单数学模型,讨论和分析了不同炸药的效率。
The extent to which a rock is broken depends on a set of inter-related factors that relate to the rock, explosives and their initiation sequence, the hole and its placement, and the type of roadway. A particular degree of fragmentation is mostly achieved by means of a trial and error blasting method, as generally available information for blasting engineers applies only to some of the rock types described in common texts, however, blasting techniques are far from static; Research has focused on computer models that use explosives burn rate data to match the explosives to each type of rock and borehole diameter. Future research and development It is possible to customize the explosives to match the three-dimensional map of the rock characteristics when loading the blasthole (the rock characteristics are known from the rock drilling operation and stored in the computer’s memory). This paper is a revised version of a report Prof. Persson made at the recent Sandvik Rock Tool Drilling Rim meeting. This article describes the crushing process and proposes a simple, simple method for measuring rock stress and crushing Mathematical model to discuss and analyze the efficiency of different explosives.