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首页> 外文期刊>Arabian Journal for Science and Engineering >INFLUENCE OF JOINT DIRECTION AND POSITION OF EXPLOSIVE CHARGE ON FRAGMENTATION
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INFLUENCE OF JOINT DIRECTION AND POSITION OF EXPLOSIVE CHARGE ON FRAGMENTATION

机译：接缝的方向和炸药的位置对碎片的影响

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摘要

Although researchers have realized varying degrees of success in small-scale physical in situ testing, most will agree that the greatest uncertainty stems from the uncontrollable field variables. Given the diverse nature of field conditions encountered, there exists no reliable and proven method of predicting fragmentation. Due to the lack of adequate field controls, it is unlikely that a universal physical model will ever be developed for all blasting. This paper presents the results of a test conducted at the Hadjar Essoud quarry to investigate the problems associated with the discontinuities in the rock, which are among the factors causing the reduction of the resistance of the rocks to the explosive. Nevertheless, the distance between the joints, their dip and strike, and the position of the detonator play a significant role in the final fragmentation of the rock. In this work, we studied the role of the above-mentioned factors on models of limestone rock of 150 x 375 x450 mm. Accurate measurement of blast, fragmentation is important in mining and quarrying operations, in monitoring blasts, and optimizing their design. We shall use the Kuznetsov-Rammler method to measure fragmentation. It shows great potential as a practical aid to predict and control the quality of the fragmented material in the Hadjar Essoud quarry.
机译：尽管研究人员已经在小规模的物理原位测试中获得了不同程度的成功，但大多数人会同意最大的不确定性来自不可控制的现场变量。鉴于所遇到的现场条件的多样性，目前尚没有可靠且经过验证的预测碎片的方法。由于缺乏适当的现场控制，不可能为所有爆破开发通用的物理模型。本文介绍了在Hadjar Essoud采石场进行的测试结果，以调查与岩石不连续性相关的问题，这些问题是导致岩石对炸药的抵抗力降低的因素之一。然而，节理之间的距离，其倾角和走向以及雷管的位置在岩石的最终破碎中起着重要作用。在这项工作中，我们研究了上述因素在150 x 375 x450 mm石灰岩模型上的作用。爆炸，碎片的准确测量对于采矿和采石场，监测爆炸以及优化其设计非常重要。我们将使用Kuznetsov-Rammler方法来测量碎片。它具有巨大的潜力，可作为预测和控制Hadjar Essoud采石场中破碎物料质量的实用工具。

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